CN219126884U - Clamp conveying device and clamp conveying system - Google Patents

Abstract

The utility model provides a clamp conveying device and a clamp conveying system, and relates to the field of medical appliances; the main control handle connecting pipe assembly at least comprises a main handle shell, a first upper clamping arm traction wire handle, an outer sleeve, a middle sleeve and a connecting rod; the outer sleeve swing control assembly comprises a first outer sleeve control wire, a second outer sleeve control wire, a transmission assembly and a driving part, so that the front end of the outer sleeve deflects towards a first direction under a first working condition, and deflects towards a second opposite direction under a second working condition. The gripper conveying system comprises the gripper conveying device. The utility model relieves the technical problems that the prior forceps holder device conveying device is difficult to ensure that the forceps holder device is positioned at the middle position between two leaves of the mitral valve along the direction of the involution edge, and the operation effect completely depends on the degree of purity of doctor technology, so that the operation effect is not ideal.

Description

Clamp conveying device and clamp conveying system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a clamp conveying device and a clamp conveying system.

Background

Transcatheter mitral valve clamping (MitraClip) is a minimally invasive catheter interventional procedure for patients with severe mitral regurgitation and high risk of surgery, and is currently the first interventional procedure for treating part of severe mitral regurgitation. Specifically, the transcatheter mitral valve clamping (MitraClip) is based on similar technical principles under the inspired of surgical repair of the limbic mitral valve, and uses a special mitral valve clamping device (Clip) to reach the heart through the blood vessel of the human body, and clamps the middle parts of two leaves of the mitral valve under three-dimensional ultrasonic guidance, so that the mitral valve changes from a large single hole to a small double hole in the systole, thereby reducing mitral regurgitation. Briefly, the method comprises the following steps: the device is sent into the heart through the human blood vessel by the catheter mitral valve repair technology, the wound is very small, the heart is not damaged, the heart beats normally in the operation process, the support of extracorporeal cardiopulmonary circulation is not needed, the patient recovers faster, the patient can be discharged after 2-3 days of operation, and the patient can participate in daily activities within 1 week of operation.

In the prior art, various specific structures of the forceps include, for example, the forceps in patent mitral forceps and mitral forceps delivery device (patent application publication No. CN113940791 a) and patent mitral forceps and mitral forceps delivery device (patent application publication No. CN 113940792A), the forceps delivery device corresponding to the forceps at least needs to include an operating handle, an outer tube and a connecting rod, the operating handle at least includes a handle housing, a first upper arm traction wire handle and a second upper arm traction wire handle, and the specific usage mode can refer to the related descriptions in the patent CN113940791a and the patent CN113940792A publication, wherein the "inner tube" in the patent CN113940792A is the middle sleeve in the present application and the "patent CN113940791a", the "handle housing" in the patent CN113940791a and the patent CN113940792A is the "main handle housing" in the present application, and the present application is designed for the forceps in the patent CN113940791a and the patent CN 113940792A.

However, during actual use, the applicant has found that at least the following problems remain with existing gripper delivery devices:

when the forceps holder device is conveyed into a human body through the outer tube and the connecting rod, the forceps holder device is difficult to ensure that the forceps holder device is positioned at the middle position between two leaves of the mitral valve along the direction of the involution edge, and the operation effect completely depends on the degree of purity of the doctor technology, so that the operation effect is not ideal.

Disclosure of Invention

The utility model aims to provide a clamp conveying device and a clamp conveying system, which are used for relieving the technical problems that the prior clamp conveying device is difficult to ensure that a clamp is positioned at the middle position between two leaves of a mitral valve along the direction of the involution edge, the operation effect completely depends on the degree of pure maturity of doctor technology, and therefore, the operation effect is not ideal.

In order to achieve the above purpose, the embodiment of the present utility model adopts the following technical scheme:

in a first aspect, an embodiment of the present utility model provides a gripper delivery device, including a main steering handle take over assembly, a bend adjustment handle take over assembly, and an outer cannula swing control assembly;

the main control handle connecting pipe assembly at least comprises a main handle shell, a first upper clamping arm traction wire handle, a second upper clamping arm traction wire handle, an outer sleeve, a middle sleeve and a connecting rod; the distal end of the first upper clamp arm traction wire handle and the distal end of the second upper clamp arm traction wire handle are both connected to the main handle shell, and the inner cavities are both communicated with the inner cavity of the main handle shell; the proximal end of the outer sleeve is fixedly connected to the main handle shell and is communicated with the inner cavity of the main handle shell; the proximal end of the middle sleeve is fixedly connected inside the outer sleeve, a stay wire channel which is used for communicating the proximal end and the distal end of the outer sleeve is arranged between the middle sleeve and the outer sleeve, the distal end of the middle sleeve extends out of the outer sleeve, and the distal end of the middle sleeve is provided with a mounting part which is used for being connected with or clamped with the proximal end of a fixing seat of the clamp; the connecting rod sequentially passes through the middle sleeve, the outer sleeve and the main handle shell from the distal end to the proximal end, and a threaded connection part for being in threaded connection with the proximal end of the driving rod of the jaw device is arranged on the wall of the distal end of the connecting rod;

The outer sleeve swing control assembly comprises a first outer sleeve control wire, a second outer sleeve control wire, a transmission assembly and a driving part; the front ends of the first outer sleeve control wire and the second outer sleeve control wire are respectively connected to the pipe wall of the front end of the outer sleeve, and projection points of the front ends of the first outer sleeve control wire and the second outer sleeve control wire on the same radial circumferential line of the outer sleeve are respectively positioned on the same diameter of a circle where the same radial circumferential line is positioned; the rear end of the first outer sleeve control wire and the rear end of the second outer sleeve control wire are respectively connected with the transmission assembly, the transmission assembly is arranged in the inner cavity of the main handle shell, the driving part is arranged in the main handle shell, one part of the driving part is positioned outside the main handle shell, and the other part of the driving part is connected with the transmission assembly;

the drive portion is configured to control actuation of the transmission assembly to pull the first outer sleeve control wire rearward and release the second outer sleeve control wire forward under a first operating condition to deflect the front end of the outer sleeve in a first direction, and to pull the first outer sleeve control wire forward and pull the second outer sleeve control wire rearward under a second operating condition to deflect the front end of the outer sleeve in a second direction opposite the first direction.

According to the embodiment, on the basis of the structure of the main control handle connecting pipe assembly, the outer sleeve swing control assembly is additionally arranged to control the outer sleeve to swing along the direction of the butt joint edge between the two leaves of the mitral valve, so that the front end of the outer sleeve is helped to carry the front end of the middle sleeve and the front end of the connecting rod to deviate to reach the relatively central position of the butt joint edge between the two leaves of the mitral valve, and the positioning accuracy of the input position of the clamp is further improved.

In an alternative implementation of the present embodiment, more preferably, the driving part includes a driving rod and a knob; the transmission assembly comprises a first threaded rod, a first nut piece, a second threaded rod, a second nut piece, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear;

the front-back direction is taken as the axial direction:

the outer sleeve swing control assembly further comprises a mounting seat fixedly mounted in the inner cavity of the main handle shell, the mounting seat comprises a front plate, an axial connecting pipe and a rear plate, the front plate and the rear plate extend along the radial plane of the main handle shell and are fixed on the inner wall of the main handle shell, and the axial connecting pipe is connected with the front plate and/or the rear plate;

the two ends of the first threaded rod and the two ends of the second threaded rod are respectively rotatably arranged on the front plate and the rear plate, the first nut piece is in threaded sleeve joint with the outer part of the first threaded rod, the second nut piece is in threaded sleeve joint with the outer part of the second threaded rod, a first axial limit track and a second axial limit track are arranged on the pipe wall of the axial connecting pipe, the first nut piece is axially limited on the first axial limit track, the second nut piece is axially limited on the second axial limit track, the rear end of the first outer sleeve control wire is connected with the first nut piece, and the rear end of the second outer sleeve control wire is connected with the second nut piece;

The driving rod penetrates through the side wall of the main handle shell in the radial direction and is rotatably mounted on the mounting seat, the first bevel gear and the second bevel gear are fixed at a position of the driving rod in the inner cavity of the main handle shell at intervals, the third bevel gear is fixed at the rear end of the first threaded rod and meshed with the first bevel gear, and the fourth bevel gear is fixed at the rear end of the second threaded rod and meshed with the second bevel gear; the first bevel gear, the second bevel gear, the third bevel gear, the fourth bevel gear, the first threaded rod and the second threaded rod are configured in the rotation direction to drive the first nut member to slide forwards relative to the first threaded rod and drive the second nut member to slide backwards relative to the second threaded rod under the condition that the driving rod rotates forwards; under the condition that the driving rod rotates reversely, the first nut piece is driven to slide backwards relative to the first threaded rod, and the second nut piece is driven to slide forwards relative to the second threaded rod;

the knob is arranged outside the main handle shell and connected to the part of the driving rod outside the main handle shell, and is used for driving the driving rod to rotate in the forward direction or the reverse direction.

Further preferably, in the mounting seat, a through hole is provided in a middle portion of the front plate and a middle portion of the rear plate, respectively.

Preferably, in the mounting seat, the axial connecting pipe includes a front connecting pipe integrally connected to the rear end of the front plate and a rear connecting pipe integrally connected to the front end of the rear plate, and the front connecting pipe and the rear connecting pipe are mutually sleeved.

Preferably, the first nut member and the second nut member are respectively provided with at least two control wire perforations, and the rear ends of the corresponding control wires are fixed to the corresponding nut members in a knotting manner after sequentially passing through the at least two control wire perforations.

Preferably, in the mounting base: the first axial limit rail and the second axial limit rail are respectively a first axial convex strip and a second axial convex strip which are symmetrically arranged on the outer pipe wall of the axial connecting pipe by taking the axial central axis of the axial connecting pipe as a symmetrical axis; the outer peripheral surface of the first nut piece is provided with a first buckling groove, and the outer peripheral surface of the second nut piece is provided with a second buckling groove; the first axial protruding strips are mutually buckled with the first buckling grooves, and the second axial protruding strips are mutually buckled with the second buckling grooves.

In an alternative implementation of this embodiment, it is preferable that the jaw apparatus further includes a bending handle take-over assembly and a front-to-back adjustment assembly for pushing or retracting the main steering handle take-over assembly forward or backward with respect to the bending handle take-over assembly.

The bending handle connecting pipe assembly comprises a bending handle, a bending sheath pipe and a bending wire, wherein the proximal end of the bending sheath pipe is connected to the distal end of the bending handle and is communicated with the inner cavity of the bending handle, one end of the bending wire is connected to the distal end of the bending sheath pipe, and the other end of the bending wire penetrates out of the bending handle and is wound or pressed on the bending handle;

the front-rear adjusting assembly comprises a nut, an external threaded pipe and a locking member;

one of the peripheral surface of the distal end of the nut and the peripheral surface of the proximal end of the bending handle is provided with a circumferential limit groove, the other is provided with a limit protrusion, and the limit protrusion is limited in the circumferential limit groove so that the nut can rotate relative to the bending handle; the outer sleeve in the main control handle connecting pipe assembly sequentially penetrates through the outer threaded pipe, the bending adjusting handle and the bending adjusting sheath pipe from the proximal end to the distal end;

The locking member is mounted to the externally threaded tube to lock the outer sleeve to the externally threaded tube in a locked state and unlock the outer sleeve to the externally threaded tube in an unlocked state;

and in the locking state, the nut is rotated relative to the bending handle, so that the main control handle connecting pipe assembly can be pushed forwards or retracted backwards relative to the bending handle connecting pipe assembly.

Still further preferably, the front-rear adjustment assembly further includes a stress relief structure for moving the outer sleeve forward and backward with respect to the outer threaded tube while rotating with respect to the bending sheath in a state in which the locking member is in an unlocked state and the main operating handle adapter assembly rotates with respect to the outer threaded tube, so as to relieve frictional torsional stress between an outer tube wall of the outer sleeve and an inner tube wall of the outer threaded tube when the outer sleeve and the bending sheath rotate with respect to each other.

Still further preferably, the stress relief means comprises a connecting tube and a stop pin;

the proximal end of the connecting pipe is fixedly connected to the distal end of the main handle shell and is communicated with the inner cavity of the main handle shell, and the outer sleeve penetrates through the connecting pipe; a displacement chute which extends circumferentially and is wavy is arranged on the outer pipe wall at the far end of the connecting pipe;

The pipe wall of the external thread pipe is provided with a limiting pin accommodating hole, one end of the limiting pin is limited in the displacement chute, and the other end of the limiting pin extends into the limiting pin accommodating hole.

