Radiopaque coating for biomedical devices

A - Human Necessities – 61 – F

Patent

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A61F 2/06 (2006.01)

Patent

CA 2570194

A medical device has a porous radiopaque coating that can withstand the high strains inherent in the use of such devices without delamination. A coating of Ta is applied to a medical device, such as a stent, by vapor deposition so that the thermomechanical properties of the stent are not adversely affected. The coating preferable has high emissivity. The coating is applied via a generally oblique coating flux or a low energy coating flux.

L'invention concerne un dispositif médical présentant un revêtement radio-opaque poreux pouvant résister à une grande déformation inhérente à l'utilisation de tels dispositifs, sans délaminage. L'invention concerne un revêtement en Ta appliqué sur un dispositif médical, notamment une endoprothèse, par métallisation sous vide, de sorte que les propriétés thermomécaniques de l'endoprothèse ne soient pas altérées. Ce revêtement présente de préférence une émissivité élevée. Ce revêtement est appliqué par un flux de revêtement généralement oblique ou par un flux de revêtement de faible énergie.

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