WO2022110249A1

WO2022110249A1 - Stapler

Info

Publication number: WO2022110249A1
Application number: PCT/CN2020/132993
Authority: WO
Inventors: 杜运峰
Original assignee: 苏州英途康医疗科技有限公司
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2022-06-02

Abstract

A stapler (100), comprising an end effector (1), a closing mechanism (2), a staple pushing assembly and a locking mechanism (5), wherein the end effector (1) comprises a staple bin assembly (11) and a staple anvil (12), and staples are arranged in the staple bin assembly (11); in an initial state, the end effector (1) is in an open state; in a closing phase, the closing mechanism (2) is configured to drive the staple bin assembly (11) and the staple anvil (12) to be folded, so that the end effector (1) is closed to clamp target tissue; in a staple pushing phase after the closing phase, the staple pushing assembly is configured to push the staples out of the staple bin assembly (11), so as to suture the target tissue; and the locking mechanism (5) is configured to limit the closing mechanism (2) to a first position in the staple pushing phase, so that the closing mechanism (2) keeps the end effector (1) in a closed state, and is configured to, in the initial state, limit the closing mechanism (2) to a second position, so as to keep the end effector (1) in the open state.

Description

stapler

technical field

At least one embodiment of the present disclosure relates to a stapler.

Background technique

In surgical treatment, various staplers are widely used, such as skin staplers, gastrointestinal (esophagus, gastrointestinal, etc.) circular staplers, rectal staplers, circular hemorrhoid staplers, circumcision staplers, Vascular stapler, hernia stapler, lung cutting stapler, etc. These staplers are medically used to replace the traditional manual suture equipment. Due to the development of modern technology and the improvement of manufacturing technology, various staplers currently used in clinical practice have the advantages of fast and accurate suture, easy operation, less blood loss and less It has the advantages of side effects and surgical complications, and sometimes enables the resection of tumors that were unresectable in the past, so it is very popular and respected by clinical surgeons at home and abroad.

Typically, staplers are sutured using staples made of materials such as medical stainless steel, titanium, titanium alloys, biodegradable magnesium alloys, and the like.

SUMMARY OF THE INVENTION

At least one embodiment of the present disclosure provides a stapler that includes an end effector, a closure mechanism, a staple push assembly, and a locking mechanism. The end effector includes a staple cartridge assembly and a staple anvil, the staple cartridge assembly is provided with staples; in an initial state, the end effector is in an open state; in a closing phase, the closing mechanism is configured to drive the staples A cartridge assembly and the staple anvil are engaged to close the end effector to clamp target tissue; in a staple push phase following the closure phase, the staple push assembly is configured to remove the staples from the staples is pushed out of the cartridge assembly to staple the target tissue; a locking mechanism is configured to restrain the closure mechanism in a first position during the staple push phase to maintain the closure mechanism in a closed state of the end effector, and is configured to define the closure mechanism in a second position in the initial state to maintain the end effector in the open state.

For example, in the stapler provided by an embodiment of the present disclosure, the locking mechanism includes a first limiting structure and a second limiting structure. The first limiting structure is configured to limit the closing mechanism to the first position in the nail pushing stage; the second limiting structure is configured to limit the closing mechanism to the first position in the initial state. Second position.

For example, the stapler provided by an embodiment of the present disclosure further includes a first elastic member, the first elastic member is connected with the closing mechanism; in the closing stage, the closing mechanism moves toward the end effector to make the closing mechanism move toward the end effector. The end effector is closed and the first elastic member is elastically deformed; in the nail pushing stage, the elastically deformed first elastic member acts on the closing mechanism to prevent the closing mechanism under the action of its elastic restoring force. a first resistance for the closing mechanism to move toward the end effector, the first limiting structure is configured to apply a second resistance to the closing mechanism opposite to the direction of the first resistance, the first resistance and the The second resistance is balanced to limit the closing mechanism to the first position; in the initial stage, when the closing mechanism is subjected to a driving force that drives it away from the second position, the second limiting structure is configured to apply a third resistance force to the closure mechanism to balance the drive force to confine the closure mechanism to the second position.

For example, in the stapler provided by an embodiment of the present disclosure, the first limiting structure includes a first limiting groove and a first locking member. The first limiting groove has a first side wall, which is located on the closing mechanism and is configured to move with the movement of the closing mechanism; in the nail pushing stage, at least a portion of the first end of the first locking member is at least The part is limited in the first limiting groove and is in contact with the first side wall to apply a fourth resistance force to the first side wall, so as to apply the closing mechanism through the first limiting groove. The second resistance, the fourth resistance and the second resistance are equal in magnitude and direction; the second limiting structure includes a second limiting groove and a second locking member; the second limiting groove has a second side a wall located on the closure mechanism and configured to move with movement of the closure mechanism; in the initial stage, at least a portion of the first end of the second locking member is limited to the second limiting groove and is configured to be in contact with the second side wall to apply a fifth resistance force to the second side wall, thereby applying the third resistance force to the closing mechanism through the second limit groove, and the first resistance force is applied to the closing mechanism. The fifth resistance is equal in magnitude to the third resistance and is in the same direction as the first resistance.

For example, in the stapler provided by an embodiment of the present disclosure, the first locking member and the second locking member are the same common locking member, and in the closing stage, the first limiting groove and the second locking member are The limit slot moves relative to the common locking member so that the common locking member is configured to move from the second limit slot to the first limit slot; when the first end of the common locking member is at least When the first end of the common locking member is at least partially confined in the first limiting groove, the common locking member and the first limiting groove constitute the first locking member; When located in the second limiting groove, the common locking member and the second limiting groove constitute the second locking member.

For example, in the stapler provided by an embodiment of the present disclosure, the moving direction of the closing structure, the first limiting groove and the second limiting groove is an axial direction, and along the axial direction, the first limiting groove The limit slot is located on a side of the second limit slot away from the end effector.

For example, in the stapler provided by an embodiment of the present disclosure, the locking mechanism further includes a channel groove, and the channel groove is located between the first limit groove and the second limit groove and is connected to the first limit groove The slot communicates with the second limiting slot, wherein, in the closing stage, the common locking member is configured to move from the second limiting slot to the first limiting slot via the passage slot.

For example, in the stapler provided by an embodiment of the present disclosure, the common locking member further includes a second end portion opposite to the first end portion, and a second end portion connecting the first end portion and the second end portion a neck; the passage slot is configured to allow passage of the neck but not the first end so that in the initial stage, the first end cannot pass through the passage slot and is at least partially restricted is located in the second limiting groove, and in the nail pushing stage, the first end portion cannot pass through the channel groove and is at least partially limited in the first limiting groove.

For example, in the stapler provided by an embodiment of the present disclosure, the direction from the first end to the second end is a longitudinal direction, and the longitudinal direction is perpendicular to the axial direction, perpendicular to the axial direction and the The longitudinal direction is the transverse direction; the width of the channel groove in the transverse direction is smaller than the width of the first limiting groove in the transverse direction and smaller than the width of the second limiting groove in the transverse direction The width of the first end portion in the transverse direction is larger than the width of the neck portion in the transverse direction and larger than the width of the channel groove in the transverse direction.

For example, in the stapler provided by an embodiment of the present disclosure, the locking mechanism further includes a locking driving structure; in the closing stage, the locking driving structure is configured to drive the common locking member to move away from the common locking member along the longitudinal direction. The direction of the second end portion is moved so that the first end portion is moved out of the second limit groove. With the movement of the first limit groove and the second limit groove, the neck The part is configured to move from the second limit slot to the first limit slot through the passage slot; after the end closure is closed, the locking drive structure is configured to drive the common locking member along the The longitudinal direction moves toward the direction close to the second end portion, so that at least part of the first end portion moves into the first limiting groove and is limited in the first limiting groove, and the first At least a portion of one end is in contact with the first side wall to apply the fourth resistance force to the first side wall.

For example, in the stapler provided by an embodiment of the present disclosure, at least a part of the first end part is in contact with a first part of the first side wall that is close to the channel groove to give the first part of the first side wall Applying the fourth resistance force, the first portion of the first sidewall faces away from the end effector.

For example, in the stapler provided by an embodiment of the present disclosure, the closing mechanism is a hollow sleeve, and the first limiting groove, the second limiting groove and the channel groove penetrate through the barrel of the sleeve wall.

For example, the stapler provided by an embodiment of the present disclosure includes a fixing bracket, the sleeve is sleeved on the outer side of the fixing bracket, and the first limiting groove, the second limiting groove and the passage groove expose the the outer surface of the fixing bracket; the fixing bracket includes a through hole penetrating the outer surface, when at least part of the first end of the common locking mechanism is limited to the first limiting groove or limited to the When placed in the second limiting groove, at least part of the neck and the second end are located in the through hole.

For example, in the stapler provided by an embodiment of the present disclosure, the first end includes a lower surface facing the fixing bracket, and when at least part of the first end of the common locking mechanism is limited to the first end The outer surface of the fixing bracket is in direct contact with the lower surface of the first end portion to support the first end portion in the limiting groove or when the second limiting groove is limited.

For example, in the stapler provided by an embodiment of the present disclosure, the common locking member and the through hole constitute a latch structure.

For example, in the stapler provided by an embodiment of the present disclosure, the length of at least part of the first end in the axial direction is smaller than the length of the first limiting groove in the axial direction.

For example, in the stapler provided by an embodiment of the present disclosure, the first side wall is a first arc shape, and at least a part of the side surface of the first end portion that is in contact with the first side wall is a second arc shape , the curvature of the first arc and the second arc are the same.

For example, in the stapler provided by an embodiment of the present disclosure, the planar shape of the channel groove is a straight bar.

For example, in the stapler provided by an embodiment of the present disclosure, the locking driving structure includes a bearing surface facing the common locking member; the bearing surface includes a first surface, a first slope surface arranged in sequence along the axial direction , a protruding surface, a second ramp, and a second surface, the first ramp connecting the first surface and the protruding surface, the second ramp connecting the protruding surface and the second surface, the first ramp connecting the protruding surface and the second surface There is a first included angle between a slope and the protruding surface, and a second included angle between the second slope and the protruding surface; in the longitudinal direction, the protruding surface reaches the second angle. The distance of the limit groove is smaller than the distance from the first surface to the second limit groove and smaller than the distance from the second surface to the second limit groove, and the distance from the protruding surface to the channel groove The distance from the first surface to the channel groove is smaller than the distance from the second surface to the channel groove, and the distance from the protruding surface to the first limit groove is smaller than the distance from the first surface to the channel groove. The distance from the first limit groove is smaller than the distance from the second surface to the first limit groove; in the initial stage, the second end portion is located at a distance from the first slope surface away from the first limit groove. one side of two ramps; in the closing phase, the locking drive structure is configured to move in the axial direction relative to the common locking member to move the second end along the first ramp to The protruding surface drives the common locking member to move in the longitudinal direction away from the second end portion, which in turn causes the second end portion to move along the protruding surface and the second ramp surface to the side of the second ramp facing away from the first ramp to move the common locking member in the longitudinal direction toward the second end; in the closing phase, the locking actuation Movement of the structure relative to the common locking member is synchronized with movement of the first and second limiting slots relative to the common locking member, so that at the second end relative to the During the movement of the locking driving structure, the neck portion moves from the second limiting groove to the first limiting groove through the passage groove.

For example, in the stapler provided by an embodiment of the present disclosure, the fixing bracket and the common locking member do not move in the axial direction, and the locking driving structure moves along the axial direction.

For example, the stapler provided by an embodiment of the present disclosure further includes a first driving mechanism and a second driving mechanism. The first drive mechanism is connected to the second drive mechanism and configured to drive the second drive mechanism to move; in the closing phase, the second drive mechanism is detachably connected to the closing mechanism and configured to Driven by the first drive mechanism toward the end effector, the closure mechanism is brought into contact with the cartridge assembly and anvil and applies pressure to the cartridge assembly and anvil to cause the tip The actuator is closed; the locking drive mechanism is provided on the second drive mechanism.

For example, in the stapler provided by an embodiment of the present disclosure, in the nail pushing stage, the second driving mechanism is configured to be separated from the closing mechanism and continue to move toward the end effector to drive the nail pushing assembly pushing the staples out of the cartridge assembly; the first surface is located at an end of the second surface proximate the end effector, at the second end relative to the end effector during the closing phase During the movement of the locking driving structure, the first end portion moves from the second limiting slot to the first limiting slot; in the nail pushing stage, the second end portion is in the A second surface moves over and is configured to not apply a force to the second end that drives the common locking structure to move in the longitudinal direction.

For example, in the stapler provided by an embodiment of the present disclosure, the locking mechanism further includes a second elastic member, and the second elastic member is configured to face a direction away from the second end portion along the longitudinal direction of the common locking member It is compressed during the movement and is restored under the action of its elastic restoring force during the movement of the common locking member in the longitudinal direction toward the second end.

For example, in the stapler provided by an embodiment of the present disclosure, the shape of the second end portion is a tapered shape that tapers toward the bearing surface along the longitudinal direction.

For example, in the stapler provided by an embodiment of the present disclosure, the first sloped surface and the second sloped surface are planes or curved surfaces.

For example, in the stapler provided by an embodiment of the present disclosure, in the opening phase after the staple pushing phase, the locking mechanism is further configured to eliminate the restriction on the position of the closing mechanism so that the end effector is opened.

For example, in the stapler provided by an embodiment of the present disclosure, in the opening stage after the nail pushing stage, the first limiting structure is configured to eliminate the second resistance, and the closing mechanism is in the first resistance The staple cartridge assembly and the staple anvil are moved away from the end effector by the action of the staple cartridge assembly to move the staple cartridge assembly away from each other and the end effector is opened.

For example, in the stapler provided by an embodiment of the present disclosure, the first limiting structure includes a first limiting groove and a first locking member, and the second limiting structure includes a second limiting groove and a second locking member When the first locking member and the second locking member are the same common locking member, in the opening stage, the common locking member is configured to move from the first limit groove to the second limit bit slot to revert to the initial state.

For example, in the stapler provided by an embodiment of the present disclosure, when the locking mechanism further includes a channel groove, in the opening stage, the common locking member is configured to pass through the channel groove from the first limiting groove Move to the second limit slot.

For example, in the stapler provided by an embodiment of the present disclosure, when the common locking member includes a first end, a second end and a neck, and the locking mechanism further includes a locking driving The direction from the first end to the second end is the longitudinal direction, the longitudinal direction is perpendicular to the axial direction, and the direction perpendicular to the axial direction and the longitudinal direction is the transverse direction; in the opening stage, the locking driving structure also It is configured to drive the common locking member to move in the longitudinal direction away from the second end portion to move the first end portion out of the first limit groove, and along with the first limit The movement of the position groove and the second position limit groove, the neck portion is configured to move from the second position limit groove to the first position limit groove through the passage groove.

For example, in the stapler provided by an embodiment of the present disclosure, the locking driving structure includes a bearing surface facing the locking member, and the bearing surface includes a first surface and a first slope that are sequentially arranged along the axial direction. , the protruding surface, the second ramp, and the second surface, during the opening phase, the locking drive structure is configured to move relative to the common locking member in the axial direction to cause the second end to move along the The second ramp is moved to the protruding surface to drive the common locking member to move in the longitudinal direction away from the second end, thereby causing the second end to follow the protruding surface and the second end in turn. moving the first ramp to a side of the first ramp away from the second ramp to move the common locking member in the longitudinal direction toward the second end; In the opening stage, the movement of the locking driving structure relative to the common locking member is synchronized with the movement of the first limiting groove and the second limiting groove relative to the common locking member, so that the During the movement of the two ends relative to the locking driving structure, the neck portion moves from the first limiting groove to the second limiting groove through the passage groove.

For example, an embodiment of the present disclosure provides a stapler further comprising a cutting device configured to cut the target tissue in a cutting stage after the staple pushing stage and before the opening stage.

For example, in the stapler provided by an embodiment of the present disclosure, the first elastic member is located at an end of the locking mechanism close to the end effector and is compressed as the closing mechanism moves toward the end effector or, the first elastic member is located at an end of the locking mechanism remote from the end effector and is stretched as the closure mechanism moves toward the end effector.

For example, the stapler provided by an embodiment of the present disclosure further includes a detachable connecting structure, and the detachable connecting structure is configured to be connected with the sleeve and the second driving mechanism in the closing stage so as to follow the second driving movement of the mechanism toward the end effector to drive the sleeve toward the end effector and configured to disengage from the sleeve after the end effector is closed to stop driving the sleeve to move ; the sleeve includes a connection hole penetrating the barrel wall of the sleeve, and one end of the detachable connection structure is detachably inserted into the connection hole so as to be detachably connected with the sleeve; the first A limit slot, the second limit slot and the channel slot are arranged opposite to the connection hole.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, rather than limit the present invention. .

FIG. 1A is a schematic diagram of the overall structure of a stapler according to an embodiment of the disclosure;

FIG. 1B is a top view of the stapler shown in FIG. 1A;

Fig. 2 is the overall cross-sectional schematic diagram along the B-B line in Fig. 1B;

3 is a schematic diagram of a part of a stapler including an end effector and a closing mechanism according to an embodiment of the present disclosure;

4 is a schematic diagram of a part of a stapler including a first driving mechanism, a second driving mechanism, a closing mechanism and an end effector according to an embodiment of the present disclosure;

5A is an overall schematic diagram of a detachable part of a stapler according to an embodiment of the present disclosure;

5B is a schematic cross-sectional view of a main body part of a stapler connected to a detachable part according to an embodiment of the present disclosure;

Fig. 5C is a schematic diagram of an end portion of a main body portion of a stapler connected to a detachable portion according to an embodiment of the present disclosure;

6A-6F are schematic diagrams of the connection and separation of a detachable connecting structure and a closing mechanism of a stapler during a closing process according to an embodiment of the present disclosure;

7 is a schematic diagram of a separable connection structure in the embodiment shown in FIGS. 6A-6F;

8 is a schematic diagram of a part of a stapler including a first elastic member according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a main body part including a first driving mechanism of a stapler according to an embodiment of the present disclosure;

Fig. 10A is a structural relationship diagram of a staple cartridge assembly and a staple push driving mechanism;

FIG. 10B is a top view of the stapler shown in FIG. 10A in the direction of the anvil;

FIG. 10C is a top view of the stapler shown in FIG. 10A in the direction of the staple cartridge;

10D is a schematic cross-sectional view along line J-J in FIG. 10C;

10E is a schematic cross-sectional view along the line H-H in FIG. 10B;

11A-11B are schematic diagrams of the connection between the nail-pushing drive mechanism and the nail-pushing slider that are not connected to each other;

12A is a schematic structural diagram of a nail push slider carrying a cutting knife;

12B is a schematic cross-sectional view of a nail push slider carrying a cutting knife;

Figure 12C is a schematic view of the end of the push nail slider close to the cutting drive mechanism;

12D is a schematic structural diagram of a cutting drive mechanism;

FIG. 12E is a schematic diagram of the connection of the cutting drive mechanism and the nail pushing slider connected to each other;

13A is a schematic diagram of a nail pushing process;

Figure 13B is a schematic view of the cutting blade not in contact with the target tissue during the push nail stage;

13C is a schematic diagram of the nail push slider carrying the cutting knife from the first end of the end effector to the second end of the end effector;

13D is a schematic view of the cutting blade moving to contact the target tissue during the push nail stage;

14A is a schematic diagram 1 of a front swing drive assembly of a stapler according to an embodiment of the disclosure;

14B is a second schematic diagram of a front swing driving assembly of a stapler according to an embodiment of the present disclosure;

15A-15B are schematic diagrams of a front swing driving member of a stapler according to an embodiment of the present disclosure;

16A is a partial schematic diagram of a rear swing drive assembly of a stapler according to an embodiment of the present disclosure;

16B is a partial schematic diagram of a manual adjustment driving mechanism of a stapler according to an embodiment of the present disclosure;

17 is a schematic diagram of the stapler at the second end of the end effector before the end effector is closed in the stapler according to an embodiment of the present disclosure;

18A-18B are schematic diagrams of a handle provided by an embodiment of the present disclosure;

Figure 19 is an enlarged schematic view of a dial and a two-way control button;

FIG. 20 is a schematic diagram of a stapler body according to an embodiment of the disclosure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used herein should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first", "second" and similar terms used in the description of the patent application and the claims of the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. "Comprises" or "comprising" and similar words mean that the elements or things appearing before the word encompass the elements or things recited after the word and their equivalents, but do not exclude other elements or things. "Inner", "outer", "upper", "lower", etc. are only used to indicate the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

The drawings in the present disclosure are not drawn strictly to the actual scale, and the number of staple grooves in the staple cartridge for accommodating staples is not limited to the number shown in the drawings, and the specific size and number of each structure can be based on actual Need to be determined. The drawings described in the present disclosure are only schematic structural diagrams.

