Thread locking unit, knotter and system

Abstract

This application discloses a suture locking unit, a knotter, and a system. In the suture locking unit, a rigid first compression arm is rotatably connected to the mounting tube along a rotation axis perpendicular to the axial direction of the mounting tube. This provides the first compression arm with good structural strength, making it less prone to deformation and maintaining accuracy even after repeated use. An elastic second compression arm is connected to the first compression arm near the rotation axis. The second compression arm extends a certain distance away from the first direction and then crosses the rotation axis in the opposite direction, thus lengthening the second compression arm. Only a small elastic deformation occurs in the second compression arm, preventing irreversible elastic deformation. This facilitates the reset of the second compression arm, which in turn resets the first compression arm. Consequently, the compression element can be reused to effectively compress different locking rings, ensuring that the compressed locking ring effectively locks the passing suture, preventing surgical failure due to suture detachment from the locking ring.

Description

Technical Field

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

[0002] For surgeries involving suturing, after the tissue is sutured, the suture needs to be knotted. In the prior art, a knotting device is used to squeeze the locking ring fitted on the surgical suture, so that at least part of the inner wall of the locking ring adheres to and clamps the suture. Then, the excess suture on the proximal side of the locking ring is cut off, thereby completing the surgery.

[0003] Knotters are typically intended for reuse, but after a single use in surgery, the compression structure of existing knotters undergoes irreversible deformation, making them unable to reposition. This irreversible deformation prevents the knotter from effectively compressing the locking ring during subsequent uses, resulting in ineffective suture tightening. Consequently, sutures may detach from the locking ring, leading to poor tissue closure and surgical failure. In short, the insufficient durability and reliability of knotters limit their effectiveness in surgeries requiring multiple uses. Summary of the Invention

[0004] The main objective of this application is to provide a suture locking unit, knotter, and system to solve the problem in the prior art where irreversible deformation of the extrusion structure prevents effective extrusion of the locking ring.

[0005] On one hand, this application provides a suture locking unit, the suture locking unit comprising:

[0006] Installation pipe;

[0007] An extrusion member, at least partially disposed within the mounting tube, the extrusion member comprising a first extrusion arm and a second extrusion arm, the first extrusion arm being rotatably connected to the mounting tube along a rotation axis perpendicular to the axial direction of the mounting tube and extending in a first direction, the second extrusion arm being connected to the first extrusion arm near the rotation axis, and the second extrusion arm extending a certain distance away from the first direction and then crossing the rotation axis in the opposite direction.

[0008] Both the first extrusion arm and the second extrusion arm are rigid structures. Under the action of external force, the first extrusion arm can rotate along the rotation axis and approach the second extrusion arm. During the process of the second extrusion arm cooperating with the first extrusion arm to extrude the locking ring to the state of clamping the seam, the part of the second extrusion arm close to the rotation axis undergoes elastic deformation.

[0009] Furthermore, the thickness of the first extrusion arm is greater than the thickness of the second extrusion arm, and the ratio of the thickness of the first extrusion arm to the thickness of the second extrusion arm is between 2 and 5.

[0010] And / or, the first extrusion arm includes a first rotating part, a first arm and a first extrusion part, the first arm is connected between the first rotating part and the first extrusion part, and the first rotating part is connected to the mounting tube along the rotation axis;

[0011] The second extrusion arm includes a second arm and a second extrusion part, wherein the second arm is connected between the second extrusion part and the end of the first rotating part away from the first arm;

[0012] In this process, the first arm drives the first extrusion part to rotate synchronously along the rotation axis under the drive of an external force, so that the first extrusion part gradually approaches the second extrusion part. Until the second extrusion part cooperates with the first extrusion part to squeeze the locking ring to the clamping seam, the second arm generates elastic deformation, so as to have a driving force that tends to drive the first extrusion part away from the second extrusion part.

[0013] Furthermore, the first extrusion arm has an initial position and an extrusion position;

[0014] The suture locking unit further includes a push-pull member, which is at least partially disposed inside the mounting tube. The push-pull member is used to drive the first extrusion arm to move from the initial position to the extrusion position, or to remove the force applied to the first extrusion arm so that the first extrusion arm is reset from the extrusion position to the initial position under the elastic deformation drive of the second arm.

[0015] Wherein, when the first extrusion arm is in the initial position, the first extrusion part is far away from the second extrusion part, and the second arm does not undergo elastic deformation;

[0016] When the first extrusion arm is in the extrusion position, the first extrusion part is close to the second extrusion part, and the second arm undergoes elastic deformation.

[0017] And / or, the push-pull member, limited by the inner wall of the mounting tube, presses the first extrusion arm along the first direction to move from the initial position to the extrusion position;

[0018] Alternatively, the push-pull member, limited by the inner wall of the mounting tube, presses the first extrusion arm in a direction opposite to the first direction to move it from the initial position to the extrusion position.

[0019] Furthermore, a clearance space and a thread passage space are formed between the second arm and the mounting tube. The clearance space is connected to the thread passage space and is away from the second extrusion part. The mounting tube has a first thread passage hole, the second arm has a second thread passage hole, and the thread passage space is connected between the first thread passage hole and the second thread passage hole. The sewing thread passing through the locking ring extends out of the mounting tube through the second thread passage hole, the thread passage space, and the first thread passage hole in sequence.

[0020] The stitch locking unit further includes a cutter, which is at least partially located within the clearance space and moves synchronously with the push-pull member, and the end of the push-pull member that is close to the first compression part in the first direction passes over the blade of the cutter.

[0021] Wherein, the push-pull member can reach the first position, the second position and the third position in sequence along the first direction. When the push-pull member is in the first position, the first extrusion arm is in the initial position, the second arm does not produce elastic deformation, and the blade of the cutter is located in the clearance space and away from the line space.

[0022] When the push-pull member is in the second position, the first extrusion arm is in the extrusion position, the second arm undergoes elastic deformation, and the blade of the cutter is located within the clearance space and close to the line-passing space.

[0023] When the push-pull member is in the third position, the first extrusion arm is in the extrusion position, the second arm undergoes elastic deformation, and the blade of the cutter is located in the thread passage space and cuts the thread passing through the thread passage space.

[0024] And / or, the push-pull member includes a first connecting rod portion, a push-pull portion, and a snap-fit ​​portion, wherein the push-pull portion and the snap-fit ​​portion are respectively connected to the same end of the first connecting rod portion, the push-pull portion is used to press the first extrusion arm to move from the initial position to the extrusion position, the cutter is snapped with the snap-fit ​​portion and confined between the snap-fit ​​portion and the inner wall of the mounting tube;

[0025] The cutter and one of the locking parts have a first protrusion, and the other of the cutter and the locking part have a first slot, wherein the first protrusion and the first slot are fitted together.

[0026] Furthermore, the second arm includes a first segment, a second segment, and a third segment. The first segment extends away from the first direction and is connected between the first rotating part and the second segment. The second segment extends in a direction perpendicular to the rotation axis and away from the first extrusion arm and is connected between the first segment and the third segment. The third segment extends in the first direction and is connected between the second segment and the second extrusion part.

[0027] During the process where the first arm moves the first extrusion part closer to the second extrusion part under the action of external force, at least one of the first segment, the second segment and the third segment undergoes elastic deformation.

[0028] And / or, the first segment is connected between the first rotating part and the second segment in a wavy or straight line shape;

[0029] And / or, the second segment is connected between the first segment and the third segment in a wavy, C-shaped, V-shaped, or straight line shape, and the opening of the C-shaped or V-shaped second segment faces the first direction or is away from the first direction;

[0030] And / or, the third segment is connected between the second extrusion section and the second segment in a wavy or straight line shape.

[0031] Furthermore, the first extrusion part is toothed, and the second extrusion part is grooved, with the extension direction of the grooved second extrusion part being parallel to the rotation axis.

[0032] The mounting tube has a fitting part corresponding to the second extrusion part, and the fitting part is fitted and connected to the second extrusion part.

[0033] And / or, the side of the first arm opposite to the second arm gradually tilts along the first direction from the first rotating part to the first pressing part.

