Anti-microbial coating for medical devices
US6238686A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1997 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Jun 25, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/931
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Anti-microbial coatings and method of forming same on medical devices are provided. The coatings are formed by depositing a 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 lower than normal angle of incidence of coating flux. Anti-microbial powders formed by mechanical working to produce atomic disorder are also provided. The invention extends to other metal coating and powders similarly formed so as to provide enhanced solubility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.