Thread passing device for soft tissue repair

Abstract

The invention provides a thread passing device for soft tissue repair, the two sides of the thread passing device in the length direction are the head side and the tail side respectively, the thread passing device comprises a movable part and a fixed part which are arranged in the length direction of the thread passing device, and the movable part and the fixed part are sequentially arranged in the height direction of the thread passing device. Wherein one side, opposite to the fixed part, of the movable part is a tissue side. According to the thread passing device for soft tissue repair, one end of the head side of the thread passing device penetrates into a body, after the thread passing device reaches a target position where a thread needs to pass, the soft tissue containing area is opened, the soft tissue where the thread needs to pass is placed in the soft tissue containing area, the thread hooking piece is further used for clamping a thread located on the rear thread positioning part and pulling the thread upwards, and thread passing of the target is completed; compared with a traditional threading device, the threading device for soft tissue repair has the advantages that threading difficulty is lowered, and the threading device is simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of soft tissue repair, in particular to a wire passer for soft tissue repair. Background Art

[0002] Arthroscopic surgery is an important means for orthopedics to treat soft tissue tears and ruptures within joints. It can be used in multiple sub-disciplines, such as sports medicine and foot and ankle surgery. It can be applied to joints such as the shoulder, elbow, wrist, hip, knee, and ankle. It targets diseases including rotator cuff injury, biceps tendonitis, anterior / posterior cruciate ligament, etc.

[0003] Taking the biceps tendon fulcrum fixation for biceps tendonitis as an example, the traditional surgical plan is to use a wire grabber to loop the wire, which is complicated to operate and time-consuming. It includes grabbing the midpoint of the wire to pass through the tendon, pulling back, grabbing the tail ends of the two wires to cross the tendon and enter the coil sleeve, pulling back, crossing the midpoint of the wire to grab the tail ends of the two wires, and pulling out the tail ends of the two wires to tighten them. The existing wire passers include the Scopion wire passer from Arthrex of the United States and the Truepass wire passer from Smith & Nephew of the United States. This type of wire passer can achieve puncture and looping effects, but the structure is delicate and complex, with many mechanical structures and is expensive.

[0004] Therefore, in order to solve the above problems, the present invention proposes a wire passer for soft tissue repair that can reduce the difficulty of wire passing and has a simple structure and low manufacturing cost. Summary of the Invention

[0005] In order to solve the above problems in the prior art, the present invention provides a wire passer for soft tissue repair.

[0006] According to one object of the present invention, the present invention provides a wire passer for soft tissue repair, wherein the two sides of the wire passer in the length direction are respectively the head side and the tail side, the wire passer includes a movable part and a fixed part both arranged along the length direction of the wire passer, and the movable part and the fixed part are arranged in sequence in the height direction of the wire passer, wherein the side opposite to the movable part and the fixed part is the tissue side, and a soft tissue accommodating area is provided between the tissue side of the movable part and the tissue side of the fixed part, and the movable part is movably arranged in a manner of approaching and moving away from the fixed part in the height direction of the wire passer to open and close the soft tissue accommodating area on the head side of the wire passer;

[0007] A wire channel for the movement of the wire is provided in the fixing part along the length direction, two front wire openings communicating with the inside and outside of the wire channel are opened on the head side of the tissue side of the fixing part, the front wire openings are arranged at intervals along the width direction of the wire passer, and the fixing part is provided with a rear wire positioning portion between the front wire openings, and both ends of the wire are adapted to respectively pass through the wire channel through one of the front wire openings, and both ends of the wire are provided with a pulling force toward the tail side of the wire passer to tension the wire, a front wire positioning portion is provided at one end on the head side of the movable part, and the middle of the wire corresponds to the front wire positioning portion and the rear wire positioning portion respectively;

[0008] A hooking piece is provided on the tissue side of the movable part, and the hooking piece is configured to grab the wire located at the rear line positioning portion. The hooking piece and the rear line positioning portion are both located at the head side of the soft tissue accommodating area.

