Knotters and Systems

Abstract

This application discloses a knot tying device and system. In the knot tying device of this application, by placing a squeezing component inside the mounting tube and near its second end, and placing a push-pull component inside the mounting tube, the squeezing component is squeezed or released via the squeezing end, and a ball end is universally connected to a wrench. Thus, during the process of the wrench driving the push-pull component to squeeze or release the squeezing component, even when the travel distance of the push-pull component relative to the mounting tube is long, the ball end can adapt to the wrench's drive and maintain movement along the axial direction of the mounting tube. Therefore, the portion of the push-pull component extending out of the mounting tube always remains in the axial direction of the mounting tube and will not bend relative to the mounting tube. This allows the push-pull component to move smoothly within the mounting tube along the axial direction of the mounting tube, while reducing the force required to drive the push-pull component, thereby shortening operation time, improving surgical efficiency, and extending the service life of the knot tying device.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a knotter and system. Background Technology

[0002] For surgeries involving suturing, after the tissue is sutured, the locking rings fitted onto the surgical sutures are squeezed by a knotter to make at least part of the inner wall of the locking rings adhere to and clamp the sutures. Then, the excess sutures on the proximal side of the locking rings are cut to complete the surgery.

[0003] A knotter typically consists of an interconnected suture locking unit and an operating unit. The operating unit includes a handle and a wrench for medical personnel to grip. The operating unit controls the push-pull assembly of the suture locking unit to drive the compression assembly within the mounting tube, compressing the locking ring to clamp the suture. However, existing operating units are usually connected to the end of the push-pull assembly extending from the mounting tube via a rotating shaft. During the movement of the operating unit relative to the mounting tube, the wrench rotates along the axis of rotation, resulting in an arc-shaped trajectory rather than a straight line coinciding with the axial direction of the mounting tube. Therefore, when the rotational path is long, the portion of the push-pull assembly extending from the mounting tube connected to the wrench of the operating unit can bend. This prevents the operating unit from driving the push-pull assembly relative to the mounting tube, causing it to fail to compress the locking ring and ultimately preventing the locking ring from locking the suture, leading to surgical failure. Summary of the Invention

[0004] The main objective of this application is to provide a knotter and system to solve the problem in the prior art where the push-pull assembly cannot move axially along the mounting tube, causing the knotter to be damaged and unusable.

[0005] On the one hand, this application provides a knotter that includes a handle;

[0006] The mounting tube has 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, wherein the extrusion assembly is disposed within the mounting tube and near the second end; and

[0008] A wrench and a push-pull assembly are provided. The wrench is rotatably connected to the handle. The push-pull assembly has opposing compression and ball ends. The ball end extends out of the mounting tube and is universally connected to the wrench inside the handle. The compression end is located inside the mounting tube and close to the second end. The wrench rotates relative to the handle under the action of an external force, driving the push-pull assembly to move axially along the mounting tube, thereby driving the compression assembly to compress or release the compression ring.

[0009] Furthermore, 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 end. The operating part extends out of the handle and, under the action of an external force, drives the wrench to rotate along the rotating part, so that the connecting part drives the push-pull assembly to move along the axial direction of the mounting tube.

[0010] The push-pull assembly includes a ball head and a push-pull component. The ball head includes a connecting rod portion and a ball head end. The push-pull component includes a pressing end. The end of the push-pull component away from the pressing end is connected to the end of the connecting rod portion away from the ball head end.

[0011] The connecting part is configured to form a swing groove, a limiting groove and a notch. The notch is connected to the same side of the swing groove and the limiting groove, and is used to allow the ball head end to enter the limiting groove and the connecting rod part to enter the swing groove. The swing groove is connected to the limiting groove, and the swing groove is V-shaped in the direction away from the limiting groove.

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

[0013] The spacing of the connecting ports along the direction perpendicular to the rotation of the handle is smaller than the diameter of the ball end and larger than the diameter of the connecting rod.

[0014] Furthermore, the handle is configured to have a sliding cavity located in the direction of movement of the push-pull assembly away from the squeezing assembly;

[0015] The push-pull assembly includes a push-pull member, a limiting member, and a ball head member. The limiting member is connected between the ball head member and one end of the push-pull member that extends out of the mounting tube, and is slidably limited within the sliding cavity along the movement direction of the push-pull member. The push-pull member is configured to form the extrusion end, and the ball head member is configured to form the ball head end.

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

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

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

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

[0020] And / or, the knotter further includes a first elastic element disposed within the handle and connected between the wrench and the handle, for driving the handle to rotate so as to cause the push-pull assembly to remove the compression on the squeezing assembly;

[0021] Wherein, the first elastic element drives the handle to rotate by pulling force to drive the push-pull assembly to remove the compression on the squeezing assembly. During the process of the wrench rotating relative to the handle to drive the push-pull assembly to squeeze the squeezing assembly, the first elastic element is stretched within the elastic deformation range.

[0022] Alternatively, the first elastic element drives the handle to rotate under pressure, thereby causing the push-pull assembly to remove the pressure on the squeezing assembly. During the process of the wrench rotating relative to the handle and causing the push-pull assembly to squeeze the squeezing assembly, the first elastic element is squeezed 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 being connected between the second tube and the handle, and the outer diameter of the first tube being smaller than the outer diameter of the second tube, the extrusion assembly being disposed inside the second tube, the push-pull assembly being disposed through the first tube, and the extrusion end extending out of the first tube and located inside the second tube, and the ball end extending out of the first tube and located inside the handle.

[0024] Furthermore, the extrusion assembly includes a first extruder and a second extruder. The first extruder is rotatably connected inside the mounting tube and is configured to form a first extrusion section. The second extruder is connected to the mounting tube and is configured to form a second extrusion section. The second extrusion section and the first extrusion section are configured to form an extrusion cavity, which is used to accommodate an extrusion ring.

[0025] Wherein, the first extruder has an initial position and an extrusion position under the drive of the push-pull assembly. When the first extruder is in the initial position, the first extrusion part is away from the second extrusion part, the cavity volume of the extrusion chamber is at its maximum, and the extrusion ring can enter and exit the extrusion chamber. When the first extruder is in the extrusion position, the first extrusion part is close to the second extrusion part, the cavity volume of the extrusion chamber is reduced, the extrusion ring is extruded and the thread passing through is locked.

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

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

[0028] And / or, the knotter further includes an end cap that covers the second end and is configured to form a limiting hole communicating with the extrusion chamber, the limiting hole being used for the body portion of the extrusion ring to pass through and for limiting the flange portion of the extrusion ring;

[0029] The end cap is integrally formed with the second extrusion member, or the end cap is integrally formed with the mounting tube, or the end cap is fixedly connected to the mounting tube.

[0030] Furthermore, the push-pull assembly includes a connecting rod portion, which connects the ball end and the extrusion end, and the connecting rod portion is configured to form a snap-fit ​​portion, which is close to the extrusion end;

[0031] The knotter also includes a cutter, which is engaged with the locking part and confined between the connecting rod part and the inner wall of the corresponding mounting tube;

[0032] The cutter and one of the locking parts have a boss, and the other of the cutter and the locking part have a slot, and the boss and the slot are fitted together in a matching manner.

[0033] And / or, the mounting tube is configured to have a thread hole and a thread cavity, the thread cavity being connected between the extrusion chamber and the thread hole, and a thread passing through the extrusion ring passing through the thread cavity and the thread hole in sequence and extending out of the mounting tube;

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

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

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

[0037] Furthermore, the first extrusion member also includes a first connecting arm and a first protrusion. The first extrusion part and the first protrusion part are respectively connected to 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 protrusion part is away from the second end and faces away from the first extrusion part. The first connecting arm is rotatably connected inside the mounting tube by a rotating shaft, and the rotating shaft is close to the first protrusion part.

[0038] The push-pull assembly includes a connecting rod portion 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 a clearance groove facing the first protrusion is formed between the second connecting arm and the connecting rod portion.

[0039] When the first extruder is in the initial position, the second protrusion presses against the first protrusion, and the first extrusion moves away from the second extrusion; when the first extruder is in the extrusion position, the second protrusion presses against the first connecting arm to rotate along the pivot, so that the first extrusion moves closer to the second extrusion, and the first protrusion is located in the clearance groove.

[0040] The first connecting arm, on the side away from the first extrusion part, gradually tilts upward in the direction from the first end to the second end.

[0041] Furthermore, the first extrusion member also includes a first connecting arm and a third extrusion part. The first extrusion part and the third extrusion part are respectively connected to opposite ends of the first connecting arm. The first extrusion part is close to the second end and faces the second extrusion part, while the third extrusion part is away from the second end. The first connecting arm is rotatably connected inside the mounting tube via a rotating shaft, and the rotating shaft is close to the third extrusion part.

[0042] The knotter further includes a second elastic element, which is connected between the third extrusion part and the inner wall of the mounting tube, for driving the first extrusion part to reset from the extrusion position to the initial position;

[0043] The second elastic member abuts against the third extrusion part and the inner wall of the mounting tube away from the second extrusion member, and is extruded and deformed within the elastic range during the process of the first extrusion member moving from the initial position to the extrusion position;

[0044] Alternatively, the second elastic element is connected between the third extrusion section and the inner wall of the mounting tube near the second extrusion member, and is stretched and deformed within the elastic range during the process of the first extrusion member moving from the initial position to the extrusion position.

[0045] Furthermore, the second elastic element is a metal spring sheet, which is a hollow annular structure; the second connecting arm passes through the middle of the annular metal spring sheet, and the metal spring sheet abuts against the inner wall of the mounting tube and the third extrusion part;

[0046] The metal spring includes a first metal sheet and a second metal sheet. The first metal sheet is an arc-shaped structure with its opening facing the second connecting arm. The second metal sheet is fixedly connected to the inner wall of the mounting tube and is also an arc-shaped structure with its opening facing the first metal sheet. 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 has an elastic structure;

[0048] Alternatively; the second metal sheet has an elastic structure;

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

[0050] On the other hand, this application also provides a knotter system, the knotter system comprising the knotter described in any of the preceding claims, and

[0051] A thread hooker, comprising a hooking member and a threading ring, wherein the hooking member comprises a hook portion and a pulling portion, the pulling portion being connected to one end of the hook portion, the pulling portion passing through a compression ring and being fitted onto the threading ring, the threading ring being used for the thread to pass through, and allowing the portion of the thread to pass through the pulling portion after the threading ring is removed;

[0052] Wherein, the compression ring passing through the pulling part is located between the hook part and the threading ring, or the compression 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 diameter of the limiting hole and larger than the diameter of the extrusion ring, so that the extrusion ring passing through the pulling portion is limited between the hook portion and the threading ring;

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

[0055] In the knot tying device of this application, by placing the compression component inside the mounting tube and near the second end, and placing the push-pull component inside the mounting tube, and by using the compression end to compress or release the compression component, and by extending the ball end from the first end of the mounting tube and universally connecting it to the wrench, the wrench rotates relative to the handle and drives the push-pull component to compress or release the compression component. Even when the travel distance of the push-pull component relative to the mounting tube is long, the ball end can adapt to the drive of the wrench and always remain along the axial direction of the mounting tube. The push-pull assembly moves synchronously with the wrench, so the portion of the push-pull assembly extending out of the mounting tube and connected to the wrench always remains in the axial direction of the mounting tube, preventing it from bending relative to the mounting tube. This avoids damage to the knotter due to bending of the push-pull assembly, thereby extending the service life of the knotter. In addition, it allows the push-pull assembly to move smoothly within the mounting tube along the axial direction of the mounting tube, and reduces the force required for medical personnel to operate the wrench and the force required to drive the squeezing assembly to reset, thereby shortening the operation time and improving surgical efficiency. Attached Figure Description

[0056] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0057] Figure 1 This is a schematic diagram of the knotter in one embodiment of this application.

[0058] Figure 2 This is an exploded view of the suture locking unit in one embodiment of this application.

[0059] Figure 3 This is an exploded view of the operating unit in one embodiment of this application.

[0060] Figure 4 This is a cross-sectional schematic diagram of a knotter in one embodiment of the present application. The figure shows the relative positions of the wrench and handle when the push-pull assembly is in the first position, and partially conceals the stitching locking unit.

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

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

[0063] Figure 7 This is a schematic diagram of the structure of a wrench in one embodiment of this application.

[0064] Figure 8 -A is a cross-sectional schematic diagram of a stitch locking unit in one embodiment of this 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 the stitch locking unit in one embodiment of this application, showing the relative position of the squeezing end and the first squeezing member when the push-pull assembly is in the second position;

[0066] Figure 8 -C is a cross-sectional schematic diagram of the stitch locking unit in one embodiment of this application, showing the relative position of the extrusion end and the first extrusion member when the push-pull assembly is in the third position.

