A surgical scalpel (100) is provided with a retractable guard (107) for its cutting blade (106). The guard (107) is mounted on the handle (101) of the scalpel (100) for sliding movement between an advanced position in which the blade (106) is covered and a retracted position in which the blade (106)...http://www.google.com/patents/US5569281?utm_source=gb-gplus-sharePatent US5569281 - Guarded surgical scalpel
