JPH02116402U

JPH02116402U -

Info

Publication number: JPH02116402U
Application number: JP2521189U
Authority: JP
Priority date: 1989-03-07
Filing date: 1989-03-07
Publication date: 1990-09-18
Anticipated expiration: 2004-03-07
Also published as: JPH0717283Y2

Description

[Brief explanation of drawings]

第１図から第３図までの図面はこの出願に係る
第一の考案の一実施例を示すものであり、第１図
は可撓管の分解斜視図、第２図は第１図−断
面図、第３図は内視鏡の全体外観図である。第４
図は第一の考案の他の実施例である。又、第５図
は第二の考案の一実施例の分解斜視図、第６図は
第５図−断面図、第７図は第三の考案の一実
施例の分解斜視図、第８図は第７図−断面図
である。第９図は従来の可撓管の分解斜視図、第
１０図は第９図−断面図である。３…湾曲部、２０…可撓管、２１…螺旋管、２
１ａ…係合凹部、２１ｂ…係合凸部、２１Ａ…係
合凹部形成部、２１Ｂ…係合凹部非形成部、２１
Ｃ…係合凸部形成部、２１Ｄ…係合凸部形成部、
２２…ブレード、２４…外皮チユーブ、２６…操
作ワイヤ。 The drawings from FIG. 1 to FIG. 3 show an embodiment of the first invention related to this application, and FIG. 1 is an exploded perspective view of the flexible tube, and FIG. 2 is a cross-sectional view of the flexible tube. FIG. 3 is an overall external view of the endoscope. Fourth
The figure shows another embodiment of the first idea. 5 is an exploded perspective view of an embodiment of the second invention, FIG. 6 is a sectional view of FIG. 5, and FIG. 7 is an exploded perspective view of an embodiment of the third invention. FIG. 7 is a sectional view. FIG. 9 is an exploded perspective view of a conventional flexible tube, and FIG. 10 is a cross-sectional view of the conventional flexible tube. 3...Bending portion, 20...Flexible tube, 21...Spiral tube, 2
1a...Engagement recess, 21b...Engagement convexity, 21A...Engagement recess formation part, 21B...Engagement recess non-formation part, 21
C... Engaging protrusion forming part, 21D... Engaging protruding part forming part,
22...Blade, 24...Sheath tube, 26...Operation wire.

Claims

[Claims for Utility Model Registration] (1) At least one pair of operation wires for bending the bending portion of the endoscope move forward and backward in the axial direction of the helical tube covered with a blade and an outer skin tube. In a flexible tube of an endoscope that is attached movably but not movably in the circumferential direction, the helical tube is provided with engagement recesses that are recessed radially inward at the same position in the circumferential direction at every predetermined pitch, and the helical tube is The operating wire is passed between the engagement recess and the blade in the engagement recess formed portion of the tube, and is passed through the inside of the helical tube in the engagement recess not formed portion. Flexible tube. (2) At least one pair of operation wires for bending the bending portion of the endoscope are movable forward and backward in the axial direction of the helical tube covered with the blade and the outer skin tube, but cannot be moved in the circumferential direction. In the flexible tube of the endoscope attached to the helical tube, the helical tube is provided with engaging protrusions that protrude radially inward at the same positions in the circumferential direction at predetermined pitches, and the engaging protrusions of the helical tube A flexible tube of an endoscope, wherein the operating wire is passed through the inside of the engagement protrusion in the formed part, and is passed between the outside of the helical tube and the blade in the non-formed part. . (3) At least one pair of operation wires for bending the bending portion of the endoscope are movable forward and backward in the axial direction of the helical tube covered with the blade and the outer skin tube, but cannot be moved in the circumferential direction. In the flexible tube of the endoscope attached to the endoscope, the operating wire is inserted into the inside of the helical tube, and is also inserted into the blade drawn into the inside of the helical tube from the gap between the helical tubes at predetermined pitches. A flexible tube for an endoscope.