Device and method for producing high-pressure ultrasonic pulses

Details Device and method for producing high-pressure ultrasonic pulses Device and method for producing high-pressure ultrasonic pulses

2007-09-04

2007-09-04

Casler, Brian L. (Department: 3737)

Surgery: kinesitherapy

Kinesitherapy

Contact-free comminution of concretion

C600S459000, C600S437000, C367S157000

Reexamination Certificate

active

10491480

ABSTRACT:
A device for producing high pressure ultrasound pulses. The device includes an ultrasound source having a piezoelectric transducer provided with electrodes and presenting polarization in a given direction (f1). An electrical voltage is applied to the electrodes to emit an ultrasound wave and to apply an electric field in a direction (f2) opposite to the polarization direction (f1) in order to compress the ultrasound transducer. A transient electric field having the same direction (f3) as the polarization direction (f1) is then applied so as to cause a compression ultrasound wave to be emitted in the coupling medium.

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patent: 2001/0001603 (2001-05-01), Fink et al.
patent: 197 33 233 (1998-09-01), None
Patent Abstracts of Japan, vol. 013, No. 472, Oct. 25, 1989.

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