Electrochemical analyte sensor

  • US 8,706,180 B2
  • Filed: 06/10/2013
  • Issued: 04/22/2014
  • Est. Priority Date: 03/04/1998
  • Status: Expired due to Term
First Claim
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1. An in vivo glucose sensor, comprising:

  • a substrate having a distal region for partial implantation through a skin surface and a proximal region, the substrate including at least a first surface and a second surface;

    a working electrode disposed on the distal region of the first surface of the substrate and configured to be positioned in fluid contact with interstitial fluid under the skin surface;

    a counter electrode disposed on the distal region of the second surface of the substrate;

    a plurality of conductive contacts disposed on the proximal region of the substrate and on the first surface of the substrate, wherein a first one of the plurality of conductive contacts is in electrical communication with the work electrode, and a second one of plurality of conductive contacts is in electrical communication with the counter electrode;

    at least one via formed through the substrate that electrically connects the counter electrode to the second one of the plurality of conductive contacts;

    a sensing layer proximate to the working electrode; and

    a mass transport limiting layer proximate to the working electrode;

    wherein a flexibility of sensor is varied along a continuum of the substrate

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