In a second aspect, an embodiment of the present utility model provides a gripper delivery system comprising a gripper delivery device according to any one of the preceding embodiments.

Because the gripper conveying system provided by the embodiment of the utility model comprises the gripper conveying device provided by the first aspect, the gripper conveying system provided by the embodiment of the utility model can achieve all the beneficial effects achieved by the gripper conveying device provided by the first aspect.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an isometric view of the overall structure of a jaw apparatus delivery device according to an embodiment of the present utility model when used with an auxiliary support;

FIG. 2 is an exploded view of a jaw feeder assembly according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of the structure of the portion A in FIG. 1;

FIG. 4 is an enlarged view of a portion of the structure of the portion B in FIG. 2;

FIG. 5 is an enlarged view of a portion of the structure of the portion C in FIG. 2;

FIG. 6 is a block diagram illustrating the assembly of the transmission assembly, the driving rod and the mounting base in the swing control assembly of the outer sleeve in the jaw conveyer according to the embodiment of the present utility model;

FIG. 7 is an assembled block diagram of the structure of FIG. 6 at another view angle;

fig. 8 is a schematic view of the overall structure of a release handle after a connecting rod in a gripper conveying device is adjusted in the handle according to an embodiment of the present utility model.

Icon: 100-a primary steering handle take over assembly; 11-a main handle housing; 110-a mounting base; 111-front plate; 112-a back plate; 113-an axial connection tube; 1131-front connection tube; 1132-a rear connection tube; 1-a driving rod; 2-a knob; 3-a first threaded rod; 4-a first nut member; 5-a second threaded rod; 6-a second nut member; 7-a first bevel gear; 8-a second bevel gear; 9-a third bevel gear; 10-fourth bevel gear; 12-an outer sleeve; 13-a middle sleeve; 14-connecting rods; 15-connecting rod adjusting handle; 151-a post-adjustment nut; 152-post-adjusting the externally threaded tube; 1521-extending a round tube; 153-rear release handle; 154-limiting pin shafts; 16-a unidirectional rotation limiting structure; 1601-first concave-convex surface; 1602-second concave-convex surface; 161-limiting a rotating shaft; 162-limiting tube; 163-compression spring; 200-bending handle connecting pipe assembly; 21-a bending handle; 22-bending the sheath; 300-front-rear adjustment assembly; 31-a nut; 32-an externally threaded tube; 321-a limiting pin accommodating hole; 33-a locking member; 310-stress relief structure; 311-connecting pipes; 3111-displacement chute; 312-limiting pins; 400-auxiliary support.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "proximal", "distal", "front", "rear", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In particular, in the present utility model, the end of the medical device close to the operator is the proximal end of the medical device during surgery, and the end of the medical device entering the blood vessel of the patient is the distal end of the medical device (the front end of the medical device is the distal end, and the rear end of the medical device is the proximal end).

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Example 1

The present embodiment provides a clip transporting apparatus, referring to fig. 1 to 7, which includes a main manipulation handle take-over assembly 100, a bending handle take-over assembly 200, and an outer sleeve swing control assembly. Wherein: specifically, as shown in fig. 1 to 3: for the main control handle adapter assembly 100, at least comprises a main handle shell 11, a first upper clamping arm traction wire handle, a second upper clamping arm traction wire handle, an outer sleeve 12, a middle sleeve 13 and a connecting rod 14; the distal end of the first upper clamp arm traction wire handle and the distal end of the second upper clamp arm traction wire handle are both connected to the main handle shell 11, and the inner cavities are both communicated with the inner cavity of the main handle shell 11; the proximal end of the outer sleeve 12 is fixedly connected to the main handle shell 11 and is communicated with the inner cavity of the main handle shell 11; the proximal end of the middle sleeve 13 is fixedly connected inside the outer sleeve 12, a stay wire channel for communicating the proximal end and the distal end of the outer sleeve 12 is arranged between the middle sleeve 13 and the outer sleeve 12, the distal end of the middle sleeve 13 extends out of the outer sleeve 12, and the distal end of the middle sleeve 13 is provided with a mounting part for being in threaded connection or clamped with the proximal end of a fixing seat of the clamp; the connecting rod 14 passes through the middle sleeve 13, the outer sleeve 12 and the main handle housing 11 in sequence from the distal end to the proximal end, and the distal end pipe wall of the connecting rod 14 is provided with a threaded connection portion for being screwed to the proximal end of the driving rod 1 of the jaw. The main operating handle take over assembly 100 is constructed and delivers the release jaw in the same manner as the prior art publication CN113940791a and CN113940792A, and is designed primarily for the jaw of the patents CN113940791a and CN 113940792A.

In operation, the clamping device is loaded at the distal end of the clamping device conveying device, and the distal end of the middle sleeve 13 is in threaded connection or clamped on the mounting part at the proximal end of the fixing seat of the clamping device; the distal threaded connection of the connecting rod 14 is screwed to the proximal end of the driving rod 1 of the jaw; a first traction wire is arranged on a threading hole of one upper clamping arm of the clamp, so that two ends of the first traction wire pass through a stay wire channel between the middle sleeve 13 and the outer sleeve 12 and the main handle shell 11, then the first upper clamping arm traction wire handle is penetrated out, and the proximal end side of the first upper clamping arm traction wire handle is tensioned and fixed on the first upper clamping arm traction wire handle; the second traction wire is arranged on the threading hole of the other upper clamping arm of the clamp, so that the two ends of the second traction wire pass through the stay wire channel between the middle sleeve 13 and the outer sleeve 12 and the main handle shell 11, then the second upper clamping arm traction wire handle is penetrated out, and the proximal end side of the second upper clamping arm traction wire handle is tensioned and fixed on the second upper clamping arm traction wire handle. During operation, the opening and closing of the two upper clamping arms of the clamp can be controlled by tightening or releasing the first traction wire and the second traction wire; the connecting rod 14 is pushed and pulled relative to the middle sleeve 13, so that the driving rod 1 of the clamp device can be driven to move forwards and backwards, and further the two lower clamp arms of the clamp device are driven to open and close. Specifically, the first traction wire and the second traction wire are pulled in the proximal direction so as to enable the two upper clamping arms to be in a furled closed state, and the connecting rod 14 is pushed in the distal direction relative to the middle sleeve 13 so as to enable the two lower clamping arms to be closed, so that the clamp is in a completely furled state; then, the forceps are delivered to the heart in a puncturing manner by using the forceps delivery device, under the three-dimensional ultrasonic guidance, the two lower arms of the forceps penetrate through the middle parts of two leaves of the mitral valve, the connecting rod 14 is retracted towards the proximal direction relative to the middle sleeve 13, so that the two lower arms of the forceps are opened, and then the whole forceps delivery device is retracted towards the proximal direction, so that one lower arm pulls one leaf of the mitral valve, and the other lower arm pulls the other leaf of the mitral valve; thereafter, releasing the first and second traction wires such that one leaflet of the mitral valve is clamped between one lower and one upper clamping arms of the jaw, and the other leaflet of the mitral valve is clamped between the other lower and upper clamping arms of the jaw; then, the whole forceps holder conveying device is retracted in the proximal direction, and meanwhile, the connecting rod 14 is pushed in the distal direction relative to the middle sleeve 13, so that the two lower clamping arms of the forceps holder are completely folded with the two upper clamping arms, and finally the middle parts of two leaves of the mitral valve are clamped, so that the mitral valve is changed from a large single hole to a small double hole in the systole, and the mitral regurgitation is reduced; finally, the connecting rod 14 is reversely rotated relative to the middle sleeve 13, the connecting rod 14 is separated from the proximal end of the driving rod 1 of the clamp device, the outer sleeve 12, the middle sleeve 13, the connecting rod 14 and the traction wires of the clamp device conveying device are withdrawn from the patient, and the clamp device is left in the patient.

