Dual electrode system for a continuous analyte sensor

  • US 7,831,287 B2
  • Filed: 04/28/2008
  • Issued: 11/09/2010
  • Est. Priority Date: 10/04/2006
  • Status: Active Grant
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First Claim
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1. A continuous glucose sensor configured for insertion into a host and for detecting glucose in the host, the sensor comprising:

  • a first working electrode comprising a first electroactive surface disposed beneath an active enzymatic portion of a membrane system, wherein the first electroactive surface is configured to measure a measurable species and a noise-causing species; and

    a second working electrode comprising a second electroactive surface disposed beneath at least one of an inactive enzymatic portion of the membrane system or a non-enzymatic portion of the membrane system, wherein the second electroactive surface is configured to measure a noise-causing species, and wherein the membrane system comprises a membrane diffusion barrier that separates the first working electrode and the second working electrode such that diffusion of the measurable species between the first working electrode and the second working electrode is substantially blocked.

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