[0067] Figure 9 -A is a cross-sectional schematic diagram of a stitch locking unit in one embodiment of this application. The figure shows the relative position of the extrusion end and the first extrusion member when the push-pull assembly is in the first position. The extrusion ring is not shown in the figure.

[0068] Figure 9 -B is a cross-sectional schematic diagram of the stitch locking unit in one embodiment of this application. The figure shows the relative position of the extrusion end and the first extrusion member when the push-pull assembly is in the first position. The figure shows the extrusion ring in the initial state.

[0069] Figure 9 -C is a cross-sectional schematic diagram of the suture locking unit in one embodiment of this application. The figure shows the relative position of the extrusion end and the first extrusion member when the push-pull assembly is in the second position. The figure shows that the extrusion ring is in the extrusion state and the suture is not cut.

[0070] Figure 9 -D is a cross-sectional schematic diagram of the suture locking unit in one embodiment of this application. The figure shows the relative position of the extrusion end and the first extrusion member when the push-pull assembly is in the third position. The figure shows that the extrusion ring is in the extrusion state and the suture is cut.

[0071] Figure 10 This is a schematic diagram of the push-pull component in one embodiment of this application;

[0072] Figure 11 This is an overall schematic diagram of the knotter system in one embodiment of this application;

[0073] Figure 12 -A is an overall schematic diagram of the hook device in one embodiment of this application;

[0074] Figure 12 -B is a schematic diagram of the connection between the hook and the extrusion ring in one embodiment of this application;

[0075] Figure 13 -A is a schematic diagram of the cooperation of the hook, the extrusion ring, the sewing thread and the sewing thread locking unit in one embodiment of this application, and the thread-threading ring is hidden in the figure;

[0076] Figure 13 -B is a cross-sectional schematic diagram of the engagement of the hook, the compression ring, the sewing thread, and the sewing thread locking unit in one embodiment disclosed in this application.

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

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

[0079] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0080] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0081] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0082] Please see Figure 1-4 and Figure 11 As shown, this application provides a knotter 100. The knotter 100 includes a thread 300 locking unit and an operating unit. The thread 300 locking unit includes an installation tube 20, a compression assembly 30, and a push-pull assembly 50; the operating 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 squeezing assembly 30 is disposed inside 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 inside the mounting tube 20 and extends out of the mounting tube 20 from the first end 211 and is connected to the wrench 40.

[0084] Further, please refer to Figure 2-4As shown, the push-pull assembly 50 has a pressing 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 inside the handle 10. The pressing end 521 is located inside the mounting tube 20 and close to the second end 221. Under the action of external force, the wrench 40 rotates relative to the handle 10 and drives the push-pull assembly 50 to move axially along the mounting tube 20, thereby driving the pressing assembly 30 to press or release the pressing ring 200.

[0085] Through the universal joint between the push-pull assembly 50 and the wrench 40, even when the travel distance of the push-pull assembly 50 relative to the mounting tube 20 is long, the ball end 511 can adapt to the drive of the wrench 40 and always maintain its axial movement relative to the mounting tube 20. Therefore, the portion 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 preventing the knotter 100 from being bent due to the push-pull assembly. The buckling mechanism 100 is not damaged by bending, thus extending its service life. In addition, it allows the push-pull assembly 50 to move smoothly relative to the mounting tube 20, thereby reducing the force applied to the wrench 40 to drive the push-pull assembly 50 and reducing the force required to reset the push-pull assembly 50. This also effectively improves the service life of the wrench 40, the push-pull assembly 50, and the mounting tube 20, thereby improving the service life of the knotter 100 and ensuring the accuracy of the knotter 100 during repeated use.

[0086] Please see Figure 3-4 As shown, one end of the mounting tube 20 extends into the handle 10 and is threadedly connected to the fixing member 60. The handle 10 is also provided with a limiting cavity 11, and the fixing member 60 is disposed in the limiting cavity 11. Thus, the fixed connection between the mounting tube 20 and the handle 10 is achieved by limiting and snapping the fixing member 60 into the limiting cavity 11.

[0087] Further, please refer to Figure 4-7 As shown, the wrench 40 includes a connecting part 41, a rotating part 42, and an operating part 43. The rotating part 42 is rotatably connected to the handle 10 via a rotating shaft 44 and is located between the connecting part 41 and the operating part 43. The connecting part 41 is universally connected to the ball joint 51. The operating part 43 extends out of the handle 10 and, under the action of an external force, drives the wrench 40 to rotate along the rotating part 42, so that the connecting part 41 drives the push-pull assembly 50 to move axially along the mounting tube 20.

[0088] The operating part 43 can be used in conjunction with the handle 10 for medical personnel to hold and move or release the operating part 43 so that the wrench 40 rotates relative to the handle 10.

[0089] Further, please refer to Figure 3-6 As shown, the push-pull assembly 50 includes a ball joint 51 and a push-pull member 52 connected to each other along the axial direction of the mounting tube 20. The ball joint 51 forms a ball end 511 and a connecting rod portion 512. The opposite ends of the connecting rod portion 512 are respectively connected between the ball end 511 and one 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 joint 51 to maintain movement along the axial direction of the mounting tube 20.

[0090] Further, please refer to Figure 4-7 As shown, the connecting portion 41 is constructed with a swing groove 411, a limiting groove 412, and a notch 413. The notch 413 connects to the same side of the swing groove 411 and the limiting groove 412, and is used to allow the ball end 511 to enter the limiting groove 412 and the connecting rod portion 512 to enter the swing groove 411, so as to facilitate the assembly of the ball end 51 onto the connecting portion 41.

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

[0092] Furthermore, the connecting port 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 can connect with the ball end 511 located in the limiting groove 412. At the same time, the connecting port also restricts the ball end 511 from entering the swing groove 411 from the limiting groove 412, so that the push-pull assembly 50 can be limited and connected to the wrench 40 through the ball end 511 of the ball member 51. When the wrench 40 rotates, it can drive the push-pull assembly 50 to move along the axial direction of the mounting tube 20 to squeeze the squeezing assembly 30 or remove the squeezing of the squeezing assembly 30.

