PROBLEM TO BE SOLVED: To provide a catheter and a catheter system capable of bringing stimulation application means and information detection means provided to the catheter into contact with a target region properly by causing the shape of the catheter to be hardly deformed in a treatment.SOLUTION: A catheter includes a long catheter body 21 in which a spiral part 21a wound in a coil shape is formed on the tip side, a catheter operation part 23 provided on a base end side for operating the catheter body 21, at least one or more electrodes 28 for applying stimulation to a tissue in a body or at least one or more temperature sensors 280 for measuring the temperature arranged at the spiral part 21a, and a balloon 24 for holding the tip of the catheter body at a position separated from the inner wall of the living body lumen.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】施術の際に形状を崩れにくくしてカテーテルに設けた刺激印加手段や情報検知手段を目的の部位に適切に接触させることができるカテーテル及びカテーテルシステムを提供すること。【解決手段】先端側にコイル状に巻成された螺旋部21aが形成された長尺のカテーテル本体21と、基端側に設けられ、カテーテル本体21を操作するためのカテーテル操作部23と、螺旋部21aに少なくとも1つ以上配置される、体内組織に刺激を印加する為の電極28又は温度を測定するための温度センサー280と、カテーテル本体の先端を前記生体管腔の内壁から離間する位置に保持するためのバルーン24とを備える。【選択図】図1
