Articular head with carbon basement membrane

A technology of joint head and carbon-based membrane, which is used in medical science, prosthesis, coating, etc.

Active Publication Date: 2015-10-21
ZHONGAO HUICHENG TECH CO LTD
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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 solve the problems existing in the existing artificial metal joints, and provide a joint with a carbon-based film, which has high hardness, good biocompatibility, high film-base bonding strength and super wear resistance

Method used

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  • Articular head with carbon basement membrane
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Examples

Experimental program
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Effect test

Embodiment 1

[0031]In Example 1, the carbon-based film prepared on the metal joint substrate of Ti6Al4V by sputtering process was observed through a scanning electron microscope, and it was found that the carbon-based film had an obvious three-layer structure, which were tantalum-titanium multilayer layer, tantalum-titanium-carbon transition layer and tantalum-carbon multilayer, the thicknesses are 220nm, 400nm, 1400nm respectively, and the total film thickness is about 2220nm. Observing its cross-section by transmission electron microscope, it is found that in the tantalum-titanium multilayer, the thickness of the tantalum single layer and the titanium single layer are about 6nm, in the tantalum-carbon multilayer, the thickness of the tantalum-carbon composite single layer is about 5nm, and the carbon The thickness of the single layer is about 6nm. According to the analysis of energy dispersive X-ray spectrometer (EDX) and high-resolution transmission electron microscope (HRTEM), the tant...

Embodiment 2

[0033] In Example 2, the carbon-based film prepared on the metal joint substrate of Ti6Al4V by sputtering process was observed through a scanning electron microscope, and it was found that the carbon-based film had an obvious three-layer structure, which was tantalum-titanium multilayer layer, tantalum-titanium-carbon transition layer and tantalum-carbon multilayer, the thicknesses are 220nm, 420nm, 1500nm respectively, and the total film thickness is about 2140nm. Observing its cross-section by transmission electron microscope, it is found that in the tantalum-titanium multilayer, the thickness of the tantalum single layer and the titanium single layer are about 6nm, in the tantalum-carbon multilayer, the thickness of the tantalum-carbon composite single layer is about 6nm, and The thickness of the single layer is about 6nm. According to the analysis of energy dispersive X-ray spectrometer (EDX) and high-resolution transmission electron microscope (HRTEM), the tantalum-carbon...

Embodiment 3

[0035] In Example 3, a carbon-based film was prepared on the metal joint head of CoCrMo by a sputtering process, and its cross-section was observed through a scanning electron microscope, and it was found that the carbon-based film had an obvious three-layer structure, which were respectively tantalum-titanium multilayer, The thicknesses of the tantalum-titanium-carbon transition layer and the tantalum-carbon multilayer are 230nm, 390nm, and 1550nm respectively, and the total thickness of the film is about 2170nm. Observing its cross-section by transmission electron microscope, it is found that in the tantalum-titanium multilayer, the thickness of the tantalum single layer and the titanium single layer are about 7nm, and in the tantalum-carbon multilayer, the thickness of the tantalum-carbon composite single layer is about 6.5nm, The thickness of the carbon monolayer is about 6nm. According to the analysis of energy dispersive X-ray spectrometer (EDX) and high-resolution trans...

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Abstract

The invention discloses an articular head with a carbon basement membrane, comprising a metal articular head basal body and the carbon basement membrane arranged at the surface of the metal articular head basal body; the carbon basement membrane sequentially consists of a tantalum-titanium multilayered bottom layer, a tantalum-titanium-carbon transition layer and a tantalum-carbon multilayered top layer from bottom to top; the tantalum-titanium multilayered bottom layer is a lamination layer with alternated tantalum monolayer and titanium monolayer; tantalum-carbon multilayered top layer is a lamination layer with alternated tantalum-titanium composite monolayer and amorphous carbon monolayer; the tantalum-titanium composite monolayer consists of an amorphous carbon basal body and tantalum carbide crystal grains, in the tantalum-titanium composite monolayer, atomic percent of tantalum is 20-40at%, the atomic percent of carbon is 60-80at% and crystal grain size of the tantalum carbide is 2-6nm. The metal articular head with the carbon basement membrane has the characteristics of high biocompatibility, high carrying capacity, high anticorrosion and high wear resistance, the service life of the metal articular head is prolonged and biocompatibility thereof is improved.

Description

technical field [0001] The invention relates to the surface modification technology of a metal joint head, in particular to a joint head with a carbon base film. Background technique [0002] As an effective method for treating joint diseases, artificial hip replacement has become a common method for treating joint injuries after more than a century of development. More than 500,000 patients worldwide receive hip replacement every year. At present, the commonly used artificial hip joints are metal-to-polyethylene, metal-to-metal and ceramic-to-ceramic hip joint prosthesis. Ceramics have excellent wear resistance for ceramic hip joint prostheses. However, since ceramics are hard and brittle materials, the problem of their fragmentation has always been a concern. In addition, the problem of postoperative abnormal noise has not been solved yet. Metal-to-polyethylene hip joint prosthesis is the most widely used artificial hip joint in the past 40 years. Metal-to-metal hip joint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/42A61L27/30A61L27/06A61L27/04A61L27/50
Inventor 涂江平白文琦王秀丽贺凤飞李玲玲谢跃军金攻
Owner ZHONGAO HUICHENG TECH CO LTD
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