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Artificial joint with stable structure lubricating layer and preparation method of artificial joint

A technology for stabilizing structure and artificial joints, applied in coatings, pharmaceutical formulations, medical science, etc., can solve the problems of unstable coating structure, easy swelling of coatings, etc., and achieve good structural integrity and lubricating performance effectiveness, The effect of stable connection bonding and good service life

Pending Publication Date: 2021-05-07
JINLING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the lubricating fluid, the polymer molecules absorb water and stretch, and the coating constructed by physical cross-linking is prone to swelling, resulting in unstable coating structure

Method used

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  • Artificial joint with stable structure lubricating layer and preparation method of artificial joint

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Oxygen plasma treatment was performed on the titanium alloy for 5 minutes to obtain a hydroxylated substrate; the hydroxylated substrate was immersed in a polyacrylamine hydrochloride polycation electrolyte aqueous solution with a concentration of 0.05 mg / mL for 30 minutes, and then cleaned with deionized water; Immerse in a polyacrylic acid polyanion electrolyte aqueous solution with a concentration of 0.05 mg / mL for 30 minutes, take it out, wash and dry it; immerse it in the two polyelectrolyte solutions for 30 times to form 30 polycation electrolyte layers and 30 polyanion electrolyte layers alternately assembled The electrolyte layer; finally, the polyelectrolyte layer was immersed in a 1% glutaraldehyde solution for 10 min. Made 1# titanium alloy artificial joint with stable structural lubricating layer.

Embodiment 2

[0054] The titanium alloy was irradiated with ultraviolet light for 15 minutes to obtain a hydroxylated substrate; the hydroxylated substrate was immersed in a polyethyleneimine polycation electrolyte solution with a concentration of 5 mg / mL for 5 minutes, and it was taken out and cleaned with deionized water; Then immerse in the polyacrylic acid polyanion electrolyte aqueous solution with a concentration of 5 mg / mL for 5 minutes, take it out, wash and dry it; immerse it in the two polyelectrolyte solutions for 10 times to form 10 layers of polycation electrolyte layer and 10 layers of polyanion electrolyte layer alternately Assembled electrolyte layer; finally, the polyelectrolyte layer was immersed in a 0.1% glutaraldehyde solution for 30 min. Made 2# titanium alloy artificial joint with stable structural lubricating layer.

Embodiment 3

[0056] The titanium alloy was treated with NaOH alkali solution, the concentration was 3 mol / L, and the water bath was kept at 60°C for 8 hours to obtain the hydroxylated substrate; the hydroxylated substrate was immersed in the polyallylamine hydrochloride polycation electrolyte with a concentration of 1 mg / mL 10 min in the aqueous solution, take it out and wash it with deionized water; then immerse it in the polymethacrylic acid polyanion electrolyte aqueous solution with a concentration of 1 mg / mL for 10 min, take it out, wash it and dry it; An electrolyte layer assembled alternately with 20 layers of polycation electrolyte layers and 20 layers of polyanion electrolyte layers; finally, the polyelectrolyte layer was immersed in a 2% glutaraldehyde solution for 20 min. Made 3# titanium alloy artificial joint with stable structural lubricating layer.

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Abstract

The invention discloses an artificial joint with a stable structure lubricating layer and a preparation method of the artificial joint. The artificial joint consists of the stable structure lubricating layer and a titanium alloy substrate, wherein the stable structure lubricating layer is a polymer layer. The preparation method of the stable structure lubricating layer comprises the following steps: (1) preparing a polymer solution; (2) performing hydroxylation treatment on the titanium alloy substrate; and (3) preparing a chemical cross-linked polymer coating. The invention provides the artificial joint with the stable structure lubricating layer and the preparation method of the artificial joint. The artificial joint has excellent anti-wear and anti-friction functions, the tribological performance can be improved, and the service life of the artificial joint is prolonged.

Description

technical field [0001] The invention relates to the field of artificial joint preparation. In particular, it relates to an artificial joint with a stable structural lubricating layer and a preparation method thereof. Background technique [0002] Titanium alloy has good biocompatibility, corrosion resistance and high strength, and is widely used in metal bearing parts of artificial joints. However, its high friction coefficient and wear rate seriously affect the quality and service life, which limits its wide application in the field of artificial joint materials. Therefore, improving the tribological properties of titanium alloy replacement joints is of great significance for increasing the service life of artificial joints, reducing the pain caused by replacement joints, and improving the quality of life of patients. [0003] Preparation of lubricating coating on the surface is an effective method to improve tribological properties. Some scholars have assembled polysacc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/06A61L27/34A61L27/50
CPCA61L27/06A61L27/34A61L27/50A61L2430/24A61L2400/18A61L2420/02A61L2420/08
Inventor 邓亚玲杨忠许煜
Owner JINLING INST OF TECH
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