JP4668440B2 - Electronic endoscope - Google Patents

Electronic endoscope Download PDF

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Publication number
JP4668440B2
JP4668440B2 JP2001075449A JP2001075449A JP4668440B2 JP 4668440 B2 JP4668440 B2 JP 4668440B2 JP 2001075449 A JP2001075449 A JP 2001075449A JP 2001075449 A JP2001075449 A JP 2001075449A JP 4668440 B2 JP4668440 B2 JP 4668440B2
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JP
Japan
Prior art keywords
electronic endoscope
observation image
insertion portion
endoscope
bending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2001075449A
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Japanese (ja)
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JP2002272668A (en
Inventor
裕之 高瀬
輝雄 大内
智志 木戸岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoya Corp
Original Assignee
Hoya Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2001075449A priority Critical patent/JP4668440B2/en
Publication of JP2002272668A publication Critical patent/JP2002272668A/en
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Publication of JP4668440B2 publication Critical patent/JP4668440B2/en
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Description

【0001】
【発明の属する技術分野】
この発明は電子内視鏡に関する。
【0002】
【従来の技術】
電子内視鏡は一般に、挿入部の先端に内蔵された固体撮像素子によって撮像された内視鏡観察画像がモニタ画面に表示されるようになっている。
【0003】
【発明が解決しようとする課題】
内視鏡の挿入部先端からイメージガイドファイババンドルによって観察像が伝達されるいわゆるファイバスコープと電子内視鏡との使い勝手上での大きな相違は、ファイバスコープでは、操作部に突設された接眼部を覗き込んで観察像を見るようになっているのに対して、電子内視鏡ではテレビモニタに表示された観察画像を見るようになる点である。
【0004】
したがって、ファイバスコープでは操作者のみしか観察像を見ることができないのに対して、電子内視鏡では大勢の人が操作者と同時に観察画像を見ることができ、診断上大きなメリットがある。
【0005】
一方、ファイバスコープのメリットは、接眼部が操作部と一体になっていることから、挿入動作等に伴って操作者が操作部をどのような向きに回転させても、観察像の向きと患者の身体の向きとの対応関係が狂わないので、操作者は自分が見ている観察像が患者の身体をどの方向に見ているものなのか常に正しく認識し、挿入操作や診断等を迷うことなく行うことができる。
【0006】
これに対して、電子内視鏡においてテレビモニタに表示される観察画像は、内視鏡を真っ直ぐな状態にした時の上方向が常に画面の上方向に向いた状態で表示される。
【0007】
したがって、操作部と一体に回転する挿入部先端がどのような向きになっていても、モニタ上の表示画面では、それとは全く無関係に内視鏡の「上方向」が常に上方向に表示されるので、モニタ画面を見ただけでは、観察画像と患者の身体の向きとの対応が全くつかない。
【0008】
そこで、操作者は手に握っている操作部の向き等から内視鏡の「上方向」を認識して、その方向がモニタ表示画面の上方向にあたるとの判断をするのであるが、挿入操作等に夢中になって操作部をグルグル回していると、そのような「上方向」の認識作業は困難かつ面倒である場合が少なくない。
【0009】
そこで本発明は、内視鏡の操作者が内視鏡の「上方向」など基準となる方向を容易に認識して、モニタ画面に表示された内視鏡観察画像の向きと患者の身体の向きとの対応関係を容易かつ確実に判断することができる電子内視鏡を提供することを目的とする。
【0010】
【課題を解決するための手段】
上記の目的を達成するため、本発明の電子内視鏡は、可撓性挿入部の先端に内蔵された固体撮像素子により撮像された内視鏡観察画像がモニタ画面に表示される電子内視鏡において、挿入部の基端付近に、基準方向へ曲げられる場合の柔軟性がその周囲の方向へ曲げられる場合の柔軟性より大きな基準方向柔軟部が形成されているものである。
【0011】
なお、挿入部の基端部分に、挿入部が操作部との連結部分から急激に曲がるのを抑制するための折れ止め部材が取り付けられていて、基準方向柔軟部が折れ止め部材に形成されていてもよい。
【0012】
その場合、基準方向柔軟部が、折れ止め部材の基準方向側の肉厚をその周辺の方向の肉厚と比べて薄くして形成されていてもよい。
なお、基準方向が、内視鏡観察画像の上方向に対応する方向であってもよい。
【0013】
【発明の実施の形態】
図面を参照して本発明の実施例を説明する。
図1は電子内視鏡の全体構成を示しており、挿入部可撓管1の先端部分には、挿入部可撓管1の基端に連結された操作部2からの遠隔操作によって屈曲する湾曲部3が連結されている。4は、そのような湾曲操作を行うための湾曲操作レバーである。
【0014】
湾曲部3の先端に連結された先端部本体5には、対物光学系6と、その対物光学系6により結像される内視鏡観察像を撮像するための固体撮像素子7等が内蔵されている。
【0015】
操作部2から延出するコードの先端はビデオプロセッサ10に接続されており、固体撮像素子7によって撮像された内視鏡観察画像が、ビデオプロセッサ10に接続されたテレビモニタ11に表示される。12は、テレビモニタ11に表示された内視鏡観察画像である。
【0016】
この実施例の電子内視鏡における「基準方向」は、湾曲操作レバー4を押し下げた時に湾曲部3が屈曲する方向であり、それを「上方向」と称する。そして、テレビモニタ11に表示される内視鏡観察画像12は、固体撮像素子7の撮像面における上方向側が必ず上になるようにセットされている。
【0017】
挿入部可撓管1と操作部2との連結部には、挿入部可撓管1がその部分で小さな曲率半径で急激に曲がらないように、弾力性のあるゴム材等からなる折れ止め部材8が挿入部可撓管1の基端付近を囲む状態に取り付けられている。
【0018】
折れ止め部材8は、操作部2との隣接部分が最も肉厚が厚くて、先側へ次第に肉厚が薄くなるテーパ円筒状に形成されているが、図2に示されるように、一面(8a)だけが外面側から切り削がれた形状で他の部分より薄い肉厚に形成されている。
【0019】
そして、図1に示されるように、折れ止め部材8は、この電子内視鏡の基準方向である「上方向」に肉薄部8a(基準方向柔軟部)が向くように取り付けられている。
【0020】
その結果、挿入部可撓管1と操作部2との連結部は、上方向(及び、下方向)へ曲がろうとする場合の柔軟性が他の方向へ曲がろうとする場合の柔軟性より大きくて、曲がり易い。
【0021】
したがって、図3に示されるように、患者100に内視鏡を挿入して検査している最中に、操作部2がどの様な向きになっている状態でも、操作者が操作部2を握った状態で折れ止め部材8部分を軽くピクピクと屈曲させる動作をすれば、それが「上方向」に行われた時だけ他より軽く曲がることが手に感じられる。
【0022】
したがって、操作者は操作部2を見ることなく、手の感触だけで内視鏡の「上方向」を容易に認識することができ、それによりテレビモニタ11に表示された内視鏡観察画像12の向きと患者100の身体向きとの対応関係を判断して、湾曲操作レバー4の操作や挿入部可撓管1の挿入動作等を意図通りに行うことができる。
【0023】
なお、本発明は上記実施例に限定されるものではなく、例えば電子内視鏡の基準方向は必ずしも「上方向」一か所である必要はなく、例えば図4に示されるように、折れ止め部材8に肉薄部8aを90°間隔で形成して、上下左右四方向を基準方向としてもよい。
【0024】
【発明の効果】
本発明によれば、挿入部の基端付近に、内視鏡観察画像の基準方向へ曲げられる場合の柔軟性がその周囲の方向へ曲げられる場合の柔軟性より大きな基準方向柔軟部を形成したことにより、操作部がどの様な向きになっている状態でも、操作者が操作部を握った状態で挿入部可撓管の基端付近を軽く屈曲させる動作をすれば、それが基準方向に行われた時だけ他より軽く曲がることが手に感じられるので、操作者が内視鏡の基準となる方向を容易に認識して、モニタ画面に表示された内視鏡観察画像の向きと患者の身体の向きとの対応関係を容易かつ確実に判断することができる。
【図面の簡単な説明】
【図1】本発明の実施例の電子内視鏡の全体構成図である。
【図2】本発明の実施例の電子内視鏡の折れ止め部材の斜視図である。
【図3】本発明の実施例の電子内視鏡の使用状態の略示図である。
【図4】本発明の実施例の電子内視鏡の折れ止め部材の他の例の斜視図である。
【符号の説明】
1 挿入部可撓管
2 操作部
3 湾曲部
4 湾曲操作レバー
7 固体撮像素子
8 折れ止め部材
8a 肉薄部(基準方向柔軟部)
11 テレビモニタ
12 内視鏡観察画像
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic endoscope.
[0002]
[Prior art]
In general, an electronic endoscope is configured such that an endoscope observation image captured by a solid-state imaging device built in the distal end of an insertion portion is displayed on a monitor screen.