[0009] Preferably, the wire guide has at least four continuous working states, namely, an initial closed state, an initial open state, a hooked closed state and a hooked open state;

[0010] When the wire guide is in an initial closed state, the head side of the soft tissue accommodating area is closed, and the middle portion of the wire corresponds to the front line positioning portion;

[0011] When the wire guide is in an initially open state, the head side of the soft tissue accommodating area is open, and the middle portion of the wire corresponds to the rear wire positioning portion;

[0012] When the wire guide is in the hooking closed state, the head side of the soft tissue accommodating area is closed, and the wire hooking member grabs the middle portion of the wire located at the rear wire positioning portion;

[0013] When the wire guide is in the hooked open state, the head side of the soft tissue accommodating area is opened, the wire hook grabs the middle part of the wire located at the rear wire positioning part and moves upward, and the wire closes the head side of the soft tissue accommodating area.

[0014] Preferably, a puncture structure is provided at one end of the head side of the fixing member, and the puncture member is configured to be suitable for tissue puncture.

[0015] Preferably, a wire groove is opened on the tissue side of the fixing piece along the width direction of the wire passer, and the front wire opening is located on the inner wall of the tail side of the wire groove. The inner wall of the wire groove is curved, and the depth of the wire groove gradually increases as it approaches the tail side and the head side.

[0016] Preferably, a receiving groove is provided on the tissue side of the fixing member, and the receiving groove matches the thread hook member. When the thread passer is in the initial closed state and the hook closed state, the clamping member is located on the inner side of the receiving groove.

[0017] Preferably, the thread hooking member includes an extension portion and a hooking portion connected in sequence along the length direction, one end of the extension portion is connected to the tissue side of the movable member, and the other end of the extension portion extends downward along the height direction of the thread passer, and the hooking portion is connected to one side of the extension portion in the length direction of the thread passer, and the end of the hooking portion extends upward, and the hooking portion, the extension portion and the tissue side of the movable member form a hooking area with an opening toward one side in the length direction of the thread passer, and the hooking area corresponds to the rear thread positioning portion.

[0018] Preferably, the lower end surface of the hooking portion is an inclined surface, the height of the inclined surface gradually increases as it approaches the opening of the hooking area, and the inclined surface corresponds to the rear line positioning portion.

[0019] Preferably, the tail side of the movable part and the tail side of the fixed part are connected by a rotating pair, the fixed part extends toward the tail side to form a main body, the tail side of the main body is provided with a fixed handle and a movable handle, the fixed handle and the tail side of the main body are fixedly connected, the head side of the movable handle and the tail side of the main body are connected by a rotating pair, wherein the movable handle is located below the fixed handle, and the movable handle controls the connection of the movable part.

[0020] Preferably, the wire channel is arranged in the main body along the length direction of the wire passer, and a rear wire opening communicating with the inside and outside of the wire channel is opened on the rear side of the main body.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The wire passer for soft tissue repair can be inserted into the body through one end on the head side of the wire passer. After reaching the target position where the wire needs to be passed, the soft tissue accommodating area is opened and the soft tissue to be passed through the wire is placed in the soft tissue accommodating area. The wire located at the rear wire positioning part is further clamped by the wire hook and pulled upward to complete the wire passing to the target. Finally, the wire is looped around the body and tightened. Compared with traditional wire passers, the wire passer for soft tissue repair has the advantages of simple structure and low manufacturing cost while reducing the difficulty of wire passing.

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an overall schematic diagram of one embodiment of a thread guide for soft tissue repair according to the present invention;

[0025] Figure 2 This is a schematic diagram of the head side of one embodiment of a wire guide for soft tissue repair according to the present invention;

[0026] Figure 3This is a schematic head-side view of another embodiment of a wire passer for soft tissue repair according to the present invention. DETAILED DESCRIPTION

[0027] The following description is intended to fully illustrate the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are intended to be exemplary only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0028] See also Figure 1-3 The present invention provides a technical solution: a wire passer for soft tissue repair, wherein the two sides of the wire passer in the length direction are respectively a head side a and a tail side b, the wire passer includes a movable part 100 and a fixed part 200 both arranged along the length direction of the wire passer, and the movable part 100 and the fixed part 200 are arranged in sequence in the height direction of the wire passer, wherein the side opposite to the movable part 100 and the fixed part 200 is a tissue side c, and a soft tissue accommodating area A is provided between the tissue side c of the movable part 100 and the tissue side c of the fixed part 200, and the movable part 100 is movably arranged in a manner of approaching and moving away from the fixed part 200 in the height direction of the wire passer to open and close the soft tissue accommodating area A on the head side a of the wire passer;

