Accession Number:

ADD012914

Title:

Arterial Blood Velocity to Volume Flow Converter.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1987-05-26

Pagination or Media Count:

6.0

Abstract:

A arterial blood velocity-to-volume flow rate converter, including a pair of function generators a computer, and a multiplier, is incorporated within a system to objectively measure by non-invasive means the blood volume flow rate to the head of an occupant in a rapidly accelerating vehicle, and take corrective measure to stabilize the vehicle when that flow falls below a preselected lower for a predetermined length of time. A conventional ultrasonic Doppler velocimeter determines the blood velocity, subsequently feeding a representive signal to pressure generator. The output thereform is then fed to a cross-sectional area signal generator which determines the time-varying area of the artery, a signal representing such being fed to the multiplier along the velocity signal to compute the flow. When that flow falls below a pre-selected lower limit for a predetermined length of time determined by a comparator and timer, a command signal is sent to override circuitry to stabilize the vehicle.

Subject Categories:

  • Flight Control and Instrumentation
  • Anatomy and Physiology
  • Biomedical Instrumentation and Bioengineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE