Comminution device null of the kidney calculus by non invasion

摘要

The apparatus for the non-intrusive fragmentation of renal calculi according to the invention comprises at least one ultrasonic receiver-transmitter head (12) focused on the renal calculus (11) to be disintegrated, said head (12) being associated with low-power variable frequency transmitter means (16) and with receiver means (18) to perform a spectral analysis of the characteristic resonance frequencies of the calculus (11) to be disintegrated, and control means (Tx1, OSC1) to cause said transmitter means (16) to emit relatively high-power energy peaks at the characteristic resonance frequencies of said calculus (11) to promote its disintegration.