[0029] A wire channel 200a for the movement of the wire is provided in the fixing member 200 along the length direction, and two front wire openings 200a1 communicating with the inside and outside of the wire channel 200a are provided on the head side a of the tissue side c of the fixing member 200, and the front wire openings 200a1 are arranged at intervals along the width direction of the wire passer, and the fixing member 200 is provided with a rear wire positioning portion B between the front wire openings 200a1, and both ends of the wire are adapted to respectively pass through the wire channel 200a through one of the front wire openings 200a1, and both ends of the wire are provided with a pulling force toward the tail side b of the wire passer to tension the wire, and a front wire positioning portion C is provided at one end of the head side a of the movable member 100, and the middle part of the wire corresponds to the front wire positioning portion C and the rear wire positioning portion B respectively;

[0030] A hooking member 300 is provided on the tissue side c of the movable member 100 , and the hooking member 300 is configured to grab the wire located at the rear line positioning portion B. The hooking member 300 and the rear line positioning portion B are both located at the head side a of the soft tissue accommodating area A.

[0031] Compared with traditional wire passers, which can achieve puncture and looping effects but have delicate and complex structures, multiple mechanical structures and are expensive, this wire passer reduces the difficulty of wire passing. At the same time, it has a simple mechanical structure, low cost, and can be reused many times after disinfection and is not easy to damage. In addition, this wire passer can be used by one person with one hand using a single channel and a single instrument to achieve a looping effect, and the effect is stable.

[0032] The wire guide has at least four continuous working states, namely, an initial closed state, an initial open state, a hooked closed state and a hooked open state;

[0033] When the wire guide is in the initial closed state, the head side a of the soft tissue accommodating area A is closed, and the middle portion of the wire corresponds to the front line positioning portion C;

[0034] When the wire guide is in the initial open state, the head side a of the soft tissue accommodating area A is open, and the middle portion of the wire corresponds to the rear wire positioning portion B;

[0035] When the wire guide is in the hooking closed state, the head side a of the soft tissue accommodating area A is closed, and the wire hooking member 300 grabs the middle part of the wire located at the rear wire positioning portion B;

[0036] When the wire guide is in the hook-open state, the head side a of the soft tissue accommodating area A is opened, and the wire hook 300 grabs the middle part of the wire located at the rear wire positioning part B and moves upward, and the wire closes the head side a of the soft tissue accommodating area A.

[0037] When in use, the end of the wire passer on the head side a in the initial closed state is inserted into the body to reach the target position where the wire needs to be passed, the wire passer is switched to the initial open state and moved forward to approach the target until the target is located in the soft tissue accommodating area A, the wire passer is switched to the hooking closed state, and the wire located at the rear wire positioning part B is hooked by the wire hooking member 300, and the wire passer is further switched to the hooking open state. The wire is pulled upward by the wire hooking member 300 and moves backward away from the target, completing the wire passing to the target. The wire can be looped around the body and tightened.

[0038] In this embodiment, the tail side b of the movable part 100 and the tail side b of the fixed part 200 are connected by a rotating pair, and the fixed part 200 extends toward the tail side b to form a main body 400, and the tail side b of the main body 400 is provided with a fixed handle 500 and a movable handle 600, and the fixed handle 500 is fixedly connected to the tail side b of the main body 400, and the head side a of the movable handle 600 and the tail side b of the main body 400 are connected by a rotating pair, wherein the movable handle 600 is located below the fixed handle 500, and the movable handle 600 controls the connection with the movable part 100. Specifically, a transmission structure is provided between the movable handle 600 and the movable part 100. In one embodiment, the transmission structure is the same as the transmission structure between the movable handle and the movable pliers head in a suturing gun with a limiting function disclosed in the Chinese utility model patent with publication number CN220193085U, and will not be described in detail here.

[0039] The wire channel 200a is arranged in the main body 400 along the length direction of the wire passer, and the tail side b of the upper end of the main body 400 is provided with a rear wire opening 200a2 that connects the inside and outside of the wire channel 200a. When in use, the end of the wire can be pulled out from the rear wire opening 200a2 to apply tension to ensure that the wire maintains tension. Furthermore, the rear wire opening 200a2 corresponds to the wire inlet one by one, and the rear wire openings 200a2 are arranged at intervals along the width direction of the wire passer. There are two wire channels 200a, and the two ends of each wire channel 200a in the length direction are respectively the front wire opening 200a1 and the rear wire opening 200a2.

