CN118340563A

CN118340563A - Needle type combined intra-cavity surgical instrument

Info

Publication number: CN118340563A
Application number: CN202410492625.8A
Authority: CN
Inventors: 毛张凡; 毛航
Original assignee: Renmin Hospital of Wuhan University
Current assignee: Renmin Hospital of Wuhan University
Priority date: 2024-04-22
Filing date: 2024-04-22
Publication date: 2024-07-16

Abstract

The needle type combined intra-cavity surgical instrument of the embodiment of the invention is characterized in that the operating part is arranged on the mounting part, and the core bar is penetrated through the sleeve. Meanwhile, two ends of the core rod and two ends of the sleeve respectively form an inserting end and a mounting end, and the sleeve of the mounting end is fixedly connected with the handle part or the mounting part. In this way, on the one hand, the core rod is extended out of the open end, so that the plug end is connected to the handle part or the operating unit. By utilizing the matching of the core rod and the sleeve, the mechanical strength of the inserted rod part is increased, so that the length of the inserted rod part can be configured to be longer. In the intracavity operation, the inserted bar portion can pass first wound and second wound simultaneously, and then helps operating personnel to assemble and dismantle operation unit or handle portion fast on the grafting end, has simplified the operation degree of difficulty of operation. Meanwhile, bending of the inserted rod part can be avoided. On the other hand, in the movement of the core bar, the movement of the mounting part can be limited by utilizing the cooperation of the sleeve and the mounting part or the limiting part, so that the position of the operating part in the cavity is ensured to be unchanged.

Description

Needle type combined intra-cavity surgical instrument

Technical Field

The invention relates to the field of medical surgical instruments, in particular to a needle type combined intra-cavity surgical instrument.

Background

The endoscopic surgery can be performed by making a plurality of wounds on a human body so as to facilitate the mutual matching of tools such as an endoscope, a lighting device, a surgical knife, a surgical forceps and the like. For example, a wound on one side may facilitate migration of tissue within the cavity by the forceps, exposing the lesion. So that the scalpel can handle from the wound on the other side.

The operation part of the surgical instrument and the plug part detachably connected with the operation part are placed into the cavity through different wounds, so that the size of the corresponding wound of the plug part can be reduced. Further, the postoperative recovery speed is increased. How to simplify the assembling operation of the surgical instrument becomes a problem to be solved.

Disclosure of Invention

In view of this, the embodiment of the invention provides a needle-type combined intra-cavity surgical instrument, in which the insertion end of the insertion rod portion is detachably connected to the driving assembly or the operating assembly, and the core rod is inserted into the sleeve. Therefore, the rigidity and the length of the inserted rod part are improved, so that an operator can assemble and disassemble the surgical instrument in the needle type combined cavity conveniently.

According to a first aspect of an embodiment of the present invention, there is provided a needle-type combined intra-cavity surgical instrument including:

An operation unit including an installation portion and an operation portion provided to the installation portion; and

The driving assembly comprises a handle part and an inserting rod part which are fixedly connected, the inserting rod part comprises a core rod and a sleeve, the sleeve is provided with two opening ends, the core rod is movably arranged in the sleeve in a penetrating mode, the inserting rod part is provided with a first inserting end and a mounting end, the core rod of the first inserting end extends out of the sleeve, the inserting rod part is detachably connected with the operating unit at the first inserting end, the handle part is fixedly connected with the sleeve at the mounting end, and the core rod is pulled or pushed to be driven to perform operation on the operating unit.

Further, the core rod is provided with a first connecting area for driving the operation part to move, the sleeve is provided with a second connecting area for limiting the movement of the installation part, and the first connecting area and the second connecting area are positioned at the first plug-in end;

The core rod can be in telescopic movement in an operation mode, and the first connecting area is close to or far away from the second connecting area along a straight line.

Further, the inserting rod part further comprises a puncture head, the puncture head is provided with a protection cavity, the puncture head is detachably arranged at the first inserting end, and the protection cavity is sleeved on the first connecting area and the second connecting area.

Further, the core bar includes a driving portion at an end of the core bar remote from the operation unit, and the driving portion protrudes from the sleeve;

the first connecting area and the second connecting area are respectively positioned at the end parts of the core rod and the sleeve, and the first connecting area is positioned at the outer side of the sleeve;

The operation unit further comprises a first connecting body, the first connecting body is arranged on the operation portion, a first thread pair is formed by the first connecting area and the first connecting body, and the operation portion is driven by the driving portion to conduct operation through the first thread pair.

Further, the mounting part and the second connecting area form a second thread pair, and the pitch and screwing direction of the threads of the second thread pair are the same as those of the threads of the first thread pair;

The first plug-in end is connected with the operation unit, and the threads of the first thread pair and the threads of the second thread pair are in a screwing state.

Further, the core pin is configured to rotate in synchronization with the sleeve;

the first connecting region is provided with a first external thread, the second connecting region is provided with a second external thread, the first connecting body is provided with a first internal thread, the mounting part is provided with a second internal thread, the first external thread and the first internal thread form the first thread pair, and the second external thread and the second internal thread form the second thread pair;

The operation unit is configured such that the handle portion restricts the linear movement of the core bar relative to the sleeve by the driving portion when the first external screw thread and the second external screw thread are screwed into the first internal screw thread and the second internal screw thread, respectively.

Further, the mounting portion has a first through hole;

The operation unit further comprises a connecting sleeve, the connecting sleeve comprises a plurality of first positioning elastic pieces, the plurality of first positioning elastic pieces have elastic bending amounts towards the outer side of the connecting sleeve, and the second connecting area is positioned on the outer side wall of the sleeve;

The connecting sleeve is arranged in the first through hole, the first connecting area penetrates through the connecting sleeve and is connected with the first connecting body, and the plurality of first positioning elastic pieces are abutted to the second connecting area.

Further, the driving part is provided with a guide groove, the guide groove is provided with two limiting surfaces which are oppositely arranged, and the two limiting surfaces extend along the length direction of the inserted rod part;

The handle part further comprises a locating pin and a limiting part, and the locating pin is arranged on the limiting part and the guide groove;

The driving part drives the core bar to linearly move, the positioning pin moves along the extending directions of the two limiting surfaces, and the positioning pin is abutted with the two limiting surfaces so as to limit the relative rotation of the core bar and the sleeve.

Further, the operation portion includes a first operation arm and a second operation arm;

the inserted link part further comprises a second insulating layer, the second insulating layer is arranged on the outer side face of the sleeve, and the second connecting area is exposed out of the second insulating layer;

the first operation arm, the second operation arm, the sleeve and the core bar are all electric conductors;

the first plug-in end is detachably connected with the operation unit, and the core bar is electrically connected with the first operation arm, the second operation arm and the sleeve.

Further, the plug rod part further comprises a first insulating layer and a second insulating layer, at least part of the first insulating layer is arranged between the core rod and the sleeve, the second insulating layer is arranged on the outer side surface of the sleeve, and the second connecting area is exposed outside the second insulating layer;

The operating part comprises a first operating arm and a second operating arm, the mounting part comprises a sheath body and a third insulating layer, the third insulating layer is arranged on at least part of the area of the outer side face of the sheath body, the second operating arm is arranged on the sheath body, and the core rod drives the first operating arm and the second operating arm to be close to or far away from each other;

The first operation arm, the second operation arm, the sheath body, the sleeve and the core bar are all electric conductors;

the first plug-in end is detachably connected with the operation unit, the first operation arm and the core bar form a first electric path, and the second operation arm, the sheath body and the sleeve form a second electric path.

Further, the drive assembly further comprises:

the toggle piece comprises a first limit column and two second limit columns which are arranged at intervals with the first limit column, wherein the two second limit columns are opposite and are arranged at intervals;

The core bar comprises a first connecting handle and a driving head, the driving head is arranged at the end part of the first connecting handle, the first connecting handle is arranged between two second limit posts, and the driving head is arranged between the first limit posts and the second limit posts;

The handle portion is configured to push the driving head to be close to the operation unit through the first limit posts or pull the driving head to be far away from the operation unit through the two second limit posts, and the first connecting handle slides along the length directions of the two second limit posts.

In a second aspect, embodiments of the present invention also provide another needle-type combined intra-cavity surgical instrument, including:

The handle part comprises a driving part and a limiting part; and

The operation assembly comprises a rod inserting part, an installation part and an operation part arranged on the installation part, wherein the rod inserting part comprises a core rod and a sleeve, the sleeve is provided with two open ends, the core rod is movably arranged on the sleeve in a penetrating mode, the rod inserting part is provided with a second inserting end and an installation end, the core rod of the second inserting end extends out of the sleeve, the sleeve of the installation end is fixedly connected with the installation part, and the second inserting end is detachably connected with the handle part;

the handle portion is configured such that the driving portion drives the operating portion through the stem to perform a surgical operation, and the restricting portion restricts movement of the mounting portion through the sleeve.

Further, the core rod is provided with a first connecting area connected with the driving part, the sleeve is provided with a second connecting area connected with the limiting part, and the first connecting area and the second connecting area are positioned at the second plug-in end;

The core rod of the second plug end extends out of the sleeve and can be in telescopic movement in an operation mode, and the first connecting area is close to or far away from the second connecting area along a straight line.

Further, the first connection region and the driving part form a third thread pair;

the handle portion further includes:

the driving part is driven by the shifting piece to rotate so as to enable threads of the third thread pair to be screwed.

Further, the driving part is a rod body and is provided with a guide groove;

The limit part further includes:

The second limiting piece is provided with a second positioning hole, the limiting part is provided with a second slideway, the driving part is slidably arranged on the second slideway, and the positioning pin extends into the guide groove from the second positioning hole;

The shifting piece is provided with a third through hole, and the second limiting piece is fixedly connected with the shifting piece through the third through hole;

the shifting piece drives the second limiting piece to rotate, so that the second limiting piece drives the driving part to rotate through the locating pin.

Further, the first connecting area comprises a second connecting handle and a clamping connector protruding at the end part of the second connecting handle, and a rotation stopping surface is arranged on the lateral direction of the second connecting handle;

the driving part is provided with a connecting cavity, the connecting cavity comprises a clamping groove and a channel, the clamping connector penetrates through the channel to be clamped in the clamping groove, and the rotation stopping surface is abutted to the side wall of the channel.

Further, the first and second connection regions are located at the ends of the core pin and the sleeve, respectively, and the first connection region is located outside the sleeve;

The limiting part is provided with a second slideway and a fixed opening which is arranged corresponding to the second slideway, and at least part of the driving part is slidably arranged on the second slideway;

The first connecting area penetrates through the fixing opening to be detachably connected with the driving part, and the fixing opening is fixedly connected with the second connecting area.

Further, the limit portion includes:

A first limiting member including a plurality of fixed bodies, the plurality of fixed bodies being operatively moved toward or away from each other;

the fixing bodies are far away from each other to form an avoidance port, the second plug-in end penetrates through the avoidance port to be connected with the driving part, and the fixing bodies are close to each other to form the fixing port.

Further, the fixing body is a second positioning elastic sheet;

The first limiting piece further comprises a barrel body, the barrel body is provided with a first connecting end, a plurality of second positioning elastic pieces are arranged at the first connecting end and incline to the inner side of the barrel body, and a plurality of second positioning elastic pieces are arranged around the center of the barrel body;

the second positioning elastic pieces form the avoiding opening in a free state and mutually lean against each other to form the fixing opening.

Further, the cylinder body is also provided with a second connecting end;

The limit part further includes:

the second slide way is arranged on the guide structure, the second connecting end is fixedly connected with the guide structure, and the cylinder body extends along the extending direction of the second slide way;

The second slide has oppositely facing first and second ports, the first port facing the fixed port and being a first predetermined distance from the fixed port.

