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Method and apparatus for body fluid sampling and analyte sensing

  • US 8,372,016 B2
  • Filed: 09/30/2008
  • Issued: 02/12/2013
  • Est. Priority Date: 04/19/2002
  • Status: Expired due to Term
First Claim
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1. A body fluid sampling system for use on a tissue site, the system comprising:

  • a disposable;

    a penetrating member driver;

    a plurality of penetrating members arranged in a radial configuration in the disposable wherein sharpened distal tips of the penetrating members point radially outward;

    wherein an active one of said penetrating members may be operatively coupled to said penetrating member driver, said penetrating member driver moving said active one 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 following a predetermined velocity trajectory;

    a processor coupled to the penetrating member driver and configured to control a penetrating member velocity into and out of the tissue site via a feedback loop, wherein a velocity of a penetrating member entering the tissue site is greater than a velocity of the penetrating member exiting the tissue site; and

    a plurality of analyte detecting members, wherein at least one of said analyte detecting members is positioned to receive fluid from a wound created by said active one of said penetrating members.

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