A hypodermic needle protector constituted by a single piece of molded synthetic resin, said piece having a distal portion which forms a cap in which the distal end portion of the needle is housed, and a proximal portion forming a base in which the proximal end portion of the needle is engaged, said two...http://www.google.de/patents/US6254577?utm_source=gb-gplus-sharePatent US6254577 - Hypodermic needle protector
