JP3629005B2 - Endoscope washing device - Google Patents

Endoscope washing device Download PDF

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Publication number
JP3629005B2
JP3629005B2 JP2002024652A JP2002024652A JP3629005B2 JP 3629005 B2 JP3629005 B2 JP 3629005B2 JP 2002024652 A JP2002024652 A JP 2002024652A JP 2002024652 A JP2002024652 A JP 2002024652A JP 3629005 B2 JP3629005 B2 JP 3629005B2
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wire
endoscope
wire brush
brush
pipe
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JP2003225204A (en
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仁 友岡
正雄 鈴木
欣伸 大山
剛人 鈴木
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Koken Co Ltd
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Koken Co Ltd
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Description

【0001】
【発明の属する技術分野】
この発明は、ワイヤブラシを使用する内視鏡洗滌装置に関する。
【0002】
【従来の技術】
特開平7−194533号公報や特開平8−275917号公報には、内視鏡洗滌槽に納まる内視鏡の管路にワイヤブラシを自動挿入して管路内部を洗滌する装置が開示されている。ワイヤは長尺のものであるからリールに巻き取られた状態にあり、管路の長さに応じて必要量が繰り出される。
【0003】
【発明が解決しようとする課題】
前記公知の洗滌装置では、ワイヤの繰り出し量をリールの回転によって制御することがある。ところが、この場合には、ワイヤが重なり合ってリールに巻き取られていたり、重なり合わず巻き取られていたとしてもその巻き取られた状態が一定していないと、リールの回転数とワイヤの繰り出し量とが一定にならず、繰り出し量を正確に制御することができない。また、ワイヤの一端はリールに固定されているから、その固定を解かなければワイヤを交換できず、またそのためにはリールをそれが収納されている部位から取り出さなければならないというように手間のかかることが多い。
【0004】
この発明は、ワイヤブラシを使用する内視鏡洗滌装置の改良に係り、内視鏡の管路に挿入されるワイヤブラシが前進・後退するときの寸法の正確な制御を容易にすることおよびワイヤブラシの交換を容易にすることによって、その内視鏡洗滌装置の取扱い易さを向上させることが課題である。
【0005】
【課題を解決するための手段】
前記課題を解決するためのこの発明は第1発明と第2発明とからなり、これら両発明が対象とするのは、前端と後端とを有するワイヤの前記前端にブラシが取り付けられているワイヤブラシと、前記ワイヤブラシを収納する部位と、前記ブラシを内視鏡の管路に挿入した状態で前記ワイヤブラシ収納部位から前記内視鏡へ向かう方向に前記ワイヤブラシを前進・後退させることができる駆動手段とを有する内視鏡洗滌装置である。
【0006】
かかる内視鏡洗滌装置において、第1発明が特徴とするところは、次のとおりである。前記ワイヤブラシ収納部位は、前端部と後端部とこれら両端部間に延びるパイプ状の中間部とを有し、前記前端部が開放状態にあって前記内視鏡の管路に接続可能に形成され、前記中間部と後端部とのいずれかには前記ワイヤの位置検出手段と前記ワイヤブラシ収納部位内側へ前記内視鏡に対する洗滌水を供給可能であって前記ワイヤブラシ収納部位と交差する方向においてつながる給水管とが設けられており、前記ワイヤの前記後端には前記検出手段に対する作用部が設けられ、前記作用部は前記ワイヤと直交する方向の断面形状が実質的に円形である。
【0007】
かかる内視鏡洗滌装置において、第2発明が特徴とするところは次のとおりである。前記ワイヤブラシ収納部位は、前端部と後端部とこれら両端部間に延びるパイプ状の中間部とを有し、前記前端部が開放状態にあって前記内視鏡の管路に接続可能に形成され、前記中間部と後端部とのいずれかには前記ワイヤの位置検出手段と前記ワイヤブラシ収納部位内側へ前記内視鏡に対する洗滌水を供給可能であって前記ワイヤブラシ収納部位と交差する方向においてつながる給水管とが設けられており、前記ワイヤの前記後端には前記検出手段に対する作用部が設けられ、前記作用部は前記ワイヤが延びる方向に両端部を有し、その両端部の少なくとも一方が前記ワイヤが延びる方向へ向かってとがっている。
【0008】
これら第1、2発明には、次のような好ましい実施態様がある。
(1)前記内視鏡洗滌装置は、前記位置検出手段に前記作用部が作用して生じる前記位置検出手段からの信号に基づいて前記駆動手段を運転または停止させることができる。
(2)前記内視鏡洗滌装置において、前記中間部が光透過性であり、前記位置検出手段が前記中間部を挟んで対向する投光器と受光器とであり、前記作用部が前記投光器からの光を遮るものである。
【0009】
【発明の実施の形態】
添付の図面を参照して、この発明に係る内視鏡洗滌装置の詳細を説明すると、以下のとおりである。
【0010】
図1は、内視鏡洗滌装置が使用されている洗滌槽3の部分破断頂面図であって、洗滌槽3は蓋4が開いた状態にあり、この蓋4がヒンジ5によって洗滌槽3に取り付けられている。洗滌槽3には、使用後の内視鏡2が洗滌のために納められ、給水口13,14からは洗滌水を供給可能である。その洗滌水には、アルカリ水や酸性水、水道水が使用される。これら洗滌水の供給条件は、洗滌槽3に付属する操作パネル(図示せず)によって設定することができる。洗滌槽3内の洗滌水は、排水口15から外へ出る。内視鏡2は慣用のもので、コネクター部17、ユニバーサルコード部18、操作部19、および挿入部21等を有する。操作部19には、鉗子挿入口22、吸引ボタン挿入口23等が設けられている。
【0011】
かかる洗滌槽3の側壁3aからは、フレキシブルな2本の連結管26,226が延び、連結管26,226からは2本のワイヤブラシ31,231が延びている。ワイヤブラシ31,231は、ワイヤ部33,233と、ワイヤ部33,233先端のブラシ部36,236とを有し、それぞれは連結管26,226先端からの進出と後退とが可能である。連結管26,226は、内視鏡2の鉗子挿入口22と吸引ボタン挿入口23とのそれぞれに着脱可能である。ワイヤブラシ31,231は、ワイヤ部33,233がブラシ部36,236とともに内視鏡2の管路の奥部に向かって前進・後退を反復することにより、管路内部をブラッシング洗滌することができる。
【0012】
