Ablation system, methods, and controllers

A method of operating a multi-electrode ablation system, the method comprising:

• comparing a measured temperature at each electrode to a desired temperature to thereby define a temperature difference for each electrode;
• determining, based on said temperature difference, a desired power to be delivered to each electrode;
• comparing the desired power to be delivered to one of the electrodes to an actual power delivered to said one of the electrodes to define a power difference;
• and
• adjusting, based on the power difference, the actual power delivered to said one of the electrodes.

A multi-electrode ablation system comprising:

• a power supply configured to be coupled to a plurality of electrodes;
• and
• a controller coupled to the power supply, the controller configured to:
• determine an amount of energy to be dissipated through each electrode of the plurality of electrodes during an output cycle, the electrode having the greatest energy to be dissipated defining a highest demand electrode of the system;
• determine an output voltage of the power supply that will provide the determined energy dissipation through the highest demand electrode;
• couple the determined output voltage from the power supply to all of the electrodes;
• and
• maintain coupling of the determined output voltage to the highest demand electrode until an end of the output cycle.

A method of operating a multi-electrode ablation system comprising a plurality of electrodes and a power supply configured to be coupled to the plurality of electrodes, the method comprising:

• determining an amount of energy to be dissipated through each electrode of the plurality of electrodes in an output cycle, the electrode having the greatest energy to be dissipated defining a highest demand electrode of the system;
• determining an output voltage of the power supply that will provide the determined energy dissipation through the highest demand electrode;
• coupling the determined output voltage from the power supply to all of the electrodes;
• and
• maintaining coupling of the determined output voltage to the highest demand electrode until an end of the output cycle.

A multi-electrode ablation system comprising:

• a power supply configured to be coupled to a plurality of electrodes;
• and
• a controller coupled to the power supply, the controller configured to:
• determine, for each electrode of the plurality of electrodes, an amount of energy to be dissipated through each electrode of the plurality of electrode during an output cycle;
• couple an output voltage of the power supply to all electrodes of the plurality of electrodes;
• determine an amount of energy dissipated through each electrode during the output cycle;
• and
• until a last electrode remains coupled to the output voltage, sequentially decouple each electrode from the output voltage of the power supply at a respective time when the amount of energy dissipated through said electrode substantially equals the determined amount of energy to be dissipated through said electrode during the output cycle.