It should be appreciated that the energy delivery member 120 can have any other cross-sectional shape, such as oval or rectangular. [0052] In the exemplary embodiment of FIG. 3, the engagement surface or plane 125 that delivers energy to tissue extends an axial length L (from proximal surface end 126 a to distal surface end 126 b) along the member 120 as well as 360??? around the circumference of