However, when the forceps holder is delivered into the human body by the forceps holder delivery device through the outer sleeve 12, the middle sleeve 13 and the connecting rod 14, it is difficult to ensure that the forceps holder is positioned at the middle position between the two leaflets of the mitral valve along the direction of the coaptation edge, and the surgical effect is completely dependent on the degree of purity of the doctor's technique, so that the surgical effect is not ideal.

Therefore, in this embodiment, based on the structure of the main control handle adapter assembly 100, the outer sleeve swing control assembly is additionally provided to control the outer sleeve 12 to swing along the direction of the mating edge between the two leaves of the mitral valve, so as to help the front end of the outer sleeve 12 to reach the relatively central position of the mating edge between the two leaves of the mitral valve with the front end of the middle sleeve 13 and the front end of the connecting rod 14 in a biased manner, thereby improving the positioning accuracy of the input position of the forceps.

Specifically, in this embodiment, the outer sleeve swing control assembly includes a first outer sleeve control wire, a second outer sleeve control wire, a transmission assembly, and a driving portion; the front ends of the first outer sleeve control wire and the second outer sleeve control wire are respectively connected to the front pipe wall of the outer sleeve 12, and projection points of the front ends of the first outer sleeve control wire and the second outer sleeve control wire on the same radial circumferential line of the outer sleeve 12 are respectively positioned on the same diameter of the circle where the same radial circumferential line is positioned; the connection mode includes but is not limited to binding or bonding after perforation; the rear end of the first outer sleeve control wire and the rear end of the second outer sleeve control wire are respectively connected with the transmission assembly, the transmission assembly is arranged in the inner cavity of the main handle shell 11, the driving part is arranged in the main handle shell 11, one part of the driving part is positioned outside the main handle shell 11, and the other part is connected with the transmission assembly. The drive section is configured to control actuation of the transmission assembly to pull the first outer sleeve control wire rearward and release the second outer sleeve control wire forward to deflect the front end of the outer sleeve 12 in a first direction under a first operating condition, and to pull the first outer sleeve control wire forward and pull the second outer sleeve control wire rearward to deflect the front end of the outer sleeve 12 in a second direction opposite the first direction under a second operating condition. The whole structure is simple, convenient and easy to control.

Among them, there are various alternative structures of the driving part and the transmission assembly, such as, but not limited to, as shown in fig. 1 to 7, with particular reference to fig. 4, 6 and 7, preferably the driving part comprises a driving rod 1 and a knob 2; the transmission assembly comprises a first threaded rod 3, a first nut member 4, a second threaded rod 5, a second nut member 6, a first bevel gear 7, a second bevel gear 8, a third bevel gear 9 and a fourth bevel gear 10. The front-back direction is taken as the axial direction: the outer sleeve swing control assembly further comprises a mounting seat 110 fixedly mounted in the inner cavity of the main handle shell 11, the mounting seat 110 comprises a front plate 111, an axial connecting pipe 113 and a rear plate 112, the front plate 111 and the rear plate 112 extend along the radial plane of the main handle shell 11 and are fixed on the inner wall of the main handle shell 11, and the axial connecting pipe 113 is connected with the front plate 111 and/or the rear plate 112. The two ends of the first threaded rod 3 and the two ends of the second threaded rod 5 are respectively rotatably installed on the front plate 111 and the rear plate 112, the first nut piece 4 is in threaded sleeve joint with the outside of the first threaded rod 3, the second nut piece 6 is in threaded sleeve joint with the outside of the second threaded rod 5, a first axial limit rail and a second axial limit rail are arranged on the pipe wall of the axial connecting pipe 113, the first nut piece 4 is axially limited on the first axial limit rail, and the second nut piece 6 is axially limited on the second axial limit rail, wherein. By "axial limit" it is meant that the first nut member 4 and the second nut member 6 are each only slidable back and forth relative to the respective axial limit rail and are not rotatable; the rear end of the first outer sleeve control wire is connected to the first nut member 4, and the rear end of the second outer sleeve control wire is connected to the second nut member 6. The driving rod 1 penetrates through the side wall of the main handle shell 11 in the radial direction and is rotatably arranged on the mounting seat 110, the first bevel gear 7 and the second bevel gear 8 are fixed at a position of the driving rod 1 in the inner cavity of the main handle shell 11 at intervals, the third bevel gear 9 is fixed at the rear end of the first threaded rod 3 and is meshed with the first bevel gear 7, and the fourth bevel gear 10 is fixed at the rear end of the second threaded rod 5 and is meshed with the second bevel gear 8; the first bevel gear 7, the second bevel gear 8, the third bevel gear 9, the fourth bevel gear 10, the first threaded rod 3 and the second threaded rod 5 are configured in a rotation direction, so that the driving rod 1 can drive the first nut member 4 to slide forwards relative to the first threaded rod 3 and drive the second nut member 6 to slide backwards relative to the second threaded rod 5 under the condition that the driving rod 1 rotates forwards; in the case of reverse rotation of the driving rod 1, the driving rod 1 can drive the first nut member 4 to slide backward relative to the first threaded rod 3 and drive the second nut member 6 to slide forward relative to the second threaded rod 5; the knob 2 is arranged outside the main handle shell 11 and is connected to a part of the driving rod 1 outside the main handle shell 11, and is used for driving the driving rod 1 to rotate in the forward direction or the reverse direction.

