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Heartbeat occurrence detector

  • US 4,250,889 A
  • Filed: 03/02/1979
  • Issued: 02/17/1981
  • Est. Priority Date: 03/02/1979
  • Status: Expired due to Term
First Claim
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1. Apparatus for detecting a heartbeat occurrence in an electrocardiographic waveform containing artifact information, the heartbeat occurrence being represented by at least first and second pulses, the first and the second pulses respectively having amplitudes of at least a first and a second absolute value, and for providing an output signal indicative of said occurrence, the apparatus comprising:

  • means responsive to said waveform for detecting the first and the second values and for providing first and second signals indicative of said first and second pulses;

    means coupled to said detecting means for delaying said first signal a predetermined amount of time;

    means coupled to said detecting means and said delaying means and responsive to coincidence between said second signal and said delayed first signal to generate said output signal; and

    means coupled to said coincidence means and responsive to said output signal for inhibiting coincidence between said second signal and said delayed first signal for a second predetermined time period, the second predetermined time period corresponding to a predetermined maximum heartbeat rate.

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