Systems and methods for processing analyte sensor data
First Claim
1. A method for processing sensor data from a continuous analyte monitoring system, comprising:
- initializing a sensor of a continuous analyte monitoring system implanted within a body of a host user, the sensor in electrical communication with a sensor electronics of the continuous analyte monitoring system configured to receive and process sensor data by the sensor;
acquiring sensor data, using the sensor, to measure an analyte level in the host'"'"'s body over a first interval based on a first elapsed time since the sensor was implanted;
determining whether the sensor has been previously used in a previous sensor session or the sensor is a new sensor, wherein determining whether the sensor has been previously used comprises measuring a change in impedance of the sensor over a predetermined time period after implantation, and identifying that the measured change in impedance is substantially insignificant or levels off over at least a portion of the predetermined time period;
upon determining the sensor is a new sensor, adjusting the acquired sensor data to compensate for sensor drift of the new sensor by applying a first set of time-dependent algorithmic functions to the sensor data associated with the first interval, wherein the first set of time-dependent algorithmic functions comprise a first boundary of acceptability including a first drift rate of sensitivity over time and/or a first drift of baseline over time;
acquiring further sensor data, using the sensor, to measure the analyte level over a second interval based on a second elapsed time since the sensor was implanted and after the first interval; and
adjusting the acquired further sensor data by applying a second set of time-dependent algorithmic functions to the sensor data associated with the second interval, wherein the second set of time-dependent algorithmic functions comprise a second boundary of acceptability including a second drift rate of sensitivity over time and/or a second drift of baseline over time,wherein the first and second set of time-dependent algorithmic functions comprise first and second drift compensation functions, andwherein the first and second drift compensation functions differ in the amount of drift compensation that they apply.
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Abstract
Systems and methods for applying time-dependent algorithmic compensation functions to data output from a continuous analyte sensor. Some embodiments determine a time since sensor implantation and/or whether a newly initialized sensor has been used previously, for example, by initializing a sensor, acquiring sensor data, using the sensor, to measure an analyte level in the host'"'"'s body over a first interval based on a first elapsed time since the sensor was implanted, determining whether the sensor has been previously used in a previous sensor session or the sensor is a new sensor, and upon determining the sensor is a new sensor, adjusting the acquired sensor data to compensate for sensor drift of the new sensor by applying a first set of time-dependent algorithmic functions to the sensor data associated with the first interval.
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Citations
5 Claims
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1. A method for processing sensor data from a continuous analyte monitoring system, comprising:
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initializing a sensor of a continuous analyte monitoring system implanted within a body of a host user, the sensor in electrical communication with a sensor electronics of the continuous analyte monitoring system configured to receive and process sensor data by the sensor; acquiring sensor data, using the sensor, to measure an analyte level in the host'"'"'s body over a first interval based on a first elapsed time since the sensor was implanted; determining whether the sensor has been previously used in a previous sensor session or the sensor is a new sensor, wherein determining whether the sensor has been previously used comprises measuring a change in impedance of the sensor over a predetermined time period after implantation, and identifying that the measured change in impedance is substantially insignificant or levels off over at least a portion of the predetermined time period; upon determining the sensor is a new sensor, adjusting the acquired sensor data to compensate for sensor drift of the new sensor by applying a first set of time-dependent algorithmic functions to the sensor data associated with the first interval, wherein the first set of time-dependent algorithmic functions comprise a first boundary of acceptability including a first drift rate of sensitivity over time and/or a first drift of baseline over time; acquiring further sensor data, using the sensor, to measure the analyte level over a second interval based on a second elapsed time since the sensor was implanted and after the first interval; and adjusting the acquired further sensor data by applying a second set of time-dependent algorithmic functions to the sensor data associated with the second interval, wherein the second set of time-dependent algorithmic functions comprise a second boundary of acceptability including a second drift rate of sensitivity over time and/or a second drift of baseline over time, wherein the first and second set of time-dependent algorithmic functions comprise first and second drift compensation functions, and wherein the first and second drift compensation functions differ in the amount of drift compensation that they apply. - View Dependent Claims (2, 3, 4, 5)
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Specification