Surgery – Truss – Pad
Patent
1978-11-01
1981-08-04
Michell, Robert W.
Surgery
Truss
Pad
73644, A61B 1000
Patent
active
042816610
ABSTRACT:
Medical echo sounding apparatus of the sector scanner type in which the coupling liquid between the ultrasonic transmitting-receiving head and the medium being examined results in a speed of propagation of the ultrasonic radiation which is substantially less than the speed of propagation in the medium being examined. For use in obstetrics and cardiology and for the construction of sounding heads of small dimension.
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patent: 3168659 (1965-02-01), Bayre et al.
patent: 3387604 (1868-06-01), Erikson
patent: 3687219 (1972-08-01), Langlois
patent: 3927557 (1975-12-01), Viertl
patent: 3996792 (1976-12-01), Kubota et al.
patent: 4084582 (1978-04-01), Nigam
patent: 4143554 (1979-03-01), Nagy et al.
Knollman, G. C. et al., "Variable-Focus Liquid-Filled Hydro-Acoustic Lens," Journ. Acoust. Soc. of Amer., Vol. 49 No. 1, Part II.
Handbook of Chemistry & Physics, CRC Publ. pp. 253-255, 1964 p. E-28.
C. G. R.-Ultrasonic
Drucker William A.
Jaworski Francis J.
Michell Robert W.
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