DEVICE FOR FORMING ACOUSTIC WAVES FOR LITHOTRIPTOR

摘要

FIELD: medical engineering. SUBSTANCE: device has piezoelectric units arranged along radiating reflector perimeter, immersed into liquid and connected to electronic control unit of pulse setter. Acoustic transducer of the pulse setter unit and piezoelectric unit concentrating members are directed into the reflector focus. Each piezoelectric unit is manufactured as flat metal-coated piezoceramic plate. Excitation and concentrating conductors are itched in its metal coating. Depth and topology of the itched pattern corresponds to radiated frequency being not lower than <EMI ID=0.75 HE=6 WI=9 TI=CHI> Hz. Controllable discrete delay line with decoder changes feeding pulse delay time of each piezoelectric member and allows to control acoustic grain form in the device focus. EFFECT: enhanced effectiveness of treatment. 3 cl, 3 dwgc