Piezoelectric transducer for destruction of concretions inside t

Details Piezoelectric transducer for destruction of concretions inside t Piezoelectric transducer for destruction of concretions inside t

1987-06-15

1988-01-26

Coughenour, Clyde I.

Surgery

Truss

Pad

128 24A, 310327, 367176, 604 22, A61B 1700, A61H 2302

Patent

active

047211067

ABSTRACT:
A piezoelectric transducer for destruction of concretions inside the body. The transducer essentially comprises a spheroidal cap having piezoelectric ceramic elements situated at its radially inner front side. To prevent overpressure pulses radiated at the front side of the transducer being followed by underpressure pulse reflected from the rear side of the cap, the cap is produced from metal, preferably from a copper alloy. The impact wave resistances of the cap metal and of the ceramic material should largely correspond. Furthermore, the rear-side surface of the rear wall of the cap is so shaped geometrically and/or provided with a coating, that the sonic waves reflected therefrom are no longer focussed.

REFERENCES:
patent: 2416337 (1947-02-01), Mason
patent: 2707755 (1955-05-01), Hardie
patent: 2728869 (1955-12-01), Pohlman
patent: 2946904 (1960-07-01), Renaut
patent: 2972068 (1961-02-01), Howry
patent: 2984756 (1961-05-01), Bradfield
patent: 3038551 (1962-06-01), McCoy
patent: 3403271 (1968-09-01), Lobdell
patent: 3876890 (1975-04-01), Brown
patent: 3995179 (1976-11-01), Flournoy
patent: 4382201 (1983-05-01), Trzaskos
patent: 4528652 (1985-07-01), Horner
Methods of Experimental Physics, vol. 19, Ultrasonics, Peter D. Edmonds (ed.), Academic Press 1981, Chapter 1, Piezoelectric Transducers, pp. 62-64.
Textbook "Werkstoffprufung mit Ultraschall" (Material Testing with Ultrasound) by Josef and Herbert Krautkramer, Third Revised Printing, Springer-Verlag Berlin, Heidelberg, New York, 197r, pp. 71, 218, and 219.
Book "Ultrasound: Its Application in Medicine and Biology", Part 1 (ed. F. J. Fry), Amsterdam 1978, pp. 289, 325, 337, 338.
Ultrasonics, Jul. 1974, pp. 161-167, article by A. F. Brown and J. P. Weight with the title "Generation and Reception of Wideband Ultrasound".
Research report Forschungsbericht T 84-055 of the Federal Ministry for Research and Technology, Apr. 1984, pp. 1-15, in particular p. 13, last paragraph.

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