洗滌水として供給される好ましいアルカリ水はpH11.0以上、酸化還元電位(ORP)−800mV以上のもので、使用後の内視鏡に付着している血液その他のタンパク質の汚れを溶解するために使用される。好ましい酸性水はpH2.2〜2.7、酸化還元電位+1100mV以上、有効塩素濃度20〜60mg/kgのもので、内視鏡2に付着している細菌等を死滅させる殺菌剤として使用される。水道水は、内視鏡2を予めすすぐときや殺菌後にすすぐとき等に使用される。
【0013】
図2は、洗滌槽3の要部斜視図である。洗滌槽3の外側には、この発明に係る内視鏡洗滌装置である第1洗滌装置51と第2洗滌装置52とが取り付けられている。第1洗滌装置51と第2洗滌装置52とは、ほぼ同じ構造を有するもので、以下では第1洗滌装置51についてまず説明する。第1洗滌装置51は、洗滌槽3を外側から囲むように延びるパイプ部56を有し、パイプ部56の前方部分56aには駆動部57が取り付けられ、この駆動部57が洗滌槽3の側壁3aの外側に固定されている。駆動部57からは、洗滌槽3の内側へ第1洗滌装置51の前端部を形成する連結管26が延びている。連結管26の先端には、内視鏡2の鉗子挿入口22(図1参照)に対するアタッチメント59が取り付けられている。パイプ部56の後方部分56bは、第1洗滌装置51の後端部を形成し、洗滌槽3の内側にまで延びた先端には開閉可能な密栓61(図3(a)参照)が取り付けられている。その後方部分56bは、洗滌槽3の側壁3bに水密状態で固定されている。後方部分56bの近傍には、給水管63と電磁弁64とがつながっている。洗滌槽3の内側では、アタッチメント59からワイヤブラシ31の先端部分がのぞいている。
【0014】
図3の(a),(b)は、第1洗滌装置51と第2洗滌装置52との断面図である。第1洗滌装置51では、ワイヤブラシ31のワイヤ部33がパイプ部56における前方部分56aと後方部分56bとの間の中間部分56cの内側でパイプ部56の長さ方向に延び、ワイヤブラシ31のほぼ全長が装置51における連結管26から密栓61に至るまでのワイヤブラシ収納部位に納まっている。ワイヤ部33は、その前端にブラシ部36を有し、後端に遮光部材66を有する。パイプ部56は、その前方部分56aであって駆動部57のやや後方に前部センサ67を有し、後方部分56bであって密栓61のやや前方に後部センサ68を有する。これらセンサ67,68は同じ構造のもので、光透過性のパイプ部56の径方向外側で互いに向かい合う投光器91と受光器92とからなる。図示のワイヤブラシ31は後退した状態にあり、遮光部材66が後部センサ68と向かい合う位置にあって投光器91からの光を遮ってワイヤブラシ31が後退位置にあることを感知させるように作用するもので、感知した後部センサ68は信号を適宜の制御回路を通して駆動部57に伝える。ワイヤブラシ31が前進して遮光部材66が前部センサ67と向かい合う位置に来ると、投光器91からの光を遮ってワイヤブラシ31が前進位置にあることを感知させ、そのときに前部センサ67は信号を駆動部57に伝える。駆動部57は、ハウジング71と、ハウジング71に納まるローラ72とを有し、ハウジング71は、パイプ部56と連結管26との接続部分を除いて水密状態にある。パイプ部56の後方部分56b近傍にパイプ部56と交差する方向からつながる給水管63では、電磁弁64が開閉することによって、パイプ部56の中へアルカリ水、酸性水、および水道水いずれかの洗滌水を供給することができる。
【0015】
図4,5は、駆動部57の頂面図と、同図のV−V線部分断面図である。ただし、図4では、駆動部57におけるハウジング71の蓋73(図3(a)参照)が取り外され、ハウジング71の内部が見える状態にある。駆動部57のローラ72は並列した一対のローラ72a,72bからなり、ローラ72a,72bは適宜の圧力でワイヤブラシ31のワイヤ部33を挟持して回転し、ワイヤブラシ31を前進・後退させることができるとともに、ワイヤブラシ31をパイプ部56に対して挿抜するときには、ブラシ部36を通過させることができる。ローラ72は、駆動ギア74とこれにつながるモータ76とによって回転するもので、モータ76は、前部センサ67および後部センサ68からの信号によって時計方向または反時計方向への回転と、停止とが可能である。
【0016】
このように形成された第1洗滌装置51では、洗滌槽3内部において、連結管26のアタッチメント59を図1における内視鏡2の鉗子挿入口22に固定する。固定するときに、連結管26から突出しているワイヤブラシ31は、鉗子挿入口22に予め挿し込んでおく。続いて、第2洗滌装置52の連結管226のアタッチメント259を内視鏡2の吸引ボタン挿入口23に固定する。洗滌槽3の操作パネルを使って運転を開始すると、給水管63の電磁弁64が開いてパイプ部56の内部にアルカリ水、酸性水、水道水のいずれかがパネルの設定条件に従って供給される。運転開始時のワイヤブラシ31は、遮光部材66が後部センサ68と向かい合う後退した位置にある。運転を開始した駆動手段57では、ローラ72a,72bがワイヤブラシ31を前進・後退運動させつつ繰り出して、内視鏡2の鉗子チャネル(図示せず)内を徐々に前進させる。ワイヤブラシ31の遮光部材66が前部センサ67に到達すると、投光を遮られた前部センサ67からの信号でワイヤブラシ31を停止させる。その後ローラ72a,72bはワイヤブラシ31を前進・後退運動させながら、または単に後退運動させるだけで遮光部材66が後部センサ68と向かい合う位置に到達するところまで戻す。通常は、このような洗滌をアルカリ水、酸性水、水道水のそれぞれについて行うことで、内視鏡の鉗子用管路(チャネル)に対する洗滌が終了する。但し、第1洗滌装置51で設定した運転条件の如何によって、各洗滌水ごとの洗滌時間、洗滌の繰り返し回数を変えることができる。
【0017】
このようにして内視鏡2を洗滌している間に、ワイヤブラシ31もまた洗滌される。ワイヤブラシ31は、従来技術のようにリールに巻き付けられるのではなく、パイプ部56内で直状に延びているから、ワイヤ部33の周囲およびブラシ部36の周囲が余すところなく洗滌される。ワイヤブラシ31は、その遮光部材66が後部センサ68と向かい合う位置にあるときにブラシ部36が鉗子挿入口22の手前に位置し、遮光部材66が前部センサ67と向かい合う位置にあるときに鉗子用管路の先端に到達するような長さのものであることが好ましく、パイプ部56もそれに対応した長さであることが好ましい。給水管63は、パイプ部56のどのような位置につながるものであってもよいが、ワイヤブラシ31の全長を洗滌するためにパイプ部56の後方部分56bにつながっていることが好ましい。
【0018】
ワイヤブラシ31をパイプ部56に対して挿抜するときには、洗滌槽3の内側において密栓61を外し、パイプ部56の後方部分56bを開放すればよい。その後方部分56bは、洗滌槽3の内側に位置しているから、後方部分56bが開放状態であったり、後方部分56bに対する密栓61の取り付けが不完全であったりしても、パイプ部56に供給される洗滌水は、洗滌槽3が置かれた室内に漏れるということがない。かかる第1洗滌装置51は、パイプ部56の後方部分56bを洗滌槽3から外した状態で密栓61を取り付け、さらに駆動手段57と連結管26も洗滌槽3から外し、装置51の全体を洗滌槽3から切り離した状態で使用することも可能である。
【0019】
ローラ72a,72bの回転によってワイヤブラシ31を後退させると、遮光部材66がパイプ部56と給水間63との交差部80を通過してパイプ部56の後方部分56bの外へ出る。
【0020】
