Patent ID: 8623446
Filing Date: 2014-01-07
Classification: A61L,C02F,C23C

Abstract:
1. An antibacterial bilayer coated medical device, comprising; a metal and metal oxide ion plasma deposited nanoparticulate first layer on a medical device surface, said first layer consisting of metal and metal oxide nanoparticulates substantially free of macroparticulates; a metal and metal oxide ion plasma deposited second layer over the first layer, said second layer consisting of mixed sizes of metal and metal oxide medium size macroparticulates ranging from 100 nm up to about 1 micron; wherein ultraviolet (UV) light irradiation of the nanoparticulates and macroparticulates during the ion plasm deposition activates ground state oxygen in the metal oxide to a reactive oxygen species to provide an enhanced antimicrobially active coating on the medical device.