Ultrasound system with improved coupling fluid

Details Ultrasound system with improved coupling fluid Ultrasound system with improved coupling fluid

1989-11-13

1991-10-01

Jaworski, Francis

Surgery

Truss

Pad

1286601, 73644, A61B 800

Patent

active

050523937

ABSTRACT:
An ultrasound system, employable for medical imaging, includes an electronics module and a probe. The probe includes a body, a transducer, a driver, a window and coupling fluid. The electronics module includes a transmitter which generates transmission pulses which are converted by the transducer to ultrasound pulses and a receiver which analyzes electrical signals resulting from the conversion of ultrasonic reflections received by the transducer. The electronics module controls delays in the transmission and reception between individual elements of the annular phased array transducer to control focussing. The driver provides for mechanical steering of the transducer. The coupling fluid provides for ultrasonic coupling between the transducer and the window and the subject while permitting the steering movement of the transducer. The coupling fluid is a mixture of 1-Butanol in Glycerol. The attenuation of that mixture can be adjusted without impairing velocity matching by adding suitable amounts of 2-Hydroxyethyl ether.

REFERENCES:
patent: 4194510 (1990-03-01), Proudian
patent: 4277367 (1981-07-01), Madsen et al.
patent: 4653504 (1987-03-01), Kondo et al.
patent: 4722346 (1988-02-01), Chen
Guildford, GB; "Medical Ultrasound Scanning Couplants", p. 54, Col. 2, lines 1-5, Ultrasonics, vol. 18, No. 2, Mar. 1980.
Hitachi K.K., Patent Abstracts of Japan, vol. 7, No. 182, p. 1327, Aug. 11, 1983.

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