PROBLEM TO BE SOLVED: To provide a bending structure of a medical tube, capable of smooth bending as a whole at a bending portion.SOLUTION: The bending structure of a medical tube 3 formed flexibly, long and cylindrically includes an operation wire inserting hole 5 formed penetrating in an axial direction in the vicinity of the outer circumference the distal end of an operation wire 7 inserted through the operation wire inserting hole 5 is fixed on the distal end side and a bending portion 8 formed on the distal end side by pulling the operation wire 7 to the base end portion is bent to the operation wire inserting side by an operation section 4 disposed on the base end side. The structure is characterized in that a plurality of substantially V-shape notches 9 formed to be opened in the bending direction are formed at intervals in the axial direction on the outer circumferential side in the bending portion 8, and the notches 9 are formed so that the depth of an opening thereof may be gradually deeper from the base end side toward the distal end side of the bending portion 8.COPYRIGHT: (C)2013,JPO&INPIT【課題】湾曲部において全体として滑らかな湾曲が可能な医療用チューブの湾曲構造の提供。【解決手段】可撓性を有し長尺状かつ円筒状に形成され、外周部近傍において軸方向に貫通して穿設された操作ワイヤ挿通孔5を有し、操作ワイヤ挿通孔5に挿通される操作ワイヤ7の先端が先端側に固定され、基端側に配置された操作部4によって、操作ワイヤ7を基端側に牽引することにより先端側に形成された湾曲部8が操作ワイヤ挿通側に湾曲する医療用チューブ3の湾曲構造において、 湾曲部8には、外周側に軸方向に間隔をあけて湾曲方向に拡開する略V字状の切り欠き部9が複数形成され、複数の切り欠き部9の開口深さが、湾曲部8の基端側から先端側に向けて次第に深くなるよう形成されたことを特徴とする。【選択図】図2
