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JP2006218155A - Bending structure of electronic endoscope and universal tube for electronic endoscope - Google Patents

Bending structure of electronic endoscope and universal tube for electronic endoscope
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JP2006218155A
JP2006218155AJP2005035681AJP2005035681AJP2006218155AJP 2006218155 AJP2006218155 AJP 2006218155AJP 2005035681 AJP2005035681 AJP 2005035681AJP 2005035681 AJP2005035681 AJP 2005035681AJP 2006218155 AJP2006218155 AJP 2006218155A
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universal tube
electronic endoscope
tube
hole
universal
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Yukihiro Ishizuka
之宏 石塚
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Pentax Corp
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Pentax Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To support a breaking prevention part by constantly putting the breaking prevention part on the root part between the thumb and the forefinger of the left hand despite the size and shape of the hand of an operator and to constantly retain the fingers of the operator in optimal positions. <P>SOLUTION: This electronic endoscope is provided with an insertion tube to be introduced inside an object, an operation part for extending the insertion tube, the universal tube extending from the operation part and having a connector detachably attached to a video processor at one end part, and the breaking prevention part disposed at the extension part of the universal tube from the operation part and bored with a linear through-hole for internally inserting the other end of the universal tube. The breaking prevention part is so formed that the distance from the axis of the through-hole part to the outer circumferential part is not uniform; and is turned relative to the operation part and the universal tube. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Translated fromJapanese

本発明は、操作部からユニバーサルチューブが延出する電子内視鏡に関し、特にユニバーサルチューブの折れ止め構造に関する。  The present invention relates to an electronic endoscope in which a universal tube extends from an operation section, and more particularly to a universal tube folding prevention structure.

電子内視鏡では、一般的に、挿入部とユニバーサルチューブとが互いに略直交する関係で操作部から延出し、ユニバーサルチューブの内部にはCCD(固体撮像素子)で変換されたデジタル信号を伝送するCCDケーブルと、照明光を伝送するためのライトガイドファイババンドルと、が挿通されている。このユニバーサルチューブの一方の端部にはビデオプロセッサに接続されるコネクタが設けられている。  In an electronic endoscope, in general, an insertion portion and a universal tube extend from an operation portion so as to be substantially orthogonal to each other, and a digital signal converted by a CCD (solid-state imaging device) is transmitted inside the universal tube. A CCD cable and a light guide fiber bundle for transmitting illumination light are inserted. A connector connected to the video processor is provided at one end of the universal tube.

このような電子内視鏡は、挿入部を鉛直方向にほぼ平行に立てて使用することが多く、この状態ではユニバーサルチューブは水平方向にほぼ平行に操作部から延出する。このユニバーサルチューブは、可撓性の材料を用いることによって、自由な配置が可能となり、作業性を確保しつつ省スペース化を実現している。  In many cases, such an electronic endoscope is used with its insertion portion standing substantially parallel to the vertical direction. In this state, the universal tube extends from the operation portion substantially parallel to the horizontal direction. The universal tube can be freely arranged by using a flexible material, and space saving is realized while ensuring workability.

一方、操作部には、円錐台形状又は円柱形状であって硬性の折れ止め部が、その軸がユニバーサルチューブの延出方向と一致するように固定されている。この折れ止め部に、一方の端部にコネクタが接続されたユニバーサルチューブの他方の端部を内挿することによって、ユニバーサルチューブの延出方向を定めるとともに、水平方向に延出するユニバーサルチューブがその自重によって操作部からの延出部分において折れ曲がることを防止している。操作者は、折れ止め部を左手の親指と人差し指の付け根に載せて折れ止め部を支えつつ、操作部を把持して操作を行うことが多い。
特開平01−227735号公報
On the other hand, the operation portion is fixed to a frustoconical shape or a columnar shape and has a rigid bending prevention portion so that its axis coincides with the extending direction of the universal tube. By inserting the other end of the universal tube having a connector connected to one end into the anti-folding portion, the universal tube extending direction is determined while the universal tube extending direction is determined. It is prevented from being bent at the extended part from the operation part by its own weight. In many cases, an operator performs an operation by holding the operation unit while placing the anti-folding unit on the base of the thumb and forefinger of the left hand and supporting the anti-folding unit.
JP-A-01-227735

