Knotter and system

Abstract

The invention discloses a knotter and a system. According to 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 end is universally connected with the wrench; therefore, in the process that the wrench drives the push-and-pull assembly to extrude or release the extrusion assembly, even if the movement stroke of the push-and-pull assembly relative to the installation pipe is long, the ball head end can also adapt to driving of the wrench and keep moving in the axial direction of the installation pipe. Therefore, the part, extending out of the mounting pipe, of the push-and-pull assembly is always kept in the axial direction of the mounting pipe and cannot be bent relative to the mounting pipe, the push-and-pull assembly can smoothly move in the mounting pipe in the axial direction of the mounting pipe, meanwhile, the acting force needed for driving the push-and-pull assembly to move can be reduced, the operation time is shortened, and the working efficiency is improved. The operation efficiency is improved, and the service life of the knotter is prolonged.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a knotter and system. Background Art

[0002] For surgeries involving suturing, after completing the suturing of the tissue, it is necessary to squeeze the locking ring that is placed on the surgical suture through a knotter so that at least part of the inner wall of the locking ring fits and clamps the suture, and then cut off the excess suture on the proximal side of the locking ring to complete the operation.

[0003] The knotter generally includes a suture locking unit and an operating unit connected to each other. The operating unit includes a handle and a wrench for the medical staff to hold. The operating unit is used to control the push-pull component of the suture locking unit to drive the extrusion component in the installation tube to execute the extrusion of the locking ring to clamp the suture. The existing operating unit and the end of the push-pull component extending out of the installation tube are usually connected by a rotating shaft. In the process of the operating unit driving the push-pull component to move relative to the installation tube, since the wrench of the operating unit rotates along the rotation axis, the movement trajectory of the rotating shaft is an arc shape, rather than a straight line that coincides with the axial direction of the installation tube. Therefore, when the movement path of the rotating shaft is long, the part of the end of the push-pull component extending out of the installation tube connected to the wrench of the operating unit will be bent, resulting in the operating unit being unable to drive the push-pull member to move relative to the installation tube, causing the push-pull member to be unable to drive the extrusion component to extrude the locking ring, thereby causing the locking ring to be unable to lock the suture, and further resulting in the consequence of failure of the operation. Summary of the invention

[0004] The main purpose of the present application is to provide a knotter and a system to solve the problem in the prior art that the push-pull assembly cannot move along the axial direction of the mounting tube, causing the knotter to be damaged and unusable.

[0005] In one aspect, the present application provides a knotter, the knotter comprising a handle;

[0006] a mounting tube having a first end and a second end opposite to each other, the first end being connected to the handle and the second end extending out of the handle;

[0007] an extrusion assembly disposed within the mounting tube and proximate the second end; and

[0008] A wrench and a push-pull assembly, wherein the wrench is rotatably connected to the handle, the push-pull assembly has an extrusion end and a ball end relative to each other, the ball end extends out of the mounting tube and is universally connected to the wrench in the handle, the extrusion end is located in the mounting tube and close to the second end, the wrench rotates relative to the handle under the action of an external force, and drives the push-pull assembly to move axially along the mounting tube, so as to drive the extrusion assembly to extrude or release the extrusion ring.

[0009] Further, the wrench includes a rotating part, a connecting part and an operating part, the rotating part is rotatably connected to the handle and is located between the connecting part and the operating part, the connecting part is rotatably connected to the ball head end, the operating part extends out of the handle and drives the wrench to rotate along the rotating part under the action of an external force, so that the connecting part drives the push-pull assembly to move axially along the mounting tube;

[0010] Wherein, the push-pull assembly comprises a ball head member and a push-pull member, the ball head member comprises a connecting rod portion and the ball head end, the push-pull member comprises the extrusion end, and an end of the push-pull member away from the extrusion end is connected to an end of the connecting rod portion away from the ball head end;

[0011] The connecting portion is structured to form a swing groove, a limit groove and a notch, wherein the notch is respectively connected to the same side of the swing groove and the limit groove, and is used for the ball head end to enter the limit groove, and for the connecting rod to enter the swing groove, the swing groove is connected to the limit groove, and the swing groove is V-shaped in the direction away from the limit groove.

[0012] Furthermore, the connecting opening between the swing groove and the limiting groove allows the connecting rod to pass through, and restricts the ball head end from entering the swing groove from the limiting groove;

[0013] Wherein, the spacing of the communication openings along a 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.

[0014] Further, the handle structure is formed with a sliding cavity, and the sliding cavity is located in the movement direction of the push-pull component away from the extrusion component;

[0015] The push-pull assembly includes a push-pull member, a stopper and a ball head member, wherein the stopper is connected between the ball head member and one end of the push-pull member extending out of the mounting tube and is slidably limited in the sliding cavity along the movement direction of the push-pull member, the push-pull member is structured to form the extrusion end, and the ball head member is structured to form the ball head end;

[0016] Wherein, the position-limiting member, the push-pull member and the ball head member are detachably connected;

[0017] Alternatively, the position-limiting member, the push-pull assembly and the ball head member are integrally formed;

[0018] Alternatively, the limiting member and the push-pull member are integrally formed, and the ball head member is detachably connected to the push-pull member and / or the limiting member;

[0019] Alternatively, the limiting member and the ball head member are integrally formed, and the push-pull member is detachably connected to the ball head member and / or the limiting member;

[0020] And / or, the knotter further comprises a first elastic member, which is disposed in the handle and connected between the wrench and the handle, and is used to drive the handle to rotate so as to drive the push-pull assembly to remove the extrusion of the extrusion assembly;

[0021] Wherein, the first elastic member drives the handle to rotate through a pulling force to drive the push-pull assembly to remove the extrusion of the extrusion assembly, and in the process in which the wrench rotates relative to the handle to drive the push-pull assembly to extrude the extrusion assembly, the first elastic member is stretched within the elastic deformation range;

[0022] Alternatively, the first elastic member drives the handle to rotate by pressure to drive the push-pull assembly to remove the extrusion of the extrusion assembly, and in the process in which the wrench rotates relative to the handle to drive the push-pull assembly to extrude the extrusion assembly, the first elastic member is extruded within the elastic deformation range;

[0023] And / or, the mounting tube includes a first tube and a second tube that are interconnected, the first tube is connected between the second tube and the handle, and the outer diameter of the first tube is smaller than the outer diameter of the second tube, the extrusion assembly is arranged in the second tube, the push-pull assembly is passed through the first tube, and the extrusion end extends out of the first tube and is located in the second tube, and the ball head end extends out of the first tube and is located in the handle.

[0024] Further, the extrusion assembly includes a first extrusion member and a second extrusion member, the first extrusion member is rotatably connected in the mounting tube and is configured to form a first extrusion portion, the second extrusion member is connected to the mounting tube and is configured to form a second extrusion portion, the second extrusion portion and the first extrusion portion are configured to form an extrusion cavity, and the extrusion cavity is used to accommodate an extrusion ring;

[0025] Wherein, the first extrusion member has an initial position and an extrusion position under the drive of the push-pull assembly. When the first extrusion member is in the initial position, the first extrusion portion is away from the second extrusion portion, the cavity volume of the extrusion cavity is the largest, and the extrusion ring can enter and exit the extrusion cavity. When the first extrusion member is in the extrusion position, the first extrusion portion is close to the second extrusion portion, the cavity volume of the extrusion cavity is reduced, and the extrusion ring is squeezed and the suture passing through is locked;

[0026] and / or, the first extrusion member is made of a rigid structural member;

[0027] And / or, the second extruded member is fixedly connected to the mounting tube, or the second extruded member is integrally formed with the mounting tube;

[0028] And / or, the knotter further comprises an end cover, the end cover is covered on the second end and is structured to form a limiting hole connected to the extrusion cavity, the limiting hole is used for the main body of the extrusion ring to pass through and to limit the flange of the extrusion ring;

[0029] Wherein, the end cover is integrally formed with the second extruded member, or the end cover is integrally formed with the mounting tube, or the end cover is fixedly connected to the mounting tube.

[0030] Further, the push-pull assembly includes a connecting rod portion, the connecting rod portion is connected between the ball head end and the extrusion end, the connecting rod portion is structured to form a clamping portion, and the clamping portion is close to the extrusion end;

[0031] The knotter further comprises a cutter, wherein the cutter and the clamping portion are clamped with each other and are limitedly located between the connecting rod portion and the corresponding inner wall of the mounting tube;

[0032] Wherein, one of the cutter and the clamping part has a boss, and the other of the cutter and the clamping part has a slot, and the boss is adaptively clamped with the slot;

[0033] And / or, the mounting tube structure is formed with a wire passing hole and a wire passing cavity, the wire passing cavity is connected between the extrusion cavity and the wire passing hole, and the 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;

[0034] The push-pull assembly can sequentially reach a first position, a second position and a third position along a direction from the first end to the second end. When the push-pull assembly is in the first position, the first extrusion member is in the initial position, and the cutter is away from the wire-passing space.

[0035] When the push-pull assembly is in the second position, the first extrusion member is located at the extrusion position, and the cutter is close to the wire passing space;

[0036] When the push-pull assembly is in the third position, the first extrusion member is located at the extrusion position, the cutter is located in the thread passing space, and cuts off the suture passing through the thread passing space.

[0037] Further, the first extrusion member further comprises a first connecting arm and a first convex portion, wherein the first extrusion portion and the first convex portion are respectively connected to opposite ends of the first connecting arm, the first extrusion portion is close to the second end and faces the second extrusion portion, the first convex portion is away from the second end and faces away from the first extrusion portion, and the first connecting arm is rotatably connected to the mounting tube via a rotating shaft, and the rotating shaft is close to the first convex portion;

[0038] The push-pull assembly includes a connecting rod portion, the connecting rod portion is connected between the extrusion end and the ball end, the extrusion end includes a second protrusion and a second connecting arm, the second connecting arm is connected between the second protrusion and the connecting rod portion, the second protrusion faces the first protrusion, and an avoidance groove facing the first protrusion is formed between the second connecting arm and the connecting rod portion;

[0039] When the first extrusion member is in the initial position, the second protrusion presses the first protrusion, and the first extrusion member is away from the second extrusion member; when the first extrusion member is in the extrusion position, the second protrusion presses the first connecting arm to rotate along the rotating shaft, so that the first extrusion member is close to the second extrusion member, and the first protrusion is located in the avoidance groove;

[0040] Wherein, a side of the first connecting arm away from the first extrusion portion gradually tilts upward along a direction from the first end to the second end.

[0041] Further, the first extrusion member further comprises a first connecting arm and a third extrusion portion, the first extrusion portion and the third extrusion portion are respectively connected to opposite ends of the first connecting arm, the first extrusion portion is close to the second end and faces the second extrusion portion, the third extrusion portion is away from the second end, the first connecting arm is rotatably connected to the mounting tube via a rotating shaft, and the rotating shaft is close to the third extrusion portion;

[0042] The knotter further comprises a second elastic member, which is connected between the third extrusion portion and the inner wall of the mounting tube and is used to drive the first extrusion member to return from the extrusion position to the initial position;

[0043] The second elastic member is held between the third extrusion portion and the inner wall of the mounting tube away from the second extrusion member, and is extruded and deformed within an elastic range during the movement of the first extrusion member from the initial position to the extrusion position;

[0044] Alternatively, the second elastic member is connected between the third extrusion portion and an inner wall of the mounting tube close to the second extrusion member, and is stretched and deformed within an elastic range when the first extrusion member moves from the initial position to the extrusion position.

[0045] Furthermore, the second elastic member is a metal spring, and the metal spring is a hollow ring structure; the second connecting arm is arranged through the middle of the metal spring of the ring structure, and the metal spring is held between the inner wall of the mounting tube and the third extrusion portion;

[0046] Wherein, the metal spring sheet includes a first metal sheet and a second metal sheet, the first metal sheet is an arc-shaped structure with an opening toward the second connecting arm, the second metal sheet is fixedly connected to the inner wall of the mounting tube, and the second metal sheet is an arc-shaped structure with an opening toward the first metal sheet, and the first metal sheet and the second metal sheet are connected to each other to form a hollow ring structure;

[0047] The first metal sheet is an elastic structure;

[0048] Or; the second metal sheet is an elastic structure;

[0049] Alternatively, both the first metal sheet and the second metal sheet are elastic structures.

[0050] On the other hand, the present application also provides a knotter system, the knotter system comprising any of the above-mentioned knotters, and

[0051] A thread hook, the thread hook comprises a hook and a threading ring, the hook comprises a hook portion and a pulling portion, the pulling portion is connected to one end of the hook portion, the pulling portion passes through an extrusion ring and is sleeved on the threading ring, the threading ring is used for passing a suture, and after removing the threading ring, the part of the suture is passed through the pulling portion;

[0052] Wherein, the extrusion ring passing through the pulling part is located between the hook part and the threading ring, or the extrusion ring passing through the pulling part is inserted into the hook part;

[0053] And / or, the outer diameter of the hook portion along the extension direction of the hook portion 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 pulling portion is limited to be located between the hook portion and the threading ring;

[0054] And / or, the outer wall of the threading ring has a wire groove, and the pulling part is located in the wire groove.

[0055] In the knotter of the present application, the squeezing assembly is arranged in the mounting tube and close to the second end, the push-pull assembly is arranged in the mounting tube, and the squeezing assembly is squeezed or released by the squeezing end, and the mounting tube is extended from the first end by the ball head end to be universally connected with the wrench, so that the wrench rotates relative to the handle and drives the push-pull assembly to squeeze or release the squeezing assembly. Even if the movement stroke of the push-pull assembly relative to the mounting tube is long, the ball head end can adapt to the drive of the wrench and always maintain the axial direction of the mounting tube. The push-pull assembly moves synchronously with the wrench, so the part of the push-pull assembly extending out of the mounting tube and connected to the wrench is always maintained in the axial direction of the mounting tube and will not bend relative to the mounting tube, thereby avoiding damage to the knotter due to the bending of the push-pull assembly and thereby extending the service life of the knotter. In addition, the push-pull assembly can also move smoothly in the mounting tube along the axial direction of the mounting tube, and can reduce the force required for medical staff to apply to operate the wrench to rotate, and reduce the force required to drive the squeezing assembly to reset, thereby shortening the operation time and improving the surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0057] Figure 1 It is an overall schematic diagram of a knotter in one embodiment disclosed in the present application.

[0058] Figure 2 It is an exploded schematic diagram of a suture locking unit in one embodiment disclosed in the present application.

[0059] Figure 3 It is an exploded schematic diagram of an operating unit in an embodiment disclosed in the present application.

[0060] Figure 4 This is a cross-sectional schematic diagram of a knotter in an embodiment disclosed in the present application, which shows the relative positions of the wrench and the handle when the push-pull assembly is in the first position, and partially hides the suture locking unit.

[0061] Figure 5 This is a cross-sectional schematic diagram of a knotter in one embodiment disclosed in the present application, which shows the relative positions of the wrench and the handle when the push-pull assembly is in the second position, and partially hides the suture locking unit.

[0062] Figure 6This is a cross-sectional schematic diagram of a knotter in one embodiment disclosed in the present application, which shows the relative positions of the wrench and the handle when the push-pull assembly is in the third position, and partially hides the suture locking unit.

[0063] Figure 7 It is a schematic diagram of the structure of a wrench in one embodiment disclosed in the present application.

