CN119745448B

CN119745448B - Knotters and Systems

Info

Publication number: CN119745448B
Application number: CN202411970860.8A
Authority: CN
Inventors: 廖海燕; 王琛伟; 康立标
Original assignee: Shenzhen Wuyou Medical Technology Co ltd
Current assignee: Shenzhen Wuyou Medical Technology Co ltd
Priority date: 2024-12-30
Filing date: 2024-12-30
Publication date: 2025-10-31
Anticipated expiration: 2044-12-30
Also published as: CN119745448A

Abstract

The application discloses a knotter and a system. In the knotter, the extrusion assembly is arranged in the mounting pipe and is close to the second end, the push-pull assembly is arranged in the mounting pipe, the extrusion assembly is extruded or released through the extrusion end, and the ball head end is connected with the wrench in a universal mode, so that in the process that the wrench drives the push-pull assembly to extrude or release the extrusion assembly, even if the movement stroke of the push-pull assembly relative to the mounting pipe is long, the ball head end can be driven by the self-adaptive wrench and can keep moving along the axial direction of the mounting pipe, therefore, the part of the push-pull assembly extending out of the mounting pipe is always kept in the axial direction of the mounting pipe and cannot bend relative to the mounting pipe, the push-pull assembly can smoothly move along the axial direction of the mounting pipe, meanwhile, the acting force required for driving the push-pull assembly to move can be reduced, the operation time is shortened, the operation efficiency is improved, and the service life of the knotter is prolonged.

Description

Knotter and system

Technical Field

The application relates to the technical field of medical instruments, in particular to a knotter and a system.

Background

For the operation involving suturing, after suturing of tissue is completed, it is necessary to press a lock ring fitted over the surgical suture by a knotter so that at least part of the inner wall of the lock ring is engaged with and clamps the suture, and then cut off the excess suture on the proximal side of the lock ring, thereby completing the operation.

Knotters generally comprise an interconnected suture locking unit and an operating unit, the operating unit comprising a handle for a medical staff to grip and a wrench, the operating unit being adapted to control a push-pull assembly of the suture locking unit to drive an extrusion assembly to perform an extrusion lock ring in a mounting tube to clamp a suture. The existing operation unit is usually connected with one end of the push-pull assembly extending out of the installation tube through a rotating shaft, and the operation unit drives the push-pull assembly to move relative to the installation tube, because the wrench of the operation unit rotates along the rotating axis, the movement track of the rotating shaft is arc-shaped, but not straight-line-shaped overlapped with the axial direction of the installation tube, when the movement path of the rotating shaft is longer, the part, connected with the wrench of the operation unit, of one end of the push-pull assembly extending out of the installation tube can be bent, the operation unit can not drive the push-pull member to move relative to the installation tube, the push-pull member can not drive the extrusion assembly to extrude the locking ring, and therefore the locking ring can not lock the suture, and the result of operation failure can be caused.

Disclosure of Invention

The application mainly aims to provide a knotter and a system, which are used for solving the problem that the knotter is damaged and cannot be used due to the fact that a push-pull component cannot move along the axial direction of a mounting tube in the prior art.

In one aspect, the present application provides a knotter comprising a handle;

a mounting tube having opposed first and second ends, the first end being connected to the handle and the second end extending beyond the handle;

a compression assembly disposed within the mounting tube proximate the second end, and

Spanner and push-and-pull subassembly, spanner rotatable connection is in on the handle, the push-and-pull subassembly has relative extrusion end and bulb end, the bulb end stretch out the installation tube and in the handle with spanner universal connection, the extrusion end is located in the installation tube and be close to the second end, the spanner is under the effect of external force relatively the handle rotates, and drive push-and-pull subassembly is followed the axial motion of installation tube, in order to drive the extrusion subassembly extrudes or releases the extrusion ring.

Further, the wrench comprises a rotating part, a connecting part and an operating part, wherein the rotating part is rotatably connected to the handle and is positioned between the connecting part and the operating part, the connecting part is rotatably connected with the ball end, the operating part extends out of the handle and drives the wrench to rotate along the rotating part under the action of external force, so that the connecting part drives the push-pull assembly to move along the axial direction of the mounting pipe;

the push-pull assembly comprises a ball head part and a push-pull part, the ball head part comprises a connecting rod part and a ball head end, the push-pull part comprises an extrusion end, and one end of the push-pull part, which is far away from the extrusion end, is connected with one end of the connecting rod part, which is far away from the ball head end;

The connecting part structure is formed with swinging groove, spacing groove and breach, the breach communicates respectively the swinging groove with the same side of spacing groove is used for supplying the bulb end gets into the spacing groove, and supplies connecting rod portion gets into the swinging groove, the swinging groove with the spacing groove intercommunication, just the swinging groove is the V style of calligraphy towards keeping away from the direction of spacing groove.

Further, the connecting rod part can pass through the communication port of the swing groove and the limit groove, and the ball head end is limited from entering the swing groove from the limit groove;

the distance between the communication ports along the direction perpendicular to the rotation direction of the handle is smaller than the diameter of the ball head end and larger than the diameter of the connecting rod portion.

Further, the handle configuration forms a sliding cavity located in a direction of movement of the push-pull assembly away from the compression assembly;

The push-pull assembly comprises a push-pull piece, a limiting piece and a ball head piece, wherein the limiting piece is connected between the ball head piece and one end of the push-pull piece extending out of the mounting pipe and is slidably limited in the sliding cavity along the movement direction of the push-pull piece, the push-pull piece is structured to form the extrusion end, and the ball head piece is structured to form the ball head end;

Wherein the limiting piece, the push-pull piece and the ball head piece are detachably connected;

or the limiting piece, the push-pull assembly and the ball head piece are integrally formed;

or the limiting piece and the push-pull piece are integrally formed, and the ball head piece is detachably connected with the push-pull piece and/or the limiting piece;

Or the limiting piece and the ball head piece are integrally formed, and the push-pull piece is detachably connected with the ball head piece and/or the limiting piece;

and/or, the knotter further comprises a first elastic piece, wherein the first elastic piece is arranged in the handle, is connected between the wrench and the handle and is used for driving the handle to rotate so as to drive the push-pull assembly to remove extrusion on the extrusion assembly;

The first elastic piece drives the handle to rotate through pulling force so as to drive the push-pull assembly to remove extrusion of the extrusion assembly, and the first elastic piece is stretched in an elastic deformation range in the process that the spanner rotates relative to the handle so as to drive the push-pull assembly to extrude the extrusion assembly;

or the first elastic piece drives the handle to rotate through pressure so as to drive the push-pull assembly to remove extrusion of the extrusion assembly, and the first elastic piece is extruded in an elastic deformation range in the process that the spanner rotates relative to the handle so as to drive the push-pull assembly to extrude the extrusion assembly;

And/or, the installation pipe includes first pipe and the second pipe of intercommunication each other, first pipe connection be in between the second pipe with the handle, just the external diameter of first pipe is less than the external diameter of second pipe, extrusion subassembly is located in the second pipe, push-and-pull subassembly wears to locate first pipe, just extrusion end stretches out first pipe and is located in the second pipe, the bulb end stretches out first pipe and is located in the handle.