[0034] Furthermore, the extrusion member also includes a limiting end, which is connected to the end of the second extrusion part away from the second arm and covers the opening of the mounting tube. The limiting end is provided with a first limiting hole, which is used for the main body of the locking ring to pass through and to limit the flange of the locking ring.

[0035] The limiting end is integrally formed with the second extrusion arm;

[0036] Alternatively, the limiting end, the second extrusion arm, and the first extrusion arm are integrally formed.

[0037] On the other hand, this application also provides a knotter, the knotter including the thread locking unit described in any of the preceding claims; and

[0038] An operating unit is connected to the end of the mounting tube away from the extruder, and is used to drive the first extrusion arm to rotate along the rotation axis and approach the second extrusion arm, so that the second extrusion arm cooperates with the first extrusion arm to extrude the locking ring to the state of clamping the seam.

[0039] Furthermore, the operating unit includes a handle, the handle having a second limiting hole, and the end of the mounting tube away from the extruder having a second slot. The mounting tube passes through the handle, and the opposite slot walls along the axial direction of the mounting tube are respectively limited to the end faces of the opposite ends of the second limiting hole, so that the mounting tube is limited and locked in the handle.

[0040] The operating unit also includes a wrench, which is rotatably connected to the handle. The end of the push-pull member of the stitch locking unit away from the extrusion member extends out of the mounting tube and is connected to the wrench. The wrench rotates relative to the handle to drive the push-pull member to extrude the first extrusion arm, or to remove the extrusion force on the first extrusion arm.

[0041] Furthermore, the operating unit includes a handle, and one end of the mounting tube away from the extruder is inserted into the handle along the axial direction of the mounting tube;

[0042] The operating unit also includes a wrench, which is rotatably connected to the handle and universally connected to one end of the push-pull member of the stitch locking unit that extends out of the mounting tube via a ball joint. The wrench rotates relative to the handle, causing the ball joint and the push-pull member to move axially along the mounting tube to squeeze the first squeezing arm or remove the squeezing force on the first squeezing arm.

[0043] Furthermore, the wrench includes a connecting part, a second rotating part, and an operating part. The second rotating part is rotatably connected to the handle and is located between the connecting part and the operating part. The connecting part is universally connected to the ball head. The operating part extends out of the handle and, under the action of an external force, drives the wrench to rotate along the second rotating part, so that the connecting part drives the ball head and the push-pull member to move axially along the mounting tube.

[0044] The ball head component includes a ball head and a second connecting rod portion, wherein the opposite ends of the second connecting rod portion are respectively connected between the ball head and one end of the push-pull component that extends out of the mounting tube;

[0045] 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 to enter the limiting groove and the second 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.

[0046] And / or, the handle is configured to form a sliding cavity located in the direction of movement of the push-pull member away from the extrusion member;

[0047] The knotter also includes a limiting member, which is connected between the ball head and the 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;

[0048] The limiting member, the push-pull member, and the ball head member are detachably connected;

[0049] Alternatively, the limiting member, the push-pull member, and the ball head member are integrally formed;

[0050] Alternatively, the limiting member and the push-pull member can be integrally formed;

[0051] Alternatively, the limiting member and the ball head member are integrally formed.

[0052] Furthermore, the knotter includes an elastic element disposed inside the handle and connected between the wrench and the handle, for driving the handle to rotate so as to drive the push-pull member to remove the compression on the first compression arm;

[0053] Wherein, the elastic element drives the handle to rotate by pulling force so as to drive the push-pull member to remove the compression on the first compression arm. During the process of the wrench rotating relative to the handle and driving the push-pull member to compress the first compression arm, the elastic element is stretched within the elastic deformation range.

[0054] Alternatively, the elastic element drives the handle to rotate under pressure, thereby causing the push-pull member to remove the pressure on the first compression arm. During the process of the wrench rotating relative to the handle and causing the push-pull member to compress the first compression arm, the elastic element is compressed within its elastic deformation range.

[0055] Furthermore, this application also provides a knotter system, the knotter system comprising the knotter described in any of the preceding claims, and

[0056] A thread hooker, comprising a hooking member and a thread loop, wherein the hooking member 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 a locking ring and is sleeved on the thread loop, the thread loop is used for the thread to pass through, and after the thread loop is removed, the portion of the thread passes through the pulling portion.

[0057] Wherein, the locking ring passing through the pulling part is located between the hook part and the threading ring, or the locking ring passing through the pulling part is inserted into the hook part;

[0058] 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 locking ring, so that the locking ring passing through the pulling portion is limited between the hook portion and the threading ring;

[0059] And / or, the outer wall of the threading ring has a groove, and the pulling part is located in the groove.

[0060] In the suture locking unit of this application, the first compression arm, a rigid structure, is rotatably connected to the mounting tube along a rotation axis perpendicular to the axial direction of the mounting tube, and extends within the mounting tube along a first direction. This allows the first compression arm to be limited and connected within the mounting tube along the axial direction of the mounting tube, thereby giving the first compression arm good structural strength, making it less prone to deformation, and maintaining accuracy even after repeated use. The second compression arm is connected to the first compression arm near the rotation axis, and after extending a certain distance away from the first direction, the second compression arm crosses the rotation axis in the opposite direction, thereby making the second compression arm relative to the first... The length of the compression arm is effectively extended, and during the compression and rotation of the first compression arm, only the second compression arm undergoes a small elastic deformation to avoid irreversible elastic deformation of the second compression arm. The portion of the second compression arm that extends a certain distance away from the first direction can also share some pressure, thus helping the second compression arm to reset and drive the first compression arm to rotate away from the second compression arm. This allows the compression component to be reused under external force to effectively compress different locking rings, thereby ensuring that the compressed locking ring can effectively lock the sutures that have passed through it, avoiding surgical failure caused by sutures coming off the locking ring. Attached Figure Description

[0061] 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:

[0062] Figure 1This is a schematic diagram of the suture locking unit in one embodiment of this application.

[0063] Figure 2 This is an exploded view of the suture locking unit in one embodiment of this application.

[0064] Figure 3 This is a schematic diagram of the structure of the mounting tube in one embodiment of this application.

[0065] Figure 4 This is a schematic diagram of the extrusion component in one embodiment of this application.

[0066] Figure 5 -A is a cross-sectional view of a stitch locking unit in one embodiment of this application. The locking ring and stitch are not shown in the figure, and the push-pull member is in the first position. Figure 5 -B in Figure 5 -A shows the locking ring and stitching in their initial state, and the push-pull element in its first position; Figure 5 -C in Figure 5 -B shows the locking ring and stitching in a compressed state, and the push-pull element in the second position; Figure 5 -D in Figure 5 The diagram shows the locking ring in a compressed state and the cut seam, with the push-pull element in the third position, based on the -C diagram.

[0067] Figure 6 This is a schematic diagram of the knotter in one embodiment of this application.

[0068] Figure 7 This is a schematic diagram of the structure of the first handle in one embodiment of this application.

[0069] Figure 8 This is a schematic diagram of the structure of the second handle in one embodiment of this application.

[0070] Figure 9 This is a cross-sectional view of a knotter in one embodiment of the present application, showing the push-pull member in the first position.

[0071] Figure 10 This is a cross-sectional view of the knotter from another perspective in one embodiment of the present application, showing the push-pull member in the third position.

[0072] Figure 11 This is a schematic diagram of the structure of the first handle in another embodiment of this application.

[0073] Figure 12 This is an exploded schematic diagram of a knotter in one embodiment of this application.

[0074] Figure 13This is a schematic diagram of the structure of a wrench in one embodiment of this application.

[0075] Figure 14 This is a schematic diagram of the knotter in one embodiment of the present application, in which the second handle and part of the thread locking unit are hidden.

[0076] Figure 15 for Figure 14 Another perspective illustration.

[0077] Figure 16 This is an overall schematic diagram of a knotter system in one embodiment of this application.

[0078] Figure 17 -A is an overall schematic diagram of the hook device in one embodiment of this application; Figure 17 -B is a schematic diagram of the connection between the hook and the locking ring in one embodiment of this application.