[0064] Figure 8 -A is a cross-sectional schematic diagram of a suture locking unit in an embodiment disclosed in the present application, showing the relative positions of the extrusion end and the first extrusion member when the push-pull assembly is in the first position;

[0065] Figure 8 -B is a cross-sectional schematic diagram of a suture locking unit in an embodiment disclosed in the present application, showing the relative position of the extrusion end and the first extrusion member when the push-pull assembly is in the second position;

[0066] Figure 8 -C is a cross-sectional schematic diagram of a suture locking unit in an embodiment disclosed in the present application, which shows the relative positions of the extrusion end and the first extrusion member when the push-pull assembly is in the third position.

[0067] Fig. 9 -A is a cross-sectional schematic diagram of a suture locking unit in an embodiment disclosed in the present application, showing the relative positions of the extrusion end and the first extrusion member when the push-pull assembly is in the first position, and the extrusion ring is not shown in the figure;

[0068] Fig. 9 -B is a cross-sectional schematic diagram of a suture locking unit in an embodiment disclosed in the present application, showing the relative positions of the extrusion end and the first extrusion member when the push-pull assembly is in the first position, and the extrusion ring is shown in the initial state;

[0069] Fig. 9 -C is a cross-sectional schematic diagram of a suture locking unit in an embodiment disclosed in the present application, showing the relative position of the extrusion end and the first extrusion member when the push-pull assembly is in the second position, and the extrusion ring is in an extrusion state, and the suture is not cut;

[0070] Fig. 9 -D is a cross-sectional schematic diagram of a suture locking unit in an embodiment disclosed in the present application, showing the relative positions of the extrusion end and the first extrusion member when the push-pull assembly is in the third position, and showing that the extrusion ring is in an extrusion state and the suture is cut;

[0071] Fig.10 This is a schematic diagram of the structure of a push-pull member in an embodiment disclosed in this application;

[0072] Fig.11 It is an overall schematic diagram of a knotter system in one embodiment disclosed in the present application;

[0073] Fig.12 -A is an overall schematic diagram of a thread hooking device in one embodiment disclosed in the present application;

[0074] Fig.12 -B is a schematic diagram of the connection between the wire hook and the extrusion ring in one embodiment disclosed in the present application;

[0075] Fig.13 -A is a schematic diagram of the coordination of a thread hook, a squeeze ring, a suture and a suture locking unit in one embodiment disclosed in the present application, wherein the threading ring is hidden in the figure;

[0076] Fig.13 -B is a cross-sectional schematic diagram of the coordination of the thread hook, the extrusion ring, the suture and the suture locking unit in one embodiment disclosed in the present application.

[0077] The above drawings include the following reference numerals:

[0078] Knotter 100, handle 10, limiting cavity 11, sliding cavity 12, connecting column 13, mounting tube 20, first tube 21, first end 211, second tube 22, second end 221, fitting portion 222, connector 23, wire hole 24, wire cavity 25, extrusion assembly 30, first extrusion member 31, first extrusion portion 311, first connecting arm 312, first convex portion 313, third extrusion portion 314, second extrusion member 32, second extrusion portion 321, extrusion cavity 33, end cover 34, limiting hole 341, wrench 40, connecting portion 41, swinging groove 411, limiting groove 412, notch 413, connecting hole 414, rotating portion 42, operating portion 43, rotating shaft 44, push-pull assembly 50, ball head member 51, ball head End 511, connecting rod portion 512, push-pull member 52, extrusion end 521, second convex portion 5211, second connecting arm 5212, connecting rod portion 522, clamping portion 523, boss 5231, first limiting surface 5232, second limiting surface 5233, avoidance groove 524, limiting member 53, fixing member 60, rotating shaft 70, rotating axis 71, cutting knife 80, clamping groove 81, first elastic member 91, second elastic member 92, first metal sheet 921, second metal sheet 922, extrusion ring 200, main body 210, flange portion 220, suture 300, knotter system 1000, thread hook 400, hook and pull member 410, hook portion 4101, pulling portion 4102, threading ring 420, thread groove 4201. DETAILED DESCRIPTION

[0079] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0080] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0081] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0082] See also Figure 1-4 and Fig.11 As shown, on one hand, 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 squeezing assembly 30 and a push-pull assembly 50; the operator unit includes a handle 10 and a wrench 40.

[0083] 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 to the handle 10, and the second end 221 extends out of the handle 10; the extrusion assembly 30 is disposed in the mounting tube 20 and close to the second end 221; the wrench 40 is rotatably connected to the handle 10; 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 to the wrench 40.

[0084] For further information, see Figure 2-4As shown, the push-pull assembly 50 has an opposite extrusion end 521 and a ball end 511. The ball end 511 extends out of the mounting tube 20 and is universally connected to the wrench 40 in the handle 10. The extrusion end 521 is located in the mounting tube 20 and close to the second end 221. The wrench 40 rotates relative to the handle 10 under the action of an external force, and drives the push-pull assembly 50 to move along the axial direction of the mounting tube 20, so as to drive the extrusion assembly 30 to extrude or release the extrusion ring 200.

[0085] Through the universal connection between the push-pull assembly 50 and the wrench 40, even if the push-pull assembly 50 has a long movement stroke relative to the mounting tube 20, the ball head end 511 can also adapt to the drive of the wrench 40 and always keep moving relative to the mounting tube 20 along the axial direction of the mounting tube 20. Therefore, the part of the push-pull assembly 50 extending out of the mounting tube 20 and connected to the wrench 40 also always remains in the axial direction of the mounting tube 20 and will not bend relative to the mounting tube 20, thereby avoiding the knotter 100 from being bent due to the push-pull assembly. 50 is not damaged by bending, thereby extending the service life of the knotter 100. In addition, the push-pull component 50 can move smoothly relative to the mounting tube 20, thereby reducing the force applied to the wrench 40 to drive the push-pull component 50 to move, and reducing the force that drives the push-pull component 50 to reset. At the same time, the service life of the wrench 40, the push-pull component 50 and the mounting tube 20 is effectively improved, thereby improving the service life of the knotter 100 and ensuring the accuracy of the knotter 100 when it is reused.

[0086] See also Figure 3-4 As shown, one end of the mounting tube 20 extending into the handle 10 is threadedly connected to the fixing member 60. A limiting cavity 11 is also provided in the handle 10. The fixing member 60 is disposed in the limiting cavity 11, so that the fixing member 60 is limitedly clamped in the limiting cavity 11 to achieve a fixed connection between the mounting tube 20 and the handle 10.

[0087] For further information, see Figure 4-7 As shown, the wrench 40 includes a connecting portion 41, a rotating portion 42 and an operating portion 43. The rotating portion 42 is rotatably connected to the handle 10 through a rotating shaft 44 and is located between the connecting portion 41 and the operating portion 43; the connecting portion 41 is universally connected to the ball head 51, and the operating portion 43 extends out of the handle 10 and drives the wrench 40 to rotate along the rotating portion 42 under the action of an external force, so that the connecting portion 41 drives the push-pull assembly 50 to move along the axial direction of the mounting tube 20.

[0088] The operating portion 43 can be matched with the handle 10 for medical personnel to hold, and the operating portion 43 can be pulled or released to allow the wrench 40 to rotate relative to the handle 10 .

[0089] For further information, see Figure 3-6 As shown, the push-pull assembly 50 includes a ball head member 51 and a push-pull member 52 connected to each other along the axial direction of the mounting tube 20. The ball head member 51 forms the ball head end 511 and the connecting rod portion 512, and the opposite ends of the connecting rod portion 512 are respectively connected between the ball head end 511 and one end of the push-pull member 52 extending from the mounting tube 20, so that the wrench 40 rotates and drives the push-pull member 52 and the ball head member 51 to keep moving along the axial direction of the mounting tube 20.

