JPWO2002072175A1 - Chemical liquid injection port and chemical liquid container including the same - Google Patents

Chemical liquid injection port and chemical liquid container including the same Download PDF

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JPWO2002072175A1
JPWO2002072175A1 JP2002571133A JP2002571133A JPWO2002072175A1 JP WO2002072175 A1 JPWO2002072175 A1 JP WO2002072175A1 JP 2002571133 A JP2002571133 A JP 2002571133A JP 2002571133 A JP2002571133 A JP 2002571133A JP WO2002072175 A1 JPWO2002072175 A1 JP WO2002072175A1
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chemical solution
chemical
injection port
passage
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JP4408338B2 (en
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高木 信雄
信雄 高木
貴光 大河原
貴光 大河原
公司 棟近
公司 棟近
徳秀 貴志
徳秀 貴志
忠昭 井上
忠昭 井上
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Nipro Corp
Mitsubishi Pharma Corp
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • A61J1/10Bag-type containers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/1443Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters
    • A61J1/145Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters using air filters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/1443Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters
    • A61J1/1456Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters using liquid filters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/20Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2003Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
    • A61J1/2006Piercing means
    • A61J1/201Piercing means having one piercing end
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/20Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2003Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
    • A61J1/2079Filtering means
    • A61J1/2086Filtering means for fluid filtration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/20Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2096Combination of a vial and a syringe for transferring or mixing their contents

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  • Hematology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

一方側の端部にシリンジを連結可能な薬液注入口部が形成されるとともに他方側の端部に薬液容器に連結可能な薬液排出口部が形成され、薬液注入口部から薬液排出口部に連なる通路を有する筒体と、該通路に設けられた除菌フィルタと、該除菌フィルタと薬液排出口部との間に、通路を閉鎖し、かつ薬液が薬液注入口部から通路に注入されると通路を開放し得るように設けられた閉鎖手段とを備えることを特徴とする薬液注入ポート、およびこれを備える薬液容器。A chemical solution inlet port that can be connected to a syringe is formed at one end portion, and a chemical solution discharge port portion that can be connected to a chemical solution container is formed at the other end portion, from the chemical solution inlet portion to the chemical solution outlet portion. A cylindrical body having a continuous passage, a sterilization filter provided in the passage, and a passage between the sterilization filter and the chemical solution outlet, and the chemical is injected into the passage from the chemical inlet. And a closing means provided so that the passage can be opened, and a drug solution container provided with the drug solution injection port.

Description

技術分野
本発明は、薬液同士の混注、具体的には輸液などの注射液への他の薬液の混注を無菌的にかつ簡易に行うための薬液注入ポート、および該薬液注入ポートを備える薬液容器に関する。
背景技術
臨床の場では、複数種の薬液を同時に患者に投与することが繁用されている。たとえばビタミン剤などを静脈に注射したい場合など、ビタミン剤は熱により変質してしまうため、輸液バッグなどの薬液容器内に収容し、予め高圧蒸気滅菌処理を施しておくことができない。このため、用事、他の薬液が予め収容された薬液容器内に注入混合(これを混注という)して薬液容器内で混合する必要がある。
上記の薬液を薬液容器に混注する場合、従来、薬液容器の薬液排出ポートのゴム栓に注射針を刺して混注する方法が採用されていたが、このような方法では、混注操作時の無菌性の確保が困難であった。該混注操作の際に外部から微生物(菌)が混入すると、この混合注射液を患者に投与している期間中に、該混合注射液中で微生物が繁殖してしまう。特に、該注射液がたとえば高カロリー輸液など栄養補給を目的とした輸液である場合、たとえ少量の混入であっても投与期間中に微生物が繁殖してしまう危険性がある。このような場合では、投与後期には大量の微生物が輸液と同時に患者の体内に注入される可能性がある。このような混合注射液を投与された患者は、敗血症やエンドトキシンショックなどの重篤な副作用を引き起こす。したがって患者の安全性を配慮して、混注操作時の無菌性を確保する必要がある。
無菌的に混注操作を行うための医療用容器として、特開平9−19480号公報が開示されている。この医療用容器は、プラスチック容器本体に液密に取付けられる筒状の口部材と、上記口部材の開口を液密に密封するゴム栓体と、上記ゴム栓体に刺針可能な刺針部と連通され、あるいは該刺針部と一体成形されるハウジングと、上記ハウジングによって支持された除菌フィルタと、上記刺針部、ハウジングおよび除菌フィルタを滅菌状態で収容し、上記口部材に取付けられる収容カバーとからなる混注口(薬液注入ポート)が設けられてなるものである。
