| 摘要 |
<p>With an ultrasonic oscillator which can be used in a surgical operation, in order to produce the amplitude and power of ultrasonic vibrations capable of providing a sufficient tissue-breaking capacity in the wide range of tissues in a living body, the ultrasonic oscillating unit has a power amplifier regulating the amplitude of its output without moving from the phase of a feedback signal, and a start-impact buffer circuit buffering the impact due to excessive current during the start of the oscillation. An ultrasonic converter (5) has an electrostrictive vibrator and a horn (10) to make it a scalpel unit, and has a suction hole (29) in the horn (10) for cleaning the periphery of the operation area, floating the broken cells and sucking and removing the floating cells. </p> |
