Analyte sensor
First Claim
1. A sensor system for continuous measurement of a glucose concentration in a host, the sensor system comprising:
- a first continuous glucose sensor configured to measure glucose concentrations over a first time period of in vivo implantation and produce first sensor data, wherein the first sensor is configured to have a run-in time between 0.1 and 6 hours;
a second continuous glucose sensor configured to measure glucose concentrations over a second time period of in vivo implantation and produce second sensor data, wherein the second continuous glucose sensor is an optical sensor, wherein the first time period and the second time period are different, wherein the second time period begins after the first time period begins, wherein the first time period and the second time period overlap partially, but not completely; and
sensor electronics configured to determine glucose concentration values based on the first sensor data and the second sensor data, wherein the sensor electronics are configured to determine the glucose concentration values by integrating signals from the first sensor data and signals from the second sensor data, wherein the sensor electronics are configured to integrate signals from the first sensor data and signals from the second sensor data by according first weights to signals from the first sensor data and according second weights to signals from the second sensor data, and wherein magnitudes of the first weight and magnitudes of the second weights are dependent on a time period of a sensor session.
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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.
129 Citations
8 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 continuous glucose sensor configured to measure glucose concentrations over a first time period of in vivo implantation and produce first sensor data, wherein the first sensor is configured to have a run-in time between 0.1 and 6 hours; a second continuous glucose sensor configured to measure glucose concentrations over a second time period of in vivo implantation and produce second sensor data, wherein the second continuous glucose sensor is an optical sensor, wherein the first time period and the second time period are different, wherein the second time period begins after the first time period begins, wherein the first time period and the second time period overlap partially, but not completely; and sensor electronics configured to determine glucose concentration values based on the first sensor data and the second sensor data, wherein the sensor electronics are configured to determine the glucose concentration values by integrating signals from the first sensor data and signals from the second sensor data, wherein the sensor electronics are configured to integrate signals from the first sensor data and signals from the second sensor data by according first weights to signals from the first sensor data and according second weights to signals from the second sensor data, and wherein magnitudes of the first weight and magnitudes of the second weights are dependent on a time period of a sensor session. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification