Unfurling electrode devices with spring

摘要: Methods, systems, and devices for providing treatment to a tissue in body lumens are described. The system may include catheter, an expansion member coupled with distal portion of the ablation structure including one or more longitudinal electrode segments, support configured at least partially unfurl as expands furl contracts. multiple separately wired and/or controlled electrodes, zones, both, such that each zone be selectively enabled disabled. In some instances, springs promote around member. protection elements positioned along catheter.