Flexible high-density mapping catheter tips and flexible ablation catheter tips with onboard high-density mapping electrodes

An electrophysiology catheter, the catheter comprising:

• an elongated catheter body comprising a proximal end and a distal end, and defining a catheter longitudinal axis extending between the proximal end and the distal end;
• a flexible tip assembly coupled to the distal end of the catheter body and adapted to conform to tissue, the flexible tip assembly comprising a plurality of electrode-carrying arms, wherein at least a portion of each of the plurality of electrode-carrying arms lie in a common plane, the plurality of electrode-carrying arms comprising:
• a first longitudinally-extending outer arm;
• a second longitudinally-extending outer arm;
• a first longitudinally-extending inner arm;
• and
• a second longitudinally-extending inner arm;
• a plurality of electrodes disposed on each of the plurality of electrode-carrying arms;
• a first magnetic sensor disposed on the first outer arm;
• and
• a second magnetic sensor disposed on the second outer arm,
• wherein the plurality of electrodes are arranged in a planar array comprising a plurality of rows of longitudinally-aligned electrodes aligned parallel to the catheter longitudinal axis.