Minimally-invasive system and method for monitoring analyte levels

  • US 7,426,408 B2
  • Filed: 08/02/2004
  • Issued: 09/16/2008
  • Est. Priority Date: 12/21/2001
  • Status: Active Grant
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First Claim
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1. A device for detecting at least one analyte in a patient, comprising:

  • at least one active electrode passing through an opening in a substantially planar surface of an auxiliary electrode, said active electrode having a length such that said active electrode penetrates through the stratum corneum to a depth sufficient to access said analyte;

    whereinsaid planar surface of said auxiliary electrode is oriented such that a line normal to said planar surface is substantially parallel to a penetration direction of said active electrode, which substantially planar surface contacts an outside surface of patient'"'"'s skin when the active electrode has penetrated said stratum corneum; and

    at least one reference electrode adapted to penetrate through the stratum corneum, said reference electrode disposed apart from said active electrode at a distance equal to or less than a distance between said active electrode and any portion of said auxiliary electrode;

    wherein at least said active electrode and reference electrode are connected to a controller to enable the electrochemical detection of said analyte.

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