JP4075972B2

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Info

Publication number: JP4075972B2
Application number: JP30663298A
Authority: JP
Inventors: 一博阿部; 英介牧野
Original assignee: 日本シャーウッド株式会社
Priority date: 1998-10-28
Filing date: 1998-10-28
Publication date: 2008-04-16
Anticipated expiration: 2018-10-28
Also published as: JP2000126306A

Description

【０００１】
【発明の属する技術分野】
本発明は、輸液ライン等に薬液を一時的または長期的に注入したり、動・静脈ラインから採血等を行う場合などに用いられる液体混注具およびカテーテル等の混注部と、それに接続され内腔内に設けた針部により薬液等を混注部に流入するコネクターとからなる接続具に関するものである。
【０００２】
【従来の技術】
中心静脈栄養療法をはじめとする各種の栄養投与中において、他の薬液等を注入する場合、輸液ルートの途中に予め備えておいた別ルートの輸液ラインが接続された接続具である混注部およびコネクターを介して行う方法が通常用いられている。この混注部に用いられる手段としては、輸液ラインからの細菌の侵入を防止して感染の機会を減らすことが可能な外部とを遮断するセプタム、つまりゴム状弾性体を有する混注部が使用されている。
【０００３】
図４は従来の代表的なＹ型の液体混注具およびそれに接続して用いられるコネクターの一部を断面で示した外観図と、その作用説明図である。図において、５１は接続具のＹ型の液体混注具の本体を構成するハウジングで、混注口５２と流出口５３を両端部に有する管状体であり、かつ一般的に中間部に分岐管５４が形成されその端部に注入口５５を有している。５６は混注口５２を封止するゴム状弾性体で、混注口５２に嵌着されたキャップ５７によって混注口５２に保持されている。５８はハウジング５１の外壁に設けられた二条の外ねじ、５９はハウジング５１の外壁の外ねじ５８より分岐管５４側に設けられ後述するコネクターのフード部の先端部を塞ぐ段部である。
【０００４】
６０はハウジング５１の基端部である混注口５２側に接続される接続具のコネクターで、内径がキャップ５７の外径とほぼ等しい有蓋円筒状に形成され、その円筒状の胴部内にハウジング５１の混注口５２側が摺動かつ回動可能に嵌合され、ハウジング５１の外ねじ５８に螺合する二条の内ねじ６２が内壁に設けられたフード部６１と、フード部６１の蓋部外側のほぼ中心部に設けられたほぼ円筒状の連結部６３と、ほぼ中心部に内腔６４ａを有し、一方の端部に基部側が内腔６４ａ内に嵌入されてゴム状弾性体５６に穿刺される針部６５を備え、他方の端部に混注時等に使用される延長チューブ６６が接続されて、針部６５がフード部６１内に位置するように連結部６３に連結された接続部６４とからなっている。
【０００５】
そして、注入口５５に延長チューブ６７が結合された分岐管５４側をメインルートとし、主薬液はこのメインルートを通ってハウジング５１の流出口５３に結合された延長チューブ６８から患者側（血管など）へ投与される。また、図４（ｂ）に示すように、ハウジング５１の混注口５２側にコネクター６０のフード部６１を嵌装し、外ねじ５８および内ねじ６２によりコネクター６０をハウジング５１に接続させつつゴム状弾性体５６に針部６５を穿刺させた混注口５２側を混注ルートとし、他の薬液は、図４（ｂ）の矢印Ｙに示すように、延長チューブ６６からこの混注ルートを通ってハウジング５１内の主薬液（図４（ｂ）の矢印Ｘ）と混合しつつ流出口５３に結合された延長チューブ６８から患者側（血管など）へ持続的に投与される。
【０００６】
他の薬液の投与を終了する場合は、ハウジング５１に設けられた外ねじ５８とコネクター６０の内ねじ６２との螺合を緩めて、針部６５がゴム状弾性体５６から抜ける方向にコネクター６０を引っ張り離脱させる。
【０００７】
【発明が解決しようとする課題】
上記のような従来の接続具である液体混注具およびコネクター６０は、他の薬液の投与を中断する場合、特別な機能を備えていないため、他の薬液の投与を終了する場合と同様に、ハウジング５１に設けられた外ねじ５８とコネクター６０の内ねじ６２との螺合を緩めて、針部６５がゴム状弾性体５６から抜ける方向にコネクター６０を引っ張り離脱させるか、または、クランプまたはローラクランプ等を用いて延長チューブ６６を閉塞し、針部６５からハウジング５１への混注ルートを遮断させていた。
【０００８】
しかしながら、いずれの場合もその作業は煩わしいものであり、前者のようにコネクター６０を一旦離脱させてしまうと、そのコネクター６０は細菌による感染などの問題で再度使用することができず、新しいコネクター６０と交換しなければならなかった。このため、中断作業はより手間のかかるものとなってしまっていた。また、後者のようにクランプ等で延長チューブ６６を閉塞し混注ルートを遮断した場合は、液体混注具側で中断操作を行っていないため、混注ルートが遮断されたかどうかの判断がしにくく、場合によっては完全に遮断されずに薬液の投与が継続されてしまうこともあった。このため、医師または看護婦などの医療従事者が、薬液投与が中断されているかの確認に長い時間費やさなければならず、その作業が面倒であった。さらに、後者の場合は、延長チューブ６６のクランプされた部分から針部６５の針先までの間に薬液が残ってしまい、滞留部分を作ってしまうという問題もあった。
【０００９】
本発明は、上記のような課題を解決するためになされたもので、薬液投与の中断作業を簡単かつ確実に行えるとともに、使用中のものを交換することなく継続して用いても細菌による感染を防止することのできる使い勝手のよい接続具を提供することを目的としたものである。
【００１０】
【課題を解決するための手段】
本発明に係る接続具は、基端部に外部を遮断するゴム状弾性体が取り付けられた薬液流入口を有する混注部と、内腔内にゴム状弾性体に穿刺される針部を有し、内腔内に混注部の基端部が着脱可能かつ摺動および回動可能に接続されるコネクターとを備えてなり、混注部の基端部の外壁に突起部を設けるとともに、コネクターの外周部に、突起部が係止される少なくとも２個の係止孔を有し、先端部が開口された係合部を設け、突起部の係止孔への係止位置により、針部の先端部のゴム状弾性体への挿入深さを少なくとも２段階に設定できるようにし、コネクターを混注部に深く接続させたときに、コネクターの針部の先端部が混注部のゴム状弾性体を貫通して混注部の内腔内に位置し、コネクターを混注部に浅く接続させたときに、コネクターの針部の先端部が混注部のゴム状弾性体内に位置して針部の先端部をゴム状弾性体により閉塞するようにしたものである。
【００１２】
本発明に係る接続具は、コネクターの係合部を、針部の挿入方向とほぼ平行で先端部が開口されたほぼＩ字状の溝部と、溝部の基端部に溝部と直交する方向に設けられた第１の係止孔と、溝部のほぼ中間部に溝部と直交しかつ第１の係止孔と同方向または反対方向に設けられた第２の係止孔とにより構成したものである。
【００１３】
本発明に係る接続具は、コネクターの係合部を、針部の挿入方向とほぼ平行で先端部が開口されたほぼＩ字状の溝部と、溝部の基端部からコネクターの先端部に向かって傾斜した第１の係止孔と、溝部のほぼ中間部に第１の係止孔と同方向または反対方向でかつコネクターの先端部に向かって傾斜した第２の係止孔とにより構成したものである。
【００１４】
本発明に係る接続具は、コネクターの係合部を、針部の挿入方向とほぼ平行で先端部が開口されたほぼＩ字状の溝部と、溝部の基端部からコネクターの先端部に向かって傾斜した第１の係止孔と、溝部の基端部の第１の係止孔と反対方向からコネクターの先端部に向かって傾斜し第１の係止孔よりコネクターの先端部側に位置する第２の係止孔とにより構成したものである。
【００１６】
本発明に係る接続具は、コネクターの外周部に設けられた係合部の近傍に、開口された窓部を設けるとともに、混注部の基端部の外壁に、コネクターの接続位置に対応して窓部から表示する文字部を設けたものである。
【００１７】
本発明に係る接続具は、コネクターを、混注部の基端部の外側に着脱可能かつ摺動および回動可能に嵌合される有蓋円筒状のフード部と、フード部の蓋部内側のほぼ中心部に設けられ、混注部の基端部がフード部内に嵌合されたときに混注部のゴム状弾性体に穿刺される鈍針と、フード部の蓋部外側のほぼ中心部に設けられ、鈍針の内腔に連通する内腔を有し、混注部品または側注部品が連結または結合される連結部と、フード部の外周部の先端部側に設けられ混注部の突起部が係止される少なくとも２個の係止孔を有する係合部とにより構成したものである。
【００１８】
【発明の実施の形態】
実施の形態１．
図１は本発明の実施の形態１の外観図およびその断面で示した作用説明図である。図において、１は例えば後述する液体混注具の本体を構成するハウジングの基端部である混注口側に接続される接続具のコネクターで、例えばポリカーボネートまたは軟質のポリプロピレンなどの透明なプラスチック材料により構成されている。
【００１９】
コネクター１は、有蓋円筒状のフード部２と、フード部２の蓋部内側のほぼ中心部に設けられ、先端部３ｂの外壁の外径が先端に向かって縮径された鈍針３と、フード部２の蓋部外側のほぼ中心部に設けられ、鈍針３の内腔３ａに連通する内腔４ａを有し、混注部品または側注部品である例えば延長チューブ７の先端部または注射筒のルアーチップ（図示せず）が連結されるメスルアー状に形成された連結部４とを備えている。また、フード部２の胴部２ａの先端部側には、鈍針３の軸方向（挿入方向）とほぼ平行で先端部が開口されたほぼＩ字状の溝部５ａを設け、その溝部５ａの基端部に溝部５ａと直交する方向に設けられた第１の係止孔５ｂと、溝部５ａのほぼ中間部に溝部５ａと直交しかつ第１の係止孔５ｂと同方向に設けられた第２の係止孔５ｃとを形成した係合部５が設けられており、胴部２ａの係合部５の近傍には、ほぼ矩形状に開口された窓部６が設けられている。なお、第２の係止孔５ｃを第１の係止孔５ｂと反対方向に設けてもよい。
【００２０】
１１は接続具の混注部であるＹ型の液体混注具の本体を構成し、コネクター１とほぼ同じ材料からなるハウジングで、両端部に混注口１２と流出口１３とをそれぞれ有する管状体であり、かつその中間部に内腔１４ａがハウジング１１の内腔１１ａに連通し、先端部に注入口１５を有する分岐管１４が形成されている。そして、使用時においては、流出口１３および注入口１５に延長チューブ８，９がそれぞれ結合される。１６はほぼ中心部に垂直に設けたスリット１６ａを有し、このスリット１６ａに沿ってコネクター１の鈍針３が穿刺されるゴム状弾性体で、例えば天然ゴムまたはイソプロピレンゴム等の合成ゴム材料からなり、厚さが３ｍｍ以上８ｍｍ以下で、好ましくは４ｍｍ以上５ｍｍ以下に形成されている。なお、ゴム状弾性体１６の厚さが３ｍｍ未満であると、鈍針３の先端部３ｂをゴム状弾性体１６のほぼ中間部で位置させたときに先端部３ｂがゴム状弾性体１６によって閉塞されず、ゴム状弾性体１６の厚さが８ｍｍを越えると、鈍針３をゴム状弾性体１６に穿刺する際の抵抗が大きくなり、穿刺操作がしにくくなってしまう。
【００２１】
１７はハウジング１１の混注口１２の外周部に一体に形成され、外径がコネクター１のフード部２の胴部２ａの内径とほぼ等しく、その胴部２ａ内に摺動かつ回動可能に嵌合される有底円筒状の接続部で、ゴム状弾性体１６を混注口１２の上部に固定している。また、接続部１７の外壁１７ａにはコネクター１のフード部２の胴部２ａに設けられた係合部５に係止する突起部１８が設けられており、外壁１７ａの突起部１８の近傍には、「開」および「閉」の文字部１９が設けられていて、突起部１８を係合部５の第１の係止孔５ｂに係止したときに、「開」の文字部１９がフード部２の胴部２ａに設けられた窓部６に表示される。
【００２２】
そして、フード部２の胴部２ａ内に接続部１７を嵌合し、係合部５の溝部５ａに突起部１８を嵌入して第１の係止孔５ｂに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って深く穿刺して貫通し、鈍針３の先端部３ｂがハウジング１１の内腔１１ａ内に位置するとともに、窓部６に「開」の文字部１９が表示されて、コネクター１の連結部４に連結された例えば延長チューブ７から鈍針３を介して行われる他の薬液の投与、つまり混注が行われる。また、第２の係止孔５ｃに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って浅く穿刺して鈍針３の先端部３ｂがゴム状弾性体１６のほぼ中間部に位置し、ゴム状弾性体１６によって閉塞されるとともに、「閉」の文字部１９がフード部２の先端部近傍に表示されて、コネクター１の連結部４に連結された例えば延長チューブ７からの他の薬液の投与、つまり混注が遮断されて中断される。
【００２３】
このように構成されたこの実施の形態１において、主薬液の輸液中に他の薬液を持続的に混注する場合、まず、患者の血管に留置した留置針の基部（図示せず）に延長チューブ８の先端部を連結し、図１（ｂ）の矢印Ｘに示すように、主薬液を延長チューブ９からメインルートである注入口１５へ送って分岐管１４の内腔１４ａからハウジング１１の内腔１１ａへ送り、ハウジング１１の流出口１３および延長チューブ８から患者側（血管）に投与する。
【００２４】
ついで、図２に示すように、ハウジング１１の接続部１７にコネクター１のフード部２を嵌合させつつ、ゴム状弾性体１６に針部３をスリット１６ａに沿って穿刺させ、接続部１７の突起部１８をコネクター１の係合部５の第１の係止孔５ｂに係止して、針部３の先端部３ｂをゴム状弾性体１６を貫通させハウジング１１の内腔１１ａ内に位置させる。この時、フード部２の窓部６には、接続部１７の外壁１７ａに設けられた「開」の文字部１９が表示される。そして、図２（ｂ）の矢印Ｙに示すように、延長チューブ７からの他の薬液を、連結部４の内腔４ａから鈍針３の内腔３ａへの混注ルートを通ってハウジング１１の内腔１１ａへ送り、メインルート（図２（ｂ）の矢印Ｘ）からの主薬液とハウジング１１の内腔１１ａ内で混合させつつ流出口１３および延長チューブ８から患者側（血管）に持続的に混注する。
【００２５】
持続的混注を中断する場合は、ハウジング１１の接続部１７に嵌合しているコネクター１のフード部２を回動および摺動して突起部１８の係合部５の第１の係止孔５ｂへの係止を解除し、図１に示すように、突起部１８を係合部５の第２の係止孔５ｃに係止して、鈍針３の先端部３ｂをゴム状弾性体１６のほぼ中間部に位置させる。この時、フード部２の窓部６には何も表示されず、フード部２の先端部近傍には、接続部１７の外壁１７ａに設けられた「閉」の文字部１９が表示される。そして、鈍針３の先端部３ｂはゴム状弾性体１６によって閉塞され、延長チューブ７からハウジング１１への他の薬液の混注ルート（図１（ｂ）の矢印Ｙ）をゴム状弾性体１６により遮断し、持続的混注を中断する。
【００２６】
また、持続的混注を再開する場合は、ハウジング１１の接続部１７に嵌合しているコネクター１のフード部２を回動および摺動して突起部１８の係合部５の第２の係止孔５ｃへの係止を解除し、図２に示すように、突起部１８を係合部５の第１の係止孔５ｂに再び係止して、鈍針３の先端部３ｂをゴム状弾性体１６を貫通させてハウジング１１の内腔１１ａ内に位置させる。この時、フード部２の窓部６には、接続部１７の外壁１７ａの「開」の文字部１９が再び表示される。そして、延長チューブ７からの他の薬液を、開放された混注ルート（図２（ｂ）の矢印Ｙ）を通ってハウジング１１の内腔１１ａへ再び送り、メインルート（図２（ｂ）の矢印Ｘ）からの主薬液と混合させつつ流出口１３および延長チューブ８から患者側（血管）に送って、持続的混注を再開する。
【００２７】
このように、ハウジング１１の接続部１７にコネクター１のフード部２を嵌合したとき、接続部１７の外壁１７ａに設けられた突起部１８を、フード部２の胴部２ａに設けた係合部５の第１および第２の係止孔５ｂ，５ｃに係止することによって、鈍針３のゴム状弾性体１６への挿入深さを２段階に設定し、持続的混注を実行または再開する場合は、突起部１８を第１の係止孔５ｂに係止して、鈍針３の先端部３ｂをゴム状弾性体１６に深く挿入、つまりゴム状弾性体１６を貫通させてハウジング１１の内腔１１ａ内に位置させ、延長チューブ７からの他の薬液を、混注ルートを通ってハウジング１１側に注入させる。また、持続的混注を中断する場合は、突起部１８を第２の係止孔５ｃに係止して、鈍針３の先端部３ｂをゴム状弾性体１６に浅く挿入、つまりゴム状弾性体１６のほぼ中間部に位置させて、鈍針３の先端部３ｂをゴム状弾性体１６により閉塞させ、延長チューブ７からの他の薬液の混注ルートを遮断させるようにした。
【００２８】
これにより、持続的混注等の中断および再開（実行）を、コネクター１の係合部５およびハウジング１１の突起部１８の簡単な操作で行うことができる。また、中断中の鈍針３の先端部３ｂはゴム状弾性体１６によって閉塞されているため、使用中のコネクター１を新しいものと交換しなくても、ハウジング１１への細菌の侵入を阻止して感染を防止することができ、使用中のコネクター１を継続して用いることができる接続具を得ることができる。
【００２９】
また、コネクター１のフード部２に設けた窓部６と、ハウジング１１の接続部１７の外壁１７ａに設けた「開」および「閉」の文字部１９とによって、現在行われている試技、つまり持続的混注等の中断および実行（再開）をコネクター１およびハウジング１１側で視覚的に認識することができるため、医療従事者の誤操作を防ぐことができる。
【００３０】
実施の形態２．
図３（ａ）は本発明の実施の形態２に係るコネクターの外観図で、この実施の形態２は、実施の形態１に係るコネクター１のフード部２の胴部２ａに設けられた係合部５に代えて、フード部２の胴部２ａの先端部側に鈍針３の軸方向（挿入方向）とほぼ平行で先端部が開口されたほぼＩ字状の溝部１０ａを設け、その溝部１０ａの基端部から胴部２ａの先端部に向かって傾斜した第１の係合部１０ｂと、溝部１０ａのほぼ中間部に第１の係合部１０ｂと同方向でかつ胴部２ａの先端部に向かって傾斜した第２の係止孔１０ｃとを形成した係合部１０を設けたものである。
【００３１】
そして、係合部１０の溝部１０ａに接続部１７に設けられた突起部１８を嵌入して第１の係止孔１０ｂに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って深く穿刺して貫通し、鈍針３の先端部３ｂがハウジング１１の内腔１１ａ内に位置する。また、第２の係止孔１０ｃに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って浅く穿刺して鈍針３の先端部３ｂがゴム状弾性体１６のほぼ中間部に位置し、先端部３ｂがゴム状弾性体１６によって閉塞されるように構成されている。
【００３２】
