Patent ID: 7087061
Filing Date: 2006-08-08
Classification: A61B

Abstract:
1. A method for fragmenting of various calculi in a living body by intracorporeal lithotripsy treatment, during which a probe is brought to the calculus to be fragmented, said probe is provided with electrodes, connected to a means for generating of high voltage impulses, said impulses are supplied to the electrodes for igniting spark discharge between them and release of energy, causing fragmenting of the calculus, wherein the method comprises bringing of at least one of the electrodes in electrical contact immediate with the calculus so as to establish a discharge channel capable to create shock waves and stresses, which excess the strength of the calculus material, wherein said high voltage impulses are defined by the following parameters: impulse rise time t f less than 50 nanoseconds, duration of impulse itself t i not more than 5000 nanoseconds, impulse energy W O =0.1–1.0 joule, impulse amplitude U=5–20 kV.