Device for measurement and display of physiological parameters o

Details Device for measurement and display of physiological parameters o Device for measurement and display of physiological parameters o

1990-11-28

1992-04-14

Jaworski, Francis

Surgery

Truss

Pad

12866109, 7386125, A61B 802

Patent

active

051038269

ABSTRACT:
A device for the measurement and display of physiological parameters of a blood flow (10), comprising a unit (300) for measuring, using ultrasonic echography, the speed V(t,z) of blood flow as a function of time t and scanning depth z. The measurement of the speed V(t,z) is independent of the frequency of the ultrasonic wave used. The device for measurment and display comprises, connected to an output of a first memory (304) for storing speed values V(t,z), a multiplexer (401) which writes, for a given instant t, the number N.sub.i (t) of measurement samples having the value V.sub.i to within .DELTA.V, .DELTA.V being the discretization step, into a register i of a second memory (402) and a device (403) for displaying the speed as a function of time, such that the brightness at the point (Vi,t) is proportional to N.sub.i (t).

REFERENCES:
patent: 4803990 (1989-02-01), Bonnefous et al.
patent: 4840180 (1989-06-01), Ito et al.
patent: 4853904 (1989-08-01), Pesque
patent: 5010528 (1991-04-01), Ohtsuki et al.
patent: 5031628 (1991-07-01), Nakamura et al.

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