Suture locking unit, knotter and system

Abstract

The invention discloses a suture locking unit, a knotter and a system. In the suture locking unit, a rigid first extrusion arm is rotatably connected with a mounting pipe along a rotating axis perpendicular to the axial direction of the mounting pipe, so that the first extrusion arm has better structural strength, is not easy to deform, and can keep the precision after being repeatedly used; an elastic second extrusion arm is connected with the first extrusion arm at the position close to the rotating axis, and the second extrusion arm reversely crosses the rotating axis after extending by a certain distance in the direction away from the first direction, so that the second extrusion arm is prolonged, and only small elastic deformation generated by the second extrusion arm exists; the extrusion piece is arranged on the first extrusion arm, so that irreversible elastic deformation of the second extrusion arm is avoided, the second extrusion arm is helped to reset to drive the first extrusion arm to reset, the extrusion piece can be repeatedly used to effectively extrude different locking rings, and the extruded locking rings can effectively lock penetrating sutures. The problem of operation failure caused by separation of the suture from the lock ring is avoided.

Description

Technical Field

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

[0002] For surgeries involving suturing, after completing the suturing of tissues, the sutures need to be knotted. In the prior art, the locking ring provided on the surgical suture is squeezed by using the extrusion structure of the knotter so that at least part of the inner wall of the locking ring fits and clamps the suture, and then the excess suture on the proximal side of the locking ring is cut off, thereby completing the operation.

[0003] Knotters usually need to be reused, but after being used once in surgery, the extrusion structure of existing knotters will undergo irreversible deformation, making it impossible to reset. This irreversible deformation makes it impossible for the knotter to effectively squeeze the locking ring in subsequent uses, resulting in the suture not being effectively locked, and then there is a problem that the suture is separated from the locking ring, causing the suture of the tissue to not fit tightly, resulting in surgical failure. In short, the lack of durability and reliability of the knotter limits its effectiveness in surgeries that require multiple uses. Summary of the invention

[0004] The main purpose of the present application is to provide a suture locking unit, a knotter and a system to solve the problem in the prior art that the extrusion structure has irreversible deformation, resulting in the inability to effectively extrude the locking ring.

[0005] In one aspect, the present application provides a suture locking unit, the suture locking unit comprising:

[0006] Installation pipe;

[0007] An extrusion member, wherein the extrusion member is at least partially disposed in the mounting tube, the extrusion member comprises 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 reverse direction;

[0008] Among them, the first squeezing arm and the second squeezing arm are both rigid structures, and the first squeezing arm can rotate along the rotation axis and approach the second squeezing arm under the action of external force. In the process of the second squeezing arm cooperating with the first squeezing arm to squeeze the locking ring to a state of clamping the suture, the part of the second squeezing arm close to the rotation axis produces elastic deformation.

[0009] Further, 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 2-5;

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

[0011] The second extrusion arm comprises a second arm and a second extrusion portion, and the second arm is connected between the second extrusion portion and an end of the first rotating portion away from the first arm;

[0012] Among them, the first arm drives the first extrusion part to rotate synchronously along the rotation axis under the drive of 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 clamp the suture, and the second arm produces elastic deformation to have a driving force tending to drive the first extrusion part away from the second extrusion part.

[0013] Further, the first squeezing arm has an initial position and a squeezing position;

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

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

[0016] When the first extrusion arm is in the extrusion position, the first extrusion portion is close to the second extrusion portion, and the second arm generates elastic deformation;

[0017] And / or, the push-pull member, under the limitation of the inner wall of the mounting tube, squeezes the first squeezing arm along the first direction to move from the initial position to the squeezing position;

[0018] Alternatively, the push-pull member, under the limitation of the inner wall of the mounting tube, squeezes the first squeezing arm in a direction opposite to the first direction to move from the initial position to the squeezing position.

[0019] Further, an avoidance space and a wire passing space are formed between the second arm and the mounting tube, the avoidance space is connected to the wire passing space and is away from the second extrusion portion, the mounting tube has a first wire passing hole, the second arm has a second wire passing hole, the wire passing space is connected between the first wire passing hole and the second wire passing hole, and the suture passing through the locking ring sequentially passes through the second wire passing hole, the wire passing space and the first wire passing hole and extends out of the mounting tube;

[0020] The suture locking unit further comprises a cutter, wherein the cutter is at least partially located in the avoidance space and moves synchronously with the push-pull member, and an end of the push-pull member close to the first extrusion portion along the first direction passes over the blade of the cutter;

[0021] The push-pull member can sequentially reach a first position, a second position and a third position along the first direction. When the push-pull member is in the first position, the first squeezing arm is in the initial position, the second arm does not produce elastic deformation, and the blade of the cutter is located in the avoidance space and away from the line-crossing space.

[0022] When the push-pull member is in the second position, the first extrusion arm is in the extrusion position, the second arm is elastically deformed, and the blade of the cutter is located in the avoidance space and close to the wire-passing space;

[0023] When the push-pull member is in the third position, the first squeezing arm is in the squeezing position, the second arm is elastically deformed, the blade of the cutter is located in the thread passing space, and the suture passing through the thread passing space is cut off;

[0024] And / or, the push-pull member includes a first connecting rod portion, a push-pull portion and a clamping portion, the push-pull portion and the clamping portion are respectively connected to the same end of the first connecting rod portion, the push-pull portion is used to squeeze the first squeezing arm from the initial position to the squeezing position, the cutter is clamped with the clamping portion, and is limited to be located between the clamping portion and the inner wall of the mounting tube;

[0025] Among them, one of the cutter and the clamping part has a first boss, and the other of the cutter and the clamping part has a first slot, and the first boss is adaptively clamped with the first slot.

[0026] Further, the second arm includes a first section, a second section and a third section, the first section extends away from the first direction and is connected between the first rotating portion and the second section, the second section extends in a direction perpendicular to the rotation axis and away from the first extrusion arm, and is connected between the first section and the third section, and the third section extends in the first direction and is connected between the second section and the second extrusion portion;

[0027] Wherein, when the first arm drives the first extrusion portion to approach the second extrusion portion under the action of an external force, at least one of the first section, the second section and the third section undergoes elastic deformation;

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

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

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

[0031] Further, the first extrusion portion is tooth-shaped, the second extrusion portion is groove-shaped, and the extension direction of the groove-shaped second extrusion portion is parallel to the rotation axis;

[0032] Wherein, the mounting tube is formed with a fitting portion corresponding to the second extrusion portion structure, and the fitting portion is fitted and connected with the second extrusion portion;

[0033] And / or, a side of the first arm facing away from the second arm is gradually inclined along the first direction from the first rotating portion to the first pressing portion.

[0034] Further, the extrusion piece further comprises a limiting end portion, the limiting end portion is connected to an end of the second extrusion portion away from the second arm and covers the opening of the mounting tube, the limiting end portion is provided with a first limiting hole, the first limiting hole is used for the main body of the lock ring to pass through, and limits the flange portion of the lock ring;

[0035] Wherein, the limiting end portion and the second extrusion arm are integrally formed;

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

[0037] On the other hand, the present application further provides a knotter, the knotter comprising any one of the suture locking units described above; and

[0038] An operating unit is connected to one end of the mounting tube away from the extrusion member, 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 squeeze the locking ring to a state of clamping the suture.

[0039] Further, the operating unit includes a handle, a second limiting hole is formed in the handle, a second clamping groove is formed at one end of the mounting tube away from the extrusion member, the mounting tube is passed through the handle, and the groove walls of the second clamping groove opposite to each other along the axial direction of the mounting tube are respectively limited by the end faces of opposite ends of the second limiting hole, so that the mounting tube is limitedly clamped in the handle;

[0040] The operating unit also includes a wrench, which is rotatably connected to the handle, and an end of the push-pull member of the suture 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 remove the extrusion force on the first extrusion arm.

[0041] Further, the operating unit comprises a handle, and one end of the mounting tube away from the extrusion member is inserted into the handle in a limited position along the axial direction of the mounting tube;

[0042] The operating unit also includes a wrench, which is rotatably connected to the handle and is universally connected to one end of the push-pull member of the suture locking unit that extends out of the mounting tube through a ball head member. The wrench rotates relative to the handle to drive the ball head 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] Further, the wrench comprises a connecting portion, a second rotating portion and an operating portion, the second rotating portion is rotatably connected to the handle and is located between the connecting portion and the operating portion, the connecting portion is universally connected to the ball head member, the operating portion extends out of the handle and drives the wrench to rotate along the second rotating portion under the action of an external force, so that the connecting portion drives the ball head member and the push-pull member to move axially along the mounting tube;

[0044] Wherein, the ball head member comprises a ball head portion and a second connecting rod portion, and opposite ends of the second connecting rod portion are respectively connected between the ball head portion and one end of the push-pull member extending out of the mounting tube;

[0045] The connecting portion is structured to form a swing groove, a limit groove and a notch, wherein the notch is respectively connected to the same side of the swing groove and the limit groove, and is used for the ball head to enter the limit groove, and for the second connecting rod to enter the swing groove, the swing groove is connected to the limit groove, and the swing groove is V-shaped in the direction away from the limit groove.

[0046] And / or, the handle structure is formed with a sliding cavity, and the sliding cavity is located in the movement direction of the push-pull member away from the extrusion member;

[0047] The knotter further comprises a limiting member, which is connected between the ball head member and one end of the push-pull member extending out of the mounting tube and is slidably limited in the sliding cavity along the moving direction of the push-pull member;

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

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

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

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

[0052] Further, the knotter includes an elastic member, which is arranged in the handle and connected between the wrench and the handle, and is used to drive the handle to rotate so as to drive the push-pull member to remove the squeeze on the first squeezing arm;

[0053] The elastic member drives the handle to rotate by pulling force to drive the push-pull member to remove the extrusion of the first extrusion arm. In the process in which the wrench rotates relative to the handle to drive the push-pull member to extrude the first extrusion arm, the elastic member is stretched within the elastic deformation range.

[0054] Alternatively, the elastic member drives the handle to rotate through pressure to drive the push-pull member to remove the squeezing of the first squeezing arm. In the process of the wrench rotating relative to the handle to drive the push-pull member to squeeze the first squeezing arm, the elastic member is squeezed within the elastic deformation range.

[0055] In another aspect, the present application further provides a knotter system, the knotter system comprising any of the above-mentioned knotters, and

[0056] A thread hook, the thread hook comprises a hook and a threading ring, the hook comprises a hook portion and a pulling portion, the pulling portion is connected to one end of the hook portion, the pulling portion passes through a locking ring and is sleeved on the threading ring, the threading ring is used for passing a suture, and after removing the threading ring, the part of the suture is passed through the pulling portion;

[0057] Wherein, the locking ring passing through the pulling part is limited to be 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 aperture of the limiting hole and larger than the aperture of the locking ring, so that the locking ring passing through the pulling portion is limited to be located between the hook portion and the threading ring;

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

[0060] In the suture locking unit of the present application, the first squeezing arm of the rigid structure is rotatably connected to the mounting tube along a rotation axis perpendicular to the axial direction of the mounting tube, and extends in the mounting tube along a first direction, so that the first squeezing arm is limitedly connected in the mounting tube along the axial direction of the mounting tube, thereby making the first squeezing arm have good structural strength, not easy to deform, and can maintain accuracy even after repeated use; and the second squeezing arm is connected to the first squeezing arm near the rotation axis, and the second squeezing arm extends a certain distance away from the first direction and then crosses the rotation axis in the reverse direction, so that the second squeezing arm is relative to the first The length of the squeezing arm is effectively extended, and in the process of the first squeezing arm being squeezed and rotated, only the second squeezing arm produces a smaller elastic deformation to avoid the second squeezing arm from producing irreversible elastic deformation, and the part of the second squeezing arm extending a certain distance away from the first direction can also share a certain pressure, thereby helping to reset the second squeezing arm and drive the first squeezing arm to rotate away from the second squeezing arm, so that the squeezing member can be reused under the action of external force to effectively squeeze different locking rings, thereby ensuring that the squeezed locking ring can effectively lock the passed suture, avoiding the problem of surgical failure due to the suture detaching from the locking ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0062] Figure 1It is a schematic diagram of the structure of a suture locking unit in one embodiment disclosed in the present application.

[0063] Figure 2 It is an exploded schematic diagram of a suture locking unit in one embodiment disclosed in the present application.

[0064] Figure 3 It is a schematic diagram of the structure of the installation tube in one embodiment disclosed in the present application.

[0065] Figure 4 It is a schematic diagram of the structure of an extrusion part in an embodiment disclosed in the present application.

[0066] Figure 5 -A is a cross-sectional view of a suture locking unit in an embodiment disclosed in the present application, in which the locking ring and suture are not shown, and the push-pull member is in the first position; Figure 5 -B Figure 5 -A shows the locking ring and suture in an initial state, and the push-pull member is in a first position; Figure 5 -C Figure 5 -B shows the locking ring and suture in a squeezed state, and the push-pull member is in a second position; Figure 5 -D Figure 5 -C shows the locking ring in a squeezed state and the cut suture, and the push-pull member is in the third position.

[0067] Figure 6 It is an overall schematic diagram of a knotter in one embodiment disclosed in the present application.

[0068] Figure 7 This is a schematic structural diagram of the first handle in an embodiment disclosed in the present application.

[0069] Figure 8 It is a schematic structural diagram of the second handle in one embodiment disclosed in the present application.

[0070] Fig. 9 It is a cross-sectional view of a knotter in one embodiment disclosed in the present application, and the figure shows that the push-pull member is in a first position.

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

[0072] Fig.11 This is a schematic structural diagram of the first handle in another embodiment disclosed in the present application.

[0073] Fig.12 This is a schematic diagram of an explosion of a knotter in one embodiment disclosed in the present application.

[0074] Fig.13It is a schematic diagram of the structure of a wrench in one embodiment disclosed in the present application.

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

[0076] Fig.15 for Fig.14 Schematic diagram from another perspective.

[0077] Fig.16 It is an overall schematic diagram of a knotter system in one embodiment disclosed in the present application.

