Sensor for acoustic shockwave pulses

Details Sensor for acoustic shockwave pulses Sensor for acoustic shockwave pulses

1987-07-29

1989-02-07

Tokar, Michael J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

73632, 367167, 310337, 310800, H01L 4104

Patent

active

048036714

ABSTRACT:
A sensor for acoustic shockwave pulses, such as in lithotripsy, includes a piezo-electric measuring membrane disposed between two coupling membranes. The intervening space between the coupling membranes is filled with a coupling medium for transmitting the acoustic shockwave pulses. The measuring membrane is in a defined condition largely independent of external influences so that flows in the coupling medium or different pressure exertions on the two coupling membranes do not influence the measured signal produced by the measuring membrane.

REFERENCES:
patent: 2545101 (1951-03-01), Meunier
patent: 4178577 (1979-12-01), Cini et al.
patent: 4433400 (1984-02-01), DeReggi et al.
patent: 4474184 (1984-10-01), Harui
patent: 4653036 (1987-03-01), Harris et al.
patent: 4734611 (1988-03-01), Granz
Article by Von M.-Mueller from Acoustica, Sep. 1985, No. 4, Stuttgart, Deutschland.
DeReggi, A. S. et al., "Piezoelectric Polymer Probe for Ultrasonic Applications", J. Acoust. Soc. Am., 69(3), Mar. 1981.
Shotton, K. C. et al., "A PVDF Membrane Hydrophone for Operation in the Range of OSMHz to ISMHz", Ultrasonics (May 1980), vol. 18, No. 3.
Sullivan, T. D. et al., "Piezoelectric Polymer Flexural Disk Hydrophone", J. Acoust. Soc. Am., 63(5), May 1978.

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