[0093] Furthermore, the spacing of the communication openings 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 connecting rod portion 512, thereby allowing the ball end 511 to be movably confined within the limiting groove 412 and the connecting rod portion 512 to be movably confined within the swing groove 411.

[0094] By setting the V-shaped swing groove 411 and the limiting groove 412, the ball head 51 and the push-pull member 52 are kept in the axial direction of the mounting tube 20 during the process of the ball head 51 being pushed or pulled by the wrench 40 to drive the push-pull member 52 to move relative to the mounting tube 20. This avoids the end of the push-pull assembly 50 extending out of the mounting tube 20 and close to the wrench 40 being deflected axially relative to the mounting tube 20 under the drive of the wrench 40. This would prevent the push-pull assembly 50 from being squeezed and limited between itself and the inner wall of the mounting tube 20 at the position where it extends out of the mounting tube 20, causing the movement of the push-pull assembly 50 relative to the mounting tube 20 to be less smooth, increasing the resistance to driving the movement of the push-pull assembly 50, and causing irreversible deformation of the mounting tube 20 and the push-pull assembly 50, thus affecting the accuracy of the knotter 100.

[0095] Further, please refer to Figure 3-6 As shown, the handle 10 is configured to form a sliding cavity 12, which is located in the direction of movement of the push-pull assembly 50 away from the squeezing assembly 30, and is located between the first end 211 and the wrench 40.

[0096] The push-pull assembly 50 further includes a limiting member 53, which is connected between the ball head member 51 and the end of the push-pull member 52 that extends out of the mounting tube 20, and is slidably limited within the sliding cavity 12 along the axial direction of the mounting tube 20; thereby enabling the push-pull member 52 to be connected to the ball head member 51, and allowing the push-pull assembly 50 to slide within the sliding cavity 12 along the axial direction of the mounting tube 20 via the limiting member 53, 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 squeeze or release the compression assembly 30.

[0097] Furthermore, the limiting member 53, the push-pull member 52, and the ball-end member 51 are detachably connected to facilitate the assembly of the ball-end member 51 with the handle 10. Alternatively, the limiting member 53, the push-pull member 52, and the ball-end member 51 are integrally formed to improve the structural strength between the limiting member 53, the push-pull member 52, and the ball-end 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-end member 51 to improve the structural strength between the limiting member 53 and the push-pull member 52, and to facilitate the assembly of the ball-end member 51 with the handle 10 and simplify the assembly steps. Alternatively, the limiting member 53 and the ball-end member 51 are integrally formed, and the limiting member 53 and / or the ball-end member 51 are detachably connected to the push-pull member 52 to simplify the assembly steps.

[0098] Further, please refer to Figure 3-6 As shown, the knotter 100 includes a first elastic element 91. The first elastic element 91 is disposed inside the handle 10 and connected between the wrench 40 and the handle 10, for driving the handle 10 to rotate so as to drive the push-pull assembly 50 to remove the compression on the squeezing assembly 30.

[0099] In the embodiments of this application, the first elastic element 91 drives the handle 10 to rotate by pulling force to drive the push-pull assembly 50 to remove the compression on the compression assembly 30. During the process of the wrench 40 rotating relative to the handle 10 to drive the push-pull assembly 50 to compress the compression assembly 30, the first elastic element 91 is stretched within the elastic deformation range.

[0100] Furthermore, the first elastic element 91 can be a tension spring, elastic rope, elastic band, or other elastic element that is elastically stretched and can return to its original position after being subjected to tension.

[0101] Further, please refer to Figure 4-7 As shown, the wrench 40 also has a connecting hole 414 on the connecting part 41, the handle 10 has a connecting post 13, the elastic element is connected between the connecting hole 414 and the connecting post 13, and during 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 element 91 is stretched within its elastic deformation range, and when the external force applied to the wrench 40 is removed, the first elastic element 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.

[0102] In the embodiments of this application, the first elastic element 91 can also drive the handle 10 to rotate by pressure to drive the push-pull assembly 50 to remove the compression on the squeezing assembly 30. During the process of the wrench 40 rotating relative to the handle 10 to drive the push-pull assembly 50 to squeeze the squeezing assembly 30, the first elastic element 91 is squeezed within the elastic deformation range.

[0103] Furthermore, the first elastic element 91 can be an elastic element such as a metal sheet, a silicone sheet, or a compression spring that is elastically compressed and can be reset after being subjected to compressive force.

[0104] Furthermore, the first elastic member 91 can abut against the connecting portion 41 and the end of the handle 10 near the limiting member 53, or it can abut against the grip portion and the end of the handle 10 away from the limiting member 53, or it can be sleeved on the connecting rod portion 512 and abut against the limiting member 53 and the connecting portion 41, or it can be sleeved on the push-pull member 52 and abut against the first end 211 and the limiting member 53. During 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 compressed within its elastic deformation range. 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 compressive force on the compression assembly 30.

[0105] In the case where the first elastic member 91 is sleeved on the connecting rod portion 512 and abuts against the limiting member 53 and the connecting portion 41, or sleeved on the push-pull member 52 and abuts against the first end 211 and the limiting member 53, the direction of elastic deformation of the first elastic member 91 can be in the same direction as the axial direction of the mounting tube 20, thereby reducing the force required to squeeze the first elastic member 91 and making full use of the deformation force released by the reset of the squeezed first elastic member 91.

[0106] Further, please refer to Figure 1 As shown, in the embodiments of this application, the mounting tube 20 is an integral structure, and the outer diameter of the mounting tube 20 along the direction 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] Please see Figure 2 , 8As shown in the embodiments of this application, the mounting tube 20 can also be a split structure, including 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 disposed inside the second tube 22, the push-pull assembly 50 passes through the first tube 21, and the extrusion end 521 extends out of the first tube 21 and is located inside the second tube 22, and the ball end 511 extends out of the first tube 21 and is located inside 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 first tube 21 and the second tube 22 are connected by a connector 23. The second tube 22 is nested outside the connector 23 and smoothly connects 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 to an annular slope, so that the connector 23 can avoid scratching the patient's tissue when the knotter 100 is withdrawn from the patient's body.

