Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes for expanding an energy-delivery surface against the patients uterine. A resistively heatable material carried by the energy-delivery surface and an electrical source is operatively coupled to the resistively heatable material such that electrical current provided by the electrical source causes the resistively heatable material to resistively heat.