At least one embodiment of the present disclosure provides a stapler that includes an end effector, a closing mechanism, a staple push assembly, and a first driving mechanism. The end effector includes a staple cartridge assembly and a staple anvil, and the staple cartridge assembly is provided with staples; the closing mechanism is configured to drive the staple cartridge assembly and the staple anvil to engage so as to close the end effector; the staple push assembly is configured to remove the staples from the staples The first drive mechanism is configured to: in the closing stage, the first drive mechanism is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector; in the nail pushing stage after the closing stage, the first drive mechanism Detach from the closure mechanism and drive the staple pusher assembly to push the staples out of the staple cartridge assembly. The stapler can be used in the medical field, for example, as a surgical instrument in a surgical procedure. During the operation of the stapler, the closing stage and the nail pushing stage are independent of each other and do not interfere with each other, and the first drive mechanism is configured to drive the realization of the two stages.

At least one embodiment of the present disclosure provides a stapler that includes an end effector, a closing mechanism, a first driving mechanism, and a cutting device. The end effector includes a staple cartridge assembly and a staple anvil, the staple cartridge assembly is provided with staples; the closing mechanism is configured to drive the staple cartridge assembly and the staple anvil to engage to clamp the target tissue; the staple push assembly is configured to push the staples from the staple cartridge The target tissue is pushed into the assembly to suture the target tissue; the first drive mechanism is configured to: in the closing stage, the first drive mechanism and the closing mechanism are detachably connected to drive the closing mechanism to close the end effector; pushing after the closing stage In the staple stage, the first driving mechanism is separated from the closing mechanism and drives the staple push assembly to push out the staples from the staple cartridge assembly; the cutting device is configured to be driven by the first driving mechanism in the cutting stage after the target tissue is sutured as a whole to the target tissue for cutting.

At least one embodiment of the present disclosure provides a stapler that includes an end effector, a closure mechanism, a staple push assembly, and a locking mechanism. The end effector includes a staple cartridge assembly and a staple anvil, the staple cartridge assembly is provided with staples; in an initial state, the end effector is in an open state; in a closing phase, the closing mechanism is configured to drive the staples A cartridge assembly and the staple anvil are engaged to close the end effector to clamp target tissue; in a staple push phase following the closure phase, the staple push assembly is configured to remove the staples from the staples pushing out into the cartridge assembly to staple the target tissue; a locking mechanism configured to confine the closure mechanism in a first position during the staple pushing phase to maintain the closure mechanism in a closed state of the end effector, and is configured to define the closure mechanism in a second position to maintain the end effector in the open state in the initial state.

At least one embodiment of the present disclosure provides a stapler, which includes an end effector, a closing mechanism, a staple pushing assembly, a first driving mechanism, and a swinging mechanism. The end effector includes a staple cartridge assembly and a staple anvil, the staple cartridge assembly is provided with staples; the closing mechanism is configured to drive the staple cartridge assembly and the staple anvil to engage so as to close the end effector to clamp the target tissue a staple pusher assembly configured to push the staples out of the staple cartridge assembly; the first drive mechanism configured to: in a closing stage, the first drive mechanism is detachably connected to the closing mechanism to drive The closure mechanism closes the end effector; in a staple push phase following the closure phase, the first drive mechanism disengages the closure mechanism and drives the staple push assembly to remove the staples from the cartridge The swing mechanism includes a front swing drive assembly and a rear swing drive assembly, the front swing drive assembly and the rear swing drive assembly are configured to drive the end effector to swing; the stapler includes a body portion and a detachable portion, the detachable portion being detachably connected to the body portion; the end effector and the front swing drive assembly are located on the detachable portion, the first drive mechanism and the A rear swing drive assembly is located on the body portion; the detachable portion is removably connected to the body portion to removably connect the front swing drive assembly to the rear swing drive assembly.

At least one embodiment of the present disclosure provides a stapler that includes an end effector, a closure mechanism, and a staple push assembly. The end effector includes a staple cartridge assembly and a staple anvil, the staple cartridge assembly is provided with staples; the closing mechanism is configured to drive the staple cartridge assembly and the staple anvil to engage in a closing phase to clamp the target tissue, the The end effector has a first end proximate the closure mechanism and a second end remote from the closure mechanism; the tack pusher assembly is configured to go from the second end to the first end during a tack push stage following the closure stage The end pushes the staples from the cartridge assembly into the target tissue to staple the target tissue from the second end to the first end.

At least one embodiment of the present disclosure provides a handle configured to be detachably connected to a detachable portion, the detachable portion including an end effector, the end effector including a cartridge assembly and an anvil, wherein the The handle includes a dial switch, the dial switch includes a dial disposed on the first surface of the handle, the dial is configured to be toggled to rotate to control the swing direction and swing angle of the end effector . The handle can be used for a stapler, and the stapler can be used as a medical instrument, such as a surgical instrument, for holding the target tissue, and suturing and cutting the target tissue.

At least one embodiment of the present disclosure provides a stapler body, the stapler body comprising any of the handles provided in the embodiments of the present disclosure, and a drive part connected to the handle; the entire extension direction of the drive part is axial , the axial direction intersects with the extension direction of the handle; the end of the drive part away from the handle is detachably connected to the detachable part, and includes an electric motor and a rear swinging drive member; the electric motor is connected to the detachable part. The dial switch is signal-connected, and the dial switch controls the operation of the electric motor; the rear swing drive member is connected to the electric motor and extends along the axial direction, and the electric motor is configured to be connected between the dial switch and the electric motor. Controlling the rotation to drive the rear swing drive member to move in the axial direction to drive the end effector to swing.

At least one embodiment of the present disclosure provides a stapler, and the stapler includes any one of the stapler bodies provided in the embodiments of the present disclosure, and the detachable part. The detachable portion is detachably connected to the main body portion, and the detachable portion further includes a front swing drive assembly; the front swing drive assembly is connected to the end effector, and the detachable portion is connected to the stapler body Removably connected to removably connect the front swing drive assembly to the rear swing drive member, the front swing drive assembly driving the end effector to swing under the drive of the rear swing drive member.

Exemplarily, FIG. 1A is a schematic diagram of the overall structure of a stapler 100 according to an embodiment of the present disclosure, FIG. 1B is a top view of the stapler shown in FIG. 1A , and FIG. 2 is an overall cross-section along line B-B in FIG. 1B . Schematic diagram, FIG. 3 is a partial schematic diagram of a stapler including an end effector and a closing mechanism according to an embodiment of the present disclosure, and FIG. 4 is a schematic diagram of a stapler according to an embodiment of the present disclosure including a first driving mechanism, a first driving mechanism Partial schematic diagram of two drive mechanism, closing mechanism and end effector. The stapler 100 can be applied in the medical field, and the embodiment of the present disclosure is described by taking the stapler 100 as a surgical instrument in a surgical procedure as an example.

1-4 , the stapler 100100 includes an end effector 11 , a closing mechanism 2 , a staple push assembly and a first driving mechanism 1010 . The end effector 11 includes a staple cartridge assembly 11 and a staple anvil 12. The staple cartridge assembly 11 is provided with staples. The closing mechanism 2 is configured to drive the staple cartridge assembly 11 and the staple anvil 12 together to close the end effector 11 ; the staple push assembly 11 is configured to push the staples out of the staple cartridge assembly 11 . The first driving mechanism 1010 is configured to: in the closing stage, the first driving mechanism 1010 is detachably connected with the closing mechanism 2 to drive the closing mechanism 2 to close the end effector 11 to clamp the target tissue; in the nail pushing stage after the closing stage , the first driving mechanism 1010 is separated from the closing mechanism 2 and drives the staple push assembly to push out the staples from the staple cartridge assembly to drive the staples into the target tissue and suturing the target tissue. The above-mentioned target tissue is, for example, the target tissue to be sutured and cut during surgery, such as human or animal body tissue. During the operation of the stapler 100100, the closing stage and the nail pushing stage are independent of each other and do not interfere with each other, and the first driving mechanism 1010 is configured to drive the realization of the two stages, which greatly simplifies the driving structure, thereby effectively simplifying the The overall structure of the stapler 100 saves space and is conducive to reducing the radial size of the stapler 100, so that it is easy to enter the surgical object such as the human body during the operation, and the injury to the surgical object is reduced; and the simplification of the driving structure enables anastomosis. The operation process of the stapler 100 is easier and smoother to realize, which makes an outstanding contribution to improving the reliability of operation, and also reduces the difficulty of designing a control system for controlling the operation process of the stapler 100 .

For example, the staple cartridge assembly 11 includes a first end near the closing mechanism, the staple anvil 12 includes a first end near the closing mechanism, and the first end of the staple cartridge assembly 11 is articulated with the first end of the staple anvil 12; the closing mechanism is configured as Pressure is applied to the first end of the cartridge assembly 11 and the first end of the staple anvil 12 to bring the two toward each other into engagement. The anvil 12 includes a working surface facing the cartridge assembly 11, the cartridge assembly 11 includes a nail ejecting surface opposite the working surface, and the closure mechanism 2 is configured to drive the working surface and the nail ejecting surface toward each other for engagement.

In the embodiment shown in FIGS. 1-4 , at least one staple slot 110 is provided on the staple cartridge, each staple slot having an opening toward the staple anvil 12 . In some examples, the opening of each staple slot may independently be square, circular, triangular, etc., and independently configured to allow staples contained in the staple slot to be ejected through its opening during the staple pushing stage. The embodiments of the present disclosure do not limit this.

In some examples, the openings of the plurality of staple slots may be arranged uniformly on the staple exit face of the staple cartridge or arranged in a pattern. For example, the openings of the plurality of staple grooves can be arranged to form at least one straight line, rectangle, triangle, rhombus, circle, etc. on the staple outlet surface of the staple cartridge. The embodiments of the present disclosure do not limit this.

In some examples, the staples may be formed of materials that are compatible with, or at least harmless to, the human body. For example, the material of the staple may include medical stainless steel, titanium, titanium alloy, biodegradable magnesium alloy and other materials. Further, for example, at least a portion of the surface of the staple may have a passivation layer, a plating layer or a coating or the like that is compatible with the human body or at least harmless to the human body. The embodiments of the present disclosure do not limit this.

In some examples, the anvil 12 may be formed of a rigid material that is compatible with the human body or at least harmless to the human body, for example. The material of the anvil 12 may include, for example, metal materials such as medical stainless steel, titanium, titanium alloy, and cobalt alloy; or non-metallic materials such as medical ceramics and hard plastics. For example, at least a portion of the inner surface and/or the outer surface of the anvil 12 may also have a passivation layer, plating or coating, etc. that is compatible with the human body or at least harmless to the human body. The embodiments of the present disclosure do not limit this.

For example, as shown in Figs. 2 and 4, the stapler 100 further includes a second drive mechanism 20, which is connected to the first drive mechanism 10, is detachably connected to the closing mechanism during the closing phase, and is configured to A driving mechanism 10 moves toward the end effector 1 so that the closing mechanism contacts the staple cartridge assembly 11 and the staple anvil 12 and applies pressure to the staple cartridge assembly 11 and the staple anvil 12 to close the end effector 1; the second driving The mechanism 20 is also configured to be disengaged from the closing mechanism during the push stage, and to drive the push assembly to push the staples out of the cartridge assembly 11 under the drive of the first drive mechanism 10 .

5A is an overall schematic diagram of a detachable part 3 of a stapler 100 according to an embodiment of the disclosure. As shown in FIG. 5A , the stapler 100 includes a main body part 4 and a detachable part 3 , and the detachable part 3 and the main body part 4 Removably connected; the first drive mechanism 10 is located in the main body part 4, the second drive mechanism 20, the closing machine, the push nail assembly and the end effector 1 are located in the removable part 3, and the removable part 3 is connected with the main body part 4 to The second drive mechanism 20 is detachably connected to the first drive mechanism 10 . The detachable part 3 is designed to enter the surgical object such as the human body during the operation, and the main body part 4 does not need to enter the operation object. The detachable part 3 can be replaced, for example, one detachable part 3 is replaced for each operation, while There is no need to replace the main body part 4 with the hostile drive mechanism, resulting in considerable cost savings. Compared with the detachable structure that can be detached from the handle, the detachable part 3 reduces the structure and volume of the detachable part, and further reduces the number of disposable parts, thereby further reducing the cost and improving the repetition of the main body. utilization.

For example, as shown in FIG. 2 and FIG. 4 , the extension directions of the first driving mechanism 10 and the second driving mechanism 20 are in the axial direction, and the first driving mechanism 10 includes a first end away from the end effector 1 in the axial direction and a The second end opposite to the first end, the second drive mechanism 20 includes a first end close to the first drive mechanism 10 and a second end away from the first drive mechanism 10 in the axial direction. FIG. 5B is a schematic cross-sectional view of the main body part 4 of a stapler 100 according to an embodiment of the disclosure being connected to the detachable part 3 , and FIG. 5C is a schematic diagram of the main body part 4 of the stapler 100 according to an embodiment of the disclosure. Schematic view of the end connected to the detachable part 3. For example, as shown in FIGS. 5B-5C , the main body portion 4 and the detachable portion 3 may be in the form of plugging. When connecting the main body portion 44 with the detachable portion 3, the first end of the second drive mechanism 20 has a groove 200, and the second end of the first drive mechanism 10 has a protruding structure configured to be able to be inserted into the groove Then, after rotating the detachable part 3 in the positive direction relative to the main body part 4, for example, after rotating it by 90°, the protruding structure of the second end of the first driving mechanism 10 is replaced by the groove wall of the groove of the first end of the second driving mechanism 20 Blocking so that it cannot move relative to the second driving mechanism 20 in the axial direction, so as to lock the protruding structure of the second end of the first driving mechanism 10 in this position, and realize the connection between the second end of the first driving mechanism 10 and the second driving mechanism 20 The first end is connected with the first drive mechanism 10; when the detachable part 3 needs to be detached from the main body part 4, the detachable part 3 is rotated in the opposite direction to the forward direction relative to the main body part 4, for example, rotated 90° , the locking of the protruding structure of the second end of the first driving mechanism 10 can be released, so as to separate the first driving mechanism 10 and the second driving mechanism 20 , that is, the detachable part 3 and the main body part 4 are separated. This detachable connection method is simple to operate and easy to control, which is beneficial to the stability of the equipment during use and installation. Of course, the main body part 4 and the detachable part 3 can also be connected by a variety of connection methods such as screw connection or snap connection, and the second end of the first drive mechanism 10 and the first end of the second drive mechanism 20 can also be connected by other snap connections. , hook, magnetic connection and other detachable connection methods, which are not limited in this disclosure.

For example, in the closing phase in which the first drive mechanism 10 drives the closing mechanism to close the end effector 1 and the staple push phase in which the staple pusher assembly is driven to push the staples out of the staple cartridge assembly 11 , the first drive mechanism 10 is directed toward the end effector 1 . move. For example, the second drive mechanism 20 is further configured to be disengaged from the closure mechanism during the staple push stage, and to drive the staple push assembly to push the staples out of the cartridge assembly 11 under the drive of the first drive mechanism 10 . For example, the second driving mechanism 20 is also moved axially toward the end effector 1 under the driving of the first driving mechanism 10 during the closing stage and the nail pushing stage. For example, in the closing stage and the nail pushing stage, both the first driving mechanism 10 and the second driving mechanism 20 perform a substantially linear movement in the axial direction. For example, the first driving mechanism 10 is a single driving rod. In this way, the single driving rod moves in the axial direction to drive the completion of the closing stage and the nail pushing stage, which greatly simplifies the driving structure and thus effectively simplifies the overall structure of the stapler 100. It saves space and is beneficial to reduce the size of the stapler 100, so that it is easy to enter the surgical object such as the human body during the operation, thereby reducing the damage to the surgical object; and the simplification of the driving structure makes the operation process of the stapler 100 easier and smoother. , which has a prominent contribution to improving the reliability of operation, and also reduces the difficulty of designing a control system for controlling the operation process of the stapler 100 .

For example, the stapler 100 also includes a detachable connection structure 6 that is configured to connect with the closure mechanism and the second drive mechanism 20 during the closing phase to move toward the end effector 1 as the second drive mechanism 20 moves , to drive the closing mechanism to move toward the end effector 1 , thereby closing the end effector 1 , and the detachable connecting structure 6 is configured to be disengaged from the closing mechanism after the closing mechanism is closed. The extension direction of the first driving mechanism 10 and the second driving mechanism 20 is the axial direction, and the direction perpendicular to the axial direction is the longitudinal direction. The separable connecting structure 6 includes a first end and a second end in the longitudinal direction; the second driving mechanism 20 Including a first connecting structure, the closing mechanism 2 includes a second connecting structure.

For example, when the detachable connecting structure 6 drives the closing mechanism to move toward the end effector 1 , the first end of the detachable connecting structure 6 is connected to the second driving mechanism 20 through the first connecting structure, and the first end of the detachable connecting structure 6 is connected with the second driving mechanism 20 . The two ends are connected with the closing mechanism through a second connecting structure; the separable connecting structure 6 is configured to be movable longitudinally relative to the first connecting structure and the second connecting structure to separate the second end of the separable connecting structure 6 from the closing mechanism or The first end of the detachable connection structure 6 is detached from the second drive mechanism 20 .

For example, the stapler 100 further includes a separation drive structure configured to apply a longitudinal driving force to the detachable connecting structure 6 after the end effector 1 is closed so that the detachable connecting structure 6 is longitudinally driven by the driving force The movement disengages the second end of the separable connecting structure 6 from the closing mechanism or the first end of the separable connecting structure 6 from the second drive mechanism 20 .

