Systems and methods for replacing signal artifacts in a glucose sensor data stream

  • US 8,073,519 B2
  • Filed: 10/14/2009
  • Issued: 12/06/2011
  • Est. Priority Date: 08/22/2003
  • Status: Active Grant
First Claim
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1. In a glucose sensing system comprising a glucose sensor configured for producing an output representative of glucose concentration in a host and processing circuitry configured to process the output, a method for processing data from the output, the method comprising:

  • generating at least one data stream from the glucose sensor output;

    evaluating the data stream to determine a presence of a signal artifact;

    determining a severity of the signal artifact over time;

    continuously generating an estimated data stream;

    initiating replacement of a portion of the data stream with a time-corresponding portion of the estimated data stream in response to determining that the severity of the signal artifact exceeds a first predetermined severity threshold; and

    terminating replacement of the data stream with the time-corresponding portion of the estimated data stream in response to determining that the severity of the signal artifact falls below a second predetermined severity threshold.

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