Patent ID: 7122033

Claim:
A device, comprising: a substantially tubular catheter comprising a nonconductive material, the catheter defining a catheter lumen in communication with both a proximal catheter opening and a distal catheter opening; an electrode having a proximal electrode end and a distal electrode end, the electrode having a non-deployed state inside the catheter lumen in which the catheter substantially surrounds the electrode, and the electrode having a deployed state in which the distal electrode end, after being advanced through the distal catheter opening, substantially conforms to an inner surface of a hollow organ lumen of a subject, the electrode comprising a first section substantially surrounding a second section, wherein the first section and the second section are slidable relative to one another, the electrode further comprising two or more electrode struts attached to the second section at a distal approximation point and to the first section at a proximal approximation point; and a source of radiofrequency energy electrically connected to the electrode and capable of delivering a therapeutically effective amount of radiofrequency energy to the electrode.