Further, the pressing assembly comprises a first pressing part and a second pressing part, wherein the first pressing part is rotatably connected in the mounting pipe and is configured to form a first pressing part, the second pressing part is connected on the mounting pipe and is configured to form a second pressing part, and a pressing cavity is formed between the second pressing part and the first pressing part and is used for accommodating the pressing ring;

The first extrusion part is driven by the push-pull assembly to have an initial position and an extrusion position, the first extrusion part is far away from the second extrusion part under the condition that the first extrusion part is positioned at the initial position, the cavity volume of the extrusion cavity is maximum, the extrusion ring can enter and exit the extrusion cavity, the first extrusion part is close to the second extrusion part under the condition that the first extrusion part is positioned at the extrusion position, the cavity volume of the extrusion cavity is reduced, and the extrusion ring is extruded and locks a penetrated suture;

And/or the first extrusion is made of a rigid structural member;

and/or the second extrusion part is fixedly connected to the mounting tube, or the second extrusion part and the mounting tube are integrally formed;

and/or, the knotter further comprises an end cover, wherein the end cover covers the second end and is provided with a limiting hole communicated with the extrusion cavity, and the limiting hole is used for allowing the main body part of the extrusion ring to pass through and limiting the flange part of the extrusion ring;

the end cover and the second extrusion piece are integrally formed, or the end cover and the mounting pipe are integrally formed, or the end cover is fixedly connected to the mounting pipe.

Further, the push-pull assembly comprises a connecting rod part, wherein the connecting rod part is connected between the ball head end and the extrusion end, and the connecting rod part is provided with a clamping part in a structure, and the clamping part is close to the extrusion end;

the knotter also comprises a cutter, wherein the cutter is clamped with the clamping part and is limited between the connecting rod part and the inner wall of the corresponding mounting pipe;

one of the cutter and the clamping part is provided with a boss, the other of the cutter and the clamping part is provided with a clamping groove, and the boss is in fit clamping with the clamping groove;

And/or the mounting tube structure is provided with a wire passing hole and a wire passing cavity, the wire passing cavity is communicated between the extrusion cavity and the wire passing hole, and a suture passing through the extrusion ring sequentially passes through the wire passing cavity and the wire passing hole and extends out of the mounting tube;

The push-pull assembly can sequentially reach a first position, a second position and a third position along the direction that the first end points to the second end, the first extrusion part is positioned at the initial position under the condition that the push-pull assembly is positioned at the first position, and the cutter is far away from the threading space;

The first extrusion part is positioned at the extrusion position under the condition that the push-pull assembly is positioned at the second position, and the cutter is close to the threading space;

with the push-pull assembly in the third position, the first extrusion is in the extruded position, and the cutter is positioned in the thread passing space and cuts off the suture passing through the thread passing space.

Further, the first extrusion part further comprises a first connecting arm and a first protruding part, the first extrusion part and the first protruding part are respectively connected to two opposite ends of the first connecting arm, the first extrusion part is close to the second end and faces the second extrusion part, the first protruding part is far away from the second end and faces away from the first extrusion part, the first connecting arm is rotatably connected in the mounting pipe through a rotating shaft, and the rotating shaft is close to the first protruding part;

The push-pull assembly comprises a connecting rod part, the connecting rod part is connected between the extrusion end and the ball head end, the extrusion end comprises a second convex part and a second connecting arm, the second connecting arm is connected between the second convex part and the connecting rod part, the second convex part faces to the first convex part, and a avoidance groove facing to the first convex part is formed between the second convex part and the connecting rod part;

the second convex portion presses the first convex portion with the first pressing portion in the initial position, the first pressing portion being away from the second pressing portion; under the condition that the first extrusion part is positioned at the extrusion position, the second convex part extrudes the first connecting arm to rotate along the rotating shaft so as to enable the first extrusion part to be close to the second extrusion part, and the first convex part is positioned in the avoidance groove;

Wherein, one side of the first connecting arm facing away from the first extrusion part gradually inclines upwards along the direction that the first end points to the second end.

Further, the first extrusion part further comprises a first connecting arm and a third extrusion part, the first extrusion part and the third extrusion part are respectively connected to two opposite ends of the first connecting arm, the first extrusion part is close to the second end and faces the second extrusion part, the third extrusion part is far away from the second end, the first connecting arm is rotatably connected in the mounting pipe through a rotating shaft, and the rotating shaft is close to the third extrusion part;

The knotter also comprises a second elastic piece, wherein the second elastic piece is connected between the third extrusion part and the inner wall of the mounting tube and is used for driving the first extrusion part to reset from the extrusion position to the initial position;

The second elastic piece is propped between the third extrusion part and the inner wall of the mounting pipe far away from the second extrusion part, and is extruded and deformed in an elastic range in the process that the first extrusion part moves from the initial position to the extrusion position;

Or the second elastic piece is connected between the third extrusion part and the inner wall of the mounting pipe, which is close to the second extrusion part, and is stretched and deformed in an elastic range in the process of moving the first extrusion part from the initial position to the extrusion position.

The second connecting arm penetrates through the middle part of the metal elastic piece of the annular structure, and the metal elastic piece is propped between the inner wall of the mounting tube and the third extrusion part;

The metal elastic sheet comprises a first metal sheet and a second metal sheet, the first metal sheet is of an arc-shaped structure with an opening facing the second connecting arm, the second metal sheet is fixedly connected to the inner wall of the mounting tube, the second metal sheet is of an arc-shaped structure with an opening facing the first metal sheet, and the first metal sheet and the second metal sheet are connected with each other to form a hollow annular structure;

the first metal sheet is of an elastic structure;

or the second metal sheet is of an elastic structure;

Or the first metal sheet and the second metal sheet are both elastic structures.

In another aspect, the present application also provides a knotter system comprising a knotter as any one of the above, an

The thread hooking device comprises a hooking piece and a thread loop, the hooking piece comprises a hook part and a pulling part, the pulling part is connected with one end of the hook part, the pulling part passes through the extrusion ring and is sleeved on the thread loop, and the thread loop is used for passing a suture and enabling the part of the suture to pass through the pulling part after the thread loop is removed;

wherein the squeezing ring passing through the pulling part is limited between the hook part and the threading ring, or the squeezing ring passing through the pulling part is spliced on the hook part;

and/or the outer diameter of the hook part along the extending direction of the hook part is smaller than the aperture of the limiting hole and larger than the aperture of the extrusion ring, so that the extrusion ring passing through the traction part is limited between the hook part and the threading ring;

and/or the outer wall of the threading ring is provided with a wire groove, and the traction part is positioned in the wire groove.

