A tissue ablation device includes a first longitudinal member having a first end configured to be coupled to an energy generator and a second end comprising a first plurality of electrodes that are expandable about a central axis of the first longitudinal member. A second longitudinal member having a first end configured to be coupled to the energy generator and a second end comprising at least one electrode is nested within the first longitudinal member. A method of ablating a tissue using the tissue ablation device is also disclosed.
