Patent ID: 6419661
Filing Date: 2002-07-16
Classification: A61B

Abstract:
Blood lancet device for withdrawing blood for diagnostic purposes comprisingan elongated housing, the front end of which having an exit opening for the tip of a lancet, a lancet holder for holding the lancet, the lancet holder being movable in the housing in the direction of its main axis along a predetermined puncturing path, a lancet guide for guiding the lancet holder along the predetermined puncturing path and a lancet drive having an elastic drive spring which can be locked by a locking device in the loaded state of the drive spring, the lancet drive converting after triggering of the locking device the tension release movement of the drive spring into a puncturing motion to move the lancet, held in the lancet holder, at high speed along the predetermined puncturing path in the puncturing direction until its tip emerges from the exit opening to produce a wound in a body part adjacent the exit opening, wherein a double sided rotay/translatory transmission is provided in the housing, a) the input side of the rotary/translatory transmission converting the motion of a loading button, which projects out of the housing at its rear end and moves along a linear loading path, into a rotational motion of a lancet drive rotor, the lancet drive rotor being rotated about a rotational axis running parallel to the axis of the device to load the lancet drive rotor by tensioning the drive spring and b) the output side of the rotary/translatory transmission converting after triggering of the lancet drive a rotational motion of the lancet drive rotor driven by the drive spring into the puncturing motion in the direction of the main axis.