Surgery: kinesitherapy – Kinesitherapy – Contact-free comminution of concretion
Patent
1992-02-04
1994-09-27
Smith, Ruth S.
Surgery: kinesitherapy
Kinesitherapy
Contact-free comminution of concretion
367175, A61B 1722
Patent
active
053503520
ABSTRACT:
A pressure pulse generator has a pressure pulse source with a membrane that is rapidly displaceable from an initial position for generating acoustic pressure pulses in an acoustic propagation medium. For returning the membrane to its initial position, the acoustic propagation medium adjoining the membrane is maintained at an elevated static pressure in comparison to the ambient pressure. Additionally, a cooling arrangement for the pressure pulse source is provided for eliminating the dissipated heat arising during operation of the pressure pulse source. The cooling system contains a coolant that flows in a closed circulation path through a channel integrated into the pressure pulse source and through a cooling unit.
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patent: 4901709 (1990-02-01), Rattner
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patent: 4977888 (1990-12-01), Rietter et al.
patent: 5165388 (1992-11-01), Hartinger
patent: 5207215 (1993-05-01), Rattner et al.
Buchholtz Gerhard
Mahler Matthias
Siemens Aktiengesellschaft
Smith Ruth S.
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