A tubular prosthesis device for use within the body. The device includes, a metal filament material formed of metal outer member having an exposed outer surface and a core within the extended outer member formed of a different metal than the outer member. The core is secured within and substantially...http://www.google.com.au/patents/US7101392?utm_source=gb-gplus-sharePatent US7101392 - Tubular medical endoprostheses