Analyte Monitoring Device and Methods of Use
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Abstract
An analyte monitor includes a sensor, a sensor control unit, and a display unit. The sensor has, for example, a substrate, a recessed channel formed in the substrate, and conductive material disposed in the recessed channel to form a working electrode. The sensor control unit typically has a housing adapted for placement on skin and is adapted to receive a portion of an electrochemical sensor. The sensor control unit also includes two or more conductive contacts disposed on the housing and configured for coupling to two or more contact pads on the sensor. A transmitter is disposed in the housing and coupled to the plurality of conductive contacts for transmitting data obtained using the sensor. The display unit has a receiver for receiving data transmitted by the transmitter of the sensor control unit and a display coupled to the receiver for displaying an indication of a level of an analyte. The analyte monitor may also be part of a drug delivery system to alter the level of the analyte based on the data obtained using the sensor.
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Citations
71 Claims
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2. A glucose sensor system 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; 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; and electronics operably connected to the first working electrode and the second working electrode and configured to process the first signal and the second signal to generate a glucose concentration substantially without signal contribution due to non-glucose related noise.
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17. 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 membrane; a second working electrode disposed beneath an inactive-enzymatic or non-enzymatic portion of a membrane, wherein the first working electrode and the second working electrode are configured to substantially equally measure non-analyte related noise, whereby the noise is substantially removed; and electronics operably connected to the first working electrode and the second working electrode, and configured to process the first signal and the second signal to generate sensor analyte data substantially without signal contribution due to non-analyte related noise. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. An analyte sensor system configured for insertion into a host for measuring an analyte in the host, the system comprising:
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a continuous analyte sensor comprising a first working electrode and a second working electrode, wherein the first working electrode is disposed beneath an active enzymatic portion of a membrane;
wherein the second working electrode is disposed beneath an inactive-enzymatic or non-enzymatic portion of a membrane, and wherein the first working electrode and the second working electrode are configured to measure interfering biochemical species such that signal contribution associated with the interfering biochemical species can be substantially removed continuously for a time period, wherein the time period is between about a few hours and about 10 days; andelectronics operably connected to the first working electrode and the second working electrode, and configured to process the first signal and the second signal to generate continuous sensor analyte data substantially without signal contribution due the biochemical species for said time period. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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Specification