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Endoscope

An endoscope and outer coating technology, applied in the field of endoscope, can solve the problems of relative positioning and fixed positioning of the thin tube and the outer tube, and achieve the effect of simple structure and flexible level.

Active Publication Date: 2012-10-17
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in the endoscope in Japanese Patent Application Laid-Open No. 1-244733, only the inner layer elastic body covering the flexible tube portion is arranged inside the outer layer elastic body, therefore, it is not necessarily easy to realize the inner layer elastic body at the time of manufacture. Relative positioning and fixed positioning of layer elastic body and outer elastic body
Similarly, in the endoscope disclosed in Japanese Patent Application Laid-Open No. 2001-137180, only the thin tube covering the soft part is arranged inside the outer coating tube, and it is not necessarily easy to realize the relative alignment of the thin tube and the outer tube. Positioning and Fixed Positioning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0063] Figure 4A with Figure 4B is a perspective view showing the steps of forming the overcoat layer according to the first embodiment. noticed in Figure 4A with Figure 4B In the soft portion 40 and the curved portion 42, except for the outer coating (refer to image 3 ) other than the internal structure is shown as a cylindrical member 79. and, Figure 5 is an external view of the entire insertion portion 14 covered with the outer coating according to the first embodiment.

[0064] The outer coat according to the present embodiment is configured of a first outer coat 80 provided on the soft portion 40 and the bent portion 42 and a second outer coat 82 covering only the soft portion 40 . More specifically, first if Figure 4A As shown, the inner structure 79 of the curved portion 42 and the soft portion 40 is coated with a first outer coating 80 . The first outer coating 80 generally has a unitary structure, covers the entire soft portion 40 and the curved portion...

no. 2 example

[0077] Figure 7 It is an external view of the entire insertion part 14 seen from the side, which is covered with the outer coating according to the second embodiment.

[0078] The insertion portion 14 of the present embodiment has a third outer coating 84 covering the second outer coating 82 . The third outer coating layer 84 is provided within a predetermined range on the base end (the end on the hand operation portion 12 side) of the second outer coating layer 82 .

[0079] The other components each have a structure similar to that of the outer coating according to the above-described first embodiment.

[0080] Due to the provision of the third outer coating layer 84 , the rigidity and strength of the root portion (the end on the hand operation portion 12 side) of the soft portion 40 can be further enhanced, thereby further improving the operability of the insertion portion 14 .

[0081] Note that the third outer coating 84 can be used for covering and being fixed in a si...

no. 3 example

[0083] Figure 8A is an external side view showing the steps of forming the outer coating layer according to the third embodiment, Figure 8B is an external side view of the entire insertion portion 14 covered by the outer coating according to the third embodiment, seen from the side.

[0084] The first outer coating layer 80 of this embodiment has a small diameter portion 86 corresponding to the soft portion 40 and a large diameter portion 87 corresponding to the bent portion 42 , and the small diameter portion 86 and the large diameter portion 87 are continuously and integrally formed. The small diameter portion 86 has a larger outer diameter D than the large diameter portion 87 2 small outer diameter D 1 , the outer diameter D of the large diameter portion 87 2 and the outer diameter D of the small diameter portion 86 1 The difference between them is approximately equal to the thickness of the second outer coating 82 (thickness in the cross-sectional diameter direction)...

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PUM

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Abstract

An endoscope has an insertion part including a bending part bending with a remote operation and a soft part connected to the bending part, the insertion part having: a first outer coat with an integral structure provided in at least part of the soft part and in the bending part; and a second outer coat with which the first outer coat is coated in the soft part only.

Description

technical field [0001] The present invention relates to an endoscope, and more particularly, to the structure of an overcoat formed in an endoscope insertion portion having a soft portion and a curved portion. Background technique [0002] In the medical field, diagnosis and treatment using endoscopes are widely practiced and used. For example, the image inside the body cavity is taken by an image pickup device (such as a CCD) integrated at the tip of the insertion part of the endoscope, and after the processor device performs various processing, the image at a desired position and at a desired angle in the body cavity can be displayed on the monitor. And, a treatment tool is inserted into the body cavity via a channel of the endoscope for inserting the treatment tool, and treatment such as polypectomy can be performed by the treatment tool. [0003] In an insertion portion of an endoscope to be inserted into a body cavity, a hard tip portion such as an objective lens, a b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/00
CPCA61B1/00078A61B1/00071A61B1/0055
Inventor 桂洋史尾崎多可雄小幡佳宽井山胜藏大田恭义细野康幸
Owner FUJIFILM CORP