Wire locking ring locking unit and locking wire cutting device

Abstract

The invention discloses a wire locking ring locking unit and a locking wire cutting device. According to the thread locking ring locking unit, the thread locking ring is contained in the extrusion cavity corresponding to the second sub-hole to be extruded by the extrusion piece till the thread locking ring clamps and fixes the thread, and therefore the thread locking ring cannot move relative to the thread locking ring locking unit in the process that the thread locking ring is extruded in place, and the thread locking ring locking unit can not move relative to the thread locking ring. The problems that the distance between the thread locking ring and the tissue suturing position is increased, so that an implant is increased, and the suturing tissue healing time is prolonged can be avoided, the risk that the suturing tissue is strained due to the fact that the thread locking ring moves away from the suturing tissue in the process of gradually clamping the suture is avoided, and meanwhile the problem that the suturing tissue is damaged after the implanted suture is too long and the suture is cut off is solved. The implanted suture retreats to enter the sutured tissue, so that the sutured tissue cannot be tightly attached, and the healing time of the sutured tissue is further prolonged.

Description

[0001] This application is a divisional application of the invention patent application filed on December 30, 2024, with application number 202411970844.9 and invention title "Lock-in Ring Locking Unit and Locking Cutting Device". Technical Field

[0002] This application relates to the field of medical device technology, specifically to a locking ring locking unit and a locking tangent device. Background Technology

[0003] The function of the locking and cutting device is to press the locking ring fitted on the surgical suture to clamp and lock the surgical suture, and then cut the surgical suture on the proximal side of the locking ring to complete the operation.

[0004] In existing suture-locking devices, the locking ring typically moves along with the locking element away from the suture site during the suture-locking process. This means the locking ring moves axially along the device's tube away from the suture site, increasing the distance between the locking ring and the suture. This can lead to loosening of the suture, poor suturing results, and even the risk of suture tearing of the suture tissue as the distance increases. Therefore, existing suture-locking devices require improvement. Summary of the Invention

[0005] The main objective of this application is to provide a suture locking unit and a suture locking and cutting device to solve the problem in the prior art where the suture locking ring moves away from the suture tissue when it is compressed to lock the surgical suture.

[0006] On one hand, this application provides a locking unit for a locking loop, comprising:

[0007] The main body has a receiving cavity and a first hole, the first hole communicating with the receiving cavity and used for the locking ring and the thread passing through the locking ring to enter and exit the receiving cavity;

[0008] An extrusion member is disposed within the receiving cavity, and the extrusion member and the main body structure form an extrusion cavity, the extrusion cavity is connected to the first hole and is used to receive a locking ring, and the extrusion member is used to extrude the locking ring received within the extrusion cavity;

[0009] The thread lock ring has a first state and a second state. When the thread lock ring is in the first state, the thread can be movably passed through the thread lock ring. When the thread lock ring is in the second state, the thread is clamped in the thread lock ring.

[0010] The first hole includes a first sub-hole and a second sub-hole. The first sub-hole can be used to allow the wire loop in the first state or the second state to pass through, or the first sub-hole and the second sub-hole are connected and can be used to allow the wire loop in the first state or the second state to pass through, and the second sub-hole can be used to allow the wire loop in the second state to pass through.

[0011] Furthermore, the locking unit for the wire lock ring also includes a second cutter, which is disposed on one side of the extruder and extends out of the extruder to prevent the wire lock ring located in the extrusion cavity from extending out of the extrusion cavity.

[0012] Furthermore, the main body includes a tube and a support member. The tube is configured to form the first hole. The support member is disposed inside the tube and defines the receiving cavity with the tube. The support member includes a support plate portion.

[0013] The extrusion chamber is provided with a limiting member, which is located on the extrusion member and / or the support plate. The limiting member is used to guide the locking ring entering the extrusion chamber to be placed along the axial direction of the outer tube.

[0014] The extruder has a first position and a second position. When the extruder is in the first position, the extruder is away from the support plate portion; when the extruder is in the second position, the extruder is close to the support plate portion.

[0015] The limiting member is a flexible member, and during the process of the extrusion member moving from the first position to the second position, the limiting member undergoes corresponding elastic deformation.

[0016] Alternatively, the limiting member is an elastic member, and during the process of the extruder moving from the first position to the second position, the limiting member undergoes corresponding elastic deformation;

[0017] Alternatively, the limiting member is a limiting post, and the extrusion member or the support plate is provided with a clearance hole corresponding to the limiting member. During the process of the extrusion member moving from the first position to the second position, the limiting member enters the corresponding clearance hole.

[0018] Furthermore, the support member also includes two limiting plate portions, which are disposed opposite to each other on the support plate portion along the axial direction of the tube body, and form a first limiting groove with the support plate portion;

[0019] The extrusion member is disposed in the first limiting groove and forms the extrusion cavity with the support plate, the two limiting plates, and the corresponding inner wall of the tube.

[0020] The locking unit for the wire lock ring also includes an eccentric member, which is disposed in the receiving cavity and rotatably disposed on the side of the extruder away from the support plate. The eccentric member is used to drive the extruder to extrude the wire lock ring housed in the extrusion cavity.

[0021] Furthermore, it also includes an elastic element disposed within the receiving cavity for driving the extruder away from the support plate portion;

[0022] Driven by the elastic member, the extruder also has a third position, in which the extruder moves away from the support plate portion when it is in the third position.

[0023] The third position is located between the first position and the second position, or the third position is the same as the first position.

[0024] Furthermore, the tube body includes an outer tube, an end plate, and a fixing member, wherein the end plate and the fixing member are respectively disposed at opposite ends of the outer tube along the axial direction of the outer tube;

[0025] The fixing member is connected to the support member and is configured to form a first limiting part, and the extrusion member is configured to form a second limiting part. Along the axial direction of the outer tube, the first limiting part is away from the extrusion cavity, and the second limiting part is close to the extrusion cavity. The opposite ends of the elastic member are respectively limited and abutted between the first limiting part and the second limiting part, so that the end of the extrusion member away from the fixing member abuts against the end plate. The end plate is configured to form the first hole.

[0026] Furthermore, the extrusion member includes a first segment and a second segment, the first segment defining the extrusion cavity between itself, the corresponding support member, and the end plate, the second segment being close to the fixing member, and the second segment being configured to form the second limiting portion;

[0027] The eccentric component is rotatably supported on the side of the first section opposite to the extrusion cavity;

[0028] Alternatively, the body may also be configured to have a second hole for the thread extending from the locking ring to pass through;

[0029] The support plate is configured to have a second limiting groove, which is located on the side of the extrusion chamber away from the end plate, and the second hole communicates with the bottom of the second limiting groove.

[0030] The locking unit for the thread lock also includes a first cutter, which is disposed in the second limiting groove. When the extruder is in the second position, the first cutter moves in the second limiting groove toward the extrusion chamber and passes through the second hole to cut the thread passing through the second hole.

[0031] Alternatively, the body may also be configured to have a second hole for the thread extending from the locking ring to pass through;

[0032] The support plate is configured to have a second limiting groove, which is located on the side of the extrusion chamber away from the end plate, and the second hole communicates with the bottom of the second limiting groove.

[0033] The second cutter is located on the side of the extruder facing the support plate.

[0034] When the extruder is in the first position, the second cutter is away from the second limiting groove. When the extruder is in the second position, the second cutter enters the second limiting groove and cuts the thread passing through the second hole.

[0035] Furthermore, the elastic element is a metal spring sheet, and one end of the metal spring sheet near the first limiting part is pressed against the opening of the second limiting groove to restrict the first cutter from disengaging from the second limiting groove.

[0036] On the other hand, this application also provides a locking and cutting device, the locking and cutting device comprising the locking ring locking unit described in any of the above claims; and

[0037] An operating handle and a connecting tube, the connecting tube being connected between the operating handle and the main body of the locking ring unit, and located at the end of the main body away from the first hole;

[0038] The locking unit for the wire lock ring further includes a pulling member, which passes through the connecting tube and is connected between the operating handle and the eccentric member. Under the drive of the operating handle, the pulling member pulls the eccentric member of the locking unit to rotate, thereby driving the extruder to extrude the wire lock ring housed in the extrusion chamber.

[0039] Furthermore, the eccentric member is rotatably supported against the side of the extruder opposite to the extrusion chamber via a rotating shaft;

[0040] The eccentric component is provided with a limiting hole and a relief groove. The limiting hole is away from the rotating shaft and communicates with the relief groove. The limiting hole is used for the pulling component to pass through and to limit the limiting connection end of the pulling component. The pulling component, which passes through the limiting hole at least partially, is received in the relief groove. The opening of the relief groove faces the extrusion component.

[0041] In the locking unit of this application, by placing the pressing member within the receiving cavity formed by the main body structure, and forming the pressing cavity with the main body structure, and by configuring the pressing cavity to communicate with the first hole, the locking ring with the thread threaded through it can enter and exit the pressing cavity through the first hole. Furthermore, by providing a first sub-hole for the locking ring in either the first or second state to pass through, and a second sub-hole for the locking ring in the second state to pass through, the locking ring in the first state can smoothly enter the pressing cavity through the first sub-hole and be confined within the pressing cavity corresponding to the second sub-hole, thereby allowing the locking ring to move within the pressing cavity corresponding to the second sub-hole. The suture is compressed by the compression member until it is clamped and fixed in place by the compression ring. Therefore, during the compression process, the suture ring contained in the compression chamber does not move relative to the suture ring locking unit. This avoids the problem of increased implantation due to increased distance between the suture ring and the suture site, which would lead to increased suture healing time. It also avoids the risk of tearing the suture tissue as the suture ring moves away from it during the gradual clamping process. At the same time, it effectively solves the problem of excessively long implanted sutures retracting into the suture tissue after cutting, causing the suture tissue to not adhere tightly and further increasing the suture healing time. Attached Figure Description

[0042] 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:

[0043] Figure 1 This is an overall schematic diagram of the locking unit of the locking ring in one embodiment of this application.

[0044] Figure 2 for Figure 1 A sectional view along the A-A1 direction.

[0045] Figure 3 This is an overall schematic diagram of the locking unit of the locking ring from another perspective in one embodiment of this application.

[0046] Figure 4 for Figure 3A sectional view along the B-B1 direction, showing only the main body, the sewing ring, and the seam.

[0047] Figure 5 for Figure 1 A cross-sectional view along the A-A1 direction shows the extruder in the first position and the locking ring contained within the extrusion chamber.

