Patent ID: 9011665
Filing Date: 2015-04-21
Classification: A61L,C23C,C25D

Abstract:
1. A titanium metal implant comprising a metal substrate for use in a surgical procedure, said implant having a mirror finish surface layer integral with said metal substrate and incorporating a biocidal metal material, said implant comprising as said surface layer an anodized hard layer including pits in said hard layer, the hard layer having a thickness between 0.07 microns and 0.7 microns and having a coloured appearance determined by the thickness, said pits being filled with a softer and more porous material than the hard layer, wherein the softer and more porous material comprises hydrous titanium dioxide, and wherein the surface layer comprises a surface area, and wherein said pits are of a diameter about 5 microns and said pits occupy between 15 and 20% of the surface area of the surface layer, said pits extending through said hard layer into said metal substrate, said hard layer and said pits including ions of said biocidal metal material as a result of ion exchange, with said more porous material in the pits having absorbed biocidal metal material to a larger extent than said hard layer, and wherein a phosphate matrix is present at said surface layer of said metal substrate, and wherein the phosphate matrix comprises biocidal metal ions.