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; and
an electronics module configured to receive sensor data from the continuous glucose sensor, wherein the electronics module comprises a processor configured to process sensor data received from the continuous glucose sensor, to calibrate the sensor data, and to determine a rate of change of the host'"'"'s glucose concentration based on the calibrated sensor data; and
a display;
wherein the system is configured to present, on the display, a rate-of-change icon in at least three different configurations, and wherein the system is configured to select a configuration in which to present the icon on the display from the at least three different configurations based on the determined rate of change in the host'"'"'s glucose concentration.
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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.
1100 Citations
24 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; and an electronics module configured to receive sensor data from the continuous glucose sensor, wherein the electronics module comprises a processor configured to process sensor data received from the continuous glucose sensor, to calibrate the sensor data, and to determine a rate of change of the host'"'"'s glucose concentration based on the calibrated sensor data; and a display; wherein the system is configured to present, on the display, a rate-of-change icon in at least three different configurations, and wherein the system is configured to select a configuration in which to present the icon on the display from the at least three different configurations based on the determined rate of change in the host'"'"'s glucose concentration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for processing continuous glucose sensor data, the system comprising:
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a receiver configured for receiving sensor data from a continuous glucose sensor; a processor; a display; and a computer readable memory comprising instructions configured to cause the processor to determine a rate of change of glucose concentration based on the sensor data and to present, on the display, a first directional arrow pointing in an upward direction when the determined rate of change is increasing at a first level, a second directional arrow pointing in an upward direction when the determined rate of change is increasing at a second level that is greater than the first level, a third directional arrow symbol pointing in a downward direction when the determined rate of change is decreasing at a third level, and a fourth directional arrow pointing in a downward direction when the determined rate of change is decreasing at a fourth level that is greater than the third level, wherein each of the first, second, third and fourth directional arrows are displayed at different positions on the display. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. 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; determining a change in glucose concentration based on the sensor data; and displaying, on a display, a directional arrow at a first position on the display when the determined change in glucose concentration is a first level, a directional arrow at a second position on the display when the determined change in glucose concentration is a second level, a directional arrow at a third position on the display when the determined change in glucose concentration is a third level, and a directional arrow at a fourth position on the display when the determined change in glucose concentration is a fourth level, wherein each of the first, second, third and fourth positions are different and wherein each of the first, second, third and fourth levels are different. - View Dependent Claims (17, 18, 19, 20)
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21. 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 module and computer readable memory having instructions configured to cause the processor module to; process sensor data received from the continuous glucose sensor, calibrate sensor data using at least one glucose concentration measurement from a reference glucose monitor operatively linked to the electronics module, determine a rate of change of glucose concentration using the calibrated sensor data, and display a directional arrow in at least one of three different positions on a display depending upon the determined rate of change. - View Dependent Claims (22, 23, 24)
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Specification