To improve anti-thrombosis while enabling prolonged maintenance thereof by forming a diamond-like carbon film on the surface and the internal surface of an artificial heart and also, enable firmly fastening of the film on a base material by a low temperature molding.
An artificial heart 1 is constituted of a cylindrical drive part 2, a pump part 3 connected to the drive part 2 and a nozzle part 4 to be inserted into a left ventricle. A surface layer is formed so as to make on interface between the base material and the surface layer and an anti-thrombus treatment is performed. In other words, a formation of a thin film by ion plating or evaporation is performed before or simultaneously with an ion implantation method or in an alternate manner. Atoms at a part of the thin film thus formed creeps into the base material by the impingement of ions during the implantation of ions. This enables forming of a diamond-like carbon film without any base material and interface thereby achieving an excellent anti-thrombosis and prolonged maintenance thereof.
YAMAZAKI KENJI
HIGUCHI KOJI
SATO SUSUMU
SEIKO EPSON CORP
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