Exemplarily, FIGS. 6A-6F are schematic diagrams of the connection and separation of the detachable connecting structure 6 and the closing mechanism during the closing process of a stapler 100 according to an embodiment of the present disclosure. 6A-6E, for example, the closing mechanism is the sleeve 2 sleeved on the outer side of the second driving mechanism 20, the second connecting structure is the connecting hole 23 passing through the cylindrical wall of the sleeve 2, and the second connecting structure 6 can be separated. The end is detachably inserted into the connection hole 23 . FIG. 7 is a schematic diagram of the separable connecting structure 6 in the embodiment shown in FIGS. 6A-6F . As shown in FIG. 7 , in this embodiment, the separable connecting structure 6 is a slider, and the first connecting structure is disposed on The groove 203 of the second drive mechanism 20 . Of course, in other embodiments, the separable connection structure 6 can also be of other types, not limited to the slider; the first connection structure is not limited to a groove, and the second connection structure is not limited to the above-mentioned through-sleeve 2 The connecting hole 23 of the cylindrical wall can be used as long as it can realize the above-mentioned functions. The closing mechanism is also not limited to the sleeve 2 , and can also be any other mechanism that can drive the end effector 1 to close and open under the driving of the first driving mechanism 10 .

The sleeve 2 may be formed of, for example, a rigid material that is compatible with the human body or at least harmless to the human body. For example, the material of the sleeve 2 may include, for example, metal materials such as medical stainless steel, titanium, titanium alloy, and cobalt alloy; or non-metallic materials such as medical ceramics and hard plastics. Further, at least a part of the inner surface and/or the outer surface of the sleeve 2 may also have a passivation layer, a plating layer or a coating layer that is compatible with the human body or at least harmless to the human body. The embodiments of the present disclosure do not limit this.

For example, the sleeve 2 is a hollow arc-shaped cylinder with a circular cross section, so as to reduce the contusion to the tissue of the surgical object when the sleeve 2 enters the surgical object such as the human body during the operation. The sleeve 2 has a cylinder wall and a cavity surrounded by the cylinder wall. In the closing stage, structures such as the second driving mechanism 20 are located in the cavity, so as to minimize the structures located outside the sleeve 2, so as to minimize the need for surgery. When the sleeve 2 enters the body of the surgical subject, the contusion to the tissue of the surgical subject. One end of the sleeve 2 remote from the end effector 1 is partially closed and the other end close to the end effector 1 is open.

As shown in FIG. 7 , in the closing stage, the first end of the separable connecting structure 6 is connected with the second driving mechanism 20 through the connecting hole 23 on the sleeve 2 , and the second end of the separable connecting structure 6 passes through the second driving mechanism The groove 203 of the 20 is connected with the sleeve 2, so that the closable mechanism is connected with the second driving mechanism 20 through the detachable connecting structure 6, so that the sleeve 2 moves toward the end effector 1 with the movement of the second driving mechanism 20. move to drive the sleeve 2 towards the end effector 1. Referring to FIG. 3 , the staple cartridge assembly 11 includes a first end close to the sleeve 2 , and the staple anvil 12 includes a first end close to the sleeve 2 ; in the closing stage, the second driving mechanism 20 is driven by the first driving mechanism 10 to face The end effector 1 moves to drive the sleeve 2 to move toward the end effector 1, so that the sleeve 2 is sleeved on the first end of the staple cartridge assembly 11 and the first end of the staple anvil 12, and is opposite to the first end of the staple cartridge assembly 11. One end and the first end of the anvil 12 apply pressure to close the end effector 1 so that the end effector 1 holds the target tissue.

The detachable connecting structure 6 in Figures 6A-6F is detachably connected to the second drive mechanism 20 and to the closing mechanism. As shown in FIG. 7 , the detachable connecting structure 6 includes a main body 61 and a first boss 611 protruding from a first surface of the main body 61 , the first surface of the main body 61 faces the groove 203 , and the first boss 611 Located at the first end of the separable connecting structure 6; the first boss 611 includes a first inclined surface 6111, and the first inclined surface 6111 intersects the axial direction and the longitudinal direction. As shown in FIG. 6E , the stapler 100 further includes a fixing bracket 8, the closing mechanism is arranged on the fixing bracket 8, and the fixing bracket 8 includes a first sliding groove 81 and a second sliding groove 82; the first sliding groove 81 extends in the axial direction; The second sliding groove 82 extends in the axial direction, communicates with the first sliding groove 81, is located on the side of the first sliding groove 81 close to the end effector 1, and includes a first groove wall and a second groove opposite to each other in the lateral direction The transverse direction is perpendicular to the axial direction and the longitudinal direction, and the first groove wall is used as the above-mentioned separation driving structure; Vertically intersect.

In the closing stage, one end of the main body 61 of the separable connecting structure 6 is located in the connecting hole 23 of the sleeve 2 to drive the sleeve 2 to move in the axial direction, and the first boss 611 is partially embedded in the groove 203 so that the sleeve 2 can be moved in the axial direction. The separation link structure 6 moves toward the end effector 1 with the movement of the second drive mechanism 20 . The separation driving structure is located on the side of the detachable connecting structure 6 close to the end effector 1 , and the first barrier ramp 801 drives the sleeve 2 to move axially toward the end effector 1 at the detachable connecting structure 6 to close the end effector 1 After that, it contacts with the first inclined surface 6111 of the first boss 611 to apply axial resistance and longitudinal driving force to the first inclined surface 6111. The first barrier inclined surface 801 is parallel to the first inclined surface 6111 and can be separated and connected. The structure 6 is moved longitudinally under the action of a driving force in the longitudinal direction, so that the second end of the separable connecting structure 6 is separated from the closing mechanism. In the present embodiment, for example, in the closing stage, the first boss 611 of the separable connecting structure 6 slides at a distance between the end face of the groove 203 located at least partially in the longitudinal direction and the bottom face of the groove 203 facing the end face. distance, so that the detachable connecting structure 6 can be slid longitudinally towards the bottom surface of the groove 203 to be separated from the sleeve 2 during the nail pushing stage. That is, after the detachable connecting structure 6 drives the closing mechanism to move toward the end effector 1 in the axial direction to close the end effector 1 , the detachable driving structure contacts the first inclined surface 6111 to apply the axial direction to the first inclined surface 6111 The resistance and the driving force in the longitudinal direction, the detachable connecting structure 6 moves in the longitudinal direction under the action of the driving force in the longitudinal direction.

As shown in FIG. 6F , after the closing stage, at least part of the main body portion 61 of the separable connecting structure 6 in the axial direction enters the second chute 82 to bring the first barrier slope 801 into contact with the first slope 6111 . In this way, the limited space in the sleeve 2 is fully utilized to realize that the detachable connecting structure 6 connects the second driving mechanism 20 and the sleeve 2 in the closing stage and is separated from the sleeve 2 in the push nail stage after the closing stage, so that the In the nail pushing stage, when the first driving mechanism 10 and the second driving mechanism 20 drive the nail pushing assembly to push nails, the sleeve 2 no longer moves with the axial movement of the second driving mechanism 20 , and the closed end effector 1 is maintained. of stability.

For example, the thickness of the first boss 611 in the lateral direction is greater than the depth of the groove 203 in the lateral direction, so that the main body portion 61 of the separable connecting structure 6 is located outside the groove 203, so that the main body portion of the separable connecting structure 6 can enter. The second chute 82 .

For example, in the longitudinal direction, the first inclined surface 6111 extends beyond the groove 203 , that is, in the longitudinal direction, the first inclined surface 6111 is located outside the groove 203 to ensure that after the main body of the detachable connecting structure 6 enters the second sliding groove 82 It can be in contact with the first barrier slope 801 to ensure the reliability of the normal operation of the stapler 100 in the closing stage.

For example, in the embodiment shown in FIGS. 6A-6F , the included angle between the first inclined surface 6111 and the axial direction close to the end effector 1 is an obtuse angle, and the included angle is the first inclined surface 6111 and the sleeve 2 the angle of the central axis. The detachable connecting structure 6 moves away from the closing mechanism in the longitudinal direction under the action of the longitudinal driving force and is separated from the closing mechanism. In this way, in the stage of pushing the nail, the detachable connecting structure 6 is located inside the cavity of the sleeve 2, avoiding the sleeve There are obvious protruding structures on the outside of the sleeve 2, so as to avoid or reduce the contusion to the tissue of the surgical object caused by the protruding structures located on the outside of the sleeve 2 when the sleeve 2 enters the surgical object such as the human body during the operation.

Of course, in other embodiments, the included angle between the first inclined surface 6111 and the axial direction close to the end effector 1 can be designed to be an acute angle, and the detachable connecting structure 6 approaches the longitudinal direction under the action of the longitudinal driving force. The sleeve 2 moves and separates from the second driving mechanism 20, that is, the direction of the driving force is opposite to the direction of the driving force in the embodiment shown in Figs. The moving directions of the separable connecting structures 6 in the illustrated embodiment are opposite. In this case, the detachable connecting structure 6 is located on the sleeve 2 and does not move with the movement of the second driving mechanism 20 during the nail pushing stage. That is, in some other embodiments, the first end of the separable connecting structure 6 is separated from the second driving mechanism 20 , and after the sleeve 2 drives the end effector 1 to close, the separable connecting structure 6 is separated from the second driving mechanism 20 . Thereby, the movement of the driving closing mechanism is stopped.

In some embodiments, eg, as shown in FIG. 7 , the separable connection structure 6 further includes a second boss 612 . The second boss 612 protrudes from the second surface 05 of the main body and is located at the first end of the separable connecting structure 6 , and includes a second inclined surface 6121 intersecting with the axial and longitudinal directions. The second surface 05 and the first surface 01 is opposite; the second groove wall also serves as the separation drive structure and includes a second barrier ramp 802 facing the separable connecting structure 6, the second barrier ramp 802 being configured to be in contact with the second ramp 6121 to give the second ramp 6121 Applying resistance in the axial direction and driving force in the longitudinal direction and parallel to the second inclined surface 6121; after the closing stage, at least part of the main body of the detachable connecting structure 6 in the axial direction enters the second chute 82, And the first boss 611 and the second boss 612 are blocked from the second chute 82 by the first groove wall and the second groove wall, so that the first barrier inclined surface 801 is in contact with the first inclined surface 6111, and the second barrier The inclined surface 802 is in contact with the second inclined surface 6121 . The second boss 612 can not only increase the symmetry of the separable connecting structure 6 and improve the structural stability of the separable connecting structure 6 , but also increase the size of the driving force, which is beneficial to ensure that the separable connecting structure 6 and the sleeve 2 are driven. Separation reliability. For example, after the first barrier inclined surface 801 and the first inclined surface 6111 are in contact, the two are complementary; after the second barrier inclined surface 802 and the second inclined surface 6121 are in contact, the two are complementary.

For example, as shown in FIG. 7 , the first boss 611 further includes a first platform portion, the first platform portion has a first horizontal surface 6110, the first horizontal surface 6110 intersects and connects with the first inclined surface 6111, and the first platform portion can The mechanical strength of the first boss 611 is increased, so that when it is located in the groove 203, the structure and position are more stable. Similarly, the second boss 612 further includes a second platform portion, the second platform portion has a second horizontal plane, the second horizontal plane intersects and connects with the second inclined surface 6121 , and the second platform portion can increase the In terms of mechanical strength, when the first boss 611 has a first platform portion, the symmetry of the separable connecting structure 6 is increased to make its structure more stable.

For example, the width of the first sliding slot 81 in the lateral direction is larger than the width of the second sliding slot 82 in the lateral direction, so that only the main body of the separable connecting structure 6 can enter the second sliding slot 82, and the first protruding The stage 611 and the second boss 612 cannot enter the second chute 82 , so that the above-mentioned drive-detachable connecting structure 6 can be moved longitudinally to be separated from the sleeve 2 .

For example, in some embodiments, the width of the second chute 82 in the lateral direction is larger than the width of the main body part and smaller than the sum of the width of the first boss 611 , the width of the main body part and the width of the second boss 612 , so as to be in the To ensure that when the main body of the separable connection structure 6 slides in the first chute 81, there is sufficient space left for the first boss 611 and the second boss 612, and at the same time, the width of the first chute 81 is reduced as much as possible, It is beneficial to the stability of the position of the main body of the separable connection structure 6 when sliding in the first chute 81 , and also to improve the mechanical strength and mechanism stability of the fixing bracket 8 , thereby improving the stability of the entire stapler 100 .

For example, in other embodiments, the width of the first chute 81 in the lateral direction is greater than the width of the first boss 611 in the lateral direction, the width of the main body in the lateral direction, and the width of the second boss 612 in the lateral direction The sum is to ensure that when the main body of the separable connecting structure 6 slides in the first chute 81, there is sufficient space left for the first boss 611 and the second boss 612, so as to ensure the subsequent separable connecting structure 6 The main body part of the device enters the second chute 82 smoothly.

For example, the axial length of the second chute 82 is smaller than the axial length of the first chute 81 , so as to minimize the size of the slot on the fixing bracket 8 and improve the mechanical strength and mechanism stability of the fixing bracket 8 Therefore, the stability of the entire stapler 100 is improved.

The above embodiments are exemplary, in other embodiments, the detachable connection structure 6 may also be fixedly connected to one of the second driving mechanism 20 and the closing mechanism, and is connected to the other of the second driving mechanism 20 and the closing mechanism. A detachable connection.

As shown in FIG. 3 , for example, the end of the end effector 1 that is close to the sleeve 2 includes a guide slope 101 , the guide slope 101 has an included angle with the axial direction and the longitudinal direction, and the guide slope 101 includes a first slope close to the sleeve 2 in the axial direction. One end and a second end remote from the sleeve 2, the first end is also longitudinally closer to the sleeve 2 than the second end. In the closing stage, the sleeve 2 is in contact with the guide slope 101 before contacting with the staple cartridge assembly 11 and the staple anvil 12 and slides along the guide slope 101 toward the staple cartridge assembly 11 and the staple anvil 12 , so that it is easier to realize the sleeve 2 being sleeved on the staple cartridge assembly 11 and the staple anvil 12 . Pressure is applied to the first end of the staple cartridge assembly 11 and the first end of the staple anvil 12 to make the end effector 1 close, increasing the normal closing stage reliability.

For example, the cylindrical wall of the sleeve 2 includes a curved surface such as the above-mentioned curved surface. As shown in FIG. 3 , at least one of the first end of the staple cartridge assembly 11 and the first end of the staple anvil 12 , such as the The first end includes a curved force-receiving surface 102 that is configured to contact and withstand the pressure exerted by the sleeve 2 to increase the effect of the sleeve 2 on the end during the closing phase The force application area of the device 1 is beneficial to drive the end effector 1 to close and the stability after closing, and reduce the slippage of the target tissue. For example, the sleeve 2 includes an inner surface in contact with the force-bearing surface, and the inner surface is a curved surface; the curvature of the force-bearing surface is equal to the curvature of the inner surface of the sleeve 2, so as to further increase the impact of the sleeve 2 on the end effector during the closing stage The force application area of 1 is beneficial to drive the end effector 1 to close and the stability after closing, and reduce the slippage of the target tissue.

FIG. 13A is a schematic diagram of the nail pushing process. For example, referring to FIG. 13A , the nail push assembly includes a nail push piece 700 , a nail push slider 60 and a nail push drive mechanism 40 . The staple pushing piece 700 is configured to apply pressure to the staples to push the staples out from the staple cartridge; the staple pushing slider 60 is configured to apply pressure to the staple pushing piece 700 to drive the staple pushing piece 700 to apply the staple pushing pressure to the staples; push the staples The driving mechanism 40 is configured to move in the axial direction under the driving of the first driving structure and the second driving mechanism 20 to drive the nail pushing slider 60 to move in the axial direction, so that the nail pushing slider 60 contacts the nail pushing piece 700 to push the nail The nail tab 700 applies nail push pressure.

For example, in some embodiments, before the nail pushing, the nail pushing driving mechanism 40 is connected with the second driving mechanism 20, and as the second driving mechanism 20 moves, it moves to contact with the nail pushing slider 60, which is more conducive to The reliability of the second driving mechanism 20 for subsequent driving of the nail pushing driving mechanism 40 to move and the operational stability of the stapler 100 during the pushing stage of the stapler can reduce the design difficulty.

For example, in other embodiments, before the nail pushing, the nail pushing driving mechanism 40 is located on the side of the second driving mechanism 20 close to the nail pushing slider 60 and there is a space between it and the second driving mechanism 20, that is, this When the nail pushing driving mechanism 40 is not connected with the second driving mechanism 20 , the second driving mechanism 20 moves toward the end effector 1 in the axial direction and is connected with the nail pushing slider 60 after passing through an interval.

For example, after the staple push phase, the first drive mechanism 10 is further configured to drive the closure mechanism to move away from the end effector 1 to move the staple cartridge assembly 11 and the staple anvil 12 away from each other to open the end effector 1 . That is, a closure mechanism such as sleeve 2 moves away from end effector 1 to release the first end of anvil 12 and the first end of cartridge assembly 11 to open anvil 12 and cartridge assembly 11 .

FIG. 8 is a schematic diagram of a part of a stapler 100 including a first elastic member 71 according to an embodiment of the disclosure. For example, as shown in FIG. 8 , the stapler 100 further includes a first elastic member 71 which is connected with the closing mechanism. In the closing stage, the closing mechanism moves toward the end effector 1 to close the end effector 1 and elastically deform the first elastic member 71 ; after the nailing stage, the closing mechanism operates when the elastically deformed first elastic member 71 is in its place. Move away from the end effector 1 under the action of elastic restoring force.

The first elastic member 71 is deformed under an external load, and after the external load is removed, the deformation completely disappears and the original shape and size are completely restored. For example, the material of the first elastic member 71 may include some resins or natural materials with elastic compression deformation properties, such as but not limited to thermoplastic elastomer (thermoplastic elastomer, TPE), thermoplastic polyurethane (thermoplastic polyurethane, TPU), thermoplastic Polyester elastomer (thermoplastic polyester elastomer, TPEE) and so on. The first elastic member 71 can be made of, for example, a block-shaped elastic member or a hollow cylindrical elastic member. For another example, the elastic compression deformation structure may include certain structures with elastic compression deformation properties, such as compression springs, zigzag elastic members, organ leaf elastic members, lantern skeleton-shaped elastic members, and the like. The elastic compression deformation structure may be formed of materials such as, but not limited to, metal, plastic, or ceramic. The embodiments of the present disclosure do not limit this.

For example, in the embodiment shown in FIG. 8 , the sleeve 2 includes a holding structure 24 protruding from the inner wall of the sleeve 2 toward the inside, and the first elastic member 71 is located on the side of the holding structure 24 close to the end effector 1 to It is configured to be compressed as the closing mechanism moves toward the end effector 1 , so as to make full use of the limited space inside the sleeve 2 to realize the compression and limiting of the first elastic member 71 .

For example, in other embodiments, the first elastic member 71 is located on a side of the holding structure 24 close to the end effector 1 to be configured to be stretched as the closing mechanism moves toward the end effector 1 . In this way, it is also possible to achieve The same or similar technical effect as Figure 8.

