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Arrhythmia detector using delta modulated turning point morphology of the ECG wave

  • US 5,301,677 A
  • Filed: 02/06/1992
  • Issued: 04/12/1994
  • Est. Priority Date: 02/06/1992
  • Status: Expired due to Term
First Claim
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1. An arrhythmia detector for analyzing ECG signals obtained from a heart, said detector comprising:

  • means for delta modulating an input ECG signal for obtaining a digital representation of said input ECG signal from a heart;

    means for periodically classifying said digital signal as representing no slope, positive slope, or negative slope segments of said input ECG signal and respectively generating a no slope, positive slope, or negative slope signal;

    means for determining, based upon a sequence over a predetermined period of time of no slope, positive slope, and negative slope signals, the amount of time an isoelectric line segment is present in said input ECG signal over said predetermined period of time; and

    means for issuing a fibrillation signal when the amount of time an isoelectric line is present in said input ECG signal is less than a predetermined threshold.

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