[0079] Figure 18 -A is a schematic diagram of the cooperation of the hook, locking ring, sewing thread and sewing thread locking unit in one embodiment of this application, and the thread loop is hidden in the figure; Figure 18 -B is a cross-sectional schematic diagram of the engagement of the hook, locking ring, sewing thread, and sewing thread locking unit in one embodiment disclosed in this application.

[0080] The above figures include the following reference numerals:

[0081] The components include: a thread locking unit 100, a mounting tube 10, a fitting part 11, a first thread passage hole 12, a second slot 13, a pressing component 20, a first pressing arm 21, a first rotating part 211, a first arm 212, a first pressing part 213, an inclined surface 214, a second pressing arm 22, a second arm 221, a first section 2211, a second section 2212, a third section 2213, a second thread passage hole 2214, a second pressing part 222, a pressing chamber 23, a limiting end 24, a first limiting hole 241, a rotating shaft 30, a rotating axis 31, a push-pull component 40, a first connecting rod part 41, a push-pull part 42, a locking part 43, a first boss 431, a first limiting surface 432, a second limiting surface 433, clearance space 50, thread passage space 60, a cutter 70, a blade 71, a first slot 72, a first direction X, a locking ring 2000, and a main body. 2100, flange 2200, stitch 3000, knotter 1000, operating unit 200, handle 210, first handle 2102, first limiting groove 2103, second handle 2104, second limiting groove 2105, sliding cavity 2106, connecting post 2107, limiting cavity 2108, wrench 220, connecting part 2210, swing groove 2201, limiting groove 2202, notch 22 03, connecting hole 2204, second rotating part 2220, operating part 2230, ball head part 300, ball head 310, second connecting rod part 320, limiting part 400, elastic part 500, fixing part 600, rotating shaft 700, knotting system 4000, hook 4100, hook pull part 4110, hook part 4111, pulling part 4112, threading ring 4120, wire groove 4211. Detailed Implementation

[0082] 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.

[0083] Please see Figure 1-3 As shown, this application provides a suture locking unit 100. The suture locking unit 100 includes an installation tube 10, a pressing member 20, and a rotating shaft 30. The pressing member 20 is at least partially disposed within the installation tube 10 and is rotatably connected to the installation tube 10 via the rotating shaft 30. Under external force, the pressing member 20 compresses a locking ring 2000, causing the inner wall of the compressed portion of the locking ring 2000 to adhere and lock the suture 3000 passing through it. This secures the excess suture 3000 after tissue suturing, preventing it from retracting into the sutured tissue, which could lead to poor tissue adhesion, tissue separation at the suture site, and surgical failure.

[0084] Furthermore, the rotating shaft 30 is fixedly connected to the mounting tube 10, and the extrusion member 20 is rotatably connected to the rotating shaft 30; or the rotating shaft 30 is rotatably connected to the mounting tube 10, and the extrusion member 20 is fixedly connected to or rotatably connected to the rotating shaft 30. Wherein, the rotation axis 31 of the rotating shaft 30 is perpendicular to the axial direction of the mounting tube 10.

[0085] Preferably, the outer wall of the mounting tube 10 can be a circular or elliptical tube to facilitate the entry and exit of the suture locking unit 100 into the patient's body. Depending on the requirements, the outer wall of the mounting tube 10 can also be a rectangular tube or other structures that facilitate entry and exit from the patient's body, and is not limited here.

[0086] Further, please refer to Figure 4-5 As shown, the extrusion member 20 includes a first extrusion arm 21 and a second extrusion arm 22. The first extrusion arm 21 is rotatably connected to the mounting tube 10 via the rotating shaft 30 and extends in the first direction X. The second extrusion arm 22 is connected to the first extrusion arm 21 near the rotation axis 31, and the second extrusion arm 22 extends a certain distance away from the first direction X before crossing the rotation axis 31 in the opposite direction. This effectively extends the length of the second extrusion arm 22 relative to the first extrusion arm 21, and during the process of the first extrusion arm 21 being extruded and rotated, only the second extrusion arm 22 undergoes a small elastic deformation, thereby effectively preventing irreversible elastic deformation of the second extrusion arm 22, and ensuring that the second extrusion arm 22 extends a certain distance away from the first direction X. The separated part can also share some of the pressure, making the first compression arm 21 more stable during compression and repositioning. Therefore, it helps the second compression arm 22 to reposition and drives the first compression arm 21 to rotate away from the second compression arm 22, thereby realizing the repositioning of the second compression arm 22. In turn, the compression member 20 can be reused under the action of external force to effectively compress different locking rings 2000, thereby ensuring that the compressed locking ring 2000 can effectively lock the passing suture 3000, avoiding the problem of surgical failure caused by the suture 3000 coming off the locking ring 2000.

[0087] Furthermore, the first extrusion arm 21 is a rigid structure and is thicker than the second extrusion arm 22. The ratio of the thickness of the first extrusion arm 21 to the thickness of the second extrusion arm 22 is between 2 and 5. For example, when the thickness of the second extrusion arm 22 is 0.5 mm, the thickness of the first extrusion arm 21 is between 1 mm and 2.5 mm; when the thickness of the second extrusion arm 22 is 0.7 mm, the thickness of the first extrusion arm 21 is between 1.4 mm and 3.5 mm. Therefore, the first extrusion arm 21 has good structural strength, is not easily deformed, and can maintain accuracy even after repeated use. In addition, it is also convenient to control the overall size of the extrusion component 20, so as to facilitate the installation of the extrusion component 20 into the mounting tube 10.

[0088] The second extrusion arm 22 is also a rigid structure, and the first extrusion arm 21 can rotate along the rotation axis 31 and approach the second extrusion arm 22 under the action of external force. During the process of the second extrusion arm 22 cooperating with the first extrusion arm 21 to extrude the locking ring 2000 to the state of clamping the seam 3000, the part of the second extrusion arm 22 approaching the rotation axis 31 undergoes elastic deformation.

[0089] Furthermore, a compression cavity 23 is formed between the first compression arm 21 and the second compression arm 22, the compression cavity 23 being used to accommodate the locking ring 2000. As the first compression arm 21 gradually approaches the second compression arm 22 under the action of external force, it compresses the locking ring 2000 located in the compression cavity 23, so that the compressed locking ring 2000 clamps and locks the passing sewing thread 3000.

[0090] Further, please refer to Figure 4 As shown, the first extrusion arm 21 includes a first rotating part 211, a first arm 212, and a first extrusion part 213. The first arm 212 is connected between the first rotating part 211 and the first extrusion part 213. The first rotating part 211 is connected to the mounting tube 10 along the rotation axis 31 via the rotating shaft 30. This allows the first extrusion arm 21 to rotate relative to the mounting tube 10 along the rotation axis 31, and the extrusion member 20 is positioned and installed within the mounting tube 10 via the rotating shaft 30.

[0091] The second extrusion arm 22 includes a second arm 221 and a second extrusion portion 222. The second arm 221 is connected between the second extrusion portion 222 and the end of the first rotating portion 211 away from the first arm 212. The second extrusion portion 222 and the first extrusion portion 213 are spaced apart and opposite to each other to form the extrusion cavity 23.

[0092] Driven by an external force, the first arm 212 drives the first extrusion part 213 to rotate synchronously along the rotation axis 31, so that the first extrusion part 213 gradually approaches the second extrusion part 222, thereby compressing the size of the extrusion cavity 23 until the second extrusion part 222 cooperates with the first extrusion part 213 to extrude the locking ring 2000 to clamp the sewing thread 3000, thereby fixing the sewing thread 3000 passing through the locking ring 2000.

[0093] As the first extrusion arm 21 rotates under the action of an external force to bring the first extrusion part 213 closer to the second extrusion part 222, the second arm 221 undergoes elastic deformation, thereby having a driving force that tends to drive the first extrusion part 213 away from the second extrusion part 222. As the external force applied to the first extrusion arm 21 is gradually removed, the first extrusion arm 21 gradually returns to its original position under the action of the elastic deformation force of the second extrusion arm 22, so that the first extrusion part 213 moves away from the second extrusion part 222, and the second extrusion arm 22 elastically returns to its original position.

[0094] During the rotation of the first extrusion arm 21 to bring the first extrusion part 213 closer to the second extrusion part 222, only the second arm 221 undergoes elastic deformation, so that the first extrusion part 213 and the second extrusion part 222 can precisely cooperate to accurately extrude the locking ring 2000 entering the extrusion chamber 23, so that the extruded locking ring 2000 can effectively clamp the sewing thread 3000 that it passes through.

[0095] Further, please refer to Figure 5 As shown, the first extrusion arm 21 has an initial position and an extrusion position. When the first extrusion arm 21 is in the initial position, it is not subjected to external force. At this time, the first extrusion part 213 is away from the second extrusion part 222, the cavity volume of the extrusion chamber 23 is at its maximum, and the second arm 221 does not undergo elastic deformation. When the first extrusion arm 21 is in the extrusion position, it rotates along the rotation axis 31 under the action of external force. At this time, the first extrusion part 213 moves closer to the second extrusion part 222, the cavity volume of the extrusion chamber 23 decreases, and the locking ring 2000 located in the extrusion chamber 23 is extruded to effectively lock the thread 3000 that it passes through. The elastic deformation of the second arm 221 reaches its maximum.

[0096] The locking ring 2000 has an initial state and a compressed state. When the locking ring 2000 is in the initial state, the suture 3000 can enter and exit the locking ring 2000 and move relative to the locking ring 2000. When the locking ring 2000 is in the compressed state, the suture 3000 passing through the locking ring 2000 is clamped by the locking ring 2000 and cannot move relative to the locking ring 2000.

[0097] Please see Figure 2 , 5 As shown, the suture locking unit 100 further includes a push-pull member 40, which is at least partially disposed within the mounting tube 10, for driving the first compression arm 21 from the initial position to the compression position; or removing the force applied to the first compression arm 21 so that the first compression arm 21 is reset from the compression position to the initial position under the elastic deformation drive of the second arm 221.

[0098] Furthermore, when the first extrusion arm 21 is in the initial position, the push-pull member 40 does not extrude the first extrusion arm 21. At this time, the first extrusion part 213 is far away from the second extrusion part 222, the cavity volume of the extrusion chamber 23 is at its maximum, the second arm 221 does not undergo elastic deformation, and the locking ring 2000 in the initial state or the extrusion state can freely enter and exit the extrusion chamber 23.

[0099] When the first extrusion arm 21 is in the extrusion position, the push-pull member 40 extrudes the first extrusion arm 21. At this time, the first extrusion part 213 approaches the second extrusion part 222, the cavity volume of the extrusion chamber 23 decreases, the second arm 221 undergoes elastic deformation, and the locking ring 2000 in the extrusion state is clamped in the extrusion chamber 23.

[0100] Furthermore, under the constraint of the inner wall of the mounting tube 10, the push-pull member 40 presses the first extrusion arm 21 along the first direction X to move from the initial position to the extrusion position.

[0101] The rotating shaft 30 is connected inside the mounting tube 10 and is located at the middle position of the radial section of the mounting tube 10, such that the rotating shaft 30 is spaced apart from the inner wall of the corresponding mounting tube 10 in a direction perpendicular to the rotation axis 31.

[0102] Therefore, when the first extrusion arm 21 is in the initial position, the first arm 212 is close to the inner wall of the corresponding mounting tube 10 on the side away from the first extrusion part 213. The extrusion member 20 moves along the first direction X between the inner wall of the mounting tube 10 on the side close to the first extrusion arm 21 and away from the second extrusion arm 22, so as to extrude the first arm 212 so that the first extrusion arm 21 rotates relative to the rotating shaft 30 until the first extrusion part 213 approaches the second extrusion part 222, and the locking ring 2000 located in the extrusion chamber 23 is extruded to the extrusion state.

[0103] Alternatively, the push-pull member 40, limited by the inner wall of the mounting tube 10, presses the first pressing arm 21 from the initial position to the pressing position in a direction opposite to the first direction X. This causes the first pressing arm 21 to rotate and drive the first pressing part 213 to gradually approach the second pressing part 222, until the second pressing part 222 cooperates with the first pressing part 213 to press the locking ring 2000 into the pressing state.

[0104] Furthermore, when the first extrusion arm 21 is in the initial position, the extrusion end of the push-pull member 40 is located on the side of the first extrusion arm 21 away from the second extrusion part 222, and the extrusion end has a wedge-shaped structure. The side of the first extrusion arm 21 away from the first extrusion part 213 gradually slopes upward in a direction opposite to the first direction X to form an inclined plane. During the movement of the push-pull member 40 in a direction opposite to the first direction X, the extrusion end abuts against the inclined plane so that the first extrusion arm 21 rotates and drives the first extrusion part 213 to approach the second extrusion part 222. Thus, with the cooperation of the second extrusion part 222, the locking ring 2000 located in the extrusion cavity 23 is extruded so that the locking ring 2000 locks the thread 3000 that passes through it.

[0105] For further information, please refer to [link / reference]. Figure 4-5As shown, the second arm 221 includes a first segment 2211, a second segment 2212, and a third segment 2213. The first segment 2211 extends away from the first direction X and connects between the first rotating part 211 and the second segment 2212; the second segment 2212 extends in a direction perpendicular to the rotation axis 31 and away from the first extrusion arm 21, and connects between the first segment 2211 and the third segment 2213; the third segment 2213 extends along the first direction X and connects between the second segment 2212 and the second extrusion part 222, so that the second arm 221 first extends a certain distance away from the first direction X, and then extends in the opposite direction along the first direction X and crosses the rotation axis 31 to connect with the second extrusion part 222.

[0106] During the process where the first arm 212, under the action of external force, drives the first pressing part 213 closer to the second pressing part 222, at least one of the first segment 2211, the second segment 2212, and the third segment 2213 undergoes elastic deformation. That is to say, during the process where the push-pull member 40 presses the first arm 212 to make the first pressing arm 21 rotate along the rotation axis 31 and drive the first pressing part 213 closer to the second pressing part 222, the elastic deformation can occur in the first segment 2211, the second segment 2212, the third segment 2213, or both the first segment 2211 and the second segment 2212, or both the first segment 2211 and the third segment 2213, or all of the first segment 2211, the second segment 2212, and the third segment 2213.

[0107] Furthermore, the first segment 2211 is connected between the first rotating part 211 and the second segment 2212 in a wavy or straight line shape, thereby effectively increasing the length of the first segment 2211 to enhance the deformation of the first segment 2211 under elastic deformation, and avoiding the first segment 2211 from extending too far away from the first direction X, which would increase the length of the mounting tube 10, so as to control the overall volume of the stitch locking unit 100.

[0108] The second segment 2212 is connected between the first segment 2211 and the third segment 2213 in a wavy, C-shaped, V-shaped, or straight line shape. This can effectively increase the length of the second segment 2212 to enhance the elastic deformation of the second segment 2212 and prevent the second segment 2212 from extending too far away from the first direction X, which would increase the length of the mounting tube 10 and thus facilitate control of the overall volume of the stitch locking unit 100.

[0109] The opening of the second segment 2212, which is C-shaped or V-shaped, faces the first direction X or is away from the first direction X. Preferably, the opening of the second segment 2212, which is C-shaped or V-shaped, faces the first direction X, so as to simplify the structure of the extrusion 20 and reduce the manufacturing difficulty.

[0110] The third segment 2213 is connected between the second extrusion part 222 and the second segment 2212 in a wavy or straight line shape, thereby effectively increasing the length of the third segment 2213 to enhance the deformation of the third segment 2213 during elastic deformation.

[0111] Furthermore, the first extrusion part 213 is toothed and the second extrusion part 222 is grooved, so that the first extrusion part 213 and the second extrusion part 222 cooperate to extrude the locking ring 2000 located in the extrusion cavity 23 into a V-shape, thereby shortening the overall length of the locking ring 2000, which is beneficial to control the amount and volume of implants such as the locking ring 2000 and suture 3000, increasing the efficiency of wound healing and shortening the postoperative recovery time of the patient.