Further, the handle portion further includes a second connector;

The limiting part further comprises a third limiting part, the third limiting part is provided with a pressing ring surface and a second through hole, and a fourth thread pair is formed by the third limiting part and the second connector;

The threads of the fourth thread pair are in a screwing state, the pressing ring surface presses the plurality of second positioning elastic pieces to be close to each other so as to form the fixing opening, and the second through hole corresponds to the fixing opening.

Further, the handle portion further includes:

the shifting piece comprises a shifting body and the second connecting body;

The handle part is configured to drive the limiting part to rotate through the dial rotating body so as to enable the operating part to rotate along the circumferential direction of the inserted rod part.

The second plug-in end is detachably connected with the handle part, and the core bar is electrically connected with the first operation arm, the second operation arm and the sleeve.

Further, the limit portion includes:

The fixed port is arranged on the first limiting piece;

The inserted rod part further comprises a first insulating layer and a second insulating layer, the first insulating layer is arranged between the core rod and the sleeve, the second insulating layer is arranged on the outer side surface of the sleeve, and the second connecting area is exposed out of the second insulating layer;

The first operation arm, the second operation arm, the sheath body, the sleeve, the core rod and the first limiting piece are all electric conductors;

The second plug-in end is detachably connected with the handle part, the first operation arm and the core rod form a first electric path, and the second operation arm, the sheath body, the sleeve and the first limiting piece form a second electric path.

Further, the handle portion further includes a shell portion having an accommodating space;

The limit part further includes:

The guide structure comprises a second insulating lining and a second limiting part, the second limiting part is an electric conductor, the second insulating lining comprises a second interval sleeve, a second slideway is formed on the inner wall of the second interval sleeve, the second limiting part is arranged on the shell part, one end of the second limiting part is in threaded connection with the first limiting part and is in an electric connection state, and the other end of the second limiting part is arranged in the accommodating space.

Further, the limiting part further comprises a positioning pin, and the positioning pin is an insulator;

The second interval sleeve is provided with a first positioning hole, and the first positioning hole extends from the second slideway to the outer side wall of the second interval sleeve;

The driving part is a rod body and is provided with a guide groove, the guide groove is provided with two limiting surfaces which are oppositely arranged, and the two limiting surfaces extend along the length direction of the inserted rod part;

the second limiting piece is provided with a containing pore canal and a second positioning hole, and one end of the second positioning hole extends to the containing pore canal;

The second interval sleeve is arranged in the accommodating hole channel, and the positioning pin penetrates through the first positioning hole from the second positioning hole to extend into the guide groove;

The driving part drives the core bar to linearly move, the positioning pin moves along the extending directions of the two limiting surfaces, and the positioning pin is abutted with the two limiting surfaces so as to limit the core bar to rotate relative to the sleeve.

Further, the handle portion further includes:

The shifting piece comprises a shifting body and a second connecting body;

The limiting part further comprises a first limiting part and a third limiting part, the first limiting part comprises a plurality of fixing bodies, the fixing bodies are operably close to or far away from each other, the third limiting part and the shifting part are both insulators, the third limiting part is provided with a containing cavity and a second through hole, the inner wall of the containing cavity is provided with a pressing ring surface, and the third limiting part and the second connecting body form a fourth thread pair;

The threads of the fourth thread pair are in a screwing state, the first limiting part and part of the second limiting part are located in the accommodating cavity, the pressing ring surface presses the plurality of fixing bodies to be close to each other to form the fixing opening, the second through hole corresponds to the fixing opening, and the rotating body is used for driving the limiting part to rotate.

Further, the handle portion further includes:

The driving part comprises a connector, a first connecting handle and a driving head, wherein the first connecting handle is positioned between the driving head and the connector, the connector is connected with one end of the core rod, which is far away from the operating component, the first connecting handle is arranged between two second limiting columns, and the driving head is arranged between the first limiting columns and the second limiting columns;

The handle portion is configured to push the driving head to be close to the operation assembly through the first limit posts or pull the driving head to be far away from the operation assembly through the two second limit posts, and the first connecting handle slides along the length directions of the two second limit posts.

In a third aspect, embodiments of the present invention further provide a further needle-type combined intra-cavity surgical instrument, the needle-type combined intra-cavity surgical instrument comprising:

an operation unit including a mounting portion and a first operation arm provided to the mounting portion; and

The driving assembly comprises a handle part and an inserting rod part which are fixedly connected, the inserting rod part is provided with a first inserting end, the first inserting end is located at one end, away from the handle part, of the inserting rod part, the first inserting end is detachably connected with the operating unit, and the handle part drives the first operating arm to perform operation through the inserting rod part.

In a fourth aspect, embodiments of the present invention further provide a further needle-type combined intra-cavity surgical instrument, the needle-type combined intra-cavity surgical instrument comprising:

A handle portion; and

The operation assembly comprises a plug rod part and a first operation arm arranged on the plug rod part, the plug rod part is provided with a second plug end, the second plug end is positioned at one end of the plug rod part far away from the first operation arm, and the second plug end is detachably connected with the handle part;

the handle portion is configured to drive the first operation arm to perform a surgical operation through the plunger portion.

The needle type combined intra-cavity surgical instrument of the embodiment of the invention is characterized in that the operating part is arranged on the mounting part, and the core bar is penetrated through the sleeve. Meanwhile, two ends of the core rod and two ends of the sleeve respectively form an inserting end and a mounting end, and the sleeve of the mounting end is fixedly connected with the handle part or the mounting part. In this way, on the one hand, the core rod is extended out of the open end, so that the plug end is connected to the handle part or the operating unit. By utilizing the matching of the core rod and the sleeve, the mechanical strength of the inserted rod part is increased, so that the length of the inserted rod part can be configured to be longer. In the intracavity operation, the inserted bar portion can pass first wound and second wound simultaneously, and then helps operating personnel to assemble and dismantle operation unit or handle portion fast on the grafting end, has simplified the operation degree of difficulty of operation. Meanwhile, bending of the inserted rod part can be avoided. On the other hand, the sleeve is sleeved on the outer side of the core rod, and when the driving part drives the core rod to move, the bending of the core rod can be avoided. The driving assembly can drive the operation part to move by pulling or pushing the core bar, so that the driving mode of the operation part is increased. In the movement of the core bar, the sleeve is matched with the mounting part or the limiting part, so that the movement of the mounting part can be limited, and the position of the operating part in the cavity is ensured to be unchanged.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a surgical instrument in a needle combination cavity according to an embodiment of the present invention;

FIG. 2 is an exploded view of a first embodiment of the needle combination intra-cavity surgical instrument of the present invention;

FIG. 3 is an exploded view of a needle combination intra-cavity surgical instrument according to a second embodiment of the present invention;

FIG. 4 is a schematic illustration of the operation of a needle combination intra-cavity surgical instrument according to a first embodiment of the present invention;

FIG. 5 is a schematic illustration of the operation of a needle combination intra-cavity surgical instrument according to a second embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of an operational assembly of an embodiment of the present invention in some implementations;

FIG. 7 is a schematic cross-sectional view of an operational assembly of an embodiment of the present invention in other implementations;

FIG. 8 is a schematic cross-sectional view of an operational assembly of an embodiment of the present invention in still other implementations;

FIG. 9 is an exploded schematic view of a drive assembly of an embodiment of the present invention in some implementations;

FIG. 10 is a schematic cross-sectional view of a drive assembly of an embodiment of the present invention in some implementations;

FIG. 11 is a schematic view of the structure of a connecting sleeve according to an embodiment of the present invention;

FIG. 12 is an exploded view of a drive assembly according to an embodiment of the present invention in further embodiments;

FIG. 13 is a schematic cross-sectional view of a drive assembly of an embodiment of the invention in other implementations;

FIG. 14 is a schematic cross-sectional view of a drive assembly of an embodiment of the invention in yet other implementations;

FIG. 15 is a schematic cross-sectional view of a drive assembly in still other implementations of an embodiment of the invention;

FIG. 16 is a schematic cross-sectional view at A-A of FIG. 15;

Fig. 17 is a schematic structural view of a driving section of an embodiment of the present invention;

FIG. 18 is a schematic view of a first stop member according to an embodiment of the present invention;

FIG. 19 is a schematic cross-sectional view of the plunger portion and handle portion of an embodiment of the present invention;

FIG. 20 is a schematic cross-sectional view of an operational assembly of an embodiment of the present invention in still other implementations.

Reference numerals illustrate:

1-a drive assembly;

11-a driving part; 111-guide grooves; 112-limit surface; 113-a connector; 114-a first connection handle; 115-a drive head; 116-connecting the cavities; 1161-a clamping groove; 1162-channel;

1171-a first stop surface; 1712-a second stop surface;

1181-spherical cap surface; 1812-a cambered surface region;

191-a first conductive ring; 192-a second conductive ring; 193-conductive arms;

12-a limiting part;

121-a first limiting piece; 1211-a fixed port; 1212-a stationary body; 1213-an avoidance port; 1214-cylinder; 1215-a first connection; 1216-a second connection; 1217-receiving aperture; 1218-a second locating hole;

122-a second stop; 1221-a second slide;

123-a third limiting piece; 1231-pressing the annulus; 1232-a second through hole; 1233-receiving cavity;

124-a second insulating liner; 1241-a second spacer sleeve; 1242-first positioning holes;

125-guiding structure;

1261-tub bottom; 1262-sidewall portions;

13-locating pins;

14-a toggle piece; 141-a first limit column; 142-a second limit column; 143-a drive slot;

15-a dial; 151-a second linker; 152-a dial body; 153-third through hole;

16-shell portion; 161-accommodating space; 162-fourth through holes;

2-an operation unit;

21-a mounting part; 211-a first through hole; 212-sheath; 2121-arms; 2122-body;

22-an operation part; 221-a first operating arm; 222-a second operating arm;

23-a first connector;

24-connecting the sleeve; 241-first positioning spring piece; 242-fixing the cylinder; 2421-avoiding holes;

25-a first slideway;

26-a first insulating liner; 261-a first spacer sleeve;

3-a rod inserting part;

31-core bar;

32-a sleeve;

33-a first connection region; 331-a second connection handle; 332-clamping joint; 333-anti-rotation surface;

34-a second connection region;

35-piercing head;

36-a protective cavity; 361-a third connection region; 362-avoidance lumen;

41 a-a first mating end; 41 b-a second plug end; 42-mounting end;

51-a first insulating layer; 52-a second insulating layer; 53-a third insulating layer;

6-a handle portion;

7-an operating assembly;

a1-a first thread pair; a2-a second thread pair; a3-a third thread pair; a4-a fourth thread pair;

B1-a first hinge hole; b2-a second hinge hole; b3-a third hinge hole; b4-fourth hinge holes; b5-fifth hinge holes.

Detailed Description

The present invention is described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. The present invention will be fully understood by those skilled in the art without the details described herein. Well-known methods, procedures, flows, components and circuits have not been described in detail so as not to obscure the nature of the invention.

Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.

Unless the context clearly requires otherwise, the words "comprise," "comprising," and the like throughout the application are to be construed as including but not being exclusive or exhaustive; that is, it is the meaning of "including but not limited to".

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, as they may be fixed, removable, or integral, for example; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Spatially relative terms, such as "inner," "outer," "lower," "upper," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 is a schematic view of the structure of a needle-type combined intra-cavity surgical instrument of the present embodiment. The needle type combined intracavity surgical instrument in the figure comprises an operation unit 2, a handle part 6 and a plunger part 3 connecting the operation unit 2 and the handle part 6. Meanwhile, the needle type combined intracavity surgical instrument is in an assembled state, and the handle part 6 can drive the operation unit 2 through the inserted rod part 3 to perform operation.

