Patent ID: 7806920

Claim:
An implantation device to be placed into the mammalian heart by percutaneous implantation to replace sigmoid valves when such replacement is needed, the device comprising a combination of two endovascular stents with an intravascular multi-leaflet, one-way valve to serve as a prosthesis for diseased native valve of a mammal, the combination being adapted for percutaneous delivery, and comprising: (1) a valve including a tubular member formed of one of a naturally occurring tubular body channel and of a membrane, the membrane being selected from a group of materials consisting of biocompatible polymer and biologic flat membrane, said membrane configured as a truncated cone, the tubular body having an inflow orifice and an outflow orifice, the leaflets forming the outflow orifice and forming a plurality of comissures; a first encircling support consisting essentially of material selected from the group consisting of thin metal wire, thin plastic ring, or suture filament, said first encircling support being affixed in a substantially circular fashion around the tubular body in proximity of the inflow orifice, and a second encircling support consisting essentially of material selected from the group consisting of thin metal wire, thin plastic ring, or suture filament, said second encircling support being affixed at the location of the comissures to form a circle around the tubular body in proximity of the outflow orifice; (2) a first endovascular stent larger in diameter than the valve, the valve being attached to the first endovascular stent by affixing the inflow orifice of the valve to the first endovascular stent; (3) a second endovascular stent larger in diameter than the valve, the valve being attached to the second endovascular stent by affixing the second encircling support to the second endovascular stent.