Patent ID: 7678144

Claim:
A valve prosthesis for implantation within a body lumen comprising a frame and at least one valve member comprising at least one semi-rigid leaflet and at least one flexible leaflet; the at least one semi-rigid leaflet comprising a first portion operatively coupled to the frame and a second portion being free of the frame, the at least one semi-rigid leaflet slanted in a retrograde direction from the second portion to the first portion; the at least one flexible leaflet comprising a first portion operatively coupled to the frame and a second portion being free of the frame, the at least one flexible leaflet slanted in a retrograde direction from the first portion to the second portion when at rest; the at least one flexible leaflet being moveable between a first position that permits fluid flow in a first direction and a second position in which the at least one flexible leaflet second portion coapts with the at least one semi-rigid leaflet second portion thus substantially preventing fluid flow in a second, retrograde direction.