A method of forming a composite lesion pattern in a tissue region at or near a
sphincter comprising providing a catheter having a plurality of energy delivery
devices coupled to the catheter. The catheter is introduced at least partially
into the sphincter. Energy is delivered from the energy delivery devices to produce
the composite lesion pattern. The composite lesion pattern comprises a radial distribution
of lesions about the tissue region and a longitudinal distribution of lesions along
the tissue region.