Patent ID: 8409275

Claim:
A valve assembly for controlling fluid flow in a lumen having an annulus, the valve assembly comprising: a valve having a circumferential edge and defining a plurality of leaflets, wherein the valve and the defined plurality of leaflets are substantially planar in an unstressed position, wherein, in the unstressed position, the diameter of the valve is larger than the diameter of the annulus, wherein a portion of the valve adjacent the circumferential edge of the valve is configured for attachment to the annulus in a biased position, wherein each leaflet has a distal end portion that extends inwardly relative to the circumferential edge of the valve generally toward a radial center of the valve, wherein, upon attachment of the valve to the annulus in the biased position, the valve is substantially non-planar, the plurality of leaflets are substantially non-planar, and the circumferential edge of the valve is positioned along the circumference of the annulus in a substantially sinusoidal pattern, and wherein at least a portion of the valve comprises extracellular matrix material.