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Detecting conditions associated with medical device operations using matched filters

  • US 10,124,113 B2
  • Filed: 06/24/2016
  • Issued: 11/13/2018
  • Est. Priority Date: 08/13/2013
  • Status: Active Grant
First Claim
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1. A method of detecting a condition associated with operation of a fluid infusion device, the method comprising:

  • obtaining an output indicative of a characteristic influenced by the operation of a fluid infusion device from a sensing arrangement;

    interpolating the output of the sensing arrangement to obtain correlated output values comprising estimated output values for intermediate values of an analysis domain variable between analysis domain variable values corresponding to the output, wherein the analysis domain variable is associated with a matched filter corresponding to the condition;

    applying the matched filter to the correlated output values to calculate a filtered output as a weighted sum of the respective correlated output values using filter coefficient values of the matched filter as weighting factors for the respective correlated output values; and

    detecting the condition based on the filtered output.

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