[0078] Fig.17 -A is an overall schematic diagram of a thread hooking device in one embodiment disclosed in the present application; Fig.17 -B is a schematic diagram of the connection between the wire hook and the locking ring in an embodiment disclosed in the present application.

[0079] Fig.18 -A is a schematic diagram of the coordination of a thread hook, a locking ring, a suture and a suture locking unit in one embodiment disclosed in the present application, wherein the threading ring is hidden in the figure; Fig.18 -B is a cross-sectional schematic diagram of the coordination of the thread hook, locking ring, suture and suture locking unit in one embodiment disclosed in the present application.

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

[0081] Suture locking unit 100, mounting tube 10, fitting portion 11, first thread hole 12, second clamping groove 13, extrusion member 20, first extrusion arm 21, first rotating portion 211, first arm 212, first extrusion portion 213, inclined surface 214, second extrusion arm 22, second arm 221, first section 2211, second section 2212, third section 2213, second thread hole 2214, second extrusion portion 222, extrusion cavity 23, limiting end portion 24, first limiting hole 241, rotating shaft 30, rotation axis 31, push-pull member 40, first connecting rod portion 41, push-pull portion 42, clamping portion 43, first boss 431, first limiting surface 432, second limiting surface 433, avoidance space 50, thread space 60, cutter 70, blade 71, first clamping groove 72, first direction X, locking ring 2000, main body 2100, flange portion 2200, suture 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 column 2107, limiting cavity 2108, wrench 220, connecting portion 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 part 310, second connecting rod part 320, limit part 400, elastic part 500, fixing part 600, rotating shaft 700, knotter system 4000, thread hook 4100, hook and pull part 4110, hook part 4111, pulling part 4112, threading ring 4120, wire groove 4211. DETAILED DESCRIPTION

[0082] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0083] See also Figure 1-3 As shown, on the one hand, the present application provides a suture locking unit 100. The suture locking unit 100 includes a mounting tube 10, an extrusion member 20 and a rotating shaft 30. The extrusion member 20 is at least partially disposed in the mounting tube 10, and is rotatably connected to the mounting tube 10 through the rotating shaft 30. Wherein, the extrusion member 20 is used to squeeze the locking ring 2000 under the action of an external force, so that the inner wall of the extrusion part of the squeezed locking ring 2000 fits to lock the suture 3000 passing through the locking ring 2000, thereby achieving the fixation of the excess suture 3000 after the tissue suturing is completed, so as to avoid this part of the excess suture 3000 from returning to the sutured tissue, resulting in the sutured tissue not being able to fit tightly, causing the tissue separation at the sutured part, and leading to the failure of the operation.

[0084] Further, the rotating shaft 30 is fixedly connected to the mounting tube 10, and the extrusion piece 20 is rotatably connected to the rotating shaft; or the rotating shaft 30 is rotatably connected to the mounting tube 10, and the extrusion piece 20 is fixedly connected or rotatably connected to the rotating shaft 30. 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 may be a circular tube or an elliptical tube, so that the suture locking unit 100 can enter and exit the patient's body. According to requirements, the outer wall of the mounting tube 10 may also be a rectangular tube or other structure that is convenient for entering and exiting the patient's body, which is not limited here.

[0086] For further information, see 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 through 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 and then crosses the rotation axis 31 in the reverse direction, so that the length of the second extrusion arm 22 relative to the first extrusion arm 21 is effectively extended, and in the process of the first extrusion arm 21 being extruded and rotated, only a small elastic deformation of the second extrusion arm 22 is generated, thereby effectively preventing the second extrusion arm 22 from generating irreversible elastic deformation, and the second extrusion arm 22 extends a certain distance away from the first direction X. The separated part can also share a certain amount of pressure, so that the first squeezing arm 21 is more stable during the squeezing and resetting process, thereby helping the second squeezing arm 22 to reset, and drive the first squeezing arm 21 to rotate away from the second squeezing arm 22, thereby realizing the resetting of the second squeezing arm 22; thereby, the squeezing member 20 can be reused under the action of external force to effectively squeeze different locking rings 2000, and thereby ensure that the squeezed locking ring 2000 can effectively lock the passed suture 3000, thereby avoiding the problem of surgical failure caused by the suture 3000 detaching from the locking ring 2000.

[0087] Furthermore, the first extrusion arm 21 is a rigid structure and is thicker than the second extrusion arm 22, and the ratio of the thickness of the first extrusion arm 21 to the thickness of the second extrusion arm 22 is between 2-5. For example, when the thickness of the second extrusion arm 22 is 0.5 mm, the thickness of the second extrusion arm 22 is between 1 mm and 2.5 mm, and 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 easy to deform, and can maintain accuracy even after repeated use; in addition, it is also convenient to control the overall size of the extrusion member 20, so as to facilitate the installation of the extrusion member 20 into the mounting tube 10.

[0088] The second pressing arm 22 is also a rigid structure, and the first pressing arm 21 can rotate along the rotation axis 31 and approach the second pressing arm 22 under the action of external force, until the second pressing arm 22 cooperates with the first pressing arm 21 to squeeze the locking ring 2000 to a state of clamping the suture 3000, and the part of the second pressing arm 22 close to the rotation axis 31 produces elastic deformation.

[0089] Furthermore, an extrusion cavity 23 is formed between the first extrusion arm 21 and the second extrusion arm 22, and the extrusion cavity 23 is used to accommodate the locking ring 2000. When the first extrusion arm 21 gradually approaches the second extrusion arm 22 under the action of external force, the locking ring 2000 located in the extrusion cavity 23 is squeezed, so that the squeezed locking ring 2000 clamps and locks the passing suture 3000.

[0090] For further information, see Figure 4 As shown, the first extrusion arm 21 includes a first rotating portion 211, a first arm 212 and a first extrusion portion 213. The first arm 212 is connected between the first rotating portion 211 and the first extrusion portion 213, and the first rotating portion 211 is connected to the mounting tube 10 along the rotation axis 31 through the rotating shaft 30. So that the first extrusion arm 21 can rotate relative to the mounting tube 10 along the rotation axis 31, and the extrusion member 20 is installed in a limited position in the mounting tube 10 through 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 an end of the first rotating portion 211 away from the first arm 212. The second extrusion portion 222 is spaced apart from and opposite to the first extrusion portion 213 to form the extrusion cavity 23.

[0092] Among them, the first arm 212, driven by an external force, 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 cavity size of the extrusion cavity 23, until the second extrusion part 222 cooperates with the first extrusion part 213 to squeeze the locking ring 2000 to clamp the suture 3000, thereby achieving the fixation of the suture 3000 passing through the locking ring 2000.

[0093] In the process of the first squeezing arm 21 rotating under the action of external force to make the first squeezing part 213 approach the second squeezing part 222, the second arm 221 produces elastic deformation, thereby having a driving force tending to drive the first squeezing part 213 away from the second squeezing part 222, and in the process of gradually withdrawing the external force applied to the first squeezing arm 21, the first squeezing arm 21 is gradually reset under the action of the elastic deformation force of the second squeezing arm 22, so that the first squeezing part 213 is away from the second squeezing part 222, and the second squeezing arm 22 is elastically reset.

