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 eccentric part is arranged on the side, away from the extrusion cavity, of the extrusion part, the extrusion part is driven to move so that the cavity body of the extrusion cavity can be gradually reduced to extrude the thread locking ring till the thread locking ring clamps and fixes a thread, and in the process that the thread locking ring enters the extrusion cavity and is extruded in place, the thread locking ring can be tightly pressed; the thread locking ring cannot move relative to the thread locking ring locking unit, so that the situation that the healing time of sutured tissue is prolonged due to the fact that the distance between the thread locking ring and the tissue suturing position is increased, an implant is increased can be avoided, and the situation that the thread locking ring moves away from the sutured tissue in the process of gradually clamping a suture is avoided. At the same time, the problems that the implanted suture is too long, and after the suture is cut off, 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 exist.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a locking wire ring locking unit and a locking wire cutting device. Background Art

[0002] The function of the locking and cutting device is to compress the locking ring set 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.

[0003] In the process of locking surgical sutures, the existing locking thread cutting device usually moves with the locking member toward the suture position away from the suture extending out of the tissue, that is, the locking thread ring moves along the axial direction of the tube body of the locking thread cutting device toward the suture tissue position, resulting in an increase in the distance between the locking thread ring and the suture position, causing the suture position to loosen, resulting in poor suture effect, and even the risk of the suture pulling the suture tissue as the distance between the locking thread ring and the suture position increases. Therefore, the existing locking thread ring locking thread cutting device needs to be improved. Summary of the invention

[0004] The main purpose of the present application is to provide a locking wire ring locking unit and a locking and cutting device to solve the problem in the prior art that the locking wire ring moves away from the suture tissue position when being compressed to lock the surgical suture.

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

[0006] A main body, wherein the main body is structured to form a receiving cavity and a first hole, wherein the first hole is connected to the receiving cavity and is used for the locking wire ring and the suture threaded through the locking wire ring to enter and exit the receiving cavity;

[0007] An extrusion piece, the extrusion piece is arranged in the accommodating cavity, and the extrusion piece and the main body structure form an extrusion cavity, the extrusion cavity is connected to the first hole and is used to accommodate the locking wire ring;

[0008] An eccentric member, the eccentric member is arranged in the accommodating cavity and abuts against a side of the extruding member away from the extruding cavity;

[0009] Wherein, under the driving of the eccentric member, the extrusion member squeezes the locking wire ring accommodated in the extrusion cavity.

[0010] Further, the main body comprises a tube, and the tube is configured to form the first hole; and

[0011] A support member, the support member is arranged in the tube body and defines the accommodating cavity with the tube body, the support member comprises a support plate portion and two limiting plate portions, the two limiting plate portions are arranged on the support plate portion along the axial direction of the tube body and are formed with the support plate portion to form a first limiting groove;

[0012] Wherein, the extrusion member is arranged in the first limiting groove, and defines the extrusion cavity with the support plate portion, the two limiting plate portions, and the corresponding inner wall of the tube body, and the eccentric member is rotatably arranged on a side of the extrusion member away from the support plate portion;

[0013] Driven by the eccentric member, the extrusion member has a first position and a second position. When the extrusion member is in the first position, the extrusion member is away from the support plate portion. When the extrusion member is in the second position, the extrusion member is close to the support plate portion.

[0014] Furthermore, it also includes an elastic member, which is arranged in the accommodating cavity and is used to drive the extruding member away from the supporting plate portion;

[0015] Under the drive of the elastic member, the extrusion member also has a third position. When the extrusion member is in the third position, the extrusion member is away from the supporting plate portion.

[0016] The third position is between the first position and the second position, or the third position is the same position as the first position.

[0017] Further, the tube body comprises an outer tube, an end plate and a fixing member, and the end plate and the fixing member are respectively arranged at opposite ends of the outer tube along the axial direction of the outer tube;

[0018] In which, the fixing member is connected to the supporting member and is constructed to form a first limiting portion, and the extrusion member is constructed to form a second limiting portion. Along the axial direction of the outer tube, the first limiting portion is away from the extrusion cavity, and the second limiting portion is close to the extrusion cavity. The opposite ends of the elastic member are respectively limited and abutted between the first limiting portion and the second limiting portion, so that one end of the extrusion member away from the fixing member abuts against the end plate, and the end plate is constructed to form the first hole.

[0019] Further, the extrusion member includes a first section and a second section, the first section and the corresponding support member and the end plate define the extrusion cavity, the second section is close to the fixing member, and the second section is structured to form the second limiting portion;

[0020] The eccentric piece is rotatably held against a side of the first section facing away from the extrusion chamber.

[0021] Furthermore, the main body is also structured to be formed with a second hole, and the second hole is used for the suture extending out of the locking wire ring to pass through;

[0022] The support plate portion is structured to form a second limiting groove, the second limiting groove is located on a side of the extrusion cavity away from the end plate, and the second hole is connected to the bottom of the second limiting groove;

[0023] The lockwire ring locking unit also includes a first cutter, which is arranged in the second limiting groove. When the extrusion member is in the second position, the first cutter moves in the second limiting groove toward the extrusion cavity and crosses the second hole to cut the suture passing through the second hole.

