An electromagnetic generator of focused shock waves with a coaxial radiator excited by the axial current

The device hereafter described forms focused acoustic pressure pulses excit ed by a pulsed magnetic field affecting a cylindrical shell. A specific fea ture of the instrument is its coaxial radiator connected to a capacitive st orage through a pulse transformer with a single-turn secondary winding that is used to excite the acoustic pulse. Design versions of the coaxial radia tor are considered and estimates for setting design parameters are presente d along with the test results obtained on a prototype model. The device can be used in shock-wave medical apparatuses for fragmentation of nephroliths and gall-stones.