Material combining porous ultrahigh molecular weight polyethylene and bionic cartilage and manufacturing technology

Abstract

The invention discloses a material combining porous ultrahigh molecular weight polyethylene and bionic cartilage and a manufacturing technology and belongs to biotic implanting materials and manufacturing technologies. The material comprises a dichromic acid oxidation solution, a biotic cartilage material, a grafting solution and a hard-face substrate. The dichromic acid oxidation solution comprises 20% of potassium dichromate and 80% of concentrated sulfuric acid. The biotic cartilage material comprises 15% of polyvinyl alcohol, 82% of deionized water and 3% of nano-hydroxyapatite. The grafting solution comprises 7% of polyvinyl alcohol, 1.5% of concentrated sulfuric acid and 91.5% of deionized water. The hard-face substrate comprises the ultrahigh molecular weight polyethylene and NaC1 powder. The purity of the polyvinyl alcohol is larger than or equal to 99%, the potassium dichromate is of an analytically pure level, the concentrated sulfuric acid is of a mass fraction 98% grade, and the matter is in mass percent. The material combining the porous ultrahigh molecular weight polyethylene and the bionic cartilage and the manufacturing technology have the advantages that on the basis of a human body natural articular bone-cartilage-bone pair matching manner, an artificial joint of the cartilage is manufactured in a bionic mode, the function of the cartilage is replaced to some extent, abrasion and loosening are not prone to happening, the interface lubricity is good, the biological activity is sufficient and the function of replacing the cartilage is truly achieved.

Description

technical field [0001] The invention relates to a bionic implant material and a preparation process, in particular to a material combined with porous ultra-high molecular weight polyethylene and bionic cartilage and a preparation process. Background technique [0002] In the human joint system, one of the important functions of articular cartilage is to provide an elastic cushion to effectively absorb energy, minimize the adverse effects of impact loads on bone ends, and distribute stress more evenly. At the same time, the inside of the articular cartilage contains a large amount of water. Under the action of cyclic load, the water in the cartilage can be continuously squeezed out and infiltrated, which can lubricate the joints and make the friction between the two adjacent articular surfaces and Wear is reduced to a minimum. Due to the extremely limited self-repair ability of articular cartilage in the body, once it is damaged or diseased, it seldom heals itself. At prese...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a material and a preparation process combining porous ultra-high molecular weight polyethylene with bionic cartilage, which uses in-situ chemical crosslinking to combine a bionic cartilage material layer on the surface of the artificial joint material to solve the problem of the bionic cartilage material and substrate. The problem of poor bonding performance between

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