Compact delivery pulmonary treatment systems and methods for improving pulmonary function

A pulmonary treatment system, comprising:

• a nerve modification assembly configured to assume a reduced profile for passage through a lumen of an elongate device and positioning in an airway of a patient, the lumen having a diameter less than about 6.0 millimeters, and configured to assume a treatment configuration for treatment of the airway, the nerve modification assembly including:
• an energy delivery portion configured to generate heat energy in an airway wall of the airway to ablate nerve tissue along the airway, and
• a cooling portion configured to remove heat energy from the airway wall while heat energy is generated in the airway wall by the energy delivery portion, wherein the cooling portion includes an inflatable member and a fluid delivery conduit that extends at least partially around a circumference of the inflatable member when the nerve modification assembly is in the treatment configuration,
• wherein the energy delivery member includes an elongate electrode coupled to a portion of the fluid delivery conduit, the electrode being arcuate and flexible, the electrode including:
• a tissue facing side, the tissue facing side being convex and electrically conductive,
• an inflatable member facing side joined to the tissue facing side, and
• an electrically insulating mask adhered to, partially covering, and confined to the tissue facing side, the electrically insulating mask being convex and flexible, the electrically insulating mask thereby defining at least one electrically conductive tissue contact region along the tissue facing side, and at least one electrically insulating tissue contact region bound within the tissue facing side of the energy delivery member.