Design of an optimized high-power ultrasonic transducer

Author

Mühlen, Sérgio S.

Author_Institution

Dept. de Engenharia Biomedica, Univ. Estadual do Campinas, Brazil

fYear

1990

fDate

4-7 Dec 1990

Firstpage

1631

Abstract

The design of an optimized ultrasonic transducer for renal lithotripsy is discussed. The device consists of a concentrator (horn) associated with piezoelectric (PZT) ceramic rings to obtain maximum power transfer to the kidney stones. The transducer works at 31 kHz, and the vibratory amplitude measured on the application tip is 0.12 mm. The theoretical modeling of the horn is discussed, considering the propagation of mechanical waves in solids, with specific boundary conditions. The choice of materials and the technological aspects concerning assembly, insulation, and cooling are considered. The equivalent electrical circuit is studied and the impedance curve plotted in order to design the electronic driver

Keywords

biomedical equipment; biomedical ultrasonics; kidney; radiation therapy; ultrasonic transducers; 31 kHz; application tip; assembly; boundary conditions; concentrator; cooling; electronic driver; equivalent electrical circuit; horn; impedance curve; insulation; kidney stones; maximum power transfer; mechanical wave propagation; optimized high-power ultrasonic transducer; piezoelectric ceramic rings; renal lithotripsy; theoretical modeling; therapeutic ultrasound; vibratory amplitude; Assembly; Boundary conditions; Ceramics; Design optimization; Lithotripsy; Piezoelectric transducers; Solid modeling; Ultrasonic transducers; Ultrasonic variables measurement; Vibration measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171645

Filename

171645