PROBLEM TO BE SOLVED: To provide an electrode catheter, capable of irrigating the surface of a tip electrode with liquid supplied from a lumen of an eccentrically-formed catheter shaft uniformly in the circumferential direction.SOLUTION: The electrode catheter includes a catheter shaft 10 having an eccentrically-formed lumen 11 serving as a path for fluid, an irrigation member 20 connected to the tip side of the shaft, a tip electrode 30 connected to the tip side of the member, and a ring-shaped electrode 40. The electrode catheter further includes a plurality of irrigation holes 25A disposed on the irrigation member 20 at equiangular intervals and receiving grooves 215, 225 for housing a lead line 40L of the ring-shaped electrode 40, which are formed on the outer peripheral surface of a rear edge-side linear body part of the irrigation member 20 that is fitted to a tip-side recess 15 of the shaft 10.COPYRIGHT: (C)2013,JPO&INPIT【課題】偏心形成されているカテーテルシャフトのルーメンから供給される液体を先端電極表面に対して周方向に均一に灌注できる電極カテーテルを提供すること。【解決手段】液体流路となるルーメン11が偏心形成されたカテーテルシャフト10と、その先端側に接続された灌注部材20と、その先端側に接続された先端電極30と、リング状電極40とを備え、灌注部材20には、複数の灌注用開口25Aが等角度間隔に配置され、シャフト10の先端側凹部15に嵌合される灌注部材20の後端側直胴部の外周面には、リング状電極40のリード線40Lを収納する収納溝215,225が形成されている。【選択図】 図10