[0112] For further information, please refer to [link / reference]. Figure 1-4 As shown, the extension direction of the groove-shaped second extrusion part 222 is parallel to the rotation axis 31. The mounting tube 10 is configured with a fitting part 11 corresponding to the second extrusion part 222, and the fitting part 11 is fitted and connected to the second extrusion part 222. This allows the second extrusion part 222 and the mounting tube 10 to be mutually limited along the axial direction of the mounting tube 10 and fixedly connected by welding or bonding. The gap of the fitting part 11 can be filled by the outside of the second extrusion part 222, thereby effectively controlling the length of the mounting tube 10. Furthermore, under the limiting action of the rotating shaft 30, the extrusion part 20 and the mounting tube 10 are stably connected, so that the second extrusion part 222 is not affected by the elastic deformation of the second arm 221. As a result, the second extrusion part 222 can remain relatively stationary with the mounting tube 10, so that the first extrusion part 213 can approach the second extrusion part 222 to extrude the locking ring 2000 into the extruded state.

[0113] For further information, please refer to [link / reference]. Figure 4-5 As shown, when the push-pull member 40 moves along the first direction X to squeeze the first squeeze arm 21, the side of the first arm 212 away from the second arm 221 is an inclined surface 214. The inclined surface 214 gradually slopes upward along the first direction X from the first rotating part 211 to the first squeeze part 213, and under the squeeze of the push-pull member 40, the first squeeze arm 21 rotates along the rotation axis 31.

[0114] By setting the inclined surface 214 to gradually tilt along the first direction X from the first rotating part 211 to the first pressing part 213, the stroke of the first arm 212 in contact with and being pressed by the push-pull member 40 can be effectively extended. This ensures that the force applied to the push-pull member 40 is applied to the first arm 212 smoothly, avoiding the first pressing arm 21 from rotating too fast, which would result in an excessive force acting on the second arm 221 to cause elastic deformation of the second arm 221, leading to fatigue of the second arm 221.

[0115] Furthermore, the extrusion member 20 also includes a limiting end 24. The limiting end 24 is connected to the end of the second extrusion part 222 away from the second arm 221 and covers the opening of the mounting tube 10 to close the opening of the mounting tube 10, so as to prevent the opening of the mounting tube 10 from scratching the tissues in the patient's body when the suture locking unit 100 enters the patient's body.

[0116] For further information, please refer to [link / reference]. Figure 5 As shown in -B, the locking ring 2000 includes a main body portion 2100 and a flange portion 2200. The flange portion 2200 is located at one end of the main body portion 2100 and protrudes outward along the radial direction of the main body portion 2100.

[0117] The limiting end 24 is provided with a first limiting hole 241, which is used for the main body 2100 of the locking ring 2000 to pass through and to limit the flange 2200 of the locking ring 2000, so that the locking ring 2000 can be inserted into a designated position in the compression chamber 23, so as to accurately compress the locking ring 2000, so that the locking ring 2000 compressed to the compression state can effectively lock the passing sewing thread 3000.

[0118] Furthermore, the limiting end 24 and the second extrusion arm 22 are integrally formed to reduce the number of structural components in the stitch locking unit 100, reduce assembly difficulty and assembly steps, and improve assembly efficiency and structural strength. Alternatively, the limiting end 24, the second extrusion arm 22, and the first extrusion arm 21 are integrally formed to further reduce assembly difficulty and assembly steps, and improve assembly efficiency, the structural strength of the extrusion part 20, and the alignment accuracy of the first extrusion part 213 and the second extrusion part 222.

[0119] For further information, please refer to [link / reference]. Figure 5 As shown in -A, a clearance space 50 and a wire passage space 60 are formed between the second arm 221 and the mounting tube 10. The clearance space 50 is connected to the wire passage space 60 and is away from the second extrusion part 222.

[0120] The mounting tube 10 has a first thread hole 12, the second arm 221 has a second thread hole 2214, the thread space 60 is connected between the first thread hole 12 and the second thread hole 2214, and the sewing thread 3000 passing through the locking ring 2000 extends out of the mounting tube 10 through the second thread hole 2214, the thread space 60 and the first thread hole 12 in sequence.

[0121] Please refer to the following: Figure 2 , 5 As shown, the suture locking unit 100 also includes a cutter 70, which is at least partially located within the clearance space 50 and moves synchronously with the push-pull member 40. The cutter 70 is used to cut the suture 3000 located in the suture passage space 60 after the first pressing part 213 and the second pressing part 222 have pressed the locking ring 2000 to the pressing position, thereby completing the locking and cutting of the suture 3000.

[0122] Furthermore, the end of the push-pull member 40 near the first extrusion part 213 along the first direction X passes over the blade 71 of the cutter 70, so that the end of the push-pull member 40 pressing against the first arm 212 is located in front of the cut blade 71 along the first direction X, so that after the push-pull member 40 extrudes the first arm 212, causing the first extrusion part 213 and the second extrusion part 222 to cooperate to place the locking ring 2000 at the extrusion position, it cuts off the excess stitching 3000.

[0123] Furthermore, the push-pull member 40 can sequentially reach a first position, a second position, and a third position along the first direction X. Please refer to [further details]. Figure 5As shown in -B, when the push-pull member 40 is in the first position, the first extrusion arm 21 is in the initial position, the locking ring 2000 located in the extrusion chamber 23 is in the initial state, the second arm 221 does not produce elastic deformation, and the blade 71 of the cutter 70 is located in the clearance space 50 and away from the line passage space 60.

[0124] Please refer to the following: Figure 5 As shown in -C, when the push-pull member 40 is in the second position, the first extrusion arm 21 is in the extrusion position, the locking ring 2000 located in the extrusion chamber 23 is in the extrusion state, the second arm 221 undergoes elastic deformation, and the blade 71 of the cutter 70 is located in the clearance space 50 and close to the line passage space 60.

[0125] Please refer to the following: Figure 5 As shown in -D, when the push-pull member 40 is in the third position, the first extrusion arm 21 is in the extrusion position, the locking ring 2000 located in the extrusion chamber 23 is still in the extrusion state, the second arm 221 undergoes elastic deformation, the blade 71 of the cutter 70 is located in the thread passage space 60, and cuts the sewing thread 3000 passing through the thread passage space 60.

[0126] For further information, please refer to [link / reference]. Figure 2 , 5 As shown in Figure B, the push-pull member 40 includes a first connecting rod portion 41, a push-pull portion 42, and a locking portion 43. The push-pull portion 42 and the locking portion 43 are respectively connected to the same end of the first connecting rod portion 41. The first connecting rod portion 41 is movably confined within the mounting tube 10 along the axial direction of the mounting tube 10, and is used to drive the push-pull portion 42 and the locking portion 43 to move synchronously under the drive of an external force.

[0127] The push-pull portion 42 is used to press the first pressing arm 21 from the initial position to the pressing position, so that the first pressing portion 213 moves closer to the second pressing portion 222 and presses the locking ring 2000 located in the pressing chamber 23 from the initial state to the pressing state. The cutter 70 engages with the locking portion 43 and is limited between the locking portion 43 and the inner wall of the mounting tube 10, and is used to move synchronously with the push-pull member 40 to cut the stitch 3000 passing through the locking ring 2000 which has been pressed to the pressing state.

[0128] Please see Figure 3 , 7 As shown, one of the cutter 70 and the locking part 43 has a first protrusion 431, and the other of the cutter 70 and the locking part 43 has a first locking groove 72. The first protrusion 431 and the first locking groove 72 are fitted together in a matching manner.

[0129] Furthermore, the locking part 43 includes an adjacent first limiting surface 432 and a second limiting surface 433. The first limiting surface 432 is away from the push-pull part 42, and the second limiting surface 433 faces the push-pull part 42. The first boss 431 is provided on the first limiting surface 432. The cutter 70 has a first slot 72, which is locked and engaged with the first boss 431. The end of the cutter 70 away from its blade 71 abuts against the second limiting surface 433, and the side near the first boss 431 abuts against the first limiting surface 432. The side away from the first limiting surface 432 is locked and engaged with the inner wall of the mounting tube 10. This allows the cutter 70 to be locked and engaged between the locking part 43 and the corresponding inner wall of the mounting tube 10. The locking and engaging of the cutter 70 can be achieved without the need for a fixing structure, which facilitates the assembly or replacement of the cutter 70.

[0130] Please see Figure 6 As shown, on the other hand, this application also provides a knotter 1000. The knotter 1000 includes the above-described suture locking unit 100. Therefore, the knotter 1000 has all the beneficial effects of the suture locking unit 100 described in any of the above embodiments, which will not be repeated here.

[0131] Furthermore, the knotter 1000 also includes an operation unit 200. The operation unit 200 is fixedly connected to the end of the mounting tube 10 away from the extruder 20, and is used to drive the first extruder arm 21 to rotate along the rotation axis 31 and approach the second extruder arm 22, so that the second extruder arm 22 cooperates with the first extruder arm 21 to extrude the locking ring 2000 to the extruded state of clamping the seam 3000.

[0132] Further, in the embodiments of this application, please refer to Figure 6-10 As shown, the operating unit 200 includes a handle 210 and a wrench 220. The handle 210 is connected to the mounting tube 10, and the wrench 220 is connected to the end of the first connecting rod 41 away from the push-pull part 42, for driving the push-pull member 40 to move between the first position, the second position, and the third position under the action of external force.

[0133] The handle 210 has a second limiting hole, and the end of the mounting tube 10 away from the extruder 20 has a second slot 13. The mounting tube 10 passes through the handle 210, and the opposite groove walls of the second slot 13 along the axial direction of the mounting tube 10 are respectively limited to the end faces of the opposite ends of the second limiting hole, so that the second slot 13 is limited to the second limiting hole, thereby limiting the connection between the second slot 13 and the second limiting hole, so that the mounting tube 10 is limited and locked in the handle 210.

[0134] Further, please refer to Figure 7-8 As shown, the handle 210 includes a first handle 2102 and a second handle 2104. The first handle 2102 is configured to form a first limiting groove 2103, and the second handle 2104 is configured to form a second limiting groove 2105. The first handle 2102 and the second handle 2104 are connected such that the first limiting groove 2103 and the second limiting groove 2105 form a second limiting hole.

[0135] Furthermore, the wrench 220 is rotatably connected to the handle 210. The wrench 220 rotates relative to the handle 210, causing the push-pull member 40 to move between the first position, the second position, and the third position. During the movement from the first position to the second position and the third position, the wrench 220 squeezes the first compression arm 21, and after moving from the second position to the first position, the compression force on the first compression arm 21 is removed.

[0136] Further, in the embodiments of this application, please refer to Figure 6 , 11 As shown in Figure 15, the operating unit 200 includes a handle 210 and a wrench 220. One end of the mounting tube 10 away from the extruder 20 is inserted into the handle 210 along the axial direction of the mounting tube 10, so that the mounting tube 10 is fixedly connected to the handle 210.

[0137] The mounting tube 10 extends into the handle 210 and is threadedly connected to the fixing member 600. The handle 210 is also provided with a limiting cavity 2108. The fixing member 600 is located in the limiting cavity 2108, thereby achieving a fixed connection between the mounting tube 10 and the handle 210 by limiting and snapping the fixing member 600 into the limiting cavity 2108.

[0138] The wrench 220 is rotatably connected to the handle 210 and is universally connected to one end of the push-pull member 40 of the stitch locking unit 100 extending out of the mounting tube 10 via a ball joint 300. This allows the wrench 220 to adaptively maintain the ball joint 300 along the axial direction of the mounting tube 10 during rotation, preventing the ball joint 300 and / or the push-pull member 40 from extending out of the mounting tube 10 while the wrench 220 is driving the push-pull member 40 to move axially. The portion extending from the mounting tube 10 needs to undergo a certain deformation to move along the axial direction of the mounting tube 10. Therefore, by universally connecting the ball joint 300 to the wrench 220 and to the end of the push-pull member 40 extending from the mounting tube 10, the ball joint 300 and the push-pull member 40 can always maintain movement along the axial direction of the mounting tube 10, thereby improving the smoothness of driving the push-pull member 40 to move along the axial direction of the mounting tube 10 and reducing the force required for driving.

[0139] Further, please refer to Figure 13 As shown, the wrench 220 includes a connecting part 2210, a second rotating part 2220, and an operating part 2230. The second rotating part 2220 is rotatably connected to the handle 210 via a rotating shaft 700 and is located between the connecting part 2210 and the operating part 2230. The connecting part 2210 is universally connected to the ball head 300. The operating part 2230 extends out of the handle 210 and, under the action of an external force, drives the wrench 220 to rotate along the second rotating part 2220, so that the connecting part 2210 drives the ball head 300 and the push-pull member 40 to move axially along the mounting tube 10.

[0140] The operating part 2230 can be used in conjunction with the handle 210 for medical personnel to hold and move or release the operating part 2230 so that the wrench 220 rotates relative to the handle 210.

[0141] Further, please refer to Figure 12 As shown, the ball head 300 includes a ball head 310 and a second connecting rod 320. The two opposite ends of the second connecting rod 320 are respectively connected between the ball head 310 and one end of the push-pull member 40 extending out of the mounting tube 10, so that the wrench 220 rotates and drives the push-pull member 40 to maintain movement along the axial direction of the mounting tube 10.

[0142] Further, please refer to Figure 13As shown, the connecting portion 2210 is configured with a swing groove 2201, a limiting groove 2202, and a notch 2203. The notch 2203 connects to the same side of the swing groove 2201 and the limiting groove 2202, and is used to allow the ball head 310 to enter the limiting groove 2202 and the second connecting rod portion 320 to enter the swing groove 2201, so as to facilitate the assembly of the ball head 300 with the connecting portion 2210.

[0143] The swing groove 2201 is connected to the limiting groove 2202, and the swing groove 2201 is V-shaped in the direction away from the limiting groove 2202. The ball head 310 is located in the limiting groove 2202. The connecting rod passes through the swing groove 2201 and is connected to one end of the push-pull member 40 that extends out of the mounting tube 10. By setting the V-shaped swing groove 2201 and the limiting groove 2202, the ball head 300 is kept moving in the axial direction of the mounting tube 10 during the process of the ball head 300 being pushed or pulled by the wrench 220 to drive the push-pull member 40 to move between the first position, the second position and the third position. This avoids the end of the push-pull member 40 extending out of the mounting tube 10 and close to the wrench 220 being deflected relative to the axial direction of the mounting tube 10 under the drive of the wrench 220. This would prevent the push-pull member 40 from being squeezed and limited between itself and the inner wall of the mounting tube 10 at the position extending out of the mounting tube 10, causing the push-pull member 40 to switch between the first position, the second position and the third position without smoothness, and causing irreversible deformation of the mounting tube 10 and the push-pull member 40.

[0144] Further, please refer to Figure 11-12 As shown in Figure 14, the handle 210 is configured to form a sliding cavity 2106, which is located in the direction of movement of the push-pull member 40 away from the squeezing member 20, and is located between the second limiting hole and the wrench 220.

[0145] The knotter 1000 further includes a limiting member 400, which is connected between the ball head member 300 and the end of the push-pull member 40 that extends out of the mounting tube 10, and is slidably limited within the sliding cavity 2106 along the movement direction of the push-pull member 40 (i.e., the axial direction of the mounting tube 10); thereby enabling the push-pull member 40 to connect with the ball head member 300, and allowing the limiting member 40 to slide within the sliding cavity 2106 along the axial direction of the mounting tube 10, so that the push-pull member 40 can stably maintain axial movement along the mounting tube 10 and will not rotate relative to the central axis of the mounting tube 10, thereby enabling the push-pull member 40 to stably and accurately squeeze or release the first extrusion arm 21.

[0146] Furthermore, the limiting member 400, the push-pull member 40, and the ball-end member 300 are detachably connected to facilitate the assembly of the ball-end member 300 with the handle 210. Alternatively, the limiting member 400, the push-pull member 40, and the ball-end member 300 are integrally formed to improve the structural strength between them and simplify the assembly process. Alternatively, the limiting member 400 and the push-pull member 40 are integrally formed to improve the structural strength between them and facilitate the assembly of the ball-end member 300 with the handle 210, simplifying the assembly process. Alternatively, the limiting member 400 and the ball-end member 300 are integrally formed to simplify the assembly process.