[0094] During the process of the first extrusion arm 21 rotating to make the first extrusion part 213 approach the second extrusion part 222, only the second arm 221 produces elastic deformation, so that the first extrusion part 213 and the second extrusion part 222 can be precisely matched to accurately extrude the locking ring 2000 entering the extrusion cavity 23, so that the suture 3000 through which the extruded locking ring 2000 can pass can be effectively clamped.

[0095] For further information, see Figure 5 As shown, the first squeezing arm 21 has an initial position and a squeezing position. When the first squeezing arm 21 is at the initial position, the first squeezing arm 21 is not acted upon by an external force. At this time, the first squeezing portion 213 is away from the second squeezing portion 222, the cavity volume of the squeezing cavity 23 is the largest, and the second arm 221 does not produce elastic deformation. When the first squeezing arm 21 is at the squeezing position, the first squeezing arm 21 rotates along the rotation axis 31 under the action of an external force. At this time, the first squeezing portion 213 approaches the second squeezing portion 222, the cavity volume of the squeezing cavity 23 is reduced, and the locking ring 2000 located in the squeezing cavity 23 is squeezed to effectively lock the suture 3000 passing through, and the elastic deformation produced by the second arm 221 reaches the maximum.

[0096] The locking ring 2000 has an initial state and an extrusion 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 extrusion 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] See also Figure 2 , 5 As shown, the suture locking unit 100 also includes a push-pull member 40, which is at least partially disposed in the mounting tube 10, and is used to drive the first squeezing arm 21 to move from the initial position to the squeezing position; or to remove the force applied to the first squeezing arm 21 so that the first squeezing arm 21 is reset from the squeezing 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 squeeze the first extrusion arm 21. At this time, the first extrusion portion 213 is away from the second extrusion portion 222, the cavity volume of the extrusion cavity 23 is the largest, and the second arm 221 does not produce elastic deformation. The locking ring 2000 in the initial state or the extrusion state can freely enter and exit the extrusion cavity 23.

[0099] When the first extrusion arm 21 is in the extrusion position, the push-pull member 40 squeezes the first extrusion arm 21. At this time, the first extrusion portion 213 is close to the second extrusion portion 222, the cavity volume of the extrusion cavity 23 is reduced, the second arm 221 produces elastic deformation, and the locking ring 2000 in the extrusion state is clamped in the extrusion cavity 23.

[0100] Furthermore, the push-pull member 40 is limited by the inner wall of the mounting tube 10 , and squeezes the first squeezing arm 21 along the first direction X to move from the initial position to the squeezing position.

[0101] The rotating shaft 30 is connected inside the mounting tube 10 and is located at the middle position of the radial cross section of the mounting tube 10 , so that the rotating shaft 30 is spaced apart from the corresponding inner wall of the mounting tube 10 along 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 away from the side of the first extrusion portion 213 and close to the corresponding inner wall of the mounting tube 10, and the extrusion member 20 moves along the first direction X between the inner wall of the mounting tube 10 close to the first extrusion arm 21 and away from the second extrusion arm 22 and the first extrusion arm 21, so as to squeeze the first arm 212 so that the first extrusion arm 21 rotates relative to the rotating shaft 30, until the first extrusion portion 213 is close to the second extrusion portion 222, and squeezes the locking ring 2000 located in the extrusion cavity 23 to the extrusion state.

[0103] Alternatively, the push-pull member 40, under the limit of the inner wall of the mounting tube 10, presses the first extrusion arm 21 from the initial position to the extrusion position in a direction opposite to the first direction X. This allows the first extrusion arm 21 to rotate and drive the first extrusion portion 213 to gradually approach the second extrusion portion 222, until the second extrusion portion 222 cooperates with the first extrusion portion 213 to squeeze the lock ring 2000 to the extrusion 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 portion 222, and the extrusion end is a wedge-shaped structure, and the side of the first extrusion arm 21 away from the first extrusion portion 213 gradually tilts upward in a direction opposite to the first direction X to form an inclined surface. 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 surface to make the first extrusion arm 21 rotate and drive the first extrusion portion 213 to approach the second extrusion portion 222, so that with the cooperation of the second extrusion portion 222, the locking ring 2000 located in the extrusion cavity 23 is squeezed so that the locking ring 2000 locks the passed suture 3000.

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

[0106] In the process where the first arm 212 drives the first extruding portion 213 to approach the second extruding portion 222 under the action of an external force, at least one of the first section 2211, the second section 2212 and the third section 2213 is elastically deformed. That is to say, in the process where the push-pull member 40 squeezes the first arm 212 to rotate the first extruding arm 21 along the rotation axis 31 and drives the first extruding portion 213 to approach the second extruding portion 222, the first section 2211 may be elastically deformed, or the second section 2212 may be elastically deformed, or the third section 2213 may be elastically deformed, or the first section 2211 and the second section 2212 may be elastically deformed, or the first section 2211 and the third section 2213 may be elastically deformed, or the second section 2212 and the third section 2213 may be elastically deformed, or the first section 2211, the second section 2212 and the third section 2213 may be elastically deformed, or the first section 2211, the second section 2212 and the third section 2213 may be elastically deformed.

[0107] Furthermore, the first section 2211 is connected between the first rotating part 211 and the second section 2212 in a wavy line or a straight line, thereby effectively increasing the length of the first section 2211 to increase the deformation amount of the elastic deformation of the first section 2211, and avoiding the first section 2211 from extending too long away from the first direction X, resulting in an increase in the length of the mounting tube 10, so as to control the overall volume of the suture locking unit 100.

[0108] The second section 2212 is connected between the first section 2211 and the third section 2213 in a wavy line shape, a C shape, a V shape, or a straight line shape, thereby effectively increasing the length of the second section 2212 to increase the deformation amount of the elastic deformation of the second section 2212, and avoiding the second section 2212 from extending too long away from the first direction X, resulting in an increase in the length of the mounting tube 10, so as to control the overall volume of the suture locking unit 100.

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

[0110] The third section 2213 is connected between the second extrusion portion 222 and the second section 2212 in a wavy line or a straight line, so that the length of the third section 2213 can be effectively increased to increase the deformation amount of the third section 2213 that undergoes elastic deformation.

[0111] Furthermore, the first extrusion portion 213 is tooth-shaped, and the second extrusion portion 222 is groove-shaped, so that the first extrusion portion 213 and the second extrusion portion 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, and further facilitating the control of the amount and volume of implants such as the locking ring 2000 and sutures 3000, thereby increasing the efficiency of wound healing of patients and shortening the time for patients to recover after surgery.

[0112] For further information, please refer to Figure 1-4 As shown, the extending direction of the groove-shaped second extrusion part 222 is parallel to the rotation axis 31, and the mounting tube 10 is formed with an interlocking part 11 corresponding to the second extrusion part 222, and the interlocking part 11 is interlocked and connected with the second extrusion part 222. Therefore, the second extrusion part 222 and the mounting tube 10 are mutually limited in the axial direction of the mounting tube 10, and are fixedly connected by welding or bonding, so that the vacancy of the interlocking part 11 can be filled by the outer side of the second extrusion part 222, and the length of the mounting tube 10 can be effectively controlled. Further, under the limiting action of the rotating shaft 30, the extrusion member 20 and the mounting tube 10 are stably connected, so that the second extrusion part 222 will not be affected by the elastic deformation of the second arm 221, and then the second extrusion part 222 can remain relatively still with the mounting tube 10, so that the first extrusion part 213 approaches the second extrusion part 222 to squeeze the lock ring 2000 to the extrusion state.

