Patent ID: 7389133
Filing Date: 2008-06-17
Classification: A61B

Abstract:
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 (z determining the change over time of the concentration of the analyte from the measurement signal as a useful signal (y providing a filter algorithm in the time domain for determination of the useful signal (y determining a time dependent signal variation parameter (σ wherein the time dependent signal variation parameter being a measure for signal variations for a period of time preceding an actual measurement value and being determined on the basis of measurement values including values which were measured less than 30 minutes before the measurement of the actual 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, the weighting factor being changed in such a direction that the influence of the actual measurement value is reduced with increasing standard deviation of the measurement signal.