Some embodiments are directed to medical devices and methods for making and using the medical devices. An exemplary medical device includes a catheter having an elongated shaft and an inflatable balloon mounted at or on a distal portion of the elongated shaft. The catheter further includes a first electrically conductive blade, and a second electrically conductive blade. Each blade may be configured to contact tissue upon inflation of the balloon. The blades may contact the tissue with reduced or minimal incising of the tissue, or even without incising the tissue, within a body lumen. Thermal energy may be applied to the tissue upon electrical energy being applied to the respective blades.