An anatomically configured stent for a tanned, expanded natural tissue heart valve, a valve prosthesis including the stent, and a process for preparing the prosthesis are disclosed. The stent comprises a frame having three struts, two of which are biased radially inwardly and the third of which is also...http://www.google.se/patents/US4035849?utm_source=gb-gplus-sharePatent US4035849 - Heart valve stent and process for preparing a stented heart valve prosthesis
