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 continuous 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 calibrate sensor data received from the continuous glucose sensor for a first time period 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 determine whether there is a possibility of avoiding the clinical risk when an approaching clinical risk is detected, the approaching clinical risk detection comprising predicting a potential glucose concentration for a second time period based at least in part on calibrated sensor data;
wherein the system is configured to trigger a user perceptible alert responsive to the detection of an approaching clinical risk.
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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.
789 Citations
37 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 continuous 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 calibrate sensor data received from the continuous glucose sensor for a first time period 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 determine whether there is a possibility of avoiding the clinical risk when an approaching clinical risk is detected, the approaching clinical risk detection comprising predicting a potential glucose concentration for a second time period based at least in part on calibrated sensor data;wherein the system is configured to trigger a user perceptible alert responsive to the detection of an approaching clinical risk. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. 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; a computer readable memory comprising; instructions configured to cause the processor to calibrate sensor data received from the continuous glucose sensor for a first time period; and 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 calibrated sensor data, and when an approaching clinical risk is detected further determining a possibility of avoiding the clinical risk; and a display; wherein the device is configured to trigger a user perceptible alert responsive to the detection of approaching clinical risk. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. 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; generating real-time glucose readings from the sensor data by calibrating sensor data by using at least one glucose concentration measurement by a reference glucose monitor operatively linked to the electronic device; detecting an approaching clinical risk by predicting a potential glucose concentration value for a future time period based at least in part on calibrated sensor data, and determining a possibility of avoiding the clinical risk when an approaching clinical risk is detected; and triggering a user perceptible alert responsive to the detection of an approaching clinical risk. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. 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 continuous glucose sensor is configured for transcutaneous implantation; means for receiving sensor data from the continuous glucose sensor; means for calibrating sensor data received from the continuous glucose sensor for a first time period; means for detecting an approaching clinical risk based at least in part of calibrated sensor data and for determining a possibility of avoiding the clinical risk when an approaching clinical risk is detected; and means for triggering a user perceptible alert responsive to the detection of an approaching clinical risk.
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Specification