A novel bileaflet mitral heart valve is provided herein, which in two alternative embodiments may have symmetrical leaflets or assymmetrical leaflets. It has a stent including a circular base and a pair of upstanding struts separating a pair of arcuately shaped, depressed, reliefs, each such relief being...http://www.google.se/patents/US4759759?utm_source=gb-gplus-sharePatent US4759759 - Bubble heart valve