FIG. 9 is a schematic diagram of the main body part 4 including the first driving mechanism 10 of a stapler 100 according to an embodiment of the present disclosure. As shown in FIG. 9 , the stapler 100 further includes an electric driving mechanism, and the electric driving mechanism is located in the main body part. 4. The main body part 4 includes, for example, a handle 9 and a drive part 99 connected to the handle 9; for example, the electric drive mechanism is located in the handle 9 or/and the drive part 99, the first end of the first drive mechanism 10 is connected to the electric drive mechanism, and the electric drive The mechanism drives the first drive mechanism 10 to move in the axial direction. For example, the electric drive mechanism includes a motor and a turbine linkage mechanism that moves under the drive of the motor, which can be designed by those skilled in the art according to conventional techniques, and the structure of the electric drive mechanism is not limited in the present disclosure.

For example, the stapler 100 also includes a cutting device. The staple cartridge assembly 11 and the staple anvil 12 are combined to clamp the target tissue; after the staple pusher assembly pushes out the staples from the staple cartridge assembly 11, the staples enter the target tissue to sew the target tissue; the first driving mechanism 10 is further configured as The cutting device is driven to cut the target tissue. That is, the first driving mechanism 10 is also configured to drive the cutting device to cut the target tissue, which further simplifies the driving structure, saves space, and reduces the volume of the stapler 100, so that it is easy to enter the surgical object, such as the human body, during the operation, reducing the need for In addition, the simplification of the driving structure makes the operation process of the stapler 100 easier and smoother, which has a prominent contribution to improving the reliability of operation, and also reduces the design of the control system for controlling the operation process of the stapler 100. difficulty. For example, the target tissue is sutured after the entire target tissue is sutured. Of course, the target tissue can also be cut while being sewn, that is, for each part of the target tissue, the part is sutured first, and then the part is cut. The specific stitching and cutting methods will be introduced below.

For example, the stapler 100 further includes a cutting drive mechanism configured to drive the cutting device under the driving of the first drive mechanism 10 to cut the target tissue. For example, the nail pushing driving mechanism 40 is reused as a cutting driving mechanism to simplify the structure and save space. The second drive mechanism 20 is also configured to be connected with the cutting drive mechanism during the cutting stage to drive the cutting drive mechanism to move, that is, in the case where the nail push drive mechanism 40 doubles as the cutting drive mechanism, the second drive mechanism 20 is also configured to drive the cutting drive mechanism during cutting. The stage is connected with the push nail drive mechanism 40 to drive the push nail drive mechanism 40 to move.

For example, the cutting device includes a knife-carrying member and a cutting knife 605 , the cutting knife 605 is movably connected with the knife-carrying member, and the cutting driving mechanism is configured to drive the knife-carrying member to move so as to move the cutting knife 605 . For example, the nail-pushing slider 60 is reused as a knife-carrying part, so as to further simplify the structure, save space, and facilitate the driving and control of the nail-pushing stage and the cutting stage.

The following describes the staple pushing stage and the cutting stage of the stapler 100 by taking the case where the staple pushing driving mechanism 40 is reused as the cutting driving mechanism as an example.

In the closing stage in which the first driving mechanism 10 drives the closing mechanism to close the end effector 1 and the staple pushing stage in which the staple pushing assembly is driven to push out the staples from the staple cartridge assembly 11, the first driving mechanism 10 moves toward the end effector 1; For example, during the cutting phase, the first drive mechanism 10 is moved away from the end effector 1 to drive the cutting drive mechanism to move away from the end effector 1 .

FIG. 10A is a structural relationship diagram of the staple cartridge assembly 11 and the cutting drive mechanism. Referring to FIGS. 10A and 2 , the end effector 1 includes a first end and a second end axially opposite to each other, the first end being adjacent to the closure mechanism, ie, the sleeve 2 . Before the nail pushing stage, the cutting device is located at the first end; in the nail pushing stage, the first drive mechanism 10 moves axially toward the end effector 1 to drive the cutting drive mechanism to move toward the end effector 1 in synchronization with the push nail slider 60 , the cutting drive mechanism drives the cutting device to move from the first end to the second end, but in the nail pushing stage, the cutting blade 605 is at least partially located in the nail pushing slider 60, and the cutting blade 605 is clamped between the staple cartridge assembly 11 and the nail anvil. The target tissue between 12 has a preset distance so that the cutting blade 605 does not contact the target tissue. During the cutting phase, the first drive mechanism 10 is moved axially away from the end effector 1 to drive the cutting drive mechanism to move away from the end effector 1 , and the cutting drive mechanism drives the cutting device to move from the second end to the first end and to the target tissue. cut.

10B is a top view of the stapler 100 shown in FIG. 10A in the direction of the staple anvil; FIG. 10C is a top view of the stapler 100 shown in FIG. 10A in the direction of the staple cartridge; FIG. 10D is a schematic cross-sectional view along the J-J line in FIG. 10C ; 10E is a schematic cross-sectional view along the line H-H in FIG. 10B ; FIGS. 12D-12E are schematic structural diagrams of the cutting drive mechanism; FIG. 13C is the nail pushing slider 60 carrying the cutting knife 605 moving from the first end of the end effector 1 to the end Schematic diagram of the second end of the actuator 1. 10B-10E, and FIG. 13C, staple cartridge assembly 11 includes staple cartridge 500 and outer bracket 400. The staple cartridge 500 contains staples; the outer bracket 400 is fixed on the staple cartridge 500 and has a first part and a second part opposite to each other; the first part and the second part are located on the side of the staple cartridge away from the staple anvil 12 and both are along the axis Extending upward, the first portion 401 of the outer bracket 400 and the second portion 402 of the outer bracket 400 are spaced apart from each other to define an axially extending first chute 41, the first portion 401 of the outer bracket 400 and the second portion 402 of the outer bracket 400 respectively have remote The upper surface of the bin 500 and the lower surface opposite the upper surface. The nail push driving mechanism 40 includes a main body portion 411 and a first sliding portion 412 . During the movement of the nail pushing slider 60 driven by the nail pushing driving mechanism 40 , the main body portion 411 is configured to be connected with the knife-carrying member, and the first end of the main body portion 411 away from the nail anvil 12 slides in the first chute 41 . The first sliding part 412 is connected with the main body part 411 , is supported on the upper surface of the first part of the outer bracket 400 and the upper surface of the second part of the outer bracket 400 , and is configured to be able to follow the upper surface of the first part of the outer bracket 400 and slide with the upper surface of the second part of the outer bracket 400 . In this way, the nail-pushing driving mechanism 40 is arranged on the staple cartridge, and the outer bracket 400 can ensure that the nail-pushing driving mechanism 40 moves stably in the nail-pushing stage, so that in the nail-pushing stage, the nail-pushing driving mechanism 40 can not be affected by the anvil 12 . The force can make the push driving mechanism 40, that is, the cutting driving mechanism, and the target tissue sandwiched between the staple cartridge and the anvil 12 to have a preset distance so that the cutting blade 605 does not contact the target tissue.

For example, as shown in FIG. 13C, the staple cartridge includes a staple cartridge holder, the staple cartridge holder includes a first portion 511 and a second portion 512 extending in the axial direction, and both the first portion of the staple cartridge holder and the second portion of the staple cartridge holder include a In the nail groove for accommodating staples and defining a second sliding groove 42 extending in the axial direction, the second sliding groove 42 is opposite to the first sliding groove 41. During the process of driving the nail pushing slider 60 to move by the nail pushing driving mechanism 40, The second end of the main body portion 411 of the push nail driving mechanism 40 that is close to the nail anvil 12 slides in the second sliding groove 42 .

For example, the staple cartridge has a staple ejection surface opposite to the staple anvil 12 , and the cross-sectional shape of the entire body 411 and the first sliding portion 412 of the staple push driving mechanism 40 in the direction perpendicular to the staple ejection surface is T-shaped. In this way, different from the "I"-shaped nail pushing driving mechanism 40 (cutting driving mechanism), the T-shaped nail pushing driving mechanism 40 is arranged on the nail magazine, and the T-shaped nail pushing driving machine is close to one end of the nail anvil 12, That is, one end close to the target tissue can be separated from the target tissue by a preset distance during the pushing stage so that the cutting knife 605 does not contact the target tissue, so that the target tissue can be cut after the entire target tissue is sutured. It is beneficial to the smoothness and accuracy of target tissue suture and the accuracy of cutting.

For example, the push nail driving mechanism 40 further includes a second sliding part 413, the second sliding part 413 is connected with the main body part 411, is located on the side of the first part and the second part away from the first sliding part 412, and is connected with the lower part of the first part. The surface is in contact with the lower surface of the second portion and is configured to slide along the lower surface of the first portion and the lower surface of the second portion.

FIG. 13A is a schematic diagram of the nail pushing process. As shown in FIGS. 12A and 13A , the push pieces 700 are arranged in the axial direction and are configured to apply pressure to the staples to push the staples out of the staple cartridge; the push block 60 is configured to apply pressure to the push pieces 700 to The nail pushing piece 700 is driven to apply nail pushing pressure to the staples; the nail pushing driving mechanism 40 is configured to drive the nail pushing slider 60 to move in the axial direction under the driving of the first driving mechanism 10 in the nail pushing stage, so as to push the nail sliding block 60 It is in contact with the nail pushing piece 700 in the axial direction to apply a nail pushing pressure to the nail pushing piece 700 .

As shown in FIG. 12A , for example, the nail pushing slider 60 includes a main body portion and a nail pushing chute 601 . The nail pushing chute 601 is located on the main body portion of the nail pushing slider 60 and is located on the side of the main body portion of the nail pushing slider 60 that faces the nail anvil 12 , and is configured for the nail pushing stage when the nail pushing slider 60 moves in the axial direction. The pusher piece 700 is accommodated and includes a bottom surface facing the anvil 12 , wherein the bottom surface is configured to apply a pusher pressure to the pusher piece 700 during the pusher stage.

As shown in FIG. 12A , for example, the nail pushing slider 60 includes a receiving cavity 600 , and the cutting knife 605 is at least partially located in the receiving cavity 600 . The nail pushing slider 60 includes a first nail pushing chute 601 and a second nail pushing chute 601. The staples pushed out by the first nail pushing chute 601 enter into the nail grooves of the first part of the cartridge holder, and the second nail pushing The staples pushed out by the sliding groove 601 enter into the staple groove of the second part of the staple cartridge bracket; the accommodating cavity 600 is located between the first pushing nail sliding groove 601 and the second nail pushing sliding groove 601 , so that the wall of the accommodating cavity 600 It can be used to form the nail pushing chute 601 at the same time, making full use of the limited space of the nail pushing slider 60 , so that it has the functions of carrying the cutting knife 605 and having multiple nail pushing chute 601 at the same time.

12A is a schematic diagram of the overall structure of the nail pushing slider 60 carrying the cutting blade 605 ; FIG. 12B is a cross-sectional schematic diagram of the nail pushing slider 60 carrying the cutting blade 605 . As shown in FIGS. 12A-12B , for example, the nail pushing slider 60 , that is, the knife-carrying component includes a accommodating cavity 600 , a limiting structure and a knife-exiting driving structure 602 . The cutting knife 605 is at least partially located in the accommodating cavity 600 and includes a cutting edge 6050; the limiting structure is configured to movably connect the cutting knife 605 to the nail pushing slider 60; A plurality of wall surfaces 621/622, and a plurality of wall surfaces 621/622 constitute a limiting structure; in the nail pushing stage, the plurality of walls hold the cutting knife 605 in a fixed position; the static friction force exerted by the plurality of walls on the cutting knife 605 is related to the Gravity is balanced to achieve fixing the cutting knife 605 .

For example, the plurality of wall surfaces include a first wall surface 621 and a second wall surface 622 opposite to each other, the first wall surface 621 and the second wall surface 622 intersect the opening and both intersect the axial direction; under the action of the first driving force, the cutting blade 605 It slides along the first wall surface 621 and the second wall surface 622 to be exposed from the opening. The blade drive structure 602 is configured to apply a first driving force to the cutting blade 605 to move the blade 6050 toward the target tissue for contact with the target tissue. The receiving cavity 600 includes an opening toward the target tissue, and the cutting blade 605 is configured to be at least partially exposed from the opening under the action of the first driving force so that the blade edge 6050 is in contact with the target tissue.

For example, the first wall surface and the second wall surface are perpendicular to the axial direction, so as to facilitate the subsequent sliding of the cutting blade 605 toward the target tissue along the first wall surface and the second wall surface.

FIGS. 11A-11B are schematic diagrams illustrating the connection of the nail pushing driving mechanism 40 and the nail pushing slider 60 , which are not connected to each other. As shown in FIGS. 11A-11B , for example, before the nail pushing, the nail pushing driving mechanism 40 is connected with the second driving mechanism 20 , and as the second driving mechanism 20 moves, it moves to contact with the nail pushing slider 60 , And connected with the push nail slider 60 . FIG. 12C is a schematic view of the end of the nail pushing slider 60 close to the cutting drive mechanism; FIG. 12E is a schematic view of the connection of the cutting drive mechanism and the nail pushing slider 60 connected to each other. 12C-12E, the nail pushing slider 60, that is, the knife-carrying member further includes a first connection structure, and the main body of the nail push driving mechanism 40 includes a second connection structure. In the nail pushing stage, the first connecting structure is not connected with the second connecting structure; after the nail pushing stage and before the cutting stage, the first connecting structure is connected with the second connecting structure. For example, the main body portion of the nail pushing driving mechanism 40 further includes a force applying surface 641 facing the knife-carrying member, and the nail pushing slider 60 includes a force receiving surface 642 facing the main body portion. In the nail pushing stage, the cutting drive mechanism moves toward the knife-carrying member to make the force-applying surface contact the force-receiving surface, and the nail-pushing driving mechanism 40 applies a second driving force to the force-receiving surface through the force-applying surface to drive the knife-carrying member to move.

For example, in the present embodiment, the first connection structure reuses the knife drive structure 602, the knife drive structure 602 is at least partially located in the accommodating cavity 600 and is configured to move in the axial direction; the knife drive structure 602 extends in the axial direction , including a first end close to the cutting drive mechanism in the axial direction and a second end opposite to the first end; the nail pushing slider 60 includes a through hole 415 that penetrates the force-bearing surface 414 and communicates with the accommodating cavity 600; At this stage, the first end of the knife-delivery driving structure 602 is located in the accommodating cavity 600 , the second end of the knife-delivering driving structure 602 extends outside the accommodating cavity 600 , and the knife-delivering driving structure 602 does not move relative to the cutting knife 605 in the axial direction. FIG. 13B is a schematic diagram of the cutting blade not in contact with the target tissue in the nail pushing stage; FIG. 13D is a schematic diagram of the cutting blade moving to contact the target tissue in the nail pushing stage. 12C-12E and FIGS. 13C and 13D, for example, the staple cartridge holder includes a resistance surface 503, the resistance surface 503 faces the knife drive structure 602, and the knife drive structure 602 is configured to reach when the cutting device is driven by the cutting drive mechanism. When the second end of the end effector 1 hits the resistance surface 503, the resistance surface 503 exerts a knife driving force on the knife driving structure 602, and the knife driving structure 602 is configured to be in contact with the cutting knife 605 under the action of the knife driving force A first driving force is applied to the cutting blade 605 to drive the cutting blade 605 to move toward the target tissue. For example, as shown in FIG. 13B , when the cutting device reaches the second end of the end effector 1 , the second end of the knife driving structure 602 hits the resistance surface 503 , so that the resistance surface 503 applies the knife driving force to the knife driving structure 602 , under the action of the driving force of the knife, the driving structure 602 moves away from the second end of the end effector 1 in the axial direction to contact the cutting knife 605 so as to apply a first driving force to the cutting knife 605 to drive the cutting knife 605 towards the target The tissue moves, and the first end of the knife driving structure 602 moves to the outside of the receiving cavity 600 through the through hole 603 to connect with the second connecting structure, that is, the state shown in FIG. 13B changes to the state shown in FIG. 13D .

In the nail pushing stage, the cutting edge 6050 of the cutting knife 605 faces the target tissue, the cutting knife 605 further includes a first inclined surface 606 intersecting with the cutting edge 6050 , and the driving structure 602 includes a second inclined surface 607 , and the second inclined surface 607 is located on the first inclined surface 606 The side away from the cutting edge 6050 is located on the side of the first inclined surface 606 close to the second end of the end effector 1 in the axial direction, and is parallel to the first inclined surface 606, and both the first inclined surface 606 and the second inclined surface 607 are parallel to the shaft When the second end of the knife ejection drive structure 602 hits the resistance surface 503, the knife ejection drive structure 602 is configured to move away from the second end of the end effector 1 in the axial direction under the action of the knife ejection driving force to make the first The two inclined surfaces 607 are in contact with the first inclined surface 606 of the cutting blade 605 to apply a first driving force to the cutting blade 605 . When the driving structure 602 moves away from the second end of the end effector 1 in the axial direction, the cutting blade 605 moves toward the cutting blade 605 . The target tissue moves and the first ramp 606 slides relative to the second ramp 607 toward the target tissue. In this way, it can be ensured that the knife ejection driving structure 602 is smoothly connected with the second connecting structure, and the operation stability is ensured, and the limited space of the accommodating cavity 600 is fully utilized, which saves the space, and is conducive to realizing the miniaturization of the stapler 100 to minimize the The radial size of the stapler 100 is reduced, and it is easy to enter the surgical object, such as the human body, during the operation, thereby reducing the injury of the surgical object.

For example, the included angle between the second inclined surface 607 and the axial second end close to the end effector 1 is an obtuse angle, so as to facilitate the sliding of the first inclined surface 606 along the second inclined surface 607 .

As shown in FIGS. 12D-12E , the main body of the cutting drive mechanism includes a hollow area, and the hollow area penetrates the force applying surface so that the force applying surface has a through hole, the second connecting structure is located in the hollow area, and the second connecting structure of the knife driving structure 602 is located in the hollow area. The end passes through the via hole and enters the hollow area to be connected with the second connection structure.

12C-12E, for example, the second connecting structure includes an elastic connecting piece, and the elastic connecting piece protrudes from the inner wall of the hollow area facing the second end of the knife ejection drive structure 602; the second end of the knife ejection drive structure 602 has an embedded Sleeve 604. The elastic connecting piece includes an elastic connecting rod 610 and an end protrusion 611 ; the elastic connecting rod 610 protrudes from the inner wall of the hollow area facing the second end of the knife driving structure 602 and extends in the axial direction; the end protrusion 611 is located on the elastic connecting rod One end of 610 away from the inner wall and along the second direction perpendicular to the axial direction protrudes from the elastic connecting rod 610; the end protrusion 611 is nested in the nesting hole 604 so that the second end of the knife driving structure 602 is connected to the elastic connecting piece connect.

