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Preparation process of soft-soft contact-type bionic joint

A technology of bionic joints and preparation technology, which is applied in the field of bionic joints, can solve the problems of aseptic wear and loosening of artificial joints, and achieve the effects of solving wear and aseptic loosening, reducing impact, and absorbing shocks

Active Publication Date: 2017-09-01
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a soft-soft contact bionic joint preparation process, through which an artificial joint similar in structure and function to the natural joint can be obtained to solve the problem of hard surface- Wear and aseptic loosening of hard surface contact artificial joints

Method used

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  • Preparation process of soft-soft contact-type bionic joint
  • Preparation process of soft-soft contact-type bionic joint
  • Preparation process of soft-soft contact-type bionic joint

Examples

Experimental program
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Effect test

Embodiment

[0036] The specific steps of a soft-soft contact bionic joint preparation process are as follows:

[0037] 1) According to the size of the artificial knee joint and the artificial hip joint, the medical polyethylene bar is processed into the artificial knee joint femoral condyle, the artificial knee joint tibia pad, the artificial hip joint femoral head, and the artificial hip joint acetabulum.

[0038] 2) Use acetone, ethanol and deionized water to thoroughly clean the medical polyethylene joint parts (artificial knee femoral condyle, artificial knee tibia pad, artificial hip femoral head, artificial hip acetabulum) in sequence; The medical polyethylene joint parts were soaked in dichromic acid oxidizing solution (potassium dichromate and concentrated sulfuric acid by mass percentage 1:4), and placed in a water bath at 75 ° C for 10 min, taken out and washed with a large amount of deionized water; then Treat the surface of medical polyethylene joint parts with oxygen ion beam...

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Abstract

The invention discloses a preparation process of a soft-soft contact-type bionic joint, and belongs to a preparation process of a bionic material. The preparation process comprises the following steps: 1) manufacturing an artificial knee femoral condyle, an artificial knee tibial liner, an artificial hip joint femoral head and an artificial hip joint acetabulum from medical polyethylene; 2) crosslinking the surface of a test sample with a PAMPS-PDMAAm composite hydrogel bionic cartilage material; 3) again crosslinking the test sample obtained in the step 2 with a PVA / HA-PAA composite hydrogel bionic cartilage material; and 4) again crosslinking the test sample obtained in the step 3 with a PVA hydrogel bionic cartilage material to finally obtain the soft-soft contact-type bionic joint. The bionic joint has a relatively low elastic modulus, high deformability, and excellent lubrication and wear resistance, can effectively reduce the impact, absorb the oscillation and reduce the impact and the wear during joint movement, and solves the problems of wear and aseptic loosening of an artificial joint.

Description

technical field [0001] The invention belongs to the technical field of bionic joints, in particular to a preparation process of a bionic joint, in particular to a preparation process of a soft-soft contact type bionic joint. Background technique [0002] The surface of the natural joints of the human body is covered with articular cartilage. In the normal physiological environment of the human body, the articular cartilage can provide an excellent lubricating and bearing joint surface, which can carry and transmit 7-9 times the weight of the human body, and the friction coefficient is extremely low, and it can move normally for 70 years. above. Due to the extremely limited self-repairing ability of natural cartilage, once injury or disease is caused, it is rarely able to heal itself. Generally, artificial joint replacement is used to rebuild joint function. Since the artificial joint replacement was widely used in clinic in the 1960s, it has become the most successful and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/40A61L27/16A61L27/12A61L27/50
CPCA61L27/12A61L27/16A61L27/50A61L2430/24C08L23/06C08L29/04C08L33/02C08L25/06C08L33/26
Inventor 陈凯张德坤杨雪晖许林敏王庆良葛世荣
Owner CHINA UNIV OF MINING & TECH
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