Analyte sensor
First Claim
1. A sensor system for continuous measurement of a glucose concentration in a host, the sensor system comprising:
- a first sensor configured to measure a glucose concentration and generate a first signal, wherein the first sensor has a first sensitivity to an interferent;
a second sensor configured to measure the glucose concentration and generate a second signal, wherein the second sensor has a second sensitivity to the interferent, wherein the first sensitivity and the second sensitivity are different; and
sensor electronics configured to determine a glucose concentration value based on at least one of the first signal or the second signal, wherein the sensor electronics are configured to detect a presence of a level of an interferent, wherein the sensor electronics are configured to integrate the first signal and the second signal, wherein the sensor electronics are configured to accord a first weight to the first signal and accord a second weight to the second signal, and wherein a distribution of the first weight and the second weight determined at least in part by detection of the presence of the level of the interferent.
1 Assignment
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Accused Products
Abstract
Devices and methods are provided for continuous measurement of an analyte concentration. The device can include a sensor having a plurality of sensor elements, each having at least one characteristic that is different from other sensor(s) of the device. In some embodiments, the plurality of sensor elements are each tuned to measure a different range of analyte concentration, thereby providing the device with the capability of achieving a substantially consistent level of measurement accuracy across a physiologically relevant range. In other embodiments, the device includes a plurality of sensor elements each tuned to measure during different time periods after insertion or implantation, thereby providing the sensor with the capability to continuously and accurately measure analyte concentrations across a wide range of time periods. For example, a sensor system 180 is provided having a first working electrode 150 comprising a first sensor element 102 and a second working electrode 160 comprising a second sensor element 104, and a reference electrode 108 for providing a reference value for measuring the working electrode potential of the sensor elements 102, 104.
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Citations
17 Claims
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1. A sensor system for continuous measurement of a glucose concentration in a host, the sensor system comprising:
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a first sensor configured to measure a glucose concentration and generate a first signal, wherein the first sensor has a first sensitivity to an interferent; a second sensor configured to measure the glucose concentration and generate a second signal, wherein the second sensor has a second sensitivity to the interferent, wherein the first sensitivity and the second sensitivity are different; and sensor electronics configured to determine a glucose concentration value based on at least one of the first signal or the second signal, wherein the sensor electronics are configured to detect a presence of a level of an interferent, wherein the sensor electronics are configured to integrate the first signal and the second signal, wherein the sensor electronics are configured to accord a first weight to the first signal and accord a second weight to the second signal, and wherein a distribution of the first weight and the second weight determined at least in part by detection of the presence of the level of the interferent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for processing data from a sensor system configured for continuous measurement of a glucose concentration in a host, the method comprising:
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receiving a first signal, associated with a glucose concentration in a host, from a first sensor, wherein the first sensor has a first sensitivity to an interferent; receiving a second signal, associated with the glucose concentration in the host, from a second sensor, wherein the second sensor has a second sensitivity to the interferent, wherein the first sensitivity and the second sensitivity are different; detecting a presence of a level of an interferent; and determining, using sensor electronics, a glucose concentration value based on at least one of the first signal or the second signal, wherein determining the glucose concentration value comprises; according a first weight to the first signal and according a second weight to the second signal, wherein a distribution of the first weight and the second weight is determined at least in part by detection of the presence of the level of the interferent; and integrating the first signal and the second signal. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification