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Method and apparatus for body fluid sampling and analyte sensing

  • US 7,850,621 B2
  • Filed: 06/07/2004
  • Issued: 12/14/2010
  • Est. Priority Date: 06/06/2003
  • Status: Active Grant
First Claim
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1. A method of controlling a penetrating member at a tissue site for receiving a body fluid from a wound created at the tissue site, the method comprising:

  • (a) providing a lancing device that includes a penetrating member driver coupled to a position sensor and a processor, the position sensor and processor determining a relative position and velocity of the penetrating member based on measuring relative position of the penetrating member with respect to time;

    (b) launching the penetrating member from the lancing device;

    (c) measuring relative position of the penetrating member with respect to time with the processor and position sensor;

    (d) accelerating the penetrating member towards a target tissue;

    (e) in response to measuring relative position of the penetrating with respect to time using an adaptive control algorithm coupled to the penetrating driver to decelerate the penetrating member to follow a desired trajectory, wherein the penetrating member is not decelerated in a sudden manner where the target tissue bounds away from the penetrating member.

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