[0048] Figure 6 for Figure 1 A cross-sectional view along the A-A1 direction, showing the extruder in the second position.

[0049] Figure 7 This is an exploded view of the locking ring unit in one embodiment of this application.

[0050] Figure 8 This is a schematic diagram of the support member in one embodiment of this application.

[0051] Figure 9 This is a schematic diagram of the extrusion component in one embodiment of this application.

[0052] Figure 10 This is a cross-sectional view of a locking tangent device in one embodiment of this application.

[0053] Figure 11 This is a schematic diagram of the eccentric component in one embodiment of this application.

[0054] The above figures include the following reference numerals:

[0055] Locking ring locking unit 100, main body 10, receiving cavity 11, first hole 12, first sub-hole 121, second sub-hole 122, tube body 13, outer tube 131, end plate 132, fixing member 133, fixing hole 134, support member 14, support plate part 141, limiting plate part 142, first limiting groove 143, second limiting groove 144, first limiting part 15, second hole 16, rotating shaft 17, clearance hole 18, pressing member 20, second... Limiting part 21, first section 22, second section 23, first plate part 231, second plate part 232, eccentric part 30, limiting hole 31, clearance groove 32, extrusion chamber 40, elastic part 50, first cutter 60, second cutter 70, limiting part 80, pulling part 90, locking ring 200, through hole 210, sewing thread 300, operating handle 400, fixed arm 410, movable arm 420, connecting pipe 500, locking cutting device 1000. Detailed Implementation

[0056] 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.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0059] Please see Figure 1-4 As shown, this application provides a thread lock ring 100 for compressing a thread lock ring 200 to clamp and fix a thread 300 passing through the thread lock ring 200. The thread lock ring 200 has a first state and a second state. In the first state, the thread 300 is movably passed through the thread lock ring 200; in the second state, the thread 300 is clamped within the thread lock ring 200.

[0060] Furthermore, the locking unit 100 includes a main body 10, a pressing member 20, and an eccentric member 30. The pressing member 20 and the eccentric member 30 are respectively disposed within the main body 10, and the eccentric member 30 rotates within the main body 10 along the pivot 17 to drive the pressing member 20 to move, and cooperates with the main body 10 to press the locking ring 200, so that the sewing thread 300 passing through the locking ring 200 is clamped and fixed by the locking ring 200.

[0061] Furthermore, the main body 10 is configured to have a receiving cavity 11 and a first hole 12, the first hole 12 being connected to the receiving cavity 11 and used to allow the locking ring 200 and the sewing thread 300 passing through the locking ring 200 to enter and exit the receiving cavity 11.

[0062] Furthermore, after suturing the tissue, the suture 300 needs to be fixed, and any excess suture 300 after fixing needs to be removed, thus completing the entire internal suturing process. Since internal suturing is not convenient for direct knotting, passing the suture 300 through the locking loop 200 and clamping it with the compressed locking loop 200 becomes a convenient and efficient way to fix the suture 300.

[0063] Specifically, after the tissue is sutured, the locking loop 200 and the suture 300 passing through the locking loop 200 are inserted into the receiving cavity 11 through the first hole 12. After the locking loop 200 is squeezed into place and the inserted suture 300 is clamped and fixed, the excess suture 300 is cut off, and the squeezed locking loop 200 and the clamped suture 300 are removed from the receiving cavity 11 through the first hole 12.

[0064] Further, please refer to Figure 2 , 5 As shown in Figure 6, the extrusion member 20 is disposed in the receiving cavity 11, and the extrusion member 20 and the main body 10 are configured to form an extrusion cavity 40. The extrusion cavity 40 is connected to the first hole 12 and is used to receive the locking ring 200.

[0065] The eccentric member 30 is also disposed within the receiving cavity 11 and abuts against the side of the pressing member 20 opposite to the pressing cavity 40. Driven by the eccentric member 30, the pressing member 20 has a first position and a second position. In the first position, the pressing member 20 is close to the rotation center of the eccentric member 30. At this time, the cavity volume of the pressing cavity 40 is at its maximum, and the unpressed thread loop 200 can directly enter and exit the pressing cavity 40 through the first hole 12. In the second position, the pressing member 20 is away from the rotation center. At this time, the cavity volume of the pressing cavity 40 is compressed, so that the thread loop 200 housed within the pressing cavity 40 is pressed into place, clamping and securing the passing thread 300.

[0066] Driven by the eccentric member 30, during the movement of the extrusion member 20 from the first position to the second position, the suture ring 200 housed in the extrusion cavity 40 does not move relative to the suture ring locking unit 100. Therefore, it avoids the increase in implantation due to the increased distance between the suture ring 200 and the tissue suture position, which would lead to an increase in the healing time of the sutured tissue. It also avoids the risk of tearing the sutured tissue as the suture ring 200 moves away from the sutured tissue during the process of gradually clamping the suture 300. At the same time, it effectively solves the problem that the implanted suture 300 is too long and, after being cut, retracts into the sutured tissue, causing the sutured tissue to not fit tightly, further increasing the healing time of the sutured tissue.

[0067] Further, please refer to Figure 4 , 7 As shown in Figure 8, the main body 10 includes a tube 13 and a support member 14. The tube 13 is configured to form the first hole 12. The support member 14 is disposed inside the tube 13 and defines the receiving cavity 11 with the tube 13.

[0068] Furthermore, the support member 14 includes a support plate portion 141 and two limiting plate portions 142. The two limiting plate portions 142 are disposed opposite to each other on the support plate portion 141 along the axial direction of the tube body 13, and form a first limiting groove 143 with the support plate portion 141.

[0069] The extrusion member 20 is disposed within the first limiting groove 143, and defines the extrusion cavity 40 between the support plate portion 141, the two limiting plate portions 142, and the corresponding inner wall of the tube body 13. By movably disposing the extrusion member 20 within the first limiting groove 143, the extrusion member 20 can be limited and guided by the first limiting groove 143 when moving between the first position and the second position, thereby improving the movement accuracy of the extrusion member 20 and increasing the extrusion efficiency of the locking ring 200.

[0070] Furthermore, the eccentric member 30 is rotatably disposed on the side of the extruder 20 opposite to the support plate portion 141. When the extruder 20 is in the first position, it is away from the support plate portion 141. At this time, the cavity volume of the extrusion chamber 40 is at its maximum, and the unextruded thread lock ring 200 can smoothly enter and exit the extrusion chamber 40 through the first hole 12. When the extruder 20 is in the second position, it is close to the support plate portion 141. At this time, the cavity volume of the extrusion chamber 40 is compressed, so that the thread lock ring 200 housed in the extrusion chamber 40 is extruded into place and the passing thread 300 is clamped and fixed.

[0071] Further, please refer to Figure 2 , 5 As shown in Figure 6, the locking ring locking unit 100 further includes an elastic element 50, which is used to drive the extruder 20 to move from the second position to the third position so that the locking ring 200, after being extruded into position, can exit the extrusion chamber 40 together with the locked sewing thread 300.

[0072] Furthermore, the elastic member 50 is disposed in the receiving cavity 11 and is used to drive the pressing member 20 away from the support plate portion 141, so that the pressing member 20 moves from the second position to the third position, so that the pressed-in locking ring 200 can quickly exit from the first hole 12 after the thread is cut, or facilitate the pressing of the next locking ring 200.

[0073] In an embodiment of this application, the elastic member 50 may have sufficient elastic driving force to drive the pressing member 20 from the second position to the third position. The third position is the same as the first position, allowing the locking ring unit 100 to be reused.

[0074] In embodiments of this application, the elastic element 50 may also have a certain elastic driving force to drive the extrusion element 20 from the second position to the third position. The third position is between the first position and the second position, and when the extrusion element 20 is in the third position, the locking ring 200 in the first state cannot enter the extrusion chamber 40, while the locking ring 200 in the second state can exit the extrusion chamber 40.

[0075] Further, please refer to Figure 4-6 As shown, the tube body 13 includes an outer tube 131, an end plate 132, and a fixing member 133. The end plate 132 and the fixing member 133 are respectively disposed at opposite ends of the outer tube 131 along the axial direction of the outer tube 131, so as to cooperate with the outer tube 131 to define the receiving cavity 11. The end plate 132 is configured to form the first hole 12.

[0076] Furthermore, the fixing member 133 is connected to the support member 14 and is configured to form a first limiting portion 15. Specifically, the fixing member 133 is connected to the support plate portion 141 to form the first limiting portion 15. The pressing member 20 is configured to form a second limiting portion 21.

[0077] Along the axial direction of the outer tube 131, the first limiting part 15 is away from the extrusion chamber 40, and the second limiting part 21 is close to the extrusion chamber 40. The opposite ends of the elastic member 50 are respectively limited and abutted between the first limiting part 15 and the second limiting part 21, so that the end of the extrusion member 20 away from the fixing member 133 abuts against the inner surface of the end plate 132 under the drive of the elastic member 50, thereby limiting the extrusion member 20 along the axial direction of the outer tube 131 between the elastic member 50 and the end plate 132. Therefore, under the limiting action of the first limiting groove 143, the extrusion member 20 can only move from the first position to the second position under the drive of the eccentric member 30, and from the second position to the first position under the drive of the elastic member 50, or from the second position to the third position close to the first position.

[0078] Further, please refer to Figure 5-6 As shown in Figure 9, the extrusion member 20 includes a first segment 22 and a second segment 23. The first segment 22 defines the extrusion cavity 40 between itself and the corresponding support member 14 and the end plate 132. Specifically, the first segment 22 defines the extrusion cavity 40 between itself and the corresponding support plate portion 141, the two limiting plate portions 142, and the end plate 132. The first hole 12 communicates with the extrusion cavity 40, and when the extrusion member 20 is in the second position, the extrusion member 20 blocks at least a portion of the first hole 12.

[0079] The second segment 23 is located near the fixing member 133 and forms the second limiting part 21. Specifically, the second segment 23 includes a first plate portion 231 and two second plate portions 232. The first plate portion 231 is disposed opposite to the support plate portion 141 and is driven by the eccentric member 30 to approach the support plate portion 141. The two second plate portions 232 are respectively connected to the opposite sides of the first plate portion 231 and together with the end face of the first plate portion 231 and the first segment 22, form the second limiting part 21. The second limiting part 21 is a limiting groove structure. The elastic member 50 is positioned and abuts against one end of the second limiting part 21 within the limiting groove.

