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Apparatus and method for noninvasively detecting the quality of cardiac pumping

  • US 7,569,018 B1
  • Filed: 02/18/2003
  • Issued: 08/04/2009
  • Est. Priority Date: 02/18/2003
  • Status: Expired due to Fees
First Claim
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1. An auditory pulse monitor for noninvasively detecting the amplitude of arterial pulses in a living subject on a beat-by-beat basis, comprising:

  • a light-weight optical sensor including a light source and photodetector adapted for application to a skin surface of said subject over a tissue bed containing an arterial supply, said photodetector generating an output signal proportional to the amplitude of an arterial pulse;

    an electronic circuit connected to said photodetector for generating a signal having a frequency proportional to the instantaneous output signal level of said photodetector, said frequency varying continuously during an individual heartbeat; and

    an audio indicator connected to said electronic circuit for generating an audible tone indicating the amplitude of the arterial pulse.

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