[0110] Further, please refer to Figure 2 , 8 As shown in Figure 9, the extrusion assembly 30 includes a first extruder 31 and a second extruder 32. The first extruder 31 is rotatably connected within the mounting tube 20 and is configured to form a first extrusion portion 311. The second extruder 32 is connected to the mounting tube 20 and is configured to form a second extrusion portion 321. The second extrusion portion 321 and the first extrusion portion 311 together form an extrusion cavity 33, which is used to accommodate an extrusion ring 200. The first extruder 31 rotates to move the first extrusion portion 311 closer to the second extrusion portion 321 to extrude the extrusion ring 200 located in the extrusion cavity 33; or, the first extruder 31 rotates to move 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] Furthermore, please refer to Figure 9As shown in -B and 9-C, the compression ring 200 has an initial state and a compression state. When the compression ring 200 is in the initial state, the suture 300 can enter and exit the compression ring 200 and move relative to the compression ring 200; when the compression ring 200 is in the compression state, the suture 300 passing through the compression ring 200 is clamped by the compression ring 200 and cannot move relative to the compression ring 200.

[0112] The first extrusion member 31 has an initial position and a compression position under the drive of the push-pull assembly 50. When the first extrusion member 31 is in the initial position, the first extrusion part 311 is away from the second extrusion part 321. At this time, the cavity volume of the compression chamber 33 is at its maximum, and the extrusion ring 200 in the initial state or the compression state can freely enter and exit the compression chamber 33. When the first extrusion member 31 is in the compression position, the first extrusion part 311 is close to the second extrusion part 321, and the cavity volume of the compression chamber 33 is reduced. At this time, the extrusion ring 200 is compressed and the thread 300 passing through it is locked.

[0113] By setting only the first extruder 31 to rotate and move closer to or further away from the second extruder 32, the extrusion assembly 30 can have higher precision and is easier to control in performing 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, thereby enabling the first extrusion member 31 to always maintain its original external shape under the drive of the push-pull assembly 50, and cooperate with the second extrusion member 32 to effectively and accurately extrude the extrusion ring 200.

[0115] Furthermore, the first extrusion part 311 protrudes into the second extrusion part 321 in a toothed shape, and the second extrusion part 321 is grooved and corresponds to the first extrusion part 311. When the first extrusion part 31 is in the extrusion position, the extrusion ring 200 is in the extrusion state and is extruded into a V-shape. This can shorten the overall length of the extrusion ring 200, thereby facilitating the control of the amount and volume of implants such as the extrusion ring 200 and sutures 300, increasing the efficiency of wound healing for patients, and shortening the postoperative recovery time for patients.

[0116] Further, please refer to 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. The mounting tube 20 is constructed with a fitting portion 222 corresponding to the second extrusion portion 321, and the fitting portion 222 is fitted and connected to the second extrusion portion 321. This allows the second extrusion portion 321 and the mounting tube 20 to be mutually positioned along the axial direction of the mounting tube 20 and fixedly connected by welding or bonding. The outer side of the second extrusion portion 321 can fill the gap in the fitting portion 222, thereby effectively controlling the length of the mounting tube 20.

[0117] Alternatively, the second extruder 32 may be integrally formed with the mounting tube 20, thereby increasing the structural strength between the second extruder 32 and the mounting tube 20. This facilitates effective and precise extrusion of the extrusion ring 200 in conjunction with the first extruder 31, simplifies assembly steps, and improves assembly efficiency.

[0118] Further, please refer to Figure 2 , 8 As shown in Figure 9, the knotter 100 also includes an end cap 34. The end cap 34 covers the second end 221 and is configured to form a limiting hole 341 communicating with the extrusion chamber 33.

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

[0120] The limiting hole 341 is used for the main body portion 210 of the compression ring 200 to pass through and for limiting the flange portion 220 of the compression ring 200, so that the compression ring 200 can be inserted into a designated position in the compression cavity 33, so as to accurately compress the compression ring 200, so that the compression ring 200 compressed to the compressed state can effectively lock the passing sewing thread 300.

[0121] Furthermore, 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 good structural strength, simplify the assembly steps and improve assembly efficiency, and ensure the fitting 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 can be smoothly connected, avoiding the mounting tube 20 from scratching the patient's tissue when entering and exiting the patient's body, and so that the end cap 34 and the mounting tube 20 have good structural strength, simplify the assembly steps and improve assembly efficiency; or, the end cap 34 is fixedly connected to the mounting tube 20, and is fixedly connected to the end cap 34 by means of 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] Further, please refer to Figure 2 , 10 As shown, the push-pull component 52 includes a connecting rod portion 522. The connecting rod portion 522 is connected between the ball end 511 and the pressing end 521, wherein the connecting rod portion 522 is inserted into the first tube 21 at least to fit the inner wall of 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 configured with a snap-fit ​​portion 523, which is located near the extrusion end 521. The knotter 100 also includes a cutter 80, which snaps into the snap-fit ​​portion 523 and is positioned between the connecting rod portion 522 and the inner wall of the corresponding mounting tube 20. The cutter 80 moves synchronously with the push-pull member 52 and cuts off the excess stitching 300 extending from the extrusion ring 200 when the extrusion ring 200 is in the extrusion state.

[0124] The cutter 80 and one of the latching parts 523 have a boss 5231, and the other of the cutter 80 and the latching part 523 have a slot 81. The boss 5231 and the slot 81 are fitted together.

[0125] Furthermore, the engaging portion 523 includes adjacent first limiting surface 5232 and second limiting surface 5233. The first limiting surface 5232 is away from the extrusion end 521, and the second limiting surface 5233 faces the extrusion end 521. The boss 5231 is provided on the first limiting surface 5232. The cutter 80 has the slot 81, which is engaged with the boss 5231. The end of the cutter 80 away from its blade is engaged with the second limiting surface 5233. The facets 5233 abut against each other, and the side near the protrusion 5231 abuts against the first limiting facet 5232, while the side away from the first limiting facet 5232 is limited and abutted against the inner wall of the mounting tube 20. This allows the cutter 80 to be limited and engaged between the engaging part 523 and the corresponding inner wall of the mounting tube 20. The limited engagement of the cutter 80 can be achieved without setting a fixing structure, which is convenient for assembling the cutter 80 or replacing the cutter 80.

[0126] Further, please refer to Figure 8-9 As shown, the mounting tube 20 is configured to have a thread hole 24 and a thread cavity 25. The thread cavity 25 connects the extrusion chamber 33 and the thread hole 24, and the sewing thread 300 passing through the extrusion ring 200 passes through the thread cavity 25 and the thread hole 24 in sequence and extends out of the mounting tube 20.

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

[0128] Please see Figure 4 , 8 As shown in -A, when the push-pull assembly 50 is in the first position, the first extruder 31 is in the initial position, the cutter 80 is away from the line space, and the extrusion ring 200 in the initial state can freely enter and exit the extrusion chamber 33 through the limiting hole 341.

[0129] Please see Figure 5 , 8 As shown in -B, when the push-pull assembly 50 is in the second position, the first extruder 31 is located in the extrusion position, the first extrusion part 311 is close to the second extrusion part 321, and extrudes the extrusion ring 200 located in the extrusion chamber 33 to the extrusion state. The extrusion ring 200 in the extrusion state clamps the thread 300 that passes through. At this time, the cutter 80 is close to the thread passage space.

[0130] Please see Figure 6 , 8As shown in -C, when the push-pull assembly 50 is in the third position, the first extruder 31 is located in the extrusion position, the first extrusion part 311 is close to the second extrusion part 321, and the extrusion chamber 33 clamps the extrusion ring 200 in the extrusion state. At this time, the cutter 80 is located in the thread passage space and cuts the suture 300 passing through the thread passage 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 squeezing member 31 moves away from the second squeezing member 32, so that the squeezing assembly 30 no longer clamps the squeezing ring 200 in the squeezing state, thereby allowing the squeezing ring 200 in the squeezing state to smoothly exit the squeezing cavity 33 from the limiting hole 341 and be implanted into the patient's body.

[0132] Further, please refer to Figure 9 As shown in the embodiment of this application, the first extrusion member 31 further includes a first connecting arm 312 and a first protrusion 313. The first extrusion portion 311 and the first protrusion 313 are respectively connected to opposite ends of the first connecting arm 312. Specifically, the first extrusion portion 311 is close to and faces the second end 221, while the first protrusion 313 is away from the second end 221 and away from the first extrusion portion 311, such that the first extrusion portion 311 and the first protrusion 313 are located on opposite sides of the first connecting arm 312 and are far apart from each other, with opposite protrusion directions. The first connecting arm 312 is rotatably connected inside 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 long lever arm between the first extrusion part 311 and the rotating shaft 70, so that the force required to be applied to the first connecting arm 312 by the push-pull assembly 50 during the process of driving the first extrusion part 31 from the first position to the second position and the third position is small, and it is easier for medical staff to 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. No limitation is made here.

[0134] Furthermore, the extrusion end 521 includes a second protrusion 5211 and a second connecting arm 5212. 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 such that the second protrusion 5211 and the first protrusion 313 face each other, and a clearance 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 presses the first protrusion 313 to make the first extrusion member 31 rotate relative to the rotating shaft 70, thereby making the first extrusion part 311 move away from the second extrusion part 321, and thus realizing the first extrusion member 31 returning from the extrusion position to the initial position, or the first extrusion member 31 remaining in the initial position.

[0137] When the first extrusion member 31 is in 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 member 311 moves closer to the second extrusion member 321. The first protrusion 313 is located in the relief groove 524, so that the push-pull assembly 50 can extrude the first connecting arm 312 away from the first extrusion member 311 through the first protrusion 313, thereby making the first extrusion member 311 cooperate with the second extrusion member 321 to clamp the extrusion ring 200 located in the extrusion cavity 33.

[0138] Compared to setting an elastic structural member to drive the first extruder 31 to reset from the extrusion position to the initial position, this embodiment eliminates the need for an elastic structural member, making the structure of the knotter 100 simpler, reducing assembly steps and improving assembly efficiency.

[0139] Furthermore, the side of the first connecting arm 312 away from the first extrusion part 311 gradually tilts upward in 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 part 311 is an inclined surface. 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 and drives the first extrusion part 311 to move closer to the second extrusion part 321. This can effectively extend the stroke of the first extrusion member 31 in contact with and be extruded by the push-pull assembly 50, thereby ensuring that the force applied to the push-pull assembly 50 is applied to the first extrusion member 31 smoothly.

[0140] Furthermore, in the embodiments of this application, please refer to Figure 2 , 8 As shown, the first extrusion member 31 further includes a first connecting arm 312 and a third extrusion part 314. The first extrusion part 311 and the third extrusion part 314 are respectively connected to opposite ends of the first connecting arm 312. The first extrusion part 311 is close to the second end 221 and faces the second extrusion part 321, while the third extrusion part 314 is away from the second end 221. 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 third extrusion part 314, so that the first connecting arm 312 has a long lever arm between the first extrusion part 311 and the rotating shaft 70. This makes it easier for medical personnel to operate more smoothly and conveniently, as the push-pull assembly 50 needs to apply less force to the first connecting arm 312 during the process of driving the first extrusion member 31 from the first position to the second position and the third position.

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

[0142] The second elastic member 92 is held between the third extrusion part 314 and the inner wall of the mounting tube 20 away from the second extrusion member 32, and is compressed and deformed within the elastic range during the process of the first extrusion member 31 moving from the initial position to the extrusion position.

[0143] Furthermore, the second elastic member 92 abuts against the third pressing part 314 and the inner wall of the mounting tube 20 in a direction that is perpendicular to both the axial direction of the mounting tube 20 and the rotation axis 71 of the rotating shaft 70. As the first pressing part 311 approaches the second pressing part 321, the third pressing part 314 presses the second elastic member 92 in the opposite direction, so that the second elastic member 92 elastically deforms within its elastic range.

[0144] Furthermore, the second elastic element 92 can be a metal spring sheet, which is a hollow annular structure, such as elliptical or circular, and is not limited here. The second connecting arm 5212 passes through the middle of the annular metal spring sheet, and the metal spring sheet abuts against the inner wall of the mounting tube 20 and the third pressing part 314.

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

[0146] 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.

[0147] Alternatively, the second elastic member 92 is connected between the third extrusion part 314 and the inner wall of the mounting tube 20 near the second extrusion member 32, and is stretched and deformed within the elastic range during the process of the first extrusion member 31 moving from the initial position to the extrusion position.

[0148] Furthermore, the second elastic member 92 abuts against the third pressing part 314 and the inner wall of the mounting tube 20 in a direction that is perpendicular to both the axial direction of the mounting tube 20 and the rotation axis 71 of the rotating shaft 70. As the first pressing part 311 approaches the second pressing part 321, the third pressing part 314 stretches the second elastic member 92 in the opposite direction, so that the second elastic member 92 elastically deforms within its elastic range.