[0040] One end of the head side a of the fixing member 200 is provided with a puncture structure, and the puncture member is configured to be suitable for tissue puncture.

[0041] A wire groove 201 is formed on the tissue side c of the fixing member 200 along the width direction of the wire passer, and the front wire opening 200a1 is located on the inner wall of the tail side b of the wire groove 201. By limiting the position of the front wire opening 200a1, when the wire passer switches between the initial closed state and the initial open state, the wire can slide into the wire groove 201 to facilitate the wire hook member 300 to grab the wire. Furthermore, the inner wall of the wire groove 201 is curved, wherein the depth of the wire groove 201 gradually increases as it approaches the tail side b and the head side a, so as to increase the grabbing effect of the grabbing member on the wire in the wire groove 201.

[0042] The tissue side c of the fixing member 200 is provided with a receiving groove 202, and the receiving groove 202 matches the thread hook member 300. When the thread passer is in the initial closed state and the hook closed state, the clamping member is located on the inner side of the receiving groove 202 to reduce the size of the end portion of the head side a of the thread passer when the thread passer is in the initial closed state and the hook closed state.

[0043] The thread hooking member 300 is arranged in a hook shape. Specifically, the thread hooking member 300 includes an extension portion 301 and a hooking portion 302 connected in sequence along the length direction, one end of the extension portion 301 is connected to the tissue side c of the movable member 100, and the other end of the extension portion 301 extends downward along the height direction of the thread passer, and the hooking portion 302 is connected to one side of the extension portion 301 in the length direction of the thread passer, and the end of the hooking portion 302 extends upward, and the hooking portion 302, the extension portion 301 and the tissue side c of the movable member 100 form a hooking area D with an opening facing one side in the length direction of the thread passer, and the hooking area D corresponds to the rear thread positioning portion B, wherein the size of the thread hooking member 300 can be adjusted according to actual conditions;

[0044] Furthermore, the lower end surface of the hooking portion 302 is a slope, and the height of the slope gradually increases as it approaches the opening of the hooking area D. On the moving trajectory of the movable part 100, the slope and the hooking area D respectively correspond to the rear line positioning part B. By setting the lower end of the hooking portion 302 as a slope, when in use, the slope of the lower end of the hooking portion 302 is in contact with the wire, the slope can provide guidance for the wire, so that the wire can slide through the opening into the hooking area D, thereby completing the hooking of the wire by the wire hooking member 300.

[0045] In one embodiment, the number of the thread hooking member 300 is one, and in another embodiment, the number of the thread hooking member 300 is two. The thread hooking members 300 are arranged at intervals along the length direction of the thread passer, and the openings of the hooking area D on the thread hooking member 300 are arranged relatively.

[0046] How to use:

[0047] Taking tendon threading as an example, first switch the thread threader to the initial closed state, hang the midpoint of the wire on the front thread positioning part C, and insert the front thread opening 200a1 at both ends of the wire in the length direction into the wire channel 200a;

[0048] The sharp structure at the head end a of the wire passer is used to puncture the soft tissue. When the head end a of the wire passer is moved to the target position where the wire needs to be passed, the wire passer is switched to the initial open state, and a pulling force is applied to the end of the wire toward the tail end b. The middle part of the wire is withdrawn to the rear wire positioning part B, and the tension of the wire is maintained.

[0049] Push the end a of the head side of the wire guide to the farthest end, and the tendon enters the soft tissue accommodation area A through the opening of the soft tissue accommodation area A. Switch the wire guide to the hooking closed state, avoiding pressing into the soft tissue during the process. At this time, the wire hooking member 300 grabs the middle part of the wire located at the rear wire positioning part B;

[0050] The wire guide is switched to the hooking open state, the wire hooking member 300 lifts the midpoint of the wire, the wire guide is retracted outside the body, and the wire is looped around the body and then tightened.

[0051] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of the patent application of the present invention cannot be limited by these embodiments alone. That is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the patent scope of the present invention.