As shown in FIG. 12E , for example, the end surface of the end protrusion 611 protruding from the elastic connecting rod 610 is an arc-shaped surface 612 , and the knife driving structure 602 and the elastic connecting piece are configured to drive the knife under the action of the knife driving force. When the structure 602 moves away from the second end of the end effector 1 in the axial direction and reaches the end protrusion 611, the second end of the knife driving structure 602 abuts against the arc surface to make the elastic connecting rod 610 elastic in the second direction Deformation, under the action of the driving force of the knife, the knife-exit driving structure 602 continues to move away from the second end of the end effector 1 in the axial direction so that the nesting hole 604 is opposite to the end protrusion 611, the elasticity of the elastic connecting rod 610 Under the action of the restoring force, the end protrusion 611 moves toward the nesting hole 604 in the second direction and is inserted into the nesting hole 604, so that the nail pushing driving mechanism 40 (ie the cutting drive mechanism) and the nail pushing slider 60 (ie the knife-carrying member) connect. This design can make full use of the part of the knife driving structure 602 , which can be used to drive the cutting knife 605 to be exposed to cut the target tissue, and at the same time, it can also be quickly connected to the push nail driving mechanism 40 for the next cutting stage. The cutting blade 605 is driven to move to prepare for cutting, and the structure is simple, easy to implement, and saves space.

For example, the arc surface is a spherical cap surface, and the nesting hole 604 is substantially circular, so that the end protrusion 611 can more easily enter the nesting hole 604 to realize the connection between the second end of the knife driving structure 602 and the elastic connecting piece , to increase the reliability of the equipment.

Of course, in other embodiments, the second end of the knife ejection drive structure 602 can also be connected by other hooking forms, or by clamping, by magnetic connection, etc. The embodiment of the present disclosure does not limit the specific connection method, as long as it can The above effect can be achieved.

For example, in the stapler 100 provided in at least one other embodiment, the staple pushing slider, that is, the knife-carrying member, includes a first connection structure, and the main body of the cutting drive mechanism includes a second connection structure; at least in the staple pushing stage and the cutting stage, The first connecting structure is connected with the second connecting structure so that the nail pushing driving mechanism, that is, the cutting driving mechanism, is connected with the nail pushing slider. That is, the nail-pushing driving mechanism is connected with the nail-pushing slider during the nail-pushing stage. Also, for example, the first connection structure includes a first connection end adjacent to the cutting drive mechanism, and the second connection structure includes a second connection end adjacent to the first connection structure. Before the nail pushing stage, the nail pushing driving mechanism (ie the cutting driving mechanism) is not connected with the knife-carrying part; in the nail pushing stage, driven by the first driving mechanism and the second driving mechanism, the nail pushing driving mechanism slides toward the nail pushing The block (ie, the knife-carrying member) moves to connect the first connection end with the second connection end. For example, the main body of the nail-pushing driving mechanism further includes a force-applying surface facing the knife-carrying member, and the knife-carrying member includes a force-bearing surface facing the main body portion; in the nail-pushing stage, the cutting driving mechanism moves toward the knife-carrying member to make the force-applying surface In contact with the force-bearing surface, and the first connection end is connected with the second connection end, the cutting driving mechanism applies a second driving force to the force-bearing surface through the force-applying surface, and applies a third driving force to the first connection structure through the second connection structure. The driving force is used to drive the knife-carrying member to move. In this embodiment, the positions of the end protrusions 611 may be interchanged with the positions of the nesting holes. For example, the main body of the cutting drive mechanism includes a hollow area, the hollow area penetrates the force-applying surface so that the force-applying surface has a through hole, the second connection structure is located in the hollow area, and the first connection end passes through the through hole into the hollow area and is connected to the hollow area. The second connection end of the second connection structure is connected. For example, the second connecting structure includes an elastic connecting piece, which protrudes from the inner wall of the hollow area facing the first connecting end; the end of the elastic connecting piece away from the inner wall is the second connecting end, and the second connecting end has a nesting hole. The elastic connecting piece includes: an elastic connecting rod 610 and an end protrusion 611 ; the elastic connecting rod 610 protrudes from the inner wall of the hollow area facing the first connecting end and extends in the axial direction; the end protrusion 611 is located away from the elastic connecting rod 610 One end of the inner wall protrudes from the elastic connecting rod 610 along the second direction perpendicular to the axial direction; the end protrusion 611 is nested in the nesting hole to connect the second end of the knife driving structure with the elastic connecting piece. For example, the end surface of the end protrusion 611 protruding from the elastic connecting rod 610 is an arc-shaped surface, and the cutting driving mechanism and the elastic connecting member are configured such that the cutting driving mechanism is driven by the first driving mechanism in the axial direction toward the first driving mechanism of the end effector. When the two ends move to reach the first connecting end, the first connecting end abuts against the arc-shaped surface so that the elastic connecting rod 610 is elastically deformed in the second direction, and the cutting drive mechanism continues along the axial direction under the driving of the first driving structure When moving toward the second end of the end effector so that the nesting hole is opposite to the end protrusion 611 , the end protrusion 611 moves toward the nesting hole in the second direction under the action of the elastic restoring force of the elastic connecting rod 610 and is inserted into the nesting hole. hole to connect the first connection end and the second connection end. The second connection structure includes an elastic connection piece, the elastic connection piece protrudes from the inner wall of the hollow area facing the second end of the knife ejection drive structure and extends in the axial direction; the end of the elastic connection piece away from the inner wall is the second connection end, The second connection end has nested holes. The second end of the knife driving structure has an end protrusion 611, and the end protrusion 611 protrudes from the second end of the knife driving structure along the second direction perpendicular to the axial direction; the end protrusion 611 is nested in the nesting hole to The second end of the knife driving structure is connected with the elastic connecting piece. The end surface of the end protrusion 611 protruding from the second end of the knife-out driving structure is an arc-shaped surface, and the knife-out driving structure and the elastic connecting piece are configured such that the knife-out driving structure is axially away from the end under the action of the knife-out driving force When the second end of the actuator moves so that the elastic connecting piece reaches the end protrusion 611, the elastic connecting piece abuts against the arc-shaped surface so that the elastic connecting piece is elastically deformed in the second direction, and is ejected under the action of the driving force of the knife. When the knife driving structure continues to move away from the second end of the end effector in the axial direction so that the nesting hole is opposite to the end protrusion 611 , the elastic connecting piece moves toward the nesting in the second direction under the action of the elastic restoring force of the elastic connecting rod 610 . The sleeve hole moves so that the end protrusions 611 fit into the nested holes to connect the cutting drive mechanism with the knife carrier. For example, the arcuate surface is a spherical cap surface, and the nesting hole is substantially circular. This embodiment can achieve similar technical effects as the embodiment shown in FIGS. 12C-12E .

In at least one embodiment of the present disclosure, in the initial state, the end effector 1 is in an open state; in the closing stage, the closing mechanism is configured to drive the staple cartridge assembly 11 and the staple anvil 12 to close together to close the end effector 1 to clamp The target tissue is held; during the staple push phase following the closure phase, the staple push assembly is configured to push the staples out of the cartridge assembly 11 to staple the target tissue. For example, the stapler 100 further includes a locking mechanism 5 that is configured to confine the closure mechanism to a first position during the staple push phase to hold the closure mechanism in the closed state of the end effector 1, and is configured to, in an initial state, lock the closure mechanism into a closed state. The closing mechanism is defined in the second position to keep the end effector 1 in an open state to achieve the technical effect of two-way locking, preventing tissue slippage due to the movement of the closing mechanism after the end effector 1 is closed; and, in the initial state The end effector 1 is prevented from closing due to the movement of the closing mechanism, thereby improving the working stability and reliability of the closing mechanism.

Exemplarily, FIGS. 6A-6C show the structure of the locking mechanism 5 provided by an embodiment of the present disclosure, and the working process of the locking mechanism 5 when the closing mechanism closes the end effector 1 . 1 and 6A-6C, the locking mechanism 5 includes a first limiting structure and a second limiting structure. The first limiting structure is configured to limit the closing mechanism to the first position in the nail pushing stage; the second limiting structure is configured to limit the closing mechanism to the second position in the initial state. The first limiting structure and the second limiting structure can be in any form as long as the above-mentioned purpose can be achieved, and are not limited to the situations described in the foregoing embodiments, which are not limited in the present disclosure.

For example, as shown in FIG. 8 , the stapler 100 further includes a first elastic member 71 which is connected with the closing mechanism. In the closing stage, the closing mechanism moves toward the end effector 1 to close the end effector 1 and elastically deform the first elastic member 71; in the nail pushing stage, the elastically deformed first elastic member 71 is at the limit of its elastic restoring force. Under the action, a first resistance that prevents the closing mechanism from moving toward the end effector 1 is applied to the closing mechanism, and the first limiting structure is configured to apply a second resistance opposite to the direction of the first resistance to the closing mechanism, and the first resistance and the second resistance are balanced to limit the closing mechanism to the first position; in the initial stage, when the closing mechanism is subjected to a driving force that drives it away from the second position, the second limiting structure is configured to apply a third resistance force to the closing mechanism to balance the driving force so as to reduce The closing mechanism is defined in the second position.

The first limiting structure includes a first limiting groove 51 and a first locking member. The first limiting groove 51 has a first side wall, is located on the closing mechanism and is configured to move with the movement of the closing mechanism; in the nail pushing stage, at least part of the first end portion 501 of the first locking member is limited to the first limit. The first limit groove 51 is in contact with the first side wall to apply a fourth resistance to the first side wall, so as to exert a second resistance to the closing mechanism through the first limit groove 51. The fourth resistance and the second resistance are equal in magnitude and in the same direction . The second limiting structure includes a second limiting groove 52 and a second locking member. The second limiting slot 52 has a second side wall, is located on the closing mechanism and is configured to move with the movement of the closing mechanism. In the initial stage, at least a portion of the first end 501 of the second locking member is confined in the second limiting groove 52 and is configured to be in contact with the second side wall to apply a fifth resistance force to the second side wall to pass the first The two limiting grooves 52 exert a third resistance force on the closing mechanism, and the fifth resistance force and the third resistance force are equal in magnitude and in the same direction as the first resistance force. For example, in this embodiment, the closing mechanism is a hollow sleeve 2 , and the first limiting groove 51 and the second limiting groove 52 penetrate through the cylindrical wall of the sleeve 2 . In this way, the locking mechanism 5 will not protrude from the sleeve 2, the sleeve 2 and the inner space of the sleeve 2 are used to achieve bidirectional locking of the sleeve 2, the limited space inside the sleeve 2 is fully utilized, and the operation is prevented. It is easy to enter the surgical object such as the human body, and the contusion of the surgical object is reduced.

As shown in FIGS. 6A-6C , for example, in some embodiments, the first locking member and the second locking member are the same common locking member 50 . In the closing stage, the first limiting slot 51 and the second limiting slot 52 move relative to the common locking member 50 so that the common locking member 50 is configured to move from the second limiting slot 52 to the first limiting slot 51; when the common locking member 50 is configured to move from the second limiting slot 52 to the first limiting slot 51 When the first end portion 501 of the locking member 50 is at least partially confined in the first limiting groove 51, the common locking member 50 and the first limiting groove 51 constitute the first locking member; when the first end portion of the common locking member 50 is When 501 is at least partially confined in the second limiting groove 52, the common locking member 50 and the second limiting groove 52 constitute a second locking member. The common locking member 50 simplifies the structure of the locking mechanism 5 , saves space, and facilitates miniaturization of the stapler 100 .

For example, the movement direction of the sleeve 2 , the first limiting groove 51 and the second limiting groove 52 is the axial direction. In the axial direction, the first limiting groove 51 is located at a distance of the second limiting groove 52 away from the end effector 1 . one side, so as to realize the above-mentioned function of the first limiting groove 51 .

As shown in FIGS. 6A-6C , the locking mechanism 5 further includes a channel groove 53 , and the channel groove 53 is located between the first limit groove 51 and the second limit groove 52 and is connected with the first limit groove 51 and the second limit groove 52 connected. In the closing stage, the common locking member 50 is configured to move from the second limiting groove 52 to the first limiting groove 51 via the passage groove 53 . The channel groove 53 penetrates the cylindrical wall of the sleeve 2 .

For example, the common locking member 50 also includes a second end 502 opposite the first end 501, and a neck 503 connecting the first end 501 and the second end 502; the passage slot 53 is configured to allow passage of the neck 503 The first end portion 501 is not allowed to pass through, so that in the initial stage, the first end portion 501 cannot pass through the passage groove 53 and is at least partially confined in the second limiting groove 52, and in the nail pushing stage, the first end portion 501 It cannot pass through the channel groove 53 and is at least partially confined in the first limiting groove 51 . The direction from the first end portion 501 to the second end portion 502 is the longitudinal direction, the longitudinal direction is perpendicular to the axial direction, and the direction perpendicular to the axial direction and the longitudinal direction is the transverse direction. For example, the width of the channel groove 53 in the lateral direction is smaller than the width of the first limiting groove 51 in the lateral direction and smaller than the width of the second limiting groove 52 in the lateral direction; the width of the first end portion 501 in the lateral direction greater than the width of the neck 503 in the transverse direction and greater than the width of the channel groove 53 in the transverse direction, so that the channel groove 53 allows the passage of the neck 503 but not the first end 501 so that in the initial stage, the first end The portion 501 cannot pass through the passage groove 53 and is at least partially confined in the second limiting groove 52 , and in the push nail stage, the first end portion 501 cannot pass through the passage groove 53 and is at least partially confined within the first limiting groove 51 .

For example, in at least one embodiment of the present disclosure, the locking mechanism further includes a locking drive structure. During the closing phase, the locking drive structure is configured to drive the common locking member to move longitudinally away from the second end portion to move the first end portion out of the second limit slot, with the first limit slot and the second limit slot For movement of the limiting slot, the neck is configured to move from the second limiting slot to the first limiting slot through the passage slot; after the end closure is closed, the locking drive structure is configured to drive the common locking member longitudinally toward the second end The direction of the first end is moved in the direction of the first end so that at least part of the first end is moved into the first limiting groove to be confined in the first limiting groove, and at least part of the first end is in contact with the first side wall to give the first side The wall exerts a fourth resistance.

As shown in FIGS. 6A-6C , for example, the stapler 100 includes a fixing bracket 8 , the sleeve 2 is sleeved on the outside of the fixing bracket 8 , and the first limiting slot 51 , the second limiting slot 52 and the channel slot 53 expose the fixing bracket 8 the outer surface. The fixing bracket 8 includes a through hole penetrating the outer surface. When at least part of the first end portion 501 of the common locking mechanism 5 is confined in the first limiting groove 51 or in the second limiting groove 52, the neck portion 503 At least part of and the second end 502 are located in the through hole. For example, the first end portion 501 includes a lower surface facing the fixing bracket 8 , when at least part of the first end portion 501 of the common locking mechanism 5 is confined in the first limiting groove 51 or within the second limiting groove 52 When inside, the outer surface of the fixing bracket 8 is in direct contact with the lower surface of the first end portion 501 to support the first end portion 501 . The common locking member 50 and the through hole constitute a latch structure.

For example, the length of at least part of the first end portion 501 in the axial direction is smaller than the length of the first limiting groove 51 in the axial direction to leave a certain margin so that the first limiting groove 51 allows the first end portion 501 At least part of the first limiting groove 51 moves within a range allowed by the margin to adjust the position, so as to play a buffering role when the tissue is clamped in the closing stage.

For example, the first side wall has a first arc shape, and at least a part of the side surface of the first end portion 501 in contact with the first side wall has a second arc shape, and the curvatures of the first and second arc shapes are the same, which improves locking Stability and reliability of components.

For example, the planar shape of the channel groove 53 is a straight bar shape to ensure that the common locking member 50 can smoothly pass through the channel groove 53 and move between the first limiting groove 51 and the second limiting groove 52 .

Illustratively, as shown in FIGS. 6A-6C , for example, the locking drive structure includes a bearing surface facing the common locking member 50 ; the bearing surface includes a first surface 01 , a first slope surface 02 , and a protruding surface 03 arranged in sequence along the axial direction. , the second slope 04 and the second surface 05, the first slope 02 connects the first surface 01 and the protruding surface, the second slope 04 connects the protruding surface and the second surface 05, between the first slope 02 and the protruding surface There is a first included angle, and there is a second included angle between the second slope surface 04 and the protruding surface; in the longitudinal direction, the distance from the protruding surface to the second limiting groove 52 is smaller than the distance between the first surface 01 and the second limiting groove 52 The distance is smaller than the distance from the second surface 05 to the second limit groove 52, and the distance from the protruding surface to the channel groove 53 is smaller than the distance from the first surface 01 to the channel groove 53 and smaller than the distance from the second surface 05 to the channel groove 53. The distance from the surface to the first limit groove 51 is smaller than the distance from the first surface 01 to the first limit groove 51 and smaller than the distance from the second surface 05 to the first limit groove 51 . 6A, in the initial stage, the second end 502 is located on the side of the first ramp 02 away from the second ramp 04; FIG. 6B, in the closing stage, the locking drive structure is configured to axially lock relative to the common lock The member 50 moves to move the second end 502 along the first ramp 02 to the protruding surface to drive the common locking member 50 to move longitudinally away from the second end 502, which in turn moves the second end 502 along the protruding surface and the second ramp 04 to the side of the second ramp 04 away from the first ramp 02 , as shown in FIG. 6C , to move the common locking member 50 longitudinally toward the second end 502 . During the closing phase, the movement of the locking drive structure relative to the common locking member 50 is synchronized with the movement of the first limiting groove 51 and the second limiting groove 52 relative to the common locking member 50, so that the locking relative to the locking member 50 at the second end 502 is synchronized. During the movement of the driving structure, the neck 503 moves from the second limiting groove 52 to the first limiting groove 51 through the passage groove 53, as shown in FIG. 6C; at this time, at least part of the first end 501 is connected to the first side The first portion of the wall near the channel slot 53 contacts to apply a fourth resistance force to the first portion 511 of the first side wall, which faces away from the end effector 1 .

For example, in the embodiment shown in FIGS. 6A-6C , the fixed bracket 8 and the common locking member 50 do not move in the axial direction, and the locking driving structure moves in the axial direction to ensure the stability of the fixed bracket 8 and the common locking member 50 .

The first drive mechanism 10 of the stapler 100 is connected to the second drive mechanism 20 and configured to drive the second drive mechanism to move; in the closing phase, the second drive mechanism 20 is detachably connected to the closing mechanism and configured to drive the first drive mechanism The actuation of 10 moves toward the end effector 1 so that the closing mechanism contacts the staple cartridge assembly 11 and the staple anvil 12 and applies pressure to the staple cartridge assembly 11 and the staple anvil 12 to close the end effector 1 . For example, a locking drive structure is provided on the second drive mechanism 20 . For example, in the embodiment shown in FIGS. 6A-6C , a part of the second driving mechanism 20 is reused as the locking driving structure, so as to make full use of the second driving mechanism 20 and simplify the structure of the stapler 100 .

In the staple pushing stage, the second driving mechanism 20 is disengaged from the closing mechanism and continues to move toward the end effector 1 to drive the staple pushing assembly to push the staples out of the staple cartridge assembly 11 . As shown in FIG. 6C, the first surface 01 is located at the end of the second surface 05 close to the end effector 1. During the closing phase, during the movement of the second end 502 relative to the locking drive structure, the first end 501 is removed from the The second limit slot 52 moves to the first limit slot 51 ; the second end 502 moves over the second surface 05 and the second surface 05 is configured not to apply to the second end 502 during the nailing and cutting stages The force that drives the common locking structure to move in the longitudinal direction, that is, there is no structure on the second surface 05 such as a boss that can drive the common locking structure to move upward in the longitudinal direction, so as to maintain the locking of the sleeve 2 in both the nail pushing stage and the cutting stage , to ensure the fixed position of the target tissue, so as to ensure the accuracy of suturing and cutting.