[0024] Furthermore, the elastic member is a metal spring sheet, and one end of the metal spring sheet close to the first limiting portion is pressed against a notch of the second limiting groove to limit the first cutter from leaving the second limiting groove.

[0025] Furthermore, the main body is also structured to be formed with a second hole, and the second hole is used for the suture extending out of the locking wire ring to pass through;

[0026] The support plate portion is structured to form a second limiting groove, the second limiting groove is located on a side of the extrusion cavity away from the end plate, and the second hole is connected to the bottom of the second limiting groove;

[0027] The lock wire ring locking unit further comprises a second cutter, which is arranged on a side of the extrusion member facing the support plate portion, and the second cutter extends out of the extrusion member to prevent the lock wire ring located in the extrusion cavity from extending out of the extrusion cavity;

[0028] Wherein, when the extrusion member is in the first position, the second cutter is away from the second limiting groove, and when the extrusion member is in the second position, the second cutter enters the second limiting groove and cuts off the suture passing through the second hole.

[0029] Furthermore, a limiting member is provided in the extrusion cavity, and the limiting member is provided on the extrusion member and / or the support plate portion, and the limiting member is used to guide the locking wire ring entering the extrusion cavity to be placed along the axial direction of the outer tube;

[0030] Wherein, the limiting member is a flexible member, and in the process that the extruding member moves from the first position to the second position, the limiting member undergoes elastic deformation accordingly;

[0031] Alternatively, the limiting member is an elastic member, and during the process in which the extruding member moves from the first position to the second position, the limiting member undergoes elastic deformation accordingly;

[0032] Alternatively, the limiting member is a limiting column, and the extrusion member or the support plate portion is provided with an avoidance hole corresponding to the limiting member, and when the extrusion member moves from the first position to the second position, the limiting member enters the corresponding avoidance hole.

[0033] Furthermore, the locking ring has a first state and a second state. When the locking ring is in the first state, the suture can be movably passed through the locking ring. When the locking ring is in the second state, the suture is clamped on the locking ring.

[0034] The first hole includes a first sub-hole and a second sub-hole, the first sub-hole can be used for the locking wire ring in the first state or the second state to pass through, or the first sub-hole is connected to the second sub-hole and can be used for the locking wire ring in the first state or the second state to pass through, and the second sub-hole can be used for the locking wire ring in the second state to pass through;

[0035] Alternatively, the first hole includes a first sub-hole and a second sub-hole, the first sub-hole is one of a semicircular hole, a semi-elliptical hole, a rectangular hole, and a trapezoidal hole, and the second sub-hole is a rectangular hole; wherein, the first sub-hole and the second sub-hole are connected to form the first hole, and the first sub-hole can be used for the passage of a locking wire ring in the first state or the second state, or the first sub-hole is connected to the second sub-hole and can be used for the passage of a locking wire ring in the first state or the second state, and the second sub-hole can be used for the passage of a locking wire ring in the second state.

[0036] On the other hand, the present application further provides a locking and cutting device, the locking and cutting device comprising any one of the locking wire ring locking units described above; and

[0037] An operating handle and a connecting pipe, wherein the connecting pipe is connected between the operating handle and the main body of the lockwire ring locking unit and is located at an end of the main body away from the first hole;

[0038] Wherein, the locking wire ring locking unit also includes a pulling member, which passes through the connecting tube and is connected between the operating handle and the eccentric member. The pulling member pulls the eccentric member to rotate under the drive of the operating handle to drive the extrusion member to squeeze the locking wire ring accommodated in the extrusion cavity.

[0039] Furthermore, the eccentric member is rotatably supported on a side of the extrusion member away from the extrusion chamber via a rotating shaft;

[0040] Among them, the eccentric piece is provided with a limiting hole and an avoidance groove, the limiting hole is away from the rotating shaft and connected with the avoidance groove, the limiting hole is used for the pulling piece to pass through and limit the limiting connection end of the pulling piece, and the pulling piece that at least partially passes through the limiting hole is accommodated in the avoidance groove, and the opening of the avoidance groove faces the extrusion piece.

[0041] In the lockwire ring locking unit of the present application, the extrusion piece is arranged in the accommodating cavity formed by the main body structure, and the extrusion cavity is formed with the main body structure, and the extrusion cavity is arranged to be connected with the first hole, so that the lockwire ring with the suture passed through can enter and exit the extrusion cavity from the first hole, and the eccentric piece is arranged on the side of the extrusion piece away from the extrusion cavity, so that under the drive of the eccentric piece, the extrusion piece moves to make the cavity body of the extrusion cavity gradually smaller to squeeze the accommodated lockwire ring, until the suture passed through the lockwire ring is clamped and fixed by the squeezed lockwire ring, and in the lockwire ring During the process from the wire loop entering the extrusion cavity to being squeezed into place, the locking wire loop accommodated in the extrusion cavity does not move relative to the locking wire loop locking unit. Therefore, it can avoid the increase in the distance between the locking wire loop and the tissue suture position, which leads to an increase in the implant and an increase in the healing time of the sutured tissue. It can also avoid the locking wire loop moving away from the sutured tissue in the process of gradually clamping the suture, which poses a risk of straining the sutured tissue. At the same time, it effectively solves the problem that the implanted suture is too long. After the suture is cut, the implanted suture retreats into the sutured tissue, causing the sutured tissue to not fit tightly, further increasing the healing time of the sutured tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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:

[0043] Figure 1 It is an overall schematic diagram of a locking wire ring locking unit in one embodiment disclosed in the present application.

