Fixed ring wire locking unit and locking wire cutting device

Abstract

The invention discloses a fixing ring wire locking unit and a locking wire cutting device. According to the fixing ring thread locking unit, the containing cavity and the first hole which are communicated with each other are formed, the fixing ring provided with the sewing thread in a penetrating mode and the sewing thread are placed in the containing cavity together from the first hole, and therefore the fixing ring is contained and limited through the containing cavity, and meanwhile the sewing thread is locked through the fixing ring. At least part of the plugging piece is ingeniously extruded into the fixing ring, and then the suture penetrating through the fixing ring is fixed between the inner wall of the fixing ring and the plugging piece through close fit of the plugging piece and the fixing ring. The problems that the suture effect is poor due to the fact that the fixing ring cannot effectively clamp the suture due to direct extrusion of the fixing ring, and an operation fails due to the fact that the fixing ring falls off from the sutured tissue after the suture is cut off are solved, meanwhile, the fixing ring and the suture are prevented from moving together, the sutured tissue is prevented from being strained, and the suturing efficiency is improved. Redundant sutures return to suture the tissue, and the tissue healing time is prolonged.

Description

Technical Field

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

[0002] For surgeries involving suturing, after the tissues are sutured, the sutures need to be fixed and the excess sutures need to be cut off to complete the surgery.

[0003] The existing locking and cutting device usually clamps and presses a fixing ring on the surgical suture to make part of the inner wall of the fixing ring fit to clamp the surgical suture, and then cuts off the excess surgical suture on the proximal side of the fixing ring to complete the operation. However, in the process of clamping the surgical suture, the fixing ring may not be able to effectively clamp the suture, so that the suture cannot be completely locked by the fixing ring, causing the suture position to loosen and the suture effect to be poor. It may even cause the fixing ring to fall off from the suture tissue position after the suture is cut, resulting in serious consequences of surgical failure. Summary of the invention

[0004] The main purpose of the present application is to provide a fixed ring locking unit and a locking and cutting device to solve the problem in the prior art that the fixed ring cannot effectively clamp the suture after being squeezed and deformed.

[0005] In one aspect, the present application provides a fixed ring wire locking unit, the fixed ring wire 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 allowing a fixing ring and a suture thread passing through the fixing ring to enter and exit the receiving cavity; and

[0007] The blocking piece at least partially enters the fixing ring under the driving of external force, so as to squeeze and limit the suture passing through the fixing ring to the inner wall of the fixing ring.

[0008] Furthermore, the blocking member includes a blocking portion and a first push-pull portion that are interconnected, and the blocking member has an initial state and a blocking state. When the blocking member is in the initial state, the blocking portion is located outside the fixing ring, and when the blocking member is in the blocking state, the blocking portion at least partially enters the fixing ring to squeeze and limit the suture passing through the fixing ring to the inner wall of the fixing ring.

[0009] Furthermore, the blocking portion is interference-fitted with the inner wall of the fixing ring;

[0010] When the blocking member is in the initial state, the first push-pull portion is inserted into the fixing ring, and the blocking portion is located on the outer side of the fixing ring close to the first hole, and the first push-pull portion drives the blocking portion to at least partially enter the fixing ring under the driving force of an external force, so that the blocking member moves to the blocking state;

[0011] Alternatively, when the blocking member is in the initial state, the blocking member is located outside the fixing ring away from the first hole, and the first push-pull portion drives the blocking portion to move toward the first hole under the driving of an external force and at least partially enter the fixing ring, so that the blocking member moves to the blocking state;

[0012] And / or, the surface of the blocking portion is a non-slip surface;

[0013] And / or, the material of the sealing portion is any one of medical silicone, medical rubber, medical thermoplastic polyurethane elastomer, medical polytetrafluoroethylene, medical polycarbonate, medical polyurethane and medical polypropylene;

[0014] And / or, the first push-pull portion is any one of a rope and a metal wire with a slender and soft structure, or any one of a rigid rod-shaped or tubular structure.

[0015] Further, the fixing ring locking wire unit further comprises 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 fixing ring; and

[0016] A push-pull member, the push-pull member is disposed in the accommodating cavity and abuts against a side of the extruding member away from the extruding cavity;

[0017] Wherein, under the driving of the push-pull member, the extrusion member extrudes the fixing ring accommodated in the extrusion cavity.

[0018] Furthermore, the fixing ring locking wire unit further comprises a limiting member, which is arranged in the accommodating cavity and is spaced apart from a side of the extruding member away from the extruding cavity;

[0019] The push-pull member is held between the extrusion member and the limiting member, and the push-pull member comprises a wedge-shaped portion and a second push-pull portion connected to each other, and a wedge-shaped surface of the wedge-shaped portion faces the limiting member;

[0020] Wherein, the wedge-shaped portion drives the extrusion member to move from the first position to the second position under the drive of the second push-pull portion and the limit of the limit member. When the extrusion member is in the first position, the extrusion member is close to the limit member, and the unextruded fixing ring can enter and exit the extrusion cavity from the first hole. When the extrusion member is in the second position, the extrusion member is away from the limit member, and the extruded fixing ring is limited in the extrusion cavity.

[0021] And / or, the fixing ring locking wire unit further comprises an elastic member, the elastic member is arranged in the accommodating cavity, and 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 close to the limiting member;

[0022] The third position is between the first position and the second position, or the third position is the same position as the first position.

[0023] Further, the main body comprises a tube, and the tube is configured to form the first hole; and

[0024] 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;

[0025] 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 push-pull member is arranged on the side of the extrusion member away from the support plate portion;

[0026] 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.

[0027] Further, the tube body comprises an outer tube and an end plate, wherein the end plate is disposed at one end of the outer tube and is configured to form the first hole;

[0028] The push-pull member further comprises a limiting guide portion, which is connected to an end of the second push-pull portion away from the wedge-shaped portion, and the limiting guide portion is arranged in the outer tube and is adapted to the inner wall of the outer tube.

[0029] And / or, the extrusion member includes a first section and a second section, the first section and the corresponding groove wall of the first limiting groove and the end plate define the extrusion cavity, the second section is away from the end plate, and the first end of the elastic member abuts against the second section or is fixedly connected to the second section;

[0030] Wherein, the wedge-shaped portion abuts against a side of the first section away from the extrusion cavity;

[0031] And / or, the extrusion member further includes a limit stop portion, which is disposed at a junction between the first section and the second section and extends toward the support plate portion to limit the fixing ring from crossing the extrusion cavity.

[0032] Furthermore, the main body is also structured to form a second hole, and the second hole is used for the suture extending out of the fixing ring and the first push-pull portion of the blocking member to pass through;

[0033] 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;

[0034] The fixed ring locking wire unit also includes a cutter, which is arranged in the second limiting groove. When the extrusion member is in the second position, the cutter moves in the second limiting groove toward the extrusion cavity and crosses the second hole to cut off the suture passing through the second hole and the first push-pull part.

[0035] Further, the elastic member is a metal spring sheet, and the second end of the metal spring sheet is simultaneously pressed on the notch of the second limiting groove or fixedly connected to the notch of the second limiting groove to limit the cutter from leaving the second limiting groove;

[0036] And / or, the limiting guide portion has a limiting hole connected to the second limiting groove, and one end of the cutter away from the second hole is limited in the limiting hole.

[0037] Further, the first hole includes a first sub-hole and a second sub-hole, the first sub-hole can be used to allow an unextruded fixing ring to pass through, or the first sub-hole is connected to the second sub-hole and can be used to allow an unextruded fixing ring to pass through, and the second sub-hole can be used to allow an extruded fixing ring to pass through;

[0038] Alternatively, the first hole includes a first sub-hole and a second sub-hole, the first sub-hole can be used for the passage of an unextruded fixing ring, or the first sub-hole is connected to the second sub-hole and can be used for the passage of an unextruded fixing ring, and the second sub-hole can be used for the passage of an extruded fixing ring; wherein 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.

[0039] On the other hand, the present application further provides a locking and cutting device, the locking and cutting device comprising any one of the above-mentioned fixing ring locking unit; and

[0040] An operating handle and a connecting pipe, wherein the connecting pipe is connected between the operating handle and the main body of the fixing ring locking wire unit and is located at an end of the main body away from the first hole.

[0041] In the fixing ring lock thread unit of the present application, by providing the mutually connected accommodating cavity and the first hole, and by placing the fixing ring with sutures and the sutures through the first hole together in the accommodating cavity, the fixing ring is contained and limited by the accommodating cavity, and the blocking member is cleverly squeezed at least partially into the fixing ring, and then the sutures passing through the fixing ring are fixed between the inner wall of the fixing ring and the blocking member by the close cooperation between the blocking member and the fixing ring, thereby avoiding the problems that the fixing ring cannot effectively clamp the sutures due to direct squeezing of the fixing ring, resulting in poor suturing effect, and the fixing ring falls off from the suture tissue position after the sutures are cut, resulting in surgical failure. At the same time, it can also avoid the fixing ring and the sutures clamped by it moving in a direction away from the suture tissue due to squeezing, thereby avoiding the sutures pulling the suture tissue, and avoiding the problem that the excess sutures return to the sutured tissue, resulting in the suture tissue not being able to fit tightly, and increasing the tissue healing time. 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 fixed ring locking wire unit in an embodiment disclosed in the present application.

[0044] Figure 2 This is an overall schematic diagram from another perspective of the fixed ring locking wire unit in one embodiment disclosed in the present application.

[0045] Figure 3 for Figure 2 Cross-sectional view along direction A-A1.

[0046] Figure 4 This is a cross-sectional schematic diagram of the sealing member and the fixing ring cooperating to squeeze and fix the suture.

[0047] Figure 5 for Figure 2A cross-sectional view along the A-A1 direction shows that the extrusion member is in the first position, the fixing ring is limitedly accommodated in the extrusion cavity, the first push-pull portion and the suture pass through the fixing ring respectively, and the sealing portion is located outside the fixing ring.

[0048] Figure 6 This is a schematic diagram of the structure of a push-pull member in an embodiment disclosed in the present application.

[0049] Figure 7 for Figure 2 A cross-sectional view along the A-A1 direction, showing the extrusion member in the second position.

[0050] Figure 8 for Figure 2 A cross-sectional view along the A-A1 direction, showing the extrusion member in the third position.

[0051] Fig. 9 It is a schematic structural diagram of a support member in an embodiment disclosed in the present application.

[0052] Fig.10 It is a schematic diagram of the structure of an extrusion part in an embodiment disclosed in the present application.

[0053] The above drawings include the following reference numerals:

[0054] Fixed ring locking line unit 100, accommodating cavity 11, first hole 12, first sub-hole 121, second sub-hole 122, tube body 13, outer tube 131, end plate 132, support member 14, support plate portion 141, limiting plate portion 142, first limiting groove 143, second limiting groove 144, second hole 16, extrusion member 20, first section 22, second section 23, first plate portion 231, second plate portion 232, limiting groove 233, limiting stop portion 24, blocking member 30, blocking portion 31, first push-pull portion 32, extrusion cavity 40, elastic member 50, first end 51, second end 52, push-pull member 60, wedge-shaped portion 61, second push-pull portion 62, limiting guide portion 63, limiting hole 64, cutter 70, limiting member 80, fixed ring 200, through hole 210, suture 300. DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] 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.

[0058] See also Figure 1-5 As shown, on one hand, the present application provides a fixing ring locking wire unit 100 for fixing a suture 300 passing through a fixing ring 200 on the inner wall of the fixing ring 200 .

[0059] Furthermore, the fixing ring lock thread unit 100 includes a main body and a blocking member 30. The main body structure is formed with a receiving cavity 11 and a first hole 12, the first hole 12 is connected to the receiving cavity 11, and is used for the fixing ring 200 and the suture 300 passing through the fixing ring 200 to enter and exit the receiving cavity 11. The blocking member 30 at least partially enters the fixing ring 200 under the drive of external force, so as to squeeze and limit the suture 300 passing through the fixing ring 200 on the inner wall of the fixing ring 200, thereby achieving the fixation of the suture 300 passing through the fixing ring 200, and thereby avoiding the problem that the fixing ring 200 cannot effectively clamp the suture 300 when the fixing ring 200 is directly squeezed to clamp the suture 300, resulting in the loosening of the suture 300 and poor suturing effect, and even after the excess suture 300 is cut off, the suture 300 in the fixing ring 200 is separated from the fixing ring 200 and separated from the suture tissue, resulting in the failure of the operation.

[0060] Furthermore, after the suturing of the tissue is completed, the suture 300 needs to be fixed, and the redundant part of the suture 300 and the occluding member 30 after the fixation is cut off, so as to complete the whole in vivo suturing process. Since in vivo suturing is not convenient for direct knotting, compared with the prior art of directly squeezing the fixing ring 200 so that the suture 300 passing through the fixing ring 200 is clamped and fixed, the present application passes the suture 300 through the fixing ring 200, and squeezes and clamps the passing suture 300 under the close cooperation between the occluding member 30 and the fixing ring 200, thereby simplifying the structure of the fixing ring locking wire unit 100, so that the fixing ring locking wire unit 100 is more compact and easy to operate.

[0061] For further information, see Figure 5 As shown, the blocking member 30 includes a blocking portion 31 and a first push-pull portion 32 that are connected to each other. The first push-pull portion 32 is used to drive the blocking portion 31 to enter the fixing ring 200. The blocking member 30 has an initial state and a blocking state. When the blocking member 30 is in the initial state, the blocking portion 31 is located outside the fixing ring 200. When the blocking member 30 is in the blocking state, the blocking portion 31 at least partially enters the fixing ring 200 to squeeze the suture 300 passing through the fixing ring 200 to the inner wall of the fixing ring 200.

[0062] In an embodiment of the present application, when the blocking member 30 is in the initial state, the first push-pull portion 32 and the suture 300 are passed through the fixing ring 200, and the blocking portion 31 is located on the outside of the fixing ring 200 close to the first hole 12. At this time, the suture 300 passing through the fixing ring 200 and the first push-pull portion 32 can both move relative to the fixing ring 200. Driven by an external force, the first push-pull portion 32 drives the blocking portion 31 to at least partially enter the fixing ring 200, so that the blocking member 30 moves to the blocking state. At this time, the blocking portion 31 entering the fixing ring 200 will fit tightly with the corresponding inner wall of the fixing ring 200, and squeeze the corresponding suture 300 to be limited in the fixing ring 200.