Fig. 2 is an exploded view of the surgical instrument in the needle-type combined cavity in the first embodiment. Fig. 3 is an exploded view of a needle-type combination intra-cavity surgical instrument in a second embodiment. The surgical instruments in the needle type combined die cavity in fig. 2 and 3 are all in a split state, and the inserted rod part 3 is provided with an inserted end. The mating ends are shown as a first mating end 41a and a second mating end 41b. The plunger portion 3 and the handle portion 6 in the first embodiment constitute the drive assembly 1. The drive assembly 1 is detachably connected to the operating unit 2 via a first plug end 41a at the plug shaft portion 3 to form a needle-type combination intracavity surgical instrument in an assembled state. The plunger portion 3 and the operation unit 2 in the second embodiment constitute an operation assembly 7. The operating assembly 7 is detachably connected to the handle portion 6 through a second insertion end 41b located at the insertion rod portion 3 to form a needle-type combination intracavity surgical instrument in an assembled state.

Fig. 4 is a schematic view showing the operation of the needle-type combined intra-cavity surgical instrument according to the first embodiment. The states Ia, ib, ic, id and ie are each different stages of endoluminal surgery.

In some embodiments, as shown in fig. 2 and 4, in state ia, the operator makes a first and second incision in the skin using the puncture cannula 32 and the first puncture needle, respectively. The first incision has a size that is larger than the size of the second incision. Meanwhile, the external dimensions of the operation unit 2 are smaller than the first wound and larger than the second wound, and the operation unit 2 can be put into the cavity from the first wound. In the state ib, the first puncture needle is pulled out, the insertion rod portion 3 is inserted into the cavity through the second wound, the puncture head 35 is sleeved on the first insertion end 41a of the insertion rod portion 3, and the puncture head 35 is used for protecting the first insertion end 41a. In state ic, the operator adjusts the angle of the puncture cannula 32 such that the tail of the puncture cannula 32 is directed towards the second incision, such that the first insertion end 41a protrudes from the head of the puncture cannula 32. In this form, the operator can detach the puncture head 35 from the first insertion end 41a, and then set the operation unit 2 on the first insertion end 41a. In this process, both ends of the plunger 3 are located outside the skin, so that an operator can hold the handle of the driving assembly 1 with one hand and hold the operating unit 2 with the other hand, so as to assemble the driving assembly 1 and the operating assembly 7 together. In the state id, the operator pulls the operation unit 2 from outside the first wound into the cavity, thereby performing the surgical operation. In state ie, the operator again pulls the operating unit 2 out of the puncture cannula 32, so that the operating unit 2 is detached from the first insertion end 41a. Finally, the plunger 3 is pulled out of the second incision.

Thus, in the above process, the size of the second wound is reduced and the recovery speed of the patient operation is improved by using the detachable plunger portion 3 and the operation unit 2.

Fig. 5 is a schematic view showing the operation of the needle-type combined intra-cavity surgical instrument according to the second embodiment. The state IIa, the state IIb, the state IIc, the state IId and the state IIe in the figure are respectively different stages of the endoluminal operation.

In other embodiments, as shown in fig. 3 and 5, in state IIa, the operator makes a first and second incision in the skin using the cannula 32 and the second needle, respectively. The first incision is sized larger than the second incision, and the second puncture needle is configured to have a length that is larger than a linear distance between the first incision and the second incision. In state IIb, the operator adjusts the angle of the puncture cannula 32 and the second puncture needle and causes the tail of the second puncture needle to penetrate the tail of the puncture cannula 32. Thus, the tail of the second lancet extends outside the skin through the lancet cannula 32. Then, the insertion rod portion 3 is inserted into the second puncture needle from the tail portion thereof until the second insertion end 41b extends from the head portion of the second puncture needle to the outside of the skin. In the state ii c, the second puncture needle is pulled out of the second wound, in which form the operating part 22 and the mounting part 21 of the operating assembly 7 are located outside the skin, i.e. the operating part 22 and the mounting part 21 do not enter inside the puncture cannula 32. At the same time, the second plug end 41b of the plug-in lever part 3 is also located outside the skin. The operator can grasp the grip of the handle portion 6 with one hand and grasp the operation unit 2 with the other hand to assemble the second socket end 41b with the handle portion 6. In state ii d, the operator pulls the operating unit 2 from outside the first incision into the cavity, thereby performing the surgical operation. In state ii e, the operator again extends the operating portion 22 and the mounting portion 21 from the puncture cannula 32, thereby detaching the handle portion 6 from the second insertion end 41 b. Finally, the plunger 3 is pulled out of the first incision.

Therefore, in the process, the detachable inserted rod part 3 and the handle part 6 are utilized, the size of the second wound is reduced, and the recovery speed of the operation of the patient is improved.

Fig. 6, 7 and 8 are schematic cross-sectional views of the handling assembly 7 in different embodiments. The plunger 3 includes a core rod 31 and a sleeve 32. The operating unit 7 and the plunger 3 of the needle-type combined intra-cavity surgical instrument of the first embodiment may be detachably connected in the manner shown in fig. 6 or 7. The mounting portion 21, the operating portion 22, and the plunger portion 3 of the needle-type combined intra-cavity surgical instrument of the second embodiment may be fixedly connected by the manner shown in fig. 8.

In some embodiments, as shown in fig. 8, the plunger 3 includes a mounting end 42. The sleeve 32 of the mounting end 42 may be welded to the mounting portion 21 or the sleeve 32 may be formed with the mounting portion 21 by an integral molding process. Meanwhile, the core rod 31 and the operating portion 22 of the mounting end 42 may be manufactured by a welding process or an integral molding process, or the core rod 31 may be fixedly connected to the first operating arm 221 through the first connector 23. Further, the connection strength of the mounting end 42 and the mounting portion 21 is increased.

Fig. 9 is an exploded schematic view of the drive assembly 1 of the first embodiment. Fig. 10 is a schematic cross-sectional view of the drive assembly 1 of the first embodiment.

In some embodiments, as shown in fig. 1-2, the needle-type combination intra-cavity surgical instrument of the present example includes a drive assembly 1 and an operating unit 2.

Referring still further to fig. 6 to 7, the operation unit 2 includes a mounting portion 21 and an operation portion 22 provided to the mounting portion 21. The operation section 22 is movable relative to the mounting section 21 to perform a surgical operation on the biological tissue.

Referring still further to fig. 9 and 10, the drive assembly 1 includes a handle portion 6 and a plunger portion 3. The plunger 3 includes a core rod 31 and a sleeve 32, the sleeve 32 having two open ends, the core rod 31 being movably disposed through the sleeve 32. The plug portion 3 has a first plug end 41a and a mounting end 42, that is, both ends of the core rod 31 and both ends of the sleeve 32 form the first plug end 41a and the mounting end 42, respectively. The core rod 31 of the first plugging end 41a extends out from the sleeve 32, the plugging rod portion 3 is detachably connected with the operation unit 2 at the first plugging end 41a, the handle portion 6 is fixedly connected with the sleeve 32 at the mounting end 42, and the core rod 31 is pulled or pushed to drive the operation unit 2 to perform operation.

To sum up, in the needle-type combined intra-cavity surgical instrument of the present embodiment, the operation portion 22 is provided to the mounting portion 21, and the core bar 31 is inserted into the sleeve 32. Meanwhile, both ends of the core bar 31 and both ends of the sleeve 32 form a first insertion end 41a and a mounting end 42, respectively, and the sleeve 32 of the mounting end 42 is fixedly connected with the handle portion 6. Thereby, on the one hand, the core bar 31 is protruded from the opening end so that the first plug end 41a is connected with the operation unit 2. With the cooperation of the core rod 31 and the sleeve 32, the mechanical strength of the plunger 3 is increased, so that the length of the plunger 3 can be configured longer. In the intracavity operation, the inserted link portion 3 can pass through the first wound and the second wound simultaneously, and then help the operating personnel to assemble and disassemble the operation unit 2 on the first insertion end 41a, simplifying the operation difficulty of the operation. Meanwhile, bending of the inserted rod part 3 can be avoided. On the other hand, the sleeve 32 is sleeved on the outer side of the core rod 31, so that bending of the core rod 31 can be reduced or even avoided when the driving part 11 drives the core rod 31 to move. So that the driving assembly 1 can drive the operation part 22 to move by pulling or pushing the core bar 31, and the driving mode of the operation part 22 is increased. On the other hand, in the movement of the core bar 31, the fitting of the sleeve 32 to the mounting portion 21 can also restrict the movement of the mounting portion 21, ensuring that the position of the operation portion 22 in the cavity is unchanged.

Specifically, the sleeve 32 and the core rod 31 in the present embodiment may be made of stainless steel, cobalt alloy or titanium alloy, so that the plunger 3 has a better bending strength in the radial direction and a better tensile strength and compressive strength in the axial direction. At the same time, the inserted rod part 3 can have certain electric conductivity. The sleeve 32 has a bore through which the core rod 31 is inserted. When the core rod 31 slides along the hole, most of the area of the core rod 31 is located inside the sleeve 32, so that the sleeve 32 can provide support for the core rod 31 and prevent the core rod 31 from bending and deforming. Further, after the plunger 3 is assembled with the operation unit 2, the driving assembly 1 drives the operation portion 22 to move by pushing the core bar 31, or drives the operation portion 22 to move by pulling the core bar 31. In this process, both ends of the core rod 31 may remain or remain substantially in a straight-line extended configuration when compressed or pulled. Furthermore, as shown in states ic and ie in fig. 4, in this form, the operator may also pass the first insertion end 41a of the insertion rod portion 3 through the first wound, and when the length of the insertion rod portion 3 is longer, the matching form of the core rod 31 and the sleeve 32 in this embodiment may reduce or even avoid bending of the insertion rod portion 3, which is helpful for the operator to perform the operation and avoid bending of the insertion rod portion 3 after the operation.

Alternatively, the operating unit 2 includes, but is not limited to, a scalpel component, a needle holder component, a suction head component, a forceps component, a scissors component, or a forceps component, etc. Those skilled in the art can choose according to the actual operation of the procedure. As shown in fig. 4 by the continuous switching of the three operation steps described above, a plurality of operation units 2 can be rapidly switched during one operation to accommodate the need of the endoluminal operation at different stages. Therefore, the operation difficulty of operators is simplified, and the operation time is reduced.

Taking the forceps member as an example, the first operation arm 221 and the second operation arm 222 are configured as two forceps heads, so that the biological tissue is gripped, pulled, hemostasis, dressing, or the like by the mutual approach of the two forceps heads. Taking the scissor component as an example, the first operation arm 221 and the second operation arm 222 are configured as two scissor arms, so that the operations of shearing biological tissues, cutting a suture line or cutting a dressing and the like are realized through the mutual approaching of the two scissor arms. Taking the example of a needle holder component, the needle holder component may be used to hold a suture needle and assist in tying the suture. Taking a suction head part as an example, the suction head part can be started under the drive of the drive assembly 1, so that the suction head generates negative pressure. Further, blood, liquid or flushing liquid in the surgical field is sucked out to keep the surgical field clear. The surgical field refers to the range of vision reached during surgery. Taking the tweezer part as an example, two tips of the tweezer are close to each other under the driving of the driving assembly 1, so as to realize the effects of clamping or assisting in dissection and the like.

