Variable energy shock wave production

Details Variable energy shock wave production Variable energy shock wave production

1990-10-16

1992-09-15

Howell, Kyle L.

Surgery

Truss

Perineal

367147, A61B 1722

Patent

active

051469120

ABSTRACT:
An arrangement for the comminution of concrements of various kinds in the body of living being, uses an underwater or submerged arc gap with spark discharge, and an electrical energizing circuitry for that arc gap, a plurality of electrode assemblies from which one is selected to be used in the equipment is connected to the energizing circuit; the electrode assemblies are basically similarly configured and each has an ohmic resistor which is connected directly in series with one of the electrodes, the resistance value for the resistors in the electrode assemblies of the plurality are different, and in each instance much lower than the resistance of the unignited gap, but of comparable magnitude with the resistance of a fully developed plasma channel in the gap following ignition by the energizing circuit.

REFERENCES:
patent: 4809682 (1989-03-01), Forssmann et al.
"ESWL-New Aspects in the Treatment of the Disease", Chauss, C. H., et al., Karger, A. G., Germany, 1982, pp. 10-11.

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