| 摘要 |
An endoscope is provided with a bending tube including sequentially connected plural bending pieces constituting a bending section which is provided in a slim and elongated insertion portion and which is brought into a bending operation by remote control, a distal end section which is provided in the front end side of this bending tube and which constitutes the front end side of the insertion portion, a flexible tube section which is provided in the base end side of the bending tube and which constitutes the rear end side of the insertion portion, and a covering member which is disposed to cover the bending tube and which has elasticity in order that both end portions of the covering member are fixed to the distal end section or the flexible tube section by being fastened radially inward, wherein the relationship represented by 0.3D<d<1.0D is established between a thickness d of the covering member fixed by fastening and the thickness D of the covering member before being fixed by fastening.
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