In the knotter of the application, the extrusion assembly is arranged in the mounting pipe and is close to the second end, and the push-pull assembly is arranged in the mounting pipe and extrudes or releases the extrusion assembly through the extrusion end, and the mounting pipe is extended out of the first end through the ball head end and is connected with the wrench in a universal way, so that the knotter is prevented from being damaged due to the fact that the wrench rotates relative to the handle and drives the push-pull assembly to extrude or release the extrusion assembly, even if the movement stroke of the push-pull assembly relative to the mounting pipe is long, the ball head end can adapt to the driving of the wrench and always keeps synchronous movement with the wrench along the axial direction of the mounting pipe, and therefore the part of the push-pull assembly extending out of the mounting pipe and being connected with the wrench is always kept in the axial direction of the mounting pipe, and further, the knotter is prevented from being damaged due to the fact that the push-pull assembly rotates and drives the push-pull assembly, in addition, the bending efficiency of the knotter can be shortened, and the required acting force can be further reduced, and the operating time of the operation can be shortened, and the operation can be further driven by the operation can be shortened.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of a knotter in accordance with one embodiment of the present disclosure.

Fig. 2 is an exploded view of a suture locking unit according to an embodiment of the present disclosure.

Fig. 3 is an exploded view of an operation unit according to an embodiment of the present disclosure.

FIG. 4 is a schematic cross-sectional view of a knotter in an embodiment of the present disclosure, showing the relative positions of the wrench and handle when the push-pull assembly is in the first position, and concealing a portion of the suture locking unit.

FIG. 5 is a schematic cross-sectional view of a knotter in an embodiment of the present disclosure, showing the relative positions of the wrench and handle when the push-pull assembly is in the second position, and concealing a portion of the suture locking unit.

FIG. 6 is a schematic cross-sectional view of a knotter in accordance with an embodiment of the present disclosure, showing the relative positions of the wrench and handle with the push-pull assembly in a third position, and hiding a portion of the suture locking unit.

Fig. 7 is a schematic structural diagram of a wrench according to an embodiment of the present disclosure.

FIG. 8-A is a schematic cross-sectional view of a suture locking unit in accordance with one embodiment of the present disclosure, showing the relative positions of the compression end and the first extrusion with the push-pull assembly in the first position;

FIG. 8-B is a schematic cross-sectional view of a suture locking unit showing the relative positions of the compression end and the first extrusion with the push-pull assembly in the second position in accordance with one embodiment of the present disclosure;

fig. 8-C is a schematic cross-sectional view of a suture locking unit in accordance with an embodiment of the present disclosure, showing the relative positions of the compression end and the first extrusion with the push-pull assembly in the third position.

FIG. 9-A is a schematic cross-sectional view of a suture locking unit showing the relative positions of the compression end and the first extrusion with the push-pull assembly in a first position, not shown, in accordance with one embodiment of the present disclosure;

FIG. 9-B is a schematic cross-sectional view of a suture locking unit showing the relative positions of the compression end and the first extrusion with the push-pull assembly in a first position, showing the compression ring in an initial state, in accordance with one embodiment of the present disclosure;

FIG. 9-C is a schematic cross-sectional view of a suture locking unit showing the relative positions of the compression end and the first extrusion with the push-pull assembly in the second position, showing the compression ring in the compressed state, with the suture not severed, in accordance with an embodiment of the present disclosure;

FIG. 9-D is a schematic cross-sectional view of a suture locking unit showing the relative positions of the compression end and the first extrusion with the push-pull assembly in a third position, showing the compression ring in a compressed state, with the suture severed, in accordance with an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of a push-pull member according to an embodiment of the present disclosure;

FIG. 11 is an overall schematic of a knotter system in accordance with an embodiment of the present disclosure;

FIG. 12-A is a schematic diagram illustrating an overall thread catcher according to an embodiment of the present disclosure;

FIG. 12-B is a schematic view of a thread catcher coupled to a compression ring according to one embodiment of the present disclosure;

FIG. 13-A is a schematic view of the cooperation of the thread hook, the compression ring, the suture and the suture locking unit with the thread loops hidden in accordance with one embodiment of the present disclosure;

Fig. 13-B is a schematic cross-sectional view of the cooperation of the thread catcher, the compression ring, the suture and the suture locking unit in accordance with one embodiment of the present disclosure.

Wherein the above figures include the following reference numerals:

The knotter 100, the handle 10, the limiting chamber 11, the sliding chamber 12, the connecting post 13, the mounting tube 20, the first tube 21, the first end 211, the second tube 22, the second end 221, the fitting portion 222, the connector 23, the threading hole 24, the threading chamber 25, the extrusion assembly 30, the first extrusion 31, the first extrusion portion 311, the first connecting arm 312, the first protrusion 313, the third extrusion portion 314, the second extrusion 32, the second extrusion portion 321, the extrusion chamber 33, the end cap 34, the limiting hole 341, the wrench 40, the connecting portion 41, the swinging groove 411, the limiting groove 412, the notch 413, the connecting hole 414, the rotating portion 42, the operating portion 43, the rotating shaft 44, the push-pull assembly 50, the ball head member 51, the ball head end 511, the connecting rod portion 512, the push-pull member 52, the extrusion end 521, the second protrusion 5211, the second connecting arm 5212, the connecting rod portion 522, the clip portion 523, the boss 41031, the first limiting surface 5232, the second limiting surface 5233, the avoiding groove 524, the limiting member 53, the fixing member 60, the rotating shaft 70, the rotating shaft 71, the rotating axis 71, the notch 413, the connecting portion 414, the connecting portion 92, the elastic wire loop 400, the hook system 400, the hook flange 410, the elastic hook member 400, the hook flange 410, the elastic hook flange 410, the hook flange 400, the elastic member 400, the hook flange 2, the elastic member 2, the hook frame member 400, the hook frame member, and the elastic member, and the hook member.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the authorization specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to FIGS. 1-4 and 11, in one aspect, the present application provides a knotter 100. The knotter 100 includes a suture 300 locking unit and an operating unit. The suture 300 locking unit includes a mounting tube 20, a squeeze assembly 30 and a push-pull assembly 50, and the operator unit includes a handle 10 and a wrench 40.

The mounting tube 20 has a first end 211 and a second end 221 opposite to each other, the first end 211 is fixedly connected with the handle 10, the second end 221 extends out of the handle 10, the squeezing assembly 30 is disposed in the mounting tube 20 and is close to the second end 221, the wrench 40 is rotatably connected to the handle 10, and the push-pull assembly 50 is disposed in the mounting tube 20 and extends out of the mounting tube 20 at the first end 211 to be connected with the wrench 40.

Further, referring to FIGS. 2-4, the push-pull assembly 50 has opposite squeeze and bulb ends 521 and 511. The ball end 511 extends out of the mounting tube 20 and is connected with the wrench 40 in a universal manner in the handle 10, the squeezing end 521 is located in the mounting tube 20 and is close to the second end 221, the wrench 40 rotates relative to the handle 10 under the action of external force, and drives the push-pull assembly 50to move along the axial direction of the mounting tube 20, so as to drive the squeezing assembly 30 to squeeze or release the squeezing ring 200.

By the universal connection between the push-pull assembly 50 and the wrench 40, the ball end 511 can adapt to the driving of the wrench 40 and always keep moving relative to the mounting tube 20 along the axial direction of the mounting tube 20 even if the movement stroke of the push-pull assembly 50 relative to the mounting tube 20 is long, so that the portion of the push-pull assembly 50 extending out of the mounting tube 20 and connected with the wrench 40 is always kept in the axial direction of the mounting tube 20, and is not bent relative to the mounting tube 20, thereby avoiding damage of the knotter 100 due to bending of the push-pull assembly 50, and prolonging the service life of the knotter 100.