[0063] Furthermore, the first push-pull portion 32 may be a soft and slender structure such as a rope or a metal wire, or may be a rigid rod or tubular structure, so as to facilitate pulling the blocking portion 31 into the fixing ring 200 under the action of an external force.

[0064] In the embodiment of the present application, when the blocking member 30 is in the initial state, the blocking member 30 is located outside the fixing ring 200 away from the first hole 12. The first push-pull portion 32 drives the blocking portion 31 to move toward the first hole 12 under the drive of an external force and at least partially enter the fixing ring 200, so that the blocking member 30 moves to the blocking state. That is, the first push-pull portion 32 is a rigid rod-shaped or tubular structure, which is used to push the blocking portion 31 toward the first hole 12 and enter the fixing ring 200 under the action of an external force.

[0065] Furthermore, the sealing portion 31 is interference fit with the inner wall of the fixing ring 200, so that the sealing portion 31 can slightly expand the fixing ring 200 during the process of entering the fixing ring 200, thereby enabling the fixing ring 200 to cooperate with the sealing portion 31 to clamp the suture 300 passing through the fixing ring 200; or the sealing portion 31 can be deformed accordingly under the limiting action of the fixing ring 200, so as to fit tightly with the inner wall of the fixing ring 200 and clamp the suture 300 passing through the fixing ring 200.

[0066] Furthermore, the sealing portion 31 can be medical silicone, medical rubber or medical thermoplastic polyurethane elastomer (TPU) with good biocompatibility, flexibility and durability, or medical polytetrafluoroethylene (PTFE) with good biocompatibility, chemical corrosion resistance and non-stickiness, or medical polycarbonate (PC) with good toughness, strength and high cost performance, or medical polyurethane (PU) with high shear strength, elasticity, durability, fatigue resistance and high biocompatibility, or medical polypropylene (PP) with good biocompatibility, chemical stability and easy processing, so that the sealing portion 31 will cooperate with the fixing ring 200 to squeeze and limit the suture 300 passing through the fixing ring 200 without causing wear to the suture 300 and causing the suture to break.

[0067] Furthermore, the surface of the sealing portion 31 is an anti-slip surface, so that when the sealing portion 31 is tightly fitted with the inner wall of the fixing ring 200, it can have a good anti-slip effect, which can not only prevent the sealing portion 31 from sliding relative to the inner wall of the fixing ring 200, but also prevent the clamped suture 300 from sliding relative to the fixing ring 200 and the sealing portion 31.

[0068] For further information, see Figure 2 , 5As shown in Figures 6 and 7, the fixing ring lock wire unit 100 further includes an extrusion member 20 and a push-pull member 60. The extrusion member 20 is disposed in the accommodating cavity 11, and the extrusion member 20 and the main body structure form an extrusion cavity 40, the extrusion cavity 40 is connected to the first hole 12, and is used to accommodate the fixing ring 200. The push-pull member 60 is disposed in the accommodating cavity 11, and abuts against a side of the extrusion member 20 away from the extrusion cavity 40.

[0069] Under the drive of the push-pull member 60, the extrusion member 20 squeezes the fixing ring 200 accommodated in the extrusion cavity 40. At this time, the cavity volume of the extrusion cavity 40 is compressed, so that the fixing ring 200 accommodated in the extrusion cavity 40 is squeezed, so that on the basis of the blocking member 30 cooperating with the fixing ring 200 to squeeze and limit the suture 300, the passing suture 300 is further clamped and fixed by squeezing the fixing ring 200 in cooperation with the blocking part 31, and the volume of the fixing ring 200 is effectively compressed, thereby reducing the volume of the implant, so as to improve the efficiency of wound healing.

[0070] For further information, see Figure 2 , 5 As shown in , 6, the fixed ring locking unit 100 further includes a limiter 80. The limiter 80 is disposed in the accommodating cavity 11 and is spaced from the side of the extrusion member 20 away from the extrusion cavity 40. The push-pull member 60 is held between the extrusion member 20 and the limiter 80. Under the limiting action of the limiter 80, the push-pull member 60 drives the extrusion member 20 to extrude the fixed ring 200 located in the extrusion cavity 40.

[0071] The push-pull member 60 includes a wedge-shaped portion 61 and a second push-pull portion 62 that are connected to each other, and the wedge surface of the wedge-shaped portion 61 faces the limiting member 80; the second push-pull portion 62 drives the wedge-shaped portion 61 to move under the action of external force, so that the wedge-shaped portion 61 drives the extrusion member 20 to compress the extrusion cavity 40 under the limitation of the limiting member 80, thereby allowing the extrusion member 20 to extrude the fixing ring 200 located in the extrusion cavity 40.

[0072] By configuring the push-pull member 60 to have the wedge-shaped portion 61 structure matched with the limiting member 80 , the push-pull member 60 has a simple structure, is easy to process and prepare, and has a reduced manufacturing difficulty.

