JPH0258407U

JPH0258407U -

Info

Publication number: JPH0258407U
Application number: JP13781488U
Authority: JP
Priority date: 1988-10-24
Filing date: 1988-10-24
Publication date: 1990-04-26

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例による内視鏡用
挿入案内管を内視鏡との関連で示した斜視図、第
２図は同挿入案内管の使用状態を示す説明図、第
３図は本考案の第２の実施例による内視鏡用挿入
案内管を内視鏡挿入部との関連で示した中央縦断
面図、第４図及び第５図は前記挿入案内管におけ
る切割内管の変形例を示した横断面図、第６図は
従来の内視鏡用挿入案内管による問題点を説明す
るための使用状態図である。２３…内視鏡、１３…同内視鏡の太い先端部、
１５…同内視鏡の細い可撓管、１６…同内視鏡の
挿入部、２４…切離し部、２５，２５′，２５″
…切割内管、２６…円筒状の外套管、２８…切欠
部、２９…突当て部。 FIG. 1 is a perspective view showing an endoscope insertion guide tube according to a first embodiment of the present invention in relation to an endoscope; FIG. 2 is an explanatory diagram showing the usage state of the insertion guide tube; FIG. 3 is a central vertical sectional view showing an endoscope insertion guide tube according to a second embodiment of the present invention in relation to the endoscope insertion section, and FIGS. 4 and 5 are cross-sectional views of the insertion guide tube according to the second embodiment of the present invention. FIG. 6 is a cross-sectional view showing a modified example of the inner tube, and is a usage state diagram for explaining problems with the conventional insertion guide tube for an endoscope. 23... Endoscope, 13... Thick tip of the endoscope,
15...Thin flexible tube of the endoscope, 16...Insertion part of the endoscope, 24...Separation part, 25, 25', 25''
...Cut inner tube, 26...Cylindrical outer tube, 28...Notch, 29...Abutting portion.

Claims

[Scope of utility model registration request]

An insertion guide tube for an endoscope, which is used as an aid for introducing an endoscope into a body cavity, and has a thick, non-removable distal end having an outer diameter larger than that of the flexible tube on the proximal side. A cylindrical outer tube for guiding insertion having an inner diameter that can be inserted into the insertion portion of the endoscope from the distal end side; In addition, it has approximately the same diameter as the endoscope flexible tube or a slightly larger diameter, and has a total length that is approximately the same as the length of the mantle tube, and has a cutaway part in the longitudinal direction along the entire length, and the cutoff part and the cutoff part on the proximal side. A cut inner tube is provided with an abutment portion having a diameter larger than the inner diameter of the outer tube with a communicating notch portion, and the cut inner tube can be fitted from the side into the flexible tube portion of the endoscope by expanding the cut portion. An endoscope insertion guide tube consisting of a combination.