Patent ID: 6866641

Claim:
A disposable pricker comprising: an elongate housing with a spring-loaded, longitudinally movable lancet having a body and a needle tip carried therein, the needle tip normally being within the housing; a trigger mechanism to retain the lancet in a fully retracted position energizing the spring loading and actuable to release or fire the lancet to cause the needle tip to have a momentary position projecting from a forward end of the housing; means for preventing repeated use including a spring finger having a tip and extending rearwardly from the lancet alongside but spaced from the body thereof; and an abutment on the inside of the housing past which the tip of the finger can snap during forward motion of the lancet, any attempt to push the lancet back with a greater than predetermined force after firing causing the finger, with the finger tip arrested by the abutment to buckle into a rearward pointing V that wedges between the abutment and the body of the lancet.