Method and apparatus for body fluid sampling and analyte sensing

  • US 7,892,183 B2
  • Filed: 07/03/2003
  • Issued: 02/22/2011
  • Est. Priority Date: 04/19/2002
  • Status: Active Grant
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, and wherein each of the plurality of penetrating members has a packing density of about 0.1 cm3;

    wherein an active one of said penetrating members is operatively coupled to said penetrating member driver, said penetrating member driver moving said active one of said penetrating 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;

    a processor coupled to the penetrating member driver and configured to provide instructions to the penetrating member driver for a fast-into of said active one penetrating members into the tissue site and slow-out velocity out of the tissue site; and

    a plurality of analyte detecting members positioned in the disposable, wherein at least one of said analyte detecting members is positioned to receive less than about 0.1 μ

    L of body fluid from a wound created by said active one of said penetrating members, and wherein said plurality of analyte detecting members are not pierced by the active one of the penetrating members.

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