Endoscope

An endoscope and bending technology, which is applied in the field of endoscopes, can solve problems such as damage to the insertion part, difficulty in bending the flexible tube part, and scratches on the outer skin of the insertion part

Active Publication Date: 2015-06-24
EVIDENT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the flexible tube portion whose hardness against bending is higher than that of the bending portion is difficult to bend, the bending portion may be bent so as to be broken.
[0009] If the bending part is bent so as to be broken, a large bending stress is applied to the connection part, and there is a possibility that the insertion part may be damaged du...

Method used

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Experimental program
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Effect test

no. 1 Embodiment approach

[0025] (Structure of endoscope device)

[0026] figure 1 It is a configuration diagram showing the configuration of the endoscope apparatus according to the present embodiment.

[0027] Such as figure 1 As shown, an endoscope system 1 includes an endoscope 2 and an apparatus main body 3 connected to the endoscope 2 .

[0028] The endoscope 2 includes an elongated and flexible insertion portion 4 , an operation portion 5 connected to the base end portion of the insertion portion 4 , and a universal cable 6 extending from the operation portion 5 .

[0029] The insertion portion 4 is sequentially connected with a distal rigid portion 7, a bending portion 8, a cylindrical elastic portion 9 and a vertically long flexible tube portion 10 from the top end side of the insertion portion 4, and the base end portion of the flexible tube portion 10 is connected with Operation part 5.

[0030] The bending portion 8 can be bent in four directions, for example, up, down, left, and right ...

no. 2 Embodiment approach

[0073] In the first embodiment, the cylindrical elastic portion of the endoscope has the same hardness against bending over the entire length range in the axial direction, but in the second embodiment, the hardness against bending of the first flexible tube portion is along the Depending on the axial direction of the insertion part.

[0074] Hereinafter, the present embodiment will be described. The endoscope of the present embodiment has substantially the same configuration as that of the endoscope of the first embodiment. Therefore, the same reference numerals are assigned to the same constituent elements and descriptions are omitted. The constituent elements are explained.

[0075] Figure 7 It is a sectional view of the insertion part of this embodiment. A cylindrical elastic portion 9A is disposed between the bending portion 8 and the flexible tube portion 10 . The cylindrical elastic portion 9A has a close-fitting coil 81 .

[0076] The close-fit coil 81 is composed ...

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PUM

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Abstract

An endoscope (2) comprises: a tip rigid part (7) which is provided on a tip of an insertion part (4); a bending part (8) which is provided on a base end side of the tip rigid part (7) of the insertion part (4) and which bends according to a bending operation of an operational part (5); a flexible tube part (10) which is provided on a base end side of the bending part (8); and a cylindrical elastic part (9) which does not bend according to the bending operation of the operational part (5) and which has a stiffness to bending that is greater than the stiffness to bending of the bending part (8) and smaller than the stiffness to bending of the flexible tube part (10).

Description

technical field [0001] The present invention relates to an endoscope, and more particularly, to an endoscope having a curved portion on the distal end side of an insertion portion. Background technique [0002] Endoscopes have been widely used in industrial and medical fields. The endoscope has an elongated insertion portion, and a distal rigid portion having an observation window and an illumination window is provided at the distal end of the insertion portion. [0003] A curved portion is provided on the base end side of the distal rigid portion of the insertion portion. The bending portion of the endoscope can be bent in two directions of up and down, or in two directions of left and right, or can be bent in four directions of up, down, left, and right. When the bending operation member of the operation part is operated, the bending wire penetrating through the insertion part is pulled or loosened according to the operation, and the bending part is bent. Therefore, the...

Claims

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Application Information

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IPC IPC(8): A61B1/005A61B1/04A61B1/06G02B23/24
CPCA61B1/00064A61B1/00131A61B1/005A61B1/04A61B1/06G02B23/24A61B1/0055A61B1/0057A61B1/051H04N23/51G02B23/2476
Inventor 西岛义和
Owner EVIDENT CORP
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