[0073] For further information, see Figure 5 , 7As shown, the extrusion member 20 has a first position and a second position. The wedge-shaped portion 61 drives the extrusion member 20 to move from the first position to the second position under the drive of the second push-pull portion 62 and the limit of the limit member 80. When the extrusion member 20 is in the first position, the extrusion member 20 is close to the limit member 80. At this time, the cavity volume of the extrusion cavity 40 is the largest, and the unextruded fixing ring 200 can 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 limit member 80. At this time, the cavity volume of the extrusion cavity 40 is reduced, and the extruded fixing ring 200 is limited in the extrusion cavity 40 and cannot exit the extrusion cavity 40 from the first hole 12.

[0074] Compared with the prior art, in the process of clamping and squeezing the fixing ring 200, the fixing ring 200 and the suture 300 inserted therein will be driven to move in a direction away from the first hole 12. In the present application, in the process of the extrusion member 20 moving from the first position to the second position, the fixing ring 200 accommodated in the extrusion cavity 40 will not move relative to the fixing ring locking unit 100. Therefore, it can avoid the increase in the distance between the fixing ring 200 and the tissue suturing position, which leads to an increase in implants and an increase in the healing time of the sutured tissue; and avoid the problem that the fixing ring 200 moves away from the sutured tissue in the process of gradually clamping the suture 300, which has the risk of pulling 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.

[0075] Furthermore, under the limiting action of the limiting member 80, the wedge-shaped portion 61 directly drives the extrusion member 20 from the first position to the second position by applying a pushing force or a pulling force to the second push-pull portion 62, thereby having the advantage of easy operation; and having the characteristic of changing the direction of the force applied to the extrusion member 20, so that the push-pull member 60 can drive the extrusion member 20 from the first position to the second position through a smaller stroke, thereby helping to shorten the overall length of the fixed ring locking wire unit 100, and thereby effectively compressing the overall volume of the fixed ring locking wire unit 100, thereby helping to push the fixed ring locking wire unit 100 into and out of the patient's body, and reducing the squeezing of the fixed ring locking wire unit 100 on the patient's tissue / organ during surgery, thereby improving the operating efficiency of medical staff and helping to shorten the operation time.

[0076] In addition, the wedge-shaped portion 61 can also enhance the force applied to the extrusion member 20 by means of the limiting cooperation of the limiting member 80 , so as to reduce the driving force for driving the push-pull member 60 to move.

[0077] For further information, see Figure 8 As shown, an elastic member 50 is further included, 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 fixing ring 200 squeezed into place can exit the extrusion cavity 40 together with the locked suture 300. When the extrusion member 20 is in the third position, the extrusion member 20 is close to the stop member 80.

[0078] 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 fixing ring 200 squeezed into place can be quickly withdrawn from the first hole 12 after the suture 300 is cut off, or to facilitate the extrusion of the next fixing ring 200.

[0079] In the implementation of this application, please refer to Figure 5 As shown, 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 fixing ring locking wire unit 100 can be reused.

[0080] In the implementation of this application, please refer to Figure 8 As shown, 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 unextruded fixing ring 200 cannot enter the extrusion cavity 40 from the first hole 12, and the extruded fixing ring 200 can exit the extrusion cavity 40.

[0081] 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.

[0082] Furthermore, the wedge-shaped portion 61 is arranged to cooperate with the limiting member 80 without a self-locking state, so that under the drive of the elastic member 50, the extrusion member 20 can quickly move from the second position to the third position.

[0083] For further information, see Figure 1 as well as Figure 7-9 As shown, the main body 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.

[0084] 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 .

[0085] 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 fixing ring 200.

[0086] Further, the push-pull member 60 is 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 fixing 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 fixing ring 200 accommodated in the extrusion cavity 40 is squeezed, and cooperates with the blocking portion 31 to further clamp and fix the passed suture 300.

[0087] For further information, see Figure 5 , 7 As shown in Figures 8 and 9, the elastic member 50 has a first end 51 and a second end 52 opposite to each other. The first end 51 is fixedly connected to the extrusion member 20, and the second end 52 is abutted against the support member 14; or, the first end 51 is abutted against the extrusion member 20, and the second end 52 is fixed to the support member 14.

[0088] Furthermore, the tube body 13 includes an outer tube 131 and an end plate 132. The end plate 132 is disposed at one end of the outer tube 131 away from the elastic member 50 and is configured to form the first hole 12.

[0089] The push-pull member 60 also includes a limiting guide portion 63, which is connected to one end of the second push-pull portion 62 away from the wedge-shaped portion 61. The limiting guide portion 63 is arranged in the outer tube 131 and is adapted to the inner wall of the outer tube 131. In the process that the second push-pull portion 62 drives the wedge-shaped portion 61 to drive the extrusion member 20 to move from the first position to the second position, the limiting guide portion 63 is used to limit the wedge-shaped portion 61 and the second push-pull portion 62, so that the push-pull member 60 can stably drive the extrusion member 20 to move from the first position to the second position.