Referring to fig. 3-4, an end of the mounting tube 20 extending into the handle 10 is in threaded connection with a fixing member 60, a limiting cavity 11 is further provided in the handle 10, and the fixing member 60 is disposed in the limiting cavity 11, so that the fixing member 60 is clamped in the limiting cavity 11 in a limiting manner, thereby realizing the fixed connection between the mounting tube 20 and the handle 10.

Further, referring to fig. 4-7, the wrench 40 includes a connecting portion 41, a rotating portion 42, and an operating portion 43. The rotating part 42 is rotatably connected to the handle 10 through a rotating shaft 44 and is located between the connecting part 41 and the operating part 43, the connecting part 41 is in universal connection with the ball head piece 51, the operating part 43 extends out of the handle 10 and drives the wrench 40 to rotate along the rotating part 42 under the action of external force, so that the connecting part 41 drives the push-pull assembly 50to move along the axial direction of the mounting tube 20.

The operating portion 43 may be engaged with the handle 10 for a medical staff to hold, and pull the operating portion 43 or release the operating portion 43 to rotate the wrench 40 relative to the handle 10.

Further, referring to fig. 3-6, the push-pull assembly 50 includes a ball member 51 and a push-pull member 52 that are coupled to each other in the axial direction of the mounting tube 20. The ball member 51 forms the ball end 511 and a link portion 512, and opposite ends of the link portion 512 are respectively connected between the ball end 511 and an end of the push-pull member 52 extending out of the mounting tube 20, so that the wrench 40 rotates and drives the push-pull member 52 and the ball member 51 to keep moving in the axial direction of the mounting tube 20.

Further, as shown in fig. 4-7, the connecting portion 41 is configured with a swing slot 411, a limit slot 412 and a notch 413. The notch 413 is respectively connected to the same side of the swing slot 411 and the limit slot 412, and is used for allowing the ball end 511 to enter the limit slot 412 and the link portion 512 to enter the swing slot 411, so as to facilitate the ball member 51 to be assembled on the connecting portion 41.

The swing slot 411 is communicated with the limit slot 412, the swing slot 411 is V-shaped towards a direction away from the limit slot 412, the ball end 511 is disposed in the limit slot 412, and the connecting rod portion 512 passes through the swing slot 411 and is connected with an end of the push-pull member 52 extending out of the mounting tube 20 along an axial direction of the mounting tube 20.

Further, the connection port between the swing slot 411 and the limit slot 412 may allow the connecting rod portion 512 to pass through, so that the connecting rod portion 512 is connected with the ball end 511 located in the limit slot 412, and at the same time, the connection port also limits the ball end 511 from entering the swing slot 411 from the limit slot 412, so that the push-pull assembly 50 can be in limited connection with the wrench 40 through the ball end 511 of the ball member 51, and when the wrench 40 rotates, the push-pull assembly 50 can be driven to move along the axial direction of the mounting tube 20 to squeeze the squeeze assembly 30 or remove the squeeze of the squeeze assembly 30.

Further, the distance between the communication ports in the direction perpendicular to the rotation direction of the handle 10 is smaller than the diameter of the ball end 511 and larger than the diameter of the link portion 512, so that the ball end 511 is movably limited in the limiting groove 412 and the link portion 512 is movably limited in the swing groove 411.

By arranging the V-shaped swing slot 411 and the limit slot 412, the ball head member 51 is pushed or pulled by the wrench 40 to drive the push-pull member 52 to move relative to the mounting tube 20, and the ball head member 51 and the push-pull member 52 always keep moving in the axial direction of the mounting tube 20, so that the problem that the push-pull assembly 50 stretches out of the mounting tube 20 and one end, which is close to the wrench 40, is axially deflected relative to the mounting tube 20 under the driving of the wrench 40, and the push-pull assembly 50 is limited by mutual extrusion between the position stretching out of the mounting tube 20 and the inner wall of the mounting tube 20, so that the movement of the push-pull assembly 50 relative to the mounting tube 20 is not smooth enough, the resistance for driving the push-pull assembly 50 is increased, and the problem that the mounting tube 20 and the push-pull assembly 50 generate irreversible deformation and the precision of the knotter 100 is affected is solved.

Further, referring to fig. 3-6, the handle 10 is configured with a slide cavity 12, the slide cavity 12 being located in a direction of movement of the push-pull assembly 50 away from the compression assembly 30 and between the first end 211 and the wrench 40.

The push-pull assembly 50 further comprises a limiting member 53, wherein the limiting member 53 is connected between the ball head member 51 and one end of the push-pull member 52 extending out of the mounting tube 20 and is slidably limited in the sliding cavity 12 along the axial direction of the mounting tube 20, so that the push-pull member 52 is connected with the ball head member 51, and the limiting member 53 slides in the sliding cavity 12 along the axial direction of the mounting tube 20, so that the push-pull assembly 50 stably maintains the axial movement along the mounting tube 20 and does not rotate relative to the central axis of the mounting tube 20, and the push-pull assembly 50 can stably and accurately squeeze or release the squeezing assembly 30.

Further, the limiting member 53, the push-pull member 52 and the ball member 51 are detachably connected, so as to facilitate assembling the ball member 51 with the handle 10. Or the limiting piece 53, the push-pull piece 52 and the ball head piece 51 are integrally formed, so that the structural strength among the limiting piece 53, the push-pull piece 52 and the ball head piece 51 is improved, and the assembly steps are simplified. Or the limiting piece 53 and the push-pull piece 52 are integrally formed, and the limiting piece 53 and/or the push-pull piece 52 and the ball head piece 51 are detachably connected, so that the structural strength between the limiting piece 53 and the push-pull piece 52 is improved, and the ball head piece 51 and the handle 10 are assembled and the assembly steps are simplified. Or the limiting piece 53 and the ball head piece 51 are integrally formed, and the limiting piece 53 and/or the ball head piece 51 are detachably connected with the push-pull piece 52, so that the assembly steps are simplified.

Further, referring to FIGS. 3-6, the knotter 100 includes a first resilient element 91. The first elastic member 91 is disposed in the handle 10 and connected between the wrench 40 and the handle 10, and is used for driving the handle 10 to rotate so as to drive the push-pull assembly 50 to remove the extrusion of the extrusion assembly 30.

In the embodiment of the present application, the first elastic member 91 is driven by pulling force to rotate the handle 10 to drive the push-pull assembly 50to remove the extrusion of the extrusion assembly 30, and the first elastic member 91 is stretched in the elastic deformation range during the process that the wrench 40 rotates relative to the handle 10 to drive the push-pull assembly 50to extrude the extrusion assembly 30.

Further, the first elastic member 91 may be an elastic member that is elastically stretched and can be restored after a tension force is applied to the tension spring, the elastic string, the elastic band, or the like.

Further, as shown in fig. 4-7, the wrench 40 further has a connection hole 414 on the connection portion 41, the handle 10 has a connection post 13, the elastic member is connected between the connection hole 414 and the connection post 13, and during the process of rotating the wrench 40 and driving the push-pull assembly 50 to move relative to the mounting tube 20, the first elastic member 91 is stretched within the elastic deformation range, and under the condition that the external force applied to the wrench 40 is removed, the first elastic member 91 drives the wrench 40 to rotate reversely to enable the push-pull assembly 50 to remove the extrusion force applied to the extrusion assembly 30.

In the embodiment of the present application, the first elastic member 91 may also be driven by pressure to rotate the handle 10 to drive the push-pull assembly 50 to remove the extrusion of the extrusion assembly 30, and in the process that the wrench 40 rotates relative to the handle 10 to drive the push-pull assembly 50 to extrude the extrusion assembly 30, the first elastic member 91 is extruded in an elastic deformation range.

Further, the first elastic member 91 may be an elastic member that is elastically pressed and can be restored after receiving the pressing force by a metal spring, a silicone spring, a compression spring, etc.

Further, the first elastic member 91 may be abutted between the connecting portion 41 and an end of the handle 10 near the limiting member 53, or abutted between the holding portion and an end of the handle 10 far from the limiting member 53, or sleeved on the connecting portion 512 and abutted between the limiting member 53 and the connecting portion 41, or sleeved on the push-pull member 52 and abutted between the first end 211 and the limiting member 53, and during the process of rotating the wrench 40 and driving the push-pull assembly 50 to move relative to the mounting tube 20, the first elastic member 91 is compressed in an elastic deformation range thereof, and in the case of removing an external force applied to the wrench 40, the first elastic member 91 drives the wrench 40 to rotate reversely to enable the push-pull assembly 50 to remove the extrusion force on the extrusion assembly 30.

In the case where the first elastic member 91 is sleeved on the connecting rod portion 512 and abuts against between the limiting member 53 and the connecting portion 41, or sleeved on the push-pull member 52 and abuts against between the first end 211 and the limiting member 53, the direction of elastic deformation of the first elastic member 91 may be in the same direction as the axial direction of the mounting tube 20, so as to reduce the force required for extruding the first elastic member 91, and fully utilize the deformation force released by resetting the extruded first elastic member 91.

Further, referring to fig. 1, in the embodiment of the application, the mounting tube 20 is of a unitary structure, and the outer diameters of the mounting tube 20 along the direction from the first end 211 to the second end 221 are the same, so that the structure of the mounting tube 20 is simpler and has better structural strength.

Referring to fig. 2 and 8, in the embodiment of the present application, the installation tube 20 may be a split structure and include a first tube 21 and a second tube 22 which are connected to each other. The first tube 21 is connected between the second tube 22 and the handle 10, the outer diameter of the first tube 21 is smaller than that of the second tube 22, the extrusion assembly 30 is arranged in the second tube 22, the push-pull assembly 50 is arranged in the first tube 21 in a penetrating manner, the extrusion end 521 extends out of the first tube 21 and is positioned in the second tube 22, and the ball end 511 extends out of the first tube 21 and is positioned in the handle 10.

By setting the outer diameter of the first tube 21 smaller than the outer diameter of the second tube 22, the first tube 21 passing through the body surface of the patient can avoid squeezing the wound on the body surface of the patient, and is convenient for the medical staff to operate.

Further, the connection portion between the first tube 21 and the second tube 22 is connected by a connector 23, wherein the second tube 22 is nested at the outer side of the connector 23 and is smoothly connected with the outer side wall of the connector 23, so that the second tube 22 can smoothly enter and exit the patient, the connection portion between the second tube 22 and the connector 23 is prevented from scratching the tissue of the patient, the first tube 21 is inserted into the connector 23, and the outer wall between the first tube 21 and the second tube 22 of the connector 23 is gradually transited in a ring slope so that the knotter 100 is prevented from scratching the tissue of the patient by the connector 23 in the process of exiting the patient.

Further, referring to fig. 2 and 8-9, the extrusion assembly 30 includes a first extrusion 31 and a second extrusion 32. The first pressing member 31 is rotatably coupled to the inside of the mounting tube 20 and is configured to form a first pressing portion 311, the second pressing member 32 is coupled to the mounting tube 20 and is configured to form a second pressing portion 321, the second pressing portion 321 and the first pressing portion 311 are configured to form a pressing chamber 33, and the pressing chamber 33 is configured to receive the pressing ring 200. The first extrusion member 31 rotates to drive the first extrusion portion 311 to approach the second extrusion portion 321, so as to extrude the extrusion ring 200 located in the extrusion cavity 33, or the first extrusion member 31 rotates to drive the first extrusion portion 311 to depart from the second extrusion portion 321, so as to release the extrusion ring 200 located in the extrusion cavity 33.

Further, referring to FIGS. 9-B and 9-C, the squeeze ring 200 has an initial state and a squeeze state. With the extrusion ring 200 in the initial state, the suture 300 may be moved in and out of the extrusion ring 200 and moved relative to the extrusion ring 200, and with the extrusion ring 200 in the extruded state, the suture 300 passing through the extrusion ring 200 is clamped by the extrusion ring 200 and is not movable relative to the extrusion ring 200.

The first presser 31 has an initial position and a pressing position driven by the push-pull assembly 50. The first extrusion part 311 is far away from the second extrusion part 321 when the first extrusion part 31 is at the initial position, the volume of the extrusion cavity 33 is maximum, the extrusion ring 200 in the initial state or the extrusion state can freely enter and exit the extrusion cavity 33, and when the first extrusion part 31 is at the extrusion position, the first extrusion part 311 is close to the second extrusion part 321, the volume of the extrusion cavity 33 is reduced, and at the moment, the extrusion ring 200 is extruded and locks the penetrated suture 300.

By providing only the first pressing member 31 to rotate and to move closer to or farther away from the second pressing member 32, the pressing assembly 30 is made to have higher accuracy and more convenient to control the pressing assembly 30 to perform pressing and releasing of the pressing ring 200.

Further, the first extrusion member 31 is made of a rigid structural member, so that the first extrusion member 31 is made of a rigid structural member, and thus the first extrusion member 31 can always maintain its original external form under the driving of the push-pull assembly 50, and is matched with the second extrusion member 32 to effectively and accurately extrude the extrusion ring 200.

Further, the first pressing portion 311 protrudes toward the second pressing portion 321 in a tooth shape, and the second pressing portion 321 corresponds to the first pressing portion 311 in a groove shape. With the first pressing member 31 in the pressing position, the pressing ring 200 is in the pressed state and pressed to have a V-shape. Thereby shortening the whole length of the extrusion ring 200, further being beneficial to controlling the quantity and the volume of the implants such as the extrusion ring 200, the suture 300 and the like, increasing the wound healing efficiency of the patient and shortening the recovery time of the patient after the operation.

Further, referring to fig. 8-9, the second extrusion 32 is fixedly attached to the mounting tube 20. The second pressing portion 321 is formed in a groove shape, and the extending direction of the second pressing portion 321 is parallel to the rotation axis 71 of the first pressing member 31, and the fitting portion 222 is formed corresponding to the second pressing portion 321 of the mounting tube 20, and the fitting portion 222 is fitted and connected to the second pressing portion 321. Therefore, the second extrusion portion 321 and the mounting tube 20 are limited along the axial direction of the mounting tube 20 and are fixedly connected by welding or bonding, so that the outside of the second extrusion portion 321 can fill the gap of the embedded portion 222, and the length of the mounting tube 20 can be effectively controlled.

Or the second extrusion member 32 and the mounting tube 20 are integrally formed, so that the structural strength between the second extrusion member 32 and the mounting tube 20 is greater, the extrusion ring 200 is effectively and accurately extruded by being matched with the first extrusion member 31, the assembly steps are simplified, and the assembly efficiency is improved.

Further, referring to FIGS. 2 and 8-9, the knotter 100 further comprises an end cap 34. The end cap 34 is covered on the second end 221, and is configured with a limiting hole 341 communicating with the extrusion chamber 33.

The squeeze ring 200 includes a body portion 210 and a flange portion 220, the flange portion 220 being located at one end of the body portion 210 and protruding outward in a radial direction of the body portion 210.

The limiting hole 341 is used for allowing the main body 210 of the extrusion ring 200 to pass through and limiting the flange 220 of the extrusion ring 200, so that the extrusion ring 200 can be inserted into a designated position in the extrusion cavity 33, and the extrusion ring 200 can be accurately extruded, so that the extrusion ring 200 extruded to the extrusion state can effectively lock the passed suture 300.

Further, the end cap 34 is integrally formed with the second extrusion member 32, so that the end cap 34 and the second extrusion member 32 have better structural strength, the assembly step is simplified to improve the assembly efficiency, and the precision of the fit between the limiting hole 341 and the extrusion cavity 33 is ensured, or the end cap 34 and the mounting tube 20 are integrally formed, so that the end cap 34 and the mounting tube 20 are smoothly connected, the situation that the mounting tube 20 scratches the tissues of a patient when the patient enters or exits the body is avoided, the end cap 34 and the mounting tube 20 have better structural strength, the assembly step is simplified to improve the assembly efficiency, or the end cap 34 is fixedly connected to the mounting tube 20, and is fixedly connected with the end cap 34 by means of bonding or welding, etc., so that the extrusion assembly 30 and the push-pull assembly 50 are firstly mounted in the mounting tube 20 from the second end 221, and then the end cap 34 is mounted on the mounting tube 20.

Further, referring to fig. 2 and 10, the push-pull member 52 includes a connecting rod portion 522. The connecting rod 522 is connected between the ball end 511 and the pressing end 521, wherein the connecting rod 522 is inserted into the first pipe 21 at least in correspondence with the inner wall of the first pipe 21, so that the push-pull assembly 50 can maintain the axial movement along the mounting pipe 20.

The connecting rod portion 522 is configured with a clamping portion 523, and the clamping portion 523 is close to the pressing end 521. The knotter 100 further includes a cutter 80, where the cutter 80 and the clamping portion 523 are clamped to each other and are located between the connecting rod portion 522 and the corresponding inner wall of the mounting tube 20, so as to move synchronously with the push-pull member 52, and cut off the excessive suture 300 extending out of the extrusion ring 200 when the extrusion ring 200 is in the extrusion state.

One of the cutter 80 and the clamping portion 523 has a boss 5231, the other of the cutter 80 and the clamping portion 523 has a clamping groove 81, and the boss 5231 is clamped with the clamping groove 81 in an adaptive manner.

Further, the clamping portion 523 includes a first limiting surface 5232 and a second limiting surface 5233 adjacent to each other, the first limiting surface 5232 faces away from the extrusion end 521, the second limiting surface 5233 faces toward the extrusion end 521, the boss 5231 is disposed on the first limiting surface 5232, the cutter 80 has the clamping groove 81, the clamping groove 81 is in spacing clamping connection with the boss 5231, and one end of the cutter 80 away from the cutting edge abuts against the second limiting surface 5233, and one side of the cutter 80 close to the boss 5231 abuts against the first limiting surface 5232, and one side of the cutter 80 away from the first limiting surface 5232 abuts against the inner wall of the mounting tube 20, so that the cutter 80 is in spacing clamping connection between the clamping portion 523 and the corresponding inner wall of the mounting tube 20, and the spacing clamping connection of the cutter 80 can be realized without setting a fixing structure, thereby facilitating assembly of the cutter 80 or replacement of the cutter 80.

Further, referring to fig. 8-9, the mounting tube 20 is configured with a wire passage hole 24 and a wire passage cavity 25. The thread passing cavity 25 is communicated between the extrusion cavity 33 and the thread passing hole 24, and the suture 300 passing through the extrusion ring 200 sequentially passes through the thread passing cavity 25 and the thread passing hole 24 to extend out of the mounting tube 20.

The push-pull assembly 50 is sequentially movable in a first position, a second position, and a third position along the direction in which the first end 211 is directed toward the second end 221.

Referring to fig. 4 and 8-a, when the push-pull assembly 50 is in the first position, the first pressing member 31 is in the initial position, the cutter 80 is away from the threading space, and the pressing ring 200 in the initial state can freely enter and exit the pressing cavity 33 from the limiting hole 341.

Referring to fig. 5 and 8-B, when the push-pull assembly 50 is in the second position, the first pressing member 31 is located at the pressing position, the first pressing portion 311 is adjacent to the second pressing portion 321, and presses the pressing ring 200 located in the pressing cavity 33 to the pressed state, and the pressing ring 200 in the pressed state clamps the penetrated suture 300, at this time, the cutter 80 is adjacent to the thread passing space.

Referring to fig. 6 and 8-C, when the push-pull assembly 50 is in the third position, the first pressing member 31 is located in the pressing position, the first pressing portion 311 is adjacent to the second pressing portion 321, and the pressing ring 200 in the pressed state is clamped in the pressing cavity 33, and at this time, the cutter 80 is located in the thread passing space, and cuts the thread 300 passing through the thread passing space, so that the excessive thread 300 is cut off.

Further, the push-pull assembly 50 is driven by the first elastic member 91 to return from the third position to the first position, and the first pressing member 31 is away from the second pressing member 32, so that the pressing assembly 30 no longer clamps the pressing ring 200 in the pressed state, and the pressing ring 200 in the pressed state can smoothly exit the pressing cavity 33 from the limiting hole 341 and be implanted into the patient.

Further, referring to fig. 9, in the embodiment of the present application, the first pressing member 31 further includes a first connecting arm 312 and a first protrusion 313, and the first pressing portion 311 and the first protrusion 313 are connected to opposite ends of the first connecting arm 312, respectively. The first pressing portion 311 is close to the second end 221 and faces the second pressing portion 321, and the first protruding portion 313 is away from the second end 221 and away from the first pressing portion 311, so that the first pressing portion 311 and the first protruding portion 313 are respectively located on two opposite sides of the first connecting arm 312 and are away from each other, and protruding directions are opposite. The first connecting arm 312 is rotatably connected in the mounting tube 20 through the rotating shaft 70, and the rotating shaft 70 is close to the first protruding portion 313, so that the first connecting arm 312 has a longer moment arm between the first pressing portion 311 and the rotating shaft 70, so that the pushing and pulling assembly 50 needs to apply smaller force to the first connecting arm 312 in the process of driving the first pressing member 31 from the first position to the second position and the third position, and the medical staff can operate more smoothly and conveniently.

The rotating shaft 70 may be fixedly connected to the first pressing member 31 and rotatable with respect to the mounting tube 20, or the rotating shaft 70 may be integrally formed with the first pressing member 31 and rotatable with respect to the mounting tube 20, or the rotating shaft 70 may be fixedly connected to the mounting tube 20 and rotatable with respect to the rotating shaft 70 by the first pressing member 31. And are not limited herein.

Further, the pressing end 521 includes a second protrusion 5211 and a second connecting arm 5212, and the second connecting arm 5212 is connected between the second protrusion 5211 and the connecting rod portion 522 and parallel to the cutter 80 in the axial direction of the mounting tube 20.

Wherein the second protrusion 5211 faces the first protrusion 313 such that the second protrusion 5211 faces the first protrusion 313, and a relief groove 524 facing the first protrusion 313 is formed between the second protrusion 5211 and the second connecting arm 5212 and the connecting rod 522.

With the first presser 31 in the initial position, the second protrusion 5211 presses the first protrusion 313 to rotate the first presser 31 with respect to the rotation shaft 70, thereby moving the first presser 311 away from the second presser 321, and thereby effecting a return of the first presser 31 from the pressed position to the initial position, or the first presser 31 being held in the initial position.

Under the condition that the first extrusion member 31 is at the extrusion position, the second protrusion 5211 extrudes the first connecting arm 312 to rotate along the rotating shaft 70, so that the first extrusion portion 311 is close to the second extrusion portion 321, and the first protrusion 313 is located in the avoidance groove 524, so that the push-pull assembly 50 extrudes, through the first protrusion 313, a side of the first connecting arm 312 away from the first extrusion portion 311, so that the first extrusion portion 311 cooperates with the second extrusion portion 321 to clamp the extrusion ring 200 located in the extrusion cavity 33.

Compared with the arrangement of the elastic structural member to drive the first pressing member 31 to return from the pressing position to the initial position, the present embodiment can eliminate the elastic structural member, so that the structure of the knotter 100 is simpler, the assembling steps are reduced, and the assembling efficiency is improved.

Further, a side of the first connecting arm 312 facing away from the first pressing portion 311 is gradually inclined upwards along a direction in which the first end 211 points to the second end 221, so that a side of the first connecting arm 312 facing away from the first pressing portion 311 is an inclined surface, and the pressing end 521 moves from the first end 211 to the second end 221 and abuts against the inclined surface so that the first pressing portion 311 is driven to approach the second pressing portion 321 by the rotation of the first pressing portion 31, thereby effectively prolonging a stroke in which the first pressing portion 31 contacts and is pressed by the push-pull assembly 50, and ensuring that a force applied to the push-pull assembly 50 acts on the first pressing portion 31 smoothly.

Further, in the embodiment of the present application, referring to fig. 2 and 8, the first pressing member 31 further includes a first connecting arm 312 and a third pressing member 314, the first pressing member 311 and the third pressing member 314 are respectively connected to opposite ends of the first connecting arm 312, the first pressing member 311 is close to the second end 221 and faces the second pressing member 321, the third pressing member 314 is far from the second end 221, the first connecting arm 312 is rotatably connected in the mounting tube 20 through the rotation shaft 70, and the rotation shaft 70 is close to the third pressing member 314, so that the first connecting arm 312 has a long moment arm between the first pressing member 311 and the rotation shaft 70, so that the pushing and pulling assembly 50 needs to apply a small force to the first connecting arm 312 during the process of driving the first pressing member 31 from the first position to the second position and the third position, and thus the medical staff can operate smoothly and easily.

Further, the knotter 100 further includes a second elastic member 92, where the second elastic member 92 is connected between the third pressing part 314 and the inner wall of the mounting tube 20, for driving the first pressing part 31 to return from the pressing position to the initial position.

Wherein the second elastic member 92 is abutted between the third pressing portion 314 and the inner wall of the mounting tube 20 remote from the second pressing member 32, and is pressed and deformed in an elastic range during the movement of the first pressing member 31 from the initial position to the pressing position.

Further, the second elastic member 92 is held between the third pressing portion 314 and the inner wall of the mounting tube 20 in a direction perpendicular to both the axial direction of the mounting tube 20 and the rotation axis 71 of the rotating shaft 70, and the third pressing portion 314 presses the second elastic member 92 in the opposite direction during the process of the first pressing portion 311 approaching the second pressing portion 321, so that the second elastic member 92 is elastically deformed in an elastic range.

Further, the second elastic member 92 may be a metal elastic sheet, which is a hollow ring structure, such as an ellipse, a ring, etc., and is not limited herein. The second connecting arm 5212 is disposed in the middle of the metal spring in the annular structure, and the metal spring abuts against the inner wall of the mounting tube 20 and the third pressing portion 314.

The metal elastic sheet comprises a first metal sheet 921 and a second metal sheet 922, the first metal sheet 921 is an arc-shaped structure with an opening facing the second connecting arm 5212, the second metal sheet 922 is fixedly connected to the inner wall of the mounting tube 20, the second metal sheet 922 is an arc-shaped structure with an opening facing the first metal sheet 921, and the first metal sheet 921 and the second metal sheet 922 are mutually connected to form a hollow annular structure.

Wherein the first metal sheet 921 is an elastic structure, or the second metal sheet 922 is an elastic structure, or both the first metal sheet 921 and the second metal sheet 922 are elastic structures.

Or the second elastic member 92 is connected between the third pressing portion 314 and the inner wall of the mounting tube 20 adjacent to the second pressing portion 32 and is deformed in tension in an elastic range during the movement of the first pressing portion 31 from the initial position to the pressing position.

Further, the second elastic member 92 is held between the third pressing portion 314 and the inner wall of the mounting tube 20 in a direction perpendicular to both the axial direction of the mounting tube 20 and the rotation axis 71 of the rotating shaft 70, and the third pressing portion 314 stretches the second elastic member 92 in the opposite direction during the process of the first pressing portion 311 approaching the second pressing portion 321, so that the second elastic member 92 elastically deforms in the elastic range.

Further, the second elastic member 92 may be an elastic structure that is elastically stretched and can be restored after the tension spring, the elastic string, the elastic band, etc. are subjected to the tension force. And are not limited herein.

Referring now to FIGS. 11-13, in another aspect, the present application also provides a knotter system 1000, where the knotter system 1000 includes a knotter 100 as described in any of the above. Therefore, the knotter system 1000 has all the advantages described above and will not be described in detail herein.

Further, the knotter system 1000 also includes a knotter 400. The thread hooking device 400 is used to place the extrusion ring 200 in the extrusion chamber 33 in cooperation with the knotter 100, and to pass the suture 300 protruding from the suture tissue through the extrusion ring 200 and out of the knotter 100 from the wire hole 24.

