Method and device for continuous monitoring of the concentration of an analyte

  • US 20060052679A1
  • Filed: 11/03/2005
  • Published: 03/09/2006
  • Est. Priority Date: 09/23/2003
  • Status: Abandoned Application
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First Claim
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1. A method for continuous monitoring concentration of an analyte by determining the analyte'"'"'s change over time in the living body of a human or animal, the method comprising:

  • measuring at sequential points in time, measurement values of a measurement variable correlating with a desired concentration of the analyte;

    measuring the measurement variable as a measurement signal (zt);

    determining the change over time of the concentration of the analyte from the measurement signal as a useful signal (yt) by means of a calibration;

    providing a filter algorithm in the time domain for determination of the useful signal (yt) from the measurement signal (zt), wherein the filter algorithm reduces errors of the useful signal resulting from noise contained in the measurement signal, wherein the filter algorithm includes an operation in which the influence of an actual measurement value on the useful signal is weighted by means of a weighting factor (V);

    determining a signal variation parameter (σ

    t) on the basis of signal variations detected in close chronological relation to the measurement of the actual measurement value; and

    adapting dynamically the weighting factor as a function of the signal variation parameter determined for the point in time of the actual measurement.

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