A needle guard assembly is provided for mounting to the hub of a needle assembly. The needle guard assembly includes a guide that is engageable on the hub. An elongate U-shaped cover is hingedly mounted to the guide and can be rotated from a first position where the needle cannula is substantially surrounded...http://www.google.de/patents/US6645182?utm_source=gb-gplus-sharePatent US6645182 - Pivotable guard for shielding a needle
