Irrigated High Density Electrode Catheter

An electrophysiology catheter comprising:

• a flexible tip assembly comprising a first longitudinally extending arm, a second longitudinally extending arm, a third longitudinally extending arm, a fourth longitudinally extending arm, a first distal connective portion, and a second distal connective portion, wherein the first longitudinally extending arm and the second longitudinally extending arm are connected by the first distal connective portion, wherein the third longitudinally extending arm and the fourth longitudinally extending arm are connected by the second distal connective portion, wherein at least a portion of each of the first longitudinally extending arm, the second longitudinally extending arm, the third longitudinally extending arm, and the fourth longitudinally extending arm lie in a common plane, wherein the first longitudinally extending arm comprises a first set of longitudinally distributed electrodes, wherein the second longitudinally extending arm comprises a second set of longitudinally distributed electrodes, wherein the third longitudinally extending arm comprises a third set of longitudinally distributed electrodes, and wherein the fourth longitudinally extending arm comprises a fourth set of longitudinally distributed electrodes;
• and
• an elongated shaft assembly comprising a catheter shaft, a first tube carrying a first set of wires, a second tube carrying a second set of wires, a third tube carrying a third set of wires, and a fourth tube carrying a fourth set of wires, wherein the catheter shaft defines a catheter shaft lumen, wherein each of the first tube, the second tube, the third tube, and the fourth tube extends through the catheter shaft lumen, wherein the first set of wires that is connected to the first set of longitudinally distributed electrodes, wherein the second set of wires that is connected to the second set of longitudinally distributed electrodes, wherein the third set of wires that is connected to the third set of longitudinally distributed electrodes, and wherein the fourth set of wires that is connected to the fourth set of longitudinally distributed electrodes.