Alternatively, as shown in fig. 9 and 10, the driving assembly 1 in this embodiment includes a dial 15. The stopper 12 includes a first stopper 121, a second stopper 122, and a third stopper 123. The first stopper 121 includes a barrel including a barrel bottom 1261 and a sidewall portion 1262 surrounding the barrel bottom 1261. The bottom of the tub bottom 1261 is provided with a via hole. The barrel bottom 1261 is fixedly connected to the sleeve 32 of the mounting end 42, and the bore of the sleeve 32 corresponds to the via. The first and second stoppers 121 and 122 may be made of the same material as the sleeve 32 (e.g., stainless steel). The side wall portion 1262 is threadedly coupled to the second stop 122. The third limiting member 123 is in threaded connection with the rotation shifting member 15 and sleeved outside the first limiting member 121.

Specifically, the first limiting member 121 in the present embodiment may be configured to be welded to the sleeve 32, or manufactured through an integral molding process. Thereby, the connection strength of the plunger portion 3 with the driving assembly 1 is increased.

In some embodiments, as shown in fig. 6-7, the core bar 31 has a first connection region 33 that moves the operating portion 22, and the sleeve 32 has a second connection region 34 that limits movement of the mounting portion 21. The first connection region 33 and the second connection region 34 are located at the first mating end 41a.

The stem 31 of the first mating end 41a extends from the sleeve 32 and is operable to move telescopically with the first connection region 33 being linearly adjacent to or remote from the second connection region 34.

Specifically, when the first connection region 33 is close to the second connection region 34 in this embodiment, the first connection region 33 is located outside the sleeve 32, and the first connection region 33 is spaced apart from the second connection region 34 by a first distance. When the first connection region 33 is away from the second connection region 34, the first connection region 33 is a second distance from the second connection region 34. The difference between the first distance and the second distance in this embodiment is the movement stroke of the core rod 31. The plunger 3 drives the operation unit 22 to perform a surgical operation by using the movement stroke.

In some embodiments, as shown in fig. 4 in states ib and lc and fig. 6, the plunger 3 further includes a piercing tip 35. The puncture head 35 is provided with a protection cavity 36, the puncture head 35 is detachably arranged at the first plug-in end 41a, and the protection cavity 36 is sleeved on the first connection area 33 and the second connection area 34.

The head of the puncture head 35 in this embodiment has a tip, and when the puncture head 35 is disposed at the first insertion end 41a, an operator can insert the puncture head 35 into the cavity through the second wound after pulling out the first puncture needle. Or based on the rigidity of the insertion rod 3, the puncture head 35 is directly inserted into the cavity of the patient, so as to reduce the operation flow.

Meanwhile, the shielding cavity 36 may also protect the first and second connection regions 33 and 34 from contamination during the above process. For example, during lancing, blood or interstitial fluid within the skin and cavity may contact the plunger 3, and the shielded cavity 36 may prevent contamination of the first and second connection regions 33, 34. Particularly when the needle-type combination intra-cavity surgical instrument is used to perform an electrocoagulation operation, the core bar 31 or the sleeve 32 may form a passage with the operating assembly 7. In this form, contamination of the first connection region 33 or the second connection region 34 with body fluid may cause disconnection or short-circuiting of the surgical instrument in the needle assembly cavity.

Preferably, the guard chamber 36 includes a third connecting region 361 and a relief chamber 362. The third connecting region 361 is used for connecting with the second connecting region 34 so that the puncture head 35 is stably mounted on the first insertion end 41 a. For example, third connecting region 361 is internally threaded and second connecting region 34 is externally threaded. When the third connecting region 361 and the second connecting region 34 are screwed together, the core rod 31 of the first plug end 41a is located in the avoiding cavity 362. The length of the avoiding cavity 362 is configured to be greater than the second distance, so as to avoid interference between the core rod 31 and the piercing head 35 caused by movement of the core rod 31 during insertion of the plunger 3 into the cavity.

In some embodiments, as shown in fig. 9, the core bar 31 includes a driving portion 11. The driving portion 11 is located at an end of the stem 31 remote from the operation unit 2, and the driving portion 11 protrudes from the sleeve 32.

Still further referring to FIG. 6, the first and second connection regions 33 and 34 are located at the ends of the core pin 31 and the sleeve 32, respectively, and the first connection region 33 is located outside the sleeve 32.

The operating unit 2 further comprises a first connecting body 23. The first connecting body 23 is disposed on the operation portion 22, the first connecting region 33 and the first connecting body 23 form a first screw pair A1, and the driving portion 11 drives the operation portion 22 to perform a surgical operation through the first screw pair A1.

The first connection region 33 in this embodiment is fixedly connected to the first connection body 23 by a rotational movement. At the same time, the first connecting area 33 moves along a straight line to drive the first connecting body 23 to slide along the first slideway 25. This prevents the core bar 31 and the first connecting body 23 from being separated from each other when the core bar 31 drives the operation portion 22.

In some embodiments, as shown in fig. 6, the mounting portion 21 forms a second thread pair A2 with the second connection region 34. The pitch and the screwing direction of the threads of the second thread pair A2 are the same as those of the first thread pair A1.

When the first mating end 41a is in the connected state with the operation unit 2, the threads of the first thread pair A1 and the threads of the second thread pair A2 are both in the screwed state.

Preferably, the threads of the first thread pair A1 and the second thread pair A2 in the present embodiment are cylindrical threads, and the pitches of the first thread pair A1 and the second thread pair A2 may be simultaneously configured to be 0.25, 0.4 or other values. Therefore, when the threads of the first thread pair A1 are screwed, the threads of the second thread pair A2 can be screwed together at the same time, and the interference between the rotation motion of the core rod 31 and the rotation motion of the sleeve 32 in the process is avoided. At the same time, the threaded connection can also increase the contact area between the operating part 22 and the core bar 31 and the contact area between the sleeve 32 and the mounting part 21, which is helpful for the surgical instruments in the needle type combined cavity to form an electric path for performing the electrocoagulation operation.

In some embodiments, as shown in FIG. 9, the core pin 31 is configured to rotate in synchronization with the sleeve 32.

Still further referring to fig. 6, the first connection region 33 has a first external thread and the second connection region 34 has a second external thread. The first connecting body 23 has a first internal thread, the mounting portion 21 has a second internal thread, the first external thread and the first internal thread form a first thread pair A1, and the second external thread and the second internal thread form a second thread pair A2.

The operation unit 2 is configured such that the handle portion 6 restricts the linear movement of the stem 31 relative to the sleeve 32 by the driving portion 11 when the first external screw and the second external screw are screwed into the first internal screw and the second internal screw, respectively.

In this embodiment, the core rod 31 and the sleeve 32 rotate synchronously, and in this form, the operator can further utilize the toggle member 14 (i.e. the handle) of the driving assembly 1 to limit the linear motion of the driving portion 11, so that the first connection region 33 and the second connection region 34 can be screwed into the first internal thread and the second internal thread at the same speed, and the stability of the threaded connection is ensured.

In other embodiments, as shown in fig. 7, the mounting portion 21 has a first through hole 211. The operating unit 2 further comprises a connecting sleeve 24. The connecting sleeve 24 includes a plurality of first positioning spring pieces 241, the plurality of first positioning spring pieces 241 having an elastic bending amount toward the outer side of the connecting sleeve 24, and the second connecting region 34 is located at the outer side wall of the sleeve 32. The connecting sleeve 24 is disposed in the first through hole 211, the first connecting region 33 passes through the connecting sleeve 24 and is connected with the first connecting body 23, and the plurality of first positioning elastic pieces 241 are abutted with the second connecting region 34.

The first positioning spring 241 in the present embodiment generates a friction force when contacting the second connection region 34, so that the first positioning spring 241 can limit the axial movement of the sleeve 32 along the first through hole 211. The connection sleeve 24 may be an electrical conductor, and the second connection region 34 is electrically connected to the mounting portion 21 through the connection sleeve 24.

Specifically, as shown in fig. 9, the operator may extend the first connection region 33 from the sleeve 32, and simultaneously rotate the core bar 31 through the dial 15, so that the threads of the first thread pair A1 are screwed together. During this process, the second connection region 34 is gradually moved toward the first connection body 23, so that the second connection region 34 is pulled into the connection sleeve 24. The connection of the first plug-in connection 41a to the operating assembly 7 is thereby simplified. In contrast, when the thread of the first thread pair A1 is screwed out, the core rod 31 can also drive the sleeve 32 away from the first connecting body 23, so that the second connecting region 34 is pulled out of the connecting sleeve 24.

Fig. 11 is a schematic structural view of the connecting sleeve 24 of the present embodiment.

Further, as shown in fig. 11, the connecting sleeve 24 includes a fixing cylinder 242, and the fixing cylinder 242 is provided with a relief hole 2421. The first positioning elastic pieces 241 are disposed in the avoiding holes 2421, and the plurality of first positioning elastic pieces 241 are uniformly distributed along the circumferential direction of the fixed cylinder 242. The first positioning spring piece 241 is bent inward of the fixed cylinder 242 in a free state. The connecting sleeve 24 is engaged with the first through hole 211 via the fixing tube 242. Meanwhile, the first positioning spring piece 241 has a first positioning end contacting the second connection region 34, and the first positioning end is bent to the outside of the fixing cylinder 242 in the axial cross-sectional direction of the fixing cylinder 242. The second connecting region 34 may be configured as a cylindrical surface, and the plurality of first positioning ends in the present embodiment may be adapted to the shape of the second connecting region 34, so as to ensure that the connecting sleeve 24 has a sufficient contact area with the second connecting region 34.

In some embodiments, as shown in fig. 9 to 10, the driving portion 11 is provided with a guide groove 111, and the guide groove 111 has two limiting surfaces 112 disposed opposite to each other, and the two limiting surfaces 112 extend along the length direction of the plunger portion 3. The handle portion 6 further comprises a locating pin 13 and a limiting portion 12. The positioning pin 13 is provided in the stopper portion 12 and the guide groove 111.

In the process that the driving portion 11 drives the core rod 31 to move along the straight line, the positioning pin 13 moves along the extending direction of the two limiting surfaces 112, and the positioning pin 13 abuts against the two limiting surfaces 112 to limit the core rod 31 and the sleeve 32 to rotate relatively.

Specifically, the positioning pin 13 in the present embodiment can limit the movement stroke of the driving portion 11, as shown in fig. 10, in this form, the positioning pin 13 is located at an end of the guide groove 111 away from the operation unit 2, that is, the first connection region 33 and the second connection region 34 are spaced apart by the second distance. When the first connection region 33 and the second connection region 34 are spaced apart by the first distance, the positioning pin 13 moves to an end of the guide groove 111 near the operation unit 2.

On the other hand, the positioning pin 13 is in an abutting state with the two limiting surfaces 112, so that the core rod 31 can be prevented from rotating relative to the sleeve 32. Thereby, the threads of the first thread pair A1 and the threads of the second thread pair A2 can be screwed together.

On the other hand, when the operator drives the operation portion 22 to move (for example, a clip head member), the positioning pin 13 can prevent the two clip heads from rotating in the circumferential direction of the insertion rod portion 3 when gripping human tissue. Thus, the movement accuracy of the operation portion 22 is ensured.

Fig. 19 is a schematic cross-sectional view of the plunger portion 3 and the handle portion 6 of the present embodiment. Fig. 20 is a schematic cross-sectional view of the handling assembly 7 of the present example in still other implementations.

In some embodiments, as shown in fig. 6, 10, 19, and 20, the operating portion 22 includes a first operating arm 221 and a second operating arm 222. The plunger 3 further includes a second insulating layer 52, the second insulating layer 52 is disposed on the outer side surface of the sleeve 32, and the second connection region 34 is exposed outside the second insulating layer 52. The first operation arm 221, the second operation arm 222, the sleeve 32, and the stem 31 are all electric conductors.

The first plugging end 41a is detachably connected to the operation unit 2, and the core bar 31 is electrically connected to the first operation arm 221, the second operation arm 222, and the sleeve 32.

The needle-type combined intra-cavity surgical instrument in the embodiment can be used as a monopolar electrocoagulation instrument. The ground plate is provided on the operating table, and the first operating arm 221 and the second operating arm 222 form a path with the ground plate through the biological tissue therebetween, so that the electric coagulation current applied to the first operating arm 221 and the second operating arm 222 can reduce the wound bleeding of the patient. In this process, the second insulating layer 52 can prevent the current on the sleeve 32 from passing to other locations, which in turn can cause the voltage on the first operating arm 221 and the second operating arm 222 to decrease.

Specifically, as shown in fig. 20, the first operating arm 221 is connected to the core rod 31 through the first connector 23, the second operating arm 222 is rotatably connected to the sheath 212, the sheath 212 is also a conductive member, and the third insulating layer 53 is disposed on the outer side surface of the sheath 212. While the first operation arm 221 and the second operation arm 222 are rotatably connected and the first operation arm 221 and the second operation arm 222 are electrically contacted at the connection position of the two, the stem 31 is electrically contacted with the sleeve 32.

Alternatively, as shown in fig. 10 and 19, the handle portion 6 in the present embodiment includes a conductive arm 193 and a first conductive ring 191 connected to the conductive arm 193, or the handle portion 6 includes a conductive arm 193 and a second conductive ring 192 connected to the conductive arm 193.

When the handle portion 6 is provided with the first conductive ring 191, the second limiting member 122 rotatably penetrates through the first conductive ring 191 and is electrically connected with the first conductive ring 191. The second limiting member 122 may be electrically connected to both the core rod 31 and the sleeve 32. One end of the conductive arm 193 is connected to the first conductive ring 191 (as shown in fig. 19), and the other end thereof protrudes outside the shell portion 16 through the receiving space 161 so that an electric coagulation current is fed to the sleeve 32 through the conductive arm 193 and the first conductive ring 191.

When the second conductive ring 192 is provided on the handle portion 6, the second conductive ring 192 may be fitted over the first connection handle 114, and the first connection handle 114 is located at the driving portion 11. First coupling handle 114 may rotate within second conductive ring 192 and move linearly within second conductive ring 192 to ensure that first coupling handle 114 is in electrical contact with second conductive ring 192. After the second plugging end 41b is detachably connected to the handle portion 6, the driving portion 11 may be electrically connected to the second limiting member 122, the first limiting member 121 and the sleeve 32 at the same time. While one end of the conductive arm 193 is connected to the second conductive ring 192 and the other end thereof protrudes outside the shell portion 16 through the receiving space 161 so that the electric coagulation current is fed to the stem 31 through the conductive arm 193 and the second conductive ring 192.

In some embodiments, as shown in fig. 6,7, 9 and 10, the plug portion 3 further includes a first insulating layer 51 and a second insulating layer 52, at least a portion of the first insulating layer 51 is disposed between the core pin 31 and the sleeve 32, the second insulating layer 52 is disposed on an outer side of the sleeve 32, and the second connection region 34 is exposed outside the second insulating layer 52.

The operation section 22 includes a first operation arm 221 and a second operation arm 222. The mounting portion 21 includes a sheath 212 and a third insulating layer 53, the third insulating layer 53 is disposed on at least a partial area of an outer side surface of the sheath 212, the second operating arm 222 is disposed on the sheath 212, and the core rod 31 drives the first operating arm 221 and the second operating arm 222 to approach or separate from each other. Meanwhile, the first limiting member 121, the second limiting member 122, the first operating arm 221, the second operating arm 222, the sheath 212, the sleeve 32, the first connecting body 23 and the core pin 31 are all electric conductors.

When the first plug end 41a is detachably connected to the operation unit 2, the first operation arm 221, the first connection body 23, and the stem 31 form a first electrical path. The second operating arm 222, the sheath 212, the sleeve 32, the first stopper 121, and the second stopper 122 form a second electrical path.

The needle-type combined intra-cavity surgical instrument in this embodiment may be used as a bipolar coagulation instrument, and after the first operation arm 221 and the second operation arm 222 clamp biological tissue, the first operation arm 221 and the second operation arm 222 are conducted through the biological tissue to apply an electric coagulation current to the clamped biological tissue.

Specifically, as shown in fig. 6 and 7, the operation unit 2 further includes a first insulating liner 26, and the first insulating liner 26 includes a first spacer sleeve 261. Sheath 212 includes arms 2121 and body 2122. The body 2122 has a receiving recess for receiving the first spacer 261, and an inner wall of the first spacer 261 forms the first slide 25. The core bar 31 is electrically connected to the first operating arm 221 through the first connector 23. In this form, the first connector 23 is in contact with the first spacer 261, and the first connector 23 is prevented from directly communicating with the sheath 212 by the first insulating liner 26. The first insulating layer 51 is disposed on the outer side surface of the core rod 31, such that the first connection region 33 is exposed outside the first insulating layer 51. Or the first insulating layer 51 may be directly disposed on the inner side of the sleeve 32.

The arm 2121 has a first hinge hole B1, the first connecting body 23 has a second hinge hole B2, the second operating arm 222 has a third hinge hole B3 and a fifth hinge hole B5, and the first operating arm 221 has a fourth hinge hole B4 and a fifth hinge hole B5.

The first operation arm 221 and the second operation arm 222 are rotatably connected through two fifth hinge holes B5, and the first hinge hole B1 and the third hinge hole B3 are rotatably connected, and the second hinge hole B2 and the fourth hinge hole B4 are rotatably connected. Wherein the two fifth hinge holes B5 have a large gap with the rotation shaft provided therein. Thereby, the linear movement of the first link 23 can be converted into the opening or closing movement of the first operation arm 221 and the second operation arm 222. The operation portion 22 further includes an insulating spacer disposed at a connection position of the first operation arm 221 and the second operation arm 222 to prevent the first operation arm 221 and the second operation arm 222 from being conducted at the connection position.

Fig. 12 is an exploded schematic view of the drive assembly 1 in the second embodiment. Fig. 13 and 14 are schematic cross-sectional views of the drive assembly 1 in the second embodiment.

In some embodiments, as shown in fig. 9, the drive assembly 1 further comprises a toggle member 14. The toggle member 14 in this embodiment is similar in form to the toggle member 14 shown in fig. 13 and 14. Still further referring to fig. 13 and 14, the toggle member 14 includes a first limiting post 141 and two second limiting posts 142 spaced apart from the first limiting post 141, where the two second limiting posts 142 are opposite and spaced apart from each other. The stem 31 includes a first stem 114 and a drive head 115. The first connection handle 114 and the driving head 115 are disposed on the driving portion 11, such that the driving head 115 is disposed at an end portion of the first connection handle 114, the first connection handle 114 is disposed between the two second limit posts 142, and the driving head 115 is disposed between the first limit posts 141 and the second limit posts 142.

The drive assembly 1 is configured to push the drive head 115 toward the operating assembly 7 by the first limit post 141 or pull the drive head 115 away from the operating assembly 7 by the two second limit posts 142, and the first connection handle 114 slides in the length direction of the two second limit posts 142.

The toggle member 14 in this embodiment is rotatably coupled to the housing portion 16, and an operator's finger drives the toggle member 14. The opposite sides of the first and second limiting posts 141 and 142 form a driving slot 143, the driving head 115 is clamped in the driving slot 143, and when the toggle member 14 swings, the first and second limiting posts 141 and 142 can drive the driving head 115 to move. At the same time, the driving head 115 also slides along the depth direction of the driving groove 143. Thereby, the toggle piece 14 can convert the rotational movement into the linear movement of the driving part 11 through the driving groove 143.

Specifically, the outer diameter of the driving head 115 is larger than the outer diameter of the first connecting handle 114, so that the driving head 115 can be clamped on one side of the two second limiting posts 142, which is close to the first limiting post 141. The top of the driving groove 143 has an opening through which the driving groove 143 opens to one side of the surgical instrument in the needle assembly cavity. The drive head 115 in this embodiment can utilize this opening into the drive slot 143. Therefore, the assembly process of the needle type combined cavity surgical instrument is simplified.

Fig. 13 and 14 are schematic cross-sectional views of the drive assembly 1 of the second embodiment.

In some embodiments, as shown in fig. 1 and 3, the needle-type combination intra-cavity surgical instrument of the present example includes a handle portion 6 and an operating assembly 7.

Referring still further to fig. 12-13, the handle portion 6 includes a drive portion 11 and a limit portion 12. As shown in fig. 3, the operation unit 7 includes a mounting portion 21, a plunger portion 3, and an operation portion 22 provided to the mounting portion 21.

Referring still further to fig. 8, the plunger 3 includes a core rod 31 and a sleeve 32. The sleeve 32 has two open ends, and the core rod 31 is movably inserted through the sleeve 32. The plug portion 3 has a second plug end 41b and a mounting end 42, and the stem 31 of the second plug end 41b protrudes from the sleeve 32. That is, the two ends of the core rod 31 and the two ends of the sleeve 32 form a second inserting end 41b and a mounting end 42, respectively, the sleeve 32 of the mounting end 42 is fixedly connected with the mounting portion 21, and the second inserting end 41b is detachably connected with the handle portion 6.

Meanwhile, the handle portion 6 is configured such that the driving portion 11 drives the operating portion 22 through the stem 31 to perform a surgical operation, and the restricting portion 12 restricts the movement of the mounting portion 21 through the sleeve 32.

To sum up, in the needle-type combined intra-cavity surgical instrument of the present embodiment, the operation portion 22 is provided to the mounting portion 21 to form the operation unit 2, and the core bar 31 is inserted into the sleeve 32. Meanwhile, the two ends of the core rod 31 and the two ends of the sleeve 32 form a second inserting end 41b and a mounting end 42 respectively, and the sleeve 32 of the mounting end 42 is fixedly connected with the mounting portion 21. Thus, on the one hand, the stem 31 is extended from the open end so that the second plug end 41b is connected to the handle portion 6. With the cooperation of the core rod 31 and the sleeve 32, the mechanical strength of the plunger 3 is increased, so that the length of the plunger 3 can be configured longer. In the intracavity operation, the inserted link portion 3 can pass first wound and second wound simultaneously, and then helps the operating personnel to assemble and dismantle handle portion 6 fast on second grafting end 41b, has simplified the operation degree of difficulty of operation. Meanwhile, bending of the inserted rod part 3 can be avoided. On the other hand, the sleeve 32 is sleeved on the outer side of the core rod 31, so that bending of the core rod 31 can be reduced or even avoided when the driving part 11 drives the core rod 31 to move. So that the driving part 11 can pull or push the core bar 31 to drive the operation part 22 to move, and the driving mode of the operation part 22 is increased. On the other hand, in the movement of the core bar 31, the movement of the mounting portion 21 is also restricted by the engagement of the sleeve 32 with the stopper portion 12, so that the position of the operation portion 22 in the cavity is ensured to be unchanged.

Specifically, the sleeve 32 and the core rod 31 in the present embodiment may be made of stainless steel, cobalt alloy or titanium alloy, so that the plunger 3 has a better bending strength in the radial direction and a better tensile strength and compressive strength in the axial direction. At the same time, the inserted rod part 3 can have certain electric conductivity. The sleeve 32 has a bore. The core rod 31 is inserted into the hole. When the core rod 31 slides along the hole, most of the area of the core rod 31 is located inside the sleeve 32, so that the sleeve 32 can provide support for the core rod 31 and prevent the core rod 31 from bending and deforming. Further, after the plunger 3 and the operating member 7 are assembled together, the driving portion 11 may push the core rod 31 to move the operating portion 22, or pull the core rod 31 to move the operating portion 22. In this process, both ends of the core rod 31 may remain or remain substantially in a straight-line extended configuration when compressed or pulled. Furthermore, as shown in the states ii d and ii e in fig. 5, in this form, the operator may also pass the second insertion end 41b of the insertion rod portion 3 through the first wound, and when the length of the insertion rod portion 3 is longer, the matching form of the core rod 31 and the sleeve 32 in this embodiment can reduce or even avoid bending of the insertion rod portion 3, which is helpful for the operator to perform the operation and avoid bending of the insertion rod portion 3 after the operation.

Alternatively, the operation unit 2 in the present embodiment includes, but is not limited to, a scalpel member, a needle holder member, a suction head member, a forceps member, a scissors member, a forceps member, or the like. Those skilled in the art can choose according to the actual operation of the procedure.

Taking the forceps member as an example, the first operation arm 221 and the second operation arm 222 are configured as two forceps heads, so that the biological tissue is gripped, pulled, hemostasis, dressing, or the like by the mutual approach of the two forceps heads. Taking the scissor component as an example, the first operation arm 221 and the second operation arm 222 are configured as two scissor arms, so that the operations of shearing biological tissues, cutting a suture line or cutting a dressing and the like are realized through the mutual approaching of the two scissor arms. Taking the example of a needle holder component, the needle holder component may be used to hold a suture needle and assist in tying the suture. Taking a suction head member as an example, the suction head member may be actuated by the drive of the handle portion 6, so that a negative pressure is generated in the suction head. Further, blood, liquid or flushing liquid in the surgical field is sucked out to keep the surgical field clear. The surgical field refers to the range of vision reached during surgery. Taking the tweezer part as an example, the two tips of the tweezer are close to each other under the drive of the handle part 6, so as to realize the effects of clamping or assisting in dissection and the like.

Alternatively, the puncture head 35 in the above embodiment is provided on the second insertion end 41b in the present embodiment. Thus, the plunger 3 is extended into the cavity through the puncture cannula 32 and then directly penetrated out from the inner side of the skin to make the second wound. Thereby, the surgical steps are simplified.

In some embodiments, as shown in fig. 8 and 13, the stem 31 has a first connection region 33 connected to the driving portion 11, the sleeve 32 has a second connection region 34 connected to the stopper portion 12, and the first connection region 33 and the second connection region 34 are located at the second mating end 41b.

The stem 31 at the second mating end 41b extends from the sleeve 32 and is operable to move telescopically with the first connection region 33 in a straight line toward or away from the second connection region 34.

Specifically, when the first connection region 33 is close to the second connection region 34 in this embodiment, the first connection region 33 is located outside the sleeve 32, and the first connection region 33 is spaced apart from the second connection region 34 by a first distance. When the first connection region 33 is away from the second connection region 34, the first connection region 33 is a second distance from the second connection region 34. The difference between the first distance and the second distance in this embodiment is the movement stroke of the core rod 31. The core bar 31 moves in the movement stroke by the driving part 11 to drive the operation part 22 to move.

In some embodiments, as shown in fig. 14, the first connection region 33 forms a third thread pair A3 with the drive portion 11. The handle portion 6 further comprises a dial 15. The driving part 11 is driven by the shifting piece 15 to rotate so as to make the threads of the third thread pair A3 screwed.

Specifically, the first connection region 33 is an external thread, and the driving portion 11 is provided with an internal thread corresponding to the external thread. Still further referring to state ii c in fig. 5, when the second insertion end 41b is passed out of the second wound, the operator can hold the operation unit 2 and the insertion rod portion 3 with one hand to avoid rotation thereof. The other hand holds the handle portion 6 to bring the second socket end 41b and the driving portion 11 together. Then, the thumb and index finger are used to toggle the toggle 15, so that the driving part 11 rotates. Thereby, the first connection region 33 is screwed into the internal thread. Still further referring to state ii e in fig. 5, in this form, the operator can reverse rotate the toggle 15 to disengage the handle portion 6 from the operating assembly 7 in this embodiment.

In some embodiments, as shown in fig. 12 to 14, the driving part 11 is a rod body and is provided with a guide groove 111. The stopper 12 further includes a second stopper 122 and a positioning pin 13. The second limiting member 122 has a second positioning hole 1218, and the limiting portion 12 has a second sliding way 1221. The driving part 11 is slidably disposed on the second slide 1221, and the positioning pin 13 extends into the guide groove 111 from the second positioning hole 1218. The dial 15 has a third through hole 153. The second limiting member 122 is fixedly connected to the rotating member 15 through a third through hole 153.

The rotation member 15 is configured to rotate the second limiting member 122 through the third through hole 153, so that the second limiting member 122 rotates the driving portion 11 through the positioning pin 13. Thereby, the operator can easily adjust the setting orientation of the operation unit 2.

Fig. 15 is a schematic cross-sectional view of the drive assembly 1 of the present embodiment in other embodiments. Fig. 16 is a schematic cross-sectional view at A-A in fig. 15.

In some embodiments, as shown in fig. 15-16, the first connection region 33 includes a second connection handle 331 and a snap joint 332 protruding from an end of the second connection handle 331, and a lateral side of the second connection handle 331 has a rotation stopping surface 333.

The driving part 11 is provided with a connecting cavity 116. The connection cavity 116 includes a slot 1161 and a channel 1162, the clip 332 passes through the channel 1162 and is clipped in the slot 1161, and the rotation stopping surface 333 abuts against a side wall of the channel 1162.

Specifically, referring still further to state ii c in fig. 5, the operator can hold the operating unit 2 and the plunger 3 with one hand and hold the handle 6 with the other hand, and then directly align the second insertion end 41b with the driving portion 11, so that the clamping groove 1161 and the channel 1162 fix the first connecting area 33, and the plunger 3 is prevented from being easily separated from the handle 6. At the same time, the rotation stopping surface 333 is in a fitting state with the side wall of the channel 1162, so as to prevent the operation assembly 7 from rotating relative to the driving part 11 during operation. The rotation stopping surface 333 can also prevent the core rod 31 and the sleeve 32 from rotating relatively when the rotation of the sleeve 32 is restricted by the restriction portion 12 and the rotation of the restriction portion 12 and the driving portion 11 are synchronized.

Optionally, as shown in fig. 16, the second connecting handle 331 in this embodiment includes a plurality of rotation stopping surfaces 333. The plurality of rotation stop surfaces 333 includes two rotation stop surfaces 333 that are perpendicular to each other. When the two rotation stopping surfaces 333 are attached to the inner wall of the channel 1162, the second connecting handle 331 is effectively prevented from rotating in the channel 1162.

A specific form of the driving portion 11 is shown in fig. 17.

Preferably, as shown in fig. 15-16, the axial cross-section of the second stem 331 has a rounded rectangle in outline, and two adjacent sides of the rounded rectangle are equal in length. Meanwhile, the snap 332 is a partial sphere. I.e., a segment, the bottom surface of which is connected to the end surface of the second connecting handle 331. The diameter L1 of the sphere is greater than the distance L2 between the two rotation stop surfaces 333 of the second connecting shank 331 facing away from each other.

In contrast, as shown in fig. 17, the driving section 11 includes a rod body. The channel 1162 has two first stop surfaces 1171 and a second stop surface 1712 positioned between the two first stop surfaces 1171, the two first stop surfaces 1171 being opposite and spaced apart. The clip groove 1161 has a spherical cap surface 1181 and a cambered surface region 1812. The arcuate surface area 1812 extends along the radial direction of the shaft body, and the arcuate surface area 1812 extends from the spherical cap surface 1181 to the outer side surface of the shaft body to form a second side opening. The arcuate surface area 1812 curves away from the channel 1162. The channel 1162 has a first direction of extension and a second direction of extension. In the first extending direction, the channel 1162 extends along the axial direction of the rod, and the two first limiting surfaces 1171 extend from the end surface of the rod to the arc surface area 1812. In the second extending direction, the two first limiting surfaces 1171 extend to the outer side surface of the rod body along the radial direction of the rod body so as to form a first side opening.

Thus, when the second socket end 41b is aligned with the driving portion 11, the segment will first penetrate the channel 1162. In this process, the segment body will expand the two first limiting surfaces 1171, so that the opening width of the first side opening and the second side opening is increased until the segment body extends into the clamping groove 1161. Some of the segments will fit over the crown 1181 and the rest of the segments will lie within the arcuate region 1812. In this form, the two rotation stopping surfaces 333 of the second connecting handle 331 facing away from each other will respectively abut against the two first limiting surfaces 1171, and one rotation stopping surface 333 far away from the first side opening will abut against the second limiting surface 1712. Further, the core bar 31 and the driving unit 11 are fixedly connected.

In the above process, the cooperation of the channel 1162 and the segment can limit the axial positions of the core rod 31 and the driving portion 11. The mating of the segment with the crown surface 1181 further limits the radial positioning of the core bar 31 and the driver 11.

Further, the third limiting member 123 has a second through hole 1232, and the plunger 3 passes through the second through hole 1232 during the process of expanding the two first limiting surfaces 1171 of the segment. The second through hole 1232 can limit the movement direction of the plunger 3, and prevent the plunger 3 from being shifted toward the first side opening.

In some embodiments, as shown in FIG. 13, the first and second connection regions 33 and 34 are located at the ends of the core pin 31 and the sleeve 32, respectively, and the first connection region 33 is located outside the sleeve 32. The stopper 12 has a second slide 1221 and a fixing opening 1211 provided corresponding to the second slide 1221. At least a portion of the drive portion 11 is slidably disposed on the second slide 1221.

The first connection region 33 is detachably connected to the driving part 11 through the fixing port 1211, and the fixing port 1211 is fixedly connected to the second connection region 34.

The fixing opening 1211 in the present embodiment is used to limit the sleeve 32 when the first connection region 33 is connected to the driving portion 11. Thus, on the one hand, in the linear movement of the core rod 31, the fixing opening 1211 clamps the second connecting region 34, so that the fixing opening 1211 brings the sleeve 32 into a stationary state by friction, avoiding that the sleeve 32 follows the movement in the reciprocating movement of the core rod 31. On the other hand, when the operator drives the rotation member 15 to rotate to drive the limiting portion 12 to rotate, the driving portion 11 drives the core rod 31 to rotate, and meanwhile, the fixing opening 1211 can also drive the sleeve 32 to rotate together through the friction force applied to the second connection area 34. Further, the dial 15 is enabled to perform precise adjustment of the setting direction of the operation unit 2 in the circumferential direction of the plunger portion 3. The conditions that the core bar 31 generates larger torsional stress and the threads of the third thread pair A3 are loosened due to the relative rotation of the core bar 31 and the sleeve 32 are avoided.

One particular form of the first stop member 121 is shown in fig. 18.

In some embodiments, as shown in fig. 13 and 18, the limiter 12 includes a first limiter 121. The first limiting member 121 includes a plurality of fixing bodies 1212. The plurality of fixation bodies 1212 are operable to move toward and away from each other. The plurality of fixing bodies 1212 are separated from each other to form a avoiding opening 1213, the second plug end 41b passes through the avoiding opening 1213 to be connected with the driving part 11, and the plurality of fixing bodies 1212 are close to each other to form a fixing opening 1211. The escape opening 1213 in the present embodiment may facilitate insertion of the second mating end 41b into the driver 11.

Further, as shown in fig. 18, the fixing body 1212 is a second positioning spring. The first limiter 121 further includes a barrel 1214. The cylinder 1214 has a first connection end 1215, and a plurality of second positioning spring plates are disposed at the first connection end 1215 and inclined inward of the cylinder 1214, and the plurality of second positioning spring plates are disposed around the center of the cylinder 1214.

The second positioning spring pieces form the escape opening 1213 in a free state, and mutually abut against each other to form the fixing opening 1211. Thus, the plurality of second positioning elastic pieces are driven to be close to each other, and positioning of the sleeve 32 can be achieved. The positioning operation of the sleeve 32 is simplified.