[0147] Further, please refer to Figure 12 , 14 As shown in Figure 15, the knotter 1000 includes an elastic element 500. The elastic element 500 is disposed inside the handle 210 and connected between the wrench 220 and the handle 210, for driving the handle 210 to rotate so as to drive the push-pull member 40 to remove the compression on the first compression arm 21.

[0148] In the embodiments of this application, the elastic element 500 drives the handle 210 to rotate by pulling force, thereby causing the push-pull member 40 to remove the compression on the first compression arm 21. During the process of the wrench 220 rotating relative to the handle 210 and causing the push-pull member 40 to compress the first compression arm 21, the elastic element 500 is stretched within its elastic deformation range. Further, the elastic element 500 can be a tension spring, elastic rope, elastic band, or other elastic element that is elastically stretched after being subjected to tension and can return to its original position.

[0149] Further, please refer to Figure 9-11 As shown in Figures 14-15, the wrench 220 also has a connecting hole 2204 on the connecting part 2210, and the handle 210 has a connecting post 2107. The elastic element 500 is connected between the connecting hole 2204 and the connecting post 2107. During the process of the wrench 220 rotating and driving the push-pull member 40 to move from the first position to the second position or the third position, the elastic element 500 is stretched within its elastic deformation range. When the external force applied to the wrench 220 is removed, the elastic element 500 drives the wrench 220 to rotate in the opposite direction so that the push-pull member 40 moves from the third position to the second position, and then from the second position to the first position, thereby causing the first pressing arm 21 to reset from the pressing position to the initial position.

[0150] In embodiments of this application, the elastic element 500 can also be driven by pressure to rotate the handle 210, thereby causing the push-pull member 40 to remove the pressure on the first compression arm 21. During the process of the wrench 220 rotating relative to the handle 210 and causing the push-pull member 40 to compress the first compression arm 21, the elastic element 500 is compressed within its elastic deformation range. Further, the elastic element 500 can be a metal spring, silicone spring, compression spring, or other elastic element 500 that is elastically compressed and can return to its original position after being subjected to compressive force.

[0151] Furthermore, the elastic element 500 can abut against the connection portion 2210 and the end of the handle 210 near the seam locking unit 100, or it can abut against the grip portion and the end of the handle 210 away from the seam locking unit 100. During the process of the wrench 220 rotating and driving the push-pull member 40 to move from the first position to the second position or the third position, the elastic element 500 is compressed within its elastic deformation range. When the external force applied to the wrench 220 is removed, the elastic element 500 drives the wrench 220 to rotate in the opposite direction so that the push-pull member 40 moves from the third position to the second position, and then from the second position to the first position, thereby causing the first compression arm 21 to reset from the compression position to the initial position.

[0152] On the other hand, please refer to Figure 16-18 As shown, this application also provides a knotter system 4000, which includes the knotter 1000 described in any of the above claims. Therefore, the knotter system 4000 has all the aforementioned beneficial effects, which will not be repeated here. Further, the knotter system 4000 also includes a thread hook 4100. The thread hook 4100 is used to cooperate with the knotter 1000 to place the locking ring 2000 within the compression chamber 23, and to pass the suture 3000 extending from the suture tissue through the locking ring 2000 and out of the knotter 1000 from the suture hole.

[0153] Furthermore, the hook device 4100 includes a hook member 4110 and a thread loop 4120. The hook member 4110 includes a hook portion 4111 and a pulling portion 4112. The pulling portion 4112 is connected to one end of the hook portion 4111. The pulling portion 4112 passes through the locking ring 2000 and is sleeved on the thread loop 4120. The thread loop 4120 is used for the thread 3000 to pass through, and after the thread loop 4120 is removed, this portion of the thread 3000 passes through the pulling portion 4112.

[0154] The outer diameter of the hook portion 4111 along its extending direction is smaller than the diameter of the limiting hole and larger than the diameter of the locking ring 2000, so that the locking ring 2000 passing through the pulling portion 4112 is limited between the hook portion 4111 and the threading ring 4120; or, the locking ring 2000 passing through the pulling portion 4112 is inserted into the hook portion 4111, so that the locking ring 2000 can be pre-positioned and connected to the hook portion 4111. 111 is located near one end of the pulling part 4112 to facilitate the pre-assembly of the locking ring 2000 onto the hook 4100. The end of the hook part 4111 away from the pulling part 4112 is sequentially passed through the limiting hole, the extrusion chamber 23, the thread passage chamber, and the thread passage hole, so that the main body 2100 of the locking ring 2000 is assembled into the extrusion chamber 23 and the flange part 2200 is limited to the side of the limiting hole away from the extrusion chamber 23. This allows for quick and efficient precise attachment of the locking ring 2000 to the knotter 1000 via the hook 4100. Simultaneously, the thread loop 4120 can limit the locking ring 2000, preventing it from falling off, and also supports the pulling part 4112, allowing the suture 3000 extending from the suture tissue to pass through the thread loop 4120 before being removed. After passing through the rope-like pulling part 4112, and further during the process of pulling the hook part 4111 away from the knotter 1000, the sewing thread 3000 passing through the pulling part 4112 passes through the lock ring 2000, the second thread hole 2214, the thread cavity and the first thread hole 12 in sequence with the pulling part 4112 and then extends out of the knotter 1000, thereby realizing the threading action of the sewing thread 3000 passing through the lock ring 2000.

[0155] The pulling part 4112 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 locking ring 2000 and be sleeved on the threading ring 4120, and to facilitate the removal of the threading ring 4120 and sequentially passing through the locking ring 2000, the second thread hole 2214, the thread cavity, and the first thread hole 12.

[0156] Further, please refer to Figure 17-18 As shown, the outer wall of the threading ring 4120 has a wire groove 4211, and the pulling part 4112 is located in the wire groove 4211 so that the pulling part 4112 can be stably sleeved on the threading ring 4120.

[0157] 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 system, characterized in that, The knotter system includes a knotter, the knotter including a suture locking unit, the suture locking unit including a mounting tube and a clamping element, the clamping element being at least partially disposed within the mounting tube; and A thread hooker, comprising a hooking member and a thread loop, wherein the hooking member 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 a locking ring and is sleeved on the thread loop, the thread loop is used for the thread to pass through, and after the thread loop is removed, the portion of the thread passes through the pulling portion. Wherein, the locking ring passing through the pulling part is located between the hook part and the threading ring, or the locking 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 diameter of the limiting hole and larger than the diameter of the locking ring, so that the locking ring passing through the pulling portion is limited between the hook portion and the threading ring; And / or, the outer wall of the threading ring has a groove, and the pulling part is located in the groove.

2. The knotter system according to claim 1, characterized in that, The extrusion member includes a first extrusion arm and a second extrusion arm. The first extrusion arm is rotatably connected to the mounting tube along a rotation axis perpendicular to the axial direction of the mounting tube and extends in a first direction. The second extrusion arm is connected to the first extrusion arm near the rotation axis, and the second extrusion arm extends a certain distance away from the first direction and then crosses the rotation axis in the opposite direction. Both the first extrusion arm and the second extrusion arm are rigid structures. Under the action of external force, the first extrusion arm can rotate along the rotation axis and approach the second extrusion arm. During the process of the second extrusion arm cooperating with the first extrusion arm to extrude the locking ring to the state of clamping the seam, the part of the second extrusion arm close to the rotation axis undergoes elastic deformation.

3. The knotter system according to claim 2, characterized in that, The thickness of the first extrusion arm is greater than the thickness of the second extrusion arm, and the ratio of the thickness of the first extrusion arm to the thickness of the second extrusion arm is between 2 and 5. And / or, the first extrusion arm includes a first rotating part, a first arm and a first extrusion part, the first arm is connected between the first rotating part and the first extrusion part, and the first rotating part is connected to the mounting tube along the rotation axis; The second extrusion arm includes a second arm and a second extrusion part, wherein the second arm is connected between the second extrusion part and the end of the first rotating part away from the first arm; In this process, the first arm drives the first extrusion part to rotate synchronously along the rotation axis under the drive of an external force, so that the first extrusion part gradually approaches the second extrusion part. Until the second extrusion part cooperates with the first extrusion part to squeeze the locking ring to the clamping seam, the second arm generates elastic deformation, so as to have a driving force that tends to drive the first extrusion part away from the second extrusion part.

4. The knotter system according to claim 3, characterized in that, The first extrusion arm has an initial position and an extrusion position; The suture locking unit further includes a push-pull member, which is at least partially disposed inside the mounting tube. The push-pull member is used to drive the first extrusion arm to move from the initial position to the extrusion position, or to remove the force applied to the first extrusion arm so that the first extrusion arm is reset from the extrusion position to the initial position under the elastic deformation drive of the second arm. Wherein, when the first extrusion arm is in the initial position, the first extrusion part is far away from the second extrusion part, and the second arm does not undergo elastic deformation; When the first extrusion arm is in the extrusion position, the first extrusion part is close to the second extrusion part, and the second arm undergoes elastic deformation. And / or, the push-pull member, limited by the inner wall of the mounting tube, presses the first extrusion arm along the first direction to move from the initial position to the extrusion position; Alternatively, the push-pull member, limited by the inner wall of the mounting tube, presses the first extrusion arm in a direction opposite to the first direction to move it from the initial position to the extrusion position.

5. The knotter system according to claim 4, characterized in that, A clearance space and a thread passage space are formed between the second arm and the mounting tube. The clearance space is connected to the thread passage space and is away from the second extrusion part. The mounting tube has a first thread passage hole, and the second arm has a second thread passage hole. The thread passage space is connected between the first thread passage hole and the second thread passage hole. The sewing thread passing through the locking ring extends out of the mounting tube through the second thread passage hole, the thread passage space and the first thread passage hole in sequence. The stitch locking unit further includes a cutter, which is at least partially located within the clearance space and moves synchronously with the push-pull member, and the end of the push-pull member that is close to the first compression part in the first direction passes over the blade of the cutter. Wherein, the push-pull member can reach the first position, the second position and the third position in sequence along the first direction. When the push-pull member is in the first position, the first extrusion arm is in the initial position, the second arm does not produce elastic deformation, and the blade of the cutter is located in the clearance space and away from the line space. When the push-pull member is in the second position, the first extrusion arm is in the extrusion position, the second arm undergoes elastic deformation, and the blade of the cutter is located within the clearance space and close to the line-passing space. When the push-pull member is in the third position, the first extrusion arm is in the extrusion position, the second arm undergoes elastic deformation, and the blade of the cutter is located in the thread passage space and cuts the thread passing through the thread passage space. And / or, the push-pull member includes a first connecting rod portion, a push-pull portion, and a snap-fit ​​portion, wherein the push-pull portion and the snap-fit ​​portion are respectively connected to the same end of the first connecting rod portion, the push-pull portion is used to press the first extrusion arm to move from the initial position to the extrusion position, the cutter is snapped with the snap-fit ​​portion and confined between the snap-fit ​​portion and the inner wall of the mounting tube; The cutter and one of the locking parts have a first protrusion, and the other of the cutter and the locking part have a first slot, wherein the first protrusion and the first slot are fitted together.

6. The knotter system according to any one of claims 3-5, characterized in that, The second arm includes a first segment, a second segment, and a third segment. The first segment extends away from the first direction and connects the first rotating part and the second segment. The second segment extends in a direction perpendicular to the axis of rotation and away from the first extrusion arm and connects the first segment and the third segment. The third segment extends in the first direction and connects the second segment and the second extrusion part. During the process where the first arm moves the first extrusion part closer to the second extrusion part under the action of external force, at least one of the first segment, the second segment and the third segment undergoes elastic deformation. And / or, the first segment is connected between the first rotating part and the second segment in a wavy or straight line shape; And / or, the second segment is connected between the first segment and the third segment in a wavy, C-shaped, V-shaped, or straight line shape, and the opening of the C-shaped or V-shaped second segment faces the first direction or is away from the first direction; And / or, the third segment is connected between the second extrusion section and the second segment in a wavy or straight line shape.

7. The knotter system according to any one of claims 3-5, characterized in that, The first extrusion part is toothed, and the second extrusion part is grooved, with the extension direction of the grooved second extrusion part being parallel to the rotation axis. The mounting tube has a fitting part corresponding to the second extrusion part, and the fitting part is fitted and connected to the second extrusion part. And / or, the side of the first arm opposite to the second arm gradually tilts along the first direction from the first rotating part to the first pressing part.

8. The knotter system according to any one of claims 3-5, characterized in that, The extrusion member further includes a limiting end, which is connected to the end of the second extrusion part away from the second arm and covers the opening of the mounting tube. The limiting end is provided with a first limiting hole, which is used for the main body of the locking ring to pass through and for limiting the flange of the locking ring. The limiting end is integrally formed with the second extrusion arm; Alternatively, the limiting end, the second extrusion arm, and the first extrusion arm are integrally formed.

9. The knotter system according to any one of claims 2-5, characterized in that, The knotter also includes an operating unit connected to the end of the mounting tube away from the extruder, for driving the first extrusion arm to rotate along the rotation axis and approach the second extrusion arm, so that the second extrusion arm cooperates with the first extrusion arm to extrude the locking ring to the state of clamping the seam.

10. The knotter system according to claim 9, characterized in that, The operating unit includes a handle, a second limiting hole is formed inside the handle, a second slot is formed at the end of the mounting tube away from the extruder, the mounting tube passes through the handle, and the opposite slot walls of the second slot along the axial direction of the mounting tube are respectively limited to the end faces of the opposite ends of the second limiting hole, so that the mounting tube is limited and locked inside the handle. The operating unit also includes a wrench, which is rotatably connected to the handle. The end of the push-pull member of the stitch locking unit away from the extrusion member extends out of the mounting tube and is connected to the wrench. The wrench rotates relative to the handle to drive the push-pull member to extrude the first extrusion arm, or to remove the extrusion force on the first extrusion arm.

11. The knotter system according to claim 9, characterized in that, The operating unit includes a handle, and one end of the mounting tube away from the extruder is inserted into the handle along the axial direction of the mounting tube. The operating unit also includes a wrench, which is rotatably connected to the handle and universally connected to one end of the push-pull member of the stitch locking unit that extends out of the mounting tube via a ball joint. The wrench rotates relative to the handle, causing the ball joint and the push-pull member to move axially along the mounting tube to squeeze the first compression arm or remove the squeezing force on the first compression arm.

12. The knotter system according to claim 11, characterized in that, The wrench includes a connecting part, a second rotating part, and an operating part. The second rotating part is rotatably connected to the handle and is located between the connecting part and the operating part. The connecting part is universally connected to the ball head. The operating part extends out of the handle and, under the action of an external force, drives the wrench to rotate along the second rotating part, so that the connecting part drives the ball head and the push-pull member to move along the axial direction of the mounting tube. The ball head component includes a ball head and a second connecting rod portion, wherein the opposite ends of the second connecting rod portion are respectively connected between the ball head and one end of the push-pull component that extends out of the mounting tube; 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 to enter the limiting groove and the second 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. And / or, the handle is configured to form a sliding cavity located in the direction of movement of the push-pull member away from the extrusion member; The knotter also includes a limiting member, which is connected between the ball head and the 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 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 and the push-pull member can be integrally formed; Alternatively, the limiting member and the ball head member are integrally formed.

13. The knotter system according to claim 11, characterized in that, The knotter includes an elastic element disposed inside the handle and connected between the wrench and the handle, for driving the handle to rotate so as to drive the push-pull member to remove the compression on the first compression arm; Wherein, the elastic element drives the handle to rotate by pulling force so as to drive the push-pull member to remove the compression on the first compression arm. During the process of the wrench rotating relative to the handle and driving the push-pull member to compress the first compression arm, the elastic element is stretched within the elastic deformation range. Alternatively, the elastic element drives the handle to rotate under pressure, thereby causing the push-pull member to remove the pressure on the first compression arm. During the process of the wrench rotating relative to the handle and causing the push-pull member to compress the first compression arm, the elastic element is compressed within its elastic deformation range.

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