Expandable heart valves for minimally invasive valve replacement surgeries are disclosed. In a first embodiment, an expandable pre-assembled heart valve includes a plastically-expandable annular base having plurality of upstanding commissure posts. A tubular flexible member including a prosthetic section...http://www.google.se/patents/US20020198594?utm_source=gb-gplus-sharePatent US20020198594 - Minimally-invasive heart valves and methods of use