Method and apparatus for penetrating tissue

  • US 8,197,421 B2
  • Filed: 07/16/2007
  • Issued: 06/12/2012
  • Est. Priority Date: 04/19/2002
  • Status: Expired due to Fees
First Claim
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1. A body fluid sampling system for use on a tissue site, the system comprising:

  • a controllable drive force generator;

    a feedback loop coupled to the controllable drive force generatora plurality of penetrating members operatively coupled to said controllable drive force generator, said controllable drive force generator moving each of said members along a path out of a housing having a penetrating member exit into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site each of a penetrating member at least partially positioned adjacent to an analyte detecting member in a sample chamber, each sample chamber configured to receive body fluid from a wound in tissue created by a penetrating member, and each analyte detecting member configured to determine analyte levels using a body fluid sample of less than about 1 microliter;

    a flexible support member carrying said penetrating members parallel to each other on its top to define a linear array, said support member being movable to move each of said penetrating members to a launch position associated with said force generator; and

    said controllable drive force generator and feedback loop configured to provide a controllable velocity trajectory into the tissue and out of said tissue.

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