[0090] For further information, see Figure 4-7 As shown, the connecting portion 41 is structured to form a swing groove 411, a limit groove 412 and a notch 413. The notch 413 is connected to the same side of the swing groove 411 and the limit groove 412, and is used for the ball head end 511 to enter the limit groove 412, and for the connecting rod part 512 to enter the swing groove 411, so as to facilitate the assembly of the ball head 51 on the connecting portion 41.

[0091] The swing groove 411 is connected to the limit groove 412, and the swing groove 411 is V-shaped in the direction away from the limit groove 412. The ball head end 511 is arranged in the limit groove 412, and the connecting rod part 512 passes through the swing groove 411 and is connected with one end of the push-pull member 52 extending out of the mounting tube 20 along the axial direction of the mounting tube 20.

[0092] Furthermore, the connecting opening between the swing groove 411 and the limiting groove 412 allows the connecting rod portion 512 to pass through, so that the connecting rod portion 512 is connected to the ball head end 511 located in the limiting groove 412. At the same time, the connecting opening also limits the ball head end 511 from entering the swing groove 411 from the limiting groove 412, so that the push-pull assembly 50 can be connected to the wrench 40 through the ball head end 511 of the ball head piece 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 extrude the extrusion assembly 30 or remove the extrusion of the extrusion assembly 30.

[0093] Furthermore, the spacing of the connecting port along the direction perpendicular to the rotation direction of the handle 10 is smaller than the diameter of the ball head end 511 and larger than the diameter of the connecting rod portion 512, so that the ball head end 511 can be movably confined in the limiting groove 412, and the connecting rod portion 512 can be movably confined in the swinging groove 411.

[0094] By providing the V-shaped swing groove 411 and the limit groove 412, when the ball head member 51 is subjected to the push or pull force of the wrench 40 to drive the push-pull member 52 to move relative to the mounting tube 20, the ball head member 51 and the push-pull member 52 always maintain axial movement of the mounting tube 20, thereby preventing the end of the push-pull component 50 extending out of the mounting tube 20 and close to the wrench 40 from axially deflecting relative to the mounting tube 20 under the drive of the wrench 40, causing the push-pull component 50 to squeeze and limit each other between the position where it extends out of the mounting tube 20 and the inner wall of the mounting tube 20, causing the push-pull component 50 to move relative to the mounting tube 20 not smoothly, increasing the resistance to driving the push-pull component 50 to move, and causing the mounting tube 20 and the push-pull component 50 to produce irreversible deformation, affecting the accuracy of the knotter 100.

[0095] For further information, see Figure 3-6 As shown, the handle 10 is structured to form a sliding cavity 12 , and the sliding cavity 12 is located in the movement direction of the push-pull assembly 50 away from the extrusion assembly 30 and between the first end 211 and the wrench 40 .

[0096] The push-pull assembly 50 also includes a limit member 53, which 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; thereby, the push-pull member 52 is connected to the ball head member 51, and the limit member 53 slides in the sliding cavity 12 along the axial direction of the mounting tube 20, so that the push-pull assembly 50 can stably maintain axial movement along the mounting tube 20 and will not rotate relative to the central axis of the mounting tube 20, thereby enabling the push-pull assembly 50 to stably and accurately extrude or release the extrusion assembly 30.

[0097] Further, the limiting member 53, the push-pull member 52 and the ball head member 51 are detachably connected to facilitate the assembly of the ball head member 51 and the handle 10. Alternatively, the limiting member 53, the push-pull member 52 and the ball head member 51 are integrally formed to enhance the structural strength between the limiting member 53, the push-pull member 52 and the ball head member 51, and to simplify the assembly steps. Alternatively, the limiting member 53 and the push-pull member 52 are integrally formed, and the limiting member 53 and / or the push-pull member 52 are detachably connected to the ball head member 51, so as to enhance the structural strength between the limiting member 53 and the push-pull member 52, and to facilitate the assembly of the ball head member 51 and the handle 10 and to simplify the assembly steps. Alternatively, the limiting member 53 and the ball head member 51 are integrally formed, and the limiting member 53 and / or the ball head member 51 are detachably connected to the push-pull member 52, so as to simplify the assembly steps.

[0098] For further information, see Figure 3-6 As shown, the knotter 100 includes a first elastic member 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 to drive the handle 10 to rotate to drive the push-pull assembly 50 to remove the extrusion of the extrusion assembly 30.

[0099] In an embodiment of the present application, the first elastic member 91 drives the handle 10 to rotate through a pulling force to drive the push-pull assembly 50 to remove the extrusion of the extrusion assembly 30. During the process in which 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 stretched within the elastic deformation range.

[0100] Furthermore, the first elastic member 91 may be an elastic member such as a tension spring, an elastic rope, an elastic band, etc., which is elastically stretched and can be reset after being subjected to tension.

[0101] For further information, see Figure 4-7 As shown, the wrench 40 also has a connecting hole 414 on the connecting portion 41, the handle 10 has a connecting column 13, the elastic member is connected between the connecting hole 414 and the connecting column 13, and in the process of the wrench 40 rotating and driving the push-pull assembly 50 to move relative to the mounting tube 20, the first elastic member 91 is stretched within its elastic deformation range, and when the external force applied to the wrench 40 is removed, the first elastic member 91 drives the wrench 40 to rotate in the opposite direction so that the push-pull assembly 50 removes the extrusion force on the extrusion assembly 30.

[0102] In an embodiment of the present application, the first elastic member 91 can also drive the handle 10 to rotate through pressure to drive the push-pull assembly 50 to remove the extrusion of the extrusion assembly 30. In the process of the wrench 40 rotating relative to the handle 10 to drive the push-pull assembly 50 to extrude the extrusion assembly 30, the first elastic member 91 is squeezed within the elastic deformation range.

[0103] Furthermore, the first elastic member 91 can be a metal spring, a silicone spring, a compression spring, or the like, which is an elastic member that is elastically squeezed and can be reset after being subjected to a squeezing force.

[0104] Furthermore, the first elastic member 91 can be held between the connecting portion 41 and an end of the handle 10 close to the limit member 53, or between the gripping portion and an end of the handle 10 away from the limit member 53, or can be sleeved on the connecting rod portion 512 and held between the limit member 53 and the connecting portion 41, or can be sleeved on the push-pull member 52 and held between the first end 211 and the limit member 53. In the process of the wrench 40 rotating and driving the push-pull assembly 50 to move relative to the mounting tube 20, the first elastic member 91 is squeezed within its elastic deformation range, and when the external force applied to the wrench 40 is removed, the first elastic member 91 drives the wrench 40 to rotate in the opposite direction so that the push-pull assembly 50 removes the squeezing force on the squeezing assembly 30.

[0105] Among them, when the first elastic member 91 is sleeved on the connecting rod portion 512 and abutted between the limiting member 53 and the connecting portion 41, or is sleeved on the push-pull member 52 and abutted between the first end 211 and the limiting member 53, the direction of elastic deformation of the first elastic member 91 can be made to be in the same direction as the axial direction of the mounting tube 20, thereby reducing the force required to extrude the first elastic member 91 and making full use of the deformation force released by the reset of the first elastic member 91 after being squeezed.

[0106] For further information, see Figure 1 As shown, in an embodiment of the present application, the mounting tube 20 is an integrated structure, and the outer diameter of the mounting tube 20 from the first end 211 to the second end 221 is the same, so that the structure of the mounting tube 20 is simpler and has better structural strength.

[0107] See also Figure 2 , 8As shown, in the embodiment of the present application, the mounting tube 20 may also be a split structure, and includes a first tube 21 and a second tube 22 that are interconnected. The first tube 21 is connected between the second tube 22 and the handle 10, and the outer diameter of the first tube 21 is smaller than the outer diameter of the second tube 22, the extrusion assembly 30 is arranged in the second tube 22, the push-pull assembly 50 is penetrated in the first tube 21, and the extrusion end 521 extends out of the first tube 21 and is located in the second tube 22, and the ball end 511 extends out of the first tube 21 and is located in the handle 10.

