A surgical system that applies electrical energy to obtain predetermined
surgical effects while improving the control of the application of the
energy that is supplied by electrosurgical generators. In one embodiment,
a surgical assembly interfaces with and receives power from an
electrosurgical generator for executing a first electrosurgical
procedure. This surgical assembly may employ a shunt circuit between its
power and return lines for providing in effect a voltage limitation
and/or to allow a constant power electrosurgical generator to execute an
at least substantially constant voltage electrosurgical technique. The
electrosurgical assembly may also include a return coupler for directing
energy from the patient back to the electrosurgical generator, which in
turn may include a dielectric material which interfaces with the patient
and which at least initially conveys the return energy via one or more
electric fields versus conduction.