Ultrasonic equipment

Details Ultrasonic equipment Ultrasonic equipment

1995-03-03

1996-07-16

Jaworski, Francis

Surgery

Truss

Pad

12866108, A61B 800, A61B 806

Patent

active

055357474

ABSTRACT:
The ultrasonic apparatus has a transmitter for transmitting an ultrasonic wave filled with a fluid from the outside of a pipe, a receiver for receiving echo signals from the inside of the pipe, a pulse wave propagation time measuring instrument for estimating a propagation time of a pulse wave between a plurality of measurement points within the tube on the basis of the echo signals from the measurement points, a pulse wave velocity estimator for estimating a speed of the pulse wave from the propagation time of the pulse wave and the distance between the measurement points, a flow speed estimator for measuring a flow speed of the fluid within the pipe, and a pressure estimator for measuring a pressure of the fluid within the pipe at a particular time, whereby the absolute value of a pressure at another time different from the particular time is estimated from the flow speed of the fluid within the pipe which is produced from the flow speed estimator and the pressure of the fluid at the particular time which is produced from the pressure estimator.

REFERENCES:
patent: 3640271 (1972-02-01), Horton
patent: 4483345 (1984-11-01), Miwa
patent: 5411028 (1995-05-01), Bonnefous
patent: 5450850 (1995-09-01), Iinuma

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