JP4723075B2 - Endoscope forceps plug - Google Patents

Endoscope forceps plug Download PDF

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Publication number
JP4723075B2
JP4723075B2 JP2000338498A JP2000338498A JP4723075B2 JP 4723075 B2 JP4723075 B2 JP 4723075B2 JP 2000338498 A JP2000338498 A JP 2000338498A JP 2000338498 A JP2000338498 A JP 2000338498A JP 4723075 B2 JP4723075 B2 JP 4723075B2
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Japan
Prior art keywords
plug
receiving hole
slit
lid
treatment instrument
Prior art date
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Expired - Lifetime
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JP2000338498A
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Japanese (ja)
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JP2002143086A (en
Inventor
直哉 大内
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Hoya Corp
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Hoya Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00131—Accessories for endoscopes
    • A61B1/00137—End pieces at either end of the endoscope, e.g. caps, seals or forceps plugs

Description

【０００１】
【発明の属する技術分野】
この発明は、内視鏡の処置具挿通路の入口に配置される内視鏡の鉗子栓に関する。
【０００２】
【従来の技術】
内視鏡の鉗子栓は、処置具挿通路を介して体内汚液等が噴出しないように処置具挿通路の入口部分の栓をし、しかも処置具挿通路に処置具を挿脱する際には栓を開閉する特別な操作を必要としないものであることが望ましい。
【０００３】
そこで内視鏡の鉗子栓は一般に、内視鏡の処置具挿通路の入口部分に着脱自在に取り付けられる弾力性のある材料からなる蓋体に、処置具挿通路の入口部分に形成された栓受け孔に対して嵌め込み及び離脱自在な栓部が形成され、通常は自己の弾力性によって閉じた状態を維持し、処置具挿通路に挿通される処置具によって押し広げられる「−」状のスリットが栓部に形成されている。
【０００４】
そして、処置具が挿通されていない通常状態においてスリットが確実に閉じた状態になるように、栓受け孔の断面形状を例えば長円形状に形成して、栓部が栓受け孔に嵌め込まれた状態のときに、スリットが栓受け孔の短径壁から閉じ方向に力を受けるようになっている。
【０００５】
【発明が解決しようとする課題】
上述のような栓部が形成された蓋体は、取り扱い上及び機能上等の要請から栓受け孔に対して軸線周りに回転自在に取り付けられている。
【０００６】
そのため、栓体が栓受け孔に対して所定の向きから相対的に９０°回転した状態で嵌め込まれると、栓受け孔からスリットに閉じ方向の力が作用しないのみならず、スリットを長手方向に圧迫する力が作用してスリットが開き、処置具挿通路側から体内汚液等が噴出してしまう。
【０００７】
そこで本発明は、スリットが形成された栓体が栓受け孔に対してどのように回転した状態に嵌め込まれても、栓受け孔側からスリットに常に閉じ方向の力が作用して体内汚液等が噴出しない衛生的な内視鏡の鉗子栓を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記の目的を達成するため、本発明の内視鏡の鉗子栓は、内視鏡の処置具挿通路の入口部分に着脱自在に取り付けられる弾力性のある材料からなる蓋体に、処置具挿通路の入口部分に形成された栓受け孔に対して嵌め込み及び離脱自在な栓部が形成され、処置具挿通路に挿通される処置具によって押し広げられる「−」状のスリットが栓部に形成された内視鏡の鉗子栓において、栓受け孔を奥側へ漸次窄まる円錐状に形成すると共に、栓部を、スリットの長手方向以外の部分は栓受け孔にきつく嵌まる円錐状に形成し、スリットの長手方向の部分は栓受け孔との間に隙間が生じるように形成したものである。
【０００９】
なお、栓受け孔部分の外壁の外周面に円周溝が形成されて、その円周溝に軸線周りに回転自在に係合する環状部が蓋体と連結されていてもよく、栓受け孔部分が弾力性のある材料によって形成されて、処置具挿通路の入口に突設された口金に対して着脱自在であってもよい。
【００１０】
【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５は内視鏡を示しており、可撓管によって外装された挿入部１の基端が操作部２の下端に連結されている。
【００１１】
挿入部１内に挿通配置された処置具挿通路３の先端は挿入部１の先端において外部に開口し、処置具挿通路３の入口に配置された鉗子栓１０が、操作部２の下端部分から斜め上方に突出している。
【００１２】
図１と図２は、処置具挿通路３の入口端部に設けられた入口口金３０に着脱自在に取り付けられた鉗子栓１０を示しており、図１は正面断面図、図２は側面断面図である。
【００１３】
鉗子栓１０は、各々が弾力性のあるゴム材によって形成された樽状部材１１と蓋状部材１２とを、直列に配置して構成されている。
樽状部材１１は、その下端内周面に突設された弾性突起１３が入口口金３０の口元近傍に形成された第１の円周溝３２に嵌め込まれており、弾性突起１３の周辺を弾性変形させることにより、第１の円周溝３２に係脱させることができる。
【００１４】
樽状部材１１には、中心に小孔１５が形成された閉鎖膜１４が入口口金３０の開口端に対向する位置に形成されており、図示されていない処置具が小孔１５を押し広げながら処置具挿通路３内に挿通される。
【００１５】
蓋状部材１２は、樽状部材１１の外周面に形成された第２の円周溝３３に弾力的に着脱自在に且つ軸線周りに回転自在に取り付けられた環状部２１に、柔軟な連結バンド部２２を介して蓋体部２３が連結されて構成されている。
【００１６】
蓋体部２３の中央部分には、樽状部材１１の入口開口部分である栓受け孔１６に対して嵌め込み及び離脱自在な栓部２４が、蓋体部２３に対して一体に下方に向けて突設されている。栓部２４の底部分は閉鎖膜２６になっていて、その中央に「−」状のスリット２７が形成されている。
【００１７】
樽状部材１１の栓受け孔１６は奥側へ漸次窄まる円錐状に形成されており、そこに嵌め込まれる蓋状部材１２の栓部２４は、スリット２７の長手方向以外の部分が栓受け孔１６にきつく嵌まる円錐状に形成されている。
【００１８】
そしてスリット２７の長手方向の部分は、栓部２４を奥側から見た状態が図示されている図３にも示されるように、円弧部分を平面状に削ぎ落とした形状に形成されていて、栓受け孔１６との間に隙間が生じるようになっている。各図において２４ａがその平面部である。
【００１９】
図１と図２に示されるように、樽状部材１１の栓受け孔１６部分の外周面には円周溝１７が形成されており、その円周溝１７に弾力的に係脱自在な係合突起２９が、蓋体部２３の下面側から内方に向けて、栓部２４を囲んで環状に突出して形成されている。
【００２０】
したがって、蓋体部２３は樽状部材１１に対して軸線周りに回転自在であるが、どのような向きであっても、係合突起２９が円周溝１７に係合した状態においては、蓋体部２３の栓部２４が樽状部材１１の栓受け孔１６に嵌まり込んだ状態になる。
【００２１】
その時、栓部２４のスリット２７の長手方向以外の部分が円錐状に形成された栓受け孔１６にきつく嵌まり込んだ状態になると共に、スリット２７の長手方向の両端部分においては、平面部２４ａと栓受け孔１６との間に隙間ができて栓部２４が広がる自由性を有している。
【００２２】
その結果、栓部２４が栓受け孔１６にどの様な向きに嵌め込まれても、スリット２７が樽状部材１１の栓受け孔１６側から常に閉じ方向の力を受け、処置具挿通路３側からの体内汚液等の噴出が確実に防止される。
