Sensor head for use with implantable devices

  • US 7,471,972 B2
  • Filed: 12/22/2004
  • Issued: 12/30/2008
  • Est. Priority Date: 07/27/2001
  • Status: Active Grant
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First Claim
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1. A sensor for use in a glucose measuring device, the sensor comprising:

  • a first electrode, a second electrode, and a non-conductive body located between the first electrode and the second electrode, wherein the first electrode and the second electrode each form an electrochemically reactive surface at one end of the sensor and an electronic connection at another end of the sensor, wherein an electrochemically reactive surface area of the second electrode is greater than an electrochemically reactive surface area of the first electrode; and

    a multi-region membrane covering the first electrode and the second electrode, wherein the multi-region membrane comprises an immobilized enzyme domain comprising an enzyme in at least a portion thereof, and wherein the immobilized enzyme is deactivated over the electrochemical reactive surface area of second electrode.

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