[0108] By setting the outer diameter of the first tube 21 to be smaller than the outer diameter of the second tube 22 , the first tube 21 passing through the patient's body surface can avoid squeezing the wound on the patient's body surface and facilitate operation by medical staff.

[0109] Furthermore, the connection between the first tube 21 and the second tube 22 is connected through a connector 23, wherein the second tube 22 is nested on the outside of the connector 23 and smoothly connected with the outer wall of the connector 23, so that the second tube 22 can smoothly enter and exit the patient's body and avoid scratching the patient's tissue at the connection between the second tube 22 and the connector 23. The first tube 21 is inserted into the connector 23, and the outer wall of the connector 23 between the first tube 21 and the second tube 22 gradually transitions in the form of an annular bevel, so that the knotter 100 can be prevented from scratching the patient's tissue when it is withdrawing from the patient's body.

[0110] For further information, see Figure 2 , 8 As shown in Figure 9, the extrusion assembly 30 includes a first extrusion member 31 and a second extrusion member 32. The first extrusion member 31 is rotatably connected to the mounting tube 20 and is configured to have a first extrusion portion 311. The second extrusion member 32 is connected to the mounting tube 20 and is configured to have a second extrusion portion 321. The second extrusion portion 321 and the first extrusion portion 311 form an extrusion cavity 33, and the extrusion cavity 33 is used to accommodate the extrusion ring 200. The first extrusion member 31 rotates to drive the first extrusion portion 311 close to the second extrusion portion 321 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 away from the second extrusion portion 321 to release the extrusion ring 200 located in the extrusion cavity 33.

[0111] For further information, see Fig. 9As shown in Figures 9-B and 9-C, the extrusion ring 200 has an initial state and an extrusion state. When the extrusion ring 200 is in the initial state, the suture 300 can enter and exit the extrusion ring 200 and move relative to the extrusion ring 200; when the extrusion ring 200 is in the extrusion state, the suture 300 passing through the extrusion ring 200 is clamped by the extrusion ring 200 and cannot move relative to the extrusion ring 200.

[0112] The first extrusion member 31 has an initial position and an extrusion position driven by the push-pull assembly 50. When the first extrusion member 31 is in the initial position, the first extrusion portion 311 is away from the second extrusion portion 321. At this time, the cavity volume of the extrusion cavity 33 is the largest, and the extrusion ring 200 in the initial state or the extrusion state can freely enter and exit the extrusion cavity 33; when the first extrusion member 31 is in the extrusion position, the first extrusion portion 311 is close to the second extrusion portion 321, and the cavity volume of the extrusion cavity 33 is reduced. At this time, the extrusion ring 200 is squeezed and the suture 300 passing through is locked.

[0113] By only arranging the first extrusion member 31 to rotate and move closer to or farther away from the second extrusion member 32 , the extrusion assembly 30 can have higher precision and be more convenient to control the extrusion assembly 30 to perform the extrusion and release of the extrusion ring 200 .

[0114] Furthermore, the first extrusion member 31 is made of a rigid structural member, so that the first extrusion member 31 is a rigid structural member, so that the first extrusion member 31 can always maintain its original external shape under the drive of the push-pull component 50, and cooperate with the second extrusion member 32 to effectively and accurately extrude the extrusion ring 200.

[0115] Furthermore, the first extrusion portion 311 is tooth-shaped and protrudes toward the second extrusion portion 321, and the second extrusion portion 321 is groove-shaped and corresponds to the first extrusion portion 311. When the first extrusion member 31 is in the extrusion position, the extrusion ring 200 is in the extrusion state and is extruded to a V-shape. Thus, the overall length of the extrusion ring 200 can be shortened, which is beneficial to control the amount and volume of implants such as the extrusion ring 200 and the suture 300, increase the efficiency of wound healing of the patient, and shorten the time for the patient to recover after surgery.

[0116] For further information, see Figure 8-9As shown, the second extrusion member 32 is fixedly connected to the mounting tube 20. The extending direction of the groove-shaped second extrusion portion 321 is parallel to the rotation axis 71 of the first extrusion member 31, and the mounting tube 20 is formed with a fitting portion 222 corresponding to the second extrusion portion 321, and the fitting portion 222 is fitted and connected with the second extrusion portion 321. Thus, the second extrusion portion 321 and the mounting tube 20 are mutually limited in the axial direction of the mounting tube 20, and are fixedly connected by welding or bonding, so that the vacancy of the fitting portion 222 can be filled by the outer side of the second extrusion portion 321, and the length of the mounting tube 20 can be effectively controlled.

[0117] Alternatively, the second extrusion piece 32 and the mounting tube 20 are integrally formed so that the structural strength between the second extrusion piece 32 and the mounting tube 20 is greater, so as to cooperate with the first extrusion piece 31 to effectively and accurately extrude the extrusion ring 200, simplify the assembly steps, and improve the assembly efficiency.

[0118] For further information, see Figure 2 , 8 As shown in FIG. 9 , the knotter 100 further includes an end cover 34 . The end cover 34 covers the second end 221 and is configured to form a limiting hole 341 communicating with the extrusion cavity 33 .

[0119] The extrusion ring 200 includes a main body 210 and a flange 220 . The flange 220 is located at one end of the main body 210 and protrudes outward in a radial direction of the main body 210 .

[0120] The limiting hole 341 is used for allowing the main body 210 of the extrusion ring 200 to pass through, and to limit the flange portion 220 of the extrusion ring 200, so that the extrusion ring 200 can be inserted into a specified position in the extrusion cavity 33, so as to accurately extrude the extrusion ring 200, so that the extrusion ring 200 squeezed to the extrusion state can effectively lock the passed suture 300.

[0121] Further, the end cap 34 is integrally formed with the second extrusion piece 32, so that the end cap 34 and the second extrusion piece 32 have good structural strength, simplify the assembly steps and improve the assembly efficiency, and ensure the matching accuracy between the limiting hole 341 and the extrusion cavity 33; or, the end cap 34 is integrally formed with the mounting tube 20, so that the end cap 34 and the mounting tube 20 are smoothly connected, avoiding the mounting tube 20 from scratching the patient's tissue when entering and exiting the patient's body, and making the end cap 34 and the mounting tube 20 have good structural strength, simplifying the assembly steps and improving the assembly efficiency; or, the end cap 34 is fixedly connected to the mounting tube 20 and fixedly connected to the end cap 34 by bonding or welding, so that the extrusion assembly 30 and the push-pull assembly 50 are first installed in the mounting tube 20 from the second end 221, and then the end cap 34 is installed on the mounting tube 20.

[0122] For further information, see Figure 2 , 10 As shown, the push-pull member 52 includes a connecting rod portion 522. The connecting rod portion 522 is connected between the ball end 511 and the extrusion end 521, wherein the connecting rod portion 522 is at least adapted to the inner wall of the first tube 21 and inserted into the first tube 21, so that the push-pull assembly 50 can maintain axial movement along the mounting tube 20.

[0123] The connecting rod portion 522 is structured to form a clamping portion 523, and the clamping portion 523 is close to the extrusion end 521. The knotter 100 also includes a cutter 80, which is mutually clamped with the clamping portion 523 and is limited between the connecting rod portion 522 and the corresponding inner wall of the mounting tube 20, and is used to move synchronously with the push-pull member 52, and cut off the excess suture 300 extending out of the extrusion ring 200 when the extrusion ring 200 is in the extrusion state.

[0124] One of the cutter 80 and the engaging portion 523 has a boss 5231 , and the other of the cutter 80 and the engaging portion 523 has a slot 81 , and the boss 5231 and the slot 81 are adaptively engaged.