図3(b)の第2洗滌装置52は、後部センサの配置を除くと、図3(a)の第1洗滌装置51と同じであるので、第1洗滌装置51の参照番号に対応する部位にはその参照番号に200を加えて表示されている。第2洗滌装置52は、パイプ部256の後方部分256b寄りにパイプ部256の長さ方向へ並ぶ第1後部センサ268aと、第2後部センサ268bと、第3後部センサ268cとを有し、これら第1〜3後部センサ268a〜268cの構造は前部センサ267のそれと同じように作られている。この第2洗滌装置52は、内視鏡2の吸引管路とユニバーサルコード部管路(いずれも図示せず)とを洗滌するのに適したもので、連結管226のアタッチメント259は、内視鏡2の吸引ボタン挿入口23に固定する。洗滌槽3の操作パネルを使って第2洗滌装置52を始動すると、ワイヤブラシ231は、遮光部材266が第2後部センサ268bと向かい合う位置から前進し、第3後部センサ268cと向かい合う位置に到達する。この間にブラシ部236は内視鏡2の吸引管路を前進・後退しながら洗滌する。次にワイヤブラシ231は、遮光部材266が第3後部センサ268cと向かい合う位置から第1後部センサ268aと向かい合う位置まで後退し、その間にブラシ部236が吸引管路から抜けて出る。さらに、ワイヤブラシ231は、遮光部材266が前部センサ267と向かい合う位置に到達するまで僅かずつの前進・後退を繰り返しながら進み、その間にブラシ部236がユニバーサルコード部管路を洗滌する。この管路の全長の洗滌が終了すると、ワイヤブラシ231は、遮光部材266が第2後部センサ268bと向かい合う位置にまで戻る。ワイヤブラシ231がこのように動く間に、パイプ部256には、アルカリ水、酸性水、水道水いずれかの洗滌水が給水管263から供給される。
【0021】
なお、ワイヤブラシ231を動かすときの第1〜3後部センサ268a〜268cの選択順序は、適宜変更することができる。たとえば、遮光部材266は、図示例に代えて第1または第3後部センサ268a,268cと向かい合う位置からスタートさせることもできる。さらにはまた、内視鏡2の洗滌を終えたワイヤブラシ231は、遮光部材266が第1後部センサ268aと向かい合う位置にまで戻すことができる。ワイヤブラシ231がこの位置まで戻っているときにブラシ部236が連結管226に位置していれば、そのブラシ部236に対してアルカリ水,酸性水、水道水を給水管263から順に供給することによって、ブラシ部236を十分に洗滌することができる。ブラシ部236の洗滌を終えたワイヤブラシ231は、遮光部材266を第2後部センサ268bにまで進めて次の内視鏡2の洗滌にそなえる。
【0022】
図6は遮光部材26の斜視図であって、(a)〜(e)は部材26の各種態様を例示している。(a)の遮光部材66は、図において水平に左右方向ヘ延びるワイヤ部33と同じ方向ヘ長く延びる円柱状のもので、ワイヤ部33につながる前端部81と、その反対端部である後端部82とを有し、これら両端部81,82に現われているように、ワイヤ部33と直交する方向の断面形状は実質的に円形である。このような断面形状の遮光部材66は、それがパイプ部56の中で周方向ヘ回転しても、投光器91からの光を遮る面積に変化がなく、一定している。断面形状が多角形の遮光部材であっても、その作用が遮光部材66と同等であるならば、この発明においてその遮光部材の断面形状は実質的に円形のものとみなされる。(a)の遮光部材66は、それが前進または後退して、パイプ部56と給水管63との交差部80を通過するときに、その交差部80に引掛り易いという難点がある。(b)の遮光部材26は、その難点を解消し得るものの例であって、前端部81の径がワイヤ部33の延びる方向(図の左右方向)へ向かって次第に小さくなり、その前端部81は先がとがって円錐形を呈している。かような遮光部材66は、ワイヤ部33が前進するときに、交差部80に引掛りにくい。(c)の遮光部材26は、後端部82の径がワイヤ部33の延びる方向ヘ向かって次第に小さくなり、その後端部82は円錐形を呈している。かような遮光部材66は、ワイヤ部33が後退するときに、交差部80に引掛りにくい。(d)の遮光部材66は、前端部81と後端部82とが円錐形を呈している。かような遮光部材26は、ワイヤ部33が前進するときにも、後退するときにも交差部80に引掛りにくい。(e)の遮光部材66は、六角形を呈する板状のもので、前端部81と後端部82とがワイヤ部33の延びる方向ヘ向かってとがるように形成されているから、この遮光部材66は、(d)のそれと同様に交差部80に引掛りにくい。ただし、この遮光部材66は、それがパイプ部56の中で回転すると、実質的な意味において投光器91と向かい合う面積が変化するから、それによって光を遮る面積が変化するという場合がある。
【0023】
図6の(a)〜(e)の例示によって明らかなように、この発明では、遮光部材66の断面形状を実質的に円形にすることによって、遮光部材66がパイプ部56の中で回転してもその回転によって投光器91からの光を遮る面積に変化が生じるということがない。それゆえ、この遮光部材66は、ワイヤブラシ31の停止位置を精度よく再現することに優れ、ワイヤブラシ31が前進・交代するときの寸法を正確に制御できる。また、遮光部材66の前端部81および/または後端部82がワイヤ部33の延びる方向ヘ向かってとがっていることによって、ワイヤブラシ31のパイプ部56に対する挿抜が容易かつ速やかになり、パイプ部56における前進・後退がスムーズになる。
【0024】
この発明において、遮光部材266は、図示例の遮光部材66と同様の形状に作ることができる。これら遮光部材66,266はプラスチックその他適宜の材料によって作ることができる。また、この発明において、パイプ部56に対して後方部分56bでつながる給水管63は、中間部分56cでつながるものに代えることができる。パイプ部56において、給水管63の位置と前部センサ67や後部センサ68の位置との間に格別の規定はなく、それぞれの位置を自由に決めることができる。
【0025】
この発明において、図示例で同じ長さを有する第1洗滌装置51のパイプ部56と第2洗滌装置52のパイプ部256とは、長さの異なるものに代えることができる。また、洗滌槽3は、第1洗滌装置51または第2洗滌装置52の一方のみを取り付けて使用することもできる。
【0026】
【発明の効果】
この発明に係る内視鏡洗滌装置では、パイプ状の部分に挿入されたワイヤの後端に設けられている作用部をセンサで検出することによって内視鏡に対してワイヤブラシが前進・後退する寸法を制御する。その制御に当たっては、作用部の端部をとがらせることによって作用部はパイプ状部分において引掛かることがなくなり、作用部の断面形状を実質的に円形にすることによって作用部の回転による影響を解消することができる。それゆえ、この発明に係る内視鏡洗滌装置は、ワイヤブラシが前進・後退するときの寸法を正確に制御することができるので取扱い易いものになる。
【図面の簡単な説明】
【図1】内視鏡洗滌装置が使用される洗滌槽の部分頂面図。
【図2】図1の洗滌槽の斜視図。
【図3】(a)と(b)とによって異なる実施態様を示す内視鏡洗滌装置の断面図。
【図4】駆動手段の頂面図。
【図5】図4のV−V線断面図。
【図6】(a)〜(e)によって各種態様の遮光部材を示す図面。
【符号の説明】
2 内視鏡
3 洗滌槽
26 連結管
31 ワイヤブラシ
33 ワイヤ
36 ブラシ
51 内視鏡洗滌装置
52 内視鏡洗滌装置
