Method for preparing biomedical titanium and titanium alloy surface antibacterial coatings

A surface antibacterial, titanium alloy technology, applied in the direction of surface reaction electrolytic coating, metal material coating process, coating, etc., can solve the problems of silver content reduction, difficult antibacterial effect, etc., achieve high production efficiency, avoid bacterial infection, adaptable effect
CN102758202AActive Publication Date: 2012-10-31NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Publication Date
2012-10-31

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Abstract

The invention discloses a method for preparing biomedical titanium and titanium alloy surface antibacterial coatings. The method comprises steps of firstly, processing the surface of a biomedical titanium or titanium alloy sample to be processed, immersing the biomedical titanium or titanium alloy sample in a glycol aqueous solution containing soluble fluoride and performing an anode oxidation treatment; secondly, immersing the biomedical titanium or titanium alloy sample after being subjected to the anode oxidation treatment in a silver nitrate solution, taking out the biomedical titanium or titanium alloy sample, using ultraviolet light radiation to process the biomedical titanium or titanium alloy sample and obtaining the silver-carrying biomedical titanium or titanium alloy sample; and performing a micro-arc oxidation treatment for the silver-carrying biomedical titanium or titanium alloy sample, performing ultrasonic cleaning and vacuum drying and obtaining the antibacterial coatings. The nano precoating layer preparation, the silver-carrying treatment and a micro-arc oxidation technology are combined, then a large amount of silver can be fixed on the biomedical titanium and titanium alloy sample surfaces and can be released slowly for a long time, the antibacterial performance of titanium and titanium alloys is greatly improved, the antibacterial effect can be kept for a long time, and the bacterial infection caused by the fact that a titanium and titanium alloy apparatus is embedded in a human body is greatly reduced or avoided.
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Description

technical field

[0001] The invention belongs to the technical field of surface modification of surgically implanted titanium and titanium alloys, in particular to a method for preparing an antibacterial coating on the surface of medical titanium and titanium alloys. Background technique

[0002] Due to their excellent biocompatibility, corrosion resistance and comprehensive mechanical properties, titanium and titanium alloys have gradually become the materials of choice for human hard tissue substitutes and restorations such as dental implants, orthopedic trauma products, and artificial joints. However, with the widespread application of medical titanium and titanium alloys, biomaterial centered infections (BCI) have become a very difficult clinical problem. It has been reported in the literature that the incidence of screw tract infection of titanium alloy implants is not the same, and the incidence of severe screw tract infection requiring hospitalization for antibiotic tr...

Claims

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