Fernández EF, Mehling LAM, Zendejas MH, Tostado CE, Paredes SMI

Language: Spanish
References: 24
Page: 7-15
PDF size: 238.35 Kb.

ABSTRACT

The design and performance of a novel shock wave generator for extracorporeal lithotripsy is described. This system is capable of producing two shock waves with an adjustable time delay between 50 and 950 msec, in order to increase acoustic cavitation and produce more damage to kidney stones. The objective is to reduce treatment time without increasing tissue trauma. Pressure measurements were recorded and kidney stone fragmentation efficiency was obtained in vitro at different time delays. New Zealand rabbits were used to compare tissue damage produced by the novel device with that generated by a standard system. According to our results with this dual-pulse shock wave generator, enhanced fragmentation is possible without increasing tissue damage. This type of generator could be installed in extracorporeal lithotripters at relatively low cost, however, more in vivo experiments are needed before clinical application.

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