しかしながら、上述の電子内視鏡では、操作者の手の大きさや形状と、操作部に設けた操作ボタンの配置との関係によっては、折れ止め部と操作者の手の間に隙間があくことにより操作部を保持しにくくなる。これに対して、折れ止め部との隙間をなくすように操作者の手の位置を変えると、操作者の指が操作ボタンから遠ざかってしまうため作業性が低下する。  However, in the above-described electronic endoscope, there is a gap between the folding prevention portion and the operator's hand depending on the relationship between the size and shape of the operator's hand and the arrangement of the operation buttons provided on the operation portion. This makes it difficult to hold the operation unit. On the other hand, if the position of the operator's hand is changed so as to eliminate the gap with the anti-folding portion, the operator's finger moves away from the operation button, so that workability is reduced.

上記課題を解決するために、本発明の電子内視鏡においては、対象物内部に導入される挿入部と、挿入部が延出する操作部と、操作部から延出し、ビデオプロセッサに対して着脱可能とされたコネクタを一端部に備えたユニバーサルチューブと、操作部からのユニバーサルチューブの延出部分に配置され、ユニバーサルチューブの他端部が内挿される直線状の貫通孔部が穿設された折れ止め部と、を備え、折れ止め部は、貫通孔部の軸から外周部までの距離が均一ではなく、かつ、操作部及びユニバーサルチューブに対して相対回動可能であることを特徴としている。  In order to solve the above problems, in the electronic endoscope of the present invention, an insertion portion introduced into an object, an operation portion from which the insertion portion extends, an extension from the operation portion, and a video processor A universal tube with a detachable connector at one end and a linear through-hole that is placed in the extension of the universal tube from the operation section and into which the other end of the universal tube is inserted. A folding stop portion, and the folding stop portion is not uniform in distance from the shaft of the through-hole portion to the outer peripheral portion, and can be rotated relative to the operation portion and the universal tube. Yes.

上記折れ止め部は、ユニバーサルチューブが内挿されたときに、操作部から遠ざかるにつれて貫通孔部の軸方向直交断面の面積が小さくなるように形成することが好ましい。  It is preferable that the anti-bending portion is formed such that when the universal tube is inserted, the area of the cross section perpendicular to the axial direction of the through-hole portion decreases as the distance from the operation portion increases.

上記折れ止め部は、ユニバーサルチューブが内挿されたときに、操作部側の外面と接触するように配置できる。  The anti-folding portion can be arranged so as to come into contact with the outer surface on the operation portion side when the universal tube is inserted.

上記挿入部とユニバーサルチューブは互いに直交するように配置することができる。  The insertion part and the universal tube can be arranged to be orthogonal to each other.

本発明の電子内視鏡用ユニバーサルチューブの折れ止め構造は、ビデオプロセッサに対して着脱可能とされたコネクタを一端部に備えたユニバーサルチューブを、電子内視鏡の操作部から延出する部分において、ユニバーサルチューブが内挿される直線状の貫通孔部が穿設された折れ止め部に内挿してなり、折れ止め部は、貫通孔部の軸から外周部までの距離が均一ではなく、かつ、操作部及びユニバーサルチューブに対して相対回動可能であることを特徴としている。  In the folding structure of the universal tube for an electronic endoscope according to the present invention, the universal tube having a connector that can be attached to and detached from the video processor at one end is extended from the operation part of the electronic endoscope. , The linear through-hole part into which the universal tube is inserted is inserted into the folding part, and the folding part is not uniform in the distance from the axis of the through-hole part to the outer periphery, and It is characterized in that it can rotate relative to the operation unit and the universal tube.