しかしながらこのような医療用容器では、ゴム栓を刺通することによるコアリングが発生してしまい、容器内の薬液に異物が混入してしまう問題がある。また、刺針部を移動させてゴム栓体を刺針する構造であるため、薬液注入ポートが比較的大型になり、さらには部品の数が多いために高コストとなってしまう不具合がある。
本発明は、コアリングが発生することなく薬液を無菌的に注入可能であり、部品数が少なくて従来より小型で簡略化した構造の薬液注入ポート、およびこの薬液注入ポートを備える薬液容器を提供することをその目的とするものである。
発明の開示
本発明者らは、上記課題を解決するため鋭意研究を行った結果、本発明を完成するに至った。即ち、本発明は以下のとおりである。
〔1〕一方側の端部にシリンジを連結可能な薬液注入口部が形成されるとともに他方側の端部に薬液容器に連結可能な薬液排出口部が形成され、薬液注入口部から薬液排出口部に連なる通路を有する筒体と、
該通路に設けられた除菌フィルタと、
該除菌フィルタと薬液排出口部との間に、通路を閉鎖し、かつ薬液が薬液注入口部から通路に注入されると通路を開放し得るように設けられた閉鎖手段とを備えることを特徴とする薬液注入ポート。
〔2〕前記筒体は、通路へ向けて突出する環状の突出部を有し、前記閉鎖手段が、環状突出部の薬液排出口部側に溶着されたフィルムであることを特徴とする上記〔1〕に記載の薬液注入ポート。
〔3〕前記筒体は、薬液注入口部を有する第一筒状部材と、薬液排出口部および環状突出部を有する第二筒状部材とからなり、第一筒状部材と第二筒状部材とが除菌フィルタを挟持した状態で互いに嵌着されてなることを特徴とする上記〔1〕または〔2〕に記載の薬液注入ポート。
〔4〕薬液注入口部が、開封可能な遮蔽手段によって、使用前まで無菌的に遮蔽されてなることを特徴とする上記〔1〕〜〔3〕のいずれかに記載の薬液注入ポート。
〔5〕遮蔽手段が薬液注入口部に嵌め込まれたゴムキャップであって、
該ゴムキャップは、その天面に前記通路に連通する孔の開口を有し、かつ該孔がガスフィルタにて通気可能に塞がれてなるものである上記〔4〕に記載の薬液注入ポート。
〔6〕上記〔1〕〜〔5〕のいずれかに記載の薬液注入ポートを備える薬液注入ポート付き薬液容器。
発明の詳細な説明
以下、本発明を詳細に説明する。
図1は、本発明の好ましい一例の薬液注入ポート2を備える薬液容器1を一部切り欠いて示す正面図であり、図2は、図1の例の薬液注入ポート2を拡大して示す断面図である。なお、図2は、薬液注入ポート2の軸線を含む断面である。本発明の薬液注入ポート2は、筒体3と、除菌フィルタ4と、閉鎖手段5とを、基本的に備える。
筒体3は、略筒状、好ましくは円筒状の部材であって、一方側(以下、「軸線方向一方A1側」ということがある。)の端部にシリンジに連結可能な薬液注入口部6が形成され、かつ他方側(以下、「軸線方向他方A2側」ということがある。)の端部に薬液容器に連結可能な薬液排出口部7が形成される。また筒体3は、薬液注入口部6から薬液排出口部7に連なる通路9を有する。薬液注入口部6は、混注させたい薬液を収容したシリンジを連結し得る構造であればよく、図2に示す例では、通路9が、その途中(後述する透孔18)から前記軸線方向一方A1側に向かって徐々に径が拡がるような緩やかなテーパ状に形成され、ルアーチップ型シリンジのルアーチップ部を嵌め込んで連結できるように実現される。薬液排出口部7は、薬液容器に連結し得る構造であればよく、図2に示す例では、たとえば上記軸線方向他方A2側の端部で外方に拡がるように形成され、かつ薬液容器に溶着可能な材料にて形成されたフランジ部分8を有するように実現される。
除菌フィルタ4は、筒体3内において、上記通路9の途中に設けられる。このような除菌フィルタ4としては、特に限定されるものではないが、たとえばメンブランタイプ、スクリーンタイプ、デプスタイプ、アニソトロピックタイプなど、当分野において通常用いられている各タイプのフィルタを好適に用いることができる。中でも、メンブランタイプのフィルタを用いるのが特に好ましい。除菌フィルタ4がメンブランタイプで実現される場合、その孔径(目の粗さ)が、細菌の通過を阻止できる大きさである0.01μm〜1.0μmに選ばれるのが好ましく、0.01μm〜0.5μmに選ばれるのがより好ましい。また、除菌フィルタ4を形成する材料としては、酢酸セルロース、再生セルロース、セルロースエステル、ナイロン、ポリテトラフルオロエチレン、ポリスチレン、ポリカーボネート、アクリル系樹脂、ポリオレフィン、ポリビニリデンジフルオライド、ポリエーテルスルホンなどが挙げられるが、これに限定されるものではない。
閉鎖手段5は、前記除菌フィルタ4と前記薬液排出口部7との間で、通路9を閉鎖するように設けられる。このような閉鎖手段5は、薬液が薬液注入口部6から通路9に注入されると通路9を開放し得るように前記通路9を閉鎖するものであれば、特には限定はされない。このような閉鎖手段5は、後述するような筒体に溶着されたフィルムで実現されてもよいし、逆止弁で実現されてもよい。
上記のような構造を有する本発明の薬液注入ポート2は、図1に示すように薬液容器に装着したときに、薬液注入口部6から注入された薬液が閉鎖手段5に到達して初めて閉鎖手段5が開放されるので、少なくとも使用前(混注操作前)まで薬液容器内に収容される薬液が薬液注入ポート側に流出してしまうのを防止できる。また薬液注入ポート2は、閉鎖手段5にて通路9の閉鎖手段5よりも薬液注入口部6側の部分と、薬液容器の内部空間とを連通させることがないので、薬液注入ポート2を装着したままで使用前まで薬液容器内に収容される薬液を無菌的に保持できる。
混注操作時には、薬液容器内の薬液に混注させたい他の薬液(以下、「混注液」と呼ぶことがある。)を収容したシリンジ(図示せず)を薬液注入口部6に連結し、該薬液注入口部6から前記混注液を通路9に注入する。上記のように通路9の途中には、除菌フィルタ4が設けられているので、除菌フィルタ4を通過した後の混注液は除菌される。除菌された混注液は、除菌フィルタ4と薬液排出口部7との間に設けられた閉鎖手段5に到達し、閉鎖手段5を開放する。閉鎖手段5の開放後、混注液は、薬液排出口部7から排出されて薬液容器内に流入し、薬液容器内の薬液と混合する。このように本発明の薬液注入ポート2では、混注液を注入して初めて通路9と薬液容器の内部空間とが連通するような構成であるため、無菌的な混注操作を確実に行うことができる。したがって混注後の薬液容器1内の混合薬液を滅菌処理する必要がなく、該滅菌処理で変質してしまうようなものでも混注操作に供することができる。
本発明においては、上記のような無菌的な混注操作を行える薬液注入ポートを、従来のたとえば特開平9−19480号公報に開示されていたような、開口を液密に密封するゴム栓体および該ゴム栓体に刺針可能な刺針部を用いることなく実現できる。したがって、従来とは異なり、ゴム栓体を刺針することによるコアリングが発生してしまい、薬液容器内にゴム削片など異物が混入してしまうことがない。またゴム栓体および刺針部を備えるような薬液注入ポートと比較して、小型であり、かつ少ない部品点数で簡単な構造の薬液注入ポートを実現できるため、製造コストも格段に少なくすることができる。
このような本発明の薬液注入ポート2を用いて、薬液容器内の薬液に混注させる混注液としては、特に限定はないが、滅菌により変質してしまうようなものや、非常に不安定なもの、あるいは滅菌処理により配合変化を受け易いものなどが特に好ましいものとして例示される。
本発明においては、上記筒体3が通路9へ向けて突出する環状の突出部を有し、かつ前記閉鎖手段5が、環状突出部の薬液排出口部7側に溶着されたフィルムで実現されるのが好ましい。図2には、筒体3が、略筒状の周壁10と、該周壁10から通路9に向けて突出する環状突出部11を有しており、閉鎖手段5であるフィルムが、この環状突出部11の薬液排出口部7側に溶着、さらに具体的には環状突出部11の薬液排出口部7側に形成される環状リブ12に溶着されてなる例を示している。但し、該フィルムは、本発明の目的から、薬液が通路9を通過する際に薬液の重量によりフィルムが環状リブ12から容易に剥離するように弱く溶着されていなければならず、かつ薬液が閉鎖手段5に到達するまではその溶着が保持されている程度に環状リブ12に溶着されている必要がある。
上記のような構造では、薬液注入口部6から通路9に混注液を注入させると、薬液を注入することによる注入圧によって、閉鎖手段5であるフィルムが環状リブ12から剥離し、閉鎖手段5が開放される。図2に示す例では、フィルムが環状突出部11の薬液排出口部7側に設けられることから、薬液注入口部6側からの圧力に対しては容易に剥離し、薬液排出口部7側からの圧力に対しては容易に剥離し難いという利点を有する。これにより、たとえば使用前に薬液容器1を誤って押圧することで薬液排出口部7側からフィルムに圧力がかかってしまい、フィルムが剥離して閉鎖手段が不所望に開放されてしまうことがなく、使用前の薬液容器内の薬液の無菌状態を確実に保持することができる。
また本発明における筒体3は、図2に示すように前記薬液注入口部6を有する第一筒状部材13と、前記薬液排出口部7および環状突出部11を有する第二筒状部材14とからなり、この第一筒状部材13と第二筒状部材14とが除菌フィルタ4を挟持した状態で互いに嵌着されて実現されるのが好ましい。