Claims

1. A thread guide for soft tissue repair, characterized in that: The two sides of the wire passer in the length direction are respectively the head side and the tail side, the wire passer includes a movable part and a fixed part both arranged along the length direction of the wire passer, and the movable part and the fixed part are arranged in sequence in the height direction of the wire passer, wherein the side opposite to the movable part and the fixed part is the tissue side, and a soft tissue accommodating area is provided between the tissue side of the movable part and the tissue side of the fixed part, and the movable part is movably arranged in a manner of approaching and moving away from the fixed part in the height direction of the wire passer to open and close the soft tissue accommodating area on the head side of the wire passer; A wire channel for the movement of the wire is provided in the fixing part along the length direction, two front wire openings communicating with the inside and outside of the wire channel are opened on the head side of the tissue side of the fixing part, the front wire openings are arranged at intervals along the width direction of the wire passer, and the fixing part is provided with a rear wire positioning portion between the front wire openings, and both ends of the wire are adapted to respectively pass through the wire channel through one of the front wire openings, and both ends of the wire are provided with a pulling force toward the tail side of the wire passer to tension the wire, a front wire positioning portion is provided at one end on the head side of the movable part, and the middle of the wire corresponds to the front wire positioning portion and the rear wire positioning portion respectively; A hooking piece is provided on the tissue side of the movable part, and the hooking piece is configured to grab the wire located at the rear line positioning portion. The hooking piece and the rear line positioning portion are both located at the head side of the soft tissue accommodating area.

2. A thread guide for soft tissue repair according to claim 1, characterized in that: The wire guide has at least four continuous working states, namely, an initial closed state, an initial open state, a hooked closed state and a hooked open state; When the wire guide is in an initial closed state, the head side of the soft tissue accommodating area is closed, and the middle portion of the wire corresponds to the front line positioning portion; When the wire guide is in an initially open state, the head side of the soft tissue accommodating area is open, and the middle portion of the wire corresponds to the rear wire positioning portion; When the wire guide is in the hooking closed state, the head side of the soft tissue accommodating area is closed, and the wire hooking member grabs the middle portion of the wire located at the rear wire positioning portion; When the wire guide is in the hooked open state, the head side of the soft tissue accommodating area is opened, the wire hook grabs the middle part of the wire located at the rear wire positioning part and moves upward, and the wire closes the head side of the soft tissue accommodating area.

3. A thread guide for soft tissue repair according to claim 1, characterized in that: One end of the fixing member on the head side is provided with a puncture structure, and the puncture member is configured to be suitable for tissue puncture.

4. A thread guide for soft tissue repair according to claim 1, characterized in that: A wire groove is opened on the tissue side of the fixing piece along the width direction of the wire passer, and the front wire opening is located on the inner wall of the tail side of the wire groove. The inner wall of the wire groove is curved, and the depth of the wire groove gradually increases as it approaches the tail side and the head side.

5. A thread guide for soft tissue repair according to claim 2, characterized in that: The tissue side of the fixing piece is provided with a receiving groove, and the receiving groove matches the thread hooking piece. When the thread passer is in the initial closed state and the hooked closed state, the clamping piece is located on the inner side of the receiving groove.

6. A thread guide for soft tissue repair according to claim 1, characterized in that: The thread hooking member includes an extension portion and a hooking portion that are sequentially connected along the length direction, one end of the extension portion is connected to the tissue side of the movable member, and the other end of the extension portion extends downward along the height direction of the thread passer, the hooking portion is connected to one side of the extension portion in the length direction of the thread passer, and the end of the hooking portion extends upward, and the hooking portion, the extension portion and the tissue side of the movable member form a hooking area with an opening toward one side in the length direction of the thread passer, and the hooking area corresponds to the rear thread positioning portion.

7. A thread guide for soft tissue repair according to claim 6, characterized in that: The lower end surface of the hooking portion is an inclined surface, the height of the inclined surface gradually increases in a manner close to the opening of the hooking area, and the inclined surface corresponds to the rear line positioning portion.

8. A thread guide for soft tissue repair according to claim 1, characterized in that: The tail side of the movable part and the tail side of the fixed part are connected by a rotating pair, the fixed part extends toward the tail side to form a main body, the tail side of the main body is provided with a fixed handle and a movable handle, the fixed handle and the tail side of the main body are fixedly connected, the head side of the movable handle and the tail side of the main body are connected by a rotating pair, wherein the movable handle is located below the fixed handle, and the movable handle controls the connection of the movable part.

9. A thread guide for soft tissue repair according to claim 1, characterized in that: The wire channel is arranged in the main body along the length direction of the wire passer, and a rear wire opening communicating with the inside and outside of the wire channel is opened on the tail side of the main body.

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