Artificial ligament braided fabric

Abstract

The invention relates to the technical field of medical instruments, in particular to an artificial ligament braided fabric. The artificial ligament braided fabric comprises a braided part, the braided part is formed by interweaving warp yarns and weft yarns, a mesh staggered structure is formed, the warp yarns extend in the width direction of the braided part, and the weft yarns extend in the length direction of the braided part. Compared with the prior art, by optimizing the weaving structure and the size design, the complex movement requirements of various joint parts such as the ankle joint and the acromioclavicular joint can be met, the stable fixing effect is provided, and the risks of loosening and shifting of the graft are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an artificial ligament braid. Background Art

[0002] Reconstructive grafts can be divided into autologous ligament grafts, allogeneic ligament grafts, and artificial ligament grafts based on their source. However, both autologous and allogeneic tissue undergo a postoperative reshaping process, so strenuous activities should be avoided for a long period of time. Artificial ligament grafts were developed to overcome the shortcomings of the aforementioned autologous and allogeneic grafts. They can effectively avoid the problem of insufficient strength of autologous or allogeneic ligaments. More importantly, the high strength of artificial ligament grafts allows patients to quickly resume normal activities and engage in normal exercise and life.

[0003] However, existing artificial ligament braids are primarily designed for knee applications. Their structures struggle to adapt to the complex movements of the ankle and acromioclavicular joints, leading to insufficient fixation stability, limited space for cell growth, and long-term mechanical performance degradation. Therefore, developing artificial ligament braids suitable for multiple joint types, with excellent biocompatibility and mechanical adaptability, has become a pressing technical challenge. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an artificial ligament braid for treating ligament injuries of the ankle joint, acromioclavicular joint and other parts.

[0005] To achieve the above purpose, an artificial ligament braid is designed, which includes a braided portion, which is woven by interlacing warp yarns and weft yarns to form a mesh interlaced structure. The warp yarns extend along the width direction of the braided portion, and the weft yarns extend along the length direction of the braided portion.

[0006] The meshes are arranged continuously or discontinuously.

[0007] The mesh size is 0.5 mm to 2 mm, and the sizes of adjacent meshes vary periodically or irregularly.

[0008] The length of the braided portion is 300 mm to 600 mm, the width is 40 mm to 100 mm, and the thickness is 0.2 mm to 1 mm.

[0009] At least one end of the braided portion is provided with a traction line for fixing the artificial ligament braid on the medullary canal, and the length of the traction line is 30 cm to 40 cm.

[0010] The materials of the warp and weft yarns are selected from polymer materials or polymer composite materials, wherein the polymer material includes one of polyethylene terephthalate, polyethylene, polytetrafluoroethylene, polyurethane, polycaprolactone, polylactic acid, polyglycolic acid, polyetheretherketone, polyetherketoneketone, or a mixture or copolymer thereof.

[0011] The woven part uses warp yarns and weft yarns of different weaving structures arranged alternately.

[0012] The two sides of the braided portion are folded in half and sewn together to form a hollow cylindrical artificial ligament braid. The width of the braided portion is 50 mm to 200 mm.

[0013] The number of the woven parts is 2 or more, and adjacent woven parts are connected by free fiber parts, which are woven by weft yarns.

[0014] The artificial ligament braid comprises a plurality of braided parts arranged in upper and lower layers, and the braided parts in adjacent upper and lower layers are fixedly connected by yarns.

[0015] Compared with the existing technology, the present invention can meet the complex movement requirements of various joints such as the ankle joint and the acromioclavicular joint by optimizing the braiding structure and size design, provide a stable fixation effect, and reduce the risk of graft loosening and displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of embodiment 1 of the present invention.

[0017] Figure 2 This is a yarn inlay motion diagram of a weaving method in Example 1 of the present invention.

[0018] Figure 3 This is a schematic structural diagram of a single-side traction line in the second embodiment of the present invention.

[0019] Figure 4 This is a schematic structural diagram of the double-sided traction lines in the second embodiment of the present invention.

[0020] Figure 5 This is a structural diagram of embodiment 3 of the present invention.

[0021] Figure 6 This is a structural diagram of embodiment 4 of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings. Example 1

[0023] like Figure 1As shown, the artificial ligament fabric of this embodiment includes a woven portion 1-1, which is woven by interlacing warp yarns and weft yarns to form a mesh interlaced structure. The warp yarns extend along the width direction of the woven portion 1-1, and the weft yarns extend along the length direction of the woven portion 1-1.

[0024] During use, the mesh provides sufficient growth space for cells, allowing for gas exchange, nutrient transport, and metabolic processes necessary for cell growth. The mesh can be arranged continuously or discontinuously. The mesh size ranges from 0.5 mm to 2 mm, with the sizes of adjacent meshes varying periodically or irregularly.

[0025] The length of the braided portion 1-1 is 300mm to 600mm, the width is 40mm to 100mm, and the thickness is 0.2mm to 1mm. When used, different sizes can be selected according to the specific application parts of the braided fabric.

[0026] The materials of the warp and weft yarns are polymer materials or polymer composite materials, wherein the polymer materials include one of polyethylene terephthalate, polyethylene, polytetrafluoroethylene, polyurethane, polycaprolactone, polylactic acid, polyglycolic acid, polyetheretherketone, polyetherketoneketone, or a mixture or copolymer thereof.