このように構成したことにより、実施の形態１とほぼ同じ作用および効果が得られ、ハウジング１１の接続部１７に設けられた突起部１８をコネクター１のフード部２の胴部２ａに設けられた係合部１０の第１の係止孔１０ｂまたは第２の係止孔１０ｃに係止することによって、鈍針３のゴム状弾性体１６への挿入深さを２段階に設定することができ、鈍針３の先端部３ｂをハウジング１１の内腔１１ａ内で開放またはゴム状弾性体１６で閉塞することができる。これにより、ハウジング１１への細菌の侵入を阻止して感染を防止しながら、持続的混注の中断または再開を簡単かつ確実に行うことができる。また、第１の係止孔１０ｂおよび第２の係止孔１０ｃは、溝部１０ａから胴部２ａの先端部に向かって傾斜しているので、第１の係止孔１０ｂまたは第２の係止孔１０ｃに係止された突起部１８がその位置から外れにくくなり、行う試技をより確実にするとともに、その状態を長く保持することができる。
【００３３】
実施の形態３．
図３（ｂ）は本発明の実施の形態３に係るコネクターの外観図で、この実施の形態３は、実施の形態１に係るコネクター１の係合部５に代えて、フード部２の胴部２ａの先端部側に鈍針３の軸方向（挿入方向）とほぼ平行で先端部が開口されたほぼＩ字状の溝部２０ａを設け、その溝部２０ａの基端部から胴部２ａの先端部に向かって傾斜した第１の係止孔２０ｂと、溝部２０ａのほぼ中間部に第１の係止孔２０ｂと反対方向から胴部２ａの先端部に向かって傾斜した第２の係止孔２０ｃとを形成した係合部２０を設けたものである。
【００３４】
そして、係合部２０の溝部２０ａに接続部１７の突起部１８を嵌入して第１の係止孔２０ｂに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って深く穿刺して貫通し、鈍針３の先端部３ｂがハウジング１１の内腔１１ａ内に位置する。また、第２の係止孔２０ｃに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って浅く穿刺して鈍針３の先端部３ｂがゴム状弾性体１６のほぼ中間部に位置し、先端部３ｂがゴム状弾性体１６によって閉塞されるように構成されている。
【００３５】
このように構成したことにより、実施の形態１とほぼ同じ作用および効果が得られ、ハウジング１１の接続部１７の突起部１８をコネクター１のフード部２の胴部２ａに設けられた係合部２０の第１の係止孔２０ｂまたは第２の係止孔２０ｃに係止することによって、鈍針３のゴム状弾性体１６への挿入深さを２段階に設定することができ、鈍針３の先端部３ｂをハウジング１１の内腔１１ａ内で開放またはゴム状弾性体１６で閉塞することができる。これにより、ハウジング１１への細菌の侵入を阻止して感染を防止しながら、持続的混注の中断または再開を簡単かつ確実に行うことができる。また、第１の係止孔２０ｂおよび第２の係止孔２０ｃを溝部２０ａを中心に異なる方向に設けたので、突起部１８の第１の係止孔２０ｂおよび第２の係止孔２０ｃへの係止が行いやすくなり、持続的混注の中断または再開の操作の誤りを防ぐことができる使い勝手のよい接続具を得ることができる。
【００３６】
実施の形態４．
図３（ｃ）は本発明の実施の形態４に係るコネクターの外観図で、この実施の形態４は、実施の形態１に係るコネクターの係合部５に代えて、フード部２の胴部２ａの先端部側に鈍針３の軸方向（挿入方向）とほぼ平行で先端部が開口されたほぼＩ字状の溝部３０ａを設け、その溝部３０ａの基端部から胴部２ａの先端部に向かって傾斜した第１の係止孔３０ｂと、溝部３０ａの基端部の第１の係止孔３０ｂとは反対方向から胴部２ａの先端部に向かって傾斜し、第１の係止孔３０ｂより胴部２ａの先端部側に位置する第２の係止孔３０ｃとを形成した係合部３０を設けたものである。
【００３７】
そして、係合部３０の溝部３０ａに接続部１７の突起部１８を嵌入して第１の係止孔３０ｂに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って深く穿刺して貫通し、鈍針３の先端部３ｂがハウジング１１の内腔１１ａ内に位置する。また、第２の係止孔３０ｃに突起部１８を係止させると、コネクター１の鈍針３がゴム状弾性体１６のスリット１６ａに沿って浅く穿刺して鈍針３の先端部３ｂがゴム状弾性体１６のほぼ中間部に位置し、先端部３ｂがゴム状弾性体１６によって閉塞されるように構成されている。
【００３８】
このように構成したことにより、実施の形態１とほぼ同じ作用および効果が得られ、ハウジング１１の接続部１７の突起部１８をコネクター１のフード部２の胴部２ａに設けられた係合部３０の第１の係止孔３０ｂまたは第２の係止孔３０ｃに係止することによって、鈍針３のゴム状弾性体１６への挿入深さを２段階に設定することができ、鈍針３の先端部３ｂをハウジング１１の内腔１１ａ内で開放またはゴム状弾性体１６で閉塞することができる。これにより、ハウジング１１への細菌の侵入を阻止して感染を防止しながら、持続的混注の中断または再開を簡単かつ確実に行うことができる。また、第１の係止孔３０ｂおよび第２の係止孔３０ｃを溝部３０ａの基端部でかつ溝部３０ａを中心に異なる方向に設けたので、突起部１８の第１の係止孔３０ｂおよび第２の係止孔３０ｃへの係止を、コネクター１を回動させることにより簡単に行うことができ、誤操作を防ぐとともに使い勝手のよい接続具を得ることができる。
【００３９】
以上本発明の実施の形態について説明したが、本発明はこれに限定するものではなく、例えば以下の如く適宜変更することができる。
（１）上述の実施の形態ではＹ型の液体混注具にコネクター１を接続し、他の薬液の持続的混注を中断する場合を例示して説明したが、例えばカテーテルの基端部に連結される注入用コネクターなどでゴム状弾性体を有する混注部にコネクター１を接続してもよく、また、例えば主薬液の中断等を行ってもよい。これらの場合も同様の効果を奏する。
【００４０】
（２）上述の実施の形態ではコネクター１に例えば２つの係止孔５ｂ，５ｃを有する係合部５を設け、鈍針３のゴム状弾性体１６への挿入深さを２段階に設定した場合を示したが、係止孔を複数設け、鈍針３の挿入深さを多段階に設定できるようにしてもよい。この場合も、同様の効果を奏する。
【００４１】
（３）上述の実施の形態ではコネクター１に鈍針３を設けた場合を示したが、従来例と同様に先端部が鋭利な針部を設けてもよい。この場合も同様の効果を奏する。
【００４２】
（４）上述の実施の形態ではコネクター１のフード部２に窓部６を設け、ハウジング１１の接続部１７の外壁１７ａに「開」および「閉」の文字部１９が設けて、突起部１８が例えば係合部５の第１の係止孔５ｂに係止したときに「開」の文字部１９が窓部６に表示される場合を例示して説明したが、これに限定するものではなく、窓部６の位置を変更して、突起部１８が例えば係合部５の第２の係止孔５ｃに係止したときに「閉」の文字部１９が窓部６に表示されるようにしたり、突起部１８の係止位置に対応して「開」および「閉」の両方の文字部１９を窓部６に表示させるようにしてもよく、窓部６を複数設けて両方の文字部１９をそれぞれ表示させるようにしてもよい。また、文字部１９は文字に限らず記号等を用いてもよい。
【００４３】
【発明の効果】
以上のように本発明に係る接続具は、基端部に外部を遮断するゴム状弾性体が取り付けられた薬液流入口を有する混注部と、内腔内にゴム状弾性体に穿刺される針部を有し、内腔内に混注部の基端部が着脱可能かつ摺動および回動可能に接続されるコネクターとを備えてなり、混注部の基端部の外壁に突起部を設けるとともに、コネクターの外周部に、突起部が係止される少なくとも２個の係止孔を有し、先端部が開口された係合部を設け、突起部の係止孔への係止位置により、針部の先端部のゴム状弾性体への挿入深さを少なくとも２段階に設定できるようにし、コネクターを混注部に深く接続させたときに、コネクターの針部の先端部が混注部のゴム状弾性体を貫通して混注部の内腔内に位置し、コネクターを混注部に浅く接続させたときに、コネクターの針部の先端部が混注部のゴム状弾性体内に位置して針部の先端部をゴム状弾性体により閉塞するようにしたので、コネクター側からの薬液投与の中断および再開を、接続具側の操作によるコネクターの混注部への接続の深さで簡単に操作することができるとともに、使用中のコネクターを新しいものと交換することなく継続して用いても、混注部への細菌の侵入を阻止して感染を防止することができる使い勝手のよい接続具を得ることができる。
【００４５】
本発明に係る接続具は、コネクターの係合部を、針部の挿入方向とほぼ平行で先端部が開口されたほぼＩ字状の溝部と、溝部の基端部に溝部と直交する方向に設けられた第１の係止孔と、溝部のほぼ中間部に溝部と直交しかつ第１の係止孔と同方向または反対方向に設けられた第２の係止孔とにより構成したので、コネクター側からの薬液投与の中断および再開を、混注部への細菌の侵入を阻止して感染を防止しながらコネクターの係合部の係止孔に混注部の突起部を係止するだけの簡単な操作で行うことができ、使い勝手のよい接続具を得ることができる。
【００４６】
本発明に係る接続具は、コネクターの係合部を、針部の挿入方向とほぼ平行で先端部が開口されたほぼＩ字状の溝部と、溝部の基端部からコネクターの先端部に向かって傾斜した第１の係止孔と、溝部の基端部の第１の係止孔と反対方向からコネクターの先端部に向かって傾斜し第１の係止孔より先端部側に位置する第２の係止孔とにより構成したので、コネクター側からの薬液投与の中断または再開を、細菌による感染を防止しながら簡単かつ確実に行うことができるとともに、溝部から混注部の先端部に向かって傾斜した第１の係止孔および第２の係止孔によって、突起部の係止孔への係止が外れにくくなり、行う試技をより確実にしかつその状態を長く保持することができる接続具が得られる。また、第１の係止孔および第２の係止孔を溝部を中心に異なる方向に設けた場合は、突起部の係止孔への係止がより行いやすくなり、薬液投与の中断または再開の操作の誤りも防ぐことができる。
