Method for preparing silver-enriched antibacterial film on pyrolytic carbon and TiN film for medical use

An antibacterial film, pyrolytic carbon technology, applied in the direction of ion implantation plating, coating, metal material coating process, etc., to achieve obvious antibacterial properties, uniform thickness and uniform distribution.
CN1827840AInactive Publication Date: 2006-09-06TIANJIN NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN NORMAL UNIVERSITY
Publication Date
2006-09-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates the method for preparing rich silver antibiotic film used for medical pyrolytic carbon and TiN film. It solves the antibiosis question. The method comprises the following steps: on the pyrolytic carbon: a buffing and cleaning; b evacuating; c sputtering and cleaning for 5 minutes with 1keV nitrogen ion; d injecting silver ion: 70, 30keV energy, 2-8mA beam current, 2X1014 / cm2-3X1014 / cm2 dosage, and forming rich silver antibiotic film and antibiosis ratio being 100%; on TiN film: a buffing and cleaning; b evacuating; c sputtering and cleaning for 5 minutes with 1keV nitrogen ion; d sputtering Ti target with 3keV, 80mA Ar+ ion, 20-40keV, beam current: bombarding with 2-8mA high-energy N+ ion for 10-20 minutes; 50-350eV, beam current: bombarding with 10-30mA low-energy N+ ion for 60-180 minutes to deposit, N2 air pressure being 8X10 3Pa; e injecting silver ion: 30-80keV, beam current: 2-8mA, 1X1017 / cm2-5X1018 / cm2 dosage, forming rich silver antibiotic film and antibiosis ratio being 90%. The film has the advantages of good abradability, strong adhesive force and anti-corrosion, good cell compatibility and long antibiosis time-effect. The film can be used to prepare artificial heart valve and hard tissue alternate material which is implanted in human.
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Description

technical field

[0001] The invention relates to the surface modification and optimization of a medical material, in particular to a method for preparing an antibacterial film on the surface of a medical material for implanting into a human body. Background technique

[0002] At present, when the medical materials used for implanting in the human body are in long-term (or temporary) contact with the human body, they must fully meet the characteristics of compatibility with the biological environment, antibacterial, non-toxic, etc., and this mainly depends on the interaction between the surface of the material and the biological environment . Therefore, controlling and improving the surface properties of medical materials is a key way to improve and promote the interaction between surfaces and organisms. Isotropic pyrolytic carbon, which has the characteristics of good mechanical properties, corrosion resistance and good biocompatibility, is the ...

Claims

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