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Film-coated diamondene artificial joint and preparation method thereof

A technology of artificial joints and diamondene, applied in joint implants, joint implants, pharmaceutical formulations, 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 , soft tissue adverse biological reactions and other issues, to achieve the effect of improving lubricity, improving biocompatibility, and controllable shape

Active Publication Date: 2017-06-13
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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  • Film-coated diamondene artificial joint and preparation method thereof
  • Film-coated diamondene artificial joint and preparation method thereof
  • Film-coated diamondene artificial joint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Film-coated 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 Substrate 3, the polyethylene substrate 3 is provided with ultrafine diamondene layer 2 on the side that matches the joint head; the ultrafine diamondene layer 2 is composed of nanodiamondene; the surface roughness of the articular fossa is 0.09 microns; nanodiamondene is Layer-like single crystal structure, carbon atoms in the same sheet of nanodiamantene are connected by sp3 orbital hybrid carbon bonds, and carbon atoms between layers are connected by sp2 hybrid carbon bonds; nanodiamantene The lattice spacing is 0.21nm; the average particle size of nano-diamantene is R, 20nm≤R≤500nm; the C content ...

Embodiment 2

[0030] The difference between this embodiment and Example 1 is that the thickness of the ultrafine diamondene layer is 8 microns, the average particle diameter of nanodiamondene in the joint head is 40nm, and the average particle diameter of nanodiamondene in the articular fossa is 300nm. The surface roughness of the dimples was 0.08 microns.

Embodiment 3

[0032]The difference between this embodiment and Example 1 is that the thickness of the ultrafine diamondene layer is 6 microns, the average particle diameter of nanodiamondene in the joint head is 30nm, and the average particle diameter of nanodiamondene in the articular fossa is 200nm. The surface roughness of the dimples was 0.06 microns.

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Abstract

The invention belongs to the technical field of artificial joints, and specifically discloses a film-coated diamondene artificial joint, which includes a joint head and a joint socket that cooperate with each other. The joint head includes a metal matrix, and an ultrafine diamondene layer is arranged outside the metal base body; It includes a polyethylene base body, and an ultrafine diamondene layer is arranged on the surface of the polyethylene base body matched with the joint head; the ultrafine diamondene layer is composed of nanometer diamondene. The invention has high hardness, good wear resistance and long 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 film-coated 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, es...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/30C23C30/00
CPCA61F2/30A61F2002/30003C23C30/00A61L27/16A61L27/303A61L27/422A61L27/50A61L2400/12A61L2420/04A61L2430/24C08L23/06
Inventor 郭留希赵清国杨晋中刘永奇薛胜辉陈庆丰
Owner ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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