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Heart-sound detecting apparatus

  • US 6,824,519 B2
  • Filed: 08/31/2001
  • Issued: 11/30/2004
  • Est. Priority Date: 06/20/2001
  • Status: Expired due to Fees
First Claim
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1. An apparatus for detecting a heart sound of a living subject, comprising:

  • a memory device which stores heart-sound characteristic information which is characteristic of a heart sound of the subject;

    a pressure-pulse-wave sensor which is adapted to be worn on a limb of the subject, detects a pressure pulse wave which is produced from an artery of the limb and is propagated from the artery to the pressure-pulse-wave sensor, and produces a pressure-pulse-wave signal representing the detected pressure pulse wave and containing a heart-sound component; and

    a heart-sound determining means for determining, based on the heart-sound characteristic information stored in the memory device, the heart-sound component contained in the pressure-pulse-wave signal.

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