A method and apparatus for forming a covered endoprosthesis employs a conformed polymeric coating about an expandable stent. The expandable stent has an open tubular construction. A first polymeric liner is positioned about an inner surface of the tubular stent and a second polymeric liner is positioned...http://www.google.co.uk/patents/US6139573?utm_source=gb-gplus-sharePatent US6139573 - Conformal laminate stent device