An instrument for the deployment or retraction of a self-expanding stent in a body canal, which comprises an elongated tubular outer sleeve having disposed therein an elongated core which is movable relative to said sleeve and has a grip member formed at or near its distal end, which grip member is adapted...http://www.google.co.uk/patents/US5026377?utm_source=gb-gplus-sharePatent US5026377 - Stent placement instrument and method
