An intravascular catheter for nerve modulation through the wall of a blood vessel, comprising an shaft having a proximal end and a distal end and a central axis, a balloon disposed on the shaft and having a proximal end, a distal end, an interior surface, and exterior surface, a lumen defined by the interior surface, a plurality of electrodes disposed on the balloon, and a plurality of elastomeric members disposed between the plurality of electrodes and the balloon and extending between the proximal end of the balloon and the distal end of the balloon.