[0080] Furthermore, each of the second plate portions 232 corresponds to one of the limiting plate portions 142, and the side of each second plate portion 232 facing away from the other second plate portion 232 is in contact with the corresponding limiting plate portion 142, thereby increasing the area of ​​mutual limiting between the extrusion member 20 and the first limiting groove 143, so that the extrusion member 20 moves more stably in the first limiting groove 143 in the direction of approaching or moving away from the support plate portion 141.

[0081] Furthermore, the eccentric member 30 is rotatably abutted against the side of the first section 22 away from the extrusion chamber 40, thereby ensuring that the eccentric member 30 drives the extrusion member 20 to move toward the support plate portion 141 to extrude the extrusion force of the locking ring 200, so as to effectively extrude the locking ring 200 into place.

[0082] Further, please refer to Figure 2 , 4 As shown in Figure 8, the main body 10 is also configured to have a second hole 16. The second hole 16 is for the thread 300 extending from the locking ring 200 to pass through. This allows the cut excess thread 300 to be removed from the second hole 16 after the thread 300 has been secured by the locking ring 200.

[0083] Furthermore, the support plate portion 141 is configured to form a second limiting groove 144. The second limiting groove 144 is located on the side of the extrusion chamber 40 away from the end plate 132, and the second hole 16 communicates with the bottom of the second limiting groove 144. The sewing thread 300 passing through the locking ring 200 will pass through the second limiting groove 144 and the second hole 16 in sequence before extending out of the outer tube 131.

[0084] In the embodiments of this application, please refer to Figure 5-6 As shown, the locking ring unit 100 further includes a first cutter 60. The first cutter 60 is disposed within the second limiting groove 144. When the extruder 20 is in the second position, the first cutter 60 moves within the second limiting groove 144 toward the extrusion chamber 40 and passes through the second hole 16 to cut the thread 300 passing through the second hole 16.

[0085] Specifically, before the cutting is completed, the suture 300 extending out of the second hole 16 is still in a taut state. When the first cutter 60 passes through the second hole 16, the blade of the first cutter 60 will directly cut the suture 300, thereby completing the cutting of the excess suture 300.

[0086] Furthermore, the elastic element 50 may be a spring, a metal sheet, or other elastic structure made of medical-grade material, and may drive the extrusion element 20 to reset from the second position to the first position, or move from the second position to the third position near the first position.

[0087] Preferably, in the embodiments of this application, the elastic member 50 is a metal spring sheet, so that the elastic member 50 can realize the reset movement of the pressing member 20 from the second position to the first position, or move from the second position to the third position close to the first position, and can also hold the pressing member 20 against the end plate 132 under the limiting action of the first limiting part 15 and the second limiting part 21, so that the pressing member will not move along the axial direction of the outer tube 131.

[0088] Furthermore, the end of the metal spring near the first limiting part 15 simultaneously presses against the opening of the second limiting groove 144 to restrict the first cutter 60 from disengaging from the second limiting groove 144. This allows the metal spring to simultaneously limit the first cutter 60, preventing it from disengaging from the second limiting groove 144 and preventing it from sliding freely within the second limiting groove 144. This would prevent the thread 300 from being cut by the first cutter 60 before it is clamped and fixed by the locking ring 200, thus causing the clamping and fixing of the thread 300 to fail.

[0089] Furthermore, in an embodiment of this application, after the extruder 20 completes the extrusion of the thread lock ring 200, the first cutter 60 moves individually toward the extrusion chamber 40 under the drive of an external force to cut off the excess thread 300.

[0090] In the embodiments of this application, please refer to Figure 5-6 As shown, the locking unit 100 also includes a second cutter 70. The second cutter 70 is located on the side of the extruder 20 facing the support plate portion 141, and the second cutter 70 moves synchronously with the extruder 20. After the extruder 20 presses the locking ring 200 into place, the cutting edge of the second cutter 70 approaches the excess thread 300 extending from the locking ring 200 and passing through the second hole 16. Under the further drive of the eccentric member 30, the extruder 20 drives the second cutter 70 to continue moving until the second cutter 70 cuts the excess thread 300.

[0091] Furthermore, the second cutter 70 extends out of the extruder 20 to prevent the thread loop 200 located within the extrusion cavity 40 from extending out of the extrusion cavity 40. Specifically, the second cutter 70 is closer to the support plate portion 141 relative to the extruder 20. Therefore, in the embodiments of this application, the side of the second cutter 70 facing the end plate 132 can limit the side of the extrusion cavity 40 away from the end plate 132, thereby forming a limiting cavity in conjunction with the extrusion cavity 40, thereby limiting the thread loop 200 located within the extrusion cavity 40, so that the thread loop 200 will not fall out of the extrusion cavity 40. Thus, when the extruder 20 moves to the second position, the thread loop 200 can be completely extruded into place, so that the portion of the suture 300 passing through the thread loop 200 is clamped and fixed, thereby increasing the clamping length of the thread loop 200 on the suture 300 and improving the stability of the suture 300 fixation.

[0092] Furthermore, when the extruder 20 is in the first position, the second cutter 70 is away from the second limiting groove 144; when the extruder 20 is in the second position, the second cutter 70 enters the second limiting groove 144 and cuts the thread 300 passing through the second hole 16.

[0093] Specifically, when the extruder 20 moves to the second position, the second cutter 70 will pass over the support plate portion 141 and approach the surface of the extruder 20, and enter the second limiting groove 144, thereby reducing the amount of excess suture 300 remaining through the suture ring 200, thereby reducing the amount of implant and improving the efficiency of complete healing of the suture wound.