筒体3をこのような構造とすることによって、第一筒状部材13と第二筒状部材14とを、除菌フィルタ4を挟み込みながら互いに嵌着させることで、通路9の途中に除菌フィルタ4が設けられた薬液注入ポートを容易に製造することができる。
図2に示す例において、第一筒状部材13は、上記薬液注入口部6以外に、支持部15、嵌着部16および周壁部17を有する。支持部15は、円板状の部分であって、同心円状の透孔18を有する。この支持部15の透孔18の周囲から軸線方向一方A1側に向かって同軸に立ち上がるようにして薬液注入口部6が形成される。図2に示す例の薬液注入口部6は、上記のように透孔18から軸線方向一方A1側に向かって徐々に径が拡がるような緩やかなテーパ状に形成される。薬液注入口部6の開口および支持部15における透孔18は、上述した通路9の一部を形成する。嵌着部16は、後述する第二筒状部材14の被嵌着部19と互いに嵌着し得るように形成される。該嵌着部16は、図2の例では、たとえば支持部15の軸線方向他方A2側で、言わばスカート状に中心軸に向かって段階的に深くなる凹状部分として形成されてなる。また周壁部17は、支持部15の外周において形成される円筒状の部分であって、この周壁部17が上述した筒体3の周壁10の一部を形成する。なお図2には、該薬液注入口部6が、支持部15から周壁部17と同程度の距離だけ軸線方向一方A1側に向かって立ち上がるようにして形成されてなる例を示している。
このような第一筒状部材13を形成する材料としては、たとえばポリエチレン、ポリプロピレン、ポリ塩化ビニル、ポリエステル、ポリカーボネートなどの耐薬品性を有する合成樹脂が挙げられる。
また図2に示す例において、第二筒状部材14は、上記薬液排出口部7および環状突出部11以外に、被嵌着部19および周壁部20を有する。被嵌着部19は、上記の第一筒状部材13の嵌着部16と互いに嵌着し得るように形成される。該被嵌着部19は、図2の例では、支持部15の軸線方向他方A2側で、上記嵌着部16の形状に対応した段階的な高さの凸状部分として形成されてなる。周壁部20は、略円筒状の部分であって、図2のように第一筒状部材13と第二筒状部材14とを嵌着させた状態で、第一筒状部材13の上記周壁部17と共に上述した筒体3の周壁10を形成する。上記環状突出部11は、この周壁部20から通路9へ向けて突出する。
このような第二筒状部材14を形成する材料としては、上記の第一筒状部材13と同様の、たとえばポリエチレン、ポリプロピレン、ポリ塩化ビニル、ポリエステル、ポリカーボネートなどの耐薬品性を有する合成樹脂が挙げられる。第一筒状部材13と第二筒状部材14とは、上記合成樹脂材料の中から選ばれるならば、同一の材料で形成されていてもよいし互いに異なる材料で形成されていてもよいが、同一の材料で形成されるのが好ましい。また後述するように薬液注入ポートを、溶着によって薬液容器に連結する場合には、溶着させる相手部材の形成材料に応じて、上述した樹脂材料の中から溶着可能なものを選択する。また第二筒状部材とフランジ部分とが別体で形成されてもよく、このような態様で溶着にて容器本体に連結するのであれば、少なくともフランジ部分が溶着可能な材料で形成されればよい。
図2の例では、上記のように閉鎖手段5が環状リブ12に溶着されたフィルムで実現される。このフィルムを形成する材料としては、耐薬品性を有し、かつ環状リブ12に溶着し得る材料であるならば特には限定されず、上述した第二筒状部材14の形成材料(環状リブ12の形成材料)に併せて適宜選択される。フィルム形成材料の例として、上述の第二筒状部材14の形成材料と、これに相溶性を有しない樹脂とのポリマーブレンドにて形成される場合が挙げられる。たとえば、第二筒状部材14がポリエチレンで形成される場合、閉鎖手段5となるフィルム形成材料としては、ポリエチレンとポリプロピレンとのポリマーブレンドが好ましく採用される。またさらにこの場合、フィルムにおけるポリエチレンとポリプロピレンとの混合比率は、3:7〜7:3が好ましい。
また環状リブ12およびフィルムが、共にポリエチレン、より好ましくは共に高密度ポリエチレンで形成されていてもよい。このような形成材料の組合せであっても、上記のような環状リブ12へのフィルムの溶着を実現できる。
上記フィルムの環状突出部11への溶着は、従来公知の溶着と同じく、加熱や超音波誘導あるいは高周波誘導による発熱にて行えばよい。但し、該フィルムは、上述のように薬液注入口部6からの薬液の注入によって剥離することを意図しているので、図2の例では、断面半円状の環状リブ12に溶着することで、換言すれば溶着の面積をできるだけ少なくすることで、上記の弱い溶着を実現している。また本発明においては、溶着する面積ではなく、溶着の際の条件を調整する、たとえば加熱温度を低めにする、あるいは加熱時間を短くすることによって、上記の弱い溶着を実現してもよい。
また本発明の薬液注入ポート2は、薬液注入口部6が、開封可能な遮蔽手段によって、使用前まで無菌的に遮蔽されてなるように実現されるのが好ましい。この遮蔽手段としては、薬液注入ポートを使用するまでの間、薬液注入口部6を無菌的に遮蔽できる、換言すれば薬液注入口部6を略気密に密封できるものであれば、特に限定はない。これによって、使用前の通路9の滅菌状態を保持できる。
図2には、遮蔽手段として、薬液注入口部6の開口を全面にわたって覆うように、前記筒体3に貼着される密封シール(図中、二点鎖線の部分22)を用いた場合を示している。該密封シール22は、滅菌紙、アルミフィルム、たとえばアルミニウム単独フィルム、プラスチックフィルム、アルミニウムと他のプラスチックとのラミネートフィルム、アルミ蒸着フィルムなどのフィルムで実現される。薬液注入ポート2にて薬液の混注を行いたい場合には、密封シール22を剥離してから用いる。
図2の例では、薬液注入口部6が支持部15から周壁部17と同程度の距離だけ軸線方向一方A1側に向かって立ち上がるようにして形成された態様であるので、該周壁部17の軸線方向一方側の端部分17aに密封シール22を貼着すれば、該密封シール22にて薬液注入口部6の開口を全面にわたって覆うことができる。このように第一筒状部材13に周壁部17が形成されることで、周壁部が形成されない場合と比較して、密封シール22の貼着および剥離がより容易となる利点がある。なお薬液注入口部は、支持部から周壁部よりも小さな距離だけ軸線方向一方側に向かって立ち上がるようにして形成されてもよく、このような態様によっても上記利点が得られる。
このような薬液注入ポート2は、図1に示すような薬液容器用の薬液注入ポートとして好適に使用できる。薬液容器は、医療用に利用可能であれば特に限定されるものではない。図1に示す例の薬液容器1は、薬液注入ポート2以外に、容器本体25および薬液排出ポート26を備える。
容器本体25は、柔軟な合成樹脂からなる2枚のシートを重ね合わせ、その周囲を溶着して形成された容器である。この容器の形成材料としては、ポリエチレン、ポリプロピレン、軟質ポリエステル、塩化ビニル、エチレン−酢酸ビニル共重合体等が挙げられるが、特に耐薬品性に優れた低密度ポリエチレン、直鎖状低密度ポリエチレン、ポリプロピレン等が好ましく採用される。そして、容器本体25の内部には、アミノ酸液、ブドウ糖液、電解質を含む溶液、生理食塩水等の液体が収容される。
尚、容器本体としては、図1に示す本例のように内部が1室だけのものに限定されず、隔壁により2室以上に区切られたもの等も採用できる。さらに、シートを重ね合わせた形状の他、チューブ状に成形されたもの等も採用できる。
薬液排出ポート26は、ポリエチレン、ポリプロピレン等の合成樹脂成形体からなる排出ポート部材27と、この排出ポート部材27と同様の材質で形成された接続部材28と、排出ポート部材27に支持されてその開口を液密に密封するゴム栓29から構成される。ゴム栓29と容器本体25の内部は接続部材28を介して連通しており、ゴム栓29に輸液セットの瓶針等が刺通され、内部に収容された薬液が人体へ投与されることとなる。
尚、ゴム栓29については、点滴時に薬液が漏出することのない材質であればよく、熱可塑性エラストマー等のゴム状弾性体も使用可能である。また、薬液排出ポートとしては、ゴム栓29等のゴム状弾性体に輸液セットの瓶針を刺通するような形状に限定されず、コネクターで接続されるような形状にしてもよい。
薬液注入ポート2は、前述の容器本体25内に薬液を無菌的に注入するためのポートで、シリンジに接続可能な薬液注入口部6を有する第一筒状部材と、閉鎖手段5を有する第二筒状部材との間に除菌フィルタ4が挟持され、さらに第二筒状部材が接続口30に固着されている。
図3は、本発明の好ましい他の例の薬液注入ポート46を簡略化して示す断面図である。なお上述した薬液注入ポート2と同様の構成を有する部分には、図2と同一の参照符を付し、説明を省略する。図3に示す態様の薬液注入ポート46は、薬液注入口部47がルアーロック型(ロックネジが設けられた)シリンジに対応する形状、たとえばメス型ルアーロック構造を有するような形状に形成される。これにより図2に示したテーパ状に形成された薬液注入口部6と比較して、より強固に安定してシリンジと連結できる薬液注入口部47を実現でき、安定して混注操作を行うことができる。
