This invention relates to a medical device, namely a novel clip to be used in conjunction with a Harrington rod for the treatment of spinal disorders. The hook has a body portion with a housing at one end thereof, with a hooked portion at the opposite end. A sleeve is inserted through and is retained...http://www.google.fr/patents/US4433676?utm_source=gb-gplus-shareBrevet US4433676 - Self-adjusting spinal scoliosis fusion hook
