Analyte sensor with time lag compensation

  • US 9,770,211 B2
  • Filed: 04/08/2016
  • Issued: 09/26/2017
  • Est. Priority Date: 01/31/2008
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • positioning an analyte sensor in fluid contact with bodily fluid under a skin surface to generate signals corresponding to monitored analyte level;

    determining a rate of change of the monitored analyte level at a first point in time of a time period;

    determining a lag corrected analyte level at the first point in time using the rate of change of the monitored analyte level at the first point in time;

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

    determining a sensitivity value based on the defined data set;

    determining a rate of change of the monitored analyte level at a second point in time subsequent to the first point in time;

    applying the determined sensitivity value to signals associated with the monitored analyte level at the second point in time to update the lag corrected analyte level at the first point in time using the determined rate of change at the second point in time; and

    estimating a time constant associated with the analyte sensor generating the signals corresponding to the monitored analyte level.

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