56 パイプ
56a 前方部分
56b 後方部分
56c 中間部分
57 駆動手段
63 給水手段(給水管)
66 作用部(遮光部材)
67 検出手段
68 検出手段
231 ワイヤブラシ
233 ワイヤ
236 ブラシ
256 パイプ
256b 後方部分
263 給水手段(給水管)
266 作用部(遮光部材)
267 検出手段
268a,268b,268c 検出手段
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscope cleaning apparatus using a wire brush.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 7-194533 and Japanese Patent Application Laid-Open No. 8-275117 disclose an apparatus for automatically inserting a wire brush into an endoscope pipe line accommodated in an endoscope washing tank and washing the inside of the pipe line. Yes. Since the wire is long, it is wound around a reel, and a necessary amount is paid out according to the length of the pipe.
[0003]
[Problems to be solved by the invention]
In the known cleaning apparatus, the wire feed amount may be controlled by the rotation of the reel. However, in this case, even if the wires overlap and are wound around the reel, or even if they are wound around without being overlapped, if the wound state is not constant, the reel rotation speed and the wire feed The amount is not constant, and the feeding amount cannot be accurately controlled. In addition, since one end of the wire is fixed to the reel, the wire cannot be exchanged unless the fixing is released, and for that purpose, the reel must be taken out from the part in which it is stored. There are many cases.
[0004]
The present invention relates to an improvement of an endoscope cleaning apparatus using a wire brush, which facilitates accurate control of dimensions when a wire brush inserted into an endoscope channel advances and retracts, and a wire. It is a problem to improve the ease of handling of the endoscope cleaning device by facilitating the replacement of the brush.
[0005]
[Means for Solving the Problems]
The present invention for solving the above problems comprises the first invention and the second invention, and both inventions are directed to a wire having a brush attached to the front end of a wire having a front end and a rear end. Moving the wire brush forward and backward in a direction from the wire brush housing part to the endoscope in a state where the brush, the part for housing the wire brush, and the brush are inserted into the duct of the endoscope An endoscope cleaning apparatus having a driving means that can be used.
[0006]
In such an endoscope cleaning apparatus, the first invention is characterized as follows. The wire brush housing portion has a front end portion, a rear end portion, and a pipe-like intermediate portion extending between the both end portions, and the front end portion is in an open state so that it can be connected to a conduit of the endoscope. Formed and capable of supplying cleaning water for the endoscope to the inside of the wire brush housing part and the position detecting means of the wire and the wire brush housing part at one of the intermediate part and the rear end part and intersecting the wire brush housing part A water supply pipe connected in the direction in which the wire is connected, and an action portion for the detection means is provided at the rear end of the wire, and the action portion has a substantially circular cross-sectional shape in a direction perpendicular to the wire. is there.
