Woven structure of artificial ligament

Abstract

The invention discloses a woven structure of an artificial ligament, which comprises a central traction line group, and is characterized in that a plurality of surrounding layers which are sequentially wrapped from inside to outside are woven on the outer surface of the traction line group, the surrounding layers are woven into a barrel shape, and each single surrounding layer consists of a joint part in the middle and bone tunnel parts on two sides; the artificial ligament comprises a joint part and bone tunnel parts, the bone tunnel parts are located on the two sides of the joint part, the outer sides of the bone tunnel parts on the surface are connected with ending parts, the bone tunnel parts are formed by weaving wire harnesses, and the ending parts are wound through the wire harnesses to be in a conical shape, and the artificial ligament solves the problems that an existing artificial ligament is low in strength and large in diameter; the surrounding layer is formed by warp and weft in a staggered winding mode, the strength is greatly improved, meanwhile, the diameters of the artificial ligament and the bone tunnel are reduced, and the rehabilitation time is shortened.

Description

Technical Field

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

[0002] The anterior cruciate ligament (ACL) is a crucial ligament structure within the knee joint. Anterior cruciate ligament (ACL) injuries are very common during sports and daily activities. Anterior cruciate ligament (ACL) injuries can reduce knee joint stability and severely affect its motor function.

[0003] Currently, artificial ligaments used clinically include LARS, Gore-Tex, and other artificial ligaments. The ligament diameter is generally 8.0 mm and the strength is 4000 N. A bone tunnel with a diameter of 7.5 mm is required. The large bone tunnel diameter requires a long recovery time, which affects the good regeneration of tissues. For example, patent 202411470487.X provides an artificial braided ligament and a braiding method, which discloses that a rectangular braided sheet 4 includes an upper edge-sealing structure 41, a lower edge-sealing structure 42, a left edge-sealing structure 43, and a right edge-sealing structure 44. Any two opposite sides of each rectangular braided sheet 4 are overlapped and sutured. In this embodiment, the left edge-sealing structure 43 and the right edge-sealing structure 44 are overlapped and fixed together by suture thread 5. That is, the existing artificial ligament is formed by curling and suturing the rectangular braided sheet. Therefore, in order to reduce the diameter of the artificial ligament and the bone tunnel during surgery, the braided structure of the artificial ligament is designed. Summary of the Invention

[0004] The purpose of the present invention is to provide a braided structure of an artificial ligament. By wrapping the outer surface of the traction wire group with multiple surrounding layers, the strength of the artificial ligament is greatly improved compared with the existing ligament formed by curling the braided sheet.

[0005] The present invention provides the following technical solution: the braided structure of the artificial ligament includes a central traction wire group, and the outer surface of the traction wire group is woven with multiple layers of surrounding layers wrapped sequentially from the inside to the outside, and the surrounding layers are woven into a cylindrical shape. The single layer of the surrounding layer is composed of a middle joint part and bone tunnel parts on both sides. The bone tunnel parts are located on both sides of the joint part, and the outer side of the bone tunnel part on the surface is connected to a tail part, and the bone tunnel part is woven by a wire bundle, and the tail part is tapered by winding the wire bundle.

[0006] In order to reduce friction between the joint portion of the artificial ligament and the internal tissue of the knee, the joint portion includes a plurality of parallel distributed meridians, and the plurality of meridians are distributed in a circumferential array on the outside of the traction line group.

[0007] The bone channel portion includes warp threads and weft threads, and the warp threads and weft threads are interwoven to form a shape.

[0008] In one embodiment, the longitude and latitude lines are arranged in a tic-tac-toe pattern.

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

[0010] The warp threads are odd in number and are wound together through a single weft thread. The weft thread is wound around the inner and outer sides of adjacent warp threads in sequence and then wound around the other side of the warp thread, so that the weft thread is wound around both sides of the warp thread.

[0011] The warp threads are in even number, two weft threads are wound around the warp threads, and the two weft threads are wound alternately on both sides of the warp threads.

[0012] In order to pull the artificial ligament, the traction line group includes at least one strand of wire bundle, and the warp and weft are also single strand wire bundles, and the single strand of the wire bundle is formed by twisting multiple fibers.

[0013] In order to ensure the mechanical properties of a single fiber and a single strand bundle, the diameter of a single fiber is 6-30 μm, and the diameter of a single strand bundle is 10-2000 tex.

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

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) A multi-layer wrapping layer is provided on the traction line assembly. The wrapping layer is formed by interlacing warp and weft threads. Compared with the existing artificial ligament formed by curling or sewing a woven sheet, the strength is higher and the diameter of the artificial ligament is reduced, further reducing the diameter requirement of the bone channel and shortening the recovery time;

[0017] (2) The diameter of the artificial ligament is controlled by the number of surrounding layers, which can meet the needs of artificial ligaments with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 is the braided structure of the artificial ligament of the present invention;

[0020] Figure 2 This is the braided structure of the artificial ligament of Example 2 of the present invention;

[0021] Figure 3 2. It is a schematic diagram of the winding structure of the even-numbered warp threads of the single-layer channel portion of the present invention;

[0022] Figure 4 2. It is a schematic diagram of the winding structure of the odd number of warps of the single-layer channel portion of the present invention;

