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LANCET DEVICE FOR GENERATING A PUNCTURE WOUND, AND LANCET DRIVE ASSEMBLY

  • US 20100168618A1
  • Filed: 03/04/2010
  • Published: 07/01/2010
  • Est. Priority Date: 12/10/2004
  • Status: Active Grant
First Claim
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1. A lancet device for generating a puncture wound in a skin surface, in particular for withdrawing a body liquid for diagnostic purposes, comprising:

  • a housing in which a lancet can move along a puncturing path;

    a lancet drive having a drive rotor that is driven by a drive spring;

    a lancet coupling mechanism that transforms a rotational motion of the drive rotor into a puncturing and return motion of the lancet along the puncturing path during a working cycle of the lancet drive, the lancet coupling mechanism comprising a steering curve traveler which travels along a steering curve of the lancet coupling mechanism;

    a reference element that is moveable relative to the lancet and relative to the housing, the reference element comprising a contact surface adapted to contact a skin surface, wherein, at the time of puncturing, the contact surface rests against the skin surface and is located in a defined position relative to the lancet drive, whereby a puncture wound with a reproducible puncturing depth is generated by the puncturing motion; and

    a reference element coupling mechanism that is coupled to the lancet drive for moving the reference element, the reference element coupling mechanism comprising a steering curve and a steering curve traveler which travels along the steering curve.

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