For example, as shown in FIGS. 6A-6C , the locking mechanism 5 further includes a second elastic member 72 configured to be compressed during longitudinal movement of the common locking member 50 in a direction away from the second end 502 , and is restored under the action of its elastic restoring force during the movement of the common locking member 50 in the direction close to the second end 502 in the longitudinal direction, so as to ensure that the common locking member 50 can quickly move longitudinally toward the direction close to the second end 502 The direction moves back to the through hole, so as to ensure the reliability of the locking mechanism 5 in operation.

The properties and materials of the second elastic member 72 may refer to the properties and materials of the first elastic member 71 described above. For example, the second elastic member 72 is a spring, for example, the second elastic member 72 can be sleeved on the neck 503 and be deformed by the force of the fixing bracket 8 , such as being compressed and deformed.

For example, as shown in FIGS. 6A-6C , the second end portion 502 of the common locking member 50 is in the shape of a taper that tapers longitudinally toward the bearing surface, so that when the second end portion 502 slides along the first ramp surface 02 , the contact area between the second end portion 502 and the first slope surface 02 is reduced, so that the second end portion 502 is easier to move to the protruding surface; When the second surface 05 slides, the contact area of the second end portion 502 with the protruding surface, the second slope surface 04 and the second surface 05 is reduced, which is beneficial to the smooth progress of the sliding.

For example, the first slope surface 02 and the second slope surface 04 are planes or curved surfaces, preferably planes, and it is relatively easy to realize the above-mentioned movement, especially the second end 502 can slide along the first slope surface 02 to the protruding surface. Of course, the embodiments of the present disclosure do not limit the shapes of the first slope surface 02 and the second slope surface 04.

For example, for the stapler 100 provided by at least one embodiment of the present disclosure, in the opening phase after the staple pushing phase, the locking mechanism 5 is further configured to remove the restriction on the position of the closing mechanism so that the end effector 1 is opened. For example, de-defining the position of the closure mechanism to open the end effector 1 at any time can be achieved by human control; for example, the opening stage is before suturing, such as before suturing the tissue, requiring the opening of the end effector 1 to adjust The position of the target tissue to be supported; it can also be after suturing and cutting, of course, the end effector 1 can also be opened after finishing the suturing but before cutting, for example, in some special cases, it is necessary to open the end effector before cutting 1 to make adjustments.

In the opening phase after the staple pushing phase, the first limiting structure is configured to eliminate the second resistance, and the closing mechanism moves away from the end effector 1 under the action of the first resistance to move the staple cartridge assembly 11 and the staple anvil 12 away from each other so that the End effector 1 opens. In the opening stage, the common locking member 50 is configured to move from the first limiting groove 51 to the second limiting groove 52 to return to the initial state.

For example, in the embodiment shown in FIGS. 6A-6C , the common locking member 50 is configured to move from the first limiting slot 51 to the second limiting slot 52 via the passage slot 53 during the opening phase. During the opening phase, the locking drive structure is further configured to drive the common locking member 50 to move longitudinally away from the second end portion 502 to move the first end portion 501 out of the first limiting groove 51 . During the movement of the position slot 51 and the second position limit groove 52 , the neck portion 503 is configured to move from the second position limit groove 52 to the first position limit groove 51 through the passage groove 53 .

In the embodiment shown in FIGS. 6A-6C , during the opening phase, the locking drive structure is configured to move axially relative to the common locking member 50 to move the second end 502 along the second ramp 04 to the protruding surface to drive The common locking member 50 moves longitudinally away from the second end portion 502 , thereby causing the second end portion 502 to move along the protruding surface and the first ramp surface 02 in turn to a portion of the first ramp surface 02 away from the second ramp surface 04 . side so that the common locking member 50 moves longitudinally toward the direction close to the second end 502; in the opening phase, the movement of the locking drive structure relative to the common locking member 50 is opposite to the first limit groove 51 and the second limit groove 52 The movement of the common locking member 50 is synchronized so that during the movement of the second end portion 502 relative to the locking driving structure, the neck portion 503 moves from the first limiting groove 51 to the second limiting groove 52 through the passage groove 53 .

For example, as shown in FIG. 8, the first elastic member 71 is located at the end of the locking mechanism 5 close to the end effector 1 and is compressed as the closing mechanism moves toward the end effector 1; or, in other embodiments, the first elastic member 71 is The elastic member 71 is located at the end of the locking mechanism 5 remote from the end effector 1 and is stretched as the closure mechanism moves toward the end effector 1 .

For example, as shown in FIGS. 6A-6C , the first limiting groove 51 , the second limiting groove 52 and the passage groove 53 are arranged opposite to the connecting hole 23 to make more uniform and full use of the space inside the sleeve 2 .

14A is a schematic diagram 1 of a front swing driving assembly of a stapler 100 according to an embodiment of the disclosure; FIG. 14B is a schematic diagram 2 of a front swing driving assembly of a stapler 100 according to an embodiment of the disclosure. 2 and 14A-14B, for example, the stapler 100 provided by at least one embodiment includes an end effector 1, a closing mechanism, a nail pushing assembly, a first driving mechanism 10 and a swinging mechanism. The end effector 1 includes a staple cartridge assembly 11 and a staple anvil 12, in which the staple cartridge assembly 11 is provided with staples; the closing mechanism is configured to drive the staple cartridge assembly 11 and the staple anvil 12 to engage so as to close the end effector 1 to clamp the target tissue; the staple push assembly is configured to push the staples out of the cartridge assembly 11; the first drive mechanism 10 is configured to: in the closing stage, the first drive mechanism 10 is removably connected to the closing mechanism to drive the closing mechanism to push the end effector 1. Closing; in the staple pushing phase following the closing phase, the first driving mechanism 10 is disengaged from the closing mechanism and drives the staple pushing assembly to push the staples out of the staple cartridge assembly 11 to staple the target tissue. The swing mechanism includes a front swing drive assembly and a rear swing drive assembly. The front swing drive assembly and the rear swing drive assembly are configured to drive the end effector 1 to swing. As shown in FIG. 1A, the stapler 100 includes a main body part 4 and a detachable part 3, and the detachable part 3 is detachably connected with the main body part 4; the end effector 1 and the front swing drive assembly are located in the detachable part 3, and the first drive The mechanism 10 and the rear swing drive assembly are located on the main body portion 4; as shown in Figures 1A and 15A, the detachable portion 3 is removably connected to the main body portion 4 to removably connect the front swing drive assembly to the rear swing drive assembly. In this way, the space of the main body part 4 is fully utilized to set the swing mechanism, and the detachable connection of the swing mechanism is realized under the condition that the detachable part 3 and the main body part 4 are detachable.

15A-15B are schematic diagrams of a front swing driving member of a stapler 100 according to an embodiment of the present disclosure. 5C and FIGS. 15A-15B, the front swing drive assembly includes a front swing drive member 81, which is connected to the end effector 1; the rear swing drive assembly includes a rear swing drive member 82, which is connected to the first swing drive member 82. A driving mechanism 10 extends in the same direction and is arranged side by side, the detachable part 3 is detachably connected with the main body part 4 so that the front swing driving member 81 and the rear swing driving member 82 are detachably connected, for example, the two are hooked or inserted Wait. The extension direction of the rear swing driving member 82 and the first driving mechanism 10 is the axial direction; during the swing mechanism driving the end effector 1 to swing, the front swing driving member 81 and the rear swing driving member 82 face the end effector 1 in the axial direction. move to drive the end effector 1 to swing toward the first swing direction; for example, the front swing drive member 81 and the rear swing drive member 82 may also move axially away from the end effector 1 to drive the end effector 1 toward the first swing direction Swing in the opposite second swing direction.

For example, as shown in FIG. 15B , the front swing driving member 81 includes a first portion 8001 and a second portion 8002 connected to each other for ease of manufacture. When the length of the front swing driving member 81 in the axial direction is long, the front swing driving member 81 Dividing into two parts connected to each other is beneficial to buffer the stress of the front swing driving member 81, and also facilitates manufacture and installation.

For example, in conjunction with FIGS. 2 and 14A-14B, the front swing drive assembly includes a bendable portion 80 configured to bend toward the first swing direction or the second swing direction to allow the end effector 1 to bend around The folding part 80 swings; the end effector 1 includes a first end close to the front swing drive assembly and a second end opposite to the first end, the first end of the end effector 1 is connected with the front swing drive assembly, and the bendable part 80 It is located in the axial direction between the position where the front swing drive assembly is connected with the first end of the end effector 1 and the position where the front swing drive assembly is connected with the rear swing drive assembly, so that the end effector 1 can be wound around the bendable part 80 swing. The second driving mechanism 20 includes a driving belt 201 extending in the axial direction. During the staple pushing stage, the driving belt 201 enters the end effector 1 through the bendable portion 80 to drive the staple pushing assembly to push out the staples from the staple cartridge assembly 11 , and The belt surface of the transmission belt 201 is substantially perpendicular to the swinging direction of the end effector 1, so as to increase the flexibility of the second driving mechanism 20. Since the transmission belt 201 will pass through the bendable part 80 during the nail pushing stage and the cutting stage, so this solution It is beneficial to reduce the resistance of the swinging head and avoid damage to the second driving mechanism 20 .

5B , for example, the second driving mechanism 20 further includes a connecting portion 202, which is detachably connected with the closing mechanism 2 and is located on the side of the transmission belt 201 away from the end effector 1, wherein the connecting portion 202 is close to the end One end of the effector 1 is connected with the end of the transmission belt 201 away from the end effector 1, and the detachable part 3 is connected with the main body part 4 so that the end of the connecting part 202 away from the end effector 1 is connected with the first driving mechanism 10, so, The transmission belt 201 can be used to reduce the breakage of the second driving mechanism 20 when the end effector 1 swings, and the connecting portion 202 can be used to achieve various functions. For example, a part of the connecting portion 202 also serves as the above-mentioned locking driving structure, eg, the connecting portion 202 is also detachably connected with the detachable connecting structure 6 . Therefore, the same component is fully utilized to realize the above-mentioned multiple functions, which saves space and is of great significance for reducing the size of the stapler 100 .

For example, the second driving mechanism 20 includes a plurality of transmission belts 201, the plurality of transmission belts 201 are stacked in a direction perpendicular to the belt surface, and there is no gap between adjacent transmission belts 201, so as to enhance the strength of the second driving mechanism 20 and ensure The reliability of driving the push nail driving mechanism 40 to move in the axial direction.

For example, the material of the transmission belt 201 is steel, the thickness of each transmission belt 201 in the direction perpendicular to the belt surface is 100 μm to 1000 μm, and the length of each transmission belt 201 in the axial direction is 10 cm to 30 cm, so as to ensure that it can drive the push nails. The strength required to move the mechanism 40 in the axial direction. Of course, size design can be performed according to actual needs, which is not limited in the embodiment of the present disclosure. The material of the transmission belt 201 is also not limited to steel, and can also be other metal materials or organic materials.

For example, referring to FIG. 5B , in the state where the second driving mechanism 20 is connected with the first driving mechanism 10 , the end of the transmission belt 201 away from the first driving mechanism 10 is connected with the nail pushing mechanism 40 , for example, welded with the nail pushing mechanism 40 , of course, other connection methods are also possible.

The direction from the first end of the end effector 1 to the second end of the end effector 1 is the first direction. As shown in FIGS. 11B and 13C , the staple cartridge holder of the staple cartridge includes a first portion 511 and a second portion 512 extending in a first direction, and both the first portion of the staple cartridge holder and the second portion of the staple cartridge holder include a The staple groove of the staples defines a chute extending along the first direction. During the process of driving the nail pushing slider 60 to move by the nail pushing driving mechanism 40, the cutting driving mechanism and the conveyor belt enter the sliding groove through the bendable part 80 and enter the sliding groove through the bendable part 80. Slide in the chute, so as to drive the cutting driving mechanism (ie, the nail pushing driving mechanism 40 ) to move between the first end and the second end of the end effector 1 .

For example, as shown in FIGS. 14A-14B , the front swing drive assembly includes a transmission mechanism that is connected to the front swing drive member 81 and configured to drive the end effector 1 around the bendable portion under the driving of the front swing drive member 81 80 swings. For example, the transmission includes drive teeth 821 bars 820 and gears 811/812/813. Drive teeth 821 bar 820 includes drive teeth 821 extending in the axial direction and connected to the front swing drive member 81 for axial movement under the drive of the front swing drive member 81 ; Formed together. The drive teeth 821 bar 820 includes drive teeth 821 extending in the axial direction and connected with the front swing drive member 81 to move in the axial direction under the driving of the front swing drive member 81 . The gears 811/812/813 mesh with the driving teeth 821, and the driving teeth 821 and the bars 820 move in the axial direction to drive the teeth 821 to rotate. The front swing drive assembly further includes a swing head connecting part, a first end of the swing head connecting part close to the end effector 1 is connected with the first end of the end effector 1, and a second end of the swing head connecting part is far away from the end effector 1 Including terminal teeth 814, which mesh with gears 811/812/813 to make the swing head link and end effector 1 swing driven by gears 811/812/813, and which mesh with gears 811/812/813 The position is the bendable part 80; the disk surface of the toothed disc of the gears 811/812/813 is substantially perpendicular to the belt surface of the transmission belt 201, so that the belt surface of the transmission belt 201 is substantially perpendicular to the direction in which the end effector 1 swings.

For example, as shown in FIGS. 14A-14B , the transmission mechanism includes a plurality of gears arranged in the axial direction, and the adjacent gears among the plurality of gears 3 mesh with each other; The gear 813 meshes with the terminal tooth 814 at the second end of the swing head connecting part, and at least the gear 811 farthest from the end effector 1 among the plurality of gears 811/812/813 meshes with the driving tooth 821 of the driving rack 820, so as to avoid a single The dependence of gears increases the stability of the transmission mechanism.

For example, as shown in FIGS. 14A-14B , the diameter of the chainring of the gear 813 of the plurality of gears 811/812/813 closest to the end effector 1 is smaller than the teeth of the other gears 812/813 of the plurality of gears 811/812/813 The diameter of the disc, so that the connection of the front swing drive mechanism connected with the larger diameter gear moves a smaller distance in the axial direction, so that the terminal teeth 814 of the swing head connecting part can be rotated by a larger angle, that is, with the swing head The end effector 1 connected by the connecting part rotates by a larger angle, so as to facilitate the realization of a larger swing amplitude of the end effector 1 with a limited axial length.

For example, as shown in FIGS. 14A-14B, the stapler 100 further includes a stabilizing rack 830, which meshes with the gears 811/812/813, and the drive teeth 821 are located on the first side of the gears 811/812/813, The stabilizing rack 830 is located on two sides of the gears 811 / 812 / 813 opposite to the first side, and the stabilizing rack 830 is not connected with the front swing driving member 81 . The stabilizing rack 830 can carry the gears 811/812/813, so that the structure and operation of the gears 811/812/813 are more stable.

For example, as shown in FIGS. 14A-14B, in the case where the closing mechanism is the sleeve 2 sleeved on the outside of the second driving mechanism 20 and the transmission mechanism, the staple cartridge assembly 11 includes a first end close to the sleeve 2, the staple anvil 12 includes a first end proximate the sleeve 2 . In the closing stage, the second driving mechanism 20 is driven by the first driving mechanism 10 to move towards the end effector 1 and drive the sleeve 2 to move towards the end effector 1 so that the sleeve 2 is sleeved on the first part of the staple cartridge assembly 11 end effector 1 and the first end of the anvil 12 to apply pressure to the first end of the cartridge assembly 11 and the first end of the anvil 12 to close the end effector 1; the sleeve 2 includes a first portion proximate the end effector 1 21 and the second part 22 away from the end effector 1; the stapler 100 further comprises a rotatable sleeve connecting part 25, the first part 21 of the sleeve 2 is connected with the second part 22 of the sleeve 2 through the rotatable sleeve The part 25 is connected, and the rotatable sleeve connection part 25 is located at the bendable part 80 so that the first part 21 of the sleeve 2 can swing with the end effector 1 , so that the closing mechanism can be adapted to the design of the swing of the end effector 1 .

For example, as shown in FIGS. 14A-14B , the rotatable sleeve 2 connecting part includes a first hinge structure and a second hinge structure connected to each other, the first hinge structure is connected with the first part of the sleeve 2, and the second hinge structure is connected with The second part of the sleeve 2 is connected.

16A is a partial schematic diagram of a rear swing drive assembly of a stapler 100 according to an embodiment of the disclosure; FIG. 16B is a partial schematic diagram of a manual adjustment drive mechanism of a stapler 100 according to an embodiment of the disclosure; 9 and FIGS. 16A-16B , the rear swing drive assembly further includes a third swing drive mechanism configured to drive the front swing drive member 81 and the rear swing drive member 82 during the swing mechanism driving the end effector 1 to swing. moving axially toward or away from the end effector 1 and the third swing drive mechanism is configured to adjust the front swing drive member 81 and the rear swing drive member 82 to move axially toward the end effector 1 or the distance moved away from the end effector 1 in the axial direction, so as to adjust the swing amplitude of the end effector 1 .

18A-18B are schematic diagrams of a handle provided by an embodiment of the present disclosure; as shown in FIGS. 16A-16B and FIGS. 18A-18B , the third swing driving mechanism includes a gear adjustment switch 98, and the gear adjustment switch 98 is configured as Step-by-step adjustment of the distance that the front swing drive member 81 and the rear swing drive member 82 move axially toward the end effector 1 , or the distance that the front swing drive member 81 and the rear swing drive member 82 move axially away from the end effector 1 distance, so as to adjust the swing amplitude of the end effector 1 step by step.

For example, the front swing drive member 81 and the rear swing drive member 82 are both single rods extending in the axial direction; the front swing drive member 81 extends in the axial direction and is arranged side by side with the second drive mechanism 20 to make full use of the long and narrow sleeve 2 The rear swing drive member 82 extends in the axial direction and is arranged side by side with the first drive mechanism 10 to make full use of the space inside the elongated sleeve 2 .

As shown in FIGS. 15A-15B , the detachable part 3 is detachably connected with the main body part 4 so that the front swing drive member 81 and the rear swing drive member 82 are detachably connected, so that the front swing drive assembly and the rear swing drive assembly can be detachably connected. Removably connected.

For example, the front swing drive member 81 includes a first part in FIGS. 15A-15B and a second part removably connected to the first part, and the front swing drive member is not connected to the main body part 4 when the releasable part 3 of the stapler 100 is not connected to the main body part 4 Both the first and second parts of 81 are located in the detachable part 3 .

As shown in FIGS. 16A-16B , the third swing drive mechanism is a manual adjustment drive mechanism. By manually adjusting the gear position, each time one gear position is toggled toward the first toggle direction, the front swing drive member 81 and the rear swing drive member 82 move along the The distance of moving the end effector 1 in the axial direction by one gear to make the end effector 1 rotate the angle of one gear towards the first swing direction; 81 and the rear swing drive member 82 move axially away from the end effector 1 by a distance of one gear to rotate the end effector 1 by one gear towards the second swing direction. For example, as shown in FIG. 1 , the manual adjustment drive mechanism includes a manual knob 96 that is manually operated to control the gears in which the front swing drive member 81 and the rear swing drive member 82 move axially toward the end effector 1 .