【００４７】
本発明に係る接続具は、コネクターの係合部を、針部の挿入方向とほぼ平行で先端部が開口されたほぼＩ字状の溝部と、溝部の基端部からコネクターの先端部に向かって傾斜した第１の係止孔と、溝部の基端部の第１の係止孔と反対方向からコネクターの先端部に向かって傾斜し第１の係止孔よりコネクターの先端部側に位置する第２の係止孔とにより構成したので、コネクター側からの薬液投与の中断および再開を細菌による感染を防止しながら簡単かつ確実に行うことができるとともに、溝部の基端部でかつ溝部を中心に異なる方向に設けた第１の係止孔および第２の係止孔によって、突起部の係止孔への係止をコネクターを回動させることでより簡単に行うことができ、誤操作を防ぐとともに使い勝手のよい接続具を得ることができる。
【００４９】
本発明に係る接続具は、コネクターの外周部に設けられた係合部の近傍に、開口された窓部を設けるとともに、混注部の基端部の外壁に、コネクターの接続位置に対応して窓部から表示する文字部を設けたので、コネクター側からの薬液投与の中断および再開を接続具側で視覚的に認識することができ、医療従事者の操作を容易にし誤操作を防ぐことができる。
【００５０】
本発明に係る接続具は、コネクターを、混注部の基端部の外側に着脱可能かつ摺動および回動可能に嵌合される有蓋円筒状のフード部と、フード部の蓋部内側のほぼ中心部に設けられ、混注部の基端部がフード部内に嵌合されたときに混注部のゴム状弾性体に穿刺される鈍針と、フード部の蓋部外側のほぼ中心部に設けられ、鈍針の内腔に連通する内腔を有し、混注部品または側注部品が連結または結合される連結部と、フード部の外周部の先端部側に設けられ混注部の突起部が係止される少なくとも２個の係止孔を有する係合部とにより構成したので、上記のような効果を得ることができる。
【図面の簡単な説明】
【図１】本発明の実施の形態１の外観図およびその断面で示した作用説明図である。
【図２】本発明の実施の形態１の作用説明図である。
【図３】本発明の実施の形態２，３および４に係るコネクター１の外観図である。
【図４】従来の代表的なＹ型の液体混注具およびそれに接続して用いられるコネクターの一部を断面で示した外観図と、その作用説明図である。
【符号の説明】
１コネクター
２フード部
３鈍針
４接続部
５，１０，２０，３０係合部
５ａ，１０ａ，２０ａ，３０ａ溝部
５ｂ，１０ｂ，２０ｂ，３０ｂ第１の係止孔
５ｃ，１０ｃ，２０ｃ，３０ｃ第２の係止孔
６窓部
７，８，９延長チューブ
１１ハウジング
１２混注口
１６ゴム状弾性体
１７接続部
１８突起部
１９文字部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid co-infusion device such as a liquid co-infusion device and a catheter used when injecting a chemical solution into an infusion line or the like temporarily or for a long term or collecting blood from an arterial / venous line, etc., and a lumen connected thereto The present invention relates to a connector comprising a connector that allows a chemical solution or the like to flow into a co-injection portion by a needle portion provided therein.
[0002]
[Prior art]
In the case of injecting other medicinal solutions during various nutritional administrations including central parenteral nutrition therapy, a mixed injection part that is a connecting device to which an infusion line of another route prepared in advance in the middle of the infusion route is connected, and A method using a connector is usually used. As a means used for this co-infusion part, a septum that prevents the entry of bacteria from the infusion line and can reduce the chance of infection, that is, a septum that cuts off from the outside, that is, a co-infusion part having a rubber-like elastic body is used. Yes.
[0003]
FIG. 4 is an external view showing a section of a conventional typical Y-type liquid co-infusion device and a connector used in connection therewith, and an operation explanatory view thereof. In the figure, 51 is a housing constituting the main body of a Y-type liquid co-infusion device of a connector, which is a tubular body having a co-infusion port 52 and an outflow port 53 at both ends, and a branch pipe 54 is generally provided at an intermediate portion. It is formed and has an inlet 55 at its end. Reference numeral 56 denotes a rubber-like elastic body that seals the mixed injection port 52, and is held in the mixed injection port 52 by a cap 57 fitted to the mixed injection port 52. Reference numeral 58 denotes two external screws provided on the outer wall of the housing 51, and 59 denotes a stepped portion provided on the branch pipe 54 side of the outer screw 58 on the outer wall of the housing 51 to block the distal end portion of the hood portion of the connector described later.
[0004]
A connector 60 is connected to the side of the mixed injection port 52 which is the base end of the housing 51. The connector 60 is formed in a covered cylindrical shape having an inner diameter substantially equal to the outer diameter of the cap 57. Hood portion 61 in which the side of the mixed injection port 52 is slidably and rotatably fitted and two inner screws 62 screwed into the outer screw 58 of the housing 51 are provided on the inner wall, and the outer side of the lid portion of the hood portion 61 The substantially cylindrical connecting portion 63 provided at the substantially central portion and the lumen 64a at the substantially central portion, and the base side is inserted into the lumen 64a at one end and punctured into the rubber-like elastic body 56. A connecting portion 64 that is connected to a connecting portion 63 so that the needle portion 65 is positioned in the hood portion 61. It is made up of.
[0005]
The branch tube 54 side where the extension tube 67 is coupled to the injection port 55 serves as a main route, and the main drug solution passes through the main route from the extension tube 68 coupled to the outlet 53 of the housing 51 to the patient side (blood vessel or the like). ). 4B, the hood portion 61 of the connector 60 is fitted on the mixed injection port 52 side of the housing 51, and the connector 60 is connected to the housing 51 by the external screw 58 and the internal screw 62 while being rubbery. The side of the co-infusion port 52 where the needle portion 65 is pierced into the elastic body 56 is used as a co-infusion route, and as shown in the arrow Y in FIG. It is continuously administered from the extension tube 68 connected to the outflow port 53 to the patient side (blood vessel or the like) while being mixed with the main drug solution (arrow X in FIG. 4B).
[0006]
When the administration of another chemical solution is to be terminated, the screwing between the external screw 58 provided in the housing 51 and the internal screw 62 of the connector 60 is loosened, and the connector 60 is pulled in the direction in which the needle portion 65 is removed from the rubber-like elastic body 56. Pull to release.
[0007]
[Problems to be solved by the invention]
Since the liquid co-infusion device and the connector 60, which are the conventional connectors as described above, do not have a special function when the administration of other chemical solutions is interrupted, as in the case of terminating the administration of other chemical solutions, The external thread 58 provided in the housing 51 and the internal thread 62 of the connector 60 are loosened, and the connector 60 is pulled away in the direction in which the needle portion 65 is removed from the rubber-like elastic body 56, or a clamp or roller is used. The extension tube 66 is closed using a clamp or the like to block the mixed injection route from the needle portion 65 to the housing 51.
[0008]
However, in either case, the operation is troublesome. Once the connector 60 is detached as in the former case, the connector 60 cannot be used again due to problems such as infection by bacteria. Had to be replaced. For this reason, the interruption work has become more time-consuming. Also, when the extension tube 66 is closed with a clamp or the like and the mixed injection route is blocked as in the latter case, it is difficult to determine whether or not the mixed injection route is blocked because the interruption operation is not performed on the liquid mixed injection device side. In some cases, the administration of the drug solution was continued without being completely blocked. For this reason, a medical worker such as a doctor or a nurse has to spend a long time to check whether the administration of the chemical solution is interrupted, which is troublesome. Further, in the latter case, there is a problem that the chemical solution remains between the clamped portion of the extension tube 66 and the needle tip of the needle portion 65, thereby creating a staying portion.
[0009]
The present invention has been made to solve the above-mentioned problems, and can easily and reliably interrupt the administration of a chemical solution, and can be infected by bacteria even if it is continuously used without exchanging the one in use. It is an object of the present invention to provide an easy-to-use connector that can prevent the above-described problem.
[0010]
[Means for Solving the Problems]
The connector according to the present invention has a mixed injection portion having a chemical solution inlet with a rubber-like elastic body that blocks the outside at the base end portion, and a needle portion that is punctured by the rubber-like elastic body in the lumen. The base end of the co-injection part is detachably and slidably and rotatably connected in the lumen, Protrusions are provided on the outer wall of the base end of the co-injection part, and at the outer periphery of the connector, there are provided at least two engaging holes for engaging the protruding parts, and an engaging part with an open end is provided. The insertion depth of the tip portion of the needle portion into the rubber-like elastic body can be set in at least two stages depending on the locking position of the protruding portion to the locking hole, When the connector is deeply connected to the co-infusion part, the tip of the connector needle penetrates the rubber-like elastic body of the co-infusion part and is located in the lumen of the co-infusion part, and the connector is shallowly connected to the co-infusion part. In some cases, the tip of the needle portion of the connector is positioned in the rubber-like elastic body of the co-injection portion, and the tip of the needle portion is closed by the rubber-like elastic body.
[0012]
In the connector according to the present invention, the engaging portion of the connector is arranged in a direction substantially perpendicular to the groove portion at the proximal end portion of the groove portion and the substantially I-shaped groove portion having the distal end portion opened substantially parallel to the insertion direction of the needle portion. A first locking hole provided and a second locking hole provided at a substantially middle part of the groove part at right angles to the groove part and in the same direction as or opposite to the first locking hole. is there.
[0013]
The connector according to the present invention is configured so that the engaging portion of the connector is substantially parallel to the insertion direction of the needle portion and has a substantially I-shaped groove portion having an open front end portion, and a base end portion of the groove portion toward the distal end portion of the connector. And a second locking hole inclined in the same direction as or in the opposite direction to the first locking hole and toward the tip of the connector. Is.
[0014]
The connector according to the present invention is configured so that the engaging portion of the connector is substantially parallel to the insertion direction of the needle portion and has a substantially I-shaped groove portion having an open front end portion, and a base end portion of the groove portion toward the distal end portion of the connector. The first locking hole is inclined toward the distal end of the connector from the opposite direction to the first locking hole at the base end of the groove and is positioned closer to the distal end of the connector than the first locking hole. And a second locking hole.
[0016]
The connector according to the present invention is provided with an opened window in the vicinity of the engaging portion provided on the outer peripheral portion of the connector, and on the outer wall of the base end portion of the co-injection portion corresponding to the connection position of the connector. A character portion to be displayed from the window portion is provided.
[0017]
The connector according to the present invention includes a closed cylindrical hood portion that is detachably fitted to the outer side of the base end portion of the mixed injection portion and is slidable and rotatable, and an inner side of the lid portion of the hood portion. A blunt needle that is pierced into the rubber-like elastic body of the co-injection part when the base end part of the co-injection part is fitted in the hood part, and is provided at substantially the central part outside the lid part of the hood part. , Which has a lumen that communicates with the lumen of the blunt needle and is connected to or coupled to the mixed injection part or the side injection part, and the protrusion of the mixed injection part that is provided on the distal end side of the outer periphery of the hood part And an engaging portion having at least two locking holes to be stopped.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is an external view of Embodiment 1 of the present invention and an operation explanatory view shown in its cross section. In the figure, reference numeral 1 denotes a connector of a connector to be connected to the side of a co-injection port which is a base end portion of a housing constituting a main body of a liquid co-infusion device which will be described later, for example, composed of a transparent plastic material such as polycarbonate or soft polypropylene. Has been.
[0019]
The connector 1 is provided with a cylindrical hood portion 2 with a lid, a blunt needle 3 that is provided at a substantially central portion inside the lid portion of the hood portion 2, and whose outer diameter of the outer wall of the tip portion 3b is reduced toward the tip, For example, the distal end portion of the extension tube 7 or a syringe barrel which is provided in the substantially central portion outside the lid portion of the hood portion 2 and has a lumen 4a communicating with the lumen 3a of the blunt needle 3 and is a mixed injection component or a side injection component. And a connecting portion 4 formed in the shape of a female luer to which a lure tip (not shown) is connected. Further, a substantially I-shaped groove portion 5a having a distal end portion opened in parallel to the axial direction (insertion direction) of the blunt needle 3 is provided on the distal end side of the body portion 2a of the hood portion 2, and the groove portion 5a A first locking hole 5b provided in the base end portion in a direction orthogonal to the groove portion 5a and a substantially intermediate portion of the groove portion 5a provided in a direction orthogonal to the groove portion 5a and in the same direction as the first locking hole 5b. An engaging portion 5 having a second locking hole 5c is provided, and a window portion 6 opened in a substantially rectangular shape is provided in the vicinity of the engaging portion 5 of the body portion 2a. The second locking hole 5c may be provided in the opposite direction to the first locking hole 5b.
[0020]
Reference numeral 11 denotes a main body of a Y-type liquid co-infusion device which is a co-infusion portion of the connection device, and is a housing made of substantially the same material as the connector 1 and is a tubular body having co-infusion ports 12 and outlets 13 at both ends. In addition, a branch pipe 14 having an inner cavity 14 a communicating with the inner cavity 11 a of the housing 11 and an injection port 15 at the tip is formed. In use, the extension tubes 8 and 9 are coupled to the outlet 13 and the inlet 15, respectively. Reference numeral 16 denotes a rubber-like elastic body having a slit 16a provided substantially vertically at the center, and the blunt needle 3 of the connector 1 is pierced along the slit 16a. For example, a synthetic rubber material such as natural rubber or isopropylene rubber. The thickness is 3 mm or more and 8 mm or less, preferably 4 mm or more and 5 mm or less. If the rubber-like elastic body 16 has a thickness of less than 3 mm, the tip 3b is positioned by the rubber-like elastic body 16 when the tip 3b of the blunt needle 3 is positioned at a substantially middle portion of the rubber-like elastic body 16. If the rubber-like elastic body 16 is not closed and the thickness exceeds 8 mm, resistance when the blunt needle 3 is pierced into the rubber-like elastic body 16 increases, and the puncturing operation becomes difficult.
