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US 8,911,369 B2Granted
Dual electrode system for a continuous analyte sensor
AssigneeDexCom, Inc.
InventorsMark Brister, James R. Petisce, Peter Simpson
Life of this patent
Estimating the term…
Abstract
Disclosed herein are systems and methods for a continuous analyte sensor, such as a continuous glucose sensor. One such system utilizes first and second working electrodes to measure additional analyte or non-analyte related signal. Such measurements may provide a background and/or sensitivity measurement(s) for use in processing sensor data and may be used to trigger events such as digital filtering of data or suspending display of data.
Claims10
An analyte sensor for measuring an analyte in a host, the sensor comprising:
- an elongated body comprising a first wire and a second wire, wherein the first wire comprises a first working electrode comprising a first electroactive surface and the second wire comprises a second working electrode comprising a second electroactive surface, wherein the first wire is substantially parallel to the second wire, wherein the first and second wires are spaced apart from a single longitudinal axis by an insulator and are embedded within the insulator, wherein the insulator comprises a first window that exposes the first electroactive surface area of the first electrode, wherein the insulator comprises a second window that exposes the second electroactive surface area of the second electrode, wherein the first electroactive surface area is disposed beneath an active enzymatic portion of a membrane, wherein the second electroactive surface area is disposed beneath an inactive-enzymatic or non-enzymatic portion of a membrane, wherein the first electroactive surface area and the second electroactive surface area are offset along an axis parallel to the first and second wires.
Dependencies are inferred from the claim text.