The woven structure of artificial ligaments

Abstract

This utility model discloses a braided structure for artificial ligaments, including a central traction thread group. The key feature is that the outer surface of the traction thread group is woven with multiple layers that wrap sequentially from the inside out. Each layer is cylindrical, and each layer consists of a central joint portion and two side bone tunnel portions. The bone tunnel portions are located on both sides of the joint portion, and a tail portion is connected to the outer side of each bone tunnel portion on the surface. The bone tunnel portions are woven from thread bundles, and the tail portions are formed into a cone shape by winding the thread bundles. This utility model solves the problems of low strength and large diameter in existing artificial ligaments. By incorporating multiple layers of traction thread group, formed by interlacing warp and weft threads, the strength is significantly improved, while simultaneously reducing the diameter of the artificial ligament and bone tunnels, thus shortening the rehabilitation time.

Description

Technical Field

[0001] This utility model relates to the field of artificial ligament technology, specifically to the woven structure of artificial ligaments. Background Technology

[0002] The anterior cruciate ligament (ACL) is an important ligament structure within the knee joint, and ACL injuries are very common in sports and daily activities. ACL injuries reduce knee joint stability and severely affect its motor function.

[0003] Currently, the artificial ligaments used clinically are LARS, Gore-Tex, etc., with a typical diameter of 8.0 mm and a strength of 4000 N. These require creating a 7.5 mm diameter bone tunnel. A large bone tunnel diameter leads to a longer recovery time and hinders proper tissue regeneration. For example, patent 202411470487.X discloses an artificially woven ligament and its weaving method. The rectangular woven piece 4 includes an upper sealing structure 41, a lower sealing structure 42, a left sealing structure 43, and a right sealing structure 44. Any two opposite sides of each rectangular woven piece 4 are overlapped and sutured. In this embodiment, the left sealing structure 43 and the right sealing structure 44 are overlapped and sutured together with sutures 5. That is, existing artificial ligaments are formed by curling and suturing rectangular woven pieces. Therefore, to reduce the diameter of the artificial ligament and the bone tunnel during surgery, this woven structure of the artificial ligament was designed. Utility Model Content

[0004] The purpose of this invention is to provide a braided structure for artificial ligaments. By wrapping multiple layers around the outer surface of the traction wire assembly, the strength of the artificial ligament is significantly improved compared to existing braided ligaments formed by curling.

[0005] This utility model provides the following technical solution: a braided structure for artificial ligaments, including a central traction thread group, the outer surface of which is woven with multiple layers of wrapping layers that are sequentially wrapped from the inside out. The wrapping layers are woven into a cylindrical shape. Each wrapping layer consists of a central joint portion and two side bone tunnel portions. The bone tunnel portions are located on both sides of the joint portion. A tail portion is connected to the outer side of the bone tunnel portion on the surface. The bone tunnel portion is woven from a wire bundle. The tail portion is wound into a cone shape by the wire bundle.

[0006] To reduce friction between the joint portion of the artificial ligament and the internal tissues of the knee, the joint portion includes multiple parallel meridians arranged in a circumferential array on the outer side of the traction line group.

[0007] The bone passage includes warp and weft threads, which are interwoven to form a shape.

[0008] In one embodiment, the meridians and parallels are arranged in a tic-tac-toe pattern.

[0009] In another embodiment, both the warp and weft threads are spirally distributed on the traction line group.

[0010] The number of meridians is odd. The meridians are wrapped together by a single latitude thread. The latitude thread wraps around the inner and outer sides of the adjacent meridians in sequence, and then wraps around the other side of the meridian, so that both sides of the meridian are wrapped with latitude threads.

[0011] The number of warp threads is even, and two weft threads are wrapped around the warp threads, with the two weft threads interlaced and wrapped around both sides of the warp threads.

[0012] For traction of artificial ligaments, the traction thread assembly includes at least one strand, and the warp and weft threads are also single strands, each strand being formed by twisting multiple fibers together.

[0013] To ensure the mechanical properties of individual fibers and single strands, the diameter of a single fiber is 6-30 μm, and the diameter of a single strand is 10-2000 tex.

[0014] The traction line group, warp and weft are blue, black, yellow or green.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] (1) Multiple layers of wrapping are provided on the traction line group. The wrapping layer is formed by interlacing warp and weft threads. Compared with the existing artificial ligaments that are woven or sewn, the strength is higher and the diameter of the artificial ligament is reduced, which further reduces the diameter requirement of the bone tunnel and shortens the rehabilitation time.

[0017] (2) The diameter of the artificial ligament can be controlled by the number of surrounding layers, which can meet the needs of artificial ligaments of different diameters. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is the woven structure of the artificial ligament of this utility model;

[0020] Figure 2 This is the woven structure of the artificial ligament in Embodiment 2 of this utility model;

[0021] Figure 3 This is a schematic diagram of the double-number warp winding structure of the single-layer bone passage section of this utility model;

[0022] Figure 4 This is a schematic diagram of the winding structure of the odd number of warp threads in the single-layer bone passage section of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the double-layered bone channel of this utility model;

[0024] Figure 6 This is a schematic diagram of the joint portion of this utility model;

