| 摘要 |
PROBLEM TO BE SOLVED: To provide a bending portion for an endoscope and the endoscope which can prevent the piece fall of bending pieces without enlarging the diameter of the bending portion and raising the filling rate of a built-in object in the bending portion.SOLUTION: An endoscope 10 comprises: a first bending piece which is one bending piece of the adjacent bending pieces 62 and is formed so that a cross-sectional shape in a plane perpendicular to the axis direction is an elliptic shape, oval shape or flattened circular shape whose major axis direction or minor axis direction corresponds to a first direction; a second bending piece which is another bending piece of the adjacent bending pieces and is formed so that a cross-sectional shape in a plane perpendicular to the axis direction is a circular shape, elliptic shape, oval shape or flattened circular shape in which a length in the first direction differs from the first bending piece; and abutting portions in which a first end portion on a side facing the second bending piece in the first bending piece and a second end portion on a side facing the first bending piece in the second bending piece abut on each other, in at least two points when the bending portion is bent.SELECTED DRAWING: Figure 7 |
