Prosthetic valves and a method for making a prosthetic valve for implantation in a body site are provided. The prosthetic valve includes at least one flexible member movable between a first position that permits fluid flow in a first direction and a second position that substantially prevents fluid flow...http://www.google.de/patents/US20070043431?utm_source=gb-gplus-sharePatent US20070043431 - Prosthetic valve
