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 narrowing the particle size distribution

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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  • Diamond-ene artificial joint and production method thereof
  • Diamond-ene artificial joint and production method thereof
  • Diamond-ene artificial joint and production method thereof

Examples

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Effect test

Embodiment 1

[0024] Diamondene artificial joints, such as figure 1 As shown, it includes a joint head and a joint socket 3 that cooperate with each other. The joint head includes a metal substrate 1, and an ultrafine diamondene layer 2 is arranged on the outside of the metal substrate 1. The ultrafine diamondene layer 2 is composed of nanodiamondene; the joint socket 3 is composed of Nanodiamantene and polyethylene, wherein the volume ratio of nanodiamantene and polyethylene is 2:3; the surface roughness of the articular fossa 3 is 0.09 microns; nanodiamantene is a lamellar single crystal structure, and nanodiamantene is Carbon atoms in the same layer are connected by sp3 orbital hybrid carbon bonds between carbon atoms in the same layer, and carbon atoms between layers are connected by sp2 hybrid carbon bonds; the crystal lattice of nanodiamondene The spacing is 0.21nm; the average particle size of nano-diamantene is R, 20≤R≤500nm; the C content of nano-diamantene is 99-100%. The ultrafi...

Embodiment 2

[0029] The difference between this embodiment and Example 1 is that the volume ratio of nano-diamondene to polyethylene in the articular fossa is 2:3, the surface roughness of the articular fossa is 0.08 micron, and the thickness of the ultrafine diamondene layer in the articular head is 2. The average particle diameter R of the nanodiamondene in the ultrafine diamondene layer is 30nm.

Embodiment 3

[0031] 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 of the ultrafine diamondene layer in the joint head is 1.5 The average particle size R of the nanodiamondene in the ultrafine diamondene layer is 20nm.

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Abstract

The invention belongs to the technical field of artificial joints and particularly discloses a diamond-ene artificial joint. The 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 is made of nano diamond-ene and polyethylene, and the volume ratio of the nano diamond-ene to the polyethylene is 2:3 or 1:1. The surface roughness of the articular fossa is smaller than 0.1 micrometer. The 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, and relates to an artificial joint, in particular to a 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 joints,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/30A61L27/04A61L27/08A61L27/16
CPCA61L27/303A61L27/04A61L27/08A61L27/16A61L2400/18A61L2420/02A61L2430/24
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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