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Advanced analyte sensor calibration and error detection

  • US 9,801,575 B2
  • Filed: 04/13/2012
  • Issued: 10/31/2017
  • Est. Priority Date: 04/15/2011
  • Status: Active Grant
First Claim
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1. A system for measuring an analyte, the system comprising sensor electronics configured to be operably connected to a continuous analyte sensor, the sensor electronics configured to:

  • apply a time-varying signal to the analyte sensor;

    measure a peak current from the sensor in response to the applied signal;

    determine a sensitivity of the analyte sensor, the determining comprising correlating the peak current to a predetermined sensor sensitivity curve that is a representation of a change in sensitivity over time, the determining further comprising selecting the predetermined sensitivity curve based on the peak current from a plurality of different predetermined sensitivity curves; and

    generate estimated analyte concentration values using the determined sensitivity and sensor data generated by the analyte sensor.

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