Electrosurgical medical system and method

A method for mitigating leakage in an RF electrosurgical generator, comprising:

• delivering an RF signal from an RF electrosurgical generator to an electrosurgical electrode by way of a patient box, said RF electrosurgical generator including an RF amplifier;
• providing a balanced and symmetrical shielded transmission line coupling said RF electrosurgical generator disposed in a first housing to said patient box disposed in a second, different housing;
• providing a common mode choke in said patient box, said common mode choke including an output winding and a return winding, each of said output winding and said return winding wound about a ferrite core, said output winding and said return winding spaced apart and in parallel to maintain a desired impedance, said output winding comprising a wire carrying said RF signal as an output signal and said return winding comprising a duality of intertwined wires carrying a return signal from a return electrode, each of said output winding and said return winding having adjacent ribs spaced apart;
• and
• directing a common mode signal from said RF signal to said common mode choke thereby blocking said common mode signal.