[0149] Furthermore, the second elastic element 92 can be an elastic structure such as a tension spring, elastic rope, or elastic band that is elastically stretched and can return to its original position after being subjected to tension. No further limitations are specified here.

[0150] Please see Figure 11-13As shown, on the other hand, this application also provides a knotter system 1000, which includes the knotter 100 described in any of the above claims. Therefore, the knotter system 1000 has all the aforementioned beneficial effects, which will not be repeated here.

[0151] Furthermore, 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 compression ring 200 in the compression chamber 33, and to pass the suture 300 protruding from the suture tissue through the compression ring 200 and out of the knotter 100 from the thread hole 24.

[0152] Furthermore, the hook device 400 includes a hook member 410 and a thread loop 420. The hook 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 compression ring 200 and is sleeved on the thread loop 420. The thread loop 420 is used for the thread 300 to pass through, and after the thread loop 420 is removed, the portion of the thread 300 passes through the pulling portion 4102.

[0153] The outer diameter of the hook portion 4101 along its extending direction is smaller than the diameter of the limiting hole 341 and larger than the diameter of the compression ring 200, so that the compression ring 200 passing through the pulling portion 4102 is limited between the hook portion 4101 and the threading ring 420; or, the compression ring 200 passing through the pulling portion 4102 is inserted into the hook portion 4101, so that the compression ring 200 can be pre-positioned and connected. The hook portion 4101 is located near the pulling portion 4102 to facilitate the pre-assembly of the extrusion ring 200 onto the hook device 400. The end of the hook portion 4101 away from the pulling portion 4102 passes sequentially through the limiting hole 341, the extrusion cavity 33, the thread passage cavity 25, and the thread passage hole 24, so that the main body portion 210 of the extrusion ring 200 is assembled into the extrusion cavity 33 and the flange portion 220 is limited by the limiting hole 341. The hole 341 is located away from the squeezing chamber 33, allowing the squeezing ring 200 to be quickly and efficiently and accurately assembled onto the knotter 100 via the hook 400. Simultaneously, the threading ring 420 can limit the squeezing ring 200, preventing it from falling off, and also supports the pulling part 4102, allowing the suture 300 extending from the suture tissue to first pass through the threading ring 420. After removing the threading ring 420, it passes through the rope-like pulling part 4102. Furthermore, during the process of pulling the hook part 4101 away from the knotter 100, the suture 300 passing through the pulling part 4102, along with the pulling part 4102, sequentially passes through the squeezing ring 200, the thread passage chamber 25, and the thread passage hole 24 before extending out of the knotter 100, thus achieving the threading action of the suture 300 passing through the squeezing ring 200.

[0154] The pulling part 4102 is a rope-like structure that is easy to bend, has sufficient strength, and is clean, such as cotton rope or steel wire rope, so as to pass through the compression ring 200 and be sleeved on the threading ring 420, and to facilitate the removal of the threading ring 420 and the sequential passing through the compression ring 200, the thread cavity 25 and the thread hole 24.

[0155] Further, please refer to Figure 12-13 As shown, the outer wall of the threading ring 420 has a wire groove 4201, and the pulling part 4102 is located in the wire groove 4201 so that the pulling part 4102 can be stably sleeved on the threading ring 420.

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

[0157] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0158] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A knotter, characterized in that, include: handle; The mounting tube has 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 is disposed inside the mounting tube and near the second end; as well as A wrench and a push-pull assembly, wherein the wrench is rotatably connected to the handle, and the push-pull assembly has opposing compression ends and ball ends, the ball ends extending out of the mounting tube and universally connected to the wrench inside the handle, the compression ends being located inside the mounting tube and close to the second end, the wrench rotating relative to the handle under the action of an external force, and driving the push-pull assembly to move axially along the mounting tube, so as to drive the compression assembly to compress or release the compression ring; The push-pull assembly includes a ball head, which includes a connecting rod and a ball head end. The wrench is configured to have a swing groove, a limiting groove, and a notch. The notch is connected to the same side of the swing groove and the limiting groove, and is used to allow the ball head end to enter the limiting groove and the connecting rod to enter the swing groove. The swing groove is connected to the limiting groove.

2. The knotter according to claim 1, characterized in that, 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 end. The operating part extends out of the handle and, under the action of an external force, drives the wrench to rotate along the rotating part, so that the connecting part drives the push-pull assembly to move along the axial direction of the mounting tube. The push-pull assembly further includes a push-pull member, which includes the extrusion end. The end of the push-pull member away from the extrusion end is connected to the end of the connecting rod away from the ball end. The connecting portion is configured to form the swing groove, the limiting groove and the notch, and the swing groove is V-shaped in the direction away from the limiting groove.

3. The knotter according to claim 2, characterized in that, The opening between the swing groove and the limiting groove allows the connecting rod to pass through, and restricts the ball end from entering the swing groove from the limiting groove. The spacing of the connecting ports along the direction perpendicular to the rotation of the handle is smaller than the diameter of the ball end and larger than the diameter of the connecting rod.

4. The knotter according to claim 1, characterized in that, The handle is configured to form a sliding cavity, which is located in the direction of movement of the push-pull assembly away from the squeezing assembly; The push-pull assembly includes a push-pull member and a limiting member. The limiting member is connected between the ball head member and one end of the push-pull member that extends out of the mounting tube, and is slidably limited within the sliding cavity along the movement direction of the push-pull member. The push-pull member is configured to form the extrusion end, and the ball head member is configured to form the ball head end. The limiting member, the push-pull member, and the ball head member are detachably connected; Alternatively, the limiting member, the push-pull member, and the ball head member are integrally formed; Alternatively, the limiting member is integrally formed with the push-pull member, and the ball head member is detachably connected to the push-pull member and / or the limiting member; Alternatively, the limiting member is integrally formed with the ball head member, and the push-pull member is detachably connected to the ball head member and / or the limiting member; And / or, the knotter further includes a first elastic element disposed within the handle and connected between the wrench and the handle, for driving the handle to rotate so as to cause the push-pull assembly to remove the compression on the squeezing assembly; Wherein, the first elastic element drives the handle to rotate by pulling force to drive the push-pull assembly to remove the compression on the squeezing assembly. During the process of the wrench rotating relative to the handle to drive the push-pull assembly to squeeze the squeezing assembly, the first elastic element is stretched within the elastic deformation range. Alternatively, the first elastic element drives the handle to rotate under pressure, thereby causing the push-pull assembly to remove the pressure on the squeezing assembly. During the process of the wrench rotating relative to the handle and causing the push-pull assembly to squeeze the squeezing assembly, the first elastic element is squeezed within the elastic deformation range. And / or, the mounting tube includes a first tube and a second tube that are interconnected, the first tube being connected between the second tube and the handle, and the outer diameter of the first tube being smaller than the outer diameter of the second tube, the extrusion assembly being disposed inside the second tube, the push-pull assembly being disposed through the first tube, and the extrusion end extending out of the first tube and located inside the second tube, and the ball end extending out of the first tube and located inside the handle.

