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 so as to generate real-time glucose readings from the sensor data, to detect an approaching clinical risk based at least in part on an acceleration of the host'"'"'s glucose concentration, and to determine a possibility of avoiding the approaching clinical risk, wherein the electronics module delays activation of an alarm when the possibility of avoiding the approaching clinical risk is determined.
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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.
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Citations
19 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 so as to generate real-time glucose readings from the sensor data, to detect an approaching clinical risk based at least in part on an acceleration of the host'"'"'s glucose concentration, and to determine a possibility of avoiding the approaching clinical risk, wherein the electronics module delays activation of an alarm when the possibility of avoiding the approaching clinical risk is determined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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 non-transitory 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 so as to generate real-time glucose readings from the sensor data for the first time period; instructions configured to cause the processor to detect an approaching clinical risk based at least in part on an acceleration determined from the sensor data and to determine a first possibility of avoiding the approaching clinical risk; instructions configured to cause the processor to wait a predetermined amount of time to determine a second possibility of avoiding the detected clinical risk when the first possibility meets a criterion; and instructions configured to cause the processor to activate an alarm when the first or second possibility meets a second, different criterion. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification