Acoustic pressure pulse generator

Details Acoustic pressure pulse generator Acoustic pressure pulse generator

1991-09-18

1993-05-04

Smith, Ruth S.

Surgery

Truss

Perineal

367175, A61B 1722

Patent

active

052072150

ABSTRACT:
An acoustic pressure pulse generator has an electrodynamic pressure pulse source formed by a membrane and a coil, so that when the membrane is electrodynamically rapidly repelled from the coil, an acoustic pressure pulse is generated in an acoustic propagation medium adjacent the membrane. A wall is disposed in the pulse generator spaced from the membrane in the direction of pressure pulse propagation, the wall preferably formed as an acoustic lens. The wall defines a space between the wall and the membrane, which is filled with acoustic propagation medium, and which is maintained liquid-tight from a second space situated at the other side of the wall, also containing an acoustic propagation medium. The acoustic propagation medium contained in the first space is maintained at a static pressure which is necessary for returning the membrane to its initial position after being repelled by the coil. The propagation medium contained in the first space can be maintained pressurized by flowing through a circulatory system which is also used for cooling that acoustic propagation medium.

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patent: 5046483 (1991-09-01), Ogura
patent: 5095907 (1992-03-01), Kudo et al.

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