Apparatus for delivering stents to body lumens include a flexible catheter shaft, an expandable member, a tubular prosthesis selectively movable in an axial direction over the expandable member, and a stop member disposed on the catheter shaft near the distal end of the catheter shaft for stopping the...http://www.google.co.uk/patents/US20050010276?utm_source=gb-gplus-sharePatent US20050010276 - Apparatus and methods for positioning prostheses for deployment from a catheter