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

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

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

[0047] Figure 5 for Figure 1 A cross-sectional view along the A-A1 direction shows that the extrusion member is in the first position and the wire locking ring is limitedly accommodated in the extrusion cavity.

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

[0049] Figure 7 It is an exploded schematic diagram of a locking wire ring locking unit in one embodiment disclosed in the present application.

[0050] Figure 8 It is a schematic structural diagram of a support member in an embodiment disclosed in the present application.

[0051] Fig. 9 It is a schematic diagram of the structure of an extrusion part in an embodiment disclosed in the present application.

[0052] Fig.10 It is a cross-sectional view of a locking and cutting device in one embodiment disclosed in the present application.

[0053] Fig.11 It is a schematic structural diagram of an eccentric member in an embodiment disclosed in the present application.

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

[0055] The locking wire ring locking unit 100, the main body 10, the accommodating chamber 11, the first hole 12, the first sub-hole 121, the second sub-hole 122, the tube body 13, the outer tube 131, the end plate 132, the fixing member 133, the fixing hole 134, the support member 14, the support plate portion 141, the limiting plate portion 142, the first limiting groove 143, the second limiting groove 144, the first limiting portion 15, the second hole 16, the rotating shaft 17, the avoidance hole 18, the extrusion member 20, the second The limiting portion 21, the first section 22, the second section 23, the first plate portion 231, the second plate portion 232, the eccentric member 30, the limiting hole 31, the avoidance groove 32, the extrusion chamber 40, the elastic member 50, the first cutter 60, the second cutter 70, the limiting member 80, the pulling member 90, the locking wire ring 200, the through hole 210, the suture 300, the operating handle 400, the fixed arm 410, the movable arm 420, the connecting tube 500, and the locking and cutting device 1000. DETAILED DESCRIPTION

[0056] 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.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] See also Figure 1-4 As shown, on the one hand, the present application provides a locking wire ring locking unit 100, which is used to squeeze the locking wire ring 200 so that the suture 300 passing through the locking wire ring 200 is clamped and fixed. The locking wire ring 200 has a first state and a second state. When the locking wire ring 200 is in the first state, the suture 300 can be movably passed through the locking wire ring 200, and when the locking wire ring 200 is in the second state, the suture 300 is clamped on the locking wire ring 200.

[0060] Furthermore, the lockwire ring locking unit 100 includes a main body 10, an extrusion member 20 and an eccentric member 30. The extrusion member 20 and the eccentric member 30 are respectively arranged in the main body 10, and the eccentric member 30 rotates along the rotating shaft 17 in the main body 10 to drive the extrusion member 20 to move, and cooperates with the main body 10 to extrude the lockwire ring 200, so that the suture 300 passing through the lockwire ring 200 is clamped and fixed by the lockwire ring 200.

[0061] Furthermore, the main body 10 is structured to form a receiving cavity 11 and a first hole 12 , wherein the first hole 12 is connected to the receiving cavity 11 and is used for the locking wire ring 200 and the suture 300 passing through the locking wire ring 200 to enter and exit the receiving cavity 11 .

[0062] Furthermore, after the tissue is sutured, the suture 300 needs to be fixed, and the excess suture 300 after fixation needs to be cut off, thereby completing the entire in-vivo suturing process. Since in-vivo suturing is not convenient for direct knotting, passing the suture 300 through the locking ring 200 and clamping the squeezed locking ring 200 becomes a convenient and efficient way to fix the suture 300.

[0063] Specifically, after the suturing of the tissue is completed, the locking wire ring 200 and the suture 300 passing through the locking wire ring 200 will enter the accommodating cavity 11 through the first hole 12, and after the locking wire ring 200 is squeezed into place and the passed suture 300 is clamped and fixed, the excess suture 300 will be cut off, and the squeezed locking wire ring 200 and the clamped suture 300 will be withdrawn from the accommodating cavity 11 through the first hole 12.

[0064] For further information, see Figure 2 , 5 As shown in FIG. 6 , the extrusion member 20 is disposed in the accommodating cavity 11 , and the extrusion member 20 and the main body 10 are configured to form an extrusion cavity 40 , which is connected to the first hole 12 and is used to accommodate the locking wire ring 200 .

[0065] The eccentric member 30 is also disposed in the accommodating cavity 11 and abuts against the side of the extrusion member 20 away from the extrusion cavity 40. Wherein, under the drive of the eccentric member 30, the extrusion member 20 has a first position and a second position. When the extrusion member 20 is in the first position, the extrusion member 20 is close to the rotation center of the eccentric member 30. At this time, the cavity volume of the extrusion cavity 40 is the largest, and the locking wire loop 200 that is not squeezed can directly enter and exit the extrusion cavity 40 from the first hole 12. When the extrusion member 20 is in the second position, the extrusion member 20 is away from the rotation center. At this time, the cavity volume of the extrusion cavity 40 is compressed, so that the locking wire loop 200 accommodated in the extrusion cavity 40 is squeezed into place and the suture 300 passing through is clamped and fixed.

[0066] Driven by the eccentric member 30, when the extrusion member 20 moves from the first position to the second position, the locking wire ring 200 accommodated in the extrusion cavity 40 does not move relative to the locking wire ring locking unit 100. Therefore, the increase in the distance between the locking wire ring 200 and the tissue suturing position, which leads to an increase in the implant and an increase in the healing time of the sutured tissue, can be avoided; and the locking wire ring 200 is avoided from moving away from the sutured tissue in the process of gradually clamping the suture 300, which poses a risk of straining the sutured tissue. At the same time, it effectively solves the problem that the implanted suture 300 is too long, and after the suture 300 is cut off, the implanted suture 300 retreats into the sutured tissue, causing the sutured tissue to not fit tightly, further increasing the healing time of the sutured tissue.

[0067] For further information, see Figure 4 , 7 As shown in FIG. 8 , the main body 10 includes a tube body 13 and a support member 14. The tube body 13 is configured to form the first hole 12. The support member 14 is disposed in the tube body 13 and defines the accommodating cavity 11 with the tube body 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 arranged on the support plate portion 141 along the axial direction of the tube body 13 , and are structured with the support plate portion 141 to form a first limiting groove 143 .

[0069] The extrusion member 20 is disposed in the first limiting groove 143, and defines the extrusion cavity 40 with 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 in the first limiting groove 143, when the extrusion member 20 moves between the first position and the second position, the first limiting groove 143 can be used for limiting and guiding, so as to improve the movement accuracy of the extrusion member 20 and improve the extrusion efficiency of the lock wire ring 200.

[0070] Further, the eccentric member 30 is rotatably disposed on a side of the extrusion member 20 away from the support plate portion 141. When the extrusion member 20 is in the first position, the extrusion member 20 is away from the support plate portion 141. At this time, the cavity volume of the extrusion cavity 40 is the largest, and the unextruded lockwire ring 200 can smoothly enter and exit the extrusion cavity 40 from the first hole 12. When the extrusion member 20 is in the second position, the extrusion member 20 is close to the support plate portion 141. At this time, the cavity volume of the extrusion cavity 40 is compressed, so that the lockwire ring 200 accommodated in the extrusion cavity 40 is squeezed into place, and the passed suture 300 is clamped and fixed.

[0071] For further information, see Figure 2 , 5 -6, the locking wire ring locking unit 100 also includes an elastic member 50, and the elastic member 50 is used to drive the extrusion member 20 to move from the second position to the third position, so that the locking wire ring 200 can exit the extrusion cavity 40 together with the locked suture 300 after being squeezed into place.

[0072] Furthermore, the elastic member 50 is disposed in the accommodating cavity 11, and is used to drive the extrusion member 20 away from the support plate portion 141, so that the extrusion member 20 moves from the second position to the third position, so that the locking wire ring 200 squeezed into place can be quickly withdrawn from the first hole 12 after the suture is cut off, or to facilitate the extrusion of the next locking wire ring 200.

[0073] In an embodiment of the present application, the elastic member 50 may have sufficient elastic driving force to drive the extrusion member 20 to move from the second position to the third position. The third position is the same as the first position, so that the lockwire ring locking unit 100 can be reused.

[0074] In the embodiment of the present application, the elastic member 50 may also have a certain elastic driving force to drive the extrusion member 20 to move from the second position to the third position. The third position is between the first position and the second position, and when the extrusion member 20 is in the third position, the locking wire ring 200 in the first state cannot enter the extrusion cavity 40, and the locking wire ring 200 in the second state can exit the extrusion cavity 40.

[0075] For further information, see 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 arranged at opposite ends of the outer tube 131 along the axial direction of the outer tube 131 to cooperate with the outer tube 131 to define the accommodating cavity 11. The end plate 132 is configured to form the first hole 12.

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

[0077] Along the axial direction of the outer tube 131, the first limiting portion 15 is away from the extrusion cavity 40, and the second limiting portion 21 is close to the extrusion cavity 40. The opposite ends of the elastic member 50 are respectively limited and abutted between the first limiting portion 15 and the second limiting portion 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, so that the extrusion member 20 is also limited between the elastic member 50 and the end plate 132 along the axial direction of the outer tube 131. 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 move from the second position to the first position under the drive of the elastic member 50, or move from the second position to the third position close to the first position.

[0078] For further information, see Figure 5-6 As shown in Figures 9 and 10, the extrusion member 20 includes a first section 22 and a second section 23. The extrusion cavity 40 is defined between the first section 22 and the corresponding support member 14 and the end plate 132. Specifically, the extrusion cavity 40 is defined between the first section 22 and the corresponding support plate portion 141, the two limit plate portions 142 and the end plate 132. The first hole 12 is connected to the extrusion cavity 40, and when the extrusion member 20 is in the second position, the extrusion member 20 blocks at least part of the first hole 12.