[0003]
[Problems to be solved by the invention]
A large difference in usability between the so-called fiberscope and the electronic endoscope, in which the observation image is transmitted from the distal end of the endoscope insertion portion by the image guide fiber bundle, is the eyepiece projected from the operation portion of the fiberscope. In contrast, the electronic endoscope is configured to look at the observation image displayed on the television monitor, while the observation image is viewed through the screen.
[0004]
Therefore, only the operator can see the observation image with the fiberscope, but with the electronic endoscope, many people can see the observation image at the same time as the operator.
[0005]
On the other hand, the merit of the fiberscope is that the eyepiece is integrated with the operation unit, so that the orientation of the observation image is the same regardless of the direction the operator rotates the operation unit in accordance with the insertion operation. Since the correspondence with the patient's body orientation does not go wrong, the operator always recognizes the direction in which the observation image he is looking at is looking at the patient's body, and hesitates to perform insertion operations and diagnoses. Can be done without.
[0006]
On the other hand, the observation image displayed on the television monitor in the electronic endoscope is displayed in a state where the upward direction when the endoscope is straightened always faces the upward direction of the screen.
[0007]
Therefore, regardless of the orientation of the distal end of the insertion section that rotates together with the operation section, the “upward” direction of the endoscope is always displayed upward on the display screen on the monitor, regardless of the orientation. Therefore, just by looking at the monitor screen, there is no correspondence between the observed image and the patient's body orientation.
[0008]
Therefore, the operator recognizes the “upward direction” of the endoscope from the orientation of the operation unit held by the hand, and determines that the direction corresponds to the upper direction of the monitor display screen. If the operation unit is swung around like this, such “upward” recognition work is often difficult and troublesome.
[0009]
Therefore, the present invention allows the operator of the endoscope to easily recognize a reference direction such as the “upward direction” of the endoscope, and to determine the direction of the endoscopic observation image displayed on the monitor screen and the patient's body. An object of the present invention is to provide an electronic endoscope that can easily and reliably determine a correspondence relationship with a direction.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the electronic endoscope of the present invention is an electronic endoscope in which an endoscopic observation image captured by a solid-state imaging device built in the tip of a flexible insertion portion is displayed on a monitor screen. In the mirror, a flexible portion in the reference direction is formed near the proximal end of the insertion portion so that the flexibility when bent in the reference direction is larger than the flexibility when bent in the surrounding direction.
[0011]
In addition, the bending prevention member for suppressing that an insertion part bends suddenly from the connection part with an operation part is attached to the base end part of an insertion part, and the reference direction flexible part is formed in the bending prevention member. May be.
[0012]
In that case, the reference direction flexible portion may be formed by making the thickness of the anti-bending member on the reference direction side thinner than the thickness in the peripheral direction.
The reference direction may be a direction corresponding to the upward direction of the endoscopic observation image.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the overall configuration of the electronic endoscope, and the distal end portion of the insertion portion flexible tube 1 is bent by a remote operation from the operation portion 2 connected to the proximal end of the insertion portion flexible tube 1. The bending part 3 is connected. Reference numeral 4 denotes a bending operation lever for performing such a bending operation.
[0014]
The distal end main body 5 connected to the distal end of the bending portion 3 incorporates an objective optical system 6 and a solid-state imaging device 7 for capturing an endoscopic observation image formed by the objective optical system 6. ing.
[0015]
The tip of the cord extending from the operation unit 2 is connected to the video processor 10, and an endoscopic observation image captured by the solid-state imaging device 7 is displayed on the television monitor 11 connected to the video processor 10. Reference numeral 12 denotes an endoscope observation image displayed on the television monitor 11.
[0016]
The “reference direction” in the electronic endoscope of this embodiment is a direction in which the bending portion 3 bends when the bending operation lever 4 is pushed down, and this is referred to as “upward direction”. The endoscope observation image 12 displayed on the television monitor 11 is set so that the upper side of the imaging surface of the solid-state imaging device 7 is always on.
[0017]
The connecting portion between the insertion portion flexible tube 1 and the operation portion 2 is a bend preventing member made of a resilient rubber material or the like so that the insertion portion flexible tube 1 does not bend suddenly with a small radius of curvature at that portion. 8 is attached in a state surrounding the vicinity of the proximal end of the insertion portion flexible tube 1.
[0018]
The anti-bending member 8 is formed in a tapered cylindrical shape in which a portion adjacent to the operation portion 2 is thickest and the thickness gradually decreases toward the front side. However, as shown in FIG. Only 8a) has a shape that is cut off from the outer surface side and is thinner than the other parts.
[0019]
As shown in FIG. 1, the anti-bending member 8 is attached so that the thin portion 8a (reference direction flexible portion) faces in the “upward direction” that is the reference direction of the electronic endoscope.
[0020]
As a result, the connection portion between the insertion portion flexible tube 1 and the operation portion 2 is more flexible when attempting to bend upward (and downward) than when bending toward another direction. Big and easy to bend.
[0021]
Therefore, as shown in FIG. 3, the operator operates the operation unit 2 in any orientation while the operation unit 2 is in the middle of inserting and examining the endoscope into the patient 100. If the folding member 8 is slightly bent and bent in a gripped state, it can be felt that it bends lighter than others only when it is performed "upward".
[0022]
Therefore, the operator can easily recognize the “upward direction” of the endoscope with only the touch of the hand without looking at the operation unit 2, thereby the endoscope observation image 12 displayed on the television monitor 11. Therefore, the operation of the bending operation lever 4 and the insertion operation of the insertion portion flexible tube 1 can be performed as intended.
[0023]
Note that the present invention is not limited to the above-described embodiment. For example, the reference direction of the electronic endoscope does not necessarily need to be one “upward” direction. For example, as shown in FIG. The thin portions 8a may be formed on the member 8 at 90 ° intervals, and the four directions of top, bottom, left, and right may be used as reference directions.
[0024]
【The invention's effect】
According to the present invention, in the vicinity of the proximal end of the insertion portion, the flexible portion in the reference direction that is larger in flexibility when bent in the reference direction of the endoscopic observation image than in the case where it is bent in the surrounding direction is formed. Therefore, even if the operation unit is in any orientation, if the operator gently bends the vicinity of the proximal end of the insertion portion flexible tube while holding the operation unit, it will be in the reference direction. Only when it is done, the hand feels lighter than others, so the operator can easily recognize the standard direction of the endoscope and the orientation of the endoscopic observation image displayed on the monitor screen and the patient It is possible to easily and reliably determine the correspondence with the body orientation.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an electronic endoscope according to an embodiment of the present invention.
FIG. 2 is a perspective view of a bend preventing member of the electronic endoscope according to the embodiment of the present invention.
FIG. 3 is a schematic view of a usage state of the electronic endoscope according to the embodiment of the present invention.
FIG. 4 is a perspective view of another example of the folding preventing member of the electronic endoscope according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insertion part flexible tube 2 Operation part 3 Bending part 4 Bending operation lever 7 Solid-state image sensor 8 Folding prevention member 8a Thin part (reference direction flexible part)
11 TV monitor 12 Endoscopic observation image