本発明によると、折れ止め部を操作部及びユニバーサルチューブに対して相対回動可能とし、かつ、ユニバーサルチューブの端部が挿入される貫通孔部の軸から外周部までの距離を不均一としたことにより、操作者の手の大きさや形状によらずに、常に折れ止め部を左手の親指と人差し指の付け根に載せて折れ止め部を支えることができ、かつ、操作者の指を最適な位置に常に保持することができる。  According to the present invention, the anti-folding portion can be rotated relative to the operation portion and the universal tube, and the distance from the axis of the through hole portion into which the end portion of the universal tube is inserted to the outer peripheral portion is made non-uniform. Therefore, regardless of the size and shape of the operator's hand, the folding part can always be placed on the base of the left thumb and forefinger to support the folding part, and the operator's finger can be placed in the optimum position. Can always hold on.

以下、本発明にかかる実施形態を図面を参照しつつ詳しく説明する。
この実施形態に係る電子内視鏡1は、図1に示すように、吸引、湾曲を行うための操作部10と、生体(対象物)内に挿入される挿入部30と、ユニバーサルチューブ70と、折れ止め部80と、を有する。
Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the electronic endoscope 1 according to this embodiment includes anoperation unit 10 for performing suction and bending, aninsertion unit 30 inserted into a living body (object), auniversal tube 70, and the like. And abend preventing portion 80.

操作部10は、吸引ボタン11と、左右湾曲操作ノブ13a及び上下湾曲操作ノブ13bからなる湾曲操作ノブ13を備えている。吸引ボタン11を押し込むと、先端硬性部40の前面に開口する鉗子チャネル(不図示)から吸引が行われ、患部に対する洗浄水や粘液等の除去や、体腔内空気の排除が行われる。  Theoperation unit 10 includes asuction button 11 and abending operation knob 13 including a left / rightbending operation knob 13a and an up / downbending operation knob 13b. When thesuction button 11 is pushed in, suction is performed from a forceps channel (not shown) that opens to the front surface of the distalrigid portion 40, and cleaning water, mucus, and the like are removed from the affected area, and air in the body cavity is removed.

挿入部30は、挿入部30を外装する可撓管部50、湾曲部60、先端硬性部40により構成されている。挿入部には、前方の患部に照明光を照射するためのライトガイドファイババンドル(不図示)、患部の画像が結像するCCD(固体撮像素子)(不図示)で生成されたデジタル信号を伝送するCCDケーブル(不図示)、及び鉗子チャネルチューブ(不図示)が内挿されている。  Theinsertion portion 30 includes aflexible tube portion 50, abending portion 60, and a distal endrigid portion 40 that sheathes theinsertion portion 30. The insertion part transmits a digital signal generated by a light guide fiber bundle (not shown) for irradiating illumination light to the affected area in front, and a CCD (solid-state imaging device) (not shown) that forms an image of the affected area. A CCD cable (not shown) and a forceps channel tube (not shown) are inserted.

挿入部30と操作部10の間に配置される鉗子口20には、生検用鉗子やブラシが挿入される。鉗子口20に挿入された生検用鉗子やブラシは、鉗子チャネルチューブ内を挿通されて先端硬性部40の鉗子チャネル(不図示)から外部へ延出する。  A biopsy forceps and a brush are inserted into the forceps opening 20 disposed between theinsertion portion 30 and theoperation portion 10. The biopsy forceps and the brush inserted into theforceps port 20 are inserted into the forceps channel tube and extend to the outside from the forceps channel (not shown) of the distal endrigid portion 40.

操作者は、左右湾曲操作ノブ13aを回動することによって湾曲部60を左右方向に湾曲させることができ、上下湾曲操作ノブ13bを回動することによって湾曲部60を上下方向に湾曲させることができる。これにより、操作者は湾曲部60を所望の角度、方向に湾曲させることができる。  The operator can bend thebending portion 60 in the left-right direction by turning the left / rightbending operation knob 13a, and can bend thebending portion 60 in the up / down direction by turning the up / downbending operation knob 13b. it can. Thereby, the operator can bend thebending portion 60 in a desired angle and direction.

ユニバーサルチューブ70は、弾性材料(可撓性材料)(例えばポリウレタンエラストマー)からなる管状部材であって、一方の端部71にビデオプロセッサ(不図示)に対して着脱可能とされたコネクタ75を備え、他方の端部72は出口管部15内に挿通され、操作部10内の所定位置に固定される。この出口管部15は、操作部10の外面を貫通し、かつ、挿入部と直交する方向に延びるように設けられている。コネクタ75からは、CCDケーブルとライトガイドファイババンドルがユニバーサルチューブ70内に挿通され、これらは出口管部15から操作部10内を経て挿入部30に内挿されている。  Theuniversal tube 70 is a tubular member made of an elastic material (flexible material) (for example, polyurethane elastomer), and includes aconnector 75 that can be attached to and detached from a video processor (not shown) at oneend 71. Theother end portion 72 is inserted into theoutlet pipe portion 15 and fixed at a predetermined position in theoperation portion 10. Theoutlet pipe portion 15 is provided so as to penetrate the outer surface of theoperation portion 10 and extend in a direction orthogonal to the insertion portion. A CCD cable and a light guide fiber bundle are inserted into theuniversal tube 70 from theconnector 75, and these are inserted into theinsertion portion 30 from theoutlet pipe portion 15 through theoperation portion 10.

図2及び図3に示す折れ止め部80は、弾性力のあるゴム系の材料(例えばJISゴム硬度が40〜65°程度の範囲のニトリルゴム、クロロプレンゴム、又はポリウレタンゴム)からなり、直線状に延びる貫通孔部81が穿孔されている。この貫通孔部81の内部には、ユニバーサルチューブ70が挿通される。ユニバーサルチューブ70は貫通孔部81と摺動しつつ貫通孔部81の軸81aの周りに回動することができるとともに、貫通孔部81の軸81aの方向に移動することができる。さらに、回動または移動していないときは、自身の弾性によりユニバーサルチューブ70が貫通孔部81の内面に接触してその位置が保持される。折れ止め部80は、貫通孔部81が延びる方向において、貫通孔部81の軸81aの方向に直交する断面の面積が小さくなるような形状を有している。さらに、図3に示す貫通孔部81の軸81aの方向に直交する断面においては、貫通孔部81の軸81aから外周(外周部)82までの距離を不均一としている。折れ止め部80は、その貫通孔部81とユニバーサルチューブ70の外面を摺接させつつ移動させて、出口管部15に近接する位置に配置される。このように配置することにより、ユニバーサルチューブ70は挿入部30に対して直交するように配置される。  2 and 3 is made of an elastic rubber-based material (for example, nitrile rubber, chloroprene rubber, or polyurethane rubber having a JIS rubber hardness in the range of about 40 to 65 °), and has a linear shape. A through-hole portion 81 extending in the direction is drilled. Theuniversal tube 70 is inserted into the through-hole portion 81. Theuniversal tube 70 can slide around theshaft 81 a of the through-hole portion 81 while sliding with the through-hole portion 81 and can move in the direction of theshaft 81 a of the through-hole portion 81. Furthermore, when it is not rotating or moving, theuniversal tube 70 comes into contact with the inner surface of the through-hole portion 81 due to its own elasticity, and the position is maintained. Theanti-bending portion 80 has such a shape that the cross-sectional area perpendicular to the direction of theaxis 81a of the through-hole portion 81 is reduced in the direction in which the through-hole portion 81 extends. Furthermore, in the cross section orthogonal to the direction of theshaft 81a of the throughhole portion 81 shown in FIG. 3, the distance from theshaft 81a of the throughhole portion 81 to the outer periphery (outer peripheral portion) 82 is not uniform. Thebend preventing part 80 is disposed at a position close to theoutlet pipe part 15 by moving the throughhole part 81 and the outer surface of theuniversal tube 70 while sliding. By arranging in this way, theuniversal tube 70 is arranged so as to be orthogonal to theinsertion portion 30.

