Dual electrode system for a continuous analyte sensor

  • US 7,761,130 B2
  • Filed: 03/27/2007
  • Issued: 07/20/2010
  • Est. Priority Date: 07/25/2003
  • Status: Active Grant
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First Claim
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1. An analyte sensor configured for measuring an analyte in a host, the sensor comprising:

  • a first working electrode disposed beneath an active enzymatic portion of a sensor membrane, wherein the sensor membrane comprises a first interference domain located over the first working electrode, and wherein the first interference domain is configured to substantially block flow of at least one interfering species; and

    a second working electrode disposed beneath an inactive-enzymatic portion of a sensor membrane or a non-enzymatic portion of a sensor membrane, wherein the sensor membrane comprises a second interference domain located over the second working electrode, wherein the second interference domain is configured to substantially block flow of at least one interfering species, and wherein the first interference domain is distinct from the second interference domain.

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