Calibration of analyte measurement system

  • US 10,092,229 B2
  • Filed: 06/29/2011
  • Issued: 10/09/2018
  • Est. Priority Date: 06/29/2010
  • Status: Active Grant
First Claim
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1. A method, the method comprising:

  • positioning a portion of an analyte sensor through a skin surface in fluid contact with biofluid under the skin surface of a subject;

    generating a signal from the analyte sensor, the signal corresponding to an analyte concentration level in the biofluid;

    storing, using one or more processors, a pre-set calibration schedule and at least one user-defined time period having a beginning time set by the subject and an ending time set by the subject;

    prompting, using the one or more processors, the subject to assay a calibration sample of the subject'"'"'s blood to obtain a calibration value only when a first condition is met;

    selecting, using the one or more processors, a first time frame and a maximum number of calibrations in the first time frame;

    confirming, using the one or more processors, that a time for prompting the subject to assay the calibration sample is outside of the user-defined time period; and

    correlating, using the one or more processors, the calibration value to at least one of the signals from the sensor when the first condition is met;

    wherein the first condition is met when fewer than the maximum number of calibrations have occurred in the first time frame; and

    prior to prompting the subject to assay the calibration sample, performing a data validation routine including a check for sensor electronics hardware error, a check on the data quality, and a check for current and/or voltage saturation.

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