connected to one of the bundle of lead wires 70 each wire in the bundle of lead wire 70 extends from the control handle 36 through the lumen 58 in the proximal section 32 and through one of lumens 58 a or 58 b in distal section 34 to tip electrode 38 and optional ring electrode or electrodes 40 the proximal end of each lead wire 70 is connected to an appropriate connector not shown in the control handle 36 which can be connected to a suitable source of rf energy or to an ep mapping or other diagnostic or therapeutic system irrigation lumen 90 provides a conduit for transporting fluid from the proximal end of the catheter to the distal tip portion 34 irrigation lumen 90 is in fluid communication with one or more fluid ports in the tip electrode 38 fig4 and 5 depict on possible arrangement of irrigation fluid ports 439 in a tip electrode irrigation lumen 90 is used to transport an irrigation fluid through the catheter and out through the fluid ports in the tip in order to reduce coagulation of bodily fluids such as blood at or near the tip electrode in a bi directional catheter a pair of puller wires 44 a and 44 b extend through the through lumen 58 in the proximal section 32 and.