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Artificial hip joint cuplike cotyle

A hip joint, artificial technology, applied in the hip joint, acetabular socket, joint implants, etc., can solve the problems of ceramic cup socket friction and wear noise, metal cup socket cytotoxicity, increase economic burden, etc., to achieve reduction Effects of small vibration and abnormal noise, improvement of surface contact stress state, and reduction of osteolysis

Inactive Publication Date: 2013-06-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical application, the friction and wear of artificial hip cups and sockets directly affects the clinical performance of artificial hip joints. For example, the wear of plastic cups and sockets will cause osteolysis around the joint and cause joint loosening; Cytotoxicity; the friction and wear of ceramic cups and sockets will produce harsh noises
In addition, due to the particularity of the implant, once the artificial hip joint is replaced, it will be embedded in the body. The friction and wear of the cup and socket can only be revised through a second operation, which brings great inconvenience and pain to the patient. further increased the economic burden

Method used

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  • Artificial hip joint cuplike cotyle
  • Artificial hip joint cuplike cotyle
  • Artificial hip joint cuplike cotyle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see Figure 1~4 , in this embodiment, an artificial hip joint cup is at least made of bioceramics or cobalt-chromium-molybdenum alloy biomaterials, forming a micro-texture array in the wearable area of ​​the inner ball friction surface of the artificial hip joint cup 1 Micro-texture arrays are distributed on the surface, that is, the edge area 2 of the inner ball surface and the bottom center area 3 of the inner ball surface of the artificial hip joint cup 1, forming a series of micro-storage container cluster structures for joint fluid or interstitial fluid. In this embodiment, the present invention will improve the traditional smooth inner surface artificial hip joint cup socket into a micro-textured surface, change the full contact interface between the artificial hip joint cup socket 1 and the artificial femoral ball into a limited contact interface, and improve some areas Contact surface stress distribution. The micro-textured series of micro-storage containers ar...

Embodiment 2

[0032] This embodiment is basically the same as Embodiment 1, especially in that:

[0033] In this example, see Figure 5 , forming a micro-texture array. The micro-pits 4 are spherical-shaped pits, which are easy to manufacture. Laser rapid prototyping, physical and chemical surface etching processes and other forming methods can also be used to produce surface micro-texture configurations.

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Abstract

The invention discloses an artificial hip joint cuplike cotyle which is at least made up of biological ceramics or vitallium alloy biological materials. The artificial hip joint cuplike cotyle is characterized in that microtexture array surfaces are formed on the area which can be abraded easily at the friction surface of an inner ball of the artificial hip joint cuplike cotyle, namely, a microtexture array is distributed on the edge area of the surface of the inner ball of the artificial hip joint cuplike cotyle and a microtexture array is distributed on the central area of the bottom of the surface of the inner ball of the artificial hip joint cuplike cotyle, so that a series of miniature storage container group structures for synovial fluid or interstitial fluid can be formed. The artificial hip joint cuplike cotyle has good lubrication performance and is capable of reducing the friction effect between a contact interface of the artificial hip joint cuplike cotyle and a contact interface of an artificial thighbone ball and reducing the occurrences of frictions, abrasions and vibrations.

Description

technical field [0001] The invention relates to a human body joint replacement, in particular to a wear-resistant and durable artificial hip joint component, which belongs to the orthopedic implant product series in the medical field. Background technique [0002] With the aging of the human body and the impact of various joint diseases or trauma on the joints of the human body, partial or complete damage to the joint movement is caused, resulting in inconvenient movement of the patient, and even complete failure of the joint function. For this problem, in modern medicine, artificial joint implants are mainly used to replace the defective human natural joints, which is clinically called artificial joint replacement. The replacement of artificial joints can not only reduce and eliminate the patient's pain, but also rebuild joint motion, help patients restore normal activity, and improve their quality of life. [0003] The hip joint is an important joint of the human body, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/34A61L27/10A61L27/04
CPCA61F2/30771A61F2002/30001
Inventor 华子恺
Owner SHANGHAI UNIV
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