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

[0114] By setting the inclined surface 214 to gradually incline from the first rotating part 211 to the first extrusion part 213 along the first direction X, the travel of the first arm 212 in contact with and being extruded by the push-pull member 40 can be effectively extended, thereby ensuring that the force applied to the push-pull member 40 acts smoothly on the first arm 212, thereby preventing the first extrusion arm 21 from rotating too quickly, resulting in excessive force reacting on the second arm 221 to cause the second arm 221 to produce elastic deformation, causing the second arm 221 to easily fatigue.

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

[0116] For further information, please refer to Figure 5 As shown in FIG. 2B , the locking ring 2000 includes a main body 2100 and a flange 2200 . The flange 2200 is located at one end of the main body 2100 and protrudes outwardly along the radial direction of the main body 2100 .

[0117] The limiting end portion 24 is provided with a first limiting hole 241, and the first limiting hole 241 is used for the main body 2100 of the locking ring 2000 to pass through, and to limit the flange portion 2200 of the locking ring 2000, so that the locking ring 2000 can be inserted into a designated position in the extrusion cavity 23, so as to accurately extrude the locking ring 2000, so that the locking ring 2000 squeezed to the extruded state can effectively lock the passed suture 3000.

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

[0119] For further information, please refer to Figure 5 As shown in FIG. 2A , an escape space 50 and a wire passing space 60 are formed between the second arm 221 and the mounting tube 10 . The escape space 50 is connected to the wire passing space 60 and is away from the second extruding portion 222 .

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

[0121] Please refer to Figure 2 , 5 As shown, the suture locking unit 100 also includes a cutter 70, which is at least partially located in the avoidance space 50 and moves synchronously with the push-pull member 40, and is used for cutting the suture 3000 located in the thread passing space 60 after the first extrusion portion 213 and the second extrusion portion 222 squeeze the locking ring 2000 to the extrusion position, thereby completing the locking and cutting of the suture 3000.

[0122] Furthermore, one end of the push-pull member 40 close to the first extrusion portion 213 along the first direction X passes over the blade 71 of the cutter 70, so that one end of the push-pull member 40 pressing the first arm 212 is located in front of the cutting blade 71 along the first direction X, so that the push-pull member 40 can squeeze the first arm 212 to drive the first extrusion portion 213 and the second extrusion portion 222 to cooperate to move the locking ring 2000 to the extrusion position, and then cut off the excess suture 3000.

[0123] Furthermore, the push-pull member 40 can sequentially reach the first position, the second position and the third position along the first direction X. Figure 5-B shows that 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 cavity 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 avoidance space 50 and away from the passing line space 60.

[0124] Please refer to 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 cavity 23 is in an extrusion state, the second arm 221 produces elastic deformation, and the blade 71 of the cutter 70 is located in the avoidance space 50 and close to the passing line space 60.

[0125] Please refer to Figure 5 -D shows that 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 cavity 23 is still in the extrusion state, the second arm 221 produces elastic deformation, and the blade 71 of the cutter 70 is located in the thread passing space 60 and cuts off the suture 3000 passing through the thread passing space 60.

[0126] For further information, please refer to Figure 2 , 5 As shown in Figure 1-B, the push-pull member 40 includes a first connecting rod portion 41, a push-pull portion 42 and a clamping portion 43. The push-pull portion 42 and the clamping portion 43 are respectively connected to the same end of the first connecting rod portion 41. The first connecting rod portion 41 is movably limited in 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 clamping portion 43 to move synchronously under the drive of an external force.

[0127] The push-pull portion 42 is used to press the first extrusion arm 21 to move from the initial position to the extrusion position, so that the first extrusion portion 213 is close to the second extrusion portion 222 and the lock ring 2000 located in the extrusion cavity 23 is pressed from the initial state to the extrusion state. The cutter 70 is clamped with the clamping portion 43 and is limited between the clamping 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 suture 3000 passing through the lock ring 2000 that is squeezed to the extrusion state.

[0128] See also Figure 3 , 7 As shown, one of the cutter 70 and the engaging portion 43 has a first boss 431 , and the other of the cutter 70 and the engaging portion 43 has a first slot 72 , and the first boss 431 and the first slot 72 are adaptively engaged.

[0129] Furthermore, the clamping portion 43 includes adjacent first limiting surfaces 432 and second limiting surfaces 433, the first limiting surfaces 432 facing away from the push-pull portion 42, the second limiting surfaces 433 facing toward the push-pull portion 42, the first boss 431 being arranged on the first limiting surfaces 432, the cutter 70 having the first clamping groove 72, the first clamping groove 72 being limitedly clamped with the first boss 431, and the end of the cutter 70 away from its blade 71 abuts against the second limiting surface 433, and the side close to the first boss 431 abuts against the first limiting surface 432, and the side away from the first limiting surface 432 is limitedly clamped against the inner wall of the mounting tube 10, so that the cutter 70 is limitedly clamped between the clamping portion 43 and the corresponding inner wall of the mounting tube 10, and the limit clamping of the cutter 70 can be achieved without setting a fixed structure, so as to facilitate the assembly of the cutter 70 or the replacement of the cutter 70.

[0130] See also Figure 6 As shown, on the other hand, the present application further provides a knotter 1000. The knotter 1000 includes the above-mentioned 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-mentioned embodiments, which will not be repeated here.

[0131] Furthermore, the knotter 1000 further includes an operating unit 200. The operating unit 200 is fixedly connected to one end of the mounting tube 10 away from the extrusion member 20, and is used to drive the first extrusion arm 21 to rotate along the rotation axis 31 and approach the second extrusion arm 22, so that the second extrusion arm 22 cooperates with the first extrusion arm 21 to squeeze the locking ring 2000 to a squeezed state of clamping the suture 3000.

[0132] Further, in the embodiments of the present 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 an end of the first connecting rod portion 41 away from the push-pull portion 42, and is used to drive the push-pull member 40 to move between the first position, the second position and the third position under the action of an external force.

[0133] A second limiting hole is formed in the handle 210, and a second clamping groove 13 is formed at one end of the mounting tube 10 away from the extrusion member 20. The mounting tube 10 is passed through the handle 210, and the opposite groove walls of the second clamping groove 13 along the axial direction of the mounting tube 10 are respectively limited by the end faces at the opposite ends of the second limiting hole, so that the second clamping groove 13 is limitedly connected to the second limiting hole, thereby allowing the mounting tube 10 to be limitedly clamped in the handle 210.

[0134] For further information, see 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, the second handle 2104 is configured to form a second limiting groove 2105, and the first handle 2102 is connected to the second handle 2104 so that the first limiting groove 2103 and the second limiting groove 2105 are configured to form the second limiting hole.