[0079] The second section 23 is close to the fixing member 133, and the second section 23 is structured to form the second limiting portion 21. Specifically, the second section 23 includes a first plate portion 231 and two second plate portions 232, wherein the first plate portion 231 is arranged opposite to the support plate portion 141 and approaches the support plate portion 141 under the drive of the eccentric member 30, and the two second plate portions 232 are respectively connected to the opposite sides of the first plate portion 231, and together with the first plate portion 231 and the end surface of the first section 22, form the second limiting portion 21, and the second limiting portion 21 is a limiting groove-shaped structure. The elastic member 50 is limitedly held in the limiting groove corresponding to one end of the second limiting portion 21.

[0080] Furthermore, each of the second plate portions 232 corresponds to a limiting plate portion 142, and a side of each of the second plate portions 232 that is away from another second plate portion 232 is in contact with the corresponding limiting plate portion 142, thereby increasing the area of ​​mutual limitation between the extrusion member 20 and the first limiting groove 143, so that the extrusion member 20 can move more stably in the first limiting groove 143 toward or away from the support plate portion 141.

[0081] Furthermore, the eccentric member 30 can be rotatably held 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 direction close to the support plate portion 141 to squeeze the locking wire ring 200 with an extrusion force, so as to effectively squeeze the locking wire ring 200 into place.

[0082] For further information, see Figure 2 , 4 As shown in FIGS. 8 and 9 , the main body 10 is further structured to form a second hole 16. The second hole 16 is used for passing the suture 300 extending out of the locking wire ring 200. After the suture 300 is fixed by the locking wire ring 200, the excess suture 300 after cutting can be taken out from the second hole 16.

[0083] Furthermore, the support plate portion 141 is structured to form a second limiting groove 144. The second limiting groove 144 is located at a side of the extrusion chamber 40 away from the end plate 132, and the second hole 16 is connected to the bottom of the second limiting groove 144. The suture 300 passing through the locking wire ring 200 will sequentially pass through the second limiting groove 144 and the second hole 16 and extend out of the outer tube 131.

[0084] In the implementation of this application, please refer to Figure 5-6 As shown, the lockwire ring locking unit 100 further includes a first cutter 60. The first cutter 60 is disposed in the second limiting groove 144. When the extrusion member 20 is in the second position, the first cutter 60 moves in the second limiting groove 144 toward the extrusion cavity 40 and passes over the second hole 16 to cut the suture 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 stretched state. When the first cutter 60 passes over the second hole 16, the cutting edge of the first cutter 60 will directly cut the suture 300, thereby completing the cutting of the excess suture 300.

[0086] Furthermore, the elastic member 50 can be a spring, a metal shrapnel, etc. made of medical grade materials, and can drive the extrusion member 20 to reset from the second position to the first position, or move from the second position to the third position close to the first position.

[0087] Preferably, in the embodiment of the present application, the elastic member 50 is a metal spring, so that the elastic member 50 can realize the reset movement of the extrusion 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, under the limiting action of the first limiting portion 15 and the second limiting portion 21, support the extrusion member 20 toward the end plate 132, so that the pressing member will not move along the axial direction of the outer tube 131.

[0088] Furthermore, one end of the metal spring sheet close to the first limiting portion 15 is simultaneously pressed against the notch of the second limiting groove 144 to limit the first cutter 60 from disengaging from the second limiting groove 144, so that the metal spring sheet can also limit the first cutter 60 at the same time, preventing the first cutter 60 from disengaging from the second limiting groove 144, and preventing the first cutter 60 from sliding freely in the second limiting groove 144, resulting in the suture 300 being cut by the first cutter 60 before being clamped and fixed by the locking ring 200, causing the clamping and fixing of the suture 300 to fail.

[0089] Further, in an embodiment of the present application, after the extrusion member 20 completes the extrusion of the locking wire ring 200 , the first cutter 60 is driven by an external force to move independently toward the extrusion cavity 40 to shear the excess suture 300 .

[0090] In the implementation of this application, please refer to Figure 5-6 As shown, the lockwire ring locking unit 100 further includes a second cutter 70. The second cutter 70 is disposed on a side of the extrusion member 20 facing the support plate portion 141, and the second cutter 70 moves synchronously with the extrusion member 20, and after the extrusion member 20 squeezes the lockwire ring 200 into place, the cutting edge of the second cutter 70 approaches the excess suture 300 extending out of the lockwire ring 200 and passing through the second hole 16, and under the further drive of the eccentric member 30, the extrusion member 20 drives the second cutter 70 to continue to move until the second cutter 70 cuts the excess suture 300 again.

[0091] Further, the second cutter 70 extends out of the extrusion member 20 to block the lock wire ring 200 located in 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 extrusion member 20. Therefore, in the embodiment of the present 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, so as to cooperate with the extrusion cavity 40 to form a limiting cavity, thereby limiting the lock wire ring 200 located in the extrusion cavity 40, so that the lock wire ring 200 will not fall out of the extrusion cavity 40, so that when the extrusion member 20 moves to the second position, the lock wire ring 200 can be completely squeezed into place, so that the part of the suture 300 passing through the lock wire ring 200 is clamped and fixed, thereby increasing the clamping length of the lock wire ring 200 on the suture 300 and improving the stability of fixing the suture 300.