また本発明の薬液注入ポートは、滅菌方法によっては、上述した密封シール22に換えて、図3に示す例のようにゴムキャップ48を薬液注入口部47の開口に嵌め込むことによって、使用前の滅菌状態を保つ遮蔽手段としてもよい。なお図3の例では、図2の場合とは異なり、第一筒状部材51は周壁部を有さず、第二筒状部材14の周壁部20のみで筒体50の周壁10を形成するように実現される。このようなゴムキャップ48は、混注操作時には無論外すが、混注操作後にまた薬液注入口部47の開口に嵌め込み、混合薬液の逆流を防止させることもできる。
図3に示す薬液注入ポート46は、第一筒状部材51と第二筒状部材14の嵌着からゴムキャップ48の嵌め込みまで無菌空間で組み立てられてもよいが、通常は、ゴムキャップ48を薬液注入口部47の開口に嵌め込んだ後、γ線滅菌がなされて組み立てられる。
図4は、本発明の好ましいさらに他の例の薬液注入ポート56を簡略化して示す断面図である。なお上述した薬液注入ポート2と同様の構成を有する部分には、図2と同一の参照符を付し、説明を省略する。本発明の薬液注入ポート56は、遮蔽手段が、図4に示す例のようにその天面(ゴムキャップ57において、薬液注入口部47の開口に嵌め込まれる側とは反対側の面)57aに開口59を有する孔58が形成されたゴムキャップ(エラストマーキャップ)57を、薬液注入口部47の開口に嵌め込むことで実現されてもよい。
ゴムキャップ57を形成する材料としては、ゴム状弾性を有するものであれば特に限定されるものではなく、たとえばエラストマー、通常の天然ゴム、ブチルゴム、ポリスチレン系樹脂などが挙げられるが、後述のガスフィルタ60や防水シート61の溶着性を考慮すると、たとえばスチレン−エチレン−ブチレン−スチレンブロックコポリマー(SEBS)、スチレン−ブチレン−スチレンブロックコポリマー(SBS)、スチレン−イソプレン−スチレンブロックコポリマー(SIS)などのスチレン系の熱可塑性エラストマーや、エチレン−プロピレンブロックコポリマーなどのオレフィン系の熱可塑性エラストマーが好ましく採用できる。
該ゴムキャップ57における孔58は、上述のように該ゴムキャップ57の天面57aにおいて開口59を有し、図4に示すようにゴムキャップ57が上記薬液注入口部47の開口に嵌め込まれた状態で、薬液注入ポート56の通路9と外部空間とを連通するように形成される。該孔58の径は、薬液注入口部47の外径より小さければ特に限定はないが、通常、直径1mm〜5mmの径が採用される。
上記ゴムキャップ57に形成された孔58は、ガスフィルタ(除菌フィルタ)60によって、通気可能に塞がれる。図4には、たとえば、上記開口59を外側(天面57aの上側)から覆うようにして設けられたガスフィルタ60によって、孔58が通気可能に塞がれてなる例を示す。該ガスフィルタ60は、たとえばゴムキャップ57の天面57aに熱溶着されることによって設けられる。このガスフィルタ60としては、上述した除菌フィルタ4と同様の除菌性能を有するとともに、後述の高圧蒸気滅菌またはエチレンオキサイドガス滅菌(EOG滅菌)が可能な孔径(目の粗さ)を有するものであるのが好ましい。該ガスフィルタ60の孔径としては、たとえば、0.01μm〜1.0μm、より好ましくは0.01μm〜0.5μmが例示される。このようなガスフィルタ60の形成材料としては、特に限定はなく、たとえば通路9に設けられる除菌フィルタ4と同様の形成材料が挙げられる。また上記のようにガスフィルタ60を開口59を覆うようにして天面57aに熱溶着する場合には、たとえばポリテトラフルオロエチレン、ポリビニリデンフルオライド、テトラフルオロエチレン−ヘキサフルオロプロピレン共重合体などの熱溶着性の悪い材料に、たとえばポリエチレン、ポリプロピレンなどの熱溶着性のよい材料をラミネートしてなるフィルタを好ましく採用できる。
なお、ガスフィルタ60は、孔58の途中に設けられることによって、孔58を通気可能に塞ぐように実現されてもよい。
図4に示すゴムキャップ57によれば、ガスフィルタ60を通って気体が通過できるので、図3に示すゴムキャップ48を使用した場合に採用されていたγ線滅菌に限らず、高圧蒸気滅菌、EOG滅菌などの滅菌方法を採用することができる。
上記の薬液注入ポート56は、薬液充填された薬液容器の接続口30に固着された後、再び高圧蒸気滅菌されることになる。この高圧蒸気滅菌において、滅菌後乾燥工程を設けない場合には、通路9に水滴が残存してしまう。該薬液注入ポート56においては、これを防ぐべくガスフィルタ60の外側に、防水シート(図4において二点鎖線で囲む部分61)を熱溶着などの方法で貼り付けておくのが好ましい。該防水シート61としては、ポリエチレン、ポリプロピレンなどのプラスチックや、アルミニウムとプラスチックとのラミネートフィルムなどが採用される。
なお、図4に示す態様の薬液注入ポート56は、図2および図3に示した態様とは異なり、筒体62が、薬液注入口部47を有する第一筒状部材63と、薬液排出口部7および環状突出部11を有する第二筒状部材64と、フランジ部分8を有する第三筒状部材65とから構成され、第一筒状部材63と第二筒状部材64とが、除菌フィルタ4を挟持した状態で、第三筒状部材65を介して互いに嵌着されてなるような構成で実現される。図4に示す例の薬液注入ポート56では、第一筒状部材63および第二筒状部材64とが共に周壁部を有さず、第三筒状部材65の周壁部66のみで筒体62の周壁が形成される。
また、図1に示した例において、本発明の薬液容器の薬液排出ポート部材が、周壁とこれに嵌り込むゴム栓とを有するように形成され、このゴム栓に輸液セットの瓶針などを刺通して薬液容器内の薬液を排出する形態であったけれども、これに限定されることはなく、たとえば薬液排出ポート部材がコネクタで接続されるような形状であってもよい。
実施例
本発明をより詳細に説明するために、実施例を挙げるが、本発明はこれらにより何ら限定されるものではない。
実施例1
図3に示す態様の本発明の薬液注入ポート46を作製した。除菌フィルタ4としては、孔径が0.2μmのナイロン製のフィルタを用いた。第一筒状部材51および第二筒状部材14の形成材料としては、高密度ポリエチレンを用いた。閉鎖手段5としては、ポリエチレンとポリプロピレンとのポリマーブレンドのフィルムを用いた。
薬液注入口部47の開口には、スチレン系熱可塑性エラストマーであるSEBS(スチレン−エチレン・ブチレン−スチレンブロックコポリマー)製のゴムキャップを嵌め込んだ後、γ線滅菌を施した。
実施例2
図4に示す態様の本発明の薬液注入ポート56を作製した。通路9に設けられる除菌フィルタ4としては、孔径が0.2μmのポリビニリデンジフルオライド製のフィルタを用いた。薬液注入口部47の開口には、SEBS製であり、孔径が2mmの孔58を有するゴムキャップ57を嵌め込んだ。当該ゴムキャップ57の天面57aに、孔58の開口59を覆うようにして、孔径が0.2μmのポリテトラフルオロエチレンと高密度ポリエチレンとをラミネートしてなるガスフィルタ60を熱溶着した。第一筒状部材63、第二筒状部材64および第三筒状部材65の形成材料としては、いずれも高密度ポリエチレンを用いた。閉鎖手段5としては、ポリエチレンとポリプロピレンとのポリマーブレンドのフィルムを用いた。
ガスフィルタ60を熱溶着したゴムキャップ57を、エチレンオキサイドガスで滅菌した後、防水シート61としてポリエチレンシールを用いて、ガスフィルタ60を覆うようにして、天面57aに熱溶着して貼付した後、全体に高圧蒸気滅菌を施した。
産業上の利用可能性
以上の説明で明らかなように、本発明によれば、コアリングが発生することなく薬液を無菌的に注入可能であり、部品数が少なくて従来より小型で簡略化した構造の薬液注入ポート、およびこの薬液注入ポートを備える薬液容器を提供することができる。
本出願は日本で出願された特願2001−060438および特願2001−230530を基礎としており、その内容は本明細書に全て包含するものとする。
【図面の簡単な説明】
図1は、本発明の好ましい一例の薬液注入ポートを備える薬液容器を一部切り欠いて示す正面図である。
図2は、図1の例の薬液注入ポートを拡大して示す断面図である。
図3は、本発明の好ましい他の例の薬液注入ポートを簡略化して示す断面図である。
図4は、本発明の好ましいさらに他の例の薬液注入ポートを簡略化して示す断面図である。
Technical field
The present invention relates to a medicinal solution injection port for aseptically and simply performing mixed injection of medicinal solutions, specifically, mixed injection of another medicinal solution into an injection solution such as an infusion solution, and a medicinal solution container including the medicinal solution injection port.
Background art
In clinical settings, it is frequently used to administer a plurality of types of drug solutions to a patient at the same time. For example, when a vitamin preparation or the like is to be injected into a vein, the vitamin preparation is altered by heat, so it cannot be stored in a chemical container such as an infusion bag and subjected to high-pressure steam sterilization in advance. For this reason, it is necessary to inject and mix (this is referred to as mixed injection) into a chemical container in which other chemicals are stored in advance and to mix them in the chemical container.
In the case of mixing the above chemical solution into a chemical solution container, conventionally, a method in which an injection needle is inserted into the rubber stopper of the chemical solution discharge port of the chemical solution container has been adopted, but in such a method, sterility at the time of mixed injection operation is adopted. It was difficult to ensure. When microorganisms (bacteria) are mixed from the outside during the mixed injection operation, the microorganisms propagate in the mixed injection solution during the period in which the mixed injection solution is administered to the patient. In particular, when the injection solution is an infusion solution for nutritional supplementation such as a high calorie infusion solution, there is a risk that microorganisms will propagate during the administration period even if a small amount is mixed. In such a case, a large amount of microorganisms may be injected into the patient's body at the same time as the infusion in the later stage of administration. Patients who receive such mixed injections cause serious side effects such as sepsis and endotoxin shock. Therefore, in consideration of patient safety, it is necessary to ensure sterility during the mixed injection operation.
Japanese Patent Laid-Open No. 9-19480 is disclosed as a medical container for performing aseptic mixed injection operation. This medical container communicates with a cylindrical mouth member that is liquid-tightly attached to a plastic container body, a rubber stopper that liquid-tightly seals the opening of the mouth member, and a puncture needle portion that can be inserted into the rubber stopper. A housing integrally formed with the puncture needle part, a sterilization filter supported by the housing, a stab needle part, the housing and the sterilization filter which are stored in a sterilized state, and a storage cover attached to the mouth member A mixed injection port (chemical solution injection port) is provided.
However, in such a medical container, coring due to piercing with a rubber stopper occurs, and there is a problem that foreign substances are mixed into the chemical solution in the container. In addition, since the structure is such that the puncture portion is moved to puncture the rubber plug, the chemical injection port is relatively large, and the number of parts is high, resulting in high costs.
The present invention provides a chemical injection port that can be injected aseptically without generating coring, has a small number of parts, and has a smaller and simplified structure, and a chemical solution container including the chemical injection port. The purpose is to do.
Disclosure of the invention
As a result of intensive studies to solve the above problems, the present inventors have completed the present invention. That is, the present invention is as follows.
[1] A chemical liquid inlet that can be connected to a syringe is formed at one end, and a chemical outlet that can be connected to a chemical container is formed at the other end. A cylinder having a passage leading to the outlet,
A sterilization filter provided in the passage;
A closing means provided between the sterilization filter and the chemical solution discharge port portion, and a closing means provided so as to open the passage when the chemical solution is injected from the chemical solution injection port portion into the passage. Characteristic chemical injection port.
[2] The cylindrical body has an annular projecting portion projecting toward the passage, and the closing means is a film welded to the chemical liquid discharge port side of the annular projecting portion. 1] The chemical injection port according to 1).
[3] The cylindrical body includes a first cylindrical member having a chemical liquid inlet and a second cylindrical member having a chemical outlet and an annular protrusion, and the first cylindrical member and the second cylindrical member. The liquid injection port according to [1] or [2] above, wherein the member is fitted to each other with the sterilization filter interposed therebetween.
[4] The chemical solution injection port according to any one of [1] to [3], wherein the chemical solution injection port is aseptically shielded before use by an openable shielding means.
[5] A rubber cap in which the shielding means is fitted into the chemical solution inlet,
The rubber cap has an opening in a hole communicating with the passage on the top surface, and the hole is closed so as to be ventilated by a gas filter. .
[6] A chemical solution container with a chemical solution injection port comprising the chemical solution injection port according to any one of [1] to [5].
Detailed Description of the Invention
Hereinafter, the present invention will be described in detail.
FIG. 1 is a front view showing a part of a chemical liquid container 1 having a chemical liquid injection port 2 of a preferred example of the present invention. FIG. 2 is an enlarged cross-sectional view of the chemical liquid injection port 2 of the example of FIG. FIG. FIG. 2 is a cross section including the axis of the chemical liquid injection port 2. The chemical solution injection port 2 of the present invention basically includes a cylinder 3, a sterilization filter 4, and a closing means 5.
The cylindrical body 3 is a substantially cylindrical member, preferably a cylindrical member, and a chemical liquid injection port portion that can be connected to a syringe at one end (hereinafter, also referred to as “one axial direction A1 side”). 6 is formed, and a chemical solution discharge port portion 7 that can be connected to the chemical solution container is formed at the end of the other side (hereinafter also referred to as “the other axial direction A2 side”). Further, the cylindrical body 3 has a passage 9 that extends from the chemical liquid inlet 6 to the chemical outlet 7. The chemical solution injection port 6 may have any structure that can connect a syringe containing a chemical solution to be mixed, and in the example shown in FIG. 2, the passage 9 extends in the axial direction from the middle (through hole 18 described later). It is formed in a gentle taper shape whose diameter gradually increases toward the A1 side, and is realized so that the luer tip portion of the luer tip type syringe can be fitted and connected. The chemical solution discharge port portion 7 only needs to have a structure that can be connected to the chemical solution container. In the example shown in FIG. 2, for example, the chemical solution discharge port portion 7 is formed so as to expand outward at the end portion on the other side A2 in the axial direction. It is realized to have a flange portion 8 formed of a weldable material.
The sterilization filter 4 is provided in the middle of the passage 9 in the cylindrical body 3. Such a sterilization filter 4 is not particularly limited, but for example, various types of filters that are usually used in the field such as a membrane type, a screen type, a depth type, and an anisotropic type are preferably used. be able to. Among these, it is particularly preferable to use a membrane type filter. When the sterilization filter 4 is realized as a membrane type, the pore diameter (roughness of the eyes) is preferably selected from 0.01 μm to 1.0 μm, which is a size that can prevent passage of bacteria, and 0.01 μm More preferably, it is selected to be -0.5 m. Examples of the material for forming the sterilizing filter 4 include cellulose acetate, regenerated cellulose, cellulose ester, nylon, polytetrafluoroethylene, polystyrene, polycarbonate, acrylic resin, polyolefin, polyvinylidene difluoride, and polyethersulfone. Although it is mentioned, it is not limited to this.
The closing means 5 is provided so as to close the passage 9 between the sterilization filter 4 and the chemical solution outlet 7. The closing means 5 is not particularly limited as long as it closes the passage 9 so that the passage 9 can be opened when the chemical liquid is injected into the passage 9 from the chemical liquid inlet 6. Such closing means 5 may be realized by a film welded to a cylinder as described later, or may be realized by a check valve.
The chemical injection port 2 of the present invention having the above-described structure is closed only when the chemical injected from the chemical injection port 6 reaches the closing means 5 when mounted on the chemical container as shown in FIG. Since the means 5 is opened, it is possible to prevent the chemical liquid stored in the chemical liquid container from flowing out to the chemical liquid injection port side at least before use (before the mixed injection operation). In addition, since the chemical solution injection port 2 does not connect the portion of the passage 9 closer to the chemical solution injection port 6 than the closing device 5 of the passage 9 and the internal space of the chemical solution container, the chemical solution injection port 2 is attached. As it is, it is possible to aseptically hold the chemical solution stored in the chemical solution container before use.
At the time of the mixed injection operation, a syringe (not shown) containing another chemical solution (hereinafter sometimes referred to as “mixed injection solution”) to be mixed and injected into the chemical solution in the chemical solution container is connected to the chemical solution inlet 6, The mixed injection liquid is injected into the passage 9 from the chemical liquid inlet 6. Since the sterilization filter 4 is provided in the middle of the passage 9 as described above, the mixed liquid after passing through the sterilization filter 4 is sterilized. The sterilized mixed injection solution reaches the closing means 5 provided between the sterilizing filter 4 and the chemical solution discharge port 7 and opens the closing means 5. After the closing means 5 is opened, the mixed injection liquid is discharged from the chemical liquid discharge port 7 and flows into the chemical liquid container to be mixed with the chemical liquid in the chemical liquid container. Thus, since the chemical | medical solution injection port 2 of this invention is the structure which the channel | path 9 and the internal space of a chemical | medical solution container communicate only after inject | pouring mixed injection liquid, aseptic mixing injection operation can be performed reliably. . Therefore, it is not necessary to sterilize the mixed chemical solution in the chemical solution container 1 after mixed injection, and even those that are altered by the sterilization process can be used for the mixed injection operation.