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

[0136] Further, in the embodiments of the present application, please refer to Figure 6 , 11 As shown in FIG. 15 , the operating unit 200 includes a handle 210 and a wrench 220 . One end of the mounting tube 10 away from the extrusion member 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] Among them, one end of the mounting tube 10 extending into the handle 210 is threadedly connected to the fixing piece 600, and a limiting cavity 2108 is also provided in the handle 210. The fixing piece 600 is arranged in the limiting cavity 2108, so that the fixing piece 600 is limitedly clamped in the limiting cavity 2108 to achieve a fixed connection between the mounting tube 10 and the handle 210.

[0138] The wrench 220 is rotatably connected to the handle 210 and is universally connected to the end of the push-pull member 40 of the suture locking unit 100 extending out of the mounting tube 10 through the ball head member 300, so that the wrench 220 can adapt to the ball head member 300 to maintain axial movement along the mounting tube 10 during the rotation process, so as to avoid the ball head member 300 and / or the push-pull member 40 extending in the process of driving the push-pull member 40 to move in the axial direction of the mounting tube 10. The part protruding from the mounting tube 10 needs to produce a certain deformation before it can move along the axial direction of the mounting tube 10. Therefore, through the universal connection between the ball head component 300 and the wrench 220, and the connection with the end of the push-pull component 40 protruding from the mounting tube 10, the ball head component 300 and the push-pull component 40 can always keep moving along the axial direction of the mounting tube 10, thereby improving the smoothness of driving the push-pull component 40 to move along the axial direction of the mounting tube 10 and reducing the force required for driving.

[0139] For further information, see Fig.13 As shown, the wrench 220 includes a connecting portion 2210, a second rotating portion 2220 and an operating portion 2230. The second rotating portion 2220 is rotatably connected to the handle 210 through a rotating shaft 700 and is located between the connecting portion 2210 and the operating portion 2230; the connecting portion 2210 is universally connected to the ball head 300, and the operating portion 2230 extends out of the handle 210 and drives the wrench 220 to rotate along the second rotating portion 2220 under the action of an external force, so that the connecting portion 2210 drives the ball head 300 and the push-pull member 40 to move along the axial direction of the mounting tube 10.

[0140] The operating portion 2230 can cooperate with the handle 210 for medical personnel to hold, and the operating portion 2230 can be pulled or released to allow the wrench 220 to rotate relative to the handle 210 .

[0141] For further information, see Fig.12 As shown, the ball head member 300 includes a ball head portion 310 and a second connecting rod portion 320, and the opposite ends of the second connecting rod portion 320 are respectively connected between the ball head portion 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 keep moving along the axial direction of the mounting tube 10.

[0142] For further information, see Fig.13As shown, the connecting portion 2210 is structured to form a swing groove 2201, a limiting groove 2202 and a notch 2203. The notch 2203 is connected to the same side of the swing groove 2201 and the limiting groove 2202, and is used for the ball head 310 to enter the limiting groove 2202, and for the second connecting rod 320 to enter the swing groove 2201, so as to facilitate the assembly of the ball head 300 and the connecting portion 2210.

[0143] The swing groove 2201 is connected to the limit groove 2202, and the swing groove 2201 is V-shaped in the direction away from the limit groove 2202. The ball head 310 is arranged in the limit groove 2202, and the connecting rod passes through the swing groove 2201 and is connected to one end of the push-pull member 40 extending out of the mounting tube 10. By providing the V-shaped swing groove 2201 and the limit groove 2202, the ball head member 300 can always maintain axial movement in the mounting tube 10 when the push or pull force of the wrench 220 is applied to the push-pull member 40 to move between the first position, the second position and the third position, thereby preventing the push-pull member 40 from extending out of the mounting tube 10 and one end close to the wrench 220 from axially deflecting relative to the mounting tube 10 under the drive of the wrench 220, causing the push-pull member 40 to be squeezed and limited between the position where it extends out of the mounting tube 10 and the inner wall of the mounting tube 10, resulting in the push-pull member 40 not being smooth enough when switching between the first position, the second position and the third position, and causing irreversible deformation of the mounting tube 10 and the push-pull member 40.

[0144] For further information, see Figure 11-12 As shown in FIGS. 14 and 15 , the handle 210 is structured to form a sliding cavity 2106 , which is located in the movement direction of the push-pull member 40 away from the extrusion member 20 and is between the second limiting hole and the wrench 220 .

[0145] The knotter 1000 also includes a limit member 400, which is connected between the ball head member 300 and one end of the push-pull member 40 extending out of the mounting tube 10, and is slidably limited in 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, the push-pull member 40 and the ball head member 300 are connected, and the limit member 400 slides in the sliding cavity 2106 along the axial direction of the mounting tube 10, so that the push-pull member 40 can stably maintain the 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 squeezing arm 21.

[0146] Further, the position-limiting member 400, the push-pull member 40 and the ball head member 300 are detachably connected to facilitate the assembly of the ball head member 300 and the handle 210. Alternatively, the position-limiting member 400, the push-pull member 40 and the ball head member 300 are integrally formed to enhance the structural strength between the position-limiting member 400, the push-pull member 40 and the ball head member 300, and to simplify the assembly steps. Alternatively, the position-limiting member 400 and the push-pull member 40 are integrally formed to enhance the structural strength between the position-limiting member 400 and the push-pull member 40, and to facilitate the assembly of the ball head member 300 and the handle 210 and to simplify the assembly steps. Alternatively, the position-limiting member 400 and the ball head member 300 are integrally formed to facilitate the simplification of the assembly steps.

[0147] For further information, see Fig.12 , 14 As shown in FIG. 15 , the knotter 1000 includes an elastic member 500 . The elastic member 500 is disposed in the handle 210 and connected between the wrench 220 and the handle 210 , and is used to drive the handle 210 to rotate so as to drive the push-pull member 40 to remove the squeeze on the first squeeze arm 21 .

[0148] In the embodiment of the present application, the elastic member 500 drives the handle 210 to rotate through the pulling force to drive the push-pull member 40 to remove the squeezing of the first squeezing arm 21. In the process that the wrench 220 rotates relative to the handle 210 to drive the push-pull member 40 to squeeze the first squeezing arm 21, the elastic member 500 is stretched within the elastic deformation range. Further, the elastic member 500 can be a tension spring, an elastic rope, an elastic band, etc., which is elastically stretched and can be reset after being subjected to the pulling force.

[0149] For further information, see Figure 9-11 As shown in 14-15, the wrench 220 also has a connecting hole 2204 on the connecting portion 2210, and the handle 210 has a connecting column 2107. The elastic member 500 is connected between the connecting hole 2204 and the connecting column 2107, and in 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 member 500 is stretched within its elastic deformation range, and when the external force applied to the wrench 220 is removed, the elastic member 500 drives the wrench 220 to rotate in the opposite direction to make the push-pull member 40 move from the third position to the second position, and then from the second position to the first position, so that the first squeezing arm 21 is reset from the squeezing position to the initial position.