In order not to interfere with the passage of the outer sleeve 12, the middle sleeve 13 and the connecting rod 14 through the main handle housing 11, in an alternative implementation of this embodiment, preferably, perforations are provided in the middle of the front plate 111 and the middle of the rear plate 112, respectively, in the mounting block 110.

In addition, in order to facilitate assembly, in an alternative implementation manner of the present embodiment, it is preferable that, in the mounting seat 110, the axial connection pipe 113 includes a front connection pipe 1131 integrally connected to the rear end of the front plate 111 and a rear connection pipe 1132 integrally connected to the front end of the rear plate 112, the front connection pipe 1131 and the rear connection pipe 1132 are mutually sleeved, and mutually sleeved parts can be mutually clamped or connected in an interference manner, so as to increase connection firmness.

In addition, in an alternative implementation manner of this embodiment, it is preferable that at least two control wire holes are respectively provided on the first nut member 4 and the second nut member 6, and the rear ends of the corresponding control wires are fixed to the corresponding nut members in a manner of sequentially passing through the at least two control wire holes and then knotting.

In addition, in the present embodiment, preferably, the mounting base 110: the first axial limit rail and the second axial limit rail are respectively a first axial convex strip and a second axial convex strip which are symmetrically arranged on the outer pipe wall of the axial connecting pipe 113 by taking the axial central axis of the axial connecting pipe 113 as a symmetrical axis; the outer circumferential surface of the first nut member 4 is provided with a first buckling groove, and the outer circumferential surface of the second nut member 6 is provided with a second buckling groove; the first axial convex strip is buckled with the first buckling groove, and the second axial convex strip is buckled with the second buckling groove.

In addition, the following problems remain during implantation of the jaw: it is difficult to ensure that the jaw device is axially aligned with the plane of the annulus, and in the prior art, the pushing and retracting positions of the wallet device are adjusted by moving the conveyor in an integral manner, the operation technical requirements of a doctor are very high in the adjustment process, and a little attention is paid to the adjustment process, so that multiple moving distances are caused, which has obvious adverse effects on rapidly completing the operation and placing the jaw device in a designated position as accurately as possible.

In contrast, in an alternative implementation of the present embodiment, a bending handle take-over assembly 200 and a front-back adjustment assembly 300 for pushing or retracting the main handle take-over assembly 100 forward or backward with respect to the bending handle take-over assembly 200 are further provided to assist in the positioning of the main handle take-over assembly 100 in the operation.

Referring to fig. 1 to 4, the bending handle adapter assembly 200 includes a bending handle 21, a bending sheath 22, and a bending wire (not shown), wherein a proximal end of the bending sheath 22 is connected to a distal end of the bending handle 21 and is communicated with an inner cavity of the bending handle 21, one end of the bending wire is connected to a distal end of the bending sheath 22, and the other end of the bending wire is penetrated from the bending handle 21 and is wound or pressed on the bending handle 21 by a handle back cover.

As shown in fig. 4, the front-rear adjustment assembly 300 includes a nut 31, an externally threaded tube 32, and a locking member 33; one of the distal circumferential surface of the nut 31 and the proximal circumferential surface of the bending handle 21 is provided with a circumferential limit groove, the other is provided with a limit protrusion, and the limit protrusion is limited in the circumferential limit groove so that the nut 31 can rotate relative to the bending handle 21; the distal end of the external threaded tube 32 is threaded inside the nut 31 and the external threaded tube 32 extends into the lumen of the buckle handle 21, and the outer sleeve 12 in the main operating handle adapter assembly 100 sequentially passes through the external threaded tube 32, the buckle handle 21 and the buckle sheath 22 from the proximal end to the distal end. The locking member 33 is mounted to the externally threaded tube 32 to lock the outer sleeve 12 to the externally threaded tube 32 in the locked state and unlock the outer sleeve 12 to the externally threaded tube 32 in the unlocked state; in the locked state, the nut 31 is turned relative to the twist grip 21, so that the main control grip nozzle assembly 100 can be pushed forward or retracted backward relative to the twist grip nozzle assembly 200.

In operation, the main control handle adapter assembly 100 can be rotated relative to the external threaded tube 32 in the unlocking state, the external sleeve 12 is locked to the external threaded tube 32 after the main control handle adapter assembly is rotated in place, the distal end of the bending sheath tube 22 is controlled to bend by adjusting the length of the bending wire, and the distal end of the external sleeve 12 penetrating through the bending sheath tube 22 is further bent, so that the distal end of the middle sleeve 13 and the distal end of the connecting rod 14 are further bent correspondingly, and the function of adjusting the angle of the clamp can be achieved, so that the clamp is axially aligned to the plane of the valve annulus; in addition, according to the pushing distance of the clamp device, the clamp device is controlled to enter the adjusting mode above or below the mitral valve leaflet, and the nut 31 is rotated in the locking state that the outer sleeve 12 is locked on the outer threaded tube 32, so that the main control handle connecting tube assembly 100 is pushed forwards or retracted backwards relative to the bending handle connecting tube assembly 200, the adjusting mode is simple and convenient, the adjusting precision is higher, the requirement on the operation technical level of a doctor in the adjusting process can be reduced, the moving distance is ensured to be more accurate, and the clamp device has great positive effects on accurately placing the clamp device in a designated position as much as possible, the operation is also facilitated to be completed quickly, and the operation risk is further reduced.

In this embodiment, the locking member 33 has various locking structures, including, but not limited to, as shown in fig. 1 to 6, the locking member 33 is a screw, a locking threaded hole penetrating through the wall of the external threaded tube 32 is provided on the proximal wall of the external threaded tube 32, the screw is screwed into the locking threaded hole, and in the locked state, the screw is screwed into the locking threaded hole to tightly lock the external sleeve 12 to the external threaded tube 32, and when the unlocked state needs to be switched, the screw is unscrewed.

