ULTRASONIC SURGICAL TOOL CAPABLE OF VIBRATING IN PLURAL MODES AND A DRIVE SYSTEM THAT INDUCES NON-LINEAR VIBRATIONS IN THE TOOL TIP

摘要

An ultrasonic surgical tool system (3) with a tip capable of simultaneously vibrating in plural modes. The system includes a console (24) capable of supplying a drive signal to the tip that includes plural components. Each component has a frequency characteristic that is based in part on the equivalent of current through the mechanical components of the tip. The frequency components are different from each other. Based on the application of drive signal the tip undergoes non-linear vibrations.