[0094] Further, please refer to Figure 2 As shown, a limiting member 80 may also be provided inside the extrusion chamber 40. The limiting member 80 is provided on the extrusion member 20 and / or the support plate portion 141, and the limiting member 80 is used to guide the locking ring 200 entering the extrusion chamber 40 to be positioned along the axial direction of the outer tube 131. This further reduces the amount of excess suture 300 remaining after passing through the locking ring 200.

[0095] Furthermore, the limiting member 80 is disposed in the extrusion chamber 40 along the axial direction of the outer tube 131 to restrict the first central axis of the locking ring 200 entering the extrusion chamber 40 from being parallel to the second central axis of the outer tube 131, thereby effectively improving the placement of the locking ring 200 in the extrusion chamber 40 parallel to the second central axis.

[0096] In the embodiments of this application, the limiting member 80 is a flexible member, and during the process of the extrusion member 20 moving from the first position to the second position, the limiting member 80 undergoes corresponding elastic deformation.

[0097] Furthermore, the flexible component also provides a certain degree of cushioning.

[0098] In the embodiments of this application, the limiting member 80 is an elastic member, and the limiting member 80 undergoes corresponding elastic deformation during the process of the extrusion member 20 moving from the first position to the second position.

[0099] Furthermore, the elastic member also has a buffering function, and works with the elastic member 50 to drive the pressing member 20 to reset from the second position to the first position, or to move from the second position to the third position close to the first position.

[0100] In the embodiments of this application, please refer to Figure 2 As shown, the limiting member 80 is a limiting post, and the extrusion member 20 or the support plate portion 141 is provided with a clearance hole 18 corresponding to the limiting member 80. During the process of the extrusion member 20 moving from the first position to the second position, the limiting member 80 enters the corresponding clearance hole 18.

[0101] Furthermore, the limiting post and the clearance hole 18 also have a guiding function, so that the extrusion member 20 can move more accurately between the first position and the second position, or between the second position and the third position close to the first position.

[0102] Further, please refer to Figure 2-5 As shown, the first hole 12 includes a first sub-hole 121 and a second sub-hole 122. The first sub-hole 121 can be used for the passage of the locking ring 200 in the first state or the second state, and the second sub-hole 122 can be used for the passage of the locking ring 200 in the second state.

[0103] The thread lock ring 200 in the first state has a hollow through hole 210 through which the thread 300 passes. In the second state, the through hole 210 of the thread lock ring 200 is closed because the thread lock ring 200 is squeezed into place. Therefore, the thread lock ring 200 in the second state has a flat structure.

[0104] Specifically, the first sub-hole 121 and the second sub-hole 122 are interconnected, and respectively connect the extrusion chamber 40 to the outside. The first cross-sectional area of ​​the first sub-hole 121 is larger than the cross-sectional area of ​​the second sub-hole 122. The locking ring 200 in the first state cannot enter or exit the extrusion chamber 40 through the second sub-hole 122, while the locking ring 200 in the second state can exit the extrusion chamber 40 from either the first sub-hole 121 or the second sub-hole 122.

[0105] Furthermore, the second sub-hole 122 is a rectangular or trapezoidal hole. The locking ring 200 in the first state cannot enter or exit the extrusion chamber 40 through the second sub-hole 122, but the locking ring 200 in the second state can directly exit the extrusion chamber 40 through the second sub-hole. The first sub-hole 121 is one of a semi-circular hole, a semi-elliptical hole, a rectangular hole, or a trapezoidal hole, and the first sub-hole 121 communicates with the second sub-hole 122 so that the locking ring 200 in the first state can enter the extrusion chamber 40 through the first sub-hole 121, or enter the extrusion chamber 40 through the connection between the first sub-hole 121 and the second sub-hole 122.

[0106] Therefore, by setting the first hole 12 with an irregular structure, it is possible to ensure that the locking ring 200 smoothly enters the extrusion chamber 40 through the first sub-hole 121, while also reducing the risk of the locking ring 200 exiting the extrusion chamber 40, thereby reducing the difficulty of operation. Furthermore, after extrusion is completed, it facilitates the exit of the locking ring 200 in the second state from the extrusion chamber 40 through either the first sub-hole 121 or the second sub-hole 122, thereby improving the efficiency of the locking ring 200 exiting the extrusion chamber 40 in the second state.

[0107] Furthermore, the first sub-hole 121 is located on one side of the second sub-hole 122, so that after the locking ring 200 in the first state enters the extrusion chamber 40 through the first sub-hole 121, the locking ring locking unit 100 can be deflected so that the locking ring 200 moves to the area of ​​the extrusion chamber 40 corresponding to the second sub-hole 122, thereby reducing the risk of the locking ring 200 exiting the extrusion chamber 40.

[0108] On the other hand, please see Figure 10 As shown, this application also provides a locking and cutting device 1000. The locking and cutting device 1000 includes the locking ring locking unit 100 described above. Therefore, the locking and cutting device 1000 has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0109] Furthermore, the suture-locking and cutting device 1000 also includes an operating handle 400 and a connecting tube 500. The connecting tube 500 connects the operating handle 400 and the main body 10 of the suture-locking unit 100, and is located at the end of the main body 10 away from the first hole 12. It is used to connect the operating handle 400 and the suture-locking unit 100 together, so that when suturing and cutting sutures in vivo, the suture-locking unit 100 and part of the connecting tube 500 can be extended out of the patient's body, and the device can be operated by holding the operating handle 400.

