Locking ring locking unit and locking cutting device

Abstract

The application discloses a locking ring locking unit and a locking cutting device. In the locking ring locking unit, an eccentric part is arranged on the side of the extrusion part away from the extrusion cavity, and the extrusion part is driven to move so that the cavity of the extrusion cavity gradually becomes smaller to extrude the locking ring, until the locking ring clamps and fixes the suture. In the process that the locking ring enters the extrusion cavity and is extruded into place, the locking ring does not move relative to the locking ring locking unit, so that the distance between the locking ring and the sutured tissue position is increased, the implant is increased, the healing time of the sutured tissue is increased, the locking ring moves away from the sutured tissue during the process of gradually clamping the suture, the sutured tissue is at risk of being pulled, the implanted suture is too long, after the suture is cut, the implanted suture retreats into the sutured tissue, the sutured tissue cannot be closely attached, and the healing time of the sutured tissue is further increased.

Description

TECHNICAL FIELD

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

[0002] The locking and cutting device is used to press the locking ring on the surgical suture to clamp and lock the surgical suture, and then cut the surgical suture at the proximal end of the locking ring to complete the operation.

[0003] In the process of clamping the surgical suture, the existing locking and cutting device usually moves the locking ring and the locking part away from the tissue suture position, i.e. the locking ring moves along the axial direction of the tube body of the locking and cutting device away from the suture position, which increases the distance between the locking ring and the suture position, causing the suture position to be loose, the suture effect to be poor, and even the risk of the suture pulling the sutured tissue as the distance between the locking ring and the suture position increases. Therefore, the existing locking and cutting device needs to be improved. SUMMARY

[0004] The main purpose of the present application is to provide a locking ring locking unit and a locking and cutting device to solve the problem that the locking ring moves away from the suture position when it is pressed to lock the surgical suture.

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

[0006] a main body, the main body is configured to form a receiving cavity and a first hole, the first hole is in communication with the receiving cavity and is used for the locking ring and the surgical suture passing through the locking ring to enter or exit the receiving cavity;

[0007] a pressing member, the pressing member is arranged in the receiving cavity, and the pressing member and the main body are configured to form a pressing cavity, the pressing cavity is in communication with the first hole and is used for accommodating the locking ring;

[0008] an eccentric member, the eccentric member is arranged in the receiving cavity and abuts against one side of the pressing member away from the pressing cavity;

[0009] wherein, under the drive of the eccentric member, the pressing member presses the locking ring accommodated in the pressing cavity.

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

[0011] A support member is arranged in the pipe body and defines the accommodating cavity together with the pipe body. The support member comprises a support plate portion and two limiting plate portions which are oppositely arranged on the support plate portion along the axial direction of the pipe body and are configured to form a first limiting groove together with the support plate portion.

[0012] The extrusion member is arranged in the first limiting groove and defines the extrusion cavity together with the support plate portion, the two limiting plate portions and the corresponding inner wall of the pipe body. The eccentric member is rotatably arranged on the side of the extrusion member which is away from the support plate portion.

[0013] Under the drive of 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] Further, an elastic member is arranged in the accommodating cavity and is used to drive the extrusion member away from the support plate portion.

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

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

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

[0018] The fixing member is connected with the support member and is configured to form a first limiting portion. The extrusion member is configured to form a second limiting portion. Along the axial direction of the outer pipe, 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 abut between the first limiting portion and the second limiting portion, so that the end of the extrusion member which is away from the fixing member abuts the end plate. The end plate is configured to form the first hole.

[0019] Further, the extrusion member comprises a first segment and a second segment. The first segment defines the extrusion cavity together with the corresponding support member and the end plate. The second segment is close to the fixing member, and the second segment is configured to form the second limiting portion.

[0020] The eccentric member is rotatably arranged on the side of the first segment which is away from the extrusion cavity.

[0021] Further, the main body is further configured to form a second hole for the suture of the locking wire ring to pass through;

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

[0023] The locking wire ring locking unit further comprises a first cutter, which is arranged in the second limiting groove. When the extrusion part is in the second position, the first cutter moves in the second limiting groove towards the extrusion cavity and passes through the second hole to cut the suture passing through the second hole.

[0024] Further, the elastic member is a metal spring, which is pressed against the groove opening of the second limiting groove at one end close to the first limiting part, so as to limit the first cutter from leaving the second limiting groove.

[0025] Further, the main body is further configured to form a second hole for the suture of the locking wire ring to pass through;

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

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

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

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

[0030] Wherein, the limiting member is a flexible member, which elastically deforms correspondingly during the movement of the extrusion part from the first position to the second position;

[0031] Alternatively, the limiting member is an elastic member, which elastically deforms correspondingly during the movement of the extrusion part from the first position to the second position;

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

[0033] Further, the locking thread ring has a first state and a second state, and in the case that the locking thread ring is in the first state, the suture is movably arranged in the locking thread ring, and in the case that the locking thread ring is in the second state, the suture is clamped in the locking thread ring.

[0034] The first hole includes a first sub-hole and a second sub-hole, the first sub-hole is used for passing the locking thread ring in the first state or the second state, or the first sub-hole communicates with the second sub-hole and is used for passing the locking thread ring in the first state or the second state, and the second sub-hole is used for passing the locking thread ring in the second state.

[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 communicate to form the first hole, the first sub-hole is used for passing the locking thread ring in the first state or the second state, or the first sub-hole communicates with the second sub-hole and is used for passing the locking thread ring in the first state or the second state, and the second sub-hole is used for passing the locking thread ring in the second state.

[0036] On the other hand, the application also provides a locking and cutting device, which comprises the locking thread ring locking unit of any one of the above.

[0037] The operation handle and the connecting pipe, the connecting pipe is connected between the operation handle and the main body of the locking thread ring locking unit, and is located at the end of the main body away from the first hole.

[0038] The locking thread ring locking unit further comprises a pulling member, the pulling member passes through the connecting pipe and is connected between the operation handle and the eccentric member, and the pulling member drives the eccentric member to rotate under the drive of the operation handle to drive the extrusion member to extrude the locking thread ring accommodated in the extrusion cavity.

[0039] Further, the eccentric member is rotatably supported on the side of the extrusion member away from the extrusion cavity through a rotating shaft.

[0040] The eccentric member is provided with a limiting hole and a avoiding slot, the limiting hole is away from the rotating shaft and communicated with the avoiding slot, the limiting hole is used for the pulling member to pass through and limit the limiting connection end of the pulling member, and the pulling member passing through the limiting hole is accommodated in the avoiding slot, and the opening of the avoiding slot faces the extruding member.

[0041] In the locking ring locking unit of the application, the extruding member is arranged in the accommodating cavity formed by the main body structure, the extruding cavity is formed by the main body structure, the extruding cavity is communicated with the first hole, so that the locking ring with the suture passing through can enter and exit the extruding cavity from the first hole, and the eccentric member is arranged on the side of the extruding member away from the extruding cavity, so that the extruding member moves under the drive of the eccentric member to gradually reduce the cavity of the extruding cavity to extrude the accommodated locking ring, until the locking ring with the suture passing through is clamped and fixed after being extruded, and in the process of the locking ring entering the extruding cavity and being extruded in place, the locking ring accommodated in the extruding cavity does not move relative to the locking ring locking unit, so that the problems of increasing the implant, increasing the healing time of the sutured tissue and the risk of pulling the sutured tissue due to the increase of the distance between the locking ring and the sutured tissue are avoided, and the problem of the implanted suture retracting into the sutured tissue after the suture is cut off, so that the sutured tissue cannot be closely attached and the healing time of the sutured tissue is further increased is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0042] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate the non-limiting exemplary embodiments of the application and serve to explain the application, and do not constitute improper limitations on the application. In the drawings:

[0043] Figure 1 It is a whole schematic view of the locking ring locking unit in an embodiment of the application.

[0044] Figure 2 It is a whole schematic view of the locking ring locking unit in an embodiment of the application. Figure 1 The cross-sectional view along the A-A1 direction.

[0045] Figure 3 It is a whole schematic view of the locking ring locking unit in an embodiment of the application.

[0046] Figure 4 It is a whole schematic view of the locking ring locking unit in an embodiment of the application. Figure 3 The cross-sectional view along the B-B1 direction, only the main body, the locking ring and the suture are shown in the figure.

[0047] Figure 5 It is a whole schematic view of the locking ring locking unit in an embodiment of the application.Figure 1 A-A1 direction, and the locking ring is limited to be accommodated in the extrusion cavity.

[0048] Figure 6 For Figure 1 A-A1 direction, and the locking ring is limited to be accommodated in the extrusion cavity.

[0049] Figure 7 For the schematic diagram of the locking ring locking unit in an embodiment disclosed by the application.

[0050] Figure 8 For the schematic diagram of the support in an embodiment disclosed by the application.

[0051] Figure 9 For the schematic diagram of the extrusion part in an embodiment disclosed by the application.

[0052] Figure 10 For the schematic diagram of the locking ring locking unit in an embodiment disclosed by the application.

[0053] Figure 11 For the schematic diagram of the eccentric part in an embodiment disclosed by the application.

[0054] Among them, the above-mentioned drawings include the following reference signs:

[0055] Locking ring locking unit 100, main body 10, accommodating cavity 11, first hole 12, first sub-hole 121, second sub-hole 122, pipe body 13, outer pipe 131, end plate 132, fixing part 133, fixing hole 134, support 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, avoiding hole 18, extrusion part 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, avoiding groove 32, extrusion cavity 40, elastic part 50, first cutter 60, second cutter 70, limiting part 80, pulling part 90, locking ring 200, through hole 210, suture 300, operating handle 400, fixed arm 410, movable arm 420, connecting pipe 500, locking suture device 1000. DETAILED DESCRIPTION

[0056] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0057] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0058] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the actual proportions used in the fabrication, assembly, and operation of the example. Techniques, methods, and apparatus known to those of ordinary skill can not be discussed in detail because they can be readily understood from the disclosure given herein and the skilled artisan would understand that the techniques, methods, and apparatus are to be considered as part of the description of the application. In all examples shown and discussed herein, any specific value is to be interpreted as merely an example, and not a limitation. Other examples of the example embodiments can therefore have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0059] Referring to Figures 1-4 As shown, in one aspect, the present application provides a locking ring locking unit 100 for pressing a locking ring 200 so that a suture 300 passing through the locking ring 200 is clamped and fixed. The locking ring 200 has a first state and a second state. When the locking ring 200 is in the first state, the suture 300 can be movably arranged in the locking ring 200, and when the locking ring 200 is in the second state, the suture 300 is clamped in the locking ring 200.

[0060] Further, the locking ring 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 arranged in the main body 10, and the eccentric member 30 rotates along a rotation axis 17 in the main body 10 to drive the pressing member 20 to move, and cooperates with the main body 10 to press the locking ring 200, so that the suture 300 passing through the locking ring 200 is clamped and fixed by the locking ring 200.

[0061] Further, the main body 10 is configured to have a receiving cavity 11 and a first hole 12, the first hole 12 communicates with the receiving cavity 11 and is used for the locking ring 200 and the suture 300 arranged in the locking ring 200 to enter and exit the receiving cavity 11.

[0062] Further, after the suturing of the tissue is completed, the suture 300 needs to be fixed, and the excess part of the suture 300 after the fixation is cut off, so as to complete the whole in-vivo suturing process. Since the in-vivo suturing is not convenient for direct knotting, the suture 300 is fixed by being clamped by the suture loop 200 after the suture 300 is passed through the suture loop 200 and the suture loop 200 is extruded, which is a convenient and efficient suture 300 fixing mode.

[0063] Specifically, after the suturing of the tissue is completed, the suture loop 200 and the suture 300 passing through the suture loop 200 are put into the accommodating cavity 11 through the first hole 12, and after the suture loop 200 is extruded in place and the passing suture 300 is clamped and fixed, the excess suture 300 is cut off, and the extruded suture loop 200 and the clamped and fixed suture 300 are taken out of the accommodating cavity 11 from the first hole 12.

[0064] Further, please refer to Figure 2 、 5 -6, the extrusion piece 20 is arranged in the accommodating cavity 11, and the extrusion piece 20 and the main body 10 are configured to form an extrusion cavity 40, the extrusion cavity 40 is communicated with the first hole 12, and is used for accommodating the suture loop 200.

[0065] The eccentric piece 30 is also arranged in the accommodating cavity 11 and abuts against a side of the extrusion piece 20 away from the extrusion cavity 40. Wherein, under the driving of the eccentric piece 30, the extrusion piece 20 has a first position and a second position. When the extrusion piece 20 is in the first position, the extrusion piece 20 is close to the rotation center of the eccentric piece 30, at this time, the cavity volume of the extrusion cavity 40 is maximum, and the suture loop 200 not being extruded can directly enter and exit the extrusion cavity 40 from the first hole 12. When the extrusion piece 20 is in the second position, the extrusion piece 20 is away from the rotation center, at this time, the cavity volume of the extrusion cavity 40 is compressed, so that the suture loop 200 accommodated in the extrusion cavity 40 is extruded in place and the passing suture 300 is clamped and fixed.

[0066] In the driving of the eccentric member 30, the suture loop 200 accommodated in the extrusion cavity 40 does not move relative to the suture loop locking unit 100 in the process of the extrusion member 20 moving from the first position to the second position, so that the increase of the distance between the suture loop 200 and the sutured tissue position can be avoided, which leads to the increase of the implant, causing the increase of the healing time of the sutured tissue; and the problem of the suture loop 200 moving away from the sutured tissue in the process of gradually clamping the suture 300, which has the risk of pulling the sutured tissue, is avoided, and the problems of the implanted suture 300 being too long and the implanted suture 300 retracting into the sutured tissue after cutting the suture 300, which causes the sutured tissue to not closely adhere, further increasing the healing time of the sutured tissue, are effectively solved.