Alternatively, the third swing drive mechanism is an electric drive mechanism. For example, the electric drive mechanism includes an electric motor and a swing head control switch; the electric motor is configured to rotate to drive the front swing drive member 81 and the rear swing drive member 82 to move axially toward the end effector 1 or move axially away from the end effector 1 ; The swing head control switch is configured to control sending an electrical signal to the electric motor to control the operation of the motor.

As shown in FIGS. 16A-16B and 18A-18B, as shown, the main body part 4 includes a handle 9, the head swing control switch is a dial 93 switch, and the dial 93 switch includes a dial 93 arranged on the surface of the handle 9. The disc 93 is configured to be toggled toward the first toggle direction to drive the end effector 1 to swing toward the first swing direction, and configured to be toggled toward the second toggle direction to drive the end effector 1 to swing toward the second swing direction The direction swings, and the first toggle direction is different from the second toggle direction.

For example, the dial 93 has gear marks on it. Each time a gear is toggled toward the first swing direction, the front swing drive member 81 and the rear swing drive member 82 move axially toward the end effector 1 by a distance of one gear position to rotate the end effector 1 toward the first swing direction The angle of one gear; or/and, for each gear toggled toward the second toggle direction, the front swing drive member 81 and the rear swing drive member 82 move axially away from the end effector 1 by a distance of one gear such that The end effector 1 is rotated towards the second swing direction by an angle of one gear.

Exemplarily, FIG. 17 is a schematic diagram 1 of the stapler 100 provided in an embodiment of the present disclosure, before the end effector 1 is closed, when the nail pushing slider 60 is located at the second end of the end effector 1 , as shown in FIG. 17 . As shown, the stapler 100 includes an end effector 1, a closing mechanism and a staple push assembly. The end effector 1 includes a staple cartridge assembly 11 and a staple anvil 12, and staples are arranged in the staple cartridge assembly 11; the closing mechanism is configured to drive the staple cartridge assembly 11 and the staple anvil 12 to close together in the closing stage to clamp the target tissue, and the end effector is performed. The device 1 has a first end proximate the closure mechanism and a second end remote from the closure mechanism; the staple pusher assembly is configured to push staples from the cartridge assembly 11 from the second end to the first end during the staple push phase following the closure phase The target tissue is sutured from the second end to the first end into the target tissue. The process of suturing the target tissue from the second end of the end effector 1 to the first end of the end effector 1 compared to suturing the target tissue from the first end of the end effector 1 to the second end of the end effector 1 , the accuracy of suturing the target tissue is higher.

The nail pushing assembly includes a nail pushing piece 700 , a nail pushing slider 60 and a nail pushing driving mechanism 40 . The staple pushing pieces 700 are arranged in the direction from the second end to the first end, and are configured to apply a staple pushing pressure to the staples to push the staples out of the staple cartridge assembly 11; 700 applies pressure to drive the push tab 700 to apply a push pressure to the staples; the push drive mechanism 40 is configured to drive the push slider 60 to move in a direction from the second end to the first end during the push stage, thereby pushing the staples The slider 60 is in contact with the nail pushing piece 700 in sequence from the second end to the first end to apply a nail pushing pressure to the nail pushing piece 700 .

For example, as shown in FIG. 17 , before the nail pushing stage, the nail pushing slide block 60 is located at the second end; during the nail pushing stage, the nail pushing slide block 60 moves from the second end to the first end and pushes the nail cartridge assembly 11 into the nail cartridge assembly 11 . The staples are sequentially pushed out in the direction from the second end to the first end to suture the target tissue.

For example, as shown in Figure 17, the stapler 100 also includes a cutting device and a cutting drive mechanism. The cutting device is configured to cut the target tissue in a cutting stage after the entire target tissue is sutured; the cutting driving mechanism is configured to drive the cutting device to cut the target tissue in the cutting stage, and in the cutting stage, the cutting device moves from the first end to the second Two ends are used to cut the target tissue in the direction from the first end to the second end.

For example, the cutting device includes a knife-carrying member and a cutting knife 605 . The pusher slide 60 doubles as a knife-carrying member, ie the cutting device is located at the second end of the end effector 1 during the closing and pushing stages. The nail pushing driving mechanism 40 is reused as a cutting driving mechanism; the cutting blade 605 is movably connected with the nail pushing slider 60, and the nail pushing slider 60 moves to move the cutting blade 605; in the nail pushing stage, the cutting blade 605 is at least partially located in the nail pushing stage In the slider 60 , the cutting blade 605 moves along the direction from the second end to the first end along with the staple pushing slider 60 , and the cutting blade 605 and the target tissue sandwiched between the staple cartridge assembly 11 and the staple anvil 12 have The distance is preset so that the cutting blade 605 does not contact the target tissue. FIG. 20 is a schematic diagram of the staple pushing slider 60 at the first end at the end of the staple pushing stage in the stapler 100 according to an embodiment of the present disclosure. As shown in FIG. 20 , when the nail pushing stage is over, the nail pushing slider 60 reaches the first end of the end effector 1; in the cutting stage, the nail pushing driving mechanism 40 pushes the nail pushing slider 60 so that the cutting knife 605 follows The pusher slider 60 moves in the direction from the first end to the second end, and the cutting knife 605 contacts the target tissue and cuts the target tissue in the direction from the first end to the second end under the action of the driving force of the knife. Cutting after the target tissue is sutured as a whole is beneficial to improve the accuracy of suture and cutting, and the double use of the pusher slider 60 as a knife-carrying component can simplify the structure and save space. For example, the stapler 100 includes a knife drive structure 602, the cartridge holder includes a resistance surface 503, the resistance surface 503 faces the knife drive structure 602, and the knife drive structure 602 is configured to be executed when the cutting device is driven by the cutting drive mechanism. When the first end of the tool 1 hits the resistance surface 503, the resistance surface 503 exerts a driving force for the knife out drive structure 602, and the knife out drive structure 602 is configured to contact the cutting knife 605 under the action of the knife out drive force to The cutting blade 605 applies a first driving force to drive the cutting blade 605 to move toward the target tissue. Then, the nail pushing driving mechanism 40 pushes the nail pushing slider 60 to make the cutting blade 605 move along the direction from the first end to the second end along with the nail pushing slider 60, and the cutting blade 605 contacts the target under the action of the driving force of the blade. tissue and cut the target tissue along the direction from the first end to the second end, so that the structure can be simplified, the reciprocating movement of the cutting blade 605 between the first end and the second end can be reduced, and the working efficiency of the stapler 100 can be improved .

Of course, in other embodiments, the nail pushing and cutting may be independent of each other, that is, the nail pushing slider 60 is no longer used as a knife-carrying member. That is, the cutting device includes a knife-carrying part and a cutting knife 605; the cutting knife 605 is movably connected with the knife-carrying part, and the knife-carrying part moves to move the cutting knife 605; The first end; in the cutting stage, the cutting drive mechanism drives the cutting device to move from the first end to the second end to cut the target tissue along the direction from the first end to the second end, and the knife-carrying member and the nail pushing slider 60 are mutually Independent, the cutting drive mechanism and the nail pushing drive mechanism 40 are independent of each other.

In one example, as shown in FIG. 17 , for example, the nail push drive mechanism 40 is configured to be disconnected from the nail push slider 60 during the closing phase and to move toward the second end of the end effector 1 to communicate with the pusher before the nail push phase. The tack block 60 is connected and moves in the direction from the second end to the first end during the push stage to drive the push block 60 in the direction from the second end of the end effector 1 to the first end of the end effector 1 . direction move.

In another example, for example, the nail push drive mechanism 40 is configured to be located at the second end of the end effector 1 and connected to the nail push slider 60 during the closing phase, and to travel along the second end of the end effector 1 from the end effector 1 during the nail push phase. The direction of the end to the first end of the end effector 1 is moved to drive the nail push slider to move in the direction from the second end of the end effector to the first end of the end effector.

For example, in another embodiment, during the cutting stage, the cutting device is moved from the second end of the end effector to the first end of the end effector to cut the target tissue in a direction from the second end to the first end. For example, the push-pin slider is reused as a knife-carrying part.

Alternatively, in some embodiments, the cutting device and the cutting drive mechanism are located at the second end of the end effector during the staple pushing stage; the cutting device cuts after the entire target tissue is stapled; and during the cutting stage, the cutting drive mechanism drives The cutting device moves from the second end to the first end to cut the target tissue along the direction from the second end to the first end, the knife-carrying part and the nail-pushing slider are independent of each other, and the cutting driving mechanism and the nail-pushing driving mechanism are independent of each other . After the push staple drive mechanism moves from the second end of the end effector to the first end of the end effector to staple the target tissue, the push staple drive mechanism then drives the staple push slider to move from the first end of the end effector to the end effector. The second end of the end effector is used to connect the push nail slider with the cutting device. Then, the push nail driving mechanism drives the cutting device to move from the second end of the end effector to the first end of the end effector. Cutting in the cutting device The knife is in contact with the target tissue to cut the target tissue in a direction moving from the second end of the end effector to the first end of the end effector, i.e., in this embodiment, the cutting knife in the cutting device is always in contact with the target tissue. The target tissue contacts, and when it moves in a direction from the second end of the end effector to the first end of the end effector, cuts the target tissue. For example, the end of the knife-carrying member close to the nail-pushing slider has a third connection structure, and the end of the nail-pushing slider close to the knife-carrying member has a fourth connection structure, and the third connection structure is connected with the fourth connection structure, thereby Connect the push nail slider to the cutting device. The third connection structure can refer to the above-mentioned first connection structure, for example, it includes a through hole, and the third connection structure can refer to the above-mentioned second connection structure, for example, includes an elastic connector. For details, please refer to the connection between the first connection structure and the second connection structure. Way.

For example, in other embodiments, the cutting device includes a knife-carrying part and a cutting knife, the nail-pushing slider is reused as the knife-carrying part, and the nail-pushing driving mechanism is reused as a cutting-driving mechanism; the cutting knife is movably connected with the nail-pushing slider , the push nail slider moves to make the cutter move. The staple pushing stage and the cutting stage are performed simultaneously, the staple pushing slider moves in the direction from the second end to the first end to sequentially push the staples out of the suturing target tissue, the cutting knife contacts the target tissue and the cutting knife moves with the staple pushing slider in order to cut the target tissue in the direction from the second end to the first end, and the cutting knife and the pusher slider are configured to make each part of the target tissue to be sutured in turn in the direction from the second end to the first end. After being sutured with staples, it is cut with a cutting knife. That is, cutting while sewing, for each part of the target tissue to be sutured and cut, the cutting lags behind the suture.

For example, in the case of such seam cutting, for example, during the movement of the cutting knife 605 with the pusher block 60 in the direction from the second end to the first end, the end of the pusher block 60 closes to the end. The end of the first end of the end effector 1 first drives the pusher piece 700 to push out the staples, and the cutting knife 605 is located on the side of the end of the pusher block 60 close to the second end of the end effector 1 and is connected with the pusher block. The ends of 60 are spaced apart by a preset distance. For example, the preset distance is the sum of the widths in the direction from the second end to the first end of 2 to 4 staples continuously arranged in the direction from the second end to the first end. For each part of stitching and cutting, the degree of lag between cutting and stitching is more suitable, which can ensure a better effect of stitching and cutting.

For example, for the various embodiments described above in which suturing is performed from the second end of the end effector 1 to the first end of the end effector 1, the stapler 100 further includes a first drive mechanism 10 configured to: In the closing stage, the first driving mechanism 10 is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector 1; in the staple pushing stage, the first driving mechanism 10 is separated from the closing mechanism and drives the staple pushing assembly to remove the staples from the staples. The staple cartridge assembly 11 is pushed out. The stapler 100 also includes a second drive mechanism 20 that is removably connected to the first drive mechanism 10, the second drive mechanism 20 is configured to be removably connected to the closing mechanism during the closing phase and configured to be removably connected to the first drive mechanism 10. The driving mechanism 10 moves toward the second end of the end effector 1 so that the closing mechanism contacts the staple cartridge assembly 11 and the staple anvil 12 and applies pressure to the staple cartridge assembly 11 and the staple anvil 12 to close the end effector 1; The second driving mechanism 20 is also configured to be separated from the closing mechanism after the end effector 1 is closed, and continue to move toward the second end of the end effector 1 under the driving of the first driving mechanism 10 to connect with the nail push driving mechanism 40 and continue Move toward the second end of the end effector 1 to drive the nail pushing driving mechanism 40 to reach the second end of the end effector 1 and connect with the nail pushing slider 60; The driving mechanism 40 is driven by the driving mechanism 10 to move in the direction from the second end to the first end to suture the target tissue. For specific structures such as the first driving mechanism 10 and the second driving mechanism 20, reference may be made to the descriptions in the previous embodiments, which will not be repeated here.

For example, for the various embodiments described above in which suturing is performed from the second end of the end effector 1 to the first end of the end effector 1, the cutting drive device is configured to drive the cutting device under the drive of the first drive mechanism 10 to stitch the end effector 1. Target tissue for cutting.

For example, for the above-mentioned various embodiments of suturing from the second end of the end effector 1 to the first end of the end effector 1, the closing mechanism is the sleeve 2 sleeved on the outer side of the second driving mechanism 20, and the staple cartridge The assembly 11 includes a first end close to the sleeve 2, and the anvil 12 includes a first end close to the sleeve 2; in the closing stage, the second drive mechanism 20 is driven by the first drive mechanism 10 to move toward the end effector 1 to move. The driving sleeve 2 is moved toward the end effector 1 so that the sleeve 2 is sleeved on the first end of the staple cartridge assembly 11 and the first end of the staple anvil 12 and the first end of the staple cartridge assembly 11 and the staple anvil 12 . The first end applies pressure to close the end effector 1 . For the specific structure, please refer to the previous description about the sleeve 2 closing the end effector 1 . The features of various embodiments of the present disclosure may be combined without conflict.

At least one embodiment of the present disclosure provides a handle 9, which can be used for a stapler 100, and the stapler 100 can be used as a medical instrument, such as a surgical instrument, for holding target tissue, and suturing and cutting the target tissue . The handle 9 is configured to be removably connected to the removable portion 3 of the stapler 100 , the removable portion 3 including the end effector 1 including the staple cartridge assembly 11 and the staple anvil 12 .

Exemplarily, FIGS. 18A-18B are schematic diagrams of a handle provided by an embodiment of the present disclosure, and FIG. 19 is an enlarged schematic diagram of a dial and a two-way control button. 18A-18B and FIG. 19, the handle 9 includes a dial 93 switch, and the dial 93 switch includes a dial 93 provided on the first surface 01 of the handle 9, and the dial 93 is configured to be Turn and rotate to control the swing direction and swing angle of the end effector 1, so as to control the swing direction and swing angle of the end effector 1 by operating the dial 93, which is convenient to operate and control during the operation.

For example, the dial 93 is configured to be toggled toward the first rotational direction to rotate toward the first rotational direction to drive the end effector 1 to swing toward the first swing direction, and configured to be toggled toward the second rotational direction to rotate Rotate towards the second rotation direction to drive the end effector 1 to swing towards the second swing direction, the first rotation direction is opposite to the second rotation direction, so as to control the end effector 1 to swing towards different directions by operating the dial 93 , The operation is convenient and easy to control during the operation.

For example, the dial 93 has a gear mark; according to the gear mark, each time the user operates the dial 93 to rotate toward the first rotation direction by one gear, the end effector 1 is rotated toward the first swing direction by one gear corresponding to and according to the gear mark, each time the user operates the dial 93 to rotate one gear towards the second rotation direction, the end effector 1 rotates towards the second swing direction by the corresponding angle of one gear, so as to realize the The dial 93 is used to adjust the swinging amplitude of the end effector 1 in different directions, which is convenient to operate and control during the operation.

For example, as shown in FIGS. 18A-18B and FIG. 19 , the gear mark includes a plurality of gear slots 900 arranged along the first rotation direction and the second rotation direction, and the plurality of gear slots 900 are configured such that the dial 93 faces the first rotation direction. Each time one gear slot 900 is rotated in one rotation direction, the end effector 1 is rotated toward the first swing direction by an angle corresponding to one gear position; each time the dial 93 rotates one gear slot 900 towards the second rotation direction, the end The actuator 1 rotates toward the second swing direction by an angle corresponding to one gear. In this way, the operator can adjust the number of the rotating gear grooves 900 through tactile sensation, so as to control the swinging gear of the swinging end effector 1 .

For example, as shown in FIGS. 18A-18B and FIG. 19 , the extending direction of the gear slot 900 is consistent with the extending direction of the handle 9 , and the first and second rotating directions are substantially perpendicular to the extending direction of the handle 9 .

The detachable part 3 also includes a closing mechanism, a nail push assembly and a cutting device, and the details of these structures can be referred to the descriptions in the previous embodiments. 18A-18B, the handle 9 further includes a two-way control button 94, the two-way control button 94 includes a first end 941 and a second end 942, and the two-way control button 94 is configured such that the first end is pressed to control the closing stage, push The staple stage and the cutting stage are performed in sequence; in the closing stage, the closing mechanism engages the staple cartridge assembly 11 with the staple anvil 12 to close the end effector 1 to clamp the target tissue; in the staple pushing stage, the staple pushing assembly will staple the staples Pushed out from the staple cartridge assembly 11 to staple the target tissue; in the cutting stage, the cutting device cuts the target tissue; and the bidirectional control button 94 is also configured so that the second end is pressed to control the closure mechanism not to sever the staple cartridge assembly 11 The staple cartridge assembly 11 and the staple anvil 12 are separated from each other so that the end effector 1 is opened.

For example, as shown in FIGS. 18A-18B and FIG. 19, the two-way control button 94 is located on the first surface 01 of the handle 9, adjacent to the dial 93 switch, and is aligned with the dial 93 switch along the extension direction of the handle 9, so that It is up to the operator to operate the dial 93 and the two-way control button 94 . For example, the first end of the two-way control button 94 is opposite the second end of the two-way control button 94 in the extending direction of the handle 9 to further facilitate the operation of the first and second ends 941 and 942 of the two-way control button 94 .

For example, as shown in Figures 18A-18B and Figure 19, the handle 9 also includes a safety reminder button 95 configured to be pressed after the first end 941 of the bidirectional control button 94 and after the closing phase is normally performed In the normal closing prompt state to prompt the operator that the first end 941 of the two-way control button 94 can continue to be pressed to perform the nail push stage, and is configured to be in the normal suture prompt state after the normal execution of the nail push stage to prompt the operator to Continue to press the first end 941 of the bidirectional control button 94 to perform the cutting phase, and is configured to be in a normal cutting prompt state after the normal execution of the cutting phase to remind the operator that the second end 942 of the bidirectional control button 94 can be pressed to remove the end. Actuator 1 opens.

