Method for the comminution of concretions

Details Method for the comminution of concretions Method for the comminution of concretions

1995-08-01

1996-12-10

Lateef, Marvin M.

Surgery: kinesitherapy

Kinesitherapy

Contact-free comminution of concretion

12866003, 601 2, 604 22, A61B 1722

Patent

active

055825788

ABSTRACT:
The invention relates to a method for the comminution of concretions in vivo by controlled, concentrated cavitation energy. This method utilizes two shock wave pulses with a specified time delay and pressure relationship, with the first shock wave pulse being used to induce a transient cavitation bubble cluster near the target concretion, and the second shock wave pulse to control and force the collapse of the cavitation bubble cluster towards the target concretion with concentrated energy deposition, while avoiding injury to surrounding tissue caused by random collapse of the cavitation bubbles. This invention makes it possible to significantly enhance the fragmentation efficiency of the concretion using shock waves while reducing potential deleterious injury to surrounding tissue.

REFERENCES:
patent: 3942531 (1976-03-01), Hoff et al.
patent: 4655220 (1987-04-01), Hahn et al.
patent: 4664111 (1987-05-01), Reichenberger
patent: 4821730 (1989-04-01), Wurster et al.
patent: 4888746 (1989-12-01), Wurster et al.
patent: 5209221 (1993-05-01), Riedlinger
patent: 5219401 (1993-06-01), Cathignol et al.

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