Medical devices for renal nerve ablation having rotatable shafts

A medical device for renal denervation may include a catheter shaft including an outer shaft having a lumen formed therein and an inner shaft extending within the lumen of the outer shaft. The catheter may further include an expandable member having a proximal region coupled to a distal region of the outer shaft, and a distal region of the expandable member may be coupled to a distal region of the inner shaft. In some embodiments, one or more active electrodes may be disposed on an exterior surface of the expandable member and capable of providing the renal denervation treatment. In some embodiments, the inner shaft may be rotatable in relation to the outer shaft and/or the outer shaft may be rotatable in relation to the inner shaft.