[0090] For further information, see Figure 7 , 8 As shown in Figures 10 and 11, the extrusion member 20 includes a first section 22 and a second section 23. The first section 22 and the corresponding groove wall of the first limiting groove 143 and the end plate 132 define the extrusion cavity 40. Specifically, the first section 22 and the corresponding support plate portion 141, the two limiting plate portions 142 and the end plate 132 define the extrusion cavity 40. 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.

[0091] The second section 23 is far from the end plate 132, and the second section 23 includes a first plate portion 231 and two second plate portions 232, the first plate portion 231 is arranged opposite to the support plate portion 141, and approaches the support plate portion 141 under the driving of the push-pull member 60, 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 a limiting groove 233. The first end 51 of the elastic member 50 is abutted in the limiting groove 233, or is fixedly connected to the second section 23 in the limiting groove 233.

[0092] 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.

[0093] Furthermore, the wedge-shaped portion 61 abuts against the side of the first section 22 away from the extrusion cavity 40, thereby ensuring the extrusion force on the fixing ring 200 when the push-pull member 60 drives the extrusion member 20 to move toward the direction close to the support plate portion 141, so as to effectively squeeze the fixing ring 200 into place.

[0094] For further information, see Figure 7 , 8 As shown in Figure 10, the extrusion member 20 also includes a limit stop portion 24, which is arranged at the junction of the first section 22 and the second section 23, and extends toward the support plate portion 141 to limit the fixing ring 200 from crossing the extrusion cavity 40, so that with the cooperation of the limit stop portion 24, the extrusion cavity 40 can also effectively limit the fixing ring 200 from withdrawing in the direction away from the first hole 12.

[0095] For further information, see Figure 3 , 5 As shown, the main body is also structured to form a second hole 16. The second hole 16 is used for the suture 300 extending out of the fixing ring 200 and the first push-pull portion 32 to pass through. After the suture 300 is fixed by the fixing ring 200 and the blocking portion 31, the excess suture 300 and the first push-pull portion 32 after cutting are taken out from the second hole 16.

[0096] For further information, see Fig. 9 As shown, the support plate portion 141 is structured to form a second limiting groove 144. The second limiting groove 144 is located on the side of the extrusion chamber 40 away from the end plate 132, and the second hole 16 is connected to the bottom of the second limiting groove 144. The suture 300 passing through the fixing ring 200 and the first push-pull portion 32 will sequentially pass through the second limiting groove 144 and the second hole 16 to extend out of the outer tube 131.

[0097] In the implementation of this application, please refer to Figure 5 , 7 As shown in FIG. 8 , the fixing ring lock wire unit 100 further includes a cutter 70. The cutter 70 is disposed in the second limiting groove 144. When the extrusion member 20 is in the second position, the cutter 70 moves in the second limiting groove 144 toward the extrusion cavity 40 and crosses the second hole 16 to cut the suture 300 passing through the second hole 16 and the first push-pull portion 32.

[0098] Specifically, before the cutting is completed, the suture 300 extending out of the second hole 16 and the first push-pull portion 32 are both in a stretched state. When the cutter 70 passes over the second hole 16, the cutting edge of the cutter 70 will directly cut off the suture 300, thereby completing the cutting of the excess suture 300 and the first push-pull portion 32.

[0099] Furthermore, in an embodiment of the present application, the elastic member 50 is a metal spring sheet, and the second end 52 of the metal spring sheet is simultaneously pressed on the notch of the second limiting groove 144 or fixedly connected to the notch of the second limiting groove 144 to limit the cutter 70 from disengaging from the second limiting groove 144 and to prevent the cutter 70 from sliding freely in the second limiting groove 144, resulting in the suture 300 being cut by the cutter 70 before being clamped and fixed by the fixing ring 200, causing the clamping and fixing of the suture 300 to fail.

[0100] For further information, see Figure 1-3 As shown, the limiting guide portion 63 has a limiting hole 64 connected to the second limiting groove 144, and the end of the cutter 70 away from the second hole 16 is limited in the limiting hole 64, thereby further limiting the cutter 70 so that the cutter 70 can be more stably accommodated in the second limiting groove 144.

[0101] Furthermore, after the extrusion member 20 completes the extrusion of the fixing ring 200 , the cutter 70 is driven by an external force to move independently toward the extrusion cavity 40 to shear off the redundant suture 300 .

[0102] Further, 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 unextended or extruded fixing ring 200 to pass through, and the second sub-hole 122 can be used to allow the extruded fixing ring 200 to pass through.

[0103] 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 unextruded fixing ring 200 cannot enter or exit the extrusion cavity 40 through the second sub-hole 122, while the extruded fixing ring 200 can exit the extrusion cavity 40 from the first sub-hole 121 or the second sub-hole 122.

[0104] Further, the second sub-hole 122 is a rectangular hole or a trapezoidal hole, and the unextruded fixing ring 200 cannot enter or exit the extrusion cavity 40 from the second sub-hole 122, and the extruded fixing ring 200 can directly exit the extrusion cavity 40 from the second sub-hole 122. 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 unextruded fixing ring 200 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.

[0105] Therefore, by providing the first hole 12 with a special-shaped structure, it is possible to ensure that the fixing ring 200 smoothly enters the extrusion cavity 40 from the first sub-hole 121, while reducing the risk of the fixing ring 200 exiting from the extrusion cavity 40, thereby reducing the difficulty of operation. After the extrusion is completed, it is possible to facilitate the extruded fixing ring 200 to exit the extrusion cavity 40 from the first sub-hole 121 or the second sub-hole 122, thereby improving the efficiency of the extruded fixing ring 200 exiting the extrusion cavity 40.

[0106] Furthermore, the first sub-hole 121 is located on one side of the second sub-hole 122, so that after the un-extruded fixing ring 200 enters the extrusion cavity 40 from the first sub-hole 121, the fixing ring locking unit 100 can be deflected so that the fixing ring 200 moves to the area of ​​the extrusion cavity 40 corresponding to the second sub-hole 122, thereby reducing the risk of the fixing ring 200 exiting the extrusion cavity 40.

[0107] On the other hand, see Figure 1-10 As shown, the present application also provides a locking and cutting device. The locking and cutting device includes the above-mentioned fixed ring locking unit 100. Therefore, the locking and cutting device has the beneficial effects of any of the above-mentioned embodiments, which will not be repeated here.

[0108] Furthermore, the locking thread cutting device also includes an operating handle and a connecting tube. The connecting tube is connected between the operating handle and the main body of the fixing ring locking thread unit 100 and is located at an end of the main body away from the first hole 12, and is used to connect the operating handle with the fixing ring locking thread unit 100, so that when suturing and cutting the thread in the body, the fixing ring locking thread unit 100 and part of the connecting tube can be extended into the patient's body and operated by holding the operating handle.

[0109] Furthermore, the fixing ring locking wire unit 100 further includes a pulling member. The pulling member passes through the connecting tube and is connected between the operating handle and the limiting guide portion 63. The pulling member pulls the push-pull member 60 under the drive of the operating handle to drive the extruding member 20 to move from the first position to the second position.

[0110] Specifically, the operating handle may be a trigger-type operating handle, wherein the trigger-type operating handle includes a fixed arm and a movable arm, the movable arm is rotatably hinged on the fixed arm, and the pulling member passing through the connecting tube is connected to the movable arm. By pulling the movable arm close to the fixed arm, the push-pull member 60 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, 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.

[0111] Alternatively, the operating handle may also be a rotary operating handle, wherein the rotary operating handle may include an outer shell, a hand screw, a screw and a slider. The outer shell and the connecting pipe are fixedly connected away from the fixing ring lock wire 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.

[0112] In the embodiment of the present application, the screw rotates in the housing and does not move axially along the rotation axis where it is located, and the slider moves along the rotation axis. The pulling member passing through the connecting tube 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 to drive the push-pull member 60 to move synchronously, thereby causing the extrusion member 20 to move between the first position and the second position.

[0113] In the embodiment of the present application, the slider is fixed in the outer shell and remains stationary relative to the outer shell, and the screw is rotated under the rotation of the hand screw and moves along its rotation axis. The pulling member passing through the connecting tube is connected to the end of the screw away from the hand screw, and the screw is driven to rotate by rotating the hand screw, so that the screw moves axially along the rotation axis, thereby driving the pulling member to drive the push-pull member 60 to move, and then the extrusion member 20 moves between the first position and the second position.

[0114] 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.

[0115] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between 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.

[0116] 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 fixed ring locking wire 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 allowing a fixing ring and a suture thread passing through the fixing ring to enter and exit the receiving cavity; and The blocking piece at least partially enters the fixing ring under the driving of external force, so as to squeeze and limit the suture passing through the fixing ring to the inner wall of the fixing ring.

2. The fixing ring wire locking unit according to claim 1, characterized in that: The blocking member includes a blocking portion and a first push-pull portion that are interconnected. The blocking member has an initial state and a blocking state. When the blocking member is in the initial state, the blocking portion is located outside the fixing ring. When the blocking member is in the blocking state, the blocking portion at least partially enters the fixing ring to squeeze and limit the suture passing through the fixing ring to the inner wall of the fixing ring.