5. The knotter according to any one of claims 1-4, characterized in that, The extrusion assembly includes a first extruder and a second extruder. The first extruder is rotatably connected inside the mounting tube and is configured to form a first extrusion section. The second extruder is connected to the mounting tube and is configured to form a second extrusion section. The second extrusion section and the first extrusion section are configured to form an extrusion cavity, which is used to accommodate an extrusion ring. Wherein, the first extruder has an initial position and an extrusion position under the drive of the push-pull assembly. When the first extruder is in the initial position, the first extrusion part is away from the second extrusion part, the cavity volume of the extrusion chamber is at its maximum, and the extrusion ring can enter and exit the extrusion chamber. When the first extruder is in the extrusion position, the first extrusion part is close to the second extrusion part, the cavity volume of the extrusion chamber is reduced, the extrusion ring is extruded and the thread passing through is locked. And / or, the first extrusion member is made of a rigid structural member; And / or, the second extrusion member is fixedly connected to the mounting tube, or the second extrusion member is integrally formed with the mounting tube; And / or, the knotter further includes an end cap that covers the second end and is configured to form a limiting hole communicating with the extrusion chamber, the limiting hole being used for the body portion of the extrusion ring to pass through and for limiting the flange portion of the extrusion ring; The end cap is integrally formed with the second extrusion member, or the end cap is integrally formed with the mounting tube, or the end cap 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, which is connected between the ball end and the extrusion end. The connecting rod portion is configured to have a snap-fit ​​portion, which is close to the extrusion end. The knotter also includes a cutter, which is engaged with the locking part and confined between the connecting rod part and the inner wall of the corresponding mounting tube; The cutter and one of the locking parts have a boss, and the other of the cutter and the locking part have a slot, and the boss and the slot are fitted together in a matching manner. And / or, the mounting tube is configured to have a thread hole and a thread cavity, the thread cavity being connected between the extrusion chamber and the thread hole, and a thread passing through the extrusion ring passing through the thread cavity and the thread hole in sequence and extending 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 from the first end to the second end. When the push-pull assembly is in the first position, the first extruder is located in the initial position, and the cutter is away from the line space. When the push-pull assembly is in the second position, the first extruder is located in the extrusion position, and the cutter is close to the wire passage space; When the push-pull assembly is in the third position, the first extruder is located in the extrusion position, the cutter is located in the thread passage space, and cuts the thread passing through the thread passage space.

7. The knotter according to claim 5, characterized in that, The first extrusion member further includes a first connecting arm and a first protrusion. The first extrusion part and the first protrusion part are respectively connected to 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 protrusion part is away from the second end and faces away from the first extrusion part. The first connecting arm is rotatably connected inside the mounting tube by a rotating shaft, and the rotating shaft is close to the first protrusion part. The push-pull assembly includes a connecting rod portion 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 a clearance groove facing the first protrusion is formed between the second connecting arm and the connecting rod portion. When the first extruder is in the initial position, the second protrusion presses against the first protrusion, and the first extrusion moves away from the second extrusion; when the first extruder is in the extrusion position, the second protrusion presses against the first connecting arm to rotate along the pivot, so that the first extrusion moves closer to the second extrusion, and the first protrusion is located in the clearance groove. The first connecting arm, on the side away from the first extrusion part, gradually tilts upward in the direction from the first end to the second end.

8. The knotter according to claim 7, characterized in that, The first extrusion member further includes a first connecting arm and a third extrusion part. The first extrusion part and the third extrusion part are respectively connected to opposite ends of the first connecting arm. The first extrusion part is close to the second end and faces the second extrusion part, while the third extrusion part is away from the second end. The first connecting arm is rotatably connected inside the mounting tube via a rotating shaft, and the rotating shaft is close to the third extrusion part. The knotter further includes a second elastic element, which is connected between the third extrusion part and the inner wall of the mounting tube, for driving the first extrusion part to reset from the extrusion position to the initial position; The second elastic member abuts against the third extrusion part and the inner wall of the mounting tube away from the second extrusion member, and is extruded and deformed within the elastic range during the process of the first extrusion member moving from the initial position to the extrusion position; Alternatively, the second elastic element is connected between the third extrusion section and the inner wall of the mounting tube near the second extrusion member, and is stretched and deformed within the elastic range during the process of the first extrusion member moving from the initial position to the extrusion position.

9. The knotter according to claim 8, characterized in that, The second elastic element is a metal spring sheet, which is a hollow annular structure; the second connecting arm passes through the middle of the metal spring sheet in the annular structure, and the metal spring sheet abuts against the inner wall of the mounting tube and the third extrusion part; The metal spring includes a first metal sheet and a second metal sheet. The first metal sheet is an arc-shaped structure with its opening facing the second connecting arm. The second metal sheet is fixedly connected to the inner wall of the mounting tube and is also an arc-shaped structure with its opening facing the first metal sheet. The first metal sheet and the second metal sheet are connected to each other to form a hollow ring structure. The first metal sheet has an elastic structure; Alternatively; the second metal sheet has an elastic structure; Alternatively, both the first metal sheet and the second metal sheet may be elastic structures.

10. A knotter system, characterized in that, The knotter system includes the knotter according to any one of claims 1-9, and A thread hooker, comprising a hooking member and a threading ring, wherein the hooking member comprises a hook portion and a pulling portion, the pulling portion being connected to one end of the hook portion, the pulling portion passing through a compression ring and being sleeved on the threading ring, the threading ring being used for the thread to pass through, and allowing the thread to pass through the pulling portion after the threading ring is removed; Wherein, the compression ring passing through the pulling part is located between the hook part and the threading ring, or the compression ring passing through the pulling part is inserted into the hook part; And / or, the outer wall of the threading ring has a groove, and the pulling part is located in the groove.

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