Patent ID: 8652645
Filing Date: 2014-02-18
Classification: A61L,C25D,Y10T

Abstract:
1. A medical device comprising a non-biodegradable metal or metal alloy having a treated surface wherein the treated surface is at least partially converted to an oxide film by plasma electrolytic oxidation using a colloid-dispersed system, wherein colloid-dispersed particles of the colloid-dispersed system are provided by silver particles, and wherein the converted surface is partially covered by islands formed by said silver particles such that the converted surface is continuously covered with the oxide film which is characterized by plateaus separated by grooves, wherein on top of the oxide film said islands form a non-continuous layer of metallic silver and partially silver oxide, with the islands being formed on the plateaus and in the grooves and with the islands having a thickness below 100 nm and a diameter ranging from 5 nm to 200 nm, wherein silver is homogeneously distributed all over the coating surface being present as particles with a particle size of about 1 to 20 nm.