Systems and methods for replacing signal artifacts in a glucose sensor data stream

  • US 9,427,183 B2
  • Filed: 07/12/2011
  • Issued: 08/30/2016
  • Est. Priority Date: 08/22/2003
  • Status: Active Grant
First Claim
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1. A method for processing data from a continuous glucose sensor, the method comprising:

  • providing a glucose sensor operably connected to electronic circuitry;

    monitoring, using the electronic circuitry, a signal generated by a working electrode of the glucose sensor, the signal comprising a glucose sensor data point;

    further monitoring, using the electronic circuitry, an output of a counter electrode of the glucose sensor;

    detecting, using the electronic circuitry, a signal artifact associated with the glucose signal based on the monitoring of the output of the counter electrode, wherein the detecting includes determining a first state of severity from a plurality of state of severities of the signal artifact;

    selecting a first signal estimation algorithm from a group of one or more signal estimation algorithms based on the determination of the first state of severity of the signal artifact, wherein the first signal estimation algorithm is different from the other plurality of signal estimation algorithms and wherein each of the plurality of signal estimation algorithms use historical and/or present signal data to estimate unknown signal data;

    applying using the electronic circuitry, the selected first signal estimation algorithm;

    generating an estimated sensor data point based on the application of the selected first signal estimation algorithm; and

    replacing, using the electronic circuitry, the sensor data point with the estimated sensor data point.

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