[0150] In the embodiment of the present application, the elastic member 500 can also drive the handle 210 to rotate by pressure to drive the push-pull member 40 to remove the squeeze on the first squeezing arm 21. In the process of the wrench 220 rotating relative to the handle 210 to drive the push-pull member 40 to squeeze the first squeezing arm 21, the elastic member 500 is squeezed within the elastic deformation range. Further, the elastic member 500 can be a metal spring, a silicone spring, a compression spring, etc., which is elastically squeezed and can be reset after being squeezed by the squeezing force.

[0151] Furthermore, the elastic member 500 can be abutted between the connecting portion 2210 and an end of the handle 210 close to the suture locking unit 100, or can be abutted between the gripping portion and an end of the handle 210 away from the suture locking unit 100. In 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 member 500 is squeezed within its elastic deformation range, and when the external force applied to the wrench 220 is removed, the elastic member 500 drives the wrench 220 to rotate in the opposite direction to make the push-pull member 40 move from the third position to the second position, and then from the second position to the first position, thereby resetting the first squeezing arm 21 from the squeezing position to the initial position.

[0152] On the other hand, see Figure 16-18 As shown, the present application also provides a knotter system 4000, and the knotter system 4000 includes the knotter 1000 described in any one of the above items. Therefore, the knotter system 4000 has all the above-mentioned 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 in the extrusion chamber 23, and to pass the suture 3000 extending out of the suture tissue through the locking ring 2000 and extend the knotter 1000 from the thread hole.

[0153] Furthermore, the thread hook 4100 includes a hooking member 4110 and a threading ring 4120. The hooking member 4110 includes a hook portion 4111 and a pulling portion 4112, wherein 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 threading ring 4120, and the threading ring 4120 is used for passing the suture 3000, and after removing the threading ring 4120, the part of the suture 3000 passes through the pulling portion 4112.

[0154] The outer diameter of the hook portion 4111 along the extension direction of the hook portion 4111 is smaller than the aperture of the limiting hole and larger than the aperture of the lock ring 2000, so that the lock ring 2000 passing through the pulling portion 4112 is limited between the hook portion 4111 and the threading ring 4120; or the lock ring 2000 passing through the pulling portion 4112 is plugged into the hook portion 4111, so that the lock ring 2000 can be pre-limited and connected to the hook portion 4111. 111 is close to one end of the pulling portion 4112, so as to pre-assemble the lock ring 2000 to the hook 4100, and the end of the hook portion 4111 away from the pulling portion 4112 passes through the limiting hole, the extrusion cavity 23, the wire passing cavity and the wire passing hole in sequence, so as to realize that the main body 2100 of the lock ring 2000 is assembled to the extrusion cavity 23 and the flange portion 2200 is limited on the side of the limiting hole away from the extrusion cavity 23 , so that the locking ring 2000 can be quickly and efficiently assembled on the knotter 1000 through the thread hook 4100, and at the same time, the locking ring 2000 can be limited by the threading ring 4120 to prevent the locking ring 2000 from falling, and the pulling part 4112 can be supported by the threading ring 4120, so that the suture 3000 extending out of the suture tissue can first pass through the threading ring 4120, and then be removed from the threading ring 4120. 0, and then passes through the rope-shaped pulling portion 4112, and further in the process of pulling the hook portion 4111 to separate from the knotter 1000, the suture 3000 passing through the pulling portion 4112 passes through the locking ring 2000, the second threading hole 2214, the threading cavity and the first threading hole 12 in sequence together with the pulling portion 4112, and then extends out of the knotter 1000, thereby realizing the threading action of the suture 3000 passing through the locking ring 2000.

[0155] Among them, the pulling part 4112 is a rope-like structure such as cotton rope, steel wire rope, etc., which is easy to bend and has sufficient strength and is clean, so as to facilitate passing through the locking ring 2000 and being sleeved on the threading ring 4120, as well as to facilitate removing the threading ring 4120 and passing through the locking ring 2000, the second threading hole 2214, the threading cavity and the first threading hole 12 in sequence.

[0156] For further information, see Figure 17-18 As shown, the outer wall of the threading ring 4120 has a wire groove 4211 , and the pulling portion 4112 is located in the wire groove 4211 , so that the pulling portion 4112 can be stably sleeved on the threading ring 4120 .

[0157] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A suture locking unit, characterized in that: include: Installation pipe; An extrusion member, wherein the extrusion member is at least partially disposed in the mounting tube, the extrusion member comprises 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 reverse direction; Among them, the first squeezing arm and the second squeezing arm are both rigid structures. The first squeezing arm can rotate along the rotation axis and approach the second squeezing arm under the action of external force. In the process of the second squeezing arm cooperating with the first squeezing arm to squeeze the locking ring to a state of clamping the suture, the part of the second squeezing arm close to the rotation axis produces elastic deformation.

2. The suture locking unit according to claim 1, 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 comprises a first rotating portion, a first arm and a first extrusion portion, the first arm is connected between the first rotating portion and the first extrusion portion, and the first rotating portion is connected to the mounting tube along the rotation axis; The second extrusion arm comprises a second arm and a second extrusion portion, and the second arm is connected between the second extrusion portion and an end of the first rotating portion away from the first arm; Among them, the first arm drives the first extrusion part to rotate synchronously along the rotation axis under the drive of 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 clamp the suture, and the second arm produces elastic deformation to have a driving force tending to drive the first extrusion part away from the second extrusion part.

3. The suture locking unit according to claim 2, characterized in that: The first squeezing arm has an initial position and a squeezing position; The suture locking unit further includes a push-pull member, which is at least partially disposed in the mounting tube and is used to drive the first squeezing arm to move from the initial position to the squeezing position, or to remove the force applied to the first squeezing arm, so that the first squeezing arm is reset from the squeezing position to the initial position under the elastic deformation of the second arm; Wherein, when the first extrusion arm is in the initial position, the first extrusion portion is away from the second extrusion portion, and the second arm does not produce elastic deformation; When the first extrusion arm is in the extrusion position, the first extrusion portion is close to the second extrusion portion, and the second arm generates elastic deformation; And / or, the push-pull member, under the limitation of the inner wall of the mounting tube, squeezes the first squeezing arm along the first direction to move from the initial position to the squeezing position; Alternatively, the push-pull member, under the limitation of the inner wall of the mounting tube, squeezes the first squeezing arm in a direction opposite to the first direction to move from the initial position to the squeezing position.

4. The suture locking unit according to claim 3, characterized in that: An avoidance space and a wire passing space are formed between the second arm and the mounting tube, the avoidance space is connected to the wire passing space and is away from the second extrusion portion, the mounting tube has a first wire passing hole, the second arm has a second wire passing hole, the wire passing space is connected between the first wire passing hole and the second wire passing hole, and the suture passing through the locking ring sequentially passes through the second wire passing hole, the wire passing space and the first wire passing hole and extends out of the mounting tube; The suture locking unit further comprises a cutter, wherein the cutter is at least partially located in the avoidance space and moves synchronously with the push-pull member, and an end of the push-pull member close to the first extrusion portion along the first direction passes over the blade of the cutter; The push-pull member can sequentially reach a first position, a second position and a third position along the first direction. When the push-pull member is in the first position, the first squeezing arm is in the initial position, the second arm does not produce elastic deformation, and the blade of the cutter is located in the avoidance space and away from the line-crossing space. When the push-pull member is in the second position, the first extrusion arm is in the extrusion position, the second arm is elastically deformed, and the blade of the cutter is located in the avoidance space and close to the wire-passing space; When the push-pull member is in the third position, the first squeezing arm is in the squeezing position, the second arm is elastically deformed, the blade of the cutter is located in the thread passing space, and the suture passing through the thread passing space is cut off; And / or, the push-pull member includes a first connecting rod portion, a push-pull portion and a clamping portion, the push-pull portion and the clamping portion are respectively connected to the same end of the first connecting rod portion, the push-pull portion is used to squeeze the first squeezing arm from the initial position to the squeezing position, the cutter is clamped with the clamping portion, and is limited to be located between the clamping portion and the inner wall of the mounting tube; Among them, one of the cutter and the clamping part has a first boss, and the other of the cutter and the clamping part has a first slot, and the first boss is adaptively clamped with the first slot.

5. The suture locking unit according to any one of claims 2 to 4, characterized in that: The second arm comprises a first section, a second section and a third section, the first section extends in a direction away from the first direction and is connected between the first rotating portion and the second section, the second section extends in a direction perpendicular to the rotation axis and away from the first extrusion arm and is connected between the first section and the third section, the third section extends in the first direction and is connected between the second section and the second extrusion portion; Wherein, when the first arm drives the first extrusion portion to approach the second extrusion portion under the action of an external force, at least one of the first section, the second section and the third section undergoes elastic deformation; And / or, the first section is connected between the first rotating part and the second section in a wavy line or a straight line; And / or, the second section is connected between the first section and the third section in a wavy line, C-shaped, V-shaped, or straight line shape, and the opening of the C-shaped or V-shaped second section faces the first direction or turns away from the first direction; And / or, the third section is connected between the second extrusion portion and the second section in a wavy line or a straight line.

6. The suture locking unit according to any one of claims 2 to 4, characterized in that: The first extrusion portion is tooth-shaped, the second extrusion portion is groove-shaped, and the extension direction of the groove-shaped second extrusion portion is parallel to the rotation axis; Wherein, the mounting tube is formed with a fitting portion corresponding to the second extrusion portion structure, and the fitting portion is fitted and connected with the second extrusion portion; And / or, a side of the first arm facing away from the second arm is gradually inclined along the first direction from the first rotating portion to the first pressing portion.

7. The suture locking unit according to any one of claims 2 to 4, characterized in that: The extrusion piece further includes a limiting end portion, the limiting end portion is connected to an end of the second extrusion portion away from the second arm and covers the opening of the mounting tube, the limiting end portion is provided with a first limiting hole, the first limiting hole is used for the main body of the lock ring to pass through, and limits the flange portion of the lock ring; Wherein, the limiting end portion and the second extrusion arm are integrally formed; Alternatively, the limiting end, the second extrusion arm and the first extrusion arm are integrally formed.

8. A knotter, characterized in that: The knotter comprises a suture locking unit according to any one of claims 1 to 7; as well as An operating unit is connected to one end of the mounting tube away from the extrusion member, 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 squeeze the locking ring to a state of clamping the suture.

9. The knotter according to claim 8, characterized in that The operating unit comprises a handle, a second limiting hole is formed in the handle, a second clamping groove is formed at one end of the mounting tube away from the extrusion member, the mounting tube is passed through the handle, and the groove walls of the second clamping groove opposite to each other along the axial direction of the mounting tube are respectively limited by the end surfaces of opposite ends of the second limiting hole, so that the mounting tube is limitedly clamped in the handle; The operating unit also includes a wrench, which is rotatably connected to the handle, and an end of the push-pull member of the suture 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 remove the extrusion force on the first extrusion arm.

10. The knotter according to claim 8, characterized in that The operating unit comprises a handle, and one end of the mounting tube away from the extrusion member is inserted into the handle in a limited position along the axial direction of the mounting tube; The operating unit also includes a wrench, which is rotatably connected to the handle and is universally connected to one end of the push-pull member of the suture locking unit that extends out of the mounting tube through a ball head member. The wrench rotates relative to the handle to drive the ball head 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.

11. The knotter according to claim 10, characterized in that The wrench comprises a connecting portion, a second rotating portion and an operating portion, wherein the second rotating portion is rotatably connected to the handle and is located between the connecting portion and the operating portion, the connecting portion is universally connected to the ball head member, the operating portion extends out of the handle and drives the wrench to rotate along the second rotating portion under the action of an external force, so that the connecting portion drives the ball head member and the push-pull member to move axially along the mounting tube; Wherein, the ball head member comprises a ball head portion and a second connecting rod portion, and opposite ends of the second connecting rod portion are respectively connected between the ball head portion and one end of the push-pull member extending out of the mounting tube; The connecting portion is structured to form a swing groove, a limit groove and a notch, wherein the notch is respectively connected to the same side of the swing groove and the limit groove, and is used for the ball head to enter the limit groove, and for the second connecting rod to enter the swing groove, the swing groove is connected to the limit groove, and the swing groove is V-shaped in the direction away from the limit groove. And / or, the handle structure is formed with a sliding cavity, and the sliding cavity is located in the movement direction of the push-pull member away from the extrusion member; The knotter further comprises a limiting member, which is connected between the ball head member and one end of the push-pull member extending out of the mounting tube and is slidably limited in the sliding cavity along the moving direction of the push-pull member; Wherein, the position-limiting member, the push-pull member and the ball head member are detachably connected; Alternatively, the position-limiting member, the push-pull member and the ball head member are integrally formed; Alternatively, the limiting member and the push-pull member are integrally formed; Alternatively, the limiting member and the ball head member are integrally formed.

12. The knotter according to any one of claims 9 to 10, characterized in that: The knotter includes an elastic member, which is arranged in the handle and connected between the wrench and the handle, and is used to drive the handle to rotate so as to drive the push-pull member to remove the squeeze on the first squeezing arm; The elastic member drives the handle to rotate by pulling force to drive the push-pull member to remove the extrusion of the first extrusion arm. In the process in which the wrench rotates relative to the handle to drive the push-pull member to extrude the first extrusion arm, the elastic member is stretched within the elastic deformation range. Alternatively, the elastic member drives the handle to rotate through pressure to drive the push-pull member to remove the squeezing of the first squeezing arm. In the process of the wrench rotating relative to the handle to drive the push-pull member to squeeze the first squeezing arm, the elastic member is squeezed within the elastic deformation range.

13. A knotter system, characterized in that, The knotter system comprises the knotter according to any one of claims 8 to 12, and A thread hook, the thread hook comprises a hook and a threading ring, the hook comprises a hook portion and a pulling portion, the pulling portion is connected to one end of the hook portion, the pulling portion passes through a locking ring and is sleeved on the threading ring, the threading ring is used for passing a suture, and after removing the threading ring, the part of the suture is passed through the pulling portion; Wherein, the locking ring passing through the pulling part is limited to be 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 aperture of the limiting hole and larger than the aperture of the locking ring, so that the locking ring passing through the pulling portion is limited to be located between the hook portion and the threading ring; And / or, the outer wall of the threading ring has a wire groove, and the pulling part is located in the wire groove.

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