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Instruments and system for producing a sample of a body fluid and for analysis thereof

  • US 20110092854A1
  • Filed: 10/20/2009
  • Published: 04/21/2011
  • Est. Priority Date: 10/20/2009
  • Status: Abandoned Application
First Claim
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1. An instrument for producing a body fluid sample for analysis by piercing skin with a lancing element having a piercing tip, the instrument comprising:

  • a housing;

    a lancing drive within the housing for driving a lancing element connected thereto in a puncturing movement in which the lancing element moves, after triggering the puncturing movement, in a puncture direction until it reaches a point of maximum displacement and in a reverse direction after it has reached the point of maximum displacement;

    a pressure ring surrounding a skin contact opening and adapted for pressing against the skin such that the skin bulges into the skin contact opening for promoting expression of body fluid, wherein the skin contact opening has a circular opening with a diameter of at least about 3 mm and at most about 8 mm; and

    a pressing force control device for controlling a pressing force between the pressure ring and the skin at the time of triggering the puncturing movement, wherein the pressing force ranges between about 3 N and at the most about 8 N.

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