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

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

[0094] For further information, see Figure 2 As shown, a stopper 80 may be further provided in the extrusion cavity 40. The stopper 80 is provided on the extrusion member 20 and / or the support plate portion 141, and the stopper 80 is used to guide the lock wire ring 200 entering the extrusion cavity 40 to be placed along the axial direction of the outer tube 131. This further reduces the excess suture 300 remaining after passing through the lock wire ring 200.

[0095] Furthermore, the limit member 80 is arranged in the extrusion cavity 40 along the axial direction of the outer tube 131 to limit the first central axis of the locking ring 200 entering the extrusion cavity 40 to be parallel to the second central axis of the outer tube 131, thereby effectively promoting the locking ring 200 to be placed in the extrusion cavity 40 parallel to the second central axis direction.

[0096] In the embodiment of the present application, the limiting member 80 is a flexible member, and when the extrusion member 20 moves from the first position to the second position, the limiting member 80 undergoes elastic deformation accordingly.

[0097] Furthermore, the provision of the flexible member also has a certain buffering effect.

[0098] In an embodiment of the present application, the limiting member 80 is an elastic member, and when the extruding member 20 moves from the first position to the second position, the limiting member 80 undergoes elastic deformation accordingly.

[0099] Furthermore, the elastic component has a buffering effect, and cooperates with the elastic member 50 to drive the extrusion member 20 to return 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 implementation of this application, please refer to Figure 2 As shown, the limiting member 80 is a limiting column, and the extrusion member 20 or the support plate portion 141 is provided with an avoidance hole 18 corresponding to the limiting member 80. When the extrusion member 20 moves from the first position to the second position, the limiting member 80 enters the corresponding avoidance hole 18.

[0101] Furthermore, the setting of the limit column and the avoidance hole 18 also has 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] For further information, see 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 to allow the locking wire ring 200 in the first state or the second state to pass through, and the second sub-hole 122 can be used to allow the locking wire ring 200 in the second state to pass through.

[0103] The locking wire ring 200 in the first state has a hollow through hole 210, and the suture 300 passes through the locking wire ring 200 through the through hole 210. The locking wire ring 200 in the second state has its through hole 210 closed because the locking wire ring 200 is squeezed into place. Therefore, the locking wire ring 200 in the second state is a flat structure.

[0104] Specifically, the first sub-hole 121 and the second sub-hole 122 are connected to each other, and respectively connect the extrusion cavity 40 with 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, and the locking wire ring 200 in the first state cannot enter or exit the extrusion cavity 40 through the second sub-hole 122, while the locking wire ring 200 in the second state can exit the extrusion cavity 40 from the first sub-hole 121 or the second sub-hole 122.

[0105] Further, the second sub-hole 122 is a rectangular hole or a trapezoidal hole, and the locking wire ring 200 in the first state cannot enter or exit the extrusion cavity 40 from the second sub-hole 122, and the locking wire ring 200 in the second state can directly exit the extrusion cavity 40 from the second sub-hole. The first sub-hole 121 is one of a semicircular hole, a semi-elliptical hole, a rectangular hole, and a trapezoidal hole, and the first sub-hole 121 is connected with the second sub-hole 122 so that the locking wire ring 200 in the first state can enter the extrusion cavity 40 from the first sub-hole 121, or enter the extrusion cavity 40 from the connection between the first sub-hole 121 and the second sub-hole 122.

[0106] Therefore, by providing the first hole 12 with a special-shaped structure, it is possible to ensure that the lockwire ring 200 smoothly enters the extrusion chamber 40 from the first sub-hole 121, while reducing the risk of the lockwire ring 200 exiting the extrusion chamber 40, thereby reducing the difficulty of operation. After the extrusion is completed, it is possible to facilitate the lockwire ring 200 in the second state to exit the extrusion chamber 40 from the first sub-hole 121 or the second sub-hole 122, thereby improving the efficiency of the lockwire ring 200 in the second state to exit the extrusion chamber 40.

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

[0108] On the other hand, see Fig.10 As shown, the present application further provides a locking and cutting device 1000. The locking and cutting device 1000 includes the above-mentioned locking wire ring locking unit 100. Therefore, the locking and cutting device 1000 has the beneficial effects of any of the above-mentioned embodiments, which will not be repeated here.

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

[0110] For further information, see Figure 5-6 As shown in Figures 10 and 10, the lockwire ring locking 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. The pulling member 90 pulls the eccentric member 30 to rotate under the drive of the operating handle 400 to drive the extrusion member 20 to move from the first position to the second position.

[0111] Specifically, the operating handle 400 may be a trigger-type operating handle 400, wherein the trigger-type operating handle 400 includes a fixed arm 410 and a movable arm 420, wherein the movable arm 420 is rotatably hinged on 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 close to the fixed arm 410, the eccentric member 30 is driven to move, thereby driving the extrusion member 20 to move from the first position to the second position, and by releasing the movable arm 420, the extrusion member 20 is driven by the elastic member 50 to reset from the second position to the first position, or move from the second position to the third position close to the first position.

[0112] Alternatively, the operating handle 400 may also be a rotary operating handle 400, wherein the rotary operating handle 400 may include an outer shell, a hand screw, a screw and a slider. The outer shell is fixedly connected to the connecting pipe 500 away from the lock wire ring locking unit 100, the slider and the screw are respectively arranged in the outer shell, and the slider is threadedly connected to the screw, and the hand screw is rotatably arranged on the outer shell and extends into the outer shell to be connected to the screw.

[0113] In the embodiment of the present application, the screw rotates in the housing and does not move axially along the rotation axis 17 where it is located, and the slider moves along the rotation axis 17. The pulling member 90 passing through the connecting tube 500 is connected to the slider, and the screw is driven to rotate by rotating the hand screw, so that the slider moves along the axial direction of the screw, so that the movement of the slider drives the pulling member 90 to drive the eccentric member 30 to move, and then the extrusion member 20 moves between the first position and the second position.

[0114] In the embodiment of the present application, the slider is fixedly disposed in the outer shell and remains stationary relative to the outer shell. The screw is rotated under the rotation of the hand screw and moves along the direction of its rotation axis 17. The pulling member 90 passing through the connecting tube 500 is connected to the end of the screw away from the hand screw. The screw is driven to rotate by rotating the hand screw so that the screw moves axially along the rotation axis 17, thereby driving the pulling member 90 to drive the eccentric member 30 to move, and then the extrusion member 20 moves between the first position and the second position.

[0115] Furthermore, a fixing hole 134 is provided on the fixing member 133 , and one 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 held against a side of the extrusion member 20 away from the extrusion chamber 40 via the rotating shaft 17 , and the rotating shaft 17 is fixed inside the outer tube 131 .

[0117] For further information, see Fig.11 As shown, the eccentric member 30 is provided with a limiting hole 31 and an avoidance groove 32. The limiting hole 31 is away from the rotating shaft 17 and communicates with the avoidance 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. Moreover, the pulling member 90 that at least partially passes through the limiting hole 31 is accommodated in the avoidance groove 32, and the opening of the avoidance groove 32 faces the extrusion member 20.

[0118] Specifically, by arranging the limiting hole 31 at the end away from the rotating shaft 17, it is possible to save more effort when pulling the eccentric member 30 to move. And by arranging the avoidance 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 extruding member 20, so that the pulling member 90 can be stably pulled, so that the eccentric member 30 stably drives the extruding member 20 to move from the first position to the second position, and squeezes the locking ring 200 from the first state to the second state.

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

[0120] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0121] 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 locking wire ring locking unit, characterized in that: include: A main body, wherein the main body is structured to form a receiving cavity and a first hole, wherein the first hole is connected to the receiving cavity and is used for the locking wire ring and the suture threaded through the locking wire ring to enter and exit the receiving cavity; An extrusion piece, the extrusion piece is arranged in the accommodating cavity, and the extrusion piece and the main body structure form an extrusion cavity, the extrusion cavity is connected to the first hole and is used to accommodate the locking wire ring; An eccentric member, the eccentric member is arranged in the accommodating cavity and abuts against a side of the extruding member away from the extruding cavity; Wherein, under the driving of the eccentric member, the extrusion member squeezes the locking wire ring accommodated in the extrusion cavity.

2. The wire lock ring locking unit according to claim 1, characterized in that: The main body comprises a tube, the tube is configured to form the first hole; and A support member, the support member is arranged in the tube body and defines the accommodating cavity with the tube body, the support member comprises a support plate portion and two limiting plate portions, the two limiting plate portions are arranged on the support plate portion along the axial direction of the tube body and are formed with the support plate portion to form a first limiting groove; Wherein, the extrusion member is arranged in the first limiting groove, and defines the extrusion cavity with the support plate portion, the two limiting plate portions, and the corresponding inner wall of the tube body, and the eccentric member is rotatably arranged on a side of the extrusion member away from the support plate portion; Driven by the eccentric member, the extrusion member has a first position and a second position. When the extrusion member is in the first position, the extrusion member is away from the support plate portion; when the extrusion member is in the second position, the extrusion member is close to the support plate portion.

3. The wire lock ring locking unit according to claim 2, characterized in that: It also includes an elastic member, which is arranged in the accommodating cavity and is used to drive the extruding member away from the supporting plate portion; Under the drive of the elastic member, the extrusion member also has a third position. When the extrusion member is in the third position, the extrusion member is away from the supporting plate portion. The third position is between the first position and the second position, or the third position is the same position as the first position.

4. The locking wire ring locking unit according to claim 3, characterized in that: The tube body comprises an outer tube, an end plate and a fixing member, wherein the end plate and the fixing member are respectively arranged at opposite ends of the outer tube along the axial direction of the outer tube; In which, the fixing member is connected to the supporting member and is constructed to form a first limiting portion, and the extrusion member is constructed to form a second limiting portion. Along the axial direction of the outer tube, the first limiting portion is away from the extrusion cavity, and the second limiting portion is close to the extrusion cavity. The opposite ends of the elastic member are respectively limited and abutted between the first limiting portion and the second limiting portion, so that one end of the extrusion member away from the fixing member abuts against the end plate, and the end plate is constructed to form the first hole.