In the present invention, a chemical liquid injection port capable of performing aseptic mixed injection operation as described above is a rubber plug body for sealing an opening liquid-tightly as disclosed in, for example, JP-A-9-19480. This can be realized without using a piercing portion that can be pierced with the rubber plug. Therefore, unlike the conventional case, coring due to puncture of the rubber stopper is generated, and foreign substances such as rubber scraps are not mixed in the chemical solution container. In addition, compared with a chemical solution injection port having a rubber plug and a puncture needle, a chemical solution injection port that is small and has a simple structure with a small number of parts can be realized, so that the manufacturing cost can be significantly reduced. .
There is no particular limitation on the co-injection liquid to be co-injected into the chemical solution in the chemical solution container using the chemical solution injection port 2 of the present invention, but it may be altered by sterilization or very unstable. Alternatively, those that are susceptible to change in formulation due to sterilization are particularly preferred.
In the present invention, the cylindrical body 3 has an annular projecting portion projecting toward the passage 9, and the closing means 5 is realized by a film welded to the side of the chemical ejecting port 7 of the annular projecting portion. It is preferable. In FIG. 2, the cylindrical body 3 has a substantially cylindrical peripheral wall 10 and an annular projecting portion 11 projecting from the peripheral wall 10 toward the passage 9, and the film as the closing means 5 is the annular projecting portion. An example is shown in which welding is performed on the side of the chemical solution discharge port 7 of the portion 11, more specifically, an annular rib 12 formed on the side of the chemical discharge port 7 of the annular protrusion 11. However, for the purpose of the present invention, the film must be weakly welded so that the film easily peels off the annular rib 12 due to the weight of the chemical when the chemical passes through the passage 9 and the chemical is closed. Until reaching the means 5, it is necessary to be welded to the annular rib 12 to such an extent that the welding is maintained.
In the structure as described above, when the mixed injection liquid is injected into the passage 9 from the chemical liquid inlet 6, the film as the closing means 5 is peeled off from the annular rib 12 by the injection pressure generated by injecting the chemical liquid, and the closing means 5. Is released. In the example shown in FIG. 2, since the film is provided on the chemical liquid discharge port 7 side of the annular protrusion 11, the film easily peels off against the pressure from the chemical liquid injection port 6 side, and the chemical liquid discharge port 7 side. It has the advantage that it is difficult to peel off easily against the pressure from. Thereby, for example, pressure is applied to the film from the side of the chemical solution outlet 7 by pressing the chemical solution container 1 before use, so that the film is not peeled off and the closing means is not undesirably opened. The aseptic condition of the chemical solution in the chemical solution container before use can be reliably maintained.
Further, as shown in FIG. 2, the cylindrical body 3 in the present invention includes a first cylindrical member 13 having the chemical liquid inlet 6, and a second cylindrical member 14 having the chemical outlet 7 and the annular protrusion 11. It is preferable that the first cylindrical member 13 and the second cylindrical member 14 be fitted to each other with the sterilization filter 4 sandwiched therebetween.
By making the cylindrical body 3 have such a structure, the first cylindrical member 13 and the second cylindrical member 14 are fitted to each other while sandwiching the sterilization filter 4, thereby sterilizing in the middle of the passage 9. The chemical injection port provided with the filter 4 can be easily manufactured.
In the example shown in FIG. 2, the first tubular member 13 includes a support portion 15, a fitting portion 16, and a peripheral wall portion 17 in addition to the chemical liquid inlet portion 6. The support portion 15 is a disc-shaped portion, and has concentric through holes 18. The chemical solution injection port 6 is formed so as to rise coaxially from the periphery of the through hole 18 of the support portion 15 toward the one side A1 in the axial direction. The drug solution inlet 6 in the example shown in FIG. 2 is formed in a gently tapered shape whose diameter gradually increases from the through hole 18 toward the one axial direction A1 as described above. The opening of the chemical solution inlet 6 and the through hole 18 in the support 15 form part of the passage 9 described above. The fitting portion 16 is formed so as to be fitted to a fitting portion 19 of the second cylindrical member 14 described later. In the example of FIG. 2, the fitting portion 16 is formed, for example, as a concave portion that gradually increases in depth toward the central axis in a skirt shape on the other side A <b> 2 in the axial direction of the support portion 15. The peripheral wall portion 17 is a cylindrical portion formed on the outer periphery of the support portion 15, and the peripheral wall portion 17 forms a part of the peripheral wall 10 of the cylindrical body 3 described above. FIG. 2 shows an example in which the chemical solution injection port 6 is formed so as to rise from the support portion 15 toward the one side A <b> 1 in the axial direction by the same distance as the peripheral wall portion 17.
Examples of the material forming the first cylindrical member 13 include synthetic resins having chemical resistance such as polyethylene, polypropylene, polyvinyl chloride, polyester, and polycarbonate.
In addition, in the example shown in FIG. 2, the second cylindrical member 14 includes a fitting portion 19 and a peripheral wall portion 20 in addition to the chemical solution discharge port portion 7 and the annular projecting portion 11. The fitting part 19 is formed so as to be fitted to the fitting part 16 of the first cylindrical member 13. In the example of FIG. 2, the fitting portion 19 is formed as a convex portion having a stepped height corresponding to the shape of the fitting portion 16 on the other side A <b> 2 in the axial direction of the support portion 15. The peripheral wall portion 20 is a substantially cylindrical portion, and the peripheral wall portion of the first cylindrical member 13 is fitted in the state where the first cylindrical member 13 and the second cylindrical member 14 are fitted as shown in FIG. The peripheral wall 10 of the cylindrical body 3 described above is formed together with the portion 17. The annular projecting portion 11 projects from the peripheral wall portion 20 toward the passage 9.
As a material for forming the second cylindrical member 14, a synthetic resin having chemical resistance such as polyethylene, polypropylene, polyvinyl chloride, polyester, polycarbonate, and the like, similar to the first cylindrical member 13 described above, is used. Can be mentioned. If the 1st cylindrical member 13 and the 2nd cylindrical member 14 are chosen from the said synthetic resin materials, they may be formed with the same material, but may be formed with a mutually different material, Are preferably formed of the same material. As will be described later, when the chemical solution injection port is connected to the chemical solution container by welding, a material that can be welded is selected from the above-described resin materials according to the forming material of the mating member to be welded. Further, the second cylindrical member and the flange portion may be formed separately, and if it is connected to the container body by welding in such a manner, at least the flange portion should be formed of a weldable material. Good.
In the example of FIG. 2, the closing means 5 is realized by a film welded to the annular rib 12 as described above. The material for forming this film is not particularly limited as long as it has chemical resistance and can be welded to the annular rib 12. The material for forming the above-described second tubular member 14 (annular rib 12). The material is suitably selected. As an example of the film forming material, there is a case where it is formed by a polymer blend of the above-described forming material of the second cylindrical member 14 and a resin having no compatibility therewith. For example, when the second cylindrical member 14 is formed of polyethylene, a polymer blend of polyethylene and polypropylene is preferably employed as the film forming material that serves as the closing means 5. In this case, the mixing ratio of polyethylene and polypropylene in the film is preferably from 3: 7 to 7: 3.
Further, the annular rib 12 and the film may be formed of polyethylene, more preferably both of high-density polyethylene. Even with such a combination of forming materials, the film can be welded to the annular rib 12 as described above.
The film may be welded to the annular protrusion 11 by heating, heat generation by ultrasonic induction, or high-frequency induction, as in the case of conventionally known welding. However, since the film is intended to be peeled off by injection of the chemical liquid from the chemical liquid inlet 6 as described above, in the example of FIG. 2, the film is welded to the annular rib 12 having a semicircular cross section. In other words, the weak welding described above is realized by minimizing the area of welding. In the present invention, the weak welding may be realized by adjusting not the area to be welded but the conditions at the time of welding, for example, by lowering the heating temperature or shortening the heating time.
