An ablation device includes a needle extending from a proximal end which, during use, remains outside a body accessible to a user to a tissue penetrating distal tip, the needle defining a lumen extending therethrough to a distal end of the needle. The ablation device also includes a first ablation electrode mounted on a distal portion of the needle in combination with an inner tube received within the lumen of the needle separating the lumen of the needle into an inner cooling fluid supply lumen and an annular fluid return lumen. In addition, the ablation device includes a source of cooling fluid supplying cooling fluid to the cooling fluid supply lumen and withdrawing fluid from the fluid return lumen to remove heat from the first electrode to maintain a temperature of the first electrode below a predetermined threshold temperature.