5. The locking wire ring locking unit according to claim 4, characterized in that: The extrusion member includes a first section and a second section, the first section and the corresponding support member and the end plate define the extrusion cavity, the second section is close to the fixing member, and the second section is structured to form the second limiting portion; The eccentric piece is rotatably held against a side of the first section facing away from the extrusion chamber.

6. The locking wire ring locking unit according to claim 4, characterized in that: The main body is also configured to be formed with a second hole, the second hole being used for passing a suture extending out of the locking wire loop; The support plate portion is structured to form a second limiting groove, the second limiting groove is located on a side of the extrusion cavity away from the end plate, and the second hole is connected to the bottom of the second limiting groove; The lockwire ring locking unit also includes a first cutter, which is arranged in the second limiting groove. When the extrusion member is in the second position, the first cutter moves in the second limiting groove toward the extrusion cavity and crosses the second hole to cut the suture passing through the second hole.

7. The locking wire ring locking unit according to claim 6, characterized in that: The elastic member is a metal spring sheet, and one end of the metal spring sheet close to the first limiting portion is pressed against a notch of the second limiting groove to limit the first cutter from leaving the second limiting groove.

8. The wire lock ring locking unit according to claim 4, characterized in that: The main body is also configured to be formed with a second hole, the second hole being used for passing a suture extending out of the locking wire loop; The support plate portion is structured to form a second limiting groove, the second limiting groove is located on a side of the extrusion cavity away from the end plate, and the second hole is connected to the bottom of the second limiting groove; The lock wire ring locking unit further comprises a second cutter, which is arranged on a side of the extrusion member facing the support plate portion, and the second cutter extends out of the extrusion member to prevent the lock wire ring located in the extrusion cavity from extending out of the extrusion cavity; Wherein, when the extrusion member is in the first position, the second cutter is away from the second limiting groove, and when the extrusion member is in the second position, the second cutter enters the second limiting groove and cuts off the suture passing through the second hole.

9. The wire lock ring locking unit according to any one of claims 3 to 8, characterized in that: A limiting member is provided in the extrusion cavity, and the limiting member is provided on the extrusion member and / or the support plate portion, and the limiting member is used to guide the locking wire ring entering the extrusion cavity to be placed along the axial direction of the outer tube; Wherein, the limiting member is a flexible member, and in the process that the extruding member moves from the first position to the second position, the limiting member undergoes elastic deformation accordingly; Alternatively, the limiting member is an elastic member, and during the process in which the extruding member moves from the first position to the second position, the limiting member undergoes elastic deformation accordingly; Alternatively, the limiting member is a limiting column, and the extrusion member or the support plate portion is provided with an avoidance hole corresponding to the limiting member, and when the extrusion member moves from the first position to the second position, the limiting member enters the corresponding avoidance hole.

10. The wire lock ring locking unit according to any one of claims 1 to 8, characterized in that: The locking ring has a first state and a second state. When the locking ring is in the first state, the suture can be movably passed through the locking ring. When the locking ring is in the second state, the suture is clamped on the locking ring. The first hole includes a first sub-hole and a second sub-hole, the first sub-hole can be used for the locking wire ring in the first state or the second state to pass through, or the first sub-hole is connected to the second sub-hole and can be used for the locking wire ring in the first state or the second state to pass through, and the second sub-hole can be used for the locking wire ring in the second state to pass through; Alternatively, the first hole includes a first sub-hole and a second sub-hole, the first sub-hole is one of a semicircular hole, a semi-elliptical hole, a rectangular hole, and a trapezoidal hole, and the second sub-hole is a rectangular hole; wherein the first sub-hole and the second sub-hole are connected to form the first hole, and the first sub-hole is used for allowing a locking wire ring in the first state or the second state to pass through, or the first sub-hole is connected to the second sub-hole and can be used for allowing a locking wire ring in the first state or the second state to pass through, and the second sub-hole can be used for allowing a locking wire ring in the second state to pass through.

11. A locking and cutting device, characterized in that: The locking and cutting device comprises a locking wire ring locking unit according to any one of claims 1 to 10; and An operating handle and a connecting pipe, wherein the connecting pipe is connected between the operating handle and the main body of the lockwire ring locking unit and is located at an end of the main body away from the first hole; Wherein, the locking wire ring locking unit also includes a pulling member, which passes through the connecting tube and is connected between the operating handle and the eccentric member. The pulling member pulls the eccentric member to rotate under the drive of the operating handle to drive the extrusion member to squeeze the locking wire ring accommodated in the extrusion cavity.

12. The locking thread cutting device according to claim 11, characterized in that: The eccentric member is rotatably supported by the rotating shaft on a side of the extrusion member away from the extrusion chamber; Among them, the eccentric piece is provided with a limiting hole and an avoidance groove, the limiting hole is away from the rotating shaft and connected with the avoidance groove, the limiting hole is used for the pulling piece to pass through and limit the limiting connection end of the pulling piece, and the pulling piece that at least partially passes through the limiting hole is accommodated in the avoidance groove, and the opening of the avoidance groove faces the extrusion piece.

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