Artificially woven ligament

Abstract

The invention relates to an artificial woven ligament, and relates to the technical field of artificial woven ligaments, the artificial woven ligament comprises a plurality of woven bodies which are different in diameter and are of cylindrical structures, and the plurality of woven bodies are mutually sleeved and are mutually connected through fixing parts to form the ligament. According to the application, the plurality of weaving bodies with different diameters are manufactured in advance, then the plurality of weaving bodies with different diameters are mutually sleeved together according to the required ligament diameter, and the plurality of weaving bodies are fixedly connected to form the ligament through the fixing piece, so that the ligament does not need to be rolled on site, can meet the requirements of different diameters, does not need to be cut, and is convenient to use. Therefore, a doctor can concentrate more energy to perform an operation, the implantation effect is improved, and the quality and efficiency of the operation are improved.

Description

Technical Field

[0001] The present application relates to the technical field of artificial ligaments, and in particular to an artificial braided ligament. Background Art

[0002] The LARS artificial ligament is made of polyester material and has high biocompatibility and mechanical properties. It is suitable for patients with ruptured or severe damage to the anterior cruciate ligament of the knee due to sports injuries, traffic accidents or other reasons. Its main advantage is fast postoperative recovery and its porous structure facilitates the ingrowth of bone tissue.

[0003] However, the LARS artificial ligament currently on the market adopts a sheet-like woven structure, which needs to be rolled into a cylindrical structure during implantation, forming a shape that is narrow at both ends and wide in the middle, and then tied with sutures to achieve the effect of simulating a ligament. The two ends of the ligament are then connected to the joint. However, this structure is highly dependent on the doctor's rolling technique during surgery, and it is also inconvenient to adjust the diameter of the artificial ligament, which requires cutting. As a result, the edges of the artificial ligament are uneven, affecting the implantation effect, which in turn affects the quality and efficiency of the surgery. Summary of the invention

[0004] In order to improve the quality and efficiency of surgery, the present application provides an artificial braided ligament.

[0005] The present application provides an artificial braided ligament, which adopts the following technical solution: An artificial braided ligament comprises a plurality of braided bodies with different diameters and in a tubular structure, wherein the plurality of braided bodies are mutually sleeved and connected to each other through fixings to form a ligament; the braided body comprises a connection area and braided areas located at both ends of the connection area, and the fixings are a plurality of groups of braided fixing lines distributed along the axis of the braided body, and each group of the braided fixing lines sequentially and reciprocally pass through the braided areas of the plurality of braided bodies in the circumferential direction of the braided body for suturing.

[0006] By adopting the above technical solution, a plurality of braided bodies with different diameters are pre-made, and then the plurality of braided bodies with different diameters are mutually nested together according to the required ligament diameter, and the plurality of braided bodies are fixedly connected by fixing parts to form a ligament. The plurality of mutually nested ligaments improve their strength, so that the strength of the finally formed ligament can meet the needs of the operation. Therefore, there is no need for on-site rolling, and it can also meet the needs of different diameters without cutting, so that the doctor can concentrate more on the operation, which improves the implantation effect and improves the quality and efficiency of the operation.

[0007] The two weaving areas are used to connect with the joints to meet the connection requirements, and the connection area is used to meet the needs of subsequent joint activities. The two requirements are different, so different functional partitions are used to meet the needs of connection and activity, which can greatly improve the quality of artificial ligaments and post-operative quality, and improve the quality and efficiency of the operation.

[0008] A group of braided fixing lines are passed through the braided areas of multiple braided bodies in the same horizontal plane in turn to perform suturing, and the multiple braided bodies are connected as one through the cooperation of multiple groups of braided fixing lines, thereby improving the firmness of the multiple braided bodies after connection, and also improving the convenience in the sewing process, thereby improving the quality and efficiency of the operation; and since the connection area requires ligaments during joint movement, the requirements for the connection area are relatively high, so the braided fixing line passes through the braided area instead of the connection area, thereby reducing the adverse effects of the braided fixing line on the connection area when connected, further improving the quality of the ligaments, and improving the quality of the operation.

