An ablation catheter including a handle, a tubular irrigation member defining a fluid lumen and having a plurality of perforations proximal the distal end of the tubular irrigation member. At least one ablation electrode is arranged at the distal end of an elongate tubular sheath inserted into the lumen of the tubular irrigation member, the elongate tubular sheath being axially displaceable within the lumen of the tubular irrigation member. The ablation catheter may also include two ablation electrodes each attached to an elongate tubuar sheath which are telescopically arranged within the tubular irrigation member. The ablation electrodes may be displaceable simultaneously together or individually.
