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A kind of artificial joint with self-healing textured composite film structure and its preparation method

A composite thin film and artificial joint technology, which can be used in joint implants, joint implants, metal processing equipment, etc., can solve the problems of carbon fiber and nano-particles

Active Publication Date: 2022-03-08
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, the methods to improve the wear resistance of radiation-crosslinked UHMWPE joint cups mainly include carbon brazing fiber and filler nano-particle reinforcement modification; the main method to improve the wear resistance of ceramic joint head is also filler nano-particle reinforcement modification, however While these methods improve wear resistance, the filling of carbon fibers and nanoparticles has not yet been evaluated for biocompatibility and medical clinical aspects.

Method used

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  • A kind of artificial joint with self-healing textured composite film structure and its preparation method
  • A kind of artificial joint with self-healing textured composite film structure and its preparation method
  • A kind of artificial joint with self-healing textured composite film structure and its preparation method

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Embodiment

[0032] A method for preparing an artificial joint with a self-repairing textured composite film structure, which is carried out sequentially according to the following steps:

[0033](1) Grind and polish the radiation-crosslinked ultra-high molecular weight polyethylene joint acetabular cup on a polishing machine to a roughness Ra<0.2 μm, and ultrasonically clean them in absolute ethanol and deionized water for 30 min, and blow dry with dry nitrogen, Obtain a smooth inner surface of the acetabular cup;

[0034] (2) Using one or two processing methods of laser processing and photolithography processing technology, the circular hole micro-texture regularly arranged on the inner surface of the smooth joint cup is processed, and the diameter of the circular hole micro-texture is 120 μm , the depth is 8 μm, and the coverage area is 30% of the inner surface area of ​​the acetabular cup. The distance between the centers of the micro-textured shape holes is 200 μm to obtain a texture...

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Abstract

The invention discloses an artificial joint with a self-repairing textured composite film structure and a preparation method thereof. The artificial joint includes a radiation-crosslinked ultra-high molecular weight polyethylene joint cup and a zirconia ceramic joint head, and the inner surface of the joint cup is processed Micro-texture with circular holes, capillary texture on the surface of the joint head, and a layer of self-repairing textured composite film grafted on the inner surface of the acetabular cup that rubs against the joint head. The texturing adopted by the present invention can greatly improve the storage performance and self-lubricating performance of lubricating fluid, and at the same time, the self-repairing textured composite film can also enhance the adhesion on the surface of the acetabular cup, and the combination is firm; the artificial joint of the present invention It has good wear resistance, and has the functions of self-repair and prevention of aseptic loosening, which improves the service life of artificial joints.

Description

technical field [0001] The invention belongs to the field of implant medical devices, in particular to an artificial joint with a self-repairing textured composite film structure and a preparation method thereof. Background technique [0002] The artificial joint formed by the combination of radiation-crosslinked ultra-high molecular weight polyethylene acetabular cup and ceramic joint head has the advantage of high cost performance, and is still widely used clinically. During daily activities, artificial joints are prone to wear under repeated friction, especially in the load zone. Clinical trials have found that radiation-crosslinked ultra-high molecular weight polyethylene and zirconia ceramic joints will also produce a large amount of wear debris, and the accumulation of wear debris in the body will induce a series of adverse biological reactions in the basal cells, leading to a series of adverse biological reactions around the prosthesis. Osteolysis and aseptic looseni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/16A61L27/10A61L27/34A61L27/54C08J7/18C08J7/14A61F2/30C08L23/06
CPCA61L27/16A61L27/10A61L27/34A61L27/54C08J7/18C08J7/14A61F2/30A61F2/30942A61L2430/24C08J2323/06A61L2300/104A61L2300/404A61F2002/30378A61F2002/30362A61F2002/30985C08L23/06
Inventor 刘思思邓宇星刘慧斯扈万鑫姜胜强
Owner XIANGTAN UNIV
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