PROBLEM TO BE SOLVED: To provide a tip electrode of a catheter. A tip electrode of a catheter includes an outer wall and a temperature sensor assembly. The outer wall includes a thermally conductive multilayer printed circuit board (TCM-PCB) containing voids. A temperature sensor assembly mounted in the air gap of a TCM-PCB comprises a temperature sensor, one or more thermal insulation layers surrounding the volume of the temperature sensor except for one surface thereof, and a heat conductive layer covering the excluded surfaces. ,including. [Selection diagram] Fig. 1【課題】カテーテルの先端電極を提供すること。【解決手段】カテーテルの先端電極は、外壁及び温度センサアセンブリを含む。外壁は、空隙を含む熱伝導性多層プリント回路基板（ＴＣＭ－ＰＣＢ）を含む。ＴＣＭ－ＰＣＢの空隙に取り付けられた温度センサアセンブリは、温度センサと、温度センサの体積を、その１つの面を除いて囲む１つ以上の断熱層と、除かれた面を覆う熱伝導層と、を含む。【選択図】図１
