SIGNAL PROCESSING FOR CONTINUOUS ANALYTE SENSOR
First Claim
1. A glucose sensor system for monitoring glucose concentration in a biological sample of a host, the system comprising:
- a continuous glucose sensor configured to produce sensor data indicative of a host'"'"'s glucose concentration, wherein the continuous glucose sensor comprises a sensing region and a sensing membrane located over the sensing region, and wherein at least a portion of the glucose sensor is configured for transcutaneous implantation; and
an electronics module configured to receive sensor data from the continuous glucose sensor, the electronics module comprising a processor configured to process sensor data received from the continuous glucose sensor for a first time period, to calibrate sensor data using a glucose concentration measured by a reference glucose monitor operatively linked to the electronics module so as to generate real-time glucose readings from the sensor data and the calibration;
wherein the electronics module is further configured to detect an approaching clinical risk and to activate an alarm based at least in part on the detection, and wherein the detection comprises predicting potential glucose concentration for a second time period based at least in part on both an extrapolation of real time glucose readings and on a variation analysis.
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Accused Products
Abstract
Systems and methods for dynamically and intelligently estimating analyte data from a continuous analyte sensor, including receiving a data stream, selecting one of a plurality of algorithms, and employing the selected algorithm to estimate analyte values. Additional data processing includes evaluating the selected estimative algorithms, analyzing a variation of the estimated analyte values based on statistical, clinical, or physiological parameters, comparing the estimated analyte values with corresponding measure analyte values, and providing output to a user. Estimation can be used to compensate for time lag, match sensor data with corresponding reference data, warn of upcoming clinical risk, replace erroneous sensor data signals, and provide more timely analyte information encourage proactive behavior and preempt clinical risk.
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Citations
27 Claims
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1. A glucose sensor system for monitoring glucose concentration in a biological sample of a host, the system comprising:
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a continuous glucose sensor configured to produce sensor data indicative of a host'"'"'s glucose concentration, wherein the continuous glucose sensor comprises a sensing region and a sensing membrane located over the sensing region, and wherein at least a portion of the glucose sensor is configured for transcutaneous implantation; and an electronics module configured to receive sensor data from the continuous glucose sensor, the electronics module comprising a processor configured to process sensor data received from the continuous glucose sensor for a first time period, to calibrate sensor data using a glucose concentration measured by a reference glucose monitor operatively linked to the electronics module so as to generate real-time glucose readings from the sensor data and the calibration; wherein the electronics module is further configured to detect an approaching clinical risk and to activate an alarm based at least in part on the detection, and wherein the detection comprises predicting potential glucose concentration for a second time period based at least in part on both an extrapolation of real time glucose readings and on a variation analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for processing continuous glucose sensor data, the device comprising:
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a housing; a receiver configured for receiving sensor data from a continuous glucose sensor; a processor; and a computer readable memory comprising; instructions configured to cause the processor to process sensor data received from the continuous glucose sensor for a first time period; instructions configured to cause the processor to calibrate the processed sensor data using a glucose concentration measured by a reference glucose monitor operatively linked to the device so as to generate real-time glucose readings from the sensor data and the calibration for a first time period; instructions configured to cause the processor to detect an approaching clinical risk by predicting a potential glucose concentration value for a second time period based at least in part on both an extrapolation of calibrated sensor data and on a variation analysis; and instructions configured to cause the processor to activate an alarm based at least in part on the detection. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for processing sensor data, the method comprising:
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receiving, with an electronic device, sensor data from a continuous glucose sensor; measuring at least one glucose concentration of a biological sample using a reference glucose monitor operatively linked to an electronics module; calibrating sensor data by using at least one glucose concentration measurement by the reference glucose monitor; detecting an approaching clinical risk by performing both an extrapolation of previously calibrated sensor data and performing a variation analysis; and activating an alarm based at least in part on the detecting. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A system for processing sensor data from a continuous glucose sensor, the system comprising:
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means for receiving sensor data from the continuous glucose sensor; means for measuring at least one glucose concentration of a biological sample using a reference glucose monitor operatively linked to an electronics module; means for calibrating sensor data by using at least one glucose concentration measurement by the reference glucose monitor; means for detecting an approaching clinical risk by performing both an extrapolation of previously calibrated sensor data and performing a variation analysis; and means for activating an alarm based at least in part on the detecting.
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Specification