Moreover, it is preferable to implement | achieve the chemical | medical solution injection | pouring port 2 of this invention so that the chemical | medical solution injection | pouring port part 6 may be shielded aseptically before use by the shielding means which can be opened. The shielding means is not particularly limited as long as it can aseptically shield the chemical liquid injection port 6 until the chemical liquid injection port is used, in other words, can seal the chemical liquid injection port 6 almost airtightly. Absent. Thereby, the sterilized state of the passage 9 before use can be maintained.
FIG. 2 shows a case where a hermetic seal (indicated by a two-dot chain line portion 22 in FIG. 2) is used as a shielding means so as to cover the entire opening of the chemical solution injection port 6 over the entire surface. Show. The hermetic seal 22 is realized by a film such as sterilized paper, an aluminum film, for example, an aluminum alone film, a plastic film, a laminated film of aluminum and other plastics, or an aluminum vapor deposited film. When it is desired to perform the mixed injection of the chemical solution at the chemical solution injection port 2, it is used after the sealing seal 22 is peeled off.
In the example of FIG. 2, the chemical solution injection port 6 is formed so as to rise from the support portion 15 toward the one side A <b> 1 in the axial direction by the same distance as the peripheral wall portion 17. If the sealing seal 22 is attached to the end portion 17a on the one side in the axial direction, the opening of the chemical solution inlet 6 can be covered with the sealing seal 22 over the entire surface. By forming the peripheral wall portion 17 on the first tubular member 13 in this manner, there is an advantage that the sticking and peeling of the sealing seal 22 are easier than in the case where the peripheral wall portion is not formed. The chemical solution injection port may be formed so as to rise from the support portion toward one side in the axial direction by a distance smaller than that of the peripheral wall portion, and the above-described advantages can be obtained by such a mode.
Such a chemical liquid injection port 2 can be suitably used as a chemical liquid injection port for a chemical liquid container as shown in FIG. The chemical solution container is not particularly limited as long as it can be used for medical purposes. The chemical liquid container 1 in the example shown in FIG. 1 includes a container main body 25 and a chemical liquid discharge port 26 in addition to the chemical liquid injection port 2.
The container body 25 is a container formed by overlapping two sheets made of a flexible synthetic resin and welding the periphery thereof. Examples of the material for forming the container include polyethylene, polypropylene, soft polyester, vinyl chloride, and ethylene-vinyl acetate copolymer. Particularly, low-density polyethylene, linear low-density polyethylene, and polypropylene having excellent chemical resistance. Etc. are preferably employed. The container body 25 contains a liquid such as an amino acid solution, a glucose solution, a solution containing an electrolyte, and physiological saline.
In addition, as a container main body, the inside is not limited to a thing with only one chamber like this example shown in FIG. 1, The thing divided | segmented into two or more rooms by the partition can be employ | adopted. Furthermore, in addition to the shape in which the sheets are stacked, those formed into a tube shape can be employed.
The chemical solution discharge port 26 is supported by a discharge port member 27 made of a synthetic resin molded body such as polyethylene and polypropylene, a connection member 28 formed of the same material as the discharge port member 27, and the discharge port member 27. It is comprised from the rubber stopper 29 which seals opening liquid-tightly. The rubber stopper 29 and the inside of the container body 25 communicate with each other via a connecting member 28, and a bottle needle or the like of an infusion set is pierced through the rubber stopper 29, and the medical solution stored inside is administered to the human body. Become.
The rubber plug 29 may be made of any material that does not allow chemicals to leak during infusion, and a rubber-like elastic body such as a thermoplastic elastomer can also be used. Further, the drug solution discharge port is not limited to a shape in which the bottle needle of the infusion set is pierced through a rubber-like elastic body such as the rubber plug 29, but may be a shape to be connected by a connector.
The medicinal solution injection port 2 is a port for aseptically injecting the medicinal solution into the container body 25 described above. The medicinal solution injection port 2 includes a first cylindrical member having a medicinal solution injection port 6 connectable to a syringe and a closing means 5. The sterilization filter 4 is sandwiched between the two cylindrical members, and the second cylindrical member is fixed to the connection port 30.
FIG. 3 is a cross-sectional view schematically showing a chemical liquid injection port 46 according to another preferred embodiment of the present invention. Parts having the same configuration as the above-described chemical liquid injection port 2 are denoted by the same reference numerals as those in FIG. 3 has a shape corresponding to a luer lock type (provided with a lock screw) syringe, for example, a shape having a female type luer lock structure. This makes it possible to realize a chemical solution injection port portion 47 that can be connected to the syringe more firmly and stably compared to the tapered chemical solution injection port portion 6 shown in FIG. Can do.
Further, depending on the sterilization method, the chemical liquid injection port of the present invention may be replaced with the above-described sealing seal 22 by inserting a rubber cap 48 into the opening of the chemical liquid injection port 47 as shown in FIG. It may be a shielding means for maintaining the sterilized state. In the example of FIG. 3, unlike the case of FIG. 2, the first cylindrical member 51 does not have a peripheral wall portion, and the peripheral wall 10 of the cylindrical body 50 is formed only by the peripheral wall portion 20 of the second cylindrical member 14. To be realized. Such a rubber cap 48 is, of course, removed during the mixed injection operation, but can also be fitted into the opening of the chemical liquid injection port 47 after the mixed injection operation to prevent the backflow of the mixed chemical liquid.
The chemical solution injection port 46 shown in FIG. 3 may be assembled in an aseptic space from the fitting of the first cylindrical member 51 and the second cylindrical member 14 to the fitting of the rubber cap 48. After fitting into the opening of the chemical solution inlet 47, γ-ray sterilization is performed and assembled.
FIG. 4 is a cross-sectional view schematically showing a chemical liquid injection port 56 of still another preferred example of the present invention. Parts having the same configuration as the above-described chemical liquid injection port 2 are denoted by the same reference numerals as those in FIG. As for the chemical | medical solution injection | pouring port 56 of this invention, a shielding means is the top | upper surface (surface opposite to the side fitted in the opening of the chemical | medical solution injection port part 47 in the rubber cap 57) 57a like the example shown in FIG. This may be realized by fitting a rubber cap (elastomer cap) 57 in which a hole 58 having an opening 59 is formed into the opening of the chemical liquid inlet 47.
The material for forming the rubber cap 57 is not particularly limited as long as it has rubber-like elasticity, and examples thereof include elastomers, ordinary natural rubber, butyl rubber, and polystyrene resins. 60 and the waterproof sheet 61, for example, styrene such as styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-butylene-styrene block copolymer (SBS), and styrene-isoprene-styrene block copolymer (SIS). An olefin-based thermoplastic elastomer such as an ethylene-based thermoplastic elastomer or an ethylene-propylene block copolymer can be preferably used.
The hole 58 in the rubber cap 57 has the opening 59 on the top surface 57a of the rubber cap 57 as described above, and the rubber cap 57 is fitted into the opening of the chemical liquid inlet 47 as shown in FIG. In this state, the passage 9 of the chemical liquid injection port 56 is formed to communicate with the external space. The diameter of the hole 58 is not particularly limited as long as it is smaller than the outer diameter of the chemical solution inlet 47, but a diameter of 1 mm to 5 mm is usually adopted.
The hole 58 formed in the rubber cap 57 is closed by a gas filter (sanitizing filter) 60 so as to allow ventilation. FIG. 4 shows an example in which, for example, the hole 58 is closed so as to allow ventilation by the gas filter 60 provided so as to cover the opening 59 from the outside (upper side of the top surface 57a). The gas filter 60 is provided, for example, by being thermally welded to the top surface 57a of the rubber cap 57. The gas filter 60 has the same sterilization performance as the sterilization filter 4 described above, and has a pore size (mesh roughness) that enables high-pressure steam sterilization or ethylene oxide gas sterilization (EOG sterilization) described later. Is preferred. Examples of the hole diameter of the gas filter 60 include 0.01 μm to 1.0 μm, and more preferably 0.01 μm to 0.5 μm. There is no limitation in particular as a forming material of such a gas filter 60, For example, the forming material similar to the bacteria elimination filter 4 provided in the channel | path 9 is mentioned. When the gas filter 60 is thermally welded to the top surface 57a so as to cover the opening 59 as described above, for example, polytetrafluoroethylene, polyvinylidene fluoride, tetrafluoroethylene-hexafluoropropylene copolymer, etc. A filter obtained by laminating a material having a good heat-weldability such as polyethylene or polypropylene on a material having a poor heat-weldability can be preferably used.
