Patent ID: 8588885

Claim:
A catheter, the catheter comprising: an elongated body having a proximal end and a distal end; and an electrode assembly at the distal end of the elongated body, the electrode assembly comprising a plurality of arms, each of the arms having a proximal end connected to the distal end of the elongated body and a distal end, the distal ends of the arms being connected at a tip junction, wherein the electrode assembly is collapsible to a collapsed arrangement to fit within a lumen of a shaft and is expandable to an expanded arrangement; wherein at least one arm of the plurality of arms comprises: a shell; at least one electrode; and a support member disposed within the shell, the support member comprising a distal portion, a proximal portion, and an intermediate portion therebetween, wherein one of the distal and proximal portions define a first width and the intermediate portion defines a second width, and wherein the first width is greater than the second width.