A pre-slit injection site includes a housing with a flow path therethrough. A first end of the housing carries a pre-slit septum. One form of a blunt cannula, usable with the injection site, carries a locking member. When the pre-slit injection site slidably receives the blunt cannula, the locking member...http://www.google.de/patents/US6447498?utm_source=gb-gplus-sharePatent US6447498 - Pre-slit injection site and tapered cannula
