Patent ID: 8647298

Claim:
A surgical apparatus comprising an expandable structure including first, second and third spines forming a basket, the basket movable between expanded and contracted positions, each of the spines having first, second and third lumens, an electrode element having a distal end, the electrode element movable within the first lumen of the first, second and third spines from a first retracted position to a second extended position wherein the distal end of the electrode element extends outwardly from the spine, the distal end including a piercing tip, the electrode element extending through a first opening in the spine, the first opening communicating with the first lumen, the second lumen of the first and second spines carrying a temperature sensing element, the temperature sensing element exposed through a second opening in the spine, the second opening positioned between the first and second lumens, the second lumen of the third spine configured to receive a guidewire, and the third lumen of the first, second and third spines connectable to a tube for carrying cooling fluid therethrough.