[0023] Figure 5 This is a schematic structural diagram of the double-layer bone channel portion of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the joint portion of the present invention;

[0025] In the figure: 1, joint part; 2, bone channel part; 3, tail part; 4, traction line group; 5, surrounding layer; 51, warp; 52, weft. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] See also Figure 1 and Figure 3 The present invention provides a technical solution: a braided structure of an artificial ligament, including a central traction line group 4, a plurality of surrounding layers 5 are braided on the outer surface of the traction line group 4 and wrapped sequentially from the inside to the outside, the surrounding layers 5 are woven into a cylindrical shape, and the surrounding layers 5 are braided as a whole, with high strength. Compared with the existing artificial ligament formed by curling the woven sheet, the artificial ligament in this technical solution has high strength and small diameter. The single-layer surrounding layer 5 is composed of a middle joint part 1 and bone tunnel parts 2 on both sides. The bone tunnel part 2 is woven on both sides of the joint part 1, and the joint part 1 includes multiple parallel warp threads 51, such as Figure 6 As shown, multiple warps 51 are distributed in a circular array on the outside of the traction line group 4. The bone channel part 2 also includes warps 51 and wefts 52. The warps 51 and wefts 52 are interwoven and arranged in a crisscross pattern. The warps 51 and wefts 52 are distributed vertically. The wefts 52 are only distributed on the bone channel part 2. The wefts 52 are woven on the outer and inner surfaces of the warps 51. Figure 4 As shown in FIG, when the number of warps 51 is odd, the bone channel portion 2 is woven in a loop by sequentially wrapping the warps 51 with a single weft 52. The weft 52 first passes through the inner and outer sides of the adjacent warps 51 and circles around once, and then circles around the other side of the warp 51, so that both sides of the warp 51 are wrapped with weft 52. Figure 3 As shown, when the number of warps 52 is even, the bone channel part 2 is woven by two wefts 52, and the two wefts 52 are cross-wound on the warps 51. One weft 52 is wound around one side of the adjacent warp 51 in turn, and the other weft 52 is wound around the other side of the adjacent warp 51, so that both sides of the warp 51 are wound.

[0029] The traction line group 4 has at least one strand of wire bundle, which runs through the center of the artificial ligament. The artificial ligament is pulled and pulled by the traction line group 4 to locate the installation position of the artificial ligament. The warp 51 and the weft 52 are also single strands of wire bundles, which are formed by twisting multiple fibers.

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

[0031] The leader wire groups, warp and weft threads are blue, black, yellow or green.

[0032] The outer side of the bone channel portion 2 on the surface is connected to a tail portion 3 , and the bone channel portion 2 is woven from a wire harness. The tail portion 3 is formed into a cone shape by winding the wire harness and is wound around the traction wire group 4 as the center.

[0033] like Figure 5 As shown, preferably, the bone tunnel part 2 has two layers, and the diameter of the artificial ligament is determined by the number of bone tunnel parts 2. Different diameters are set with different layers of bone tunnel parts 2. The wire bundle diameter of the inner bone tunnel part 2 is small, and the wire bundle diameter of the outer bone tunnel part 2 is large.

[0034] Example 2

[0035] like Figure 2 As shown, the warp threads 51 and the weft threads 52 are both spirally distributed on the traction line group 4, so that the warp threads 51 and the weft threads 52 are both spirally distributed, thereby enhancing the strength of the artificial ligament.

[0036] In the above two embodiments, the diameter of the artificial ligament is 4-6 mm, 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 channel and further shortens the recovery time.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. The braided structure of the artificial ligament, including the central traction wire group, is characterized by: The outer surface of the traction line group is woven with multiple layers of surrounding layers that are wrapped sequentially from the inside to the outside. The surrounding layers are woven into a cylindrical shape. The single layer of the surrounding layer is composed of a joint part in the middle and bone tunnel parts on both sides. The bone tunnel parts are located on both sides of the joint part. The outer side of the bone tunnel part on the surface is connected with a tail part. The bone tunnel part is woven by a wire harness, and the tail part is tapered by winding the wire harness.

2. The braided structure of the artificial ligament according to claim 1, characterized in that: The joint portion includes a plurality of parallel distributed warps, which are distributed in a circular array outside the traction line group.

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

4. The braided structure of the artificial ligament according to claim 3, characterized in that: The longitudes and latitudes are distributed in a tic-tac-toe pattern.

5. The braided structure of the artificial ligament according to claim 3, characterized in that: The warp threads and the weft threads are spirally distributed on the traction line group.

6. The braided structure of the artificial ligament according to claim 3, characterized in that: The warp threads are odd in number and are wound together through a single weft thread. The weft thread is wound around the inner and outer sides of adjacent warp threads in sequence and then wound around the other side of the warp thread, so that the weft thread is wound around both sides of the warp thread.

7. The braided structure of an artificial ligament according to claim 3, characterized in that: The warp threads are in even number, two weft threads are wound around the warp threads, and the two weft threads are wound alternately on both sides of the warp threads.

8. The braided structure of an artificial ligament according to any one of claims 2 or 3, characterized in that: The traction line group includes at least one strand of wire bundle, and the warp and weft are also single strand wire bundles, and the single strand of the wire bundle is formed by twisting multiple fibers.

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

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