Endoscope flexible tube

内窥镜挠性管

Abstract

The purpose of the present invention is to provide an endoscope flexible tube that enables a large internal space to be ensured while maintaining ease of assembly. To achieve this purpose, an endoscope flexible tube according to the present invention includes: a spiral tube (11) formed by spirally winding a belt-like plate; an inner tubular member (14) disposed inside an end (21) of the spiral tube; and an outer tubular member (15) that is disposed outside the end of the spiral tube and holds the end of the spiral tube between itself and the inner tubular member. The inner tubular member has such a configuration that it is disposed inside the end of the spiral tube such that the diameter D1A of the end of the spiral tube is larger than the diameter D1 of a section different from the end of the spiral tube.
本发明的目的在于提供能够维持组装性并且确保较大的内部空间的内窥镜挠性管,因此,本发明的内窥镜挠性管具有:螺旋管(11),其是将带状板卷绕成螺旋状而构成的;内侧筒状部件(14),其被配置于螺旋管的端部(21)的内侧;以及外侧筒状部件(15),其被配置于螺旋管的端部的外侧,将螺旋管的端部夹持在其和内侧筒状部件之间,内侧筒状部件具有如下结构:以使螺旋管的端部的直径D1A比螺旋管的与端部不同的部分的直径D1大的方式,被配置于螺旋管的端部的内侧。

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