ULTRASONIC SURGICAL INSTRUMENT WITH MODULATOR

摘要

A surgical instrument includes a transducer (14) configured to produce vibrations along a longitudinal axis at a predetermined frequency. An end effector (50) is adapted to couple to the transducer and extends along the longitudinal axis. The end effector includes a body having a proximal end and a distal end. The distal end is movable relative to the longitudinal axis by the vibrations produced by the transducer. A drive module (600) is coupled to the transducer to generate a modulated drive signal. The distal end of the end effector is movable in response to the vibrations produced by the transducer in response to the modulated drive signal.