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Composite diamond-ene artificial joint and production method thereof

An artificial joint, diamond olefin technology, applied in pharmaceutical formulations, medical science, tissue regeneration, etc., can solve the problem of low hardness and wear resistance of ultra-high molecular weight polyethylene, shortening the service life of artificial joint implants, and poor soft tissue organisms. Chemical reaction and other problems to achieve the effect of improving lubricity, improving biocompatibility, and avoiding loosening

Inactive Publication Date: 2016-04-13
ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although artificial total joint replacement is one of the most effective and mature clinical operations at present, materials such as ultra-high molecular weight polyethylene have a service life, and they also face the risk of failure after being implanted in the human body. Large loads and relative reciprocating motions with hard materials such as alloys and ceramics are prone to cause many problems due to wear: the hardness and wear resistance of ultra-high molecular weight polyethylene are relatively low, and creep occurs during long-term use, causing replacement joints Larger wear occurs; wear debris accumulates and induces a series of adverse biological reactions in the soft tissue, which loosens the well-fixed artificial joint and greatly shortens the service life of the artificial joint implant

Method used

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  • Composite diamond-ene artificial joint and production method thereof
  • Composite diamond-ene artificial joint and production method thereof
  • Composite diamond-ene artificial joint and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Composite diamondene artificial joints, such as figure 1 As shown, it includes the joint head and the joint socket that cooperate with each other. The joint head includes a metal base 1, and an ultrafine diamondene layer 2 is arranged on the outside of the metal base 1. The ultrafine diamondene layer 2 is composed of nanodiamondene; the joint socket includes polyethylene The substrate 4 is provided with a wear-resistant layer 3 on the side where the polyethylene substrate 4 matches the joint head, and the wear-resistant layer 3 is composed of nanodiamondene and polyethylene, wherein the volume ratio of nanodiamondene and polyethylene is 2:3 or 1:1; the surface roughness of the articular fossa is 0.09 microns; nanodiamantene is a lamellar single crystal structure, and the carbon atoms in the same sheet of nanodiamantene are sp3 orbital impurities between the carbon atoms in the same sheet The carbon atoms between the layers are connected by sp2 hybrid carbon bonds; the l...

Embodiment 2

[0030] The difference between this embodiment and Example 1 is that the volume ratio of nanodiamondene and polyethylene in the articular fossa is 2:3, the surface roughness of the articular fossa is 0.08 microns, and the thickness ratio of the polyethylene matrix to the wear-resistant layer is 3 : 2; the thickness of the ultrafine diamondene layer in the joint head is 2.5 microns, and the average particle diameter R of the nanodiamondene in the ultrafine diamondene layer is 40nm.

Embodiment 3

[0032] The difference between this embodiment and Example 1 is that the volume ratio of nanodiamondene and polyethylene in the articular fossa is 1:1, the surface roughness of the articular fossa is 0.06 microns, and the thickness ratio of the polyethylene matrix to the wear-resistant layer is 7 : 3; the thickness of the ultrafine diamondene layer in the joint head is 2 microns, and the average particle diameter R of the nanodiamondene in the ultrafine diamondene layer is 30nm.

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Abstract

The invention belongs to the technical field of artificial joints and particularly discloses a composite diamond-ene artificial joint. The composite diamond-ene artificial joint comprises an articular head and an articular fossa which are matched with each other. The articular head comprises a metal matrix, and a superfine diamond-ene layer formed by nano diamond-ene is arranged outside the metal matrix. The articular fossa comprises a polyethylene matrix, one side, matched with the articular head, of the polyethylene matrix is provided with a wear-resistant layer which is formed by nano diamond-ene and polyethylene, and the volume ratio of the nano diamond-ene to the polyethylene is 2:3 or 1:1. The composite diamond-ene artificial joint is high in hardness, good in wear resistance and long in service life.

Description

technical field [0001] The invention belongs to the technical field of artificial joints, relates to an artificial joint, in particular to a composite diamondene diamondene artificial joint and a preparation method thereof. Background technique [0002] In order to treat joint ankylosis, joint deformity and various destructive bone and joint diseases, an artificial joint composed of ultra-high molecular weight polyethylene and cobalt-chromium alloy appeared in 1962, and it was fixed with bone cement (methacrylate) and applied to the human body. ; Since then, artificial joint replacement has entered a new stage of practical application. In the history of more than 50 years, artificial total joint replacement has developed into a method with the best curative effect in clinical treatment of severe joint injury and joint necrosis. According to reports, there are about 30 million people who need artificial joint replacement in my country. Due to the complex functions of human j...

Claims

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Application Information

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IPC IPC(8): A61L27/34A61L27/30A61L27/04A61L27/16
CPCA61L27/303A61L27/04A61L27/16A61L27/34A61L2400/18A61L2420/02A61L2420/06A61L2430/24
Inventor 郭留希赵清国杨晋中刘永奇薛胜辉陈庆丰尚跃增项嘉义
Owner ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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