Claims (1)

可撓性挿入部の先端に内蔵された固体撮像素子により撮像された内視鏡観察画像がモニタ画面に表示される電子内視鏡であって、上記挿入部が上記操作部との連結部分から急激に曲がるのを抑制するための折れ止め部材が上記挿入部の基端部分に取り付けられたものにおいて、
上記内視鏡観察画像の上方向に対応する方向を基準方向とした時、
上記挿入部の基端付近が上記基準方向へ曲げられる場合の柔軟性がその周囲の方向へ曲げられる場合の柔軟性より大きくなるように、上記折れ止め部材の上記基準方向側の肉厚がその周囲の方向の肉厚と比べて薄く形成されていることを特徴とする電子内視鏡。
An electronic endoscope in which an endoscopic observation image captured by a solid-state imaging device built in a distal end of a flexible insertion portion is displayed on a monitor screen, wherein the insertion portion is connected from a connection portion with the operation portion. In what is attached to the proximal end portion of the insertion portion a folding stop member for suppressing sudden bending ,
When the direction corresponding to the upper direction of the endoscopic observation image is a reference direction,
The insertion portion near the proximal end larger than flexibility in flexibility when flexed to the reference direction is bent in the direction of its surroundings Kunar so on, the thickness of the reference direction of the bending prevention member An electronic endoscope characterized in that it is formed thinner than the thickness in the surrounding direction .
JP2001075449A 2001-03-16 2001-03-16 Electronic endoscope Expired - Fee Related JP4668440B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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JP4668440B2 true JP4668440B2 (en) 2011-04-13

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04240435A (en) * 1991-01-24 1992-08-27 Asahi Optical Co Ltd Endoscope
JPH10286228A (en) * 1997-04-15 1998-10-27 Olympus Optical Co Ltd Image-pickup device for endoscope
JPH10286229A (en) * 1997-04-16 1998-10-27 Olympus Optical Co Ltd Image-pickup device for endoscope

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04240435A (en) * 1991-01-24 1992-08-27 Asahi Optical Co Ltd Endoscope
JPH10286228A (en) * 1997-04-15 1998-10-27 Olympus Optical Co Ltd Image-pickup device for endoscope
JPH10286229A (en) * 1997-04-16 1998-10-27 Olympus Optical Co Ltd Image-pickup device for endoscope

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