Tissue ablation devices and methods for using tissue ablation devices are disclosed. A tissue ablation device may include an elongate guide member having a distal section defined by a sidewall defining a lumen and having a plurality of openings. The distal section may have a helical shape in a released configuration. The tissue ablation device also may include an electrode having a distal end slideable within the distal section of the guide member. The electrode catheter may have an ablation element disposed thereon.