Further, the thread catcher 400 includes a hooking member 410 and a thread loop 420. The hooking member 410 includes a hook portion 4101 and a pulling portion 4102, the pulling portion 4102 is connected to one end of the hook portion 4101, the pulling portion 4102 passes through the extrusion ring 200 and is sleeved on the thread loop 420, the thread loop 420 is used for passing the suture 300, and after the thread loop 420 is removed, the portion of the suture 300 passes through the pulling portion 4102.

The outer diameter of the hook 4101 in the extending direction of the hook 4101 is smaller than the aperture of the limiting hole 341 and larger than the aperture of the pressing ring 200, so that the pressing ring 200 passing through the pulling part 4102 is limited between the hook 4101 and the wire threading ring 420; or the extrusion ring 200 passing through the pulling part 4102 is inserted into the hook part 4101, so that the extrusion ring 200 can be pre-limited and connected to one end of the hook part 4101, which is close to the pulling part 4102, so as to pre-assemble the extrusion ring 200 onto the knot tying device 400, and one end of the hook part 4101, which is far away from the pulling part 4102, sequentially passes through the limiting hole 341, the extrusion cavity 33, the threading cavity 25 and the threading hole 24, so that the main body part 210 of the extrusion ring 200 is assembled to the extrusion cavity 33, and the flange part 220 is limited to one side of the limiting hole 341, which is far away from the extrusion cavity 33, so that the extrusion ring 200 can be rapidly and efficiently assembled onto the knot tying device 100 accurately, and simultaneously, the extrusion ring 200 can be prevented from falling off through the 410420, and the thread loop 420 can be supported by the pulling ring 4102, so that the thread loop 300 can be pulled out of the pulling ring 2 through the pulling part 300 and the thread tying device 300, and the thread loop 2 can be pulled out of the thread tying device 100, and the thread loop 2 can be pulled through the threading ring 2, and the thread loop 2 can be pulled through the threading part 300 and the thread tying device 2, and the thread loop 2 can be pulled through the thread 2 can be pulled through the threading part 300 and the thread 2.

The pulling portion 4102 is a rope-like structure that is easy to bend and has sufficient strength, such as cotton rope, steel wire rope, etc., so as to be convenient for passing through the extrusion ring 200 and sleeving on the wire ring 420, and for removing the wire ring 420 and passing through the extrusion ring 200, the wire passing cavity 25, and the wire passing hole 24 in sequence.

Further, referring to fig. 12-13, the outer wall of the wire loop 420 has a slot 4201, and the pulling portion 4102 is located in the slot 4201, so that the pulling portion 4102 can be stably sleeved on the wire loop 420.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations 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 "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

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

Claims

1. A knotter which is used for a knotter, characterized by comprising the following steps:

A handle;

The wrench is rotatably connected to the handle, the push-pull assembly is provided with an opposite extrusion end and a ball end, the ball end extends out of the mounting tube and is in universal connection with the wrench in the handle, the extrusion end is positioned in the mounting tube and is close to the second end, the wrench rotates relative to the handle under the action of external force and drives the push-pull assembly to axially move along the mounting tube so as to drive the extrusion assembly to extrude or release the extrusion ring;

The push-pull assembly comprises a ball head piece, the ball head piece comprises a connecting rod part and a ball head end, a swinging groove, a limiting groove and a notch are formed in the wrench structure, the notch is respectively communicated with the swinging groove and the same side of the limiting groove and used for enabling the ball head end to enter the limiting groove and the connecting rod part to enter the swinging groove, and the swinging groove is communicated with the limiting groove.

2. The knotter of claim 1, wherein the wrench comprises a rotating part, a connecting part and an operating part, the rotating part is rotatably connected to a handle and is positioned between the connecting part and the operating part, the connecting part is rotatably connected with the ball end, the operating part extends out of the handle and drives the wrench to rotate along the rotating part under the action of external force, so that the connecting part drives the push-pull assembly to axially move along the mounting tube;

the push-pull assembly further comprises a push-pull piece, the push-pull piece comprises the extrusion end, and one end of the push-pull piece, which is far away from the extrusion end, is connected with one end of the connecting rod part, which is far away from the ball head end;

the connecting part is structured to form the swinging groove, the limiting groove and the notch, and the swinging groove is V-shaped towards the direction far away from the limiting groove.

3. The knotter of claim 2, wherein a communication port between the swinging groove and the limiting groove is configured to allow the connecting rod portion to pass through and limit the ball end from the limiting groove to the swinging groove;

4. The knotter of claim 1, wherein the handle is configured with a sliding cavity located in a direction of movement of the push-pull assembly away from the compression assembly;

The push-pull assembly comprises a push-pull piece and a limiting piece, the limiting piece is connected between the ball head piece and one end of the push-pull piece extending out of the mounting pipe and is slidably limited in the sliding cavity along the movement direction of the push-pull piece, the push-pull piece is structured to form the extrusion end, and the ball head piece is structured to form the ball head end;

Or the limiting piece, the push-pull piece and the ball head piece are integrally formed;

5. The knotter of any one of claims 1-4, wherein the compression assembly comprises a first compression member rotatably coupled within the mounting tube and configured to form a first compression section, and a second compression member coupled to the mounting tube and configured to form a second compression section configured with the first compression section to form a compression chamber for receiving a compression ring;

And/or the first extrusion is made of a rigid structural member;

6. The knotter of claim 5, wherein the push-pull assembly comprises a connecting rod portion connected between the ball end and the compression end, the connecting rod portion configured with a clip portion that is proximate the compression end;

7. The knotter of claim 5, wherein the first extrusion further comprises a first connection arm and a first protrusion, the first extrusion and the first protrusion being connected at opposite ends of the first connection arm, respectively, the first extrusion being proximate to the second end and facing toward the second extrusion, the first protrusion being distal from the second end and facing away from the first extrusion, the first connection arm being rotatably connected within the mounting tube by a rotational shaft, and the rotational shaft being proximate to the first protrusion;

8. The knotter of claim 7, wherein the first extrusion further comprises a first connecting arm and a third extrusion, the first extrusion and the third extrusion being coupled to opposite ends of the first connecting arm, respectively, the first extrusion being proximate to the second end and facing the second extrusion, the third extrusion being distal from the second end, the first connecting arm being rotatably coupled within the mounting tube by a shaft, and the shaft being proximate to the third extrusion;

9. The knotter of claim 8, wherein the second elastic member is a metal elastic sheet, and the metal elastic sheet is a hollow annular structure, the second connecting arm is arranged in the middle of the metal elastic sheet of the annular structure in a penetrating way, and the metal elastic sheet is propped against between the inner wall of the mounting tube and the third extrusion part;

the first metal sheet is of an elastic structure;

or the second metal sheet is of an elastic structure;

10. A knotter system comprising the knotter of any one of claims 1-9, and

The thread hooking device comprises a hooking piece and a thread through ring, the hooking piece comprises a hook part and a pulling part, the pulling part is connected to one end of the hook part, the pulling part passes through the extrusion ring and is sleeved on the thread through ring, and the thread through ring is used for allowing a suture to pass through and allowing the suture to pass through the pulling part after the thread through ring is removed;