With continued reference to fig. 4, in some alternative implementations of the present embodiment, it is preferable that the fore-aft adjustment assembly 300 further includes a stress relief structure 310, where the stress relief structure 310 is configured to enable the outer sleeve 12 to move forward and backward relative to the outer threaded tube 32 while rotating relative to the outer threaded tube 32 when the locking member 33 is in the unlocked state and the main control handle adapter assembly 100 rotates relative to the outer threaded tube 32 to fine adjust the angle of the clamp, so as to relieve the frictional torsion stress between the outer tube wall of the outer sleeve 12 and the inner tube wall of the bending sheath 22 when the outer sleeve 12 and the bending sheath 22 rotate relative to each other, so as to achieve at least the following advantages: (1) Avoiding the breakage of the outer sleeve 12 or the bending sheath tube 22 during multiple rotations, and prolonging the service life of the clamp conveying device; (2) In the process that the locking member 33 is in the locking state and the nut 31 is rotated, so that the main control handle adapter assembly 100 is pushed forward or retracted backward relative to the bending handle adapter assembly 200, the outer sleeve 12 is prevented from rotating relative to the bending sheath 22 while moving forward and backward under the friction torsion stress between the outer sleeve 12 wall and the inner tube wall of the bending sheath 22, and the positioning accuracy of the clamp is affected.

In particular, the stress relief structure 310 may include, but is not limited to, a connecting tube 311 and a stop pin 312 as shown in FIG. 4; the proximal end of the connection tube 311 is fixedly connected to the distal end of the main handle housing 11 and communicates with the inner cavity of the main handle housing 11, and the outer sleeve 12 passes through the connection tube 311. A displacement chute 3111 extending circumferentially and in a wave shape is arranged on the outer tube wall at the distal end of the connecting tube 311; a stopper pin accommodating hole 321 is provided in the wall of the externally threaded pipe 32, one end of the stopper pin 312 is positioned inside the displacement chute 3111 and the other end extends into the stopper pin accommodating hole 321. And preferably, but not limited to, the stop pin 312 includes at least a first stop pin and a second stop pin that are symmetrical about a central axis of the externally threaded tube 32. When the main handle adapter assembly 100 is rotated with respect to the male pipe 32 in the unlocked state, the connecting pipe 311 is rotated with respect to the male pipe, and the connecting pipe 311 is moved back and forth with respect to the male pipe 32 along the displacement chute 3111.

In this embodiment, the two lower arms of the clamping device are controlled to open and close, and the connecting rod 14 needs to be pushed and pulled by the relative middle sleeve 13, so that the driving rod 1 of the clamping device can be driven to move back and forth, and for conveniently pushing and pulling the connecting rod 14 by the relative middle sleeve 13, it is preferable, referring to fig. 5, that the main control handle connecting tube assembly 100 further includes a connecting rod adjusting handle 15, where the connecting rod adjusting handle 15 includes a rear adjusting nut 151, a rear adjusting external threaded tube 152 and a rear locking member (not shown). One of the distal end circumferential surface of the rear adjustment nut 151 and the proximal end circumferential surface of the main handle housing 11 is provided with a circumferential limit groove, and the other is provided with a limit projection which is limited inside the circumferential limit groove so that the rear adjustment nut 151 can rotate relative to the main handle housing 11; the distal end of the rear adjustment externally threaded tube 152 is screwed into the interior of the rear adjustment nut 151 and the rear adjustment externally threaded tube 152 extends into the inner cavity of the main handle housing 11, and the connecting rod 14 passes through the rear adjustment externally threaded tube 152 and is locked to the rear adjustment externally threaded tube 152 by the rear locking member. In the locked state, the rear adjusting nut 151 is rotated relative to the main handle housing 11, so that the connecting rod 14 can be pushed forward or retracted backward relative to the outer sleeve 12 and the middle sleeve 13.

Further preferably, in this embodiment, as shown in fig. 5 and 7, the connecting rod adjusting handle 15 further includes a rear release handle 153; the distal end of the connecting rod 14 is fixedly connected to the rear release handle 153; the proximal end of the rear adjusting external threaded tube 152 is fixedly connected with an extension circular tube 1521, the distal end of the shell of the rear release handle 153 is sleeved outside the extension circular tube 1521 and the rear release handle 153 can rotate relative to the extension circular tube 1521; and, a unidirectional rotation limiting structure 16 is provided between the rear release handle 153 and the rear adjustment male screw 152, and the unidirectional rotation limiting structure 16 is configured to allow the rear release handle 153 to unidirectional rotate in the opposite rotation direction with respect to the rear adjustment male screw 152, with the rotation direction of the threaded connection portion of the distal end of the connecting rod 14 when rotating away from the proximal end of the driving rod 1 of the jaw. The unidirectional rotation limiting structure 16 mainly rotates the connecting rod 14 in the opposite direction relative to the middle sleeve 13 so as to avoid misoperation of the connecting rod 14 after the forward rotation relative to the middle sleeve 13 when the connecting rod 14 is separated from the proximal end of the driving rod 1 of the jaw. Preferably, but not limited to, a limiting pin 154 is further disposed between the housing of the rear release handle 153 and the rear adjustment externally threaded tube 152, the limiting pin 154 is detachably mounted between the housing of the rear release handle 153 and the rear adjustment externally threaded tube 152, and the limiting pin 154 fixes the housing of the rear release handle 153 and the rear adjustment externally threaded tube 152 together when the connecting rod 14 does not need to be withdrawn, so as to avoid misoperation of the reverse rotation connecting rod 14 during operation, and the jaw is separated from the distal end of the connecting rod 14; when the connecting rod 14 needs to be separated from the proximal end of the driving rod 1 of the forceps holder, the handle 153 can be released after the limiting pin 154 is removed and rotated reversely relative to the middle sleeve 13, so that the connecting rod 14 is rotated reversely to separate the connecting rod 14 from the proximal end of the driving rod 1 of the forceps holder.

