PROBLEM TO BE SOLVED: To easily perform an operation for pulling out a broken wire material, during catheter manufacturing operations.SOLUTION: A catheter 100 is formed by having a tubular body 10 including: an inner layer 11 that is formed of a resin material 111 and that has a main lumen 20 inside a coil layer 30 that is formed by having the wire material 31 wound around a spiral groove 112 formed on the outer peripheral surface of the inner layer 11 an outer layer 12 for covering the coil layer 30 a recessed groove 113 that is formed near the distal end 15 of the inner layer 11 in such a manner as to continue into the spiral groove 112 and formed in such a shape that a spiral pitch becomes gradually larger in the direction of the distal end 15 and a marker 40 that is mounted on the outer periphery of the recessed groove 113.COPYRIGHT: (C)2012,JPO&INPIT【課題】カテーテルの製造作業中に、破断した線材料を引き抜く作業を容易に行うことを実現する。【解決手段】カテーテル100を、樹脂材料111により形成され内部にメインルーメン20を有する内層11、内層11の外周表面に形成された螺旋溝112に線材料31が巻回されて形成されたコイル層30、このコイル層30を被覆する外層12、内層11の遠位端部15付近に螺旋溝112と一連に形成され、遠位端部15方向に次第に螺旋ピッチが広く形成された凹溝113、および、この凹溝113の外周上に装着したマーカー40からなる管状本体10を備えて形成する。【選択図】図1