Note that the gas filter 60 may be provided in the middle of the hole 58 so as to block the hole 58 so as to allow ventilation.
According to the rubber cap 57 shown in FIG. 4, since gas can pass through the gas filter 60, not only the γ-ray sterilization employed when the rubber cap 48 shown in FIG. Sterilization methods such as EOG sterilization can be employed.
The chemical solution injection port 56 is fixed to the connection port 30 of the chemical solution container filled with the chemical solution and then sterilized by high-pressure steam again. In this high-pressure steam sterilization, when no post-sterilization drying step is provided, water droplets remain in the passage 9. In the chemical liquid injection port 56, it is preferable to attach a waterproof sheet (portion 61 surrounded by a two-dot chain line in FIG. 4) to the outside of the gas filter 60 by a method such as heat welding in order to prevent this. As the waterproof sheet 61, a plastic such as polyethylene or polypropylene, or a laminate film of aluminum and plastic is used.
4 differs from the embodiment shown in FIGS. 2 and 3 in that the cylindrical body 62 includes a first cylindrical member 63 having a chemical liquid inlet 47 and a chemical outlet. The second cylindrical member 64 having the portion 7 and the annular protruding portion 11 and the third cylindrical member 65 having the flange portion 8, and the first cylindrical member 63 and the second cylindrical member 64 are excluded. This is realized by a configuration in which the bacteria filter 4 is sandwiched and fitted to each other via the third cylindrical member 65. In the chemical liquid injection port 56 of the example shown in FIG. 4, the first cylindrical member 63 and the second cylindrical member 64 do not have a peripheral wall portion, and the cylindrical body 62 is formed only by the peripheral wall portion 66 of the third cylindrical member 65. A peripheral wall is formed.
Further, in the example shown in FIG. 1, the chemical solution discharge port member of the chemical solution container of the present invention is formed to have a peripheral wall and a rubber stopper fitted therein, and a bottle needle or the like of an infusion set is inserted into the rubber stopper. However, the present invention is not limited to this. For example, the chemical solution discharge port member may be connected by a connector.
Example
In order to describe the present invention in more detail, examples will be given, but the present invention is not limited to these examples.
Example 1
The chemical solution injection port 46 of the present invention of the embodiment shown in FIG. 3 was produced. As the sterilization filter 4, a nylon filter having a pore diameter of 0.2 μm was used. As a forming material of the first cylindrical member 51 and the second cylindrical member 14, high density polyethylene was used. As the closing means 5, a film of a polymer blend of polyethylene and polypropylene was used.
A rubber cap made of SEBS (styrene-ethylene-butylene-styrene block copolymer), which is a styrene-based thermoplastic elastomer, was fitted into the opening of the chemical solution inlet 47, and then γ-ray sterilization was performed.
Example 2
The chemical injection port 56 of the present invention having the form shown in FIG. 4 was produced. As the sterilization filter 4 provided in the passage 9, a filter made of polyvinylidene difluoride having a pore diameter of 0.2 μm was used. A rubber cap 57 having a hole 58 made of SEBS and having a hole diameter of 2 mm was fitted into the opening of the chemical solution inlet 47. A gas filter 60 made by laminating polytetrafluoroethylene having a hole diameter of 0.2 μm and high-density polyethylene was thermally welded to the top surface 57a of the rubber cap 57 so as to cover the opening 59 of the hole 58. As the material for forming the first cylindrical member 63, the second cylindrical member 64, and the third cylindrical member 65, high density polyethylene was used. As the closing means 5, a film of a polymer blend of polyethylene and polypropylene was used.
After the rubber cap 57 to which the gas filter 60 has been thermally welded is sterilized with ethylene oxide gas, a polyethylene seal is used as the waterproof sheet 61 and the gas filter 60 is covered so as to cover the gas filter 60 and then adhered to the top surface 57a. The whole was subjected to high-pressure steam sterilization.
Industrial applicability
As is clear from the above description, according to the present invention, the chemical liquid injection port can be injected aseptically without causing coring, and has a smaller and simpler structure than the conventional liquid injection port. And a chemical | medical solution container provided with this chemical | medical solution injection | pouring port can be provided.
This application is based on patent application Nos. 2001-060438 and 2001-230530 filed in Japan, the contents of which are incorporated in full herein.
[Brief description of the drawings]
FIG. 1 is a front view of a chemical liquid container provided with a chemical liquid injection port according to a preferred example of the present invention, with a part cut away.
2 is an enlarged cross-sectional view of the chemical liquid injection port of the example of FIG.
FIG. 3 is a cross-sectional view schematically showing a chemical liquid injection port according to another preferred embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a simplified chemical solution injection port according to still another example of the present invention.

Claims (6)

一方側の端部にシリンジを連結可能な薬液注入口部が形成されるとともに他方側の端部に薬液容器に連結可能な薬液排出口部が形成され、薬液注入口部から薬液排出口部に連なる通路を有する筒体と、
該通路に設けられた除菌フィルタと、
該除菌フィルタと薬液排出口部との間に、通路を閉鎖し、かつ薬液が薬液注入口部から通路に注入されると通路を開放し得るように設けられた閉鎖手段とを備えることを特徴とする薬液注入ポート。
A chemical solution injection port that can be connected to a syringe is formed at one end, and a chemical discharge port that can be connected to a chemical solution container is formed at the other end. A cylinder having a continuous passage;
A sterilization filter provided in the passage;
A closing means provided between the sterilization filter and the chemical solution discharge port portion, and a closing means provided so as to open the passage when the chemical solution is injected from the chemical solution injection port portion into the passage. Characteristic chemical injection port.
前記筒体は、通路へ向けて突出する環状の突出部を有し、前記閉鎖手段が、環状突出部の薬液排出口部側に溶着されたフィルムであることを特徴とする請求の範囲第1項に記載の薬液注入ポート。The cylindrical body has an annular projecting portion projecting toward the passage, and the closing means is a film welded to the chemical solution discharge port side of the annular projecting portion. The chemical solution injection port according to Item. 前記筒体は、薬液注入口部を有する第一筒状部材と、薬液排出口部および環状突出部を有する第二筒状部材とからなり、第一筒状部材と第二筒状部材とが除菌フィルタを挟持した状態で互いに嵌着されてなることを特徴とする請求の範囲第1項または第2項に記載の薬液注入ポート。The cylindrical body includes a first cylindrical member having a chemical liquid inlet and a second cylindrical member having a chemical outlet and an annular protrusion, and the first cylindrical member and the second cylindrical member are The chemical solution injection port according to claim 1 or 2, wherein the chemical solution injection ports are fitted to each other with the sterilization filter sandwiched therebetween. 薬液注入口部が、開封可能な遮蔽手段によって、使用前まで無菌的に遮蔽されてなることを特徴とする請求の範囲第1項〜第3項のいずれかに記載の薬液注入ポート。The medicinal solution injection port according to any one of claims 1 to 3, wherein the medicinal solution injection port portion is aseptically shielded by an openable shielding means before use. 遮蔽手段が薬液注入口部に嵌め込まれたゴムキャップであって、
該ゴムキャップは、その天面に前記通路に連通する孔の開口を有し、かつ該孔がガスフィルタにて通気可能に塞がれてなるものである請求の範囲第4項に記載の薬液注入ポート。
The shielding means is a rubber cap fitted into the chemical solution inlet,
The chemical solution according to claim 4, wherein the rubber cap has an opening of a hole communicating with the passage on a top surface thereof, and the hole is closed so as to be ventilated by a gas filter. Injection port.
請求の範囲第1項〜第5項のいずれかに記載の薬液注入ポートを備える薬液注入ポート付き薬液容器。A chemical solution container with a chemical solution injection port comprising the chemical solution injection port according to any one of claims 1 to 5.
JP2002571133A 2001-03-05 2002-03-05 Chemical liquid injection port and chemical liquid container including the same Expired - Lifetime JP4408338B2 (en)

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