以上のように、ユニバーサルチューブ70を、操作部10から延出する部分、すなわち出口管部15から延出する部分、において、ユニバーサルチューブ70を折れ止め部80の貫通孔部81に内挿することにより、ユニバーサルチューブ70の折れ止め構造を形成する。電子内視鏡1の使用時には、図4に示すように、折れ止め部を操作者の左手の親指と人差し指の付け根に載せて折れ止め部を支えつつ、左手の手のひらと親指以外の4本の指で包むように操作部10を把持する。上述のように折れ止め部80は、貫通孔部81の軸81aの方向に直交する断面においては、貫通孔部81の軸81aから外周(外周部)82までの距離を不均一としている。このため、折れ止め部80をユニバーサルチューブ70に対して相対回動させることにより、折れ止め部80と操作者との左手との間隔を所望量とすることができる。したがって、操作者の手の大きさや形状に応じて、操作者が作業しやすく、かつ、折れ止め部を確実に支持できるように、折れ止め部80とユニバーサルチューブ70との配置関係を設定することができる。  As described above, theuniversal tube 70 is inserted into the through-hole portion 81 of theanti-folding portion 80 in the portion extending from theoperation portion 10, that is, the portion extending from theoutlet pipe portion 15. Thus, a folding prevention structure for theuniversal tube 70 is formed. When using the electronic endoscope 1, as shown in FIG. 4, the folding part is placed on the thumb and index finger base of the operator's left hand and the folding part is supported, while the four parts other than the palm of the left hand and the thumb are supported. Theoperation unit 10 is gripped so as to be wrapped with a finger. As described above, in the cross section orthogonal to the direction of theshaft 81a of the through-hole portion 81, theanti-bending portion 80 makes the distance from theshaft 81a of the through-hole portion 81 to the outer periphery (outer peripheral portion) 82 nonuniform. For this reason, the space | interval of thefolding prevention part 80 and the left hand of an operator can be made into a desired quantity by rotating thefolding prevention part 80 relatively with respect to theuniversal tube 70. FIG. Therefore, according to the size and shape of the operator's hand, the positional relationship between theanti-folding portion 80 and theuniversal tube 70 is set so that the operator can easily work and can reliably support the anti-folding portion. Can do.

以下に変形例について説明する。
折れ止め部80は、貫通孔部81の軸81aから外周82までの距離が不均一であれば、円筒形状であっても良い。
また、出口管部15に代えて操作部10の外面上にユニバーサルチューブを挿通させる孔部を設け、折れ止め部80を操作部10の外面(操作部から延出する部分)に接触させてもよい。
A modification will be described below.
As long as the distance from theshaft 81a of the through-hole portion 81 to theouter periphery 82 is not uniform, thefolding preventing portion 80 may have a cylindrical shape.
Alternatively, a hole for allowing the universal tube to be inserted may be provided on the outer surface of theoperation unit 10 in place of theoutlet pipe unit 15, and thefolding preventing unit 80 may be brought into contact with the outer surface of the operation unit 10 (part extending from the operation unit). Good.

本発明について上記実施形態を参照しつつ説明したが、本発明は上記実施形態に限定されるものではなく、改良の目的または本発明の思想の範囲内において改良または変更が可能である。  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

本発明の実施形態に係る電子内視鏡の全体の構成を示す概観図である。1 is an overview diagram showing an overall configuration of an electronic endoscope according to an embodiment of the present invention.本発明の実施形態に係る折れ止め部の内部構造を示す、貫通孔部の軸を含む面に沿った断面図である。It is sectional drawing along the surface containing the axis | shaft of a through-hole part which shows the internal structure of the bending prevention part which concerns on embodiment of this invention.図2のIII−III線に沿った断面図である。It is sectional drawing along the III-III line of FIG.本発明の実施形態に係る電子内視鏡の操作部を操作者が把持した状態を示す図である。It is a figure showing the state where the operator grasped the operation part of the electronic endoscope concerning the embodiment of the present invention.

