×

Automatic blood pressure measuring device

  • US 4,917,116 A
  • Filed: 09/22/1988
  • Issued: 04/17/1990
  • Est. Priority Date: 09/22/1988
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for determining a subject'"'"'s true mean arterial blood pressure, said method comprising the steps of:

  • (a) inflating a pressure cuff affixed to an appendage of the subject to a pressure which exceeds a predicted systolic blood pressure of the subject;

    (b) deflating the pressure cuff in steps, while pausing between each deflation step;

    (c) detecting, recording and storing cuff pressure oscillations at each pause between successive cuff pressure deflation steps;

    (d) continuing the steps of deflating, detecting, recording and storing, until a cuff pressure is reached which is below the subject'"'"'s predicted diastolic blood pressure;

    (e) identifying the maximum cuff pressure oscillation noted and a first cuff pressure associated therewith;

    (f) identifying second and third next greatest cuff pressure oscillations on each side of said maximum oscillation, and second and third cuff pressures associated therewith; and

    (g) using data from steps (e) and (f) and calculating the percentage difference between the second and third next greatest oscillations to calculate the true mean arterial blood pressure of the subject therefrom.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×