[0009] Optionally, the weaving area, after unfolding, is a rectangular sheet structure and has four sides provided with interconnected edge sealing structures, the weaving area includes several groups of weft threads and several weaving warp threads, several groups of weft threads are arranged horizontally and each group of weft threads includes two weft threads that are intertwined and in a spiral state; several of the weaving warp threads are arranged longitudinally and are woven in series with several groups of weft threads.

[0010] By adopting the above technical solution, the weaving area needs to be connected to the joint, and after the connection, the bone tissue needs to enter the weaving area and be fixedly connected as one. Therefore, a porous structure is formed by the cooperation of the weft and the warp, so that the bone tissue grows through the porous structure and is connected as one, thereby improving the stability of the weaving area after the connection with the joint. Furthermore, the two wefts in each group are intertwined and spiral, so that the human tissue grows into the spiral gap, and the spiral bone tissue can further improve the firmness of the connection, thereby further improving the stability of the weaving area after the connection with the joint and improving the quality of the operation.

[0011] At the same time, the edge sealing structure can improve the stability and firmness of the braided area structure, thereby further improving the stability of the braided area after connection with the joint and improving the quality of the operation.

[0012] Optionally, the woven body is formed by rolling the woven area into a tubular structure and then sewing it with a suture thread. The two edge sealing structures that are in contact with the woven area when rolling are edge sealing one and the other two edge sealing structures are edge sealing two. When sewing, the suture thread is spirally wound around the two edge sealing twos located at both ends of the woven body and cross-wound around edge sealing one and fixed after being tightened. The edge sealing one is made of non-elastic material, and the edge sealing two is made of elastic material and shrinks to form a closed shape under the pulling action of the suture thread.

[0013] By adopting the above technical scheme, after the two woven areas are rolled into a cylindrical structure, the two edge seals 1 are pressed against each other for positioning, the suture thread is spirally wound on the edge seal 2 at one end, and then the suture threads are cross-wound on the two contacting edge seals 1, and finally the suture threads are spirally wound on the edge seal 2 at the other end, and finally the suture threads are tightened to fix them, so that the two edge seals 1 are pressed against each other for positioning, and at the same time, when the suture threads are tightened, the two edge seals 2 can also shrink to form a shrinking shape.

[0014] The two side seals made of non-elastic material are positioned against each other. The two side seals can be made of a material with high stability and hardness, so that the woven body can maintain the required stability after suturing, reducing the probability of deformation of the warp and weft lines due to the abutment together, improving the quality of the ligament, and at the same time forming a closed shape through the side seal two, that is, forming an inwardly shrinking guide structure at both ends of the woven body, thereby facilitating the implantation of the two ends of the woven body into the joint, improving the convenience of the doctor during surgery, thereby improving the quality and efficiency of the surgery.

[0015] Optionally, the connecting area is composed of a plurality of longitudinally arranged connecting warp threads, and the plurality of connecting warp threads are woven with the weft threads located in the two weaving areas.

[0016] By adopting the above technical solution, several longitudinally arranged connecting warps, that is, the connecting warps are arranged along the direction from one joint to another joint, and the connecting warps on the multiple woven bodies cooperate to form a mesh structure. The connecting warps on the multiple woven bodies are not connected to each other by the connecting structure. Therefore, it can better simulate the state of natural ligaments, improve the quality of the ligaments, and improve the quality and efficiency of the operation.

[0017] Optionally, two titanium plate fixing wires are laterally arranged on the two braided areas and are mirror-set with respect to the axis of the braided body. The titanium plate fixing wires are used to connect with the titanium plate body during surgery to achieve ligament fixation.

[0018] By adopting the above technical solution, after the two ends of the ligament are implanted into the two joints, it is necessary to use a fixing wire to connect with the titanium plate to position the two ends of the ligament. Therefore, it is necessary to tie the fixing wire to the two ends of the ligament, and then pass the fixing wire through the joint. At the same time, the movement of the two fixing wires also pulls the two ends of the ligament to be implanted into the joint, and finally the fixing wire is fixedly connected with the titanium plate to fix the two ends of the ligament. However, it is difficult to ensure the firmness between the fixing wire and the ligament by on-site binding, and it also takes some time, which reduces the quality and efficiency of the operation.