[0067] Further, please refer to Figure 4 、 7 -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 arranged in the tube body 13 and defines the accommodation cavity 11 with the tube body 13.

[0068] Further, the support member 14 includes a support plate portion 141 and two limiting plate portions 142, and the two limiting plate portions 142 are oppositely arranged on the support plate portion 141 along the axial direction of the tube body 13 and configured to form a first limiting groove 143 with the support plate portion 141.

[0069] The extrusion member 20 is arranged 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 arranging the extrusion member 20 in 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, so as to improve the movement accuracy of the extrusion member 20 and the extrusion efficiency of the suture loop 200.

[0070] Further, the eccentric member 30 is rotatably arranged on the 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 suture loop 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 suture loop 200 accommodated in the extrusion cavity 40 is extruded in place, and the passing suture 300 is clamped and fixed.

[0071] Further, referring to Figure 2 , 5 Fig. 6, the locking ring locking unit 100 further comprises an elastic member 50, which is configured to drive the pressing member 20 to move from the second position to a third position, so that the locking ring 200 after being pressed in place can be withdrawn from the pressing cavity 40 together with the locked suture 300.

[0072] Further, the elastic member 50 is arranged in the accommodating cavity 11 and configured to drive the pressing member 20 to move 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 locking ring 200 after being pressed in place can be withdrawn from the first hole 12 faster after the suture is cut, or facilitate the pressing of the next locking ring 200.

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

[0074] In the embodiments of the present application, the elastic member 50 can also have a certain elastic driving force to drive the pressing member 20 to move from the second position to the third position. Wherein, the third position is between the first position and the second position, and in the case that the pressing member 20 is in the third position, the locking ring 200 in the first state cannot enter the pressing cavity 40, and the locking ring 200 in the second state can exit the pressing cavity 40.

[0075] Further, referring to Figures 4-6 Fig. 7, the tube body 13 comprises an outer tube 131, an end plate 132 and a fixing member 133. The end plate 132 and the fixing member 133 are 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. Wherein, the end plate 132 is configured to form the first hole 12.

[0076] Further, the fixing member 133 is connected with the support member 14 and is configured to form the first limiting portion 15. Specifically, the fixing member 133 is connected with 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] In the axial direction of the outer tube 131, the first limiting part 15 is away from the extrusion cavity 40, and the second limiting part 21 is close to the extrusion cavity 40. The opposite ends of the elastic member 50 are respectively limited and abut between the first limiting part 15 and the second limiting part 21, so that the one end of the extrusion member 20 away from the fixed member 133 is abutted to the inner face of the end plate 132 under the driving of the elastic member 50, so that the extrusion member 20 is also limited between the elastic member 50 and the end plate 132 in the axial direction of the outer tube 131, and therefore, under the limiting action of the first limiting groove 143, the extrusion member 20 can only be driven by the eccentric member 30 to move from the first position to the second position, and under the driving of the elastic member 50, from the second position to the first position, or from the second position to the third position close to the first position.

[0078] Further, please refer to Figures 5-6 , 9, the extrusion member 20 includes a first section 22 and a second section 23. The first section 22 and the corresponding support member 14 and the end plate 132 define the extrusion cavity 40. Specifically, the first section 22 and the corresponding support plate part 141, two limiting plate parts 142 and the end plate 132 define the extrusion cavity 40. 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 part of the first hole 12.

[0079] The second section 23 is close to the fixed member 133, and the second section 23 is configured to form the second limiting part 21. Specifically, the second section 23 includes a first plate part 231 and two second plate parts 232, the first plate part 231 is arranged opposite to the support plate part 141, and is close to the support plate part 141 under the driving of the eccentric member 30, two second plate parts 232 are respectively connected on the opposite sides of the first plate part 231, and together with the end face of the first section 22, the second limiting part 21 is configured to form the second limiting part 21, which is a limiting groove structure. Wherein, one end of the elastic member 50 corresponding to the second limiting part 21 is limited and abutted in the limiting groove.

[0080] Further, each of the second plate parts 232 corresponds to a limiting plate part 142, and the side of each of the second plate parts 232 away from the other second plate part 232 is attached to the corresponding limiting plate part 142, thereby increasing the area of mutual limiting of the extrusion member 20 and the first limiting groove 143, so that the extrusion member 20 is more stably moved in the first limiting groove 143 towards the direction close to or away from the support plate part 141.