3. The fixing ring wire locking unit according to claim 2, characterized in that: The blocking portion is interference fit with the inner wall of the fixing ring; When the blocking member is in the initial state, the first push-pull portion is inserted into the fixing ring, and the blocking portion is located on the outer side of the fixing ring close to the first hole, and the first push-pull portion drives the blocking portion to at least partially enter the fixing ring under the driving force of an external force, so that the blocking member moves to the blocking state; Alternatively, when the blocking member is in the initial state, the blocking member is located outside the fixing ring away from the first hole, and the first push-pull portion drives the blocking portion to move toward the first hole under the driving of an external force and at least partially enter the fixing ring, so that the blocking member moves to the blocking state; And / or, the surface of the blocking portion is a non-slip surface; And / or, the material of the sealing portion is any one of medical silicone, medical rubber, medical thermoplastic polyurethane elastomer, medical polytetrafluoroethylene, medical polycarbonate, medical polyurethane and medical polypropylene; And / or, the first push-pull portion is any one of a rope and a metal wire with a slender and soft structure, or any one of a rigid rod-shaped or tubular structure.

4. The fixing ring wire locking unit according to claim 1, characterized in that: The fixing ring locking wire unit further includes an extrusion piece, the extrusion piece is disposed 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 fixing ring; and A push-pull member, the push-pull member is disposed in the accommodating cavity and abuts against a side of the extruding member away from the extruding cavity; Wherein, under the driving of the push-pull member, the extrusion member extrudes the fixing ring accommodated in the extrusion cavity.

5. The fixing ring wire locking unit according to claim 4, characterized in that: The fixed ring locking wire unit further comprises a limiting member, which is arranged in the accommodating cavity and is spaced apart from a side of the extruding member away from the extruding cavity; The push-pull member is held between the extrusion member and the limiting member, and the push-pull member comprises a wedge-shaped portion and a second push-pull portion connected to each other, and a wedge-shaped surface of the wedge-shaped portion faces the limiting member; Wherein, the wedge-shaped portion drives the extrusion member to move from the first position to the second position under the drive of the second push-pull portion and the limit of the limit member. When the extrusion member is in the first position, the extrusion member is close to the limit member, and the unextruded fixing ring can enter and exit the extrusion cavity from the first hole. When the extrusion member is in the second position, the extrusion member is away from the limit member, and the extruded fixing ring is limited in the extrusion cavity. And / or, the fixing ring locking wire unit further comprises an elastic member, the elastic member is arranged in the accommodating cavity, and 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 close to the limiting member; The third position is between the first position and the second position, or the third position is the same position as the first position.

6. The fixing ring wire locking unit according to claim 5, 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 push-pull member is arranged on the side of the extrusion member away from the support plate portion; 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.

7. The fixing ring wire locking unit according to claim 6, characterized in that: The tube body comprises an outer tube and an end plate, wherein the end plate is disposed at one end of the outer tube and is configured to form the first hole; The push-pull member further comprises a position limiting guide portion, the position limiting guide portion is connected to an end of the second push-pull portion away from the wedge-shaped portion, the position limiting guide portion is arranged in the outer tube and is adapted to the inner wall of the outer tube; And / or, the extrusion member includes a first section and a second section, the first section and the corresponding groove wall of the first limiting groove and the end plate define the extrusion cavity, the second section is away from the end plate, and the first end of the elastic member abuts against the second section or is fixedly connected to the second section; Wherein, the wedge-shaped portion abuts against a side of the first section away from the extrusion cavity; And / or, the extrusion member further includes a limit stop portion, which is disposed at a junction between the first section and the second section and extends toward the support plate portion to limit the fixing ring from crossing the extrusion cavity.

8. The fixing ring wire locking unit according to claim 7, characterized in that: The main body is also structured to form a second hole, the second hole is used for the suture extending out of the fixing ring and the first push-pull portion of the blocking member to pass through; 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 fixed ring locking wire unit also includes a cutter, which is arranged in the second limiting groove. When the extrusion member is in the second position, the cutter moves in the second limiting groove toward the extrusion cavity and crosses the second hole to cut off the suture passing through the second hole and the first push-pull part.

9. The fixing ring wire locking unit according to claim 8, characterized in that: The elastic member is a metal spring sheet, and the second end of the metal spring sheet is simultaneously pressed against the notch of the second limiting groove or fixedly connected to the notch of the second limiting groove to limit the cutter from leaving the second limiting groove; And / or, the limiting guide portion has a limiting hole connected to the second limiting groove, and one end of the cutter away from the second hole is limited in the limiting hole.

10. The fixing ring wire locking unit according to any one of claims 1 to 9, characterized in that: The first hole includes a first sub-hole and a second sub-hole, the first sub-hole can be used to allow an unextruded fixing ring to pass through, or the first sub-hole is connected to the second sub-hole and can be used to allow an unextruded fixing ring to pass through, and the second sub-hole can be used to allow an extruded fixing ring to pass through; Alternatively, the first hole includes a first sub-hole and a second sub-hole, the first sub-hole can be used for the passage of an unextruded fixing ring, or the first sub-hole is connected to the second sub-hole and can be used for the passage of an unextruded fixing ring, and the second sub-hole can be used for the passage of an extruded fixing ring; wherein 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.

11. A locking and cutting device, characterized in that: The locking and cutting device comprises a fixing 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 fixing ring locking wire unit and is located at an end of the main body away from the first hole.

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