[0019] The titanium plate fixing wire is woven into one when the braided body is woven. Therefore, during the operation, the titanium plate fixing wires at both ends of the braided body are passed through the two joints in turn. The fixing wires move and pull the two ends of the ligament to be implanted in the two joints. Finally, the titanium plate fixing wire is fixedly connected to the titanium plate body to fix the two ends of the ligament, thereby improving the firmness between the titanium plate fixing wire and the ligament and the titanium plate body, and there is no need to tie the titanium plate fixing wire, thereby improving the quality and efficiency of the operation.

[0020] Optionally, two titanium plate fixing wires located in the same braiding area are arranged in a circular array around the axis of the braided body with an angle of 40°-50°, and the two titanium plate fixing wires penetrate from the side wall of the braided body toward the axis of the braided body and then pass out parallel to the axis of the braided body.

[0021] By adopting the above technical solution, when the titanium plate fixing wire and the braided body are coaxially arranged, the force between the titanium plate fixing wire and the braided body is most balanced, thereby improving the stability between the two. At the same time, the titanium plate fixing wire is woven on the braided body, so the angle at which the titanium plate fixing wire enters the axis of the braided body and the position of the titanium plate fixing wire on the braided body will also affect the stability between the two. Therefore, entering at an angle of 40°-50° can achieve the best stability between the two, thereby improving the quality and efficiency of the operation.

[0022] Optionally, at least two thickened areas are provided on the braided area, and the thickened area is a single-layer annular braided structure.

[0023] By adopting the above technical solution, the thickened area can make the contact with the bone tunnel closer, thereby enhancing the overall strength after the bone tissue grows in.

[0024] Optionally, the width of the thickened area is 1.2-5 mm, and the distance between two adjacent thickened areas is between 5 mm and 10 mm.

[0025] By adopting the above technical solution, multiple thickened areas can cooperate to achieve the above effects. At the same time, the arrangement data of the thickened areas can be obtained according to the diameter of the woven body, so that the arrangement data of the thickened areas matches the diameter of the woven body, making the contact with the bone tunnel closer, while also reducing the adverse effects on the diameter of the woven body.

[0026] Optionally, the material of one of the weft threads in each group is one of polytetrafluoroethylene, polyethylene, polycaprolactone, polylactic acid, and polyvinyl alcohol, and the material of the other weft thread is titanium alloy.

[0027] By adopting the above technical solution, one of the wefts can simulate the effect of the basic ligament, while the other weft titanium alloy can improve the strength of the braided area, improve the quality of the ligament, and improve the quality of the operation.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. Pre-fabricate multiple braided bodies with different diameters, and then according to the required ligament diameter, put the multiple braided bodies with different diameters together, and fix the multiple braided bodies together through fixing parts to form a ligament. Therefore, there is no need for on-site rolling, and it can also meet the needs of different diameters without cutting, so that doctors can focus more on the operation, improve the implantation effect, and improve the quality and efficiency of the operation.

[0029] 2. A porous structure is formed by the combination of weft and warp, so that bone tissue can grow through the porous structure and become one, thereby improving the stability of the woven area after connection with the joint, and also allowing human tissue to grow into the spiral gap. The spiral bone tissue can further improve the firmness of the connection, thereby further improving the stability of the woven area after connection with the joint and improving the quality of the operation.

[0030] 3. The two edge bands made of non-elastic material are pressed against each other for positioning, so that the woven body can maintain the required stability after suturing, reducing the probability of deformation of the warp and weft lines due to pressing against each other, improving the quality of the ligament, and at the same time forming a closed shape through the edge band two, so that it is convenient to implant the two ends of the woven body into the joint, improving the convenience of the doctor during surgery, thereby improving the quality and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of artificial braided ligament surgery in the prior art; Figure 2 It is a schematic diagram of the planar structure of the artificial braided ligament; Figure 3 It is a schematic diagram of the structure of the braided body, the fixing part and the titanium plate fixing line in the artificial braided ligament; Figure 4 It is a schematic diagram of the structure of the braided area in the artificial braided ligament; Figure 5 It is a schematic diagram of the structure of the braided body in the artificial braided ligament when it is rolled.