[0025] In the diagram: 1. Joint; 2. Bone tunnel; 3. Tail section; 4. Traction line group; 5. Encircling layer; 51. Meridian; 52. Latitude. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figure 1 and Figure 3 This utility model provides a technical solution: a woven structure for an artificial ligament, including a central traction thread group 4. Multiple layers 5, arranged sequentially from the inside out, are woven on the outer surface of the traction thread group 4. The woven layers 5 are cylindrical and integrally woven, resulting in high strength. Compared to existing woven sheet-rolled artificial ligaments, the artificial ligament in this technical solution has higher strength and smaller diameter. Each single-layer woven layer 5 consists of a central joint portion 1 and two side bone tunnel portions 2. The bone tunnel portions 2 are woven on both sides of the joint portion 1. The joint portion 1 includes multiple parallel warp threads 51, such as... Figure 6 As shown, multiple warp threads 51 are arranged in a circular array on the outside of the traction thread group 4. The bone passage section 2 also includes warp threads 51 and weft threads 52, which are interwoven to form a crisscross pattern. The warp threads 51 and weft threads 52 are arranged perpendicularly, and the weft threads 52 are only distributed on the bone passage section 2. The weft threads 52 are woven onto the outer and inner surfaces of the warp threads 51, as shown. Figure 4 As shown, when the number of warp threads 51 is odd, the bone channel section 2 weaves the warp threads 51 sequentially with a single weft thread 52, repeating the weft thread 52. The weft thread 52 first passes through the inner and outer sides of the adjacent warp threads 51 and wraps around them once, then wraps around the other side of the warp thread 51, so that both sides of the warp thread 51 are wrapped with weft threads 52; as shown Figure 3As shown, when the number of warp threads 52 is even, the bone channel section 2 is woven by two weft threads 52. The two weft threads 52 are interlaced and wrapped around the warp thread 51. One weft thread 52 wraps around one side of the adjacent warp thread 51 in sequence, and the other weft thread 52 wraps around the other side of the adjacent warp thread 51, so that both sides of the warp thread 51 are wrapped.

[0029] The traction thread group 4 has at least one strand of thread that runs through the center of the artificial ligament. The traction thread group 4 is used to pull and stretch the artificial ligament and to position the artificial ligament in place. The warp thread 51 and the weft thread 52 are also single strands of thread, which are formed by twisting multiple fibers together.

[0030] The diameter of a single fiber is 6-30μm, and the single strand is 10-2000tex, which enhances the mechanical properties of the fiber and the strand.

[0031] The traction lines, warp and weft are blue, black, yellow or green.

[0032] The outer side of the bone channel 2 on the surface is connected to the tail section 3. The bone channel 2 is woven from a wire bundle. The tail section 3 is wound into a cone shape by the wire bundle and is wound around the traction wire group 4.

[0033] like Figure 5 As shown, preferably, the bone tunnel 2 has two layers. The diameter of the artificial ligament is determined by the number of bone tunnels 2. Different diameters are fitted with different numbers of bone tunnels 2. The inner bone tunnel 2 has a smaller wire bundle diameter, while the outer bone tunnel 2 has a larger wire bundle diameter.

[0034] Example 2

[0035] like Figure 2 As shown, both the longitude line 51 and the latitude line 52 are spirally distributed on the traction line group 4, which enhances the strength of the artificial ligament.

[0036] In both of the above embodiments, the diameter of the artificial ligament is 4-6mm, and the strength can reach 6000N. While reducing the diameter, the strength is further enhanced, and the strength is increased by 30%, which reduces the diameter requirement of the bone tunnel and further shortens the rehabilitation time.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A braided structure for an artificial ligament, comprising a central traction suture group, characterized in that: The outer surface of the traction wire assembly is woven with multiple layers of wrapping from the inside out. The wrapping layers are woven into a cylindrical shape. Each wrapping layer consists of a joint in the middle and bone channels on both sides. The bone channels are located on both sides of the joint. A tail section is connected to the outer side of the bone channel on the surface. The bone channel is woven from a wire bundle. The tail section is wound into a cone shape by the wire bundle.

2. The woven structure of the artificial ligament according to claim 1, characterized in that: The joint includes multiple parallel warp threads arranged in a circular array on the outside of the traction thread group.

3. The woven structure of the artificial ligament according to claim 1, characterized in that: The bone passage includes warp and weft threads, which are interwoven to form a shape.

4. The woven structure of the artificial ligament according to claim 3, characterized in that: The meridians and parallels are arranged in a grid pattern.

5. The woven structure of the artificial ligament according to claim 3, characterized in that: Both the longitude and latitude lines are spirally distributed on the traction line group.

6. The woven structure of the artificial ligament according to claim 3, characterized in that: The number of meridians is odd. The meridians are wrapped together by a single latitude thread. The latitude thread wraps around the inner and outer sides of the adjacent meridians in sequence, and then wraps around the other side of the meridian, so that both sides of the meridian are wrapped with latitude threads.

7. The woven structure of the artificial ligament according to claim 3, characterized in that: The number of warp threads is even, and two weft threads are wrapped around the warp threads, with the two weft threads interlaced and wrapped around both sides of the warp threads.

8. The woven structure of the artificial ligament according to any one of claims 2 or 3, characterized in that: The traction thread assembly includes at least one strand of thread, and the warp and weft threads are also single strands of thread, each strand of which is formed by twisting multiple fibers together.

9. The woven structure of the artificial ligament according to claim 8, characterized in that: The diameter of a single fiber is 6-30 μm, and the diameter of a single strand is 10-2000 tex.

10. The woven structure of the artificial ligament according to claim 8, characterized in that: The traction line group, warp and weft are blue, black, yellow or green.

Images