Patent ID: 7039450

Claim:
A catheter comprising: an elongated catheter body having a proximal end, a distal end and a lumen extending longitudinally therethrough; a control handle attached to the proximal end of the catheter body, the control handle including first and second members that are moveable relative to each other, the second member being attached to the catheter body; an inner member slidably mounted in the lumen of the catheter body, the inner member having proximal and distal ends and comprising an elongated stiffening member and a non-conductive cover surrounding the stiffening member, the inner member having a free distal end on which is mounted one or more electrodes, the catheter body comprising a non-conductive sleeve mounted in the lumen of the catheter body, wherein the inner member extends through the non-conductive sleeve; wherein the proximal end of the inner member is attached to the first member of the control handle; and wherein longitudinal movement of the first member of the control handle relative to the second member of the control handle results in longitudinal movement of the inner member relative to the catheter body to cause the inner member to extend out of or retract into the catheter body.