[0032] Figure numerals: 1. joint; 11. bone tunnel one; 12. bone tunnel two; 13. fixing wire body; 14. titanium plate body; 2. woven body; 21. connection area; 22. woven area; 23. weft; 24. woven warp; 25. connecting warp; 26. thickened area; 31. woven fixing wire; 4. edge sealing structure; 41. edge sealing one; 42. edge sealing two; 5. titanium plate fixing wire; 6. suture. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5This application is described in further detail.

[0034] The embodiment of the present application discloses an artificial braided ligament.

[0035] Reference Figure 1 In the prior art, during artificial ligament surgery, it is necessary to first open a bone tunnel 11 and a bone tunnel 12 that are interconnected on the two joints 1 at the surgery site through tools. The diameter of the bone tunnel 11 is larger than the diameter of the bone tunnel 12. At the same time, the two bone tunnels 11 are located on the opposite side walls of the two joints 1, and the two bone tunnels 12 pass through the opposite side walls of the two joints 1; connect two fixing wires 13 to the two ends of the ligament, and then pass the two fixing wires 13 through the bone tunnel 11 and the bone tunnel 2 12 respectively, pull the two fixing wires 13 so that the two ends of the ligament are implanted in the two bone tunnels 11, and finally, fix the two fixing wires 13 on the two titanium plates 14, and the two titanium plates 14 are pressed against the opposite side walls of the two joints 1, so as to realize the positioning of the two ends of the ligament.

[0036] Reference Figure 2 and Figure 3 The artificial braided ligament includes a plurality of braided bodies 2 of different diameters and in a tubular structure. The plurality of braided bodies 2 are mutually sleeved and connected to each other through fixings to form an artificial ligament. According to the required diameter of the ligament, the plurality of braided bodies 2 are mutually sleeved and then connected to form a ligament through fixings. The outer diameter of the outermost braided body 2 is the required diameter of the ligament. The plurality of braided bodies 2 are mutually sleeved to form a nearly solid structure, thereby improving the strength of the ligament and making the strength of the ligament meet the requirements. Therefore, the doctor does not need to roll it on site during the operation, and can also meet the requirements of different diameters, so that the doctor can focus more on the operation, improve the implantation effect, and improve the quality and efficiency of the operation.

[0037] Reference Figure 2 and Figure 4 The woven body 2 includes a connecting area 21 and a woven area 22 located at both ends of the connecting area 21. The woven area 22 and the connecting area 21 are both rectangular sheet structures when unfolded, and the four sides of the woven area 22 are provided with mutually connected edge sealing structures 4; the woven area 22 includes a plurality of groups of weft threads 23 and a plurality of weaving warps 24, and the plurality of groups of weft threads 23 are arranged transversely, that is, arranged at intervals along the axis of the woven body 2, and each group of weft threads 23 includes two weft threads 23 that are intertwined and in a spiral state, wherein the material of one of the weft threads 23 is one of polytetrafluoroethylene, polyethylene, polycaprolactone, polylactic acid, and polyvinyl alcohol, and the material of the other weft thread 23 is titanium alloy.

[0038] A plurality of weaving warps 24 are longitudinally arranged, that is, spaced apart in a direction perpendicular to the axis of the weaving body 2, and a plurality of weaving warps 24 are woven in series with a plurality of groups of wefts 23 to form a weaving area 22. The connecting area 21 is composed of a plurality of longitudinally arranged connecting warps 25, and the plurality of connecting warps 25 are woven with the wefts 23 located in the two weaving areas 22. The two edge sealing structures 4 located on the weaving area 22 and arranged vertically are edge sealing 1 41 and are made of non-elastic material, and the two edge sealing structures 4 arranged horizontally are edge sealing 2 42 and are made of elastic material.