In this embodiment, it is further preferable that the one-way rotation limiting structure 16 includes a limiting rotation shaft 161, a limiting tube 162 and a compression spring 163 provided inside the housing of the rear release handle 153, as shown in fig. 8. The proximal end fixedly connected with of back regulation external screw thread pipe 152 extends pipe 1521, the distal end suit of the casing of back release handle 153 is outside in extending pipe 1521, extend the proximal end face of pipe 1521 and form the first unsmooth face 1601 that is formed by a plurality of spacing grooves head and tail connection, the spacing groove link up the pipe wall that extends pipe 1521 along the radial of extending pipe 1521, the spacing groove is including the first junction surface that connects gradually along the anti-rotation, second junction surface and third junction surface, the contained angle of first junction surface and second junction surface towards the proximal end side is greater than 0 degree and less than or equal to 90 degrees, the contained angle of second junction surface and third junction surface towards the proximal end side is greater than 90 degrees and less than 180 degrees. The distal end side of the limit shaft 161 is inserted into the proximal end lumen of the extension barrel 1521, and the proximal end of the limit shaft 161 is connected to the housing of the rear release handle 153. The extension round tube 1521, the limit tube 162 and the compression spring 163 are sleeved outside the limit rotating shaft 161 from the distal end to the proximal end in sequence; the distal end surface of the stopper tube 162 forms a second concave-convex surface 1602 that engages with the proximal end surface of the extension tube 1521. Under the condition that the rear release handle 153 reversely rotates, the limit rotating shaft 161 and the limit tube 162 both rotate synchronously with the shell of the rear release handle 153, and the compression spring 163 makes the limit tube 162 always slide towards the distal direction relative to the limit rotating shaft 161, so that the second concave-convex surface 1602 and the first concave-convex surface 1601 mutually buckle with each other in movement trend.

In an alternative implementation of this embodiment, it is preferable that the main control handle adapter assembly 100 further includes a locking piece traction wire handle, wherein a distal end of the locking piece traction wire handle is connected to a proximal end of the main handle housing 11, and an inner cavity of the locking piece traction wire handle is communicated with an inner cavity of the main handle housing 11, and with reference to patent CN113940791a and patent CN113940792a, two ends of a traction wire that is threaded on a locking piece on the jaw device may be threaded out of the locking piece traction wire handle and then fixed or pressed to the locking piece traction wire handle by a handle rear cover, and a locking state of the locking piece is adjusted by releasing or pulling the traction wire.

Example two

The present embodiment provides a jaw machine transport system, referring to fig. 1, comprising a jaw machine transport device provided in any of the alternative embodiments of the first embodiment.

Since the gripper conveying system provided in this embodiment includes the gripper conveying device described in embodiment one, the gripper conveying system provided in this embodiment can achieve all the beneficial effects that the gripper conveying device in embodiment one can achieve, and the specific structure and the effects that can be achieved can be obtained with reference to each optional or preferred implementation mode in embodiment one.

Referring to fig. 1, in an alternative implementation of the present embodiment, the jaw machine delivery system further comprises an auxiliary support 400; the auxiliary stand 400 includes a chassis and a bracket connected to the chassis for supporting the main handle housing 11 and the bending handle 21 for convenient use by an operator in use.

Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are only required to be seen with each other; the above embodiments in the present specification are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A jaw apparatus delivery device comprising a main handle take over assembly (100); the main control handle connecting pipe assembly (100) at least comprises a main handle shell (11), a first upper clamping arm traction wire handle, a second upper clamping arm traction wire handle, an outer sleeve (12), a middle sleeve (13) and a connecting rod (14); the distal end of the first upper clamp arm traction wire handle and the distal end of the second upper clamp arm traction wire handle are both connected to the main handle shell (11) and the inner cavity is communicated with the inner cavity of the main handle shell (11); the proximal end of the outer sleeve (12) is fixedly connected to the main handle shell (11) and is communicated with the inner cavity of the main handle shell (11); the proximal end of the middle sleeve (13) is fixedly connected to the inside of the outer sleeve (12), a stay wire channel for communicating the proximal end and the distal end of the outer sleeve (12) is arranged between the middle sleeve (13) and the outer sleeve (12), the distal end of the middle sleeve (13) extends out of the outer sleeve (12), and the distal end of the middle sleeve (13) is provided with an installation part for being in threaded connection or clamped connection with the proximal end of a fixing seat of the clamp; the connecting rod (14) sequentially penetrates through the middle sleeve (13), the outer sleeve (12) and the main handle shell (11) from the far end to the near end, and a threaded connection part for being in threaded connection with the near end of the driving rod (1) of the clamp device is arranged on the wall of the far end of the connecting rod (14);

The method is characterized in that:

the clamp conveying device further comprises an outer sleeve swing control assembly;

the outer sleeve swing control assembly comprises a first outer sleeve control wire, a second outer sleeve control wire, a transmission assembly and a driving part; the front ends of the first outer sleeve control wire and the second outer sleeve control wire are respectively connected to the front end pipe wall of the outer sleeve (12), and projection points of the front ends of the first outer sleeve control wire and the second outer sleeve control wire on the same radial circumferential line of the outer sleeve (12) are respectively positioned on the same diameter of a circle where the same radial circumferential line is positioned; the rear end of the first outer sleeve control wire and the rear end of the second outer sleeve control wire are respectively connected with the transmission assembly, the transmission assembly is arranged in the inner cavity of the main handle shell (11), the driving part is arranged in the main handle shell (11), one part of the driving part is positioned outside the main handle shell (11), and the other part of the driving part is connected with the transmission assembly;

the drive portion is configured to control actuation of the transmission assembly to pull back the first outer sleeve control wire and release the second outer sleeve control wire forward to deflect the front end of the outer sleeve (12) in a first direction under a first operating condition, and to pull back the first outer sleeve control wire and pull back the second outer sleeve control wire to deflect the front end of the outer sleeve (12) in a second direction opposite the first direction under a second operating condition.

2. The jaw apparatus delivery device of claim 1, wherein the drive portion comprises a drive rod (1) and a knob (2); the transmission assembly comprises a first threaded rod (3), a first nut piece (4), a second threaded rod (5), a second nut piece (6), a first bevel gear (7), a second bevel gear (8), a third bevel gear (9) and a fourth bevel gear (10);

the front-back direction is taken as the axial direction:

the outer sleeve swing control assembly further comprises a mounting seat (110) fixedly mounted in the inner cavity of the main handle shell (11), the mounting seat (110) comprises a front plate (111), an axial connecting pipe (113) and a rear plate (112), the front plate (111) and the rear plate (112) extend along the radial plane of the main handle shell (11) and are fixed on the inner wall of the main handle shell (11), and the axial connecting pipe (113) is connected with the front plate (111) and/or the rear plate (112);

the two ends of the first threaded rod (3) and the two ends of the second threaded rod (5) are respectively rotatably arranged on the front plate (111) and the rear plate (112), the first nut member (4) is in threaded sleeve joint with the outside of the first threaded rod (3), the second nut member (6) is in threaded sleeve joint with the outside of the second threaded rod (5), a first axial limit track and a second axial limit track are arranged on the pipe wall of the axial connecting pipe (113), the first nut member (4) is axially limited on the first axial limit track, the second nut member (6) is axially limited on the second axial limit track, the rear end of the first outer sleeve control wire is connected with the first nut member (4), and the rear end of the second outer sleeve control wire is connected with the second nut member (6);

