Patent ID: 8894824
Filing Date: 2014-11-25
Classification: A61F,A61L,C23C

Abstract:
1. A process for depositing a coating on a biomedical implant comprising the steps of: placing the biomedical implant in a sputter coating system containing at least two cylindrical sputter targets each comprising a volume defined by respective outer circular planes and an inner surface of the target and a sputtering material disposed on the inner surface, the at least two cylindrical sputter targets spaced apart so that each respective volume does not overlap, the biomedical implant being positioned between and outside of the volumes of the at least two cylindrical sputter targets, wherein the biomedical implant is positioned greater than or equal to 5 cm and less than or equal to 15 cm from the at least two cylindrical sputter targets; maintaining a background pressure of gas in the sputter coating system, wherein the background pressure of gas ranges from 3.4 mTorr to 18 mTorr; applying a voltage to the at least two cylindrical sputter targets to cause sputtering; and sputtering for a period of time to produce a continuous coating on the implant, said continuous coating is a Zone 1 coating and comprises columnar structures and pores, wherein said pores occur within said continuous coating itself.