The conductive tip catheter has a flexible tubular member with a lumen extending between a proximal end and a distal end. The conductive tip catheter further includes a conductive metal coil disposed at least partially within the lumen of the flexible tubular member. The conductive metal coil is disposed at the distal end of the metal coil and has a first region with a first pitch, and is located proximal to the first region and has a first pitch. A second region with a larger second pitch and a third region with a third pitch located proximal to the second region and different from the first pitch and the second pitch And having a region. A conductive tip is provided at the distal end of the flexible tubular member, the conductive tip having a tip lumen that is in fluid communication with the lumen.導電性先端部型カテーテルは、近位端と遠位端との間に延びるルーメンを備えた可撓性管状部材を有する。導電性先端部型カテーテルは、可撓性管状部材のルーメン内に少なくとも部分的に配置された導電性金属コイルを更に有する。導電性金属コイルは、金属コイルの遠位端のところに配置されていて第１のピッチを備えた第１の領域と、第１の領域の近位側に位置していて、第１のピッチよりも大きい第２のピッチを備えた第２の領域と、第２の領域の近位側に位置していて第１のピッチおよび第２のピッチとは異なる第３のピッチを備えた第３の領域とを有する。導電性先端部が可撓性管状部材の遠位端のところに設けられ、導電性先端部は、ルーメンと流体連通状態にある先端部ルーメンを有する。
