Ablation catheter tip with flexible electronic circuitry

An ablation catheter tip assembly comprising:

• a tip comprising a conductive shell and a tip insert, the tip insert being thermally insulative, the tip defining a dispersion chamber between the conductive shell and the tip insert;
• a metal structural member coupled to a proximal portion of the tip;
• a metal manifold having a distal end welded to a distal portion of the metal structural member, an outer circumference of the metal manifold contacting an inner circumference of the metal structural member at a plurality of locations, the metal manifold defining an irrigation lumen extending through the metal manifold along a longitudinal axis thereof;
• an annular dispersion feature disposed inside the conductive shell longitudinally between the distal end of the metal manifold and the dispersion chamber;
• and
• a plurality of flexible electronic circuits that extend through the irrigation lumen of the metal manifold,
• wherein the irrigation lumen terminates proximally adjacent to the annular dispersion feature such that irrigant is configured to be delivered from a distal end of the irrigation lumen, through the annular dispersion feature, and into the dispersion chamber, and
• wherein the annular dispersion feature is configured to distribute the irrigant into the dispersion chamber and circumferentially around the tip insert between the tip insert and the conductive shell for dispersion through the conductive shell.