[0021]
17 is integrally formed on the outer peripheral portion of the mixed injection port 12 of the housing 11, and the outer diameter is substantially equal to the inner diameter of the barrel portion 2 a of the hood portion 2 of the connector 1 and is slidably and rotatably fitted in the barrel portion 2 a. The rubber-like elastic body 16 is fixed to the upper part of the mixed injection port 12 with a bottomed cylindrical connecting portion. Further, the outer wall 17a of the connecting portion 17 is provided with a protruding portion 18 that is engaged with the engaging portion 5 provided on the trunk portion 2a of the hood portion 2 of the connector 1, and in the vicinity of the protruding portion 18 of the outer wall 17a. Is provided with a character portion 19 of “open” and “closed”, and when the protrusion 18 is locked in the first locking hole 5b of the engaging portion 5, the character portion 19 of “open” is It is displayed on the window 6 provided in the trunk 2a of the hood 2.
[0022]
And when the connection part 17 is fitted in the trunk | drum 2a of the food | hood part 2, the protrusion part 18 is inserted in the groove part 5a of the engaging part 5, and the protrusion part 18 is latched in the 1st locking hole 5b. The blunt needle 3 of the connector 1 penetrates deeply through the slit 16a of the rubber-like elastic body 16, and the distal end portion 3b of the blunt needle 3 is located in the inner cavity 11a of the housing 11, and the window portion 6 The character portion 19 of “open” is displayed, and other drug solution, for example, mixed injection, is performed through the blunt needle 3 from the extension tube 7 connected to the connecting portion 4 of the connector 1. When the protrusion 18 is locked in the second locking hole 5c, the blunt needle 3 of the connector 1 is punctured shallowly along the slit 16a of the rubber-like elastic body 16, and the tip 3b of the blunt needle 3 is rubber. The elastic body 16 is positioned substantially in the middle and is closed by the rubber-like elastic body 16, and the character portion 19 of “closed” is displayed near the front end portion of the hood portion 2, and is connected to the connecting portion 4 of the connector 1. The administration of other chemicals from the connected extension tube 7, that is, mixed injection, is interrupted and interrupted.
[0023]
In the first embodiment configured as described above, when continuously injecting another drug solution during the infusion of the main drug solution, first, an extension tube is provided at the base (not shown) of the indwelling needle placed in the patient's blood vessel. 8 is connected, and as shown by an arrow X in FIG. 1B, the main drug solution is sent from the extension tube 9 to the injection port 15 which is the main route, and from the lumen 14a of the branch pipe 14 to the inside of the housing 11. It sends to the cavity 11a and is administered to the patient side (blood vessel) from the outlet 13 of the housing 11 and the extension tube 8.
[0024]
Next, as shown in FIG. 2, while the hood portion 2 of the connector 1 is fitted to the connection portion 17 of the housing 11, the needle portion 3 is punctured along the slit 16 a in the rubber-like elastic body 16, and The protruding portion 18 is locked in the first locking hole 5 b of the engaging portion 5 of the connector 1, and the distal end portion 3 b of the needle portion 3 passes through the rubber-like elastic body 16 and is positioned in the lumen 11 a of the housing 11. Let At this time, a character portion 19 of “open” provided on the outer wall 17 a of the connection portion 17 is displayed on the window portion 6 of the hood portion 2. Then, as shown by an arrow Y in FIG. 2 (b), another chemical solution from the extension tube 7 passes through the mixed injection route from the inner lumen 4 a of the connecting portion 4 to the inner lumen 3 a of the blunt needle 3. It is sent to the lumen 11a and is continuously mixed from the outflow port 13 and the extension tube 8 to the patient side (blood vessel) while mixing the main drug solution from the main route (arrow X in FIG. 2B) in the lumen 11a of the housing 11. To be mixed.
[0025]
When the continuous mixed injection is interrupted, the hood portion 2 of the connector 1 fitted to the connection portion 17 of the housing 11 is rotated and slid, and the first locking hole of the engagement portion 5 of the projection portion 18 is obtained. As shown in FIG. 1, the protrusion 18 is locked in the second locking hole 5c of the engaging portion 5, and the tip 3b of the blunt needle 3 is fixed to a rubber-like elastic body. 16 is located approximately in the middle. At this time, nothing is displayed on the window portion 6 of the hood portion 2, and a “closed” character portion 19 provided on the outer wall 17 a of the connection portion 17 is displayed in the vicinity of the distal end portion of the hood portion 2. The tip 3b of the blunt needle 3 is closed by the rubber-like elastic body 16, and another mixture of chemicals from the extension tube 7 to the housing 11 (arrow Y in FIG. 1B) is routed by the rubber-like elastic body 16. Block and discontinue continuous infusion.
[0026]
When resuming continuous mixed injection, the hood portion 2 of the connector 1 fitted to the connection portion 17 of the housing 11 is rotated and slid to move the second engagement of the engagement portion 5 of the projection portion 18. The locking to the stop hole 5c is released, and as shown in FIG. 2, the protrusion 18 is locked again to the first locking hole 5b of the engaging part 5, and the tip 3b of the blunt needle 3 is rubberized. The elastic body 16 is passed through and positioned in the lumen 11 a of the housing 11. At this time, the “open” character portion 19 of the outer wall 17 a of the connection portion 17 is displayed again on the window portion 6 of the hood portion 2. Then, another chemical solution from the extension tube 7 is sent again to the lumen 11a of the housing 11 through the opened mixed injection route (arrow Y in FIG. 2B), and the main route (arrow in FIG. 2B). The mixture is sent to the patient side (blood vessel) from the outlet 13 and the extension tube 8 while being mixed with the main drug solution from X), and the continuous co-infusion is resumed.
[0027]
Thus, when the hood part 2 of the connector 1 is fitted to the connection part 17 of the housing 11, the protrusion 18 provided on the outer wall 17 a of the connection part 17 is engaged with the trunk part 2 a of the hood part 2. By engaging with the first and second locking holes 5b and 5c of the portion 5, the insertion depth of the blunt needle 3 into the rubber-like elastic body 16 is set in two stages, and continuous mixed injection is executed or resumed. In this case, the protrusion 18 is locked in the first locking hole 5b, and the tip 3b of the blunt needle 3 is inserted deeply into the rubber-like elastic body 16, that is, the rubber-like elastic body 16 is passed through the housing 11. The other chemical solution from the extension tube 7 is injected into the housing 11 side through the co-infusion route. When the continuous mixed injection is interrupted, the protrusion 18 is locked in the second locking hole 5c, and the tip 3b of the blunt needle 3 is inserted shallowly into the rubber-like elastic body 16, that is, the rubber-like elastic body. 16, the tip 3 b of the blunt needle 3 is closed by the rubber-like elastic body 16, and the mixed injection route of other chemicals from the extension tube 7 is blocked.
[0028]
Thereby, interruption and resumption (execution) of continuous mixed injection and the like can be performed by a simple operation of the engaging portion 5 of the connector 1 and the protruding portion 18 of the housing 11. Further, since the tip 3b of the blunt needle 3 being interrupted is closed by the rubber-like elastic body 16, it is possible to prevent bacteria from entering the housing 11 without replacing the connector 1 in use with a new one. Thus, it is possible to prevent infection and obtain a connector that can continue to use the connector 1 in use.
[0029]
Further, the currently performed trial, that is, the opening portion 6 provided on the hood portion 2 of the connector 1 and the character portions 19 of “open” and “closed” provided on the outer wall 17a of the connection portion 17 of the housing 11, that is, Since interruption and execution (resumption) of continuous mixed injection and the like can be visually recognized on the connector 1 and housing 11 side, it is possible to prevent an erroneous operation of a medical worker.
[0030]
Embodiment 2. FIG.
FIG. 3A is an external view of the connector according to the second embodiment of the present invention. This second embodiment is an engagement provided on the body portion 2a of the hood portion 2 of the connector 1 according to the first embodiment. Instead of the portion 5, a substantially I-shaped groove portion 10 a having a distal end portion opened substantially parallel to the axial direction (insertion direction) of the blunt needle 3 is provided on the distal end side of the body portion 2 a of the hood portion 2. A first engaging portion 10b inclined from the base end portion of 10a toward the distal end portion of the body portion 2a, and a distal end of the body portion 2a at the substantially middle portion of the groove portion 10a in the same direction as the first engaging portion 10b. The engaging part 10 which formed the 2nd locking hole 10c inclined toward the part was provided.
