Patent ID: 6461362
Filing Date: 2002-10-08
Classification: A61M

Abstract:
A medical device, comprising:a hollow housing; a needle having a sharpened tip operable between a projecting position in which the sharpened tip projects forwardly from the housing and a retracted position in which the sharpened tip is enclosed within the housing; a biasing element biasing the needle toward the retracted position; a catheter telescopingly engaging the needle, wherein the catheter is operable in three positions: a mounted position in which the catheter engages the needle such that the sharpened tip of the catheter projects forwardly from the catheter; a sheathed position displaced axially forwardly of the mounted position so that the catheter sheathes the sharpened tip of the needle; and a removed position in which the catheter is removed from the needle; a lock releasably locking the catheter in the sheathed position; wherein displacing the catheter from the sheathed position to the removed position operates to release the needle so that the biasing element displaces the needle into the retracted position.