A stent delivery system having a hydraulically actuated retractable sheath is disclosed. A pressurizing fluid is either supplied by an inflation lumen to a portion of a piston housing or is withdrawn from a portion of a piston housing, thereby actuating a piston. As the piston moves, a retractable sheath...http://www.google.es/patents/US6113608?utm_source=gb-gplus-sharePatente US6113608 - Stent delivery device