[0031]
And if the projection part 18 provided in the connection part 17 is inserted in the groove part 10a of the engaging part 10, and the projection part 18 is latched in the 1st latching hole 10b, the blunt needle 3 of the connector 1 will be rubber-like. The elastic body 16 is deeply punctured and penetrated along the slit 16 a, and the distal end portion 3 b of the blunt needle 3 is located in the lumen 11 a of the housing 11. When the protrusion 18 is locked in the second locking hole 10c, the blunt needle 3 of the connector 1 is punctured shallowly along the slit 16a of the rubber-like elastic body 16, and the tip 3b of the blunt needle 3 is rubber. The distal end portion 3 b is positioned so as to be closed by the rubber-like elastic body 16.
[0032]
With this configuration, substantially the same operation and effect as in the first embodiment can be obtained, and the protrusion 18 provided on the connection portion 17 of the housing 11 is provided on the body portion 2a of the hood portion 2 of the connector 1. By engaging with the first locking hole 10b or the second locking hole 10c of the engaging portion 10, the insertion depth of the blunt needle 3 into the rubber-like elastic body 16 can be set in two stages. The distal end 3 b of the blunt needle 3 can be opened or closed with the rubber-like elastic body 16 in the inner cavity 11 a of the housing 11. Thereby, it is possible to simply and reliably stop or restart continuous mixed injection while preventing infection by preventing bacteria from entering the housing 11. Moreover, since the 1st locking hole 10b and the 2nd locking hole 10c incline toward the front-end | tip part of the trunk | drum 2a from the groove part 10a, the 1st locking hole 10b or the 2nd locking hole The protrusion 18 locked to the hole 10c is less likely to be removed from the position, and the trial to be performed can be made more reliable and the state can be held for a long time.
[0033]
Embodiment 3 FIG.
FIG. 3B is an external view of the connector according to the third embodiment of the present invention. This third embodiment replaces the engagement portion 5 of the connector 1 according to the first embodiment and replaces the body of the hood portion 2. A substantially I-shaped groove portion 20a having a distal end portion that is substantially parallel to the axial direction (insertion direction) of the blunt needle 3 is provided on the distal end portion side of the portion 2a, and the distal end of the body portion 2a extends from the proximal end portion of the groove portion 20a. A first locking hole 20b inclined toward the portion, and a second locking hole inclined toward the distal end of the body portion 2a from the opposite direction to the first locking hole 20b at a substantially middle portion of the groove portion 20a. The engaging part 20 formed with 20c is provided.
[0034]
Then, when the protrusion 18 of the connecting portion 17 is fitted into the groove 20a of the engagement portion 20 and the protrusion 18 is locked in the first locking hole 20b, the blunt needle 3 of the connector 1 becomes the rubber-like elastic body 16. The distal end 3b of the blunt needle 3 is located in the inner cavity 11a of the housing 11 through the deep slit 16a. When the protrusion 18 is locked in the second locking hole 20c, the blunt needle 3 of the connector 1 is punctured shallowly along the slit 16a of the rubber-like elastic body 16, and the tip 3b of the blunt needle 3 is rubber. The distal end portion 3 b is positioned so as to be closed by the rubber-like elastic body 16.
[0035]
With this configuration, substantially the same operation and effect as in the first embodiment can be obtained, and the protrusion 18 of the connection portion 17 of the housing 11 is provided on the body portion 2a of the hood portion 2 of the connector 1. By engaging the first locking hole 20b or the second locking hole 20c, the insertion depth of the blunt needle 3 into the rubber-like elastic body 16 can be set in two stages. 3 can be opened or closed with a rubber-like elastic body 16 in the inner cavity 11 a of the housing 11. Thereby, it is possible to simply and reliably stop or restart continuous mixed injection while preventing infection by preventing bacteria from entering the housing 11. Further, since the first locking hole 20b and the second locking hole 20c are provided in different directions with the groove 20a as the center, the first locking hole 20b and the second locking hole 20c of the projection 18 are provided. Therefore, it is possible to obtain an easy-to-use connector that can prevent the erroneous operation of the suspension or resumption of continuous mixed injection.
[0036]
Embodiment 4 FIG.
FIG. 3C is an external view of the connector according to the fourth embodiment of the present invention. This fourth embodiment replaces the engagement portion 5 of the connector according to the first embodiment and is a trunk portion of the hood portion 2. A substantially I-shaped groove 30a having a distal end opened substantially parallel to the axial direction (insertion direction) of the blunt needle 3 is provided on the distal end side of 2a, and the distal end of the body 2a extends from the proximal end of the groove 30a. The first locking hole 30b inclined toward the first and the first locking hole 30b at the base end of the groove 30a is inclined from the opposite direction toward the distal end portion of the body portion 2a. An engagement portion 30 is provided which forms a second locking hole 30c located on the distal end side of the body portion 2a from the hole 30b.
[0037]
Then, when the protrusion 18 of the connecting portion 17 is fitted into the groove 30 a of the engaging portion 30 and the protrusion 18 is locked in the first locking hole 30 b, the blunt needle 3 of the connector 1 becomes the rubber-like elastic body 16. The distal end 3b of the blunt needle 3 is located in the inner cavity 11a of the housing 11 through the deep slit 16a. When the protrusion 18 is locked in the second locking hole 30c, the blunt needle 3 of the connector 1 is punctured shallowly along the slit 16a of the rubber-like elastic body 16, and the tip 3b of the blunt needle 3 is rubber. The distal end portion 3 b is positioned so as to be closed by the rubber-like elastic body 16.
[0038]
With this configuration, substantially the same operation and effect as in the first embodiment can be obtained, and the protrusion 18 of the connection portion 17 of the housing 11 is provided on the body portion 2a of the hood portion 2 of the connector 1. By engaging the first locking hole 30b or the second locking hole 30c, the insertion depth of the blunt needle 3 into the rubber-like elastic body 16 can be set in two stages. 3 can be opened or closed with a rubber-like elastic body 16 in the inner cavity 11 a of the housing 11. Thereby, it is possible to simply and reliably stop or restart continuous mixed injection while preventing infection by preventing bacteria from entering the housing 11. Further, since the first locking hole 30b and the second locking hole 30c are provided in different directions around the base end portion of the groove portion 30a and the groove portion 30a, the first locking hole 30b and The locking to the second locking hole 30c can be easily performed by rotating the connector 1, and an easy-to-use connector can be obtained while preventing erroneous operation.
[0039]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately modified as follows, for example.
(1) In the above-described embodiment, the case where the connector 1 is connected to the Y-type liquid co-infusion device and the continuous co-infusion of other chemical solutions is interrupted has been described as an example. The connector 1 may be connected to a co-injection portion having a rubber-like elastic body by an injection connector or the like, or the main drug solution may be interrupted, for example. These cases also have the same effect.
[0040]
(2) In the above embodiment, the connector 1 is provided with, for example, the engaging portion 5 having two locking holes 5b and 5c, and the insertion depth of the blunt needle 3 into the rubber-like elastic body 16 is set in two stages. Although the case has been shown, a plurality of locking holes may be provided so that the insertion depth of the blunt needle 3 can be set in multiple stages. In this case, the same effect can be obtained.
[0041]
(3) Although the case where the blunt needle 3 is provided in the connector 1 is shown in the above-described embodiment, a needle portion having a sharp tip may be provided as in the conventional example. In this case, the same effect is obtained.
[0042]
(4) In the above-described embodiment, the window portion 6 is provided in the hood portion 2 of the connector 1, the character portions 19 of “open” and “closed” are provided on the outer wall 17 a of the connection portion 17 of the housing 11, and the protrusion portion 18. For example, the case where the character portion 19 of “open” is displayed on the window portion 6 when locked in the first locking hole 5b of the engaging portion 5 has been described, but the present invention is not limited to this. Without changing the position of the window portion 6, a character portion 19 of “closed” is displayed on the window portion 6 when the protruding portion 18 is locked in the second locking hole 5 c of the engaging portion 5, for example. Alternatively, both the “open” and “closed” character portions 19 may be displayed on the window portion 6 corresponding to the locking positions of the protrusions 18. You may make it display the character part 19, respectively. Moreover, the character part 19 may use not only a character but a symbol.