The driving rod (1) penetrates through the side wall of the main handle shell (11) in the radial direction and is rotatably mounted on the mounting seat (110), the first bevel gear (7) and the second bevel gear (8) are fixed at a position of the driving rod (1) in the inner cavity of the main handle shell (11) at intervals, the third bevel gear (9) is fixed at the rear end of the first threaded rod (3) and is meshed with the first bevel gear (7), and the fourth bevel gear (10) is fixed at the rear end of the second threaded rod (5) and is meshed with the second bevel gear (8); the first bevel gear (7), the second bevel gear (8), the third bevel gear (9), the fourth bevel gear (10), the first threaded rod (3) and the second threaded rod (5) are arranged in a rotation direction so as to drive the first nut member (4) to slide forwards relative to the first threaded rod (3) and drive the second nut member (6) to slide backwards relative to the second threaded rod (5) under the condition that the driving rod (1) rotates forwards; under the condition that the driving rod (1) rotates reversely, the first nut member (4) is driven to slide backwards relative to the first threaded rod (3), and the second nut member (6) is driven to slide forwards relative to the second threaded rod (5);

The knob (2) is arranged outside the main handle shell (11) and connected to a part of the driving rod (1) positioned outside the main handle shell (11) and used for driving the driving rod (1) to rotate forwards or reversely.

3. The gripper conveyor according to claim 2, characterized in that in the mounting base (110) perforations are provided in the middle of the front plate (111) and in the middle of the rear plate (112), respectively.

4. The gripper conveying apparatus according to claim 2, wherein in the mounting base (110), the axial connection pipe (113) includes a front connection pipe (1131) integrally connected to a rear end of the front plate (111) and a rear connection pipe (1132) integrally connected to a front end of the rear plate (112), and the front connection pipe (1131) and the rear connection pipe (1132) are mutually sleeved.

5. The forceps holder conveying device according to claim 2, wherein the first nut member (4) and the second nut member (6) are respectively provided with at least two control wire perforations, and the rear ends of the corresponding control wires are fixed to the corresponding nut members in a manner of sequentially passing through the at least two control wire perforations and then being knotted.

6. The jaw apparatus delivery device of claim 2, wherein in the mount (110):

The first axial limit rail and the second axial limit rail are respectively a first axial convex strip and a second axial convex strip which are symmetrically arranged on the outer pipe wall of the axial connecting pipe (113) by taking the axial central axis of the axial connecting pipe (113) as a symmetrical axis;

the outer peripheral surface of the first nut member (4) is provided with a first buckling groove, and the outer peripheral surface of the second nut member (6) is provided with a second buckling groove;

the first axial protruding strips are mutually buckled with the first buckling grooves, and the second axial protruding strips are mutually buckled with the second buckling grooves.

7. The jaw apparatus delivery device of claim 1, further comprising a buckle handle take-over assembly (200) and a fore-aft adjustment assembly (300) for pushing forward or retracting back the main steering handle take-over assembly (100) relative to the buckle handle take-over assembly (200);

the bending handle connecting pipe assembly (200) comprises a bending handle (21), a bending sheath tube (22) and a bending wire, wherein the proximal end of the bending sheath tube (22) is connected to the distal end of the bending handle (21) and is communicated with the inner cavity of the bending handle (21), one end of the bending wire is connected to the distal end of the bending sheath tube (22), and the other end of the bending wire penetrates out of the bending handle (21) and is wound or pressed on the bending handle (21);

The front-rear adjustment assembly (300) includes a nut (31), an externally threaded tube (32), and a locking member (33);

one of the peripheral surface of the distal end of the nut (31) and the peripheral surface of the proximal end of the bending handle (21) is provided with a circumferential limit groove, the other is provided with a limit protrusion, and the limit protrusion is limited in the circumferential limit groove so that the nut (31) can rotate relative to the bending handle (21); the distal end of the external thread tube (32) is in threaded connection with the inside of the nut (31), the external thread tube (32) extends into the inner cavity of the bending adjustment handle (21), and the outer sleeve (12) in the main control handle connecting tube assembly (100) sequentially penetrates through the external thread tube (32), the bending adjustment handle (21) and the bending adjustment sheath tube (22) from the proximal end to the distal end;

the locking member (33) is mounted to the externally threaded tube (32) to lock the outer sleeve (12) to the externally threaded tube (32) in a locked state, and unlock the outer sleeve (12) to the externally threaded tube (32) in an unlocked state;

in the locking state, the nut (31) is rotated relative to the bending handle (21), so that the main control handle connecting pipe assembly (100) can be pushed forwards or retracted backwards relative to the bending handle connecting pipe assembly (200).

8. The jaw apparatus transport device of claim 7, wherein: the front-back adjusting assembly (300) further comprises a stress relief structure (310), wherein the stress relief structure (310) is used for enabling the outer sleeve (12) to move back and forth relative to the outer threaded tube (32) while rotating relative to the outer threaded tube (32) under the condition that the locking member (33) is in an unlocking state and the main control handle connecting tube assembly (100) rotates relative to the outer threaded tube (32), so that friction torsion stress between the outer tube wall of the outer sleeve (12) and the front inner tube wall of the bending adjusting sheath tube (22) is relieved when the outer sleeve (12) and the bending adjusting sheath tube (22) rotate relative to each other.

9. The jaw apparatus transport device of claim 8, wherein: the stress relief structure (310) comprises a connecting tube (311) and a limiting pin (312);

the proximal end of the connecting pipe (311) is fixedly connected to the distal end of the main handle shell (11) and is communicated with the inner cavity of the main handle shell (11), and the outer sleeve (12) passes through the connecting pipe (311); a displacement chute (3111) extending circumferentially and in a wave shape is arranged on the outer pipe wall at the far end of the connecting pipe (311);

a limiting pin accommodating hole (321) is formed in the pipe wall of the external threaded pipe (32), one end of the limiting pin (312) is limited inside the displacement chute (3111), and the other end of the limiting pin extends into the limiting pin accommodating hole (321).

10. A jaw machine delivery system, characterized by: comprising a jaw apparatus delivery device according to any one of claims 1 to 9.

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