A new catheter stick protector is described having a metal flap clip which snaps down into place to prevent return of the needle through the protector device once withdrawn. The device is small and received over the needle to provide an interface between the needle hub and the hub of a catheter like...http://www.google.es/patents/US5419766?utm_source=gb-gplus-sharePatente US5419766 - Catheter with stick protection