Patent ID: 6511444
Filing Date: 2003-01-28
Classification: A61B

Abstract:
An ultrasonic system for selectively and non-invasively vaporizing body tissue, the system comprising:an extracorporeal array of ultrasonic transducers, each of said transducers being capable of producing an ultrasonic wave; and a plurality of channel driving systems, each of said channel driving systems being coupled to one of said transducers and providing an output signal having an amplitude and a phase to a corresponding one of said transducers, each of said channel driving systems including at least one of a power measurement system and a phase detector for providing measured values of a respective one of said amplitude and said phase of said output signal, each of said channel driving systems adjusting said corresponding output signal based on a pre-selected value of said output signal and the measured value of said output signal to selectively vaporize said body tissue.