Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1993-11-18
1995-10-03
Roy, Upendra
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
623 11, 623 66, A61F 100, A61F 200
Patent
active
054548861
ABSTRACT:
Anti-microbial coatings and powders and method of forming same on medical devices are provided. The coatings are formed by depositing an anti-microbial biocompatible metal by vapour deposition techniques to produce atomic disorder in the coating such that a sustained release of metal ions sufficient to produce an anti-microbial effect is achieved. Preferred deposition conditions to achieve atomic disorder include a lower than normal substrate temperature, and one or more of a higher than normal working gas pressure and a lower than normal angle of incidence of coating flux. Anti-microbial powders formed by mechanical working to produce atomic disorder are also provided. The anti-microbial effect of the coatings or powders may be further activated or enhanced by irradiating with a low linear energy transfer form of radiation such as gamma radiation.
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Burrell Robert E.
McIntosh Catherine L.
Morris Larry R.
Roy Upendra
Westaim Technologies Inc.
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