Patent ID: 8157796

Claim:
A medical device for electrophysiology procedures, comprising: a catheter shaft; a braided conductive member having a first end and a second end, and comprising a plurality of interlaced filaments; and an actuator; wherein the first end of the braided conductive member is attached to the actuator; the second end of the braided conductive member is attached to the catheter shaft; the braided conductive member has a deployed position and an undeployed position; the actuator is movable relative to the catheter shaft to move the braided conductive member between the deployed position and the undeployed position; in the deployed position, a portion of the braided conductive member is inverted within itself and the inverted braided conductive member forms a ring-shaped distally-facing surface configured to contact a tissue surface; and in the deployed position, the moveable actuator is positioned proximal to the ring-shaped distally-facing surface of the braided conductive member.