Calibration techniques for a continuous analyte sensor
AssigneeDexCom, Inc.
InventorsApurv Ullas Kamath, Peter C. Simpson, James H. Brauker, Paul V. Goode, Jr.
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Abstract
Disclosed herein are systems and methods for calibrating a continuous analyte sensor, such as a continuous glucose sensor. One such system utilizes one or more electrodes to measure an additional analyte. Such measurements may provide a baseline or sensitivity measurement for use in calibrating the sensor. Furthermore, baseline and/or sensitivity measurements may be used to trigger events such as digital filtering of data or suspending display of data.
Claims18
A method for continuous glucose sensing, the method comprising:
- generating a glucose signal associated with a glucose concentration in a host using a continuous glucose sensor;
- measuring a sensitivity change of the continuous glucose sensor over a time period, wherein the measured sensitivity change is not based on a reference glucose measurement from a reference glucose monitor;
- and
- determining, using electronic circuitry, a stability of the continuous glucose sensor based on the measured sensitivity change;
- and
- calibrating the glucose signal using the measured sensitivity change.
A system for continuous glucose sensing, the system comprising:
- a continuous glucose sensor configured to generate a glucose signal associated with a glucose concentration in a host;
- and
- electronic circuitry configured to determine a stability of the continuous glucose sensor by measuring a sensitivity change over a time period and to calibrate the glucose signal using the measured sensitivity change, wherein the electronic circuitry is configured to measure the sensitivity change without a reference glucose measurement from a reference glucose monitor.
Dependencies are inferred from the claim text.