Analyte sensor with time lag compensation

  • US 8,473,022 B2
  • Filed: 01/30/2009
  • Issued: 06/25/2013
  • Est. Priority Date: 01/31/2008
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • determining a predetermined time period characterized with a rate of change of an analyte level below a preset threshold;

    defining a data set associated with a monitored analyte level within the predetermined time period;

    determining a sensitivity value based on the defined data set;

    applying, using one or more processors, the determined sensitivity value to signals associated with the monitored analyte level including the defined data set;

    estimating, using the one or more processors, a time constant, associated with an analyte sensor used to monitor the analyte level, using reference data, the monitored analyte level, and the rate of change of the monitored analyte level;

    performing, using the one or more processors, lag correction of the signals associated with the monitored analyte level based on the estimated time constant; and

    calibrating, using the one or more processors, the lag corrected signals to estimate a corresponding monitored glucose level.

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