[0043]
【The invention's effect】
As described above, the connection device according to the present invention includes a mixed injection portion having a chemical solution inlet having a rubber-like elastic body attached to the base end portion for blocking the outside, and a needle punctured by the rubber-like elastic body in the lumen. And a connector to which the proximal end portion of the co-injection portion is detachably and slidably and rotatably connected in the lumen, Protrusions are provided on the outer wall of the base end of the co-injection part, and at the outer periphery of the connector, there are provided at least two engaging holes for engaging the protruding parts, and an engaging part with an open end is provided. The insertion depth of the tip portion of the needle portion into the rubber-like elastic body can be set in at least two stages depending on the locking position of the protruding portion to the locking hole, When the connector is deeply connected to the co-infusion part, the tip of the connector needle penetrates the rubber-like elastic body of the co-infusion part and is located in the lumen of the co-infusion part, and the connector is shallowly connected to the co-infusion part. Sometimes, the tip of the connector needle is located in the rubber-like elastic body of the co-injection and the tip of the needle is closed by the rubber-like elastic body. The By operation on the connection side The connector can be easily operated at the depth of connection to the co-injection part, and even if the connector in use is used continuously without replacing it, it prevents bacteria from entering the co-infusion part. An easy-to-use connector that can prevent infection can be obtained.
[0045]
In the connector according to the present invention, the engaging portion of the connector is arranged in a direction substantially perpendicular to the groove portion at the proximal end portion of the groove portion and the substantially I-shaped groove portion having the distal end portion opened substantially parallel to the insertion direction of the needle portion. Since it is constituted by the first locking hole provided and the second locking hole provided at a substantially middle part of the groove part at right angles to the groove part and in the same direction as or opposite to the first locking hole, Simply interrupting and resuming drug administration from the connector side by simply locking the protrusion of the mixed injection part into the engagement hole of the connector engagement part while preventing bacteria from entering the mixed injection part and preventing infection It is possible to obtain an easy-to-use connector.
[0046]
The connector according to the present invention is configured so that the engaging portion of the connector is substantially parallel to the insertion direction of the needle portion and has a substantially I-shaped groove portion having an open front end portion, and a base end portion of the groove portion toward the distal end portion of the connector. And the first locking hole inclined to the distal end of the connector from the opposite direction to the first locking hole at the base end of the groove and positioned closer to the distal end than the first locking hole. Since it is composed of two locking holes, it is possible to interrupt and restart the administration of the chemical solution from the connector side easily and reliably while preventing infection by bacteria, and from the groove portion toward the tip of the mixed injection portion. The inclined first locking hole and the second locking hole make it difficult for the protrusions to be locked to the locking holes, thereby making it possible to more reliably perform the trial and keep the state for a long time. Is obtained. Further, when the first locking hole and the second locking hole are provided in different directions with the groove portion as the center, it becomes easier to lock the projection portion to the locking hole, and the suspension or resumption of the drug solution administration is performed. It is possible to prevent errors in operation.
[0047]
The connector according to the present invention is configured so that the engaging portion of the connector is substantially parallel to the insertion direction of the needle portion and has a substantially I-shaped groove portion having an open front end portion, and a base end portion of the groove portion toward the distal end portion of the connector. The first locking hole is inclined toward the distal end of the connector from the opposite direction to the first locking hole at the base end of the groove and is positioned closer to the distal end of the connector than the first locking hole. Since the second locking hole is configured to interrupt and restart the administration of the chemical solution from the connector side while preventing infection by bacteria, the groove portion is formed at the base end portion of the groove portion and the groove portion. With the first locking hole and the second locking hole provided in different directions in the center, the locking of the protruding portion to the locking hole can be performed more easily by rotating the connector, resulting in erroneous operation. It is possible to obtain a connector that is easy to use and prevents
[0049]
The connector according to the present invention is provided with an opened window in the vicinity of the engaging portion provided on the outer peripheral portion of the connector, and on the outer wall of the base end portion of the co-injection portion corresponding to the connection position of the connector. Since the character part to be displayed from the window is provided, it is possible to visually recognize the suspension and resumption of liquid medicine administration from the connector side on the connector side, making it easier for medical staff to operate and preventing erroneous operations. .
[0050]
The connector according to the present invention includes a closed cylindrical hood portion that is detachably fitted to the outer side of the base end portion of the mixed injection portion and is slidable and rotatable, and an inner side of the lid portion of the hood portion. A blunt needle that is pierced into the rubber-like elastic body of the co-injection part when the base end part of the co-injection part is fitted in the hood part, and is provided at substantially the central part outside the lid part of the hood part. , Which has a lumen that communicates with the lumen of the blunt needle and is connected to or coupled to the mixed injection part or the side injection part, and the protrusion of the mixed injection part that is provided on the distal end side of the outer periphery of the hood part Since it comprised by the engaging part which has at least 2 locking hole stopped, the above effects can be acquired.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an external view of Embodiment 1 of the present invention and an operation explanatory diagram shown in its cross section.
FIG. 2 is an operation explanatory diagram of Embodiment 1 of the present invention.
FIG. 3 is an external view of a connector 1 according to Embodiments 2, 3, and 4 of the present invention.
FIG. 4 is an external view showing a section of a conventional typical Y-type liquid co-infusion device and a connector used in connection therewith, and an operation explanatory view thereof.
[Explanation of symbols]
1 Connector
2 Food part
3 Blunt needle
4 connections
5, 10, 20, 30 Engagement part
5a, 10a, 20a, 30a Groove
5b, 10b, 20b, 30b First locking hole
5c, 10c, 20c, 30c Second locking hole
6 windows
7, 8, 9 Extension tube
11 Housing
12 Mixed injection port
16 Rubber elastic body
17 Connection
18 Protrusion
19 character

Claims

A mixture injection part having a chemical solution inlet having a rubber-like elastic body attached to the base end and blocking the outside; and a needle part pierced by the rubber-like elastic body in a lumen; A base end portion of the mixed injection portion is detachable and includes a connector connected to be slidable and rotatable,
A protrusion is provided on the outer wall of the base end portion of the mixed injection portion, and at least two locking holes for locking the protrusion are provided on the outer peripheral portion of the connector, and the distal end is opened. Provided with a portion, and the insertion depth of the tip of the needle portion into the rubber-like elastic body can be set in at least two stages according to the engagement position of the projection portion with the engagement hole,
When the connector is deeply connected to the co-infusion part, the tip of the needle part of the connector penetrates the rubber-like elastic body of the co-infusion part and is located in the lumen of the co-infusion part. The tip of the needle part of the connector is located in the rubber-like elastic body of the mixed-injection part and the tip of the needle part is blocked by the rubber-like elastic body when connected shallowly to the co-injection part. A connector characterized by.

An engagement portion of the connector is provided with a substantially I-shaped groove portion having a distal end portion that is substantially parallel to the insertion direction of the needle portion, and a first end portion provided at a base end portion of the groove portion in a direction perpendicular to the groove portion. It is constituted by a locking hole and a second locking hole which is provided at a substantially middle part of the groove part at right angles to the groove part and in the same direction as or opposite to the first locking hole. The connector according to claim 1.

An engagement portion of the connector includes a substantially I-shaped groove portion that is substantially parallel to the insertion direction of the needle portion and has a distal end portion opened, and a first inclined portion that is inclined from the proximal end portion of the groove portion toward the distal end portion of the connector . a locking hole of the said constituted by a second locking hole inclined front Symbol toward the tip portion of the first engaging hole and the same direction or in the opposite direction and the connector substantially in the middle of the groove The connecting device according to claim 1 .

An engagement portion of the connector includes a substantially I-shaped groove portion that is substantially parallel to the insertion direction of the needle portion and has a distal end portion opened, and a first inclined portion that is inclined from the proximal end portion of the groove portion toward the distal end portion of the connector. The first locking hole is inclined toward the distal end portion of the connector from the opposite direction to the first locking hole at the base end portion of the groove portion and is positioned closer to the distal end portion side of the connector than the first locking hole. The connection tool according to claim 1 , wherein the connection tool comprises a second locking hole.

An open window is provided in the vicinity of the engaging portion provided on the outer peripheral portion of the connector, and an indication is displayed on the outer wall of the proximal end portion of the mixed injection portion from the window portion corresponding to the connection position of the connector. The connection tool according to any one of claims 1 to 4, further comprising a character portion to be provided .

A connector is provided on the outer side of the base end portion of the mixed injection portion, and is provided with a cylindrical hood portion with a lid that is detachably fitted and slidable and rotatable, and substantially at the center inside the lid portion of the hood portion, A blunt needle that is pierced by the rubber-like elastic body of the mixed injection portion when the proximal end portion of the mixed injection portion is fitted into the hood portion, and is provided at a substantially central portion outside the lid portion of the hood portion. A connecting portion having a lumen communicating with the lumen of the needle and connected or coupled to the mixed injection component or the side injection component, and a protrusion of the mixed injection portion provided on the distal end side of the outer peripheral portion of the hood portion The connecting device according to claim 1, wherein the connecting device includes an engaging portion having at least two locking holes to be stopped .