Electrosurgical systems and methods

A system comprising:

• an electrosurgical controller comprising a processor;
• a memory coupled to the processor;
• a voltage generator operatively coupled to the processor, the voltage generator comprising an active terminal;
• a variable aspiration control system for controlling an aspiration flow rate through an aspiration conduit operatively coupled thereto, the variable aspiration control system operatively coupled to the processor;
• an electrosurgical wand comprising an elongate shaft that defines a proximal end and a distal end;
• a first active electrode disposed on the distal end of the elongate shaft;
• wherein the memory stores a program that, when executed by the processor, causes the processor to implement at least two modes of ablation during an electrosurgical procedure, the implementing with the first active electrode of the electrosurgical wand;
• wherein when the program implements the at least two modes, the program causes the processor to:
• control impedance of an electrode circuit during a first mode of ablation of an electrosurgical procedure;
• and
• then control impedance of the electrode circuit during a second mode of ablation of the electrosurgical procedure, the impedance of the electrode circuit during the second mode different than the impedance of the electrode circuit during the first mode.