In some embodiments, as shown in fig. 18, the barrel 1214 also has a second connection end 1216. Still further referring to fig. 13, the spacing portion 12 also includes a guide structure 125. The second slideway 1221 is disposed on the guiding structure 125, the second connecting end 1216 is fixedly connected with the guiding structure 125, and the cylinder 1214 extends along the extending direction of the second slideway 1221.

The second slide 1221 has first and second oppositely facing ports, the first port facing the fixed port 1211 and being a first predetermined distance from the fixed port 1211.

As shown in fig. 13, the driving section 11 in this embodiment includes a joint 113. The connector 113 is adapted to be connected to the first connection region 33. The cylinder 1214 is located between the first port and the fixed port 1211, thereby providing a movement space for the movement of the connector 113. The connector 113 is prevented from colliding with the first limiting member 121 during the movement of the driving part 11.

In some embodiments, as shown in fig. 14, the handle portion 6 further includes a second connector 151. Still further referring to fig. 13, the stopper 12 further includes a third stopper 123. The third limiting member 123 has a pressing ring surface 1231 and a second through hole 1232, and the third limiting member 123 and the second connecting body 151 form a fourth screw pair A4.

In the screwing state of the threads of the fourth thread pair A4, the pressing ring surface 1231 presses the plurality of second positioning elastic pieces to be close to each other so as to form the fixing opening 1211, and the second through hole 1232 corresponds to the fixing opening 1211.

Specifically, the pressing ring surface 1231 has a taper. That is, the diameter of the inner ring of the abutment ring surface 1231 adjacent to the second through hole 1232 is smaller than the diameter of the outer ring adjacent to the first port. The second positioning spring piece comprises a second positioning end. The third limiting member 123 has an internal thread, and the second connecting body 151 has an external thread. In the process of continuously screwing the internal thread into the external thread, the pressing ring surface 1231 gradually presses against the side of the second positioning elastic sheet away from the inserting rod portion 3, so that the plurality of second positioning ends synchronously approach each other and are abutted with the sleeve 32.

Further, as shown in fig. 18, a plurality of second positioning spring pieces are uniformly distributed around the cylinder 1214, and the second positioning ends are bent outward of the cylinder 1214 in the axial cross-section direction of the cylinder 1214. Thereby, the contact area of the second positioning end with the sleeve 32 is increased, so that the second positioning end can be adapted to the shape of the outer side surface of the sleeve 32.

In some embodiments, as shown in fig. 13 and 14, the handle portion 6 further includes a dial 15. The dial 15 includes a dial body 152 and a second connection body 151.

The handle portion 6 is configured to rotate together with the stopper portion 12 and the driving portion 11 by the dial body 152, so that the operating portion 22 rotates in the circumferential direction of the insertion rod portion 3.

Specifically, the plunger 3 is configured such that the core rod 31 and the sleeve 32 rotate in synchronization. When the third limiting member 123 is rotated with the second connecting body 151, an operator can hold the pulling body 152 to prevent the second connecting body 151 from rotating. When the fixed opening 1211 is fixedly connected to the second connecting area 34, the rotation shifter 15 may drive the limiting portion 12 and the driving portion 11 to rotate together, so that the operating assembly 7 may also rotate under the rotation of the rotation shifter 15. Thus, after the operator has assembled the second plug end 41b with the handle portion 6, the position of the first operating arm 221 and the second operating arm 222 can be further adjusted by the toggle 15, so as to facilitate the use in the operation.

In some embodiments, as shown in fig. 8, the operating portion 22 includes a first operating arm 221 and a second operating arm 222. The plunger 3 further includes a second insulating layer 52, the second insulating layer 52 is disposed on the outer side surface of the sleeve 32, and the second connection region 34 is exposed outside the second insulating layer 52. The first operation arm 221, the second operation arm 222, the sleeve 32, and the stem 31 are all electric conductors.

The second plugging end 41b is detachably connected to the operation unit 2, and the core bar 31 is electrically connected to the first operation arm 221, the second operation arm 222, and the sleeve 32. Thus, the needle-type combined intra-cavity surgical instrument in the embodiment can be used as a monopolar electrocoagulation instrument. In this process, the second insulating layer 52 can prevent the current on the sleeve 32 from passing to other locations, which in turn can cause the voltage on the first operating arm 221 and the second operating arm 222 to decrease.

Alternatively, as shown in fig. 13 and 19, the handle portion 6 in the present embodiment includes a conductive arm 193 and a first conductive ring 191 connected to the conductive arm 193, or the handle portion 6 includes a conductive arm 193 and a second conductive ring 192 connected to the conductive arm 193.

When the handle portion 6 is provided with the first conductive ring 191, the second limiting member 122 rotatably penetrates through the first conductive ring 191 and is electrically connected with the first conductive ring 191. The second limiting member 122 may be electrically connected to the first limiting member 121, the core rod 31 and the sleeve 32 at the same time. One end of the conductive arm 193 is connected to the first conductive ring 191 (as shown in fig. 19), and the other end thereof protrudes outside the shell portion 16 through the receiving space 161 so that an electric coagulation current is fed to the sleeve 32 through the conductive arm 193 and the first conductive ring 191.

In some embodiments, as shown in fig. 8 and 13, the stopper 12 includes a first stopper 121, and the fixing port 1211 is provided at the first stopper 121. The plunger 3 further includes a first insulating layer 51 and a second insulating layer 52, at least a portion of the first insulating layer 51 is disposed between the core rod 31 and the sleeve 32, the second insulating layer 52 is disposed on the outer side surface of the sleeve 32, and the second connection region 34 is exposed outside the second insulating layer 52.

Specifically, the first insulating layer 51 is disposed on the outer side surface of the core rod 31, such that the first connection region 33 is exposed outside the first insulating layer 51. Or the first insulating layer 51 may be directly disposed on the inner side of the sleeve 32.

The operation section 22 includes a first operation arm 221 and a second operation arm 222. The mounting portion 21 includes a sheath 212 and a third insulating layer 53, the third insulating layer 53 is disposed on at least a partial area of an outer side surface of the sheath 212, the second operating arm 222 is disposed on the sheath 212, and the core rod 31 drives the first operating arm 221 and the second operating arm 222 to approach or separate from each other.

The first operating arm 221, the second operating arm 222, the sheath 212, the sleeve 32, the core rod 31 and the first limiting member 121 are all electric conductors;

the second plug end 41b is detachably connected to the handle portion 6, and the first operating arm 221 forms a first electrical path with the stem 31. The second operating arm 222, the sheath 212, the sleeve 32 and the first stopper 121 form a second electrical path. The needle-type combined intra-cavity surgical instrument in this embodiment may be used as a bipolar coagulation instrument, and after the first operation arm 221 and the second operation arm 222 clamp biological tissue, the first operation arm 221 and the second operation arm 222 are conducted through the biological tissue to apply an electric coagulation current to the clamped biological tissue.

In some embodiments, as shown in fig. 13, the handle portion 6 further includes a shell portion 16, the shell portion 16 having a receiving space 161. The accommodating space 161 can be used for accommodating the toggle member 14 of the handle portion 6 and a wire for transmitting an electrocoagulation current.

Still further referring to fig. 12, the spacing portion 12 further includes a guide structure 125. The guiding structure 125 includes a second insulating liner 124 and a second limiting member 122, the second limiting member 122 being an electrical conductor. The second insulating liner 124 includes a second spacer sleeve 1241, the second sliding ways 1221 are formed on an inner wall of the second spacer sleeve 1241, and the second limiting member 122 is disposed on the shell portion 16. One end of the second limiting member 122 is in threaded connection with the first limiting member 121 and is in an electrical connection state, and the other end of the second limiting member is disposed in the accommodating space 161.

Specifically, as shown in fig. 12 and 13, one end of the second limiting member 122 extends toward the fixing port 1211, and the other end extends into the accommodating space 161, so that the second limiting member 122 is connected with the wire in the accommodating space 161.

Preferably, the second connection end 1216 is provided with an internal thread and the end of the second limiter 122 is provided with a corresponding external thread. The first limiting member 121 is screwed with the second limiting member 122 through the internal thread provided at the second connecting end 1216. Thus, one skilled in the art can adjust the distance between the fixed port 1211 and the first port by controlling the screwing depth of the female screw and the male screw.

Further, the dial 15 has a third through hole 153, and the case portion 16 has a fourth through hole 162 communicating with the accommodating space 161. The handle portion 6 further comprises a first cable, a second cable, a first conductive ring 191 and a second conductive ring 192. The second limiting member 122 is a solid of revolution and has a receiving hole 1217. The inner side of the second limiting member 122 is used for supporting the second spacer sleeve 1241, and the first conductive ring 191 is clamped in the fourth through hole 162. The second limiting member 122 is disposed through the third through hole 153 and the first conductive ring 191. At the same time, the driving part 11 and the limiting part 12 rotate synchronously. The driving part 11 includes a first connection handle 114, the first connection handle 114 is disposed through the second conductive ring 192, and the first connection handle 114 is configured to be capable of moving telescopically in the second conductive ring 192 and capable of rotating in the second conductive ring 192.

When the rotation member 15 rotates, the rotation member 15 drives the second limiting member 122 to rotate in the fourth through hole 162 and the first conductive ring 191 through the third through hole 153, and simultaneously the core rod 31 rotates in the second conductive ring 192. Thus, during the assembly process of the surgical instrument in the needle-type combined cavity and during the surgical operation, the first cable may be kept electrically connected to the second limiting member 122 through the first conductive ring 191, and the second cable may be kept electrically connected to the core rod 31 through the second conductive ring 192.

In some embodiments, as shown in fig. 12-13, the stop 12 further includes a locating pin 13, and the locating pin 13 is an insulator.

Still further referring to fig. 14, the second spacer sleeve 1241 has a first positioning hole 1242, the first positioning hole 1242 extending from the second slideway 1221 to an outer side wall of the second spacer sleeve 1241. That is, the inner and outer sidewalls of the second spacer sleeve 1241 communicate through the first positioning hole 1242.

The driving part 11 is a rod body and is provided with a guide groove 111, and the guide groove 111 is provided with two limiting surfaces 112 which are oppositely arranged. The two stopper surfaces 112 extend in the longitudinal direction of the plunger 3. The second limiting member 122 has a receiving hole 1217 and a second positioning hole 1218, and one end of the second positioning hole 1218 extends to the receiving hole 1217. The second spacer sleeve 1241 is disposed in the receiving hole 1217, and the positioning pin 13 extends from the second positioning hole 1218 into the guiding slot 111 through the first positioning hole 1242.

During the process that the driving portion 11 drives the core rod 31 to move linearly, the positioning pin 1313 moves along the extending directions of the two limiting surfaces 112, and the positioning pin 13 abuts against the two limiting surfaces 112 to limit the core rod 31 to rotate relative to the sleeve 32.

Thus, on the one hand, the positioning pin 13 in the present embodiment cooperates with the guide groove 111 such that the driving portion 11 has a degree of freedom of rectilinear motion with respect to the guide structure 125, while the driving portion 11 is also capable of rotating in synchronization with the guide structure 125. On the other hand, the positioning pins 13 are engaged with both ends of the guide groove 111, and also function to limit the movement stroke of the driving portion 11.

Specifically, the first positioning hole 1242 extends through the second spacer sleeve 1241, and the second positioning hole 1218 extends through the second limiter 122. The two ends of the positioning pin 13 extend into the two second positioning holes 1218 respectively. Thus, the positioning pin 13 can be inserted into the first positioning hole 1242, the second positioning hole 1218, and the guide groove 111 from one side of the guide structure 125, simplifying the assembly process of the guide structure 125.