[0081] Further, the eccentric member 30 is rotatably supported on the side of the first section 22 away from the pressing cavity 40, so that the eccentric member 30 can drive the pressing member 20 to move towards the support plate portion 141 to press the locking ring 200, so as to effectively press the locking ring 200 into place.

[0082] Further, as shown in Figure 2 , 4 , 8, the main body 10 is further configured with a second hole 16. The second hole 16 is used for the suture 300 extending out of the locking ring 200 to pass through, so that after the fixation of the suture 300 by the locking ring 200 is completed, the excess suture 300 after cutting can be taken out from the second hole 16.

[0083] Further, the support plate portion 141 is configured with a second limiting groove 144. The second limiting groove 144 is located on the side of the pressing cavity 40 away from the end plate 132, and the second hole 16 communicates with the groove bottom of the second limiting groove 144. The suture 300 extending out of the locking ring 200 will pass through the second limiting groove 144 and the second hole 16 in turn and extend out of the outer tube 131.

[0084] In the embodiment of the present application, as shown in Figures 5-6 , the locking ring locking unit 100 further comprises a first cutter 60. The first cutter 60 is arranged in the second limiting groove 144. When the pressing member 20 is in the second position, the first cutter 60 moves in the second limiting groove 144 towards the pressing cavity 40 and passes through the second hole 16 to cut the suture 300 extending out of the second hole 16.

[0085] Specifically, before cutting is completed, the suture 300 extending out of the second hole 16 is still in a straightened state, and when the first cutter 60 passes through 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] Further, the elastic member 50 can be a spring, a metal spring piece, etc. made of medical grade material, and can be an elastic structure that drives the pressing member 20 to reset from the second position to the first position, or an elastic structure that moves from the second position to the third position close to the first position.

[0087] Preferably, in the embodiments of the present application, the elastic member 50 is a metal spring, so that the elastic member 50 can not only realize the reset movement of the extruding member 20 from the second position to the first position, or from the second position to the third position close to the first position, but also can resist the extruding member 20 towards the end plate 132 under the limiting action of the first limiting portion 15 and the second limiting portion 21, so that the pressing member cannot move along the axial direction of the outer tube 131.

[0088] Further, the end of the metal spring close to the first limiting portion 15 is pressed in the notch of the second limiting groove 144 at the same time, so as to limit the first cutter 60 from being separated from the second limiting groove 144, so that the metal spring can also limit the first cutter 60 at the same time, avoid the first cutter 60 from being separated from the second limiting groove 144, and avoid the first cutter 60 from sliding in the second limiting groove 144 at will, so that the suture 300 is cut off 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 be invalid.

[0089] Further, in the embodiments of the present application, after the extruding member 20 completes the extrusion of the locking ring 200, the first cutter 60 moves towards the extruding cavity 40 under the driving of external force, so as to cut the excess suture 300.

[0090] In the embodiments of the present application, please refer to Figures 5-6 The locking ring locking unit 100 also includes a second cutter 70. The second cutter 70 is arranged on the side of the extruding member 20 towards the support plate portion 141, and the second cutter 70 moves synchronously with the extruding member 20, and after the extruding member 20 extrudes the locking ring 200 in place, the cutting edge of the second cutter 70 is close to the excess suture 300 extending out of the locking ring 200 and passing through the second hole 16. Under the further driving of the eccentric member 30, the extruding member 20 drives the second cutter 70 to continue to move, until the second cutter 70 cuts the excess suture 300.

[0091] Further, the second cutter 70 extends out of the extruding member 20 to block the locking thread ring 200 located in the extruding cavity 40 from extending out of the extruding cavity 40. Specifically, the second cutter 70 is closer to the support plate portion 141 relative to the extruding member 20. Therefore, in the embodiment of the present application, the second cutter 70 can limit the side of the extruding cavity 40 away from the side of the end plate 132, so as to form a limiting cavity with the extruding cavity 40, thereby limiting the locking thread ring 200 located in the extruding cavity 40 from falling out of the extruding cavity 40, so that the locking thread ring 200 can be completely extruded in place when the extruding member 20 moves to the second position, so that the part of the suture 300 passing through the locking thread ring 200 is clamped and fixed, thereby increasing the clamping length of the suture 300 by the locking thread ring 200, and improving the stability of the suture 300.

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

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

[0094] Further, referring to Figure 2 As shown, the extruding cavity 40 can also be provided with a limiting member 80. The limiting member 80 is provided on the extruding member 20 and / or the support plate portion 141, and the limiting member 80 is used to guide the locking thread ring 200 entering the extruding cavity 40 to be placed in the axial direction of the outer tube 131. Thus, the residual excess suture 300 passing through the locking thread ring 200 is further reduced.

