ANALYTE SENSOR

  • US 20090242399A1
  • Filed: 03/25/2008
  • Published: 10/01/2009
  • Est. Priority Date: 03/25/2008
  • Status: Abandoned Application
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First Claim
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1. A method for processing sensor data from a dual-electrode continuous analyte sensor configured for exposure to a circulatory system of a host in vivo the method comprising:

  • applying a dual-electrode continuous analyte sensor to a host, wherein the sensor comprises a first working electrode disposed beneath an enzymatic portion of a membrane system and a second working electrode disposed beneath a non-enzymatic portion of the membrane system, wherein the enzymatic portion comprises an enzyme for detecting an analyte and the non-enzymatic portion comprises no enzyme or an inactive form of the enzyme;

    receiving a first signal from the first working electrode associated with the analyte and non-analyte related electroactive compounds, and receiving a second signal from the second working electrode associated with the non-analyte related electroactive compounds, wherein the non-analyte related electroactive compounds have an oxidation potential that substantially overlaps with an oxidation potential of the analyte;

    estimating a scaling factor, wherein the scaling factor defines a relationship between the first working electrode and the second working electrode; and

    processing the first signal and the second signal to obtain a signal substantially without contribution due to non-analyte related electroactive compounds, wherein the processing comprises using the scaling factor.

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