Medical devices and methods for making and using medical devices are disclosed. An example medical device may include an ablative catheter system including an elongate member having a proximal end, a distal end, and a lumen extending there between. An end-effector may be disposed at the distal end of the elongate member. The end-effector may include an expandable frame. A membrane may be supported on the frame. The membrane may be configured to partially occlude fluid flow upon frame expansion. One or more electrodes may be placed on the end-effector. The system may also include a control member that is configured to shift the end-effector between a collapsed state and the frame expansion state.