符号の説明Explanation of symbols

1 電子内視鏡
10 操作部
15 出口管部
30 挿入部
70 ユニバーサルチューブ
75 コネクタ
80 折れ止め部
81 貫通孔部
81a 軸
82 外周(外周部)

DESCRIPTION OF SYMBOLS 1Electronic endoscope 10Operation part 15Outlet pipe part 30Insertion part 70Universal tube 75Connector 80Folding prevention part 81 Through-holepart 81a Shaft 82 Outer periphery (outer peripheral part)

Claims (5)

Translated fromJapanese
対象物内部に導入される挿入部と、
前記挿入部が延出する操作部と、
前記操作部から延出し、ビデオプロセッサに対して着脱可能とされたコネクタを一端部に備えたユニバーサルチューブと、
前記操作部からの前記ユニバーサルチューブの延出部分に配置され、前記ユニバーサルチューブの他端部が内挿される直線状の貫通孔部が穿設された折れ止め部と、
を備える電子内視鏡であって
前記折れ止め部は、前記貫通孔部の軸から外周部までの距離が均一ではなく、かつ、前記操作部及び前記ユニバーサルチューブに対して相対回動可能であることを特徴とする電子内視鏡。
An insertion part introduced into the object;
An operation part from which the insertion part extends;
A universal tube provided at one end with a connector extending from the operation section and made attachable to and removable from the video processor;
An anti-bending portion that is disposed in an extending portion of the universal tube from the operation portion and in which a linear through-hole portion into which the other end portion of the universal tube is inserted;
In the electronic endoscope, the distance between the shaft of the through-hole portion and the outer peripheral portion is not uniform, and the folding preventing portion is rotatable relative to the operation portion and the universal tube. An electronic endoscope characterized by that.
前記折れ止め部は、前記ユニバーサルチューブが内挿されたときに、前記操作部から遠ざかるにつれて前記貫通孔部の軸方向直交断面の面積が小さくなる請求項1記載の電子内視鏡。2. The electronic endoscope according to claim 1, wherein when the universal tube is inserted, the area of the cross section perpendicular to the axial direction of the through-hole portion decreases as the anti-bending portion moves away from the operation portion.前記折れ止め部は、前記ユニバーサルチューブが内挿されたときに、前記操作部側の外面と接触する請求項1又は請求項2記載の電子内視鏡。The electronic endoscope according to claim 1, wherein the anti-bending portion contacts an outer surface on the operation portion side when the universal tube is inserted.前記挿入部と前記ユニバーサルチューブは互いに直交するように配置されている請求項1〜3のいずれか1項記載の電子内視鏡。The electronic endoscope according to claim 1, wherein the insertion portion and the universal tube are disposed so as to be orthogonal to each other.ビデオプロセッサに対して着脱可能とされたコネクタを一端部に備えたユニバーサルチューブを、電子内視鏡の操作部から延出する部分において、前記ユニバーサルチューブが内挿される直線状の貫通孔部が穿設された折れ止め部に内挿してなり、前記折れ止め部は、前記貫通孔部の軸から外周部までの距離が均一ではなく、かつ、前記操作部及び前記ユニバーサルチューブに対して相対回動可能であることを特徴とする電子内視鏡用ユニバーサルチューブの折れ止め構造。

A linear tube having a connector that can be attached to and detached from the video processor at one end is extended from the operation portion of the electronic endoscope with a linear through hole into which the universal tube is inserted. It is inserted in the provided anti-bending part, and the anti-bending part is not uniform in the distance from the shaft of the through-hole part to the outer peripheral part, and is relatively rotated with respect to the operation part and the universal tube. A structure for preventing folding of a universal tube for an electronic endoscope, which is possible.

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