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Superior-and-inferior-limb blood-pressure index measuring apparatus and inferior-limb blood-pressure measuring apparatus

  • US 6,379,309 B1
  • Filed: 04/28/2000
  • Issued: 04/30/2002
  • Est. Priority Date: 05/17/1999
  • Status: Expired due to Term
First Claim
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1. An apparatus for measuring a superior-and-inferior-limb blood-pressure index of a living subject, comprising:

  • a first blood-pressure measuring device which measures a first blood pressure of a right inferior limb of the subject;

    a second blood-pressure measuring device which measures a second blood pressure of a left inferior limb of the subject;

    a third blood-pressure measuring device which measures a third blood pressure of a superior limb of the subject;

    a first information obtaining device which obtains first information relating to a first velocity of propagation of a first pulse wave which propagates through a first route a portion of which runs in the right inferior limb;

    a second information obtaining device which obtains second information relating to a second velocity of propagation of a second pulse wave which propagates through a second route a portion of which runs in the left inferior limb;

    selecting means for selecting one of the measured first and second blood pressures that corresponds to one of the first and second information that relates to a lower one of the first and second velocities; and

    index determining means for determining the superior-and-inferior-limb blood-pressure index, based on the selected one of the first and second blood pressures, and the measured third blood pressure.

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