Patent ID: 8721717

Claim:
A valve, comprising: a tubular frame for the valve, wherein the tubular frame includes a first end, a second end, an outer surface, and an inner surface opposite the outer surface and defining a lumen; and a continuous piece of material forming a tubular cover, the cover folded around the first end of the frame so that the cover has an outer portion directly attached to the outer surface of the frame and a tapered inner portion extending over the inner surface of the frame, a first end of the cover forming an end of the outer portion and a second end of the cover forming an end of the inner portion, wherein the second end of the cover is attached directly to the tubular frame only at a first connection point and a second connection point to form first and second valve leaflets extending between the first and second connection points, the first valve leaflet and the second valve leaflet include surfaces defining a reversibly sealable opening for unidirectional flow of a liquid through the lumen.