【００２３】
そして、処置具挿通路３に処置具を挿通すれば、通過する処置具によってスリット２７が押し開かれ、処置具が抜き出されればスリット２７は閉鎖膜２６部分の弾性によって元の閉じた状態に戻る。
【００２４】
また、係合突起２９を弾性変形させて円周溝１７から離脱させれば、図４に示されるように、栓部２４が栓受け孔１６から抜け出して、蓋体部２３が樽状部材１１から外れた状態になる。
【００２５】
【発明の効果】
本発明によれば、栓受け孔を奥側へ漸次窄まる円錐状に形成すると共に、栓部を、スリットの長手方向以外の部分は栓受け孔にきつく嵌まる円錐状に形成し、スリットの長手方向の部分は栓受け孔との間に隙間が生じるように形成したことにより、スリットが形成された栓体が栓受け孔に対してどのように回転した状態で嵌め込まれても、栓受け孔側からスリットに常に閉じ方向の力が作用してスリットが確実に閉じ、体内汚液等が噴出しない。
【図面の簡単な説明】
【図１】本発明の実施例の内視鏡の鉗子栓の正面断面図である。
【図２】本発明の実施例の内視鏡の鉗子栓の側面断面図である。
【図３】本発明の実施例の内視鏡の鉗子栓の蓋体部が栓受け孔から取り外された状態の平面図である。
【図４】本発明の実施例の内視鏡の鉗子栓の蓋体部が栓受け孔から取り外された状態の側面断面図である。
【図５】本発明の実施例の内視鏡の全体構成を示す側面図である。
【符号の説明】
３ 処置具挿通路
１０ 鉗子栓
１１ 樽状部材
１２ 蓋状部材
１６ 栓受け孔
２３ 蓋体部
２４ 栓部
２４ａ 平面部
２６ 閉鎖膜
２７ スリット[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscopic forceps plug disposed at an entrance of a treatment instrument insertion passage of an endoscope.
[0002]
[Prior art]
The forceps plug of the endoscope plugs the entrance portion of the treatment instrument insertion passage so that in-vivo sewage or the like does not spout through the treatment instrument insertion passage, and when the treatment instrument is inserted into and removed from the treatment instrument insertion passage. It is desirable that no special operation for opening and closing the stopper is required.
[0003]
Therefore, the forceps plug of an endoscope is generally a plug formed at the entrance portion of the treatment instrument insertion passage on a lid made of a resilient material that is detachably attached to the entrance portion of the treatment instrument insertion passage of the endoscope. A plug part that can be inserted into and removed from the receiving hole is formed. Normally, it is kept closed by its own elasticity, and it is a “-” shaped slit that is pushed out by the treatment instrument inserted into the treatment instrument insertion path. Is formed in the stopper.
[0004]
Then, the cross-sectional shape of the plug receiving hole is formed in, for example, an oval shape so that the slit is securely closed in the normal state where the treatment instrument is not inserted, and the plug portion is fitted into the plug receiving hole. In the state, the slit receives a force in the closing direction from the short diameter wall of the stopper receiving hole.
[0005]
[Problems to be solved by the invention]
The lid body on which the plug portion as described above is formed is attached to the plug receiving hole so as to be rotatable around the axis line from the viewpoint of handling and function.
[0006]
Therefore, when the plug body is fitted in a state of being rotated 90 ° relative to the plug receiving hole relative to the predetermined direction, not only the closing force from the plug receiving hole acts on the slit but also the slit in the longitudinal direction. The pressing force acts to open the slit, and in-body sewage or the like is ejected from the treatment instrument insertion passage side.
[0007]
In view of this, the present invention provides a method in which a closing force is always applied to the slit from the plug receiving hole side, regardless of how the plug formed with the slit is rotated with respect to the plug receiving hole. An object of the present invention is to provide a sanitary endoscope forceps plug that does not spout or the like.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the forceps plug of the endoscope of the present invention is inserted into a lid made of a resilient material that is detachably attached to an entrance portion of a treatment instrument insertion path of the endoscope. A plug part that can be inserted into and removed from the plug receiving hole formed in the entrance part of the passage is formed, and a "-" shaped slit that is pushed and spread by the treatment instrument inserted into the treatment instrument insertion path is formed in the plug part. In the forceps plug of the endoscope, the plug receiving hole is formed in a conical shape that gradually narrows toward the back side, and the plug portion is formed in a conical shape that fits tightly in the plug receiving hole in portions other than the longitudinal direction of the slit The longitudinal portion of the slit is formed so that a gap is formed between the slit and the stopper receiving hole.