[0110] Furthermore, please refer to Figure 5-6 As shown in Figure 10, the locking ring unit 100 further includes a pulling member 90. The pulling member 90 passes through the connecting tube 500 and is connected between the operating handle 400 and the eccentric member 30. Driven by the operating handle 400, the pulling member 90 pulls the eccentric member 30 to rotate, thereby driving the pressing member 20 to move from the first position to the second position.

[0111] Specifically, the operating handle 400 can be a trigger-type operating handle 400, which includes a fixed arm 410 and a movable arm 420. The movable arm 420 is rotatably hinged to the fixed arm 410, and the pulling member 90 passing through the connecting tube 500 is connected to the movable arm 420. By pulling the movable arm 420 closer to the fixed arm 410, the eccentric member 30 is moved, thereby driving the pressing member 20 to move from the first position to the second position. By releasing the movable arm 420, the pressing member 20, driven by the elastic member 50, returns from the second position to the first position, or moves from the second position to the third position close to the first position.

[0112] Alternatively, the operating handle 400 can also be a rotary operating handle 400, wherein the rotary operating handle 400 may include a housing, a hand-tightening component, a lead screw, and a slider. The housing is fixedly connected to the connecting pipe 500 away from the locking unit 100. The slider and the lead screw are respectively disposed within the housing, and the slider is threadedly connected to the lead screw. The hand-tightening component is rotatably disposed on the housing and extends into the housing to connect with the lead screw.

[0113] In an embodiment of this application, the lead screw rotates within the housing but does not move axially along its rotation axis 17, while the slider moves along its rotation axis 17. The pulling member 90, passing through the connecting pipe 500, is connected to the slider. By rotating the hand-tightening member, the lead screw is rotated, causing the slider to move axially along the lead screw. This movement of the slider drives the pulling member 90 to move the eccentric member 30, thereby causing the pressing member 20 to move between the first position and the second position.

[0114] In this embodiment, the slider is fixedly disposed within the outer casing and remains stationary against it. The lead screw rotates under the rotation of the hand-tightening component and moves along its rotation axis 17. The pulling member 90, passing through the connecting pipe 500, is connected to the end of the lead screw away from the hand-tightening component. By rotating the hand-tightening component, the lead screw rotates, causing it to move axially along the rotation axis 17. This, in turn, drives the pulling member 90 to move the eccentric member 30, thereby causing the pressing member 20 to move between the first position and the second position.

[0115] Furthermore, the fixing member 133 is provided with a fixing hole 134, and the end of the connecting pipe 500 away from the operating handle 400 is inserted and fixed in the fixing hole 134.

[0116] Furthermore, the eccentric member 30 is rotatably supported against the side of the extruder 20 away from the extrusion chamber 40 by means of the rotating shaft 17, and the rotating shaft 17 is fixed inside the outer tube 131.

[0117] Further, please refer to Figure 11 As shown, the eccentric member 30 is provided with a limiting hole 31 and a relief groove 32. The limiting hole 31 is away from the rotating shaft 17 and communicates with the relief groove 32. The limiting hole 31 is used for the pulling member 90 to pass through and to limit the limiting connection end of the pulling member 90. The pulling member 90, which passes through the limiting hole 31 at least partially, is received in the relief groove 32. The opening of the relief groove 32 faces the extrusion member 20.

[0118] Specifically, by placing the limiting hole 31 at the end away from the rotating shaft 17, it is easier to move the eccentric member 30 with less effort. Furthermore, by providing the clearance groove 32 on the eccentric member 30 to accommodate the pulling member 90, it is possible to prevent the pulling member 90 from being clamped between the eccentric member 30 and the pressing member 20. This allows for stable pulling of the pulling member 90, enabling the eccentric member 30 to stably drive the pressing member 20 from the first position to the second position, and to press the locking ring 200 from the first state to the second state.

[0119] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0120] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0121] 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 locking unit for a wire locking ring, characterized in that, include: The main body has a receiving cavity and a first hole, the first hole communicating with the receiving cavity and used for the locking ring and the thread passing through the locking ring to enter and exit the receiving cavity; An extrusion member is disposed within the receiving cavity, and the extrusion member and the main body structure form an extrusion cavity, the extrusion cavity is connected to the first hole and is used to receive a locking ring, and the extrusion member is used to extrude the locking ring received within the extrusion cavity; The thread lock ring has a first state and a second state. When the thread lock ring is in the first state, the thread can be movably passed through the thread lock ring. When the thread lock ring is in the second state, the thread is clamped in the thread lock ring. The first hole includes a first sub-hole and a second sub-hole. The first sub-hole can be used to allow the wire loop in the first state or the second state to pass through, or the first sub-hole and the second sub-hole are connected and can be used to allow the wire loop in the first state or the second state to pass through, and the second sub-hole can be used to allow the wire loop in the second state to pass through.

2. The locking unit for the locking ring according to claim 1, characterized in that, The locking unit for the locking ring also includes a second cutter, which is located on one side of the extrusion member and extends out of the extrusion member to prevent the locking ring located in the extrusion cavity from extending out of the extrusion cavity.

3. The locking unit for the locking ring according to any one of claims 1-2, characterized in that, The main body includes a tube and a support member. The tube is configured to form the first hole. The support member is disposed in the tube and defines the receiving cavity with the tube. The support member includes a support plate portion. The extrusion chamber is provided with a limiting member, which is located on the extrusion member and / or the support plate. The limiting member is used to guide the locking ring entering the extrusion chamber to be placed along the axial direction of the outer tube. The extruder has a first position and a second position. When the extruder is in the first position, the extruder is away from the support plate portion; when the extruder is in the second position, the extruder is close to the support plate portion. The limiting member is a flexible member, and during the process of the extrusion member moving from the first position to the second position, the limiting member undergoes corresponding elastic deformation. Alternatively, the limiting member is an elastic member, and during the process of the extruder moving from the first position to the second position, the limiting member undergoes corresponding elastic deformation; Alternatively, the limiting member is a limiting post, and the extrusion member or the support plate is provided with a clearance hole corresponding to the limiting member. During the process of the extrusion member moving from the first position to the second position, the limiting member enters the corresponding clearance hole.

4. The locking unit for the wire locking ring according to claim 3, characterized in that, The support member also includes two limiting plate portions, which are disposed opposite to each other on the support plate portion along the axial direction of the tube body, and form a first limiting groove with the support plate portion; The extrusion member is disposed in the first limiting groove and forms the extrusion cavity with the support plate, the two limiting plates, and the corresponding inner wall of the tube. The locking unit for the wire lock ring also includes an eccentric member, which is disposed in the receiving cavity and rotatably disposed on the side of the extruder away from the support plate. The eccentric member is used to drive the extruder to extrude the wire lock ring housed in the extrusion cavity.

5. The locking unit for the wire locking ring according to claim 4, characterized in that, It also includes an elastic element disposed within the receiving cavity, which is used to drive the extruder away from the support plate portion; Driven by the elastic member, the extruder also has a third position, in which the extruder moves away from the support plate portion when it is in the third position. The third position is located between the first position and the second position, or the third position is the same as the first position.

6. The locking unit for the locking ring according to claim 5, characterized in that, The tube body includes an outer tube, end plates, and fixing components. The end plates and fixing components are respectively disposed at opposite ends of the outer tube along the axial direction of the outer tube. The fixing member is connected to the support member and is configured to form a first limiting part, and the extrusion member is configured to form a second limiting part. Along the axial direction of the outer tube, the first limiting part is away from the extrusion cavity, and the second limiting part is close to the extrusion cavity. The opposite ends of the elastic member are respectively limited and abutted between the first limiting part and the second limiting part, so that the end of the extrusion member away from the fixing member abuts against the end plate. The end plate is configured to form the first hole.

7. The locking unit for the locking ring according to claim 6, characterized in that, The extrusion member includes a first section and a second section. The first section, together with the corresponding support member and the end plate, defines the extrusion cavity. The second section is close to the fixing member and is configured to form the second limiting part. The eccentric component is rotatably supported on the side of the first section opposite to the extrusion cavity; Alternatively, the body may also be configured to have a second hole for the thread extending from the locking ring to pass through; The support plate is configured to have a second limiting groove, which is located on the side of the extrusion chamber away from the end plate, and the second hole communicates with the bottom of the second limiting groove. The locking unit for the thread lock also includes a first cutter, which is disposed in the second limiting groove. When the extruder is in the second position, the first cutter moves in the second limiting groove toward the extrusion chamber and passes through the second hole to cut the thread passing through the second hole. Alternatively, the body may also be configured to have a second hole for the thread extending from the locking ring to pass through; The support plate is configured to have a second limiting groove, which is located on the side of the extrusion chamber away from the end plate, and the second hole communicates with the bottom of the second limiting groove. The second cutter is located on the side of the extruder facing the support plate. When the extruder is in the first position, the second cutter is away from the second limiting groove. When the extruder is in the second position, the second cutter enters the second limiting groove and cuts the thread passing through the second hole.

8. The locking unit for the locking ring according to claim 7, characterized in that, The elastic element is a metal spring sheet. One end of the metal spring sheet near the first limiting part is pressed against the opening of the second limiting groove to prevent the first cutter from disengaging from the second limiting groove.

9. A locking tangent device, characterized in that, The locking and cutting device includes the locking ring locking unit as described in any one of claims 1-8; and An operating handle and a connecting tube, the connecting tube being connected between the operating handle and the main body of the locking ring unit, and located at the end of the main body away from the first hole; The locking unit for the wire lock ring further includes a pulling member, which passes through the connecting tube and is connected between the operating handle and the eccentric member. Under the drive of the operating handle, the pulling member pulls the eccentric member of the locking unit to rotate, thereby driving the extruder to extrude the wire lock ring housed in the extrusion chamber.

10. The locking tangent device according to claim 9, characterized in that, The eccentric component is rotatably supported against the side of the extruder opposite to the extrusion chamber via a rotating shaft; The eccentric component is provided with a limiting hole and a relief groove. The limiting hole is away from the rotating shaft and communicates with the relief groove. The limiting hole is used for the pulling component to pass through and to limit the limiting connection end of the pulling component. The pulling component, which passes through the limiting hole at least partially, is received in the relief groove. The opening of the relief groove faces the extrusion component.

Images