| 摘要 |
PROBLEM TO BE SOLVED: To provide a guide tube which enables accurate puncture work while keeping strength in a region inserted into a body cavity.SOLUTION: A guide tube 100 includes a tube body 10 which has a lumen 20 in the inside and is inserted into a body cavity, a puncture opening 30 leading to the lumen 20 and the outside of the tube body 10, and a puncture opening end surface 40 extending in a distal end-proximal end direction of the tube body 10 for sectioning the puncture opening 30. In a transverse section formed by cutting perpendicularly relative to an extending direction of an axial center X of the tube body 10, an opening angle θ formed by two line segments 14 connecting end parts 16 on a side of the axial center X of the puncture opening end surface 40 and the axial center X is less than 180 degrees, and a directional component in an opening direction II included in a normal line I of the puncture opening end surface 40 is configured to be larger than a directional component in the opening direction II of the puncture opening 30 included in a perpendicular line of the line segment 14.SELECTED DRAWING: Figure 3 |