[0125] Furthermore, the clamping portion 523 includes a first limiting surface 5232 and a second limiting surface 5233 adjacent to each other, wherein the first limiting surface 5232 is away from the extrusion end 521, and the second limiting surface 5233 is toward the extrusion end 521, the boss 5231 is arranged on the first limiting surface 5232, the cutter 80 has the clamping groove 81, the clamping groove 81 is limitedly clamped with the boss 5231, and the end of the cutter 80 away from its blade is connected to the second limiting surface. The first limiting surface 5233 abuts against the first limiting surface 5233, and the side close to the boss 5231 abuts against the first limiting surface 5232, and the side away from the first limiting surface 5232 abuts against the inner wall of the mounting tube 20, so that the cutter 80 is limitedly clamped between the clamping portion 523 and the corresponding inner wall of the mounting tube 20, and the limit clamping of the cutter 80 can be achieved without setting a fixed structure, so as to facilitate the assembly of the cutter 80 or the replacement of the cutter 80.

[0126] For further information, see Figure 8-9 As shown, the mounting tube 20 is structured to have a wire hole 24 and a wire cavity 25. The wire cavity 25 is connected between the extrusion cavity 33 and the wire hole 24, and the suture 300 passing through the extrusion ring 200 passes through the wire cavity 25 and the wire hole 24 in sequence and extends out of the mounting tube 20.

[0127] The push-pull assembly 50 can sequentially reach a first position, a second position, and a third position along a direction from the first end 211 to the second end 221 .

[0128] See also Figure 4 , 8 -As shown in A, when the push-pull assembly 50 is in the first position, the first extrusion member 31 is in the initial position, the cutter 80 is away from the wire passing space, and the extrusion ring 200 in the initial state can freely enter and exit the extrusion cavity 33 from the limiting hole 341.

[0129] See also Figure 5 , 8 -B shows that when the push-pull assembly 50 is in the second position, the first extrusion member 31 is located at the extrusion position, the first extrusion portion 311 is close to the second extrusion portion 321, and the extrusion ring 200 located in the extrusion cavity 33 is squeezed to the extrusion state, and the extrusion ring 200 in the extrusion state clamps the passing suture 300, and at this time, the cutter 80 is close to the thread passing space.

[0130] See also Figure 6 , 8- As shown in FIG. 3 , when the push-pull assembly 50 is in the third position, the first extrusion member 31 is located at the extrusion position, the first extrusion portion 311 is close to the second extrusion portion 321, and the extrusion ring 200 in the extrusion state is clamped in the extrusion cavity 33. At this time, the cutter 80 is located in the thread passing space, and cuts off the suture 300 passing through the thread passing space, so that the excess suture 300 is removed.

[0131] Furthermore, the push-pull assembly 50 is reset from the third position to the first position under the drive of the first elastic member 91, and the first extrusion member 31 is away from the second extrusion member 32, so that the extrusion assembly 30 no longer clamps the extrusion ring 200 in the extrusion state, thereby allowing the extrusion ring 200 in the extrusion state to smoothly withdraw from the extrusion cavity 33 from the limiting hole 341 and be implanted into the patient's body.

[0132] For further information, see Fig. 9 As shown, in the embodiment of the present application, the first extrusion member 31 further includes a first connecting arm 312 and a first convex portion 313, and the first extrusion portion 311 and the first convex portion 313 are respectively connected to opposite ends of the first connecting arm 312. The first extrusion portion 311 is close to the second end 221 and faces the second extrusion portion 321, and the first convex portion 313 is away from the second end 221 and away from the first extrusion portion 311, so that the first extrusion portion 311 and the first convex portion 313 are respectively located on opposite sides of the first connecting arm 312 and away from each other, and the protrusion directions are opposite. The first connecting arm 312 is rotatably connected to the mounting tube 20 via a rotating shaft 70, and the rotating shaft 70 is close to the first protrusion 313, so that the first connecting arm 312 has a longer force arm between the first extrusion portion 311 and the rotating shaft 70, so that when the push-pull assembly 50 drives the first extrusion member 31 to move from the first position to the second position and the third position, less force needs to be applied to the first connecting arm 312, and medical staff can operate more smoothly and conveniently.

[0133] The rotating shaft 70 may be fixedly connected to the first extrusion member 31 and rotatable relative to the mounting tube 20; or, the rotating shaft 70 may be integrally formed with the first extrusion member 31 and rotatable relative to the mounting tube 20; or, the rotating shaft 70 may be fixedly connected to the mounting tube 20, and the first extrusion member 31 may be rotatable relative to the rotating shaft 70. This is not limited here.

[0134] Furthermore, the extrusion end 521 includes a second protrusion 5211 and a second connecting arm 5212 , wherein the second connecting arm 5212 is connected between the second protrusion 5211 and the connecting rod portion 522 , and is parallel to the cutter 80 along the axial direction of the mounting tube 20 .

[0135] The second protrusion 5211 faces the first protrusion 313 so that the second protrusion 5211 and the first protrusion 313 are opposite to each other, and an avoidance groove 524 facing the first protrusion 313 is formed between the second protrusion 5211, the second connecting arm 5212 and the connecting rod portion 522.

[0136] When the first extrusion member 31 is in the initial position, the second protrusion 5211 squeezes the first protrusion 313, so that the first extrusion member 31 rotates relative to the rotating shaft 70, thereby making the first extrusion portion 311 move away from the second extrusion portion 321, thereby realizing the first extrusion member 31 being reset from the extrusion position to the initial position, or the first extrusion member 31 being maintained at the initial position.

[0137] When the first extrusion member 31 is in the extrusion position, the second protrusion 5211 squeezes 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 can squeeze the side of the first connecting arm 312 away from the first extrusion portion 311 through the first protrusion 313, 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.

[0138] Compared with providing an elastic structure to drive the first extrusion member 31 to reset from the extrusion position to the initial position, the present embodiment does not need to provide an elastic structure, so that the structure of the knotter 100 is simpler, the assembly steps are reduced, and the assembly efficiency is improved.

[0139] Furthermore, the side of the first connecting arm 312 away from the first extrusion portion 311 is gradually inclined upward along the direction from the first end 211 to the second end 221, so that the side of the first connecting arm 312 away from the first extrusion portion 311 is an inclined surface, and the extrusion end 521 moves from the first end 211 to the second end 221 and abuts against the inclined surface so that the first extrusion member 31 rotates to drive the first extrusion portion 311 to approach the second extrusion portion 321, thereby effectively extending the travel of the first extrusion member 31 in contact with and being extruded by the push-pull component 50, thereby ensuring that the force applied to the push-pull component 50 acts smoothly on the first extrusion member 31.

[0140] Further, in the implementation of this application, please refer to Figure 2 , 8 As shown, the first extrusion member 31 also includes a first connecting arm 312 and a third extrusion portion 314, the first extrusion portion 311 and the third extrusion portion 314 are respectively connected to the opposite ends of the first connecting arm 312, the first extrusion portion 311 is close to the second end 221 and faces the second extrusion portion 321, and the third extrusion portion 314 is away from the second end 221, the first connecting arm 312 is rotatably connected to the mounting tube 20 through a rotating shaft 70, and the rotating shaft 70 is close to the third extrusion portion 314, so that the first connecting arm 312 has a longer force arm between the first extrusion portion 311 and the rotating shaft 70, so that when the push-pull assembly 50 drives the first extrusion member 31 to move from the first position to the second position and the third position, the force required to be applied to the first connecting arm 312 is smaller, and it is convenient for medical staff to operate more smoothly and conveniently.

[0141] Furthermore, the knotter 100 further includes a second elastic member 92, which is connected between the third extrusion portion 314 and the inner wall of the mounting tube 20, and is used for driving the first extrusion member 31 to return from the extrusion position to the initial position.

[0142] The second elastic member 92 is held between the third extrusion portion 314 and the inner wall of the mounting tube 20 away from the second extrusion member 32 , and is extruded and deformed within an elastic range when the first extrusion member 31 moves from the initial position to the extrusion position.

[0143] Furthermore, the second elastic member 92 is held between the third extrusion 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 in the process of the first extrusion portion 311 approaching the second extrusion portion 321, the third extrusion portion 314 extrudes the second elastic member 92 in the opposite direction, so that the second elastic member 92 is elastically deformed within an elastic range.

[0144] Further, the second elastic member 92 can be a metal spring, which is a hollow ring structure, such as an elliptical shape, a circular ring shape, etc., which is not limited here. The second connecting arm 5212 is arranged in the middle of the metal spring of the ring structure, and the metal spring is held between the inner wall of the mounting tube 20 and the third pressing portion 314.

[0145] The metal spring sheet includes a first metal sheet 921 and a second metal sheet 922, wherein the first metal sheet 921 is an arc-shaped structure with an opening toward the second connecting arm 5212, the second metal sheet 922 is fixedly connected to the inner wall of the mounting tube 20, and the second metal sheet 922 is an arc-shaped structure with an opening toward the first metal sheet 921, and the first metal sheet 921 and the second metal sheet 922 are interconnected to form a hollow ring structure.

[0146] 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.

[0147] Alternatively, the second elastic member 92 is connected between the third extrusion portion 314 and the inner wall of the mounting tube 20 close to the second extrusion member 32 , and is stretched and deformed within an elastic range when the first extrusion member 31 moves from the initial position to the extrusion position.

[0148] Furthermore, the second elastic member 92 is held between the third extrusion 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 in the process of the first extrusion portion 311 approaching the second extrusion portion 321, the third extrusion portion 314 stretches the second elastic member 92 in the opposite direction so that the second elastic member 92 is elastically deformed within the elastic range.

[0149] Furthermore, the second elastic member 92 may be a tension spring, an elastic rope, an elastic band, etc., which are elastic structures that are elastically stretched and can be reset after being subjected to tension, and are not limited here.

[0150] See also Figure 11-13As shown, on the other hand, the present application further provides a knotter system 1000, and the knotter system 1000 includes any of the above-mentioned knotters 100. Therefore, the knotter system 1000 has all the above-mentioned beneficial effects, which will not be described in detail here.

[0151] Further, the knotter system 1000 also includes a thread hook 400. The thread hook 400 is used to cooperate with the knotter 100 to place the extrusion ring 200 in the extrusion cavity 33, and pass the suture 300 extending from the suture tissue through the extrusion ring 200 and extend the knotter 100 from the thread hole 24.

[0152] Further, the thread hook 400 includes a hooking member 410 and a threading ring 420. The hooking member 410 includes a hook portion 4101 and a pulling portion 4102, wherein 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 threading ring 420, and the threading ring 420 is used for passing the suture 300, and after removing the threading ring 420, the part of the suture 300 passes through the pulling portion 4102.

[0153] The outer diameter of the hook portion 4101 along the extension direction of the hook portion 4101 is smaller than the aperture of the limiting hole 341 and larger than the aperture of the extrusion ring 200, so that the extrusion ring 200 passing through the pulling portion 4102 is limited between the hook portion 4101 and the threading ring 420; or, the extrusion ring 200 passing through the pulling portion 4102 is plugged into the hook portion 4101, so that the extrusion ring 200 can be pre-limited and connected to the threading ring 420. The hook portion 4101 is close to one end of the pulling portion 4102, so as to pre-assemble the extrusion ring 200 onto the wire hook 400, and the hook portion 4101 is passed through the limiting hole 341, the extrusion cavity 33, the wire passing cavity 25 and the wire passing hole 24 in sequence, so as to realize that the main body 210 of the extrusion ring 200 is assembled to the extrusion cavity 33 and the flange portion 220 is limited in the limiting hole 341. The hole 341 is away from one side of the extrusion cavity 33, so that the extrusion ring 200 can be quickly and efficiently assembled on the knotter 100 through the hook 400. At the same time, the extrusion ring 200 can be limited by the threading ring 420 to prevent the extrusion ring 200 from falling, and the pulling part 4102 can be supported by the threading ring 420, so that the suture 300 extending out of the suture tissue can first pass through the threading ring 420, and pass through the rope-shaped pulling part 4102 after removing the threading ring 420, and further in the process of pulling the hook part 4101 out of the knotter 100, the suture 300 passing through the pulling part 4102 can pass through the extrusion ring 200, the threading cavity 25 and the threading hole 24 in sequence together with the pulling part 4102 and then extend out of the knotter 100, thereby realizing the threading action of the suture 300 passing through the extrusion ring 200.

[0154] Among them, the pulling part 4102 is a rope-like structure such as cotton rope, steel wire rope, etc., which is easy to bend and has sufficient strength and is clean, so as to facilitate passing through the extrusion ring 200 and being sleeved on the threading ring 420, as well as to facilitate removing the threading ring 420 and passing through the extrusion ring 200, the wire passing cavity 25 and the wire passing hole 24 in sequence.

[0155] For further information, see Figure 12-13 As shown, the outer wall of the threading ring 420 has a wire groove 4201 , and the pulling portion 4102 is located in the wire groove 4201 , so that the pulling portion 4102 can be stably sleeved on the threading ring 420 .

[0156] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0157] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0158] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A knotter, characterized in that: include: handle; a mounting tube having a first end and a second end opposite to each other, the first end being connected to the handle and the second end extending out of the handle; an extrusion assembly disposed in the mounting tube and close to the second end; as well as A wrench and a push-pull assembly, wherein the wrench is rotatably connected to the handle, the push-pull assembly has an extrusion end and a ball end relative to each other, the ball end extends out of the mounting tube and is universally connected to the wrench in the handle, the extrusion end is located in the mounting tube and close to the second end, the wrench rotates relative to the handle under the action of an external force, and drives the push-pull assembly to move axially along the mounting tube, so as to drive the extrusion assembly to extrude or release the extrusion ring.

2. The knotter according to claim 1, characterized in that: 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 located between the connecting part and the operating part, the connecting part is rotatably connected to 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 an external force, so that the connecting part drives the push-pull assembly to move axially along the mounting tube; Wherein, the push-pull assembly comprises a ball head member and a push-pull member, the ball head member comprises a connecting rod portion and the ball head end, the push-pull member comprises the extrusion end, and an end of the push-pull member away from the extrusion end is connected to an end of the connecting rod portion away from the ball head end; The connecting portion is structured to form a swing groove, a limit groove and a notch, wherein the notch is respectively connected to the same side of the swing groove and the limit groove, and is used for the ball head end to enter the limit groove, and for the connecting rod to enter the swing groove, the swing groove is connected to the limit groove, and the swing groove is V-shaped in the direction away from the limit groove.

3. The knotter according to claim 2, characterized in that: The connecting opening between the swing groove and the limiting groove allows the connecting rod to pass through, and restricts the ball head end from entering the swing groove from the limiting groove; Wherein, the spacing of the communication openings along a 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.

