Method for preparing low-friction and high-hardness artificial hip joint ball head by surface patterning

A hip, low-friction technology, used in hip joints, joint implants, joint implants, etc., can solve the problems affecting the anti-wear ability of artificial joints and the internal stress of materials, reducing the real contact area, Shape and quality more, precise and controllable effects of shape and quality

Active Publication Date: 2017-12-19
CHANGCHUN UNIV OF SCI & TECH
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  • Description
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AI Technical Summary

Problems solved by technology

At the same time, the difference in thermal expansion coefficient between the coating and the substrate will lead to internal stress in the material, which will affect the wear resistance of the artificial joint

Method used

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  • Method for preparing low-friction and high-hardness artificial hip joint ball head by surface patterning
  • Method for preparing low-friction and high-hardness artificial hip joint ball head by surface patterning
  • Method for preparing low-friction and high-hardness artificial hip joint ball head by surface patterning

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Experimental program
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Embodiment Construction

[0031] figure 1 As shown, the present invention is realized as:

[0032] Forming a patterned dimple array on the surface of the artificial hip joint ball, that is, preparing a patterned dimple array on the friction surface of the artificial hip joint ball by laser interference lithography, including the following steps:

[0033] a. Ultrasonic cleaning of the hip joint;

[0034] b. Establish a three-beam laser interference optical system to etch samples;

[0035] c. Change the three-beam interference parameters to obtain a periodic lattice structure with adjustable structural period from nanometer to micrometer and controllable depth;

[0036] d. Optimize the interference light intensity and exposure time parameters of the three-beam interference system to obtain a low-friction, high-hardness artificial hip joint ball head.

[0037] Such as figure 2 As shown, it is a model diagram of the artificial hip joint ball head prepared by the present invention; the artificial hip j...

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Abstract

The invention relates to a method for preparing a low-friction and high-hardness artificial hip joint ball head by surface patterning. The method is made of cobalt-chromium-molybdenum alloy material, and is characterized in that a patterned dimple array is formed on the surface of the artificial hip joint ball head, that is, a patterned dimple array is formed on the artificial hip joint ball head. The friction surface of the joint ball head is prepared with a patterned dimple array by laser interference lithography, forming a small temporary storage for joint fluid or tissue fluid, and at the same time reducing the real contact area between the friction pairs, accommodating the abrasive particles generated during the friction process, and reducing the purpose of friction. The instantaneous high temperature of the laser refines the grains, increases the hardness of the material, and obtains an artificial hip joint with low friction and high hardness. The artificial hip joint ball head of the invention has good lubricating performance, can reduce the friction effect between the artificial hip joint friction pair interfaces and reduce the friction. At the same time, the hardness is enhanced, the wear is reduced, and the friction and wear properties of the existing artificial hip joint ball are optimized.

Description

technical field [0001] The invention relates to a method for preparing a low-friction and high-hardness artificial hip joint ball head by surface patterning, which belongs to the improvement of the performance of the existing artificial hip joint. Background technique [0002] Artificial joint replacement is currently the most effective method for the treatment of end-stage joint diseases, which can significantly improve the motor function and quality of life of patients. Due to the continued aging of the population and the significant increase in human lifespan, there is an urgent need to develop long-lived artificial joints. Therefore, the key issue that needs to be solved at present is whether to provide high-quality, low-cost, long-life, biocompatible artificial joints for hundreds of millions of patients with osteoarthritis worldwide. [0003] Artificial joint technology involves the intersection of various disciplines such as material science, biotribology and medical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/32
Inventor 王作斌魏晓凤李文君梁铂坚付跃刚李冰琳宋正勋翁占坤董莉彤
Owner CHANGCHUN UNIV OF SCI & TECH
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