An object of the present invention is to provide a catheter capable of reliably receiving a retrograde guide wire through an opening. The catheter 3 of the present invention includes a tubular mesh member 110 that can be expanded and contracted in the radial direction, a first hollow shaft 120, a distal tip 130, and a portion of which is arranged in a space inside the mesh member 110. A second hollow shaft 340 having a proximal end located outside the mesh member 110 and a distal end connected to the distal end and / or the distal end tip 130 of the mesh member 110, the proximal end being the first hollow shaft. The mesh member 110 and the core wire extending through the inside of the first hollow shaft 120 are provided so as to be located closer to the base end side than the base end of 120.逆行性ガイドワイヤを目開きを介して確実に受け入れることができるカテーテルの提供を目的とする。 本発明のカテーテル３は、径方向に拡縮可能なチューブ状のメッシュ部材１１０と、第１の中空シャフト１２０と、先端チップ１３０と、一部がメッシュ部材１１０の内側の空間に配置され、メッシュ部材１１０を貫通して、基端がメッシュ部材１１０の外部に位置する第２の中空シャフト３４０と、先端がメッシュ部材１１０の先端および／または先端チップ１３０に接続され、基端が第１の中空シャフト１２０の基端よりも基端側に位置するようにメッシュ部材１１０および第１の中空シャフト１２０の内部を通って延びるコアワイヤとを備えている。
