Abstract: A method of removing concretions from the ureter which comprises passing a concretion from the ureter into the bladder by means of an extractor having a guiding rod at the end of wire arms, crushing the concretion in the bladder by means of a disintegrating instrument, inserting a catheter into the ureter, and removing concretion fragments after the catheterization is over. The method makes it possible to carry out catheterization after the concretion has been removed and practically allows for elimination of inflammatory diseases caused by damaging the mucous membrance of the urinary tracts.

Abstract: A method and apparatus are provided for disintegrating urniary concretions by subjecting the urinary concretions to ultrasonic forces and electro-hydraulic impacts. For this purpose the apparatus comprises a milling cutter and a discharge arrester alternately inserted into the ureter through a catheter and provided with stops adapted to restrict the axial movement of the milling cutter and the discharge arrester inside the catheter. The method for disintegration of urinary concretions by means of said apparatus includes ultrasonic and electro-hydraulic actions carried out alternatively without withdrawing the catheter from the ureter to completely disintegrate the concretion during one session of treatment.