Interchangeable disposable acoustic for use with an ultrasonic f

Details Interchangeable disposable acoustic for use with an ultrasonic f Interchangeable disposable acoustic for use with an ultrasonic f

1994-01-24

1995-11-07

Chilcot, Richard

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

7386128, G01F 166

Patent

active

054639069

ABSTRACT:
An inexpensive disposable plastic flow body interchangeably flow connects in line a conduit flowing fluid, and also, concurrently, acoustically connects to one or more ultrasonic transducers, so as to serve as an acoustic chamber for use with an ultrasonic flowmeter in the measurement of fluid flow velocity and/or volume. The flow connection is preferably accomplished by plugging, preferably by inserting nozzles into surgical tubing. The external ultrasonic transducer(s) is (are) normally connected under pressured contact, typically under spring forces which are preferably of external origin. Acoustic-coupling elements in the walls of the acoustic chamber serve to match the acoustic impedance of the flow body to acoustic impedance of blood. The disposable plug-connected flow body is particularly safe, sterile and convenient for extracorporeal ultrasonic blood flow measurement.

REFERENCES:
patent: 3050997 (1962-08-01), Lake
patent: 3575050 (1971-04-01), Lynnworth
patent: 3964309 (1976-06-01), Husse et al.
patent: 4144752 (1979-03-01), Lolk
patent: 4325262 (1982-04-01), Meisser
patent: 4425804 (1984-01-01), Mount et al.
patent: 4480486 (1984-11-01), Meisser et al.
patent: 5179862 (1993-01-01), Lynnworth
patent: 5243863 (1993-09-01), Gill

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