In some embodiments, as shown in fig. 14, the handle portion 6 further includes a dial 15. The dial 15 includes a dial body 152 and a second connection body 151. The limiting part 12 further includes a third limiting member 123, where the third limiting member 123 and the rotating member 15 are both insulators, and the third limiting member 123 has a receiving cavity 1233 and a second through hole 1232. The inner wall of the accommodating cavity 1233 has a pressing ring surface 1231, and the third limiting member 123 and the second connecting body 151 form a fourth thread pair A4.

In the screwing state of the threads of the fourth thread pair A4, the first limiting member 121 and a part of the second limiting member 122 are located in the accommodating cavity 1233, the pressing ring surface 1231 presses the plurality of second positioning elastic pieces to be close to each other to form the fixed opening 1211, the second through hole 1232 corresponds to the fixed opening 1211, and the rotating body 152 is used for driving the limiting portion 12 to rotate.

Specifically, the second insulating layer 52 is disposed on the outer side of the sleeve 32, and extends from the sheath 212 toward the second connection region 34. When the needle-type combined intra-cavity surgical instrument is in the assembled state, the second insulating layer 52 extends to the inside of the second through hole 1232.

The third limiting member 123 and the rotating member 15 in this embodiment are both insulators, so that the risk of electric shock caused by direct contact between the hand of the operator and the second limiting member 122, the first limiting member 121 or the sleeve 32 during assembly or use of the surgical instrument in the needle-shaped combined cavity can be avoided.

In some embodiments, as shown in fig. 13-14, the handle portion 6 further includes a toggle member 14. The toggle member 14 includes a first limiting post 141 and two second limiting posts 142 spaced apart from the first limiting post 141, where the two second limiting posts 142 are opposite and spaced apart from each other.

The driving part 11 comprises a connector 113, a first connecting handle 114 and a driving head 115, wherein the first connecting handle 114 is positioned between the driving head 115 and the connector 113, the connector 113 is connected with one end of the core rod 31 far away from the operating assembly 7, the first connecting handle 114 is arranged between two second limiting columns 142, and the driving head 115 is arranged between the first limiting column 141 and the second limiting column 142.

The handle portion 6 is configured to push the driving head 115 toward the operating assembly 7 by the first limit post 141 or pull the driving head 115 away from the operating assembly 7 by the two second limit posts 142, and the first connection handle 114 slides in the length direction of the two second limit posts 142.

In some embodiments, as shown in fig. 2, a needle-type combination intra-cavity surgical instrument includes a drive assembly 1 and an operating unit 2. The operation unit 2 includes a mounting portion 21 and a first operation arm 221 provided to the mounting portion 21. The drive assembly 1 comprises a handle portion 6 and a plunger portion 3 which are fixedly connected, the plunger portion 3 having a first insertion end 41a. The first inserting end 41a is located at one end of the inserting rod portion 3 away from the handle portion 6, the first inserting end 41a is detachably connected with the operation unit 2, and the handle portion 6 drives the first operation arm 221 to perform operation through the inserting rod portion 3.

Thus, the needle-type combined intra-cavity surgical instrument in the embodiment is detachably assembled with the operation unit 2 by using the first insertion end 41a, so that the handle part 6 can directly drive the first operation arm 221 to perform the surgical operation, and the damage of the second wound to the human body is reduced. The first operation arm 221 in this embodiment may be a surgical knife, nerve stripper, or bone file.

In some embodiments, as shown in fig. 3, the needle-type combination intra-cavity surgical instrument includes a handle portion 6 and an operating assembly 7. The operation assembly 7 includes the plunger 3 and the first operation arm 221 provided to the plunger 3. The plug-in lever portion 3 has a second plug-in end 41b. The second plugging end 41b is located at an end of the plugging lever portion 3 remote from the first operation arm 221, and the second plugging end 41b is detachably connected with the handle portion 6. The handle portion 6 is configured to carry the first operation arm 221 through the plunger portion 3 for performing a surgical operation.

Therefore, the needle type combined intra-cavity surgical instrument in the embodiment is detachably assembled with the handle part 6 by the second inserting end 41b, so that the handle part 6 can directly drive the first operating arm 221 to perform surgical operation, and the damage of the second wound to the human body is reduced. The first operation arm 221 in this embodiment may be a surgical knife, nerve stripper, or bone file.

Preferably, the housing portion 16 and the toggle member 14 in the above-described embodiments are each configured as an insulator to avoid electric shock to the operator.

Preferably, the outer diameter of the sleeve 32 in the above embodiment is configured to be 2.4mm-2.8mm, and the inner diameter of the sleeve 32 is configured to be 1.4mm-1.6mm, so that the sleeve 32 has a certain rigidity, thereby ensuring that the insert rod portion 3 cannot be easily bent. The outer diameter of the core rod 31 (including the first insulating layer 51) and the inner diameter of the sleeve 32 may have a clearance of 0.05mm to 0.2mm. The length of the insertion rod portion 3 is configured to be 280mm-500mm so as to ensure that both ends of the insertion rod portion 3 can pass through the first wound and the second wound, respectively. The length of the core rod 31 is configured to be greater than the length of the sleeve 32, for example, the length of the core rod 31 is 330mm, and the length of the sleeve 32 is configured to be 300mm, so that both ends of the core rod 31 can protrude from both ends of the sleeve 32.

It will be readily appreciated that the second incision may be made smaller in size by the use of the plunger 3. When the outer diameter of the plunger 3 is less than 5mm, the second wound will close after the plunger 3 is pulled out of the second wound. And suture operation is not needed, so that the damage of the operation to the human body is reduced.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A needle-type combined intra-cavity surgical instrument, comprising:

An operation unit (2) that includes an attachment portion (21) and an operation portion (22) provided to the attachment portion (21); and

The driving assembly (1) comprises a handle portion (6) and an inserting rod portion (3) which are fixedly connected, the inserting rod portion (3) comprises a core rod (31) and a sleeve (32), the sleeve (32) is provided with two open ends, the core rod (31) is movably arranged in the sleeve (32) in a penetrating mode, the inserting rod portion (3) is provided with a first inserting end (41 a) and a mounting end (42), the core rod (31) of the first inserting end (41 a) extends out of the sleeve (32), the inserting rod portion (3) is detachably connected with the operating unit (2) at the first inserting end (41 a), and the handle portion (6) is fixedly connected with the sleeve (32) and is pulled or pushed to drive the core rod (31) to drive the operating unit (2) to conduct operation.

2. The needle-type combined intra-cavity surgical instrument according to claim 1, wherein the core bar (31) has a first connecting region (33) for moving the operating portion (22), the sleeve (32) has a second connecting region (34) for restricting the movement of the mounting portion (21), and the first connecting region (33) and the second connecting region (34) are located at the first insertion end (41 a);

The core rod (31) can move in an operative telescopic manner, and the first connecting region (33) is close to or far from the second connecting region (34) along a straight line.

3. The needle type combined intra-cavity surgical instrument according to claim 2, wherein the insertion rod portion (3) further comprises a puncture head (35), the puncture head (35) is provided with a protection cavity (36), the puncture head (35) is detachably arranged at the first insertion end (41 a), and the protection cavity (36) is sleeved on the first connection area (33) and the second connection area (34).

4. The needle-type combined intra-cavity surgical instrument according to claim 2, characterized in that the core bar (31) includes a driving portion (11), the driving portion (11) being located at an end of the core bar (31) remote from the operation unit (2), and the driving portion (11) protruding from the sleeve (32);

The first connection zone (33) and the second connection zone (34) are located at the ends of the core rod (31) and the sleeve (32), respectively, and the first connection zone (33) is located outside the sleeve (32);

The operation unit (2) further comprises a first connecting body (23), the first connecting body (23) is arranged on the operation portion (22), a first connecting area (33) and the first connecting body (23) form a first thread pair (A1), and the driving portion (11) drives the operation portion (22) to perform operation through the first thread pair (A1).

5. The needle-type combined intra-cavity surgical instrument according to claim 4, characterized in that the mounting portion (21) and the second connecting region (34) form a second screw pair (A2), the pitch and screwing direction of the screw of the second screw pair (A2) being the same as those of the first screw pair (A1);

the first plug-in end (41 a) is connected with the operation unit (2), and the threads of the first thread pair (A1) and the threads of the second thread pair (A2) are in a screwing state.

6. The needle combination intra-cavity surgical instrument according to claim 5, wherein the core bar (31) is configured to rotate synchronously with the cannula (32);

The first connecting region (33) has a first external thread, the second connecting region (34) has a second external thread, the first connecting body (23) has a first internal thread, the mounting portion (21) has a second internal thread, the first external thread and the first internal thread form the first thread pair (A1), and the second external thread and the second internal thread form the second thread pair (A2);

The operating unit (2) is configured such that the handle portion (6) restricts the linear movement of the core bar (31) relative to the sleeve (32) by the driving portion (11) when the first external screw thread and the second external screw thread are screwed into the first internal screw thread and the second internal screw thread, respectively.

7. The needle-type combined intra-cavity surgical instrument according to claim 4, wherein the mounting portion (21) has a first through hole (211);

the operation unit (2) further comprises a connecting sleeve (24), the connecting sleeve (24) comprises a plurality of first positioning elastic pieces (241), the plurality of first positioning elastic pieces (241) have elastic bending amounts towards the outer side of the connecting sleeve (24), and the second connecting region (34) is positioned on the outer side wall of the sleeve (32);

the connecting sleeve (24) is arranged in the first through hole (211), the first connecting region (33) penetrates through the connecting sleeve (24) and is connected with the first connecting body (23), and the plurality of first positioning elastic pieces (241) are abutted with the second connecting region (34).

8. A needle-type combined intra-cavity surgical instrument, comprising:

A handle part (6) comprising a driving part (11) and a limiting part (12); and

The operation assembly (7) comprises a plug rod part (3), a mounting part (21) and an operation part (22) arranged on the mounting part (21), wherein the plug rod part (3) comprises a core rod (31) and a sleeve (32), the sleeve (32) is provided with two open ends, the core rod (31) movably penetrates through the sleeve (32), the plug rod part (3) is provided with a second plug end (41 b) and a mounting end (42), the core rod (31) of the second plug end (41 b) extends out of the sleeve (32), the sleeve (32) of the mounting end (42) is fixedly connected with the mounting part (21), and the second plug end (41 b) is detachably connected with the handle part (6);

The handle portion (6) is configured such that the driving portion (11) drives the operating portion (22) through the stem (31) to perform a surgical operation, and the restricting portion (12) restricts the movement of the mounting portion (21) through the sleeve (32).

9. A needle-type combined intra-cavity surgical instrument, comprising:

an operation unit (2) that includes a mounting portion (21) and a first operation arm (221) provided to the mounting portion (21); and

The driving assembly (1) comprises a handle portion (6) and a rod inserting portion (3) which are fixedly connected, the rod inserting portion (3) is provided with a second inserting end (41 b), the second inserting end (41 b) is located at one end, away from the handle portion (6), of the rod inserting portion (3), the second inserting end (41 b) is detachably connected with the operating unit (2), and the handle portion (6) drives the first operating arm (221) to perform operation through the rod inserting portion (3).

10. A needle-type combined intra-cavity surgical instrument, comprising:

a handle portion (6); and

An operation assembly (7) comprising a plug rod part (3) and a first operation arm (221) arranged on the plug rod part (3), wherein the plug rod part (3) is provided with a second plug end (41 b), the second plug end (41 b) is positioned at one end of the plug rod part (3) far away from the first operation arm (221), and the second plug end (41 b) is detachably connected with the handle part (6);

The handle portion (6) is configured to carry out a surgical operation by driving the first operation arm (221) through the insertion rod portion (3).