For example, in the normal closing prompt state, the normal suture prompt state and the normal cutting prompt state, the safety prompt button 95 protrudes from the surface of the handle 9, otherwise, the safety prompt button 95 is recessed on the surface of the handle 9 or is substantially flush with the surface of the handle 9 level, so that the operator can know whether each stage is proceeding normally by observing or touching the safety prompt button 95 at each stage, so as to decide the next operation.

For example, as shown in FIGS. 18A-18B and FIG. 19 , the handle 9 also has a second surface 05 adjacent to and intersecting the first surface 01 , and a safety reminder button 95 is located on the second surface 05 of the handle 9 .

At least one embodiment of the present disclosure provides a main body of a stapler 100. Exemplarily, FIG. 20 is a schematic diagram of a main body of a stapler 100 provided by an embodiment of the present disclosure. As shown in FIG. 20 , the main body of the stapler 100 includes any handle 9 provided in the embodiment of the present disclosure, and a driving portion 99 connected to the handle 9 . The overall extension direction of the driving part 99 is the axial direction, and the axial direction intersects with the extending direction of the handle 9; the end of the driving part 99 away from the handle 9 is detachably connected to the detachable part 3, and includes an electric motor and a rear swinging driving member 82 The electric motor is connected with the switch signal of the dial 93, and the dial 93 switches control the work of the electric motor; the rear swing drive member 82 is connected with the electric motor, extending along the axial direction, and the electric motor is configured to rotate under the control of the dial 93 to drive The rear swing driving member 82 moves in the axial direction to drive the end effector 1 to swing, so that the operation of the electric motor can be controlled by operating the dial 93 on the handle 9 to control the movement of the rear swing driving member 82 to control the end effector The swing angle of the device 1 is easy to operate.

For example, the driving part 99 is detachably connected with the handle 9 . For the main body of the stapler 100 , the driving part 99 and the handle can also be replaced, which is beneficial to cost saving.

For example, when the dial 93 is configured to rotate by gears toward the first rotation direction or the second rotation direction, every time the dial 93 rotates toward the first rotation direction by one gear, the electric motor rotates forwardly by one gear to drive The rear swing driving member 82 moves away from the handle 9 in the axial direction by a distance of one gear to make the end effector 1 rotate by one gear in the first swing direction; each time the dial 93 rotates in the second swing direction by one gear, The electric motor reversely rotates one gear to drive the rear swing drive member 82 to move axially close to the handle 9 by one gear to rotate the end effector 1 toward the second swing direction by one gear, so that the handle can be operated by The dial 93 on the 9 realizes convenient control of the rotation direction and gear of the electric motor, thereby controlling the movement of the rear swing driving member 82 to control the swing angle of the end effector 1, and the operation is simple and convenient.

For example, the driving part 99 further includes a first driving mechanism 10, the first driving mechanism 10 and the rear swing driving member 82 extend in the same direction and are arranged side by side, and the first driving mechanism 10 is configured such that in the closing stage, the first driving mechanism 10 and The closing mechanism is detachably connected to drive the closing mechanism to close the end effector 1; in the staple push stage after the closing stage, the first drive mechanism 10 is disengaged from the closing mechanism and drives the staple push assembly to push the staples out of the staple cartridge assembly 11 In order to suture the target tissue; in the cutting stage, the first driving mechanism 10 drives the cutting device to cut the target tissue. Regarding the specific features of the first driving mechanism 10 , please refer to the descriptions in the previous embodiments, which will not be repeated here.

For example, as shown in FIG. 20 , the driving part 99 is located on the first surface 01 of the handle 9 and intersects the first surface 01 in the axial direction; the driving part 99 includes a first end 941 connected with the handle 9 and is axially away from the handle The second end 942 of the 9, the first surface 01 faces the second end 942 of the driving part 99, so that the operator can turn the dial 93 on the first surface 01, and the second surface 05 is adjacent to the first surface 01 And the intersection is convenient for the operator to identify the safety prompt switch on the second surface 05 .

At least one embodiment of the present disclosure provides a stapler 100 , and the stapler 100 includes any one of the stapler 100 main bodies provided in the embodiments of the present disclosure, and a detachable part 3 . The detachable part 3 of the stapler 100 is detachably connected with the main body part 4 of the stapler 100, and the detachable part 3 further includes a front swing driving assembly, which is connected with the end effector 1, and the detachable part 3 is connected with the stapler The main body 100 is detachably connected so that the front swing driving assembly and the rear swing driving member 82 are detachably connected, and the front swing driving assembly drives the end effector 1 to swing under the driving of the rear swing driving member 82 . For the specific structures of the front swing drive assembly and the rear swing member, please refer to the descriptions in the previous embodiments, which will not be repeated here.

For example, for the stapler 100 including the main body of any stapler 100 provided in the embodiments of the present disclosure, the detachable part 3 further includes a second driving mechanism 20 extending in the axial direction; the detachable part 3 is connected with the main body of the stapler 100 to make The second drive mechanism 20 is detachably connected to the first drive mechanism 10 ; the second drive mechanism 20 is configured to be detachably connected to the closing mechanism during the closing phase and to move toward the end effector 1 under the drive of the first drive mechanism 10 . The closing mechanism is made to close the end effector 1; the second drive mechanism 20 is also configured to be disengaged from the closing mechanism during the nail pushing stage and continue to move towards the second end 942 of the end effector 1 under the drive of the first drive mechanism 10 to The staple pushing assembly is driven to push out the staples from the staple cartridge assembly 11 ; the second driving mechanism 20 is further configured to: in the cutting stage, the second driving mechanism 20 drives the cutting device to cut the target tissue under the driving of the first driving mechanism 10 . For the specific structures of the second driving mechanism 20 and the first driving mechanism 10, please refer to the descriptions in the previous embodiments, which will not be repeated here.

The above descriptions are only exemplary embodiments of the present invention, and are not intended to limit the protection scope of the present invention, which is determined by the appended claims.

Claims

A stapler comprising:

an end effector, including a staple cartridge assembly and a staple anvil, wherein the staple cartridge assembly is provided with staples;

a closing mechanism, wherein, in an initial state, the end effector is in an open state; in a closing phase, the closing mechanism is configured to drive the staple cartridge assembly and the staple anvil into engagement to close the end effector to clamp the target tissue;

a staple pusher assembly, wherein, in a staple pusher stage following the closure stage, the staple pusher assembly is configured to push the staples out of the staple cartridge assembly to staple the target tissue; and

a locking mechanism configured to confine the closure mechanism to a first position during the nail push phase to maintain the closure mechanism in a closed state of the end effector, and configured to lock the end effector in the initial state A closure mechanism is defined in a second position to maintain the end effector in the open state.
The stapler of claim 1, wherein the locking mechanism comprises:

a first restraining structure configured to restrain the closing mechanism in the first position during the nail pushing stage; and

The second limiting structure is configured to limit the closing mechanism to the second position in the initial state.
The stapler of claim 2, further comprising:

a first elastic member connected to the closing mechanism, wherein during the closing phase, the closing mechanism moves toward the end effector to close the end effector and elastically deform the first elastic member ;

In the nail pushing stage, the elastically deformed first elastic member exerts, under the action of its elastic restoring force, a first resistance to the closing mechanism that prevents the closing mechanism from moving toward the end effector, the The first limiting structure is configured to apply a second resistance to the closing mechanism opposite the direction of the first resistance, the first resistance and the second resistance are balanced to limit the closing mechanism to the first resistance Location;

In the initial stage, when the closing mechanism is subjected to a driving force that drives it away from the second position, the second limiting structure is configured to apply a third resistance force to the closing mechanism to balance with the driving force The closure mechanism is thereby limited to the second position.
The stapler of claim 3, wherein the first limiting structure comprises:

a first limiting slot, having a first side wall, located on the closing mechanism and configured to move with the movement of the closing mechanism; and

A first locking member, wherein at least a portion of a first end of the first locking member is confined in the first limiting groove and is in contact with the first side wall to give all The first side wall applies a fourth resistance, so that the second resistance is applied to the closing mechanism through the first limiting groove, and the fourth resistance and the second resistance are equal in magnitude and in the same direction;

The second limiting structure includes:

a second limiting slot, having a second side wall, located on the closing mechanism and configured to move with the movement of the closing mechanism; and

A second locking member, wherein, at the initial stage, at least a portion of a first end of the second locking member is confined in the second limiting groove and is configured to be in contact with the second sidewall to A fifth resistance is applied to the second side wall, so that the third resistance is applied to the closing mechanism through the second limiting groove, and the fifth resistance and the third resistance are equal in size and are both equal to the The direction of the first resistance is the same.
The stapler according to claim 4, wherein the first locking member and the second locking member are the same common locking member, and in the closing stage, the first limiting groove and the second limiting groove a position slot moves relative to the common locking member such that the common locking member is configured to move from the second limit slot to the first limit slot;

When the first end of the common locking member is at least partially confined in the first limiting groove, the common locking member and the first limiting groove constitute the first locking member;

When the first end of the common locking member is at least partially confined in the second limiting groove, the common locking member and the second limiting groove constitute the second locking member.
The stapler according to claim 5, wherein the moving direction of the closed structure, the first limit groove and the second limit groove is an axial direction, and along the axial direction, the first limit The position slot is located on a side of the second limit slot away from the end effector.
The stapler of claim 6, wherein the locking mechanism further comprises:

a passage groove, located between the first limit groove and the second limit groove and communicated with the first limit groove and the second limit groove, wherein, in the closing stage, the The common locking member is configured to move from the second limiting groove to the first limiting groove through the passage groove.
8. The stapler of claim 7, wherein the common locking member further comprises a second end opposite the first end, and a neck connecting the first end and the second end department;

The passage slot is configured to allow passage of the neck but not the first end so that in the initial stage, the first end cannot pass through the passage slot and is at least partially confined to the passage In the second limiting groove, and in the nail pushing stage, the first end portion cannot pass through the passage groove and is at least partially limited in the first limiting groove.
The stapler of claim 8, wherein the direction from the first end to the second end is a longitudinal direction, the longitudinal direction being perpendicular to the axial direction, perpendicular to the axial direction and the The vertical direction is horizontal;

The width of the channel groove in the lateral direction is smaller than the width of the first limit groove in the lateral direction and smaller than the width of the second limit groove in the lateral direction; the first limit groove The width of the end portion in the transverse direction is larger than the width of the neck portion in the transverse direction and larger than the width of the channel groove in the transverse direction.
The stapler of claim 8, wherein the locking mechanism further comprises a locking drive structure;

During the closing phase, the locking drive structure is configured to drive the common locking member to move in the longitudinal direction away from the second end to move the first end to the second limit Outside the groove, along with the movement of the first limit groove and the second limit groove, the neck is configured to move from the second limit groove to the first limit groove through the passage groove. bit slot;

After the end closer is closed, the locking drive structure is configured to drive the common locking member to move in the longitudinal direction toward the second end to move at least a portion of the first end to The first limit groove is limited in the first limit groove, and at least a part of the first end portion is in contact with the first side wall to apply the first side wall to the first side wall. Four resistances.
11. The stapler of claim 10, wherein at least a portion of the first end is in contact with a first portion of the first side wall proximate the channel slot to apply the first portion of the first side wall to the first portion of the first side wall. For the fourth resistance, a first portion of the first sidewall faces away from the end effector.
The stapler according to claim 8, wherein the closing mechanism is a hollow sleeve, and the first limiting groove, the second limiting groove and the passage groove penetrate through the barrel wall of the sleeve .
The stapler of claim 12, comprising:

a fixing bracket, wherein the sleeve is sleeved on the outer side of the fixing bracket, and the first limiting groove, the second limiting groove and the passage groove expose the outer surface of the fixing bracket;

The fixing bracket includes a through hole penetrating through the outer surface, when at least part of the first end of the common locking mechanism is confined in the first limiting groove or in the second limiting groove At least part of the neck and the second end are located in the through hole.
14. The stapler of claim 13, wherein the first end includes a lower surface facing the fixation bracket, when at least a portion of the first end of the common locking mechanism is constrained to the first limit The outer surface of the fixing bracket is in direct contact with the lower surface of the first end portion to support the first end portion when being in the position slot or being confined in the second limiting slot.
14. The stapler of claim 13, wherein the common locking member and the through hole constitute a latch structure.
The stapler of claim 5, wherein at least a portion of the first end portion has a length in the axial direction smaller than a length of the first limiting groove in the axial direction.
The stapler of claim 4, wherein the first side wall is a first arc shape, and at least a part of the side surface of the first end portion in contact with the first side wall is a second arc shape, The curvature of the first arc and the second arc are the same.
The stapler according to claim 7, wherein the planar shape of the channel groove is a straight bar.
The stapler of claim 12, wherein the locking driving structure comprises a bearing surface facing the common locking member; the bearing surface comprises a first surface, a first slope, a projecting surface, a second sloped surface, and a second surface, the first sloped surface connecting the first surface and the projecting surface, the second sloped surface connecting the projecting surface and the second surface, the first sloped surface There is a first included angle between the sloped surface and the protruding surface, and a second included angle between the second sloped surface and the protruding surface;

In the longitudinal direction, the distance from the protruding surface to the second limit groove is smaller than the distance from the first surface to the second limit groove and smaller than the distance from the second surface to the second limit groove The distance of the groove, the distance from the protruding surface to the channel groove is less than the distance from the first surface to the channel groove and less than the distance from the second surface to the channel groove, the projecting surface to the channel groove The distance of the first limit groove is smaller than the distance from the first surface to the first limit groove and smaller than the distance from the second surface to the first limit groove;

In the initial stage, the second end is located on a side of the first slope away from the second slope;

During the closing phase, the locking drive structure is configured to move relative to the common locking member in the axial direction to move the second end along the first ramp to the protruding surface to drive the The common locking member is moved in the longitudinal direction away from the second end portion, thereby causing the second end portion to move along the protruding surface and the second ramp surface in turn to the position of the second ramp surface. a side away from the first ramp to move the common locking member in the longitudinal direction toward the second end;

During the closing phase, the movement of the locking drive structure relative to the common locking member is synchronized with the movement of the first limiting groove and the second limiting groove relative to the common locking member, so that the During the movement of the second end portion relative to the locking driving structure, the neck portion moves from the second limiting groove to the first limiting groove through the passage groove.
20. The stapler of claim 19, wherein the fixed bracket and the common locking member do not move in the axial direction and the locking drive structure moves in the axial direction.
21. The stapler of claim 20, further comprising a first drive mechanism and a second drive mechanism, wherein the first drive mechanism is connected to the second drive mechanism and configured to drive the second drive mechanism to move ;

During the closing stage, the second drive mechanism is detachably connected to the closing mechanism and is configured to move toward the end effector under the drive of the first drive mechanism such that the closing mechanism and the closing mechanism a cartridge assembly and an anvil contact and apply pressure to the cartridge assembly and anvil to close the end effector;

The locking driving structure is arranged on the second driving mechanism.
21. The stapler of claim 21, wherein, during the staple push stage, the second drive mechanism is configured to disengage from the closure mechanism and continue to move toward the end effector to drive the staple push assembly to move the staples are ejected from the cartridge assembly;

The first surface is located at an end of the second surface proximate the end effector, during the closing phase, during movement of the second end relative to the locking drive structure, the first surface the end portion is moved from the second limit groove to the first limit groove;

During the nailing phase, the second end portion moves over the second surface and the second surface is configured to not apply to the second end portion driving the common locking structure to move in the longitudinal direction force.
The stapler of claim 19, wherein the locking mechanism further comprises:

A second elastic member configured to be compressed during movement of the common locking member in a direction away from the second end in the longitudinal direction, and to be compressed as the common locking member approaches the first longitudinal direction in the longitudinal direction In the process of moving in the direction of the two ends, it is restored under the action of its elastic restoring force.
19. The stapler of claim 19, wherein the second end portion is tapered in the longitudinal direction toward the bearing surface.
The stapler of claim 19, wherein the first ramp surface and the second ramp surface are flat or curved.
11. The stapler of claim 1, wherein, during an opening phase following the staple pushing phase, the locking mechanism is further configured to remove constraints on the position of the closing mechanism to allow the end effector to open.
27. The stapler of any one of claims 3-26, wherein, in an opening phase subsequent to the staple pushing phase, the first limiting structure is configured to eliminate the second resistance, and the closing mechanism is in the The first resistance force moves away from the end effector to move the staple cartridge assembly and the staple anvil away from each other to open the end effector.
The stapler of claim 27, wherein the first limiting structure includes a first limiting groove and a first locking member, and the second limiting structure includes a second limiting groove and a second locking member And when the first locking member and the second locking member are the same common locking member, in the opening stage, the common locking member is configured to move from the first limiting groove to the second limiting position slot to return to the initial state.
29. The stapler of claim 28, wherein when the locking mechanism further includes a channel slot, the common locking member is configured to move from the first limit slot through the channel slot during the opening phase to the second limit groove.
29. The stapler of claim 29, wherein when the common locking member includes a first end, a second end and a neck and the locking mechanism further includes a locking drive The direction to the second end is the longitudinal direction, the longitudinal direction is perpendicular to the axial direction, and the direction perpendicular to the axial direction and the longitudinal direction is the transverse direction;

During the opening phase, the locking drive structure is further configured to drive the common locking member to move in the longitudinal direction away from the second end portion to move the first end portion to the first limit In addition to the position slot, along with the movement of the first limit slot and the second limit slot, the neck is configured to move from the second limit slot to the first limit slot through the passage slot. Limit slot.
The stapler according to claim 30, wherein the locking driving structure comprises a bearing surface facing the locking member, the bearing surface comprising a first surface, a first slope, When protruding from the surface, the second ramp and the second surface, during the opening phase, the locking drive structure is configured to move relative to the common locking member in the axial direction to cause the second end to move along the The second ramp is moved to the protruding surface to drive the common locking member to move in the longitudinal direction away from the second end, which in turn causes the second end to follow the protruding surface and the second end in turn. moving the first ramp to a side of the first ramp remote from the second ramp to move the common locking member in the longitudinal direction toward the second end;

During the opening phase, the movement of the locking drive structure relative to the common locking member is synchronized with the movement of the first limiting groove and the second limiting groove relative to the common locking member, so that in the During the movement of the second end portion relative to the locking driving structure, the neck portion moves from the first limiting groove to the second limiting groove through the passage groove.
The stapler of claim 26, further comprising:

A cutting device configured to cut the target tissue in a cutting stage subsequent to the staple pushing stage and prior to the opening stage.
32. The stapler of any one of claims 3-32, wherein the first elastic member is located at an end of the locking mechanism proximate the end effector and moves toward the end effector with the closure mechanism be compressed; or,

The first elastic member is located at an end of the locking mechanism remote from the end effector and is stretched as the closure mechanism moves toward the end effector.
The stapler of claim 21, further comprising:

A detachable connection structure configured to connect with the sleeve and the second drive mechanism during the closed phase to move toward the end effector to drive the sleeve as the second drive mechanism moves moving toward the end effector and configured to disengage from the sleeve after the end effector is closed to stop driving the sleeve to move;

The sleeve includes a connection hole penetrating the barrel wall of the sleeve, and one end of the detachable connection structure is detachably inserted into the connection hole so as to be detachably connected to the sleeve;

The first limiting slot, the second limiting slot and the channel slot are arranged opposite to the connecting hole.