DUAL ELECTRODE SYSTEM FOR A CONTINUOUS ANALYTE SENSOR
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.
1 - 16 . (canceled)
17 . An implantable continuous glucose sensor comprising:
a first conductive layer comprising a first electrode;
a first insulative layer covering at least a portion of the first conductive layer; and
a second conductive layer covering at least a portion of the first insulative layer, wherein the second conductive layer comprises a second electrode;
a second insulative layer covering at least a portion of the second conductive layer;
a third conductive layer covering at least a portion of the second insulative layer, wherein the third conductive layer comprises a third electrode;
wherein the first electrode, the second electrode, and the third electrode are staggered along a longitudinal axis defined by the first conductive layer such that the second electrode extends vertically beyond the first electrode and the third electrode extends vertically beyond the second electrode.
18 . The sensor of claim 17 , wherein at least one of the first electrode, second electrode, or third electrode is a working electrode.
19 . The sensor of claim 17 , wherein at least one of the first electrode, second electrode, or third electrode is a working electrode.
20 . The sensor of claim 19 , further comprising a membrane disposed over the working electrode, wherein the membrane comprises a first domain configured to reduce a flux of glucose therethrough, wherein the first domain comprises a product of a reaction of an isocyanate compound with a compound comprising a hydroxyl group and/or a compound comprising an amine group.
21 . The sensor of claim 20 , wherein the membrane further comprises a second domain, wherein the second domain comprises an enzyme configured to react with glucose.
22 . The sensor of claim 17 , wherein at least one of the first electrode, second electrode, or third electrode is a reference electrode.
23 . The sensor of claim 17 , wherein at least of the first electrode, second electrode, or third electrode is a counter electrode.
24 . The sensor of claim 17 , wherein the first electrode is a working electrode, wherein the second electrode is a reference electrode, and wherein the third electrode is a counter electrode.