Described are vascular valve devices for implantation in a patient. The vascular valve devices are designed to compensate for the retraction characteristics of a remodelable material used to form one or more leaflets. Alternatively, or in addition, the devices are designed to reduce retraction of the...http://www.google.de/patents/US7458987?utm_source=gb-gplus-sharePatent US7458987 - Vascular valves having implanted and target configurations and methods of preparing the same