Dual electrode system for a continuous analyte sensor
First Claim
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1. An analyte sensor configured for insertion into a host for measuring an analyte in the host, the sensor comprising:
- a first working electrode disposed beneath an active enzymatic portion of a sensor membrane; and
a second working electrode disposed beneath an inactive-enzymatic or a non-enzymatic portion of a sensor membrane, wherein the first working electrode and the second working electrode each integrally form at least a portion of the sensor.
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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.
541 Citations
35 Claims
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1. An analyte sensor configured for insertion into a host for measuring an analyte in the host, the sensor comprising:
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a first working electrode disposed beneath an active enzymatic portion of a sensor membrane; and
a second working electrode disposed beneath an inactive-enzymatic or a non-enzymatic portion of a sensor membrane, wherein the first working electrode and the second working electrode each integrally form at least a portion of the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A glucose sensor configured for insertion into a host for measuring a glucose concentration in the host, the sensor comprising:
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a first working electrode configured to generate a first signal associated with glucose and non-glucose related electroactive compounds, the glucose and non-glucose related electroactive compounds having a first oxidation potential; and
a second working electrode configured to generate a second signal associated with noise of the glucose sensor comprising signal contribution due to non-glucose related electroactive compounds with an oxidation potential that substantially overlaps with the first oxidation potential, wherein the first working electrode and the second working electrode each integrally form at least a portion of the sensor. - View Dependent Claims (25, 26, 27)
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28. A system configured for measuring a glucose concentration in a host, the system comprising:
a processor module configured to receive or process a first signal associated with glucose and non-glucose related electroactive compounds, the glucose and non-glucose related electroactive compounds having a first oxidation potential, and to receive or process a second signal associated with noise of the glucose sensor comprising signal contribution due to non-glucose related electroactive compounds with an oxidation potential that substantially overlaps with the first oxidation potential, wherein the first working electrode and the second working electrode each integrally form at least a portion of the sensor, and wherein the processor module is further configured to process the first signal and the second signal to generate glucose concentration data substantially without signal contribution due to non-glucose-related noise. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
Specification