Three embodiments of a single-step lancet are disclosed. Each such lancet embodiment provides true one-step operation. In a single operational step requiring only a unidirectional displacement of an actuator into a housing, a lancet blade is removed from an aseptic environment which protects and retains...http://www.google.com/patents/US6358265?utm_source=gb-gplus-sharePatent US6358265 - Single-step disposable safety lancet apparatus and methods
