Unitized three leaflet heart valve

摘要: A polyurethane heart valve has a semirigid frame composed of base ring and three struts, an elastomeric membrane integral unitary with the frame, contours which make up leaflets valve. The leading edges form commissure line are reinforced narrow elastomer band. further by radiating lines projected from into leaflet simulate collagen formation in natural leaflets. In addition, transition between is tapered.