Method of treating the inner lining of an organ using a bipolar electrosurgical instrument including a plurality of balloon electrodes

A method of heating the inner lining of a lumen or cavity of a patient, said method comprising comprises the steps of:

• providing a bipolar electrosurgical instrument comprising:
• a flexible elongated tube having a proximal and a distal end;
• a first balloon electrode attached to said distal end of said flexible
• elongated tube wherein said first balloon electrode comprises:
• a first expandable sleeve formed from an electrically insulating material;
• a first electrically conductive fluid in said expandable sleeve;
• a first electrode in electrical contact with said first electrically conductive fluid;
• a return balloon electrode spaced proximally from said first balloon electrode, wherein said return balloon electrode comprises:
• a second expandable sleeve formed from an electrically insulating material;
• a second electrically conductive fluid disposed within said second expandable sleeve;
• and
• a return electrode in electrical contact with said second electrically conductive fluid;
• placing said first balloon electrode and said return balloon electrode into contact with the inner lining of said lumen or cavity;
• positioning said return balloon electrode proximal to said first balloon electrode;
• and
• connecting said first electrode and said return electrode to a source of bipolar energy.