A right angle safety needle has a base to which an arm is hingedly mounted at a proximal portion. The base has an opening at its distal portion wherethrough the vertical portion of the right angle needle extends. A well is formed adjacent the opening and a dam is provided on the side of the well away...http://www.google.de/patents/US6613015?utm_source=gb-gplus-sharePatent US6613015 - Right angle safety needle
