×

Method and device for arterial blood pressure measurement

  • US 6,120,459 A
  • Filed: 06/09/1999
  • Issued: 09/19/2000
  • Est. Priority Date: 06/09/1999
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for measuring arterial diastolic blood pressure in a subject, the method comprising:

  • (a) generating first and second signals indicative, respectively, of cardiac induced pulsatile variations in tissue blood volume in a first region and a second region of the subject'"'"'s body;

    (b) processing said first and second signals to derive values of a delay between pulses in said first signal and corresponding pulses in second signal;

    (c) evaluating a baseline value of said delay;

    (d) applying a variable pressure to a third region of the subject'"'"'s body so as to affect blood flow through at least one artery in said third region, said variable pressure being varied as a function of time, said first, said second and said third regions being chosen such that said delay varies as a function of said variable pressure; and

    (e) identifying a value of said variable pressure corresponding substantially to a predefined non-zero value of said delay measured relative to said baseline value.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×