[0039] Reference Figure 2 and Figure 5 The braided body 2 is formed by rolling two braided areas 22 into a tubular structure and then sewing them with a suture 6. During rolling, the connecting area 21 also forms a tubular structure, and the two edge seals 41 located in the two braided areas 22 are both pressed against each other for positioning during rolling. When sewing, the suture 6 is spirally wound around the edge seal 2 42 and then cross-wound around the edge seal 1 41, and finally spirally wound around the edge seal 2 42 on the other side. Finally, the suture 6 is tightened for sewing and fixing, so that the two edge seals 41 are pressed against each other for positioning, and when the suture 6 is tightened, the two edge seals 42 are contracted and closed inward, so that guide portions are formed at both ends of the braided body 2 for easy implantation.

[0040] Reference Figure 2 and Figure 3 The fixing members are a plurality of groups of braided fixing wires 31 spaced apart along the axis of the braided body 2. Each group of braided fixing wires 31 is on the same horizontal plane and reciprocates through the braided areas 22 of the plurality of braided bodies 2 in the circumferential direction of the braided body 2 for multiple stitching.

[0041] Reference Figure 1 and Figure 2 , multiple groups of thickened areas 26 are arranged at intervals on both braided areas 22 around the axis of the braided body 2, at least two groups of thickened areas 26 are arranged, the thickened areas 26 are a single-layer annular braided structure, and the single-layer annular braided structure is the same as the structure of the braided area 22; the width of the thickened area 26 is 1.2-5mm, and the distance between two adjacent thickened areas 26 is between 5mm-10mm. According to design requirements, the thickened area 26 is arranged on the outside or inside or both sides of the cylindrical structure of the braided area 22, so that the braided area 22 is in closer contact with the bone tunnel 11 and the bone tunnel 2 12, thereby enhancing the overall strength after the bone tissue grows into.

[0042] The distance between one end of the two braided areas 22 away from the connecting area 21 and the connecting area 21 is L, and two titanium plate fixing wires 5 for connecting and fixing with the titanium plate body 14 are transversely arranged on the two braided areas 22 and located at L / 2, that is, each braided body 2 is provided with a titanium plate fixing wire 5, which can be selected according to needs during surgery. If there are redundant titanium plate fixing wires 5, the doctor can cut off the titanium plate fixing wires 5.

[0043] Two titanium plate fixing wires 5 are arranged in a circular array around the axis of the braided body 2, and the angle between the two titanium plate fixing wires 5 is 40°-50°, so that the two titanium plate fixing wires 5 pass through the side wall of the braided area 22 at the above angle and then penetrate into the axis of the braided body 2. Finally, the two titanium plate fixing wires 5 pass through the axis of the braided body 2 in parallel with each other, so that the hand direction of the titanium plate fixing wire 5 relative to the braided body 2 can be as close as possible to the axis of the braided body 2 or even coincide with the axis of the braided body 2, thereby improving the stability of the ligament during the stress process.

[0044] During the operation, the doctor can directly pass the titanium plate fixing wire 5 through the bone tunnel 1 11 and the bone tunnel 2 12 in turn. The movement of the two titanium plate fixing wires 5 can pull the two ends of the ligament to be implanted into the two bone tunnels 11 respectively. Finally, the two titanium plate bodies 14 are connected to the two titanium plate fixing wires 5, so that the two titanium plate bodies 14 are positioned against the two joints 1, thereby realizing the implantation of the ligament. There is no need to tie the titanium plate fixing wire 5 to the ligament on site, which saves the time of the operation, improves the stability of the ligament, and improves the quality and efficiency of the operation.

[0045] The working principle of the embodiment of the present application is as follows: Before the operation, according to the required diameter of the ligament, multiple braided bodies 2 are overlapped with each other and then multiple groups of braided fixing lines 31 are passed through the multiple braided bodies 2 in sequence, so as to achieve the fixed connection of the multiple braided bodies 2, so as to obtain an artificial ligament of the required diameter. After the multiple braided bodies 2 are overlapped with each other, the strength of the ligament meets the requirements. Therefore, the doctor does not need to roll it on site during the operation, and it can also meet the needs of different diameters, so that the doctor can concentrate more on the operation, improve the implantation effect, and improve the quality and efficiency of the operation.

[0046] During the operation, the doctor passes the titanium plate fixing wires 5 located at both ends of the ligament through the bone tunnel 1 11 and the bone tunnel 2 12. The movement of the two titanium plate fixing wires 5 can pull the two ends of the ligament to be implanted into the two bone tunnels 1 1 respectively. Finally, the two titanium plate bodies 14 are connected to the two titanium plate fixing wires 5 so that the two titanium plate bodies 14 are positioned against the two joints 1, thereby realizing the implantation of the ligament. There is no need to tie the titanium plate fixing wires 5 to the ligament on site, which saves the time of the operation, improves the stability of the ligament, and improves the quality and efficiency of the operation.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An artificial braided ligament, characterized in that: The invention comprises a plurality of braided bodies (2) having different diameters and in a cylindrical structure, wherein the plurality of braided bodies (2) are mutually sleeved and connected to each other via fixings to form a ligament; the braided body (2) comprises a connection area (21) and braided areas (22) located at both ends of the connection area (21); the fixings are a plurality of groups of braided fixing wires (31) distributed along the axis of the braided body (2); each group of the braided fixing wires (31) sequentially and reciprocally pass through the braided areas (22) of the plurality of braided bodies (2) in the circumferential direction of the braided body (2) to perform suturing.

2. An artificial braided ligament according to claim 1, characterized in that: The braided area (22) is a rectangular sheet structure when unfolded and has four sides provided with mutually connected edge sealing structures (4). The braided area (22) comprises a plurality of groups of weft threads (23) and a plurality of braided warp threads (24). The plurality of groups of weft threads (23) are arranged transversely and each group of weft threads (23) comprises two weft threads (23) that are intertwined and in a spiral state. The plurality of braided warp threads (24) are arranged longitudinally and are braided in series with the plurality of groups of weft threads (23).

3. An artificial braided ligament according to claim 2, characterized in that: The braided body (2) is formed by rolling a braided area (22) into a cylindrical structure and then sewing it with a suture (6); the two edge sealing structures (4) in contact with the braided area (22) when it is rolled are edge sealing 1 (41) and the other two edge sealing structures (4) are edge sealing 2 (42); when the suture (6) is sewn, it is spirally wound around the two edge sealing 2 (42) located at the two ends of the braided body (2) and then cross-wound around the edge sealing 1 (41) and tightened to fix; the edge sealing 1 (41) is made of a non-elastic material, and the edge sealing 2 (42) is made of an elastic material and shrinks under the pulling action of the suture (6) to form a closed shape.

4. An artificial braided ligament according to claim 2, characterized in that: The connecting area (21) is composed of a plurality of longitudinally arranged connecting warp threads (25), and the plurality of connecting warp threads (25) are woven with the weft threads (23) located in the two weaving areas (22).

5. An artificial braided ligament according to claim 2, characterized in that: Two titanium plate fixing wires (5) are arranged transversely on the two braided areas (22) and are arranged in a mirror image with respect to the axis of the braided body (2). The titanium plate fixing wires (5) are used to connect with the titanium plate body (14) during surgery to achieve ligament fixation.

6. An artificial braided ligament according to claim 5, characterized in that: Two titanium plate fixing wires (5) located at the same braiding area (22) are arranged in a circular array around the axis of the braided body (2) at an angle of 40°-50°. The two titanium plate fixing wires (5) penetrate from the side wall of the braided body (2) toward the axis of the braided body (2) and then pass out parallel to the axis of the braided body (2).

7. An artificial braided ligament according to claim 1, characterized in that: At least two thickened areas (26) are provided on the braided area (22), and the thickened areas (26) are single-layer annular braided structures.

8. An artificial braided ligament according to claim 7, characterized in that: The width of the thickened area (26) is 1.2-5 mm, and the distance between two adjacent thickened areas (26) is between 5 mm and 10 mm.

9. An artificial braided ligament according to claim 2, characterized in that: The material of one of the weft threads (23) in each group is one of polytetrafluoroethylene, polyethylene, polycaprolactone, polylactic acid, and polyvinyl alcohol, and the material of the other weft thread (23) is titanium alloy.

Images