[0009]
In addition, a circumferential groove may be formed on the outer peripheral surface of the outer wall of the plug receiving hole portion, and an annular portion that engages with the circumferential groove so as to be rotatable about the axis may be connected to the lid body. The portion may be formed of an elastic material and detachable from a base projecting from the entrance of the treatment instrument insertion path.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 5 shows an endoscope, and the proximal end of the insertion portion 1 covered with a flexible tube is connected to the lower end of the operation portion 2.
[0011]
The distal end of the treatment instrument insertion passage 3 inserted in the insertion portion 1 opens to the outside at the distal end of the insertion portion 1, and the forceps plug 10 disposed at the entrance of the treatment instrument insertion passage 3 is connected to the lower end portion of the operation portion 2. Projecting diagonally upward.
[0012]
1 and 2 show a forceps plug 10 that is detachably attached to an inlet cap 30 provided at an inlet end of the treatment instrument insertion passage 3. FIG. 1 is a front sectional view, and FIG. 2 is a side sectional view. FIG.
[0013]
The forceps plug 10 is configured by arranging a barrel-shaped member 11 and a lid-shaped member 12, each formed of a resilient rubber material, in series.
The barrel-shaped member 11 has an elastic protrusion 13 projecting from the inner peripheral surface of the lower end thereof fitted in a first circumferential groove 32 formed in the vicinity of the mouth of the inlet base 30, and elastically surrounds the elastic protrusion 13. By being deformed, the first circumferential groove 32 can be engaged and disengaged.
[0014]
The barrel-shaped member 11 has a closing film 14 having a small hole 15 formed in the center at a position facing the opening end of the inlet base 30, and a treatment tool (not shown) pushes the small hole 15 wide. It is inserted into the treatment instrument insertion passage 3.
[0015]
The lid-like member 12 has a flexible connecting band on an annular portion 21 which is elastically detachably attached to a second circumferential groove 33 formed on the outer peripheral surface of the barrel-like member 11 and is rotatable about an axis. A lid part 23 is connected via a part 22.
[0016]
In the central part of the lid part 23, a plug part 24 that can be fitted into and removed from the stopper receiving hole 16 that is an inlet opening part of the barrel-shaped member 11 is integrally directed downward with respect to the lid part 23. Projected. The bottom portion of the plug portion 24 is a closing membrane 26, and a "-" shaped slit 27 is formed at the center thereof.
[0017]
The plug receiving hole 16 of the barrel-shaped member 11 is formed in a conical shape gradually narrowing to the back side, and the plug portion 24 of the lid-shaped member 12 fitted therein has a portion other than the longitudinal direction of the slit 27 in the plug receiving hole. 16 is formed in a conical shape that fits tightly.
[0018]
And the part of the longitudinal direction of the slit 27 is formed in the shape which scraped off the circular arc part in the shape of a plane, as shown also in Drawing 3 where the state which looked at plug part 24 from the back side is illustrated, A gap is formed between the stopper receiving hole 16 and the stopper receiving hole 16. In each figure, reference numeral 24a denotes the plane portion.