[0027] The weaving part 1-1 uses warp yarns and weft yarns of different weaving structures arranged alternately. Figure 2 As shown, in this embodiment, the weaving form of the warp yarns is a chain weave structure 2-2 and a variable warp diagonal structure 2-3, which are fully threaded or empty threaded according to the position of the free silk threads required for weaving; the weft yarns are woven in a full-width weft insert structure 2-1, and the weft yarns are selected according to the minimum weaving unit. Example 2

[0028] In this embodiment, at least one end of the braided portion 1-1 is provided with a traction line 1-2 for fixing the artificial ligament braid on the medullary canal.

[0029] The traction line 1-2 can be fixed by winding with silk thread, wrapping with a film, or heat fusion. The traction line 1-2 is made of the same or different biocompatible material as the braided portion 1-1 to ensure that it has sufficient strength and stability to smoothly pull and fix the artificial ligament braid to the predetermined position during surgery.

[0030] When used specifically, the length of the traction line 1-2 is 30cm to 40cm. Figure 3 As shown, the traction line 1-2 can be set on one side of the braided portion 1-1, and the width of the braided portion 1-1 is 3mm to 6mm. Figure 4 As shown, the traction line 1-2 can also be set on both sides of the braided portion 1-1. In this case, the width of the braided portion 1-1 is 6mm to 10mm.

[0031] In this embodiment, the braided portion 1-1 is the same as the braided portion 1-1 in the first embodiment. Example 3

[0032] This embodiment is improved on the basis of the first or second embodiment, and only the differences from the first and second embodiments are described.

[0033] The difference between this embodiment and the first and second embodiments is that Figure 5 As shown, in this embodiment, the two sides of the braided portion 1-1 are folded in half and sewn together to form a hollow cylindrical artificial ligament braid. The width of the braided portion 1-1 is 50 mm to 200 mm.

[0034] During use, the two sides of the braided portion 1-1 are folded in half, sewn together, and then cleaned and shaped. The hollow cylindrical structure can better adapt to the anatomical morphology and movement patterns of different joints, improving the fit and coordination between the braided fabric and surrounding tissues. Example 4

[0035] This embodiment is improved on the basis of the first embodiment, the second embodiment, or the third embodiment, and only the differences from the first, second, and third embodiments are described.

[0036] The difference between this embodiment and the first, second and third embodiments is that Figure 6 As shown, the number of woven portions 1-1 is 2 or more, and adjacent woven portions 1-1 are connected by free fiber portions 1-3, which are woven by weft yarns. Example 5

[0037] This embodiment is improved on the basis of the first embodiment, the second embodiment, the third embodiment, or the fourth embodiment, and only the differences from the first, second, third, and fourth embodiments are described.

[0038] The difference between this embodiment and embodiments 1, 2, 3 and 4 is that the artificial ligament braid includes a plurality of braided portions 1-1 arranged in upper and lower layers, and the braided portions 1-1 in adjacent upper and lower layers are fixedly connected by yarns.

[0039] The artificial ligament braid of this embodiment is not limited to a single-layer braided structure; it also includes a multi-layered, interwoven structure. This multi-layered structure can enhance the thickness and mechanical strength of the braid. Furthermore, the interlaced mesh structures of each braided portion 1-1 can interact with each other to form more complex channels, facilitating cell migration and tissue regeneration.

Claims

1. An artificial ligament braid, characterized in that: The artificial ligament braid comprises a braided portion (1-1), wherein the braided portion (1-1) is formed by interlacing warp yarns and weft yarns to form a mesh interlaced structure, wherein the warp yarns extend along the width direction of the braided portion (1-1), and the weft yarns extend along the length direction of the braided portion (1-1).

2. The artificial ligament braid according to claim 1, characterized in that: The meshes are arranged continuously or discontinuously.

3. An artificial ligament braid according to claim 1 or 2, characterized in that: The mesh size is 0.5 mm to 2 mm, and the sizes of adjacent meshes vary periodically or irregularly.

4. The artificial ligament braid according to claim 1, characterized in that: The braided portion (1-1) has a length of 300 mm to 600 mm, a width of 40 mm to 100 mm, and a thickness of 0.2 mm to 1 mm.

5. The artificial ligament braid according to claim 1, characterized in that: The materials of the warp and weft yarns are selected from polymer materials or polymer composite materials, wherein the polymer material includes one of polyethylene terephthalate, polyethylene, polytetrafluoroethylene, polyurethane, polycaprolactone, polylactic acid, polyglycolic acid, polyetheretherketone, polyetherketoneketone, or a mixture or copolymer thereof.

6. The artificial ligament braid according to claim 1 or 5, characterized in that: The woven portion (1-1) is constructed by alternatingly arranging warp yarns and weft yarns of different weaving structures.

7. The artificial ligament braid according to claim 1, characterized in that: At least one end of the braided portion (1-1) is provided with a traction line (1-2) for fixing the artificial ligament braid on the medullary canal, and the length of the traction line (1-2) is 30 cm to 40 cm.

8. The artificial ligament braid according to claim 1 or 7, characterized in that: The two sides of the braided portion (1-1) are folded in half and sewn together to form a hollow cylindrical artificial ligament braid. The width of the braided portion (1-1) is 50 mm to 200 mm.

9. The artificial ligament braid according to claim 1 or 7, characterized in that: The number of the woven parts (1-1) is 2 or more, adjacent woven parts (1-1) are connected by free fiber parts (1-3), and the free fiber parts (1-3) are woven by weft yarns.

10. The artificial ligament braid according to claim 1 or 7, characterized in that: The artificial ligament braid comprises a plurality of braided portions (1-1) arranged in upper and lower layers, and the braided portions (1-1) in adjacent upper and lower layers are fixedly connected by yarns.

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