A disposable pricker has a body (1,2) lance (4) spring (3) and cap (13) integrally moulded in plastics, the cap being subsequently separable. The lance tip (5) is a needle embedded in the moulding and relatively inaccessible within the body. Formations (17) within the cap compress the spring (3) as the...http://www.google.de/patents/US4869249?utm_source=gb-gplus-sharePatent US4869249 - Blood sampling devices