[0019]
As shown in FIGS. 1 and 2, a circumferential groove 17 is formed on the outer peripheral surface of the stopper receiving hole 16 portion of the barrel-shaped member 11, and the circumferential groove 17 is elastically detachable. A mating protrusion 29 is formed so as to project in an annular shape surrounding the stopper portion 24 from the lower surface side of the lid portion 23 inward.
[0020]
Therefore, the lid portion 23 is rotatable about the axis with respect to the barrel-like member 11, but in any state, when the engagement projection 29 is engaged with the circumferential groove 17, the lid The plug portion 24 of the body portion 23 is fitted into the plug receiving hole 16 of the barrel member 11.
[0021]
At that time, the portion of the plug portion 24 other than the longitudinal direction of the slit 27 is tightly fitted into the conically formed plug receiving hole 16, and the flat portion 24 a is formed at both end portions of the slit 27 in the longitudinal direction. There is a freedom to expand the plug portion 24 by creating a gap between the plug receiving hole 16 and the plug receiving hole 16.
[0022]
As a result, the slit 27 always receives a force in the closing direction from the plug receiving hole 16 side of the barrel-shaped member 11 regardless of the direction in which the plug portion 24 is fitted into the plug receiving hole 16, and the treatment instrument insertion passage 3 side. The ejection of body sewage from the inside is reliably prevented.
[0023]
When the treatment instrument is inserted into the treatment instrument insertion path 3, the slit 27 is pushed open by the passing treatment instrument, and when the treatment instrument is extracted, the slit 27 is originally closed by the elasticity of the closing membrane 26 portion. Return to.
[0024]
Further, if the engaging protrusion 29 is elastically deformed and detached from the circumferential groove 17, as shown in FIG. 4, the plug portion 24 comes out of the plug receiving hole 16, and the lid portion 23 becomes the barrel-shaped member 11. It will be in a state that is out of
[0025]
【The invention's effect】
According to the present invention, the plug receiving hole is formed in a conical shape that gradually narrows toward the back side, and the plug portion is formed in a conical shape that fits tightly in the plug receiving hole at portions other than the longitudinal direction of the slit. The longitudinal part is formed so that a gap is formed between it and the stopper receiving hole, so that even if the plug body in which the slit is formed is fitted to the stopper receiving hole in a rotated state, the stopper receiver A force in the closing direction always acts on the slit from the hole side, so that the slit is securely closed, and the in-body sewage or the like is not ejected.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a forceps plug of an endoscope according to an embodiment of the present invention.
FIG. 2 is a side sectional view of a forceps plug of an endoscope according to an embodiment of the present invention.
FIG. 3 is a plan view showing a state in which a lid portion of a forceps plug of an endoscope according to an embodiment of the present invention is removed from a plug receiving hole.
FIG. 4 is a side cross-sectional view of a state in which a lid body portion of a forceps plug of an endoscope according to an embodiment of the present invention is removed from a plug receiving hole.
FIG. 5 is a side view showing an overall configuration of an endoscope according to an embodiment of the present invention.
[Explanation of symbols]
3 treatment instrument insertion path 10 forceps plug 11 barrel-shaped member 12 lid-shaped member 16 plug receiving hole 23 lid body portion 24 plug portion 24a flat surface portion 26 closure membrane 27 slit

