Biocompatible carbon prosthetic devices
AssigneeGeneral Atomic Company
InventorsJack C. Bokros, Jere B. Horsley, Jr.
Life of this patent
Estimating the term…
Abstract
A biocompatible prosthetic device comprising a metal alloy substrate, an intermediate layer of a high-temperature polymer which is strongly bonded thereto, and an exterior coating of dense vapor-deposited carbon. The carbon layer is thromboresistant and strongly adheres to the intermediate layer which in turn strongly adheres to the metal alloy. The polymer may be the reaction product of pyromelletic dianhydride and a diaminodiphenyl ether, and the carbon may be deposited under high vacuum conditions from a suitably heated carbon source, e.g., by ion-plating or vacuum vapor deposition.
Claims11
A biocompatible prosthetic device comprising a metal alloy substrate, an intermediate, continuous layer of an organic high-temperature polymer which is strongly bonded thereto, and an exterior in-situ-deposited coating of continuous dense vapor-deposited carbon at least 1000A thick which carbon layer is biocompatible and strongly adherent to said intermediate layer as a result of its in situ vapor deposition.
A biocompatible prosthetic device comprising a substrate, an intermediate continuous layer of an organic high-temperature polymer consisting essentially of a linear high-molecular-weight aromatic nitrogen-linked polymer, said intermediate layer being strongly bonded to said substrate, and an exterior coating at least 1000A thick of continuous, dense vapordeposited carbon, said carbon layer being deposited in situ upon said intermediate layer and thereby strongly adherent thereto.
Dependencies are inferred from the claim text.