Patent ID: 8527027

Claim:
A medical device for electrophysiology procedures, comprising: a catheter shaft having a proximal end and a distal end; and a braided conductive member located at the catheter shaft distal end; the braided conductive member having an undeployed configuration in which the braided conductive member has a distal end and is in a longitudinally extended configuration; the braided conductive member further having a deployed configuration in which the braided conductive member distal end is positioned proximally relative to portions of the braided conductive member; and a braided conductive member adjustment element configured to pull the distal end of the braided conductive member in a proximal direction to place the braided conductive member in to the deployed configuration; wherein in the deployed configuration, the braided conductive member forms a distally-facing ring-shaped surface and includes ablation electrodes configured to form an annular lesion in tissue when the distally-facing surface is contacted to the tissue and the ablation electrodes are activated.