Claims (3)

内視鏡の処置具挿通路の入口部分に着脱自在に取り付けられる弾力性のある材料からなる蓋体に、上記処置具挿通路の入口部分に配置された栓受け孔に対して嵌め込み及び離脱自在な栓部が形成され、上記処置具挿通路に挿通される処置具によって押し広げられる「−」状のスリットが上記栓部に形成された内視鏡の鉗子栓において、
上記栓受け孔を奥側へ漸次窄まる円錐状に形成すると共に、上記栓部を、上記スリットの長手方向以外の部分は全領域において上記栓受け孔にきつく嵌まる円錐状に形成し、上記スリットの長手方向の部分のみは、上記蓋体と上記栓受け孔との間に隙間が生じてその隙間部分に上記栓部が広がることができるように、上記蓋体の外面を削ぎ落とした形状に形成したことを特徴とする内視鏡の鉗子栓。The lid made of a resilient material that is detachably attached to the entrance portion of the treatment instrument insertion passage of the endoscope can be fitted into and removed from the plug receiving hole arranged in the entrance portion of the treatment instrument insertion passage. In an endoscopic forceps plug in which a `` -''- shaped slit formed in the plug portion is formed by a treatment tool inserted into the treatment tool insertion passage and spread by a treatment tool.
The plug receiving hole is formed in a conical shape that gradually narrows toward the back side, and the plug portion is formed in a conical shape that fits tightly into the plug receiving hole in the entire region other than the longitudinal direction of the slit, Only in the longitudinal direction of the slit is a shape in which the outer surface of the lid is scraped off so that a gap is formed between the lid and the stopper receiving hole, and the stopper can spread in the gap. An endoscope forceps plug, characterized in that it is formed into an endoscope. 上記栓受け孔部分の外壁の外周面に円周溝が形成されて、その円周溝に軸線周りに回転自在に係合する環状部が上記蓋体と連結されている請求項１記載の内視鏡の鉗子栓。2. An inner portion according to claim 1, wherein a circumferential groove is formed on an outer peripheral surface of the outer wall of the stopper receiving hole portion, and an annular portion that engages with the circumferential groove so as to be rotatable about an axis is connected to the lid. Endoscopic forceps plug. 上記栓受け孔部分が弾力性のある材料によって形成されて、上記処置具挿通路の入口に突設された口金に対して着脱自在である請求項１又は２記載の内視鏡の鉗子栓。3. The endoscopic forceps plug according to claim 1 or 2, wherein the plug receiving hole portion is formed of an elastic material and is detachable from a base protruding from an inlet of the treatment instrument insertion passage.
JP2000338498A 2000-11-07 2000-11-07 Endoscope forceps plug Expired - Lifetime JP4723075B2 (en)

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US7025721B2 (en) 2004-01-29 2006-04-11 Boston Scientific Scimed, Inc. Endoscope channel cap
JP4648744B2 (en) * 2005-04-12 2011-03-09 Ｈｏｙａ株式会社 Endoscope forceps plug
JP4761813B2 (en) * 2005-04-19 2011-08-31 Ｈｏｙａ株式会社 Endoscope forceps plug
JP4928929B2 (en) * 2006-12-14 2012-05-09 Ｈｏｙａ株式会社 Endoscope forceps plug
JP4904194B2 (en) * 2007-05-08 2012-03-28 Ｈｏｙａ株式会社 Endoscope forceps plug
US9161680B2 (en) 2013-11-26 2015-10-20 Bracco Diagnostics Inc. Disposable air/water valve for an endoscopic device

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JPS59196204U (en) * 1983-06-13 1984-12-27 オリンパス光学工業株式会社 Endoscope
JPS63130038A (en) * 1986-11-19 1988-06-02 オリンパス光学工業株式会社 Forcept plug for endoscope
JPH10155735A (en) * 1996-11-28 1998-06-16 Fuji Photo Optical Co Ltd Forceps cock for endoscope

Patent Citations (3)

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JPS59196204U (en) * 1983-06-13 1984-12-27 オリンパス光学工業株式会社 Endoscope
JPS63130038A (en) * 1986-11-19 1988-06-02 オリンパス光学工業株式会社 Forcept plug for endoscope
JPH10155735A (en) * 1996-11-28 1998-06-16 Fuji Photo Optical Co Ltd Forceps cock for endoscope

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