Shock wave generating system capable of forming wide concretion-

Details Shock wave generating system capable of forming wide concretion- Shock wave generating system capable of forming wide concretion-

1994-10-13

1996-06-11

Smith, Ruth S.

Surgery

Truss

Pad

601 3, 601 4, 607 97, A61B 1722

Patent

active

055246257

ABSTRACT:
In a shock wave generating system, a width of a focused region synthesized from a plurality of focal points formed by a plurality of shock waves is varied by properly controlling delay times and/or drive voltages for a plurality of ring-shaped piezoelectric transducer elements. The shock wave generating system includes a shock wave generating unit having a plurality of shock-wave generating elements and a driving unit for separately driving the plurality of shock-wave generating elements by controlling at least delay times to produce a plurality of shock waves in such a manner that a dimension of a focused region synthesized from a plurality of different focal points formed by the plurality of shock waves, is varied in accordance with a dimension of a concretion to be disintegrated which is present in a biological body under medical examination.

REFERENCES:
patent: 4955366 (1990-09-01), Uchiyama et al.
patent: 5062412 (1991-11-01), Okazaki
patent: 5103805 (1992-04-01), Okazaki
patent: 5203333 (1993-04-01), Nomura
patent: 5207214 (1993-05-01), Romano

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