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A bionic structural meniscus

A meniscus and bionic technology, applied in the field of implants, can solve the problems of lack of bionic structure meniscus, etc., and achieve the effect of easy fixation

Active Publication Date: 2022-08-09
茂名市人民医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a meniscus with a bionic structure to solve the problem that people lack a bionic structure meniscus

Method used

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  • A bionic structural meniscus
  • A bionic structural meniscus
  • A bionic structural meniscus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A biomimetic structure of the meniscus, such as attached figure 1 As shown in the figure, the meniscus is a half-moon-shaped structure, from outside to inside: regeneration layer 1, collagen layer 2, strengthening layer 3; regeneration layer 1 is a three-dimensional network porous structure with loose structure, with a pore size between 30-300um; collagen layer It is made of collagen and elastin material. According to the weight ratio, the amount of elastin material added is 15%-35% of the total amount. Its structure is a dense network structure with a pore size between 0.5-5um; It is made of collagen and elastin material. According to the weight ratio, the amount of elastin material is 15%-35% of the total amount, and the amount of carbon nanotubes is 0.1-1% of the total amount, and its structure is dense network. Structure, the aperture is between 0.5-5um.

[0040] A fixing device 4 is installed on the lower part of the outer side of the meniscus, as shown in the att...

Embodiment 2

[0043] This example is an improvement on Example 1. Microspheres 5 are added to the final 3D printed ink, and lubricating fluid is wrapped in the microspheres 5. Specifically, the microspheres 5 are added within a thickness of 3um on the surface of the meniscus, as shown in the appendix. image 3 shown.

Embodiment 3

[0045] In this embodiment, on the basis of Embodiment 1 or Embodiment 2, a layer of bag 6 is wrapped. The bag 6 includes a bag body 61 and a bag mouth 62. The bag body 61 is installed on the bag mouth 62, and the bag mouth 62 is stored and fixed. into the fixing device 4 for fixing, as shown in the appendix Figure 4 shown. The pocket 62 is a corrugated structure or a ring-shaped spring structure, such as the attached Figure 5 As shown, when the meniscus is inserted, the folds or springs in the pocket 62 are opened, and after insertion, the folds or springs return to the state, and the pocket 62 is fixed into the fixing device 4 at this time.

[0046] The bag body 61 is filled with 45%-75% volume of lubricating fluid. The upper surface of the bag body is a permeable membrane. When the bag body is squeezed beyond a certain pressure, the lubricating liquid seeps out to achieve lubrication.

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Abstract

The purpose of the present invention is to provide a meniscus with a bionic structure to solve the problem that people lack a meniscus with a bionic structure, a meniscus with a bionic structure, the meniscus is a meniscus structure, and the thickness of the meniscus gradually decreases from the outside to the inside Small, the meniscus is divided into three layers from the outside to the inside, the outer layer is the regeneration layer, the middle layer is the collagen layer, and the inner layer is the strengthening layer; the regeneration layer is a loose three-dimensional porous network structure with a pore size of 30 between ‑300um; the collagen layer and the reinforcement layer are dense network structures with a pore size between 0.5‑5um, and carbon nanotubes are added to the reinforcement layer.

Description

technical field [0001] The invention relates to the technical field of implants, in particular to a meniscus with a bionic structure. Background technique [0002] The structure and components of the meniscus are relatively complex. The meniscus is a meniscus-shaped fibrocartilage disc with a triangular cut surface. The outer surface is covered with a thin layer of fibrocartilage, and the inner part is dense collagen fibers mixed with a large number of elastic fibers. The inner edge of the meniscus is thin, dense, wear-resistant and impact-resistant. It is mainly composed of fibers and hyaline cartilage, and has a smooth surface; the outer edge of the meniscus is loose and elastic, suitable for blood vessel growth. The fibers are relatively thick, in order to facilitate the fixation of the meniscus in the joint capsule. [0003] Meniscus injury mostly occurs in sports people and degenerative injuries of the elderly. Once the injury occurs, it will greatly affect daily life,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/40A61L27/24A61L27/44A61L27/48A61L27/50A61L27/56A61F2/38A61F2/30
CPCA61L27/40A61L27/24A61L27/44A61L27/48A61L27/50A61L27/56A61F2/38A61F2/30
Inventor 吴小李黄金波邓信昌何荣
Owner 茂名市人民医院