[0095] Further, the limiting member 80 is provided in the extruding cavity 40 in the axial direction of the outer tube 131 to limit the first central axis of the locking thread ring 200 entering the extruding cavity 40 to be parallel to the second central axis of the outer tube 131, thereby effectively improving the parallel placement of the locking thread ring 200 in the extruding cavity 40 in the direction of the second central axis.

[0096] In the embodiments of the present application, the limiting member 80 is a flexible member, which is elastically deformed during the movement of the pressing member 20 from the first position to the second position.

[0097] Further, the flexible member has a certain buffering effect.

[0098] In the embodiments of the present application, the limiting member 80 is an elastic member, which is elastically deformed during the movement of the pressing member 20 from the first position to the second position.

[0099] Further, the elastic member has a buffering effect, and cooperates 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 the present application, referring to Figure 2 The limiting member 80 is a limiting column, and the pressing member 20 or the support plate portion 141 is provided with a avoiding hole 18 corresponding to the limiting member 80. During the movement of the pressing member 20 from the first position to the second position, the limiting member 80 enters the corresponding avoiding hole 18.

[0101] Further, the limiting column and the avoiding hole 18 have a guiding effect, so that the pressing 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, referring to Figures 2-5 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 lock wire ring 200 in the first state or the second state to pass through, and the second sub-hole 122 can be used for the lock wire ring 200 in the second state to pass through.

[0103] The lock wire ring 200 in the first state has a hollow through hole 210, and the suture 300 passes through the lock wire ring 200 through the through hole 210. The through hole 210 of the lock wire ring 200 in the second state is closed because the lock wire ring 200 is pressed into place, so the lock wire ring 200 in the second state is in a flat structure.

[0104] Specifically, the first sub-hole 121 and the second sub-hole 122 are in communication with each other and communicate the extrusion cavity 40 with the outside respectively. The first sub-hole 121 has a first cross-sectional area greater than that of the second sub-hole 122, and the locking wire ring 200 in the first state cannot pass through the second sub-hole 122 to enter or exit the extrusion cavity 40, 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, 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 and the second sub-hole 122 are in communication so that the locking wire ring 200 in the first state can enter the extrusion cavity 40 from the first sub-hole 121 or from the communication 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, the risk of the locking wire ring 200 exiting the extrusion cavity 40 can be reduced while ensuring that the locking wire ring 200 smoothly enters the extrusion cavity 40 from the first sub-hole 121, thereby reducing the operation difficulty. After extrusion is completed, the locking wire ring 200 in the second state can be conveniently exited from the extrusion cavity 40 through the first sub-hole 121 or the second sub-hole 122, thereby improving the efficiency of the locking wire ring 200 in the second state exiting the extrusion cavity 40.

[0107] Further, 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 move the locking wire ring 200 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, referring to Figure 10 The locking wire ring locking unit 100 is provided in the locking wire ring locking device 1000. Therefore, the locking wire ring locking device 1000 has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0109] Further, the locking and cutting device 1000 further comprises an operating handle 400 and a connecting pipe 500. The connecting pipe 500 is connected between the operating handle 400 and the main body 10 of the locking ring locking unit 100, and is located at the end of the main body 10 away from the first hole 12, for connecting the operating handle 400 and the locking ring locking unit 100 together, so that when suturing the cutting thread in the body, the locking ring locking unit 100 and part of the connecting pipe 500 can be stretched out of the patient's body, and the operating handle 400 can be held to operate.

[0110] Further, please refer to Figures 5-6 , 10, the locking ring locking unit 100 further comprises a pulling member 90. The pulling member 90 passes through the connecting pipe 500 and is connected between the operating handle 400 and the eccentric member 30. The pulling member 90 drives 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 can be a trigger type operating handle 400, wherein the trigger type operating handle 400 comprises 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 pipe 500 is connected to the movable arm 420. By cocking 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 to reset from the second position to the first position, or from the second position to the third position close to the first position, under the drive of the elastic member 50.

[0112] Alternatively, the operating handle 400 can also be a rotary operating handle 400, wherein the rotary operating handle 400 can comprise an outer housing, a hand screw, a lead screw and a sliding block. The outer housing is fixedly connected to the connecting pipe 500 away from the locking ring locking unit 100, the sliding block and the lead screw are respectively arranged in the outer housing, and the sliding block is threadedly connected to the lead screw, and the hand screw is rotatably arranged on the outer housing and extends into the outer housing to be connected to the lead screw.

[0113] In the embodiment of the present application, the screw rod rotates in the shell and moves along the axial line of the rotation axis 17, and the slider moves along the axial line of the rotation axis 17. The pulling member 90 passing through the connecting pipe 500 is connected to the slider. The screw rod is driven to rotate by rotating the hand knob, so that the slider moves along the axial line of the screw rod, thereby driving the pulling member 90 to drive the eccentric member 30 to move, and further driving the pressing member 20 to move between the first position and the second position.

[0114] In the embodiment of the present application, the slider is fixed in the shell and remains stationary relative to the shell. The screw rod rotates under the rotation of the hand knob and moves along the axial line of the rotation axis 17. The pulling member 90 passing through the connecting pipe 500 is connected to the end of the screw rod away from the hand knob. The screw rod is driven to rotate by rotating the hand knob, so that the screw rod moves along the axial line of the rotation axis 17, thereby driving the pulling member 90 to drive the eccentric member 30 to move, and further driving the pressing member 20 to move between the first position and the second position.

[0115] Further, 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] Further, the eccentric member 30 is rotatably abutted on the side of the pressing member 20 away from the pressing cavity 40 through the rotation shaft 17, and the rotation shaft 17 is fixed in the inner tube 131.

[0117] Further, referring to Figure 11 As shown in the figure, the eccentric member 30 is provided with a limiting hole 31 and an avoiding groove 32. The limiting hole 31 is away from the rotation shaft 17 and communicates with the avoiding groove 32. The limiting hole 31 is used for limiting the limiting connection end of the pulling member 90 passing through the limiting hole 31 and being accommodated in the avoiding groove 32, and the opening of the avoiding groove 32 faces the pressing member 20.

[0118] Specifically, by setting the limiting hole 31 away from one end of the rotating shaft 17, more effort can be saved when pulling the eccentric piece 30 to move. And by setting the avoiding slot 32 on the eccentric piece 30 to accommodate the pulling piece 90, the pulling piece 90 can be avoided from being clamped between the eccentric piece 30 and the extruding piece 20, so that the pulling piece 90 can be stably pulled to make the eccentric piece 30 stably drive the extruding piece 20 to move from the first position to the second position, and extrude the lock wire ring 200 from the first state to the second state.

[0119] For the purposes of the description hereinafter, the terms "upper", "bottom", "lower", "over", and "under", are defined with respect to the orientations of the figures, as shown. The terms "over" and "under" are intended to encompass different orientations of the device or structure in addition to the orientation depicted in the figures. For example, if the device or structure in the figures is turned over, elements described as "over" other elements or "under" other elements would then be oriented "under" the other elements or "over" the other elements, respectively. Thus, the exemplary term "over" can encompass both an orientation of "over" and "under". The device or structure can be oriented in any manner when not deployed for use.

[0120] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any meaning of importance, but are used only to distinguish one element from another. Unless otherwise stated, the use of such words is not intended to imply a limitation on the protection scope of the present application.

[0121] The preferred embodiments of the present application have been described above with the specific details. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A locking wire ring locking unit characterized by comprising: The main body comprises a tube body and a support, the tube body comprises an outer tube, an end plate and a fixing piece, the end plate and the fixing piece are respectively arranged at opposite ends of the outer tube along an axial direction of the outer tube, the end plate is configured to form a first hole, the fixing piece is connected with the support and is configured to form a first limiting portion, the support is arranged in the tube body and delimits a containing cavity with the tube body, the first hole communicates with the containing cavity and is used for the locking wire ring and the suture arranged in the locking wire ring to enter or exit the containing cavity, the support comprises a support plate portion and two limiting plate portions, the two limiting plate portions are oppositely arranged on the support plate portion along the axial direction of the tube body and are configured to form a first limiting groove with the support plate portion, and the support plate portion is configured to form a second limiting groove; The extrusion piece is arranged in the first limiting groove and delimits an extrusion cavity with the support plate portion, the two limiting plate portions and the corresponding inner wall of the tube body, the extrusion cavity communicates with the first hole and is used for containing the locking wire ring, the extrusion piece is configured 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 elastic piece is arranged in the containing cavity and is used for driving the extrusion piece away from the support plate portion, opposite ends of the elastic piece are limited to abut between the first limiting portion and the second limiting portion, so that one end of the extrusion piece away from the fixing piece abuts against the end plate; The first cutter is arranged in the second limiting groove, and one end of the elastic piece close to the first limiting portion is simultaneously pressed in the notch of the second limiting groove to limit the first cutter from separating from the second limiting groove; The eccentric piece is arranged in the containing cavity and rotatably abuts against one side of the extrusion piece away from the support plate portion; Wherein, under the driving of the eccentric piece, the extrusion piece has a first position and a second position, when the extrusion piece is in the first position, the extrusion piece is away from the support plate portion, and when the extrusion piece is in the second position, the extrusion piece is close to the support plate portion and extrudes the locking wire ring contained in the extrusion cavity. Under the driving of the elastic piece, the extrusion piece also has a third position, when the extrusion piece is in the third position, the extrusion piece is away from the support plate portion; 2. The locking wire ring locking unit according to claim 1, characterized by Wherein, the third position is between the first position and the second position, or the third position is the same position as the first position. The extrusion piece comprises a first segment and a second segment, the first segment delimits the extrusion cavity with the corresponding support and the end plate, the second segment is close to the fixing piece, and the second segment is configured to form the second limiting portion; 3. The locking wire ring locking unit according to claim 1, characterized by Wherein, the eccentric piece rotatably abuts against one side of the first segment away from the extrusion cavity. The main body is also configured to form a second hole, and the second hole is used for the suture of the locking wire ring to pass through.

4. The locking wire ring locking unit according to claim 1, characterized by ​ The second limiting groove is located on the side of the extrusion cavity away from the end plate, and the second hole communicates with the groove bottom of the second limiting groove; When the extrusion piece is in the second position, the first cutter moves in the second limiting groove towards the extrusion cavity and passes through the second hole to cut the suture passing through the second hole.

5. The locking wire ring locking unit according to claim 1, characterized by The elastic piece is a metal elastic sheet.

6. The locking wire ring locking unit according to claim 1, characterized by The main body is further configured with a second hole for the suture of the suture ring to pass through; The second limiting groove is located on the side of the extrusion cavity away from the end plate, and the second hole communicates with the groove bottom of the second limiting groove; The suture ring locking unit further comprises a second cutter, which is arranged on the side of the extrusion piece facing the support plate part, and the second cutter protrudes from the extrusion piece to block the suture ring in the extrusion cavity from protruding out of the extrusion cavity; When the extrusion piece is in the first position, the second cutter is away from the second limiting groove, and when the extrusion piece is in the second position, the second cutter enters the second limiting groove and cuts the suture passing through the second hole.

7. The locking wire ring locking unit according to any one of claims 1 to 6, characterized in that, A limiting piece is arranged in the extrusion cavity, the limiting piece is arranged on the extrusion piece and / or the support plate part, and the limiting piece is used to guide the suture ring entering the extrusion cavity to be placed in the axial direction of the outer tube; The limiting piece is a flexible piece, and during the movement of the extrusion piece from the first position to the second position, the limiting piece elastically deforms correspondingly; Alternatively, the limiting piece is an elastic member, and during the movement of the extrusion piece from the first position to the second position, the limiting piece elastically deforms correspondingly; Alternatively, the limiting piece is a limiting column, and the extrusion piece or the support plate part is provided with a avoiding hole corresponding to the limiting piece, and during the movement of the extrusion piece from the first position to the second position, the limiting piece enters the corresponding avoiding hole.

8. The locking wire ring locking unit according to any one of claims 1 to 6, characterized by The suture ring has a first state and a second state, and when the suture ring is in the first state, the suture can be movably arranged in the suture ring, and when the suture ring is in the second state, the suture is clamped in the suture ring; The first hole comprises a first sub-hole and a second sub-hole, the first sub-hole can be used for passing the suture ring in the first state or the second state, or the first sub-hole and the second sub-hole are communicated to be used for passing the suture ring in the first state or the second state, and the second sub-hole can be used for passing the suture ring in the second state; Alternatively, the first hole comprises 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 communicated to constitute the first hole, the first sub-hole is used for passing the suture ring in the first state or the second state, or the first sub-hole and the second sub-hole are communicated to be used for passing the suture ring in the first state or the second state, and the second sub-hole is used for passing the suture ring in the second state.

9. A locking thread cutter, comprising: The locking and cutting device comprises the locking ring locking unit according to any one of claims 1-8; and An operating handle and a connecting pipe connected between the operating handle and the main body of the locking ring locking unit and located at an end of the main body away from the first hole; The locking ring locking unit further comprises a pulling member, the pulling member is connected between the operating handle and the eccentric member through the connecting pipe, and the pulling member pulls the eccentric member to rotate under the drive of the operating handle so as to drive the extrusion member to extrude the locking ring accommodated in the extrusion cavity.

10. The locking transection device of claim 9, wherein, The eccentric member is rotatably abutted on one side of the extrusion member away from the extrusion cavity through a rotating shaft; The eccentric member is provided with a limiting hole and a avoiding groove, the limiting hole is away from the rotating shaft and communicates with the avoiding groove, the limiting hole is used for passing through the pulling member and limiting the limiting connection end of the pulling member, at least part of the pulling member passing through the limiting hole is accommodated in the avoiding groove, and the opening of the avoiding groove faces the extrusion member.

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