A prosthetic valve having a stent structure with a prosthetic valve component secured therein is disclosed that includes a device for restricting expansion, i.e., an expansion restrictor device, disposed at a blood inflow end of the stent structure. The expansion restrictor device defines a deployed...http://www.google.de/patents/US20100256723?utm_source=gb-gplus-sharePatent US20100256723 - Prosthetic Valve With Device for Restricting Expansion