4. The knotter according to claim 1, characterized in that: The handle structure is formed with a sliding cavity, and the sliding cavity is located in the movement direction of the push-pull assembly away from the squeezing assembly; The push-pull assembly includes a push-pull member, a stopper and a ball head member, wherein the stopper is connected between the ball head member and one end of the push-pull member extending out of the mounting tube and is slidably limited in the sliding cavity along the movement direction of the push-pull member, the push-pull member is structured to form the extrusion end, and the ball head member is structured to form the ball head end; Wherein, the position-limiting member, the push-pull member and the ball head member are detachably connected; Alternatively, the position-limiting member, the push-pull assembly and the ball head member are integrally formed; Alternatively, the limiting member and the push-pull member are integrally formed, and the ball head member is detachably connected to the push-pull member and / or the limiting member; Alternatively, the limiting member and the ball head member are integrally formed, and the push-pull member is detachably connected to the ball head member and / or the limiting member; And / or, the knotter further comprises a first elastic member, which is disposed in the handle and connected between the wrench and the handle, and is used to drive the handle to rotate so as to drive the push-pull assembly to remove the extrusion of the extrusion assembly; Wherein, the first elastic member drives the handle to rotate through a pulling force to drive the push-pull assembly to remove the extrusion of the extrusion assembly, and in the process in which the wrench rotates relative to the handle to drive the push-pull assembly to extrude the extrusion assembly, the first elastic member is stretched within the elastic deformation range; Alternatively, the first elastic member drives the handle to rotate by pressure to drive the push-pull assembly to remove the extrusion of the extrusion assembly, and in the process in which the wrench rotates relative to the handle to drive the push-pull assembly to extrude the extrusion assembly, the first elastic member is extruded within the elastic deformation range; And / or, the mounting tube includes a first tube and a second tube that are interconnected, the first tube is connected between the second tube and the handle, and the outer diameter of the first tube is smaller than the outer diameter of the second tube, the extrusion assembly is arranged in the second tube, the push-pull assembly is passed through the first tube, and the extrusion end extends out of the first tube and is located in the second tube, and the ball head end extends out of the first tube and is located in the handle.

5. The knotter according to any one of claims 1 to 4, characterized in that: The extrusion assembly includes a first extrusion member and a second extrusion member, the first extrusion member is rotatably connected in the mounting tube and is configured to form a first extrusion portion, the second extrusion member is connected to the mounting tube and is configured to form a second extrusion portion, the second extrusion portion and the first extrusion portion are configured to form an extrusion cavity, and the extrusion cavity is used to accommodate an extrusion ring; Wherein, the first extrusion member has an initial position and an extrusion position under the drive of the push-pull assembly. When the first extrusion member is in the initial position, the first extrusion portion is away from the second extrusion portion, the cavity volume of the extrusion cavity is the largest, and the extrusion ring can enter and exit the extrusion cavity. When the first extrusion member is in the extrusion position, the first extrusion portion is close to the second extrusion portion, the cavity volume of the extrusion cavity is reduced, and the extrusion ring is squeezed and the suture passing through is locked; and / or, the first extrusion member is made of a rigid structural member; And / or, the second extruded member is fixedly connected to the mounting tube, or the second extruded member is integrally formed with the mounting tube; And / or, the knotter further comprises an end cover, the end cover is covered on the second end and is structured to form a limiting hole connected to the extrusion cavity, the limiting hole is used for the main body of the extrusion ring to pass through and to limit the flange of the extrusion ring; Wherein, the end cover is integrally formed with the second extruded member, or the end cover is integrally formed with the mounting tube, or the end cover is fixedly connected to the mounting tube.

6. The knotter according to claim 5, characterized in that The push-pull assembly includes a connecting rod portion, the connecting rod portion is connected between the ball end and the extrusion end, the connecting rod portion is structured to form a clamping portion, and the clamping portion is close to the extrusion end; The knotter further comprises a cutter, wherein the cutter and the clamping portion are clamped with each other and are limitedly located between the connecting rod portion and the corresponding inner wall of the mounting tube; Wherein, one of the cutter and the clamping part has a boss, and the other of the cutter and the clamping part has a slot, and the boss is adaptively clamped with the slot; And / or, the mounting tube structure is formed with a wire passing hole and a wire passing cavity, the wire passing cavity is connected between the extrusion cavity and the wire passing hole, and the suture passing through the extrusion ring passes through the wire passing cavity and the wire passing hole in sequence 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 a direction from the first end to the second end. When the push-pull assembly is in the first position, the first extrusion member is in the initial position, and the cutter is away from the wire-passing space. When the push-pull assembly is in the second position, the first extrusion member is located at the extrusion position, and the cutter is close to the wire passing space; When the push-pull assembly is in the third position, the first extrusion member is located at the extrusion position, the cutter is located in the thread passing space, and cuts off the suture passing through the thread passing space.

7. The knotter according to claim 5, characterized in that The first extrusion member further comprises a first connecting arm and a first protrusion, wherein the first extrusion portion and the first protrusion are respectively connected to opposite ends of the first connecting arm, the first extrusion portion is close to the second end and faces the second extrusion portion, and the first protrusion is away from the second end and away from the first extrusion portion, and the first connecting arm is rotatably connected to the mounting tube via a rotating shaft, and the rotating shaft is close to the first protrusion; The push-pull assembly includes a connecting rod portion, the connecting rod portion is connected between the extrusion end and the ball end, the extrusion end includes a second protrusion and a second connecting arm, the second connecting arm is connected between the second protrusion and the connecting rod portion, the second protrusion faces the first protrusion, and an avoidance groove facing the first protrusion is formed between the second connecting arm and the connecting rod portion; When the first extrusion member is in the initial position, the second protrusion presses the first protrusion, and the first extrusion member is away from the second extrusion member; when the first extrusion member is in the extrusion position, the second protrusion presses the first connecting arm to rotate along the rotating shaft, so that the first extrusion member is close to the second extrusion member, and the first protrusion is located in the avoidance groove; Wherein, a side of the first connecting arm away from the first extrusion portion gradually tilts upward along a direction from the first end to the second end.

8. The knotter according to claim 7, characterized in that The first extrusion member further comprises a first connecting arm and a third extrusion portion, wherein the first extrusion portion and the third extrusion portion are respectively connected to opposite ends of the first connecting arm, wherein the first extrusion portion is close to the second end and faces the second extrusion portion, and the third extrusion portion is away from the second end, and the first connecting arm is rotatably connected to the mounting tube via a rotating shaft, and the rotating shaft is close to the third extrusion portion; The knotter further comprises a second elastic member, which is connected between the third extrusion portion and the inner wall of the mounting tube and is used to drive the first extrusion member to return from the extrusion position to the initial position; The second elastic member is held between the third extrusion portion and the inner wall of the mounting tube away from the second extrusion member, and is extruded and deformed within an elastic range during the movement of the first extrusion member from the initial position to the extrusion position; Alternatively, the second elastic member is connected between the third extrusion portion and an inner wall of the mounting tube close to the second extrusion member, and is stretched and deformed within an elastic range when the first extrusion member moves from the initial position to the extrusion position.

9. The knotter according to claim 8, characterized in that The second elastic member is a metal spring, and the metal spring is a hollow ring structure; the second connecting arm is arranged through the middle of the metal spring of the ring structure, and the metal spring is held between the inner wall of the mounting tube and the third extrusion portion; Wherein, the metal spring sheet includes a first metal sheet and a second metal sheet, the first metal sheet is an arc-shaped structure with an opening toward the second connecting arm, the second metal sheet is fixedly connected to the inner wall of the mounting tube, and the second metal sheet is an arc-shaped structure with an opening toward the first metal sheet, and the first metal sheet and the second metal sheet are connected to each other to form a hollow ring structure; The first metal sheet is an elastic structure; Or; the second metal sheet is an elastic structure; Alternatively, both the first metal sheet and the second metal sheet are elastic structures.

10. A knotter system, characterized in that: The knotter system comprises the knotter according to any one of claims 1 to 9, and A thread hook, the thread hook comprises a hook and a threading ring, the hook comprises a hook portion and a pulling portion, the pulling portion is connected to one end of the hook portion, the pulling portion passes through an extrusion ring and is sleeved on the threading ring, the threading ring is used for passing a suture, and after removing the threading ring, the part of the suture is passed through the pulling portion; Wherein, the extrusion ring passing through the pulling part is located between the hook part and the threading ring, or the extrusion ring passing through the pulling part is inserted into the hook part; And / or, the outer diameter of the hook portion along the extension direction of the hook portion 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 pulling portion is limited to be located between the hook portion and the threading ring; And / or, the outer wall of the threading ring has a wire groove, and the pulling part is located in the wire groove.

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