Patent ID: 8435257

Claim:
An ultrasonic surgical handle assembly connectable to a cordless ultrasonic transducer, an ultrasonic waveguide, a battery, and a cordless ultrasonic-signal-generator assembly, the handle assembly comprising: a removable shell containing therein a driving-wave generation circuit; and a handle body having: a power supply portion defining a battery-holding compartment and having at least two battery contacts at the battery-holding compartment; and an ultrasonic-signal-generator assembly dock exposed to the environment and shaped to substantially simultaneously: selectively removably secure the shell directly to the handle body; and electrically couple the driving-wave generation circuit to the at least two battery contacts, wherein the driving-wave generation circuit is operable to dynamically produce a resonant wave along the waveguide by exciting the ultrasonic transducer when the transducer is coupled to the waveguide.