Apparatus for fragmentation of a solid body surrounded by a flui

Details Apparatus for fragmentation of a solid body surrounded by a flui Apparatus for fragmentation of a solid body surrounded by a flui

1987-10-08

1990-06-12

Howell, Kyle L.

Surgery

Instruments

Means for concretion removal

606 15, A61B 1722

Patent

active

049329545

ABSTRACT:
An apparatus for the fragmentation of a solid body surrounded by a fluid, in particular in a living being, by means of acoustic shock waves which are induced by the light of a laser. A reflector for acoustic waves focuses the shock waves onto the body. In the region of the reflector, an element is provided which consists of a material absorbing the laser light, and onto which the laser light is directed, so that the plasma state triggering the acoustic shock wave develops at the surface of the element. The apparatus thus has the advantage that even under unfavorable conditions acoustic shock waves can be generated with certainty at every laser pulse.

REFERENCES:
patent: 3902499 (1975-09-01), Shene
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patent: 4273109 (1981-06-01), Enderby
patent: 4418688 (1983-12-01), Loeb
patent: 4535771 (1985-08-01), Takayama
patent: 4608979 (1986-09-01), Breidenthal et al.
patent: 4676231 (1987-06-01), Hisazumi et al.
patent: 4694828 (1987-09-01), Eichenbaum
Fair, Harry D., Jr., In Vitro Destruction of Urinary Calculi . . . , Med. Instr., vol. 12, No. 2, Mar.-Apr. 1978.

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