[0007]
In such an endoscope cleaning apparatus, the features of the second invention are as follows. The wire brush housing portion has a front end portion, a rear end portion, and a pipe-like intermediate portion extending between the both end portions, and the front end portion is in an open state so that it can be connected to a conduit of the endoscope. Formed and capable of supplying cleaning water for the endoscope to the inside of the wire brush housing part and the position detecting means of the wire and the wire brush housing part at one of the intermediate part and the rear end part and intersecting the wire brush housing part A water supply pipe connected in the direction in which the wire is provided, and an action portion for the detection means is provided at the rear end of the wire, and the action portion has both end portions in the direction in which the wire extends, and both end portions thereof. At least one of them is pointed in the direction in which the wire extends.
[0008]
These first and second inventions have the following preferred embodiments.
(1) The endoscope cleaning apparatus can operate or stop the driving unit based on a signal from the position detection unit generated by the action unit acting on the position detection unit.
(2) In the endoscope cleaning apparatus, the intermediate portion is light-transmitting, the position detecting means is a projector and a light receiver facing each other with the intermediate portion interposed therebetween, and the action portion is provided from the projector. It blocks light.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The details of the endoscope cleaning apparatus according to the present invention will be described below with reference to the accompanying drawings.
[0010]
FIG. 1 is a partially broken top view of a washing tub 3 in which an endoscope washing apparatus is used. The washing tub 3 is in a state in which a lid 4 is opened. Is attached. In the washing tub 3, the used endoscope 2 is stored for washing, and washing water can be supplied from the water supply ports 13 and 14. Alkaline water, acidic water, and tap water are used for the washing water. These washing water supply conditions can be set by an operation panel (not shown) attached to the washing tub 3. The washing water in the washing tank 3 goes out from the drain port 15. The endoscope 2 is a conventional one, and includes a connector portion 17, a universal cord portion 18, an operation portion 19, an insertion portion 21, and the like. The operation unit 19 is provided with a forceps insertion port 22, a suction button insertion port 23, and the like.
[0011]
Two flexible connecting pipes 26 and 226 extend from the side wall 3 a of the washing tub 3, and two wire brushes 31 and 231 extend from the connecting pipes 26 and 226. The wire brushes 31, 231 have wire portions 33, 233 and brush portions 36, 236 at the tips of the wire portions 33, 233, and can advance and retract from the tips of the connecting pipes 26, 226, respectively. The connecting tubes 26 and 226 can be attached to and detached from the forceps insertion port 22 and the suction button insertion port 23 of the endoscope 2. The wire brushes 31, 231 can brush and wash the inside of the pipe line by the wire parts 33, 233 repeatedly moving forward and backward toward the inner part of the pipe line of the endoscope 2 together with the brush parts 36, 236. it can.
[0012]
The preferred alkaline water supplied as washing water has a pH of 11.0 or higher and an oxidation-reduction potential (ORP) of -800 mV or higher in order to dissolve blood and other protein stains adhering to the endoscope after use. used. Preferred acidic water has a pH of 2.2 to 2.7, an oxidation-reduction potential of +1100 mV or more, an effective chlorine concentration of 20 to 60 mg / kg, and is used as a disinfectant that kills bacteria attached to the endoscope 2. . The tap water is used when the endoscope 2 is rinsed in advance or after sterilization.
[0013]
FIG. 2 is a perspective view of a main part of the washing tub 3. A first cleaning device 51 and a second cleaning device 52, which are endoscope cleaning devices according to the present invention, are attached to the outside of the cleaning tank 3. The first cleaning device 51 and the second cleaning device 52 have substantially the same structure, and the first cleaning device 51 will be first described below. The first washing device 51 has a pipe portion 56 extending so as to surround the washing tub 3 from the outside. A drive portion 57 is attached to a front portion 56 a of the pipe portion 56, and the drive portion 57 is a side wall of the washing tub 3. It is fixed to the outside of 3a. A connecting pipe 26 that forms the front end of the first cleaning device 51 extends from the drive unit 57 to the inside of the cleaning tank 3. An attachment 59 for the forceps insertion port 22 (see FIG. 1) of the endoscope 2 is attached to the distal end of the connecting tube 26. The rear portion 56b of the pipe portion 56 forms a rear end portion of the first washing device 51, and a seal plug 61 (see FIG. 3 (a)) that can be opened and closed is attached to a distal end that extends to the inside of the washing tub 3. ing. The rear portion 56b is fixed to the side wall 3b of the washing tub 3 in a watertight state. A water supply pipe 63 and an electromagnetic valve 64 are connected in the vicinity of the rear portion 56b. Inside the washing tub 3, the tip of the wire brush 31 is seen from the attachment 59.
[0014]
FIGS. 3A and 3B are cross-sectional views of the first cleaning device 51 and the second cleaning device 52. In the first cleaning device 51, the wire portion 33 of the wire brush 31 extends in the length direction of the pipe portion 56 inside the intermediate portion 56 c between the front portion 56 a and the rear portion 56 b of the pipe portion 56. The almost entire length is accommodated in the wire brush housing part from the connecting pipe 26 to the sealing plug 61 in the device 51. The wire portion 33 has a brush portion 36 at its front end and a light shielding member 66 at its rear end. The pipe portion 56 has a front sensor 67 at the front portion 56 a and slightly behind the drive portion 57, and has a rear sensor 68 at the rear portion 56 b and slightly in front of the sealing plug 61. These sensors 67 and 68 have the same structure, and include a light projector 91 and a light receiver 92 that face each other on the radially outer side of the light-transmitting pipe portion 56. The illustrated wire brush 31 is in a retracted state, and the light shielding member 66 is located at a position facing the rear sensor 68 so as to shield the light from the projector 91 and sense that the wire brush 31 is in the retracted position. The sensed rear sensor 68 transmits the signal to the driving unit 57 through an appropriate control circuit. When the wire brush 31 moves forward and the light blocking member 66 comes to a position facing the front sensor 67, the light from the projector 91 is blocked to sense that the wire brush 31 is in the forward position, and at that time, the front sensor 67 is detected. Transmits the signal to the drive unit 57. The drive unit 57 includes a housing 71 and a roller 72 that is housed in the housing 71, and the housing 71 is in a watertight state except for a connection portion between the pipe portion 56 and the connecting pipe 26. In the water supply pipe 63 connected from the direction intersecting the pipe portion 56 in the vicinity of the rear portion 56b of the pipe portion 56, any one of alkaline water, acidic water, and tap water enters the pipe portion 56 by opening and closing the electromagnetic valve 64. Wash water can be supplied.
[0015]
4 and 5 are a top view of the drive unit 57 and a partial cross-sectional view taken along line VV in FIG. However, in FIG. 4, the lid 73 (see FIG. 3A) of the housing 71 in the drive unit 57 is removed, and the inside of the housing 71 is visible. The roller 72 of the drive unit 57 is composed of a pair of rollers 72a and 72b arranged in parallel. The rollers 72a and 72b rotate while holding the wire part 33 of the wire brush 31 with an appropriate pressure to advance and retract the wire brush 31. In addition, when the wire brush 31 is inserted into and removed from the pipe portion 56, the brush portion 36 can be passed. The roller 72 is rotated by a drive gear 74 and a motor 76 connected thereto, and the motor 76 is rotated clockwise or counterclockwise by a signal from the front sensor 67 and the rear sensor 68 and stopped. Is possible.
[0016]
In the 1st washing apparatus 51 formed in this way, the attachment 59 of the connection pipe 26 is fixed to the forceps insertion port 22 of the endoscope 2 in FIG. When the wire brush 31 is fixed, the wire brush 31 protruding from the connecting tube 26 is inserted into the forceps insertion opening 22 in advance. Subsequently, the attachment 259 of the connecting tube 226 of the second cleaning device 52 is fixed to the suction button insertion port 23 of the endoscope 2. When the operation is started using the operation panel of the washing tub 3, the electromagnetic valve 64 of the water supply pipe 63 is opened, and either alkaline water, acidic water or tap water is supplied into the pipe portion 56 according to the setting conditions of the panel. . The wire brush 31 at the start of operation is in a retracted position where the light shielding member 66 faces the rear sensor 68. In the driving means 57 that has started operation, the rollers 72a and 72b are advanced while moving the wire brush 31 forward and backward, and gradually advance in the forceps channel (not shown) of the endoscope 2. When the light blocking member 66 of the wire brush 31 reaches the front sensor 67, the wire brush 31 is stopped by a signal from the front sensor 67 where the projection is blocked. Thereafter, the rollers 72 a and 72 b return the wire brush 31 to a position where the light shielding member 66 reaches the position facing the rear sensor 68 while moving the wire brush 31 forward and backward, or simply by moving backward. Normally, such washing is performed for each of alkaline water, acidic water, and tap water, thereby completing washing of the forceps conduit (channel) of the endoscope. However, depending on the operating conditions set in the first washing device 51, the washing time and the number of times of washing can be changed for each washing water.
[0017]
While the endoscope 2 is being cleaned in this manner, the wire brush 31 is also cleaned. The wire brush 31 is not wound around a reel as in the prior art, but extends straight in the pipe portion 56, so that the periphery of the wire portion 33 and the periphery of the brush portion 36 are thoroughly washed. When the light shielding member 66 is in a position facing the rear sensor 68, the wire brush 31 is positioned in front of the forceps insertion opening 22, and the forceps when the light shielding member 66 is in a position facing the front sensor 67. It is preferable that the length of the pipe reaches the front end of the pipe, and the pipe portion 56 is also preferably a length corresponding thereto. The water supply pipe 63 may be connected to any position of the pipe portion 56, but is preferably connected to the rear portion 56 b of the pipe portion 56 in order to wash the entire length of the wire brush 31.
[0018]
When inserting / removing the wire brush 31 into / from the pipe portion 56, the sealing plug 61 may be removed inside the washing tub 3 and the rear portion 56b of the pipe portion 56 may be opened. Since the rear portion 56b is located inside the washing tub 3, even if the rear portion 56b is in an open state or the sealing plug 61 is not completely attached to the rear portion 56b, The supplied washing water does not leak into the room in which the washing tank 3 is placed. The first cleaning device 51 is attached with the sealing plug 61 in a state where the rear portion 56b of the pipe portion 56 is removed from the cleaning tub 3, and the drive means 57 and the connecting pipe 26 are also removed from the cleaning tub 3, and the entire device 51 is cleaned. It is also possible to use it in a state separated from the tank 3.
[0019]
When the wire brush 31 is moved backward by the rotation of the rollers 72 a and 72 b, the light blocking member 66 passes through the intersection 80 between the pipe portion 56 and the water supply 63 and goes out of the rear portion 56 b of the pipe portion 56.
[0020]
The second washing device 52 in FIG. 3B is the same as the first washing device 51 in FIG. 3A except for the arrangement of the rear sensor. Therefore, the part corresponding to the reference number of the first washing device 51 Is displayed by adding 200 to the reference number. The second washing device 52 includes a first rear sensor 268a, a second rear sensor 268b, and a third rear sensor 268c that are arranged in the length direction of the pipe portion 256 near the rear portion 256b of the pipe portion 256. The structure of the first to third rear sensors 268a to 268c is made the same as that of the front sensor 267. The second cleaning device 52 is suitable for cleaning the suction conduit and the universal cord section conduit (both not shown) of the endoscope 2, and the attachment 259 of the connecting tube 226 is an endoscope. Fix to the suction button insertion port 23 of the mirror 2. When the second cleaning device 52 is started using the operation panel of the cleaning tank 3, the wire brush 231 advances from a position where the light shielding member 266 faces the second rear sensor 268b and reaches a position facing the third rear sensor 268c. . During this time, the brush portion 236 cleans the suction pipe of the endoscope 2 while moving forward and backward. Next, the wire brush 231 retreats from the position where the light shielding member 266 faces the third rear sensor 268c to the position facing the first rear sensor 268a, during which the brush part 236 comes out of the suction conduit. Further, the wire brush 231 advances while being gradually advanced and retracted little by little until the light shielding member 266 reaches a position facing the front sensor 267, during which the brush portion 236 cleans the universal cord portion conduit. When the cleaning of the entire length of the conduit is completed, the wire brush 231 returns to a position where the light shielding member 266 faces the second rear sensor 268b. While the wire brush 231 moves in this way, cleaning water of any one of alkaline water, acidic water and tap water is supplied to the pipe portion 256 from the water supply pipe 263.
[0021]
In addition, the selection order of the 1st-3rd rear sensors 268a-268c when moving the wire brush 231 can be changed suitably. For example, the light shielding member 266 can be started from a position facing the first or third rear sensor 268a, 268c instead of the illustrated example. Furthermore, the wire brush 231 that has finished cleaning the endoscope 2 can be returned to a position where the light shielding member 266 faces the first rear sensor 268a. If the brush portion 236 is positioned in the connecting pipe 226 when the wire brush 231 is returned to this position, alkaline water, acidic water, and tap water are sequentially supplied from the water supply pipe 263 to the brush portion 236. Thus, the brush part 236 can be sufficiently washed. After the brush portion 236 has been cleaned, the wire brush 231 advances the light shielding member 266 to the second rear sensor 268b to prepare for the next cleaning of the endoscope 2.
[0022]
FIG. 6 is a perspective view of the light shielding member 26, and (a) to (e) illustrate various aspects of the member 26. The light shielding member 66 in (a) is a cylindrical member extending in the same direction as the wire portion 33 extending horizontally in the left-right direction in the drawing, and includes a front end portion 81 connected to the wire portion 33 and a rear end opposite thereto. As shown in these end portions 81 and 82, the cross-sectional shape in the direction orthogonal to the wire portion 33 is substantially circular. Even if the light shielding member 66 having such a cross-sectional shape rotates in the circumferential direction in the pipe portion 56, the area that blocks the light from the light projector 91 does not change and is constant. Even if the cross-sectional shape is a polygonal light-shielding member, if the action is equivalent to that of the light-shielding member 66, the cross-sectional shape of the light-shielding member is regarded as a substantially circular shape in the present invention. The light shielding member 66 of (a) has a drawback that when it moves forward or backward and passes through the intersecting portion 80 between the pipe portion 56 and the water supply pipe 63, it is easily caught by the intersecting portion 80. The light shielding member 26 of (b) is an example that can eliminate the difficulty, and the diameter of the front end portion 81 gradually decreases in the direction in which the wire portion 33 extends (left and right direction in the figure), and the front end portion 81 thereof. Has a pointed conical shape. Such a light shielding member 66 is unlikely to be caught by the intersecting portion 80 when the wire portion 33 moves forward. In the light shielding member 26 of (c), the diameter of the rear end portion 82 gradually decreases in the direction in which the wire portion 33 extends, and the rear end portion 82 has a conical shape. Such a light shielding member 66 is less likely to be caught by the intersecting portion 80 when the wire portion 33 moves backward. In the light shielding member 66 in (d), the front end portion 81 and the rear end portion 82 have a conical shape. Such a light shielding member 26 is less likely to be caught by the intersecting portion 80 when the wire portion 33 moves forward and backward. The light shielding member 66 of (e) is a plate-shaped member having a hexagonal shape, and the front end portion 81 and the rear end portion 82 are formed so as to extend toward the direction in which the wire portion 33 extends. The light shielding member 66 is unlikely to be caught at the intersection 80 as in the case of (d). However, when the light shielding member 66 rotates in the pipe portion 56, the area facing the light projector 91 changes in a substantial sense, so that the light blocking area may change accordingly.
[0023]
6A to 6E, in the present invention, the light shielding member 66 rotates in the pipe portion 56 by making the cross-sectional shape of the light shielding member 66 substantially circular. However, the rotation does not change the area that blocks the light from the projector 91. Therefore, the light shielding member 66 is excellent in accurately reproducing the stop position of the wire brush 31 and can accurately control the dimensions when the wire brush 31 moves forward / changes. In addition, since the front end portion 81 and / or the rear end portion 82 of the light shielding member 66 are pointed toward the direction in which the wire portion 33 extends, the wire brush 31 can be easily and quickly inserted into and removed from the pipe portion 56. The forward / backward movement at 56 becomes smooth.
[0024]
In the present invention, the light shielding member 266 can be formed in the same shape as the light shielding member 66 in the illustrated example. These light shielding members 66 and 266 can be made of plastic or other appropriate material. In the present invention, the water supply pipe 63 connected to the pipe portion 56 at the rear portion 56b can be replaced with one connected at the intermediate portion 56c. In the pipe portion 56, there is no special provision between the position of the water supply pipe 63 and the positions of the front sensor 67 and the rear sensor 68, and each position can be freely determined.
[0025]
In this invention, the pipe part 56 of the 1st washing apparatus 51 and the pipe part 256 of the 2nd washing apparatus 52 which have the same length by the example of illustration can be replaced with what differs in length. Moreover, the washing tank 3 can also be used by attaching only one of the first washing device 51 or the second washing device 52.
[0026]
【The invention's effect】
In the endoscope cleaning apparatus according to the present invention, the wire brush moves forward and backward with respect to the endoscope by detecting the action portion provided at the rear end of the wire inserted into the pipe-shaped portion with the sensor. Control the dimensions. In the control, the action part is not caught in the pipe-like part by bending the end part of the action part, and the influence of the action part rotation is eliminated by making the action part substantially circular in cross section. can do. Therefore, the endoscope cleaning apparatus according to the present invention is easy to handle because the dimensions when the wire brush moves forward and backward can be accurately controlled.
[Brief description of the drawings]
FIG. 1 is a partial top view of a washing tank in which an endoscope washing apparatus is used.
FIG. 2 is a perspective view of the washing tub shown in FIG.
FIG. 3 is a cross-sectional view of an endoscope cleaning apparatus showing different embodiments according to (a) and (b).
FIG. 4 is a top view of driving means.
5 is a cross-sectional view taken along line VV in FIG.
6A to 6E are diagrams showing light shielding members of various modes.
[Explanation of symbols]
2 Endoscope 3 Washing tank 26 Connecting pipe 31 Wire brush 33 Wire 36 Brush 51 Endoscope washing device 52 Endoscope washing device 56 Pipe 56a Front portion 56b Rear portion 56c Intermediate portion 57 Drive means 63 Water supply means (water supply pipe)
66 Action part (light shielding member)
67 Detection means 68 Detection means 231 Wire brush 233 Wire 236 Brush 256 Pipe 256b Rear portion 263 Water supply means (water supply pipe)
266 Action part (light shielding member)
267 detection means 268a, 268b, 268c detection means

Claims (4)

前端と後端とを有するワイヤの前記前端にブラシが取り付けられているワイヤブラシと、前記ワイヤブラシを収納する部位と、前記ブラシを内視鏡の管路に挿入した状態で前記ワイヤブラシ収納部位から前記内視鏡へ向かう方向に前記ワイヤブラシを前進・後退させることができる駆動手段とを有する内視鏡洗滌装置において、
前記ワイヤブラシ収納部位は、前端部と後端部とこれら両端部間に延びるパイプ状の中間部とを有し、前記前端部が開放状態にあって前記内視鏡の管路に接続可能に形成され、前記中間部と後端部とのいずれかには前記ワイヤの位置検出手段と前記ワイヤブラシ収納部位内側へ前記内視鏡に対する洗滌水を供給可能であって前記ワイヤブラシ収納部位と交差する方向においてつながる給水管とが設けられており、前記ワイヤの前記後端には前記検出手段に対する作用部が設けられ、前記作用部は前記ワイヤと直交する方向の断面形状が実質的に円形であることを特徴とする前記内視鏡洗滌装置。
A wire brush in which a brush is attached to the front end of a wire having a front end and a rear end, a portion for storing the wire brush, and the wire brush storage portion in a state in which the brush is inserted into a conduit of an endoscope In an endoscope cleaning apparatus having driving means capable of moving the wire brush forward and backward in a direction from the endoscope toward the endoscope,
The wire brush housing portion has a front end portion, a rear end portion, and a pipe-like intermediate portion extending between the both end portions, and the front end portion is in an open state so that it can be connected to a conduit of the endoscope. Formed and capable of supplying cleaning water for the endoscope to the inside of the wire brush housing part and the position detecting means of the wire and the wire brush housing part at one of the intermediate part and the rear end part and intersecting the wire brush housing part A water supply pipe connected in the direction in which the wire is connected, and an action portion for the detection means is provided at the rear end of the wire, and the action portion has a substantially circular cross-sectional shape in a direction perpendicular to the wire. The endoscope cleaning apparatus according to claim 1, wherein the endoscope cleaning apparatus is provided.
前端と後端とを有するワイヤの前記前端にブラシが取り付けられているワイヤブラシと、前記ワイヤブラシを収納する部位と、前記ブラシを内視鏡の管路に挿入した状態で前記ワイヤブラシ収納部位から前記内視鏡へ向かう方向に前記ワイヤブラシを前進・後退させることができる駆動手段とを有する内視鏡洗滌装置において、
前記ワイヤブラシ収納部位は、前端部と後端部とこれら両端部間に延びるパイプ状の中間部とを有し、前記前端部が開放状態にあって前記内視鏡の管路に接続可能に形成され、前記中間部と後端部とのいずれかには前記ワイヤの位置検出手段と前記ワイヤブラシ収納部位内側へ前記内視鏡に対する洗滌水を供給可能であって前記ワイヤブラシ収納部位と交差する方向においてつながる給水管とが設けられており、前記ワイヤの前記後端には前記検出手段に対する作用部が設けられ、前記作用部は前記ワイヤが延びる方向に両端部を有し、その両端部の少なくとも一方が前記ワイヤが延びる方向へ向かってとがっていることを特徴とする前記内視鏡洗滌装置。
A wire brush in which a brush is attached to the front end of a wire having a front end and a rear end, a portion for storing the wire brush, and the wire brush storage portion in a state in which the brush is inserted into a conduit of an endoscope In an endoscope cleaning apparatus having driving means capable of moving the wire brush forward and backward in a direction from the endoscope toward the endoscope,
The wire brush housing portion has a front end portion, a rear end portion, and a pipe-like intermediate portion extending between the both end portions, and the front end portion is in an open state so that it can be connected to a conduit of the endoscope. Formed and capable of supplying cleaning water for the endoscope to the inside of the wire brush housing part and the position detecting means of the wire and the wire brush housing part at one of the intermediate part and the rear end part and intersecting the wire brush housing part A water supply pipe connected in the direction in which the wire is provided, and an action portion for the detection means is provided at the rear end of the wire, and the action portion has both end portions in the direction in which the wire extends, and both end portions thereof. The endoscope cleaning apparatus according to claim 1, wherein at least one of the ends is bent in a direction in which the wire extends.
前記位置検出手段に前記作用部が作用して生じる前記位置検出手段からの信号に基づいて前記駆動手段を運転または停止させることができる請求項1または2記載の内視鏡洗滌装置。The endoscope cleaning apparatus according to claim 1 or 2, wherein the driving means can be operated or stopped based on a signal from the position detection means generated by the action portion acting on the position detection means. 前記中間部が光透過性であり、前記位置検出手段が前記中間部を挟んで対向する投光器と受光器とであり、前記作用部が前記投光器からの光を遮るものである請求項1〜3のいずれかに記載の内視鏡洗滌装置。The intermediate portion is light transmissive, the position detecting means is a light projector and a light receiver facing each other with the intermediate portion interposed therebetween, and the action portion blocks light from the light projector. The endoscope cleaning apparatus according to any one of the above.
JP2002024652A 2002-01-31 2002-01-31 Endoscope washing device Expired - Fee Related JP3629005B2 (en)

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