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Endoscope

A technology for endoscopes and lenses, applied in the field of endoscopes, can solve problems such as difficulty in securing space for side-view lighting units, and failure to disclose the structure of side-view lighting units

Active Publication Date: 2012-02-01
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] When the front end side of the light guide is bent and arranged in this way, it is difficult to secure a space for disposing the side view illuminating unit with such a structure at the front end of the endoscope.
[0010] In addition, although the second conventional example can ensure a wide-angle side-view field of view, it does not disclose the structure of the side-view lighting unit.

Method used

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no. 1 Embodiment approach

[0034] Such as figure 1 As shown, the endoscope apparatus 1 according to the first embodiment of the present invention has an endoscope 2 for performing endoscopic inspection. This endoscope 2 is constituted by the following parts: the operation part 3 which is grasped and operated by the operator; the elongated insertion part 4 formed at the front end of the operation part 3 and inserted into the body cavity; and the base end. A universal cord 5 extending from the side of the operating part 3.

[0035] In addition, the insertion part 4 is composed of the following parts: a hard front end part 6 provided at the front end, a bendable bending part 7 provided at the rear end of the front end part 6, and a long and flexible part provided at the rear end of the bending part 7. The flexible tube portion 8 and the bending portion 7 can be bent by the bending operation lever 9 provided on the operating portion 3 .

[0036] In addition, if figure 2 As shown, on the front end portio...

no. 2 Embodiment approach

[0105] Next, a second embodiment of the present invention will be described. Figure 10 The structure of the side view illuminating part in 2nd Embodiment of this invention is shown with a cross-sectional view.

[0106] The side viewing lighting part in the present embodiment adopts the side viewing lighting window 14a as follows: for example, in one side viewing lighting window 14 of the side viewing lighting part of the first embodiment, the reflective member 46 (light guide groove) 45) of the inner surface of the reflective portion 46a at both ends in the circumferential direction are a planar reflective surface 61 and a stepped reflective surface 62, respectively.

[0107] In addition, in the present embodiment, the side viewing lighting window 14b is adopted in which the circumferential direction of the reflective portion 46a provided on the inner surface of the reflecting member 46 in the other side viewing lighting window 14 in the first embodiment is adopted. Both end...

no. 3 Embodiment approach

[0118] Figure 11 The structure of the side view illuminating part in 3rd Embodiment of this invention is shown with a cross-sectional view. This embodiment and for example Figure 8 Similar to the second modified example shown, three side-view lighting windows 14c, 14d, and 14e are provided. However, shown with Figure 8 The configuration example of the case is different.

[0119] And, the side view lighting windows 14c, 14d, 14e are in the Figure 8 In the shown structure of the side-view lighting window 14, a light-scattering material 71 and a transparent filler 72 are filled inside the light-guiding groove 45 to form a light-guiding member, and the light-scattering material 71 serves as a light-scattering member that scatters light. , composed of glass particles, etc.

[0120] In addition, the filler 72 has the function of maintaining the light scattering material 71 in an appropriate distribution or density, so that the light scattering material 71 as a whole has a f...

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Abstract

An endoscope includes: a distal end portion provided at a distal end of an insertion portion; a front-view observation window for observing an insertion direction of the distal end portion, which is provided facing toward the insertion direction; a lateral-view observation window for observing a circumferential direction of the distal end portion, which is formed along the outer circumferential lateral surface and has a lateral observation field of view; a light-emitting member having an emission end surface for emitting light in a distal end direction of the distal end portion; a groove portion formed on the outer circumferential lateral surface of the distal end portion so as to be longer than the emission end surface of the light-emitting member along the circumferential direction of the outer circumferential lateral surface of the distal end portion and opposed to the emission end surface, on a proximal end side with respect to the lateral-view observation window; a plurality of particles for scattering light arranged in the groove portion; and a transparent infill filled between the plurality of particles.

Description

technical field [0001] The present invention relates to endoscopes capable of direct and side viewing. Background technique [0002] In recent years, endoscopes equipped with an illumination unit and an observation unit on the distal end side of an insertion portion have been widely used in the medical field and other fields. [0003] An insertion portion of an endoscope is sometimes inserted into a tubular organ for inspection of its inner wall. In order to carry out the inspection at this time easily, the following endoscopes have been developed: in addition to having a direct-view field of view with the front side of the insertion part along the insertion direction or axial direction of the insertion part as the observation field of view, an endoscope with an insertion part The lateral direction (side) of the observation field of view is the side view field of view. [0004] For example, Japanese Patent Application Laid-Open No. 2004-329700, which is a first conventiona...

Claims

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Application Information

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IPC IPC(8): A61B1/00
CPCA61B1/0615A61B1/0623A61B1/07A61B1/126A61B1/00177A61B1/00096A61B1/044A61B1/00045A61B1/00114A61B1/00117A61B1/00181A61B1/0052A61B1/015A61B1/0676
Inventor 加瀬圣悟仓康人坂本雄次
Owner OLYMPUS CORP
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