JP4426162B2

JP4426162B2 - Mouth member and chemical liquid container including the same

Info

Publication number: JP4426162B2
Application number: JP2002270477A
Authority: JP
Inventors: 勇立石; 康史森本
Original assignee: Otsuka Pharmaceutical Co Ltd
Current assignee: Otsuka Pharmaceutical Co Ltd
Priority date: 2002-09-17
Filing date: 2002-09-17
Publication date: 2010-03-03
Anticipated expiration: 2022-09-17
Also published as: JP2004105372A

Description

【０００１】
【発明の属する技術分野】
本発明は、中空針等の穿刺部材を栓体に刺し通す際の液漏れを防止するための口部材と、それを備える薬液容器とに関する。
【０００２】
【従来の技術】
点滴や静脈注射等に用いられる輸液バッグ、輸液ボトル等の薬液容器は、一般に、ゴム、エラストマー等の弾性体からなる栓体によりも封止されてなる注入／排出部を備えている。かかる薬液容器の内容液を排出したり、他の薬液を注入したりする際には、中空針等の穿刺部材を上記栓体に刺し通す操作がなされる。
しかしながら、上記の栓体に穿刺部材を刺し通したときには、まれに栓体のコアリングによって穿刺部材に目詰まりが生じたり、栓体の切り屑が容器内に入りこんだりするおそれがある。そこで、例えば、穿刺可能なシートや薄膜によって封止された口部を備える薬液容器が提案されている（特許文献１参照）。
【０００３】
ところで、医療用中空針等の一般的な穿刺部材は、例えば図１０(a),(b) に示すように、その先端部分８６を鋭くするために軸方向に対して斜めに切り欠いたものが一般的である。このような穿刺部材８５は、先端の切欠面８７の広い範囲にわたって開口部８８が現れることとなる。
従って、図９に示すような穿刺部材導入部８２と薄膜８３とを備える口部材８０に、上記の穿刺部材８５をゆっくりと刺し通すと、穿刺部材８５が完全に刺し通された状態（図１０(b) ）に至るまでに、口部材８０の外部と内部とが穿刺部材８５の中空部８８を介して連通した状態（図１０(a) 中に矢印を付した線で示す。）である程度の時間が経過することとなり、穿刺部材８５先端の開口部８７から液が漏れ出すという問題を招いてしまう。特に、薬液容器は、実際の医療現場においてその口部材を下向きにして吊り下げた状態で用いられることが多いことから、図１０(a) に示す状態で液漏れを生じる可能性が高い。
【０００４】
【特許文献１】
特開２０００−７０３３６号公報（図１、段落〔００１３〕）
【０００５】
【発明が解決しようとする課題】
そこで、穿刺時の液漏れを防止することのできる口部材と、かかる口部材を備える薬液容器を得ることが求められている。
本発明の目的は、中空針等の穿刺部材を刺し通した状態で穿刺部材先端の開口部や、穿刺部材と栓体との隙間などから液が漏れたりするのを防止できる口部材と、当該口部材を口部に備える薬液容器とを提供することである。
【０００６】
【課題を解決するための手段および発明の効果】
上記課題を解決するための本発明に係る第１の口部材は、容器の口部に取り付けられてその注入／排出部を区画する口部材であって、略筒状の口部材本体および口部材本体から同芯状に外方へ突出する穿刺部材導入部ならびに穿刺部材導入部と口部材本体との境界部において、前記口部材本体の内部を封止する薄膜が一体に成形されてなる一体成形物と、前記薄膜よりも前記容器の口部側に配置され、前記一体成形物とは別材料で成形され、前記口部材本体の内部を封止する弾性体からなる栓体と、前記口部材本体内に嵌装され、前記栓体を固定する内枠体と、を備え、かつ、前記薄膜と前記栓体との間に空間が設けられていることを特徴とする。
【０００７】
上記課題を解決するための本発明に係る第２の口部材は、容器の口部に取り付けられてその注入／排出部を区画する口部材であって、略筒状の口部材本体および口部材本体から同芯状に外方へ突出する穿刺部材導入部ならびに穿刺部材導入部と口部材本体との境界部において、前記口部材本体の内部を封止する第１の薄膜が一体に成形されてなる一体成形物と、前記口部材本体内に嵌装される内枠体と、前記内枠体に連設されて前記第１の薄膜よりも前記容器の口部側に配置され、前記口部材本体の内部を封止する第２の薄膜と、を備え、かつ、前記第１の薄膜と前記第２の薄膜との間に空間が設けられていることを特徴とする。
【０００８】
上記課題を解決するための本発明に係る第３の口部材は、容器の口部に取り付けられてその注入／排出部を区画する口部材であって、略筒状の口部材本体および口部材本体から同芯状に外方へ突出する穿刺部材導入部ならびに穿刺部材導入部と口部材本体との境界部において、前記口部材本体の内部を封止する薄膜が一体に成形されてなる一体成形物と、前記口部材本体内に嵌装される内枠体と、前記内枠体に連設されて前記薄膜よりも前記容器の口部側に配置される略筒状または略漏斗状の可撓性を有する穿刺部材保持部と、を備え、かつ、前記薄膜と前記穿刺部材保持部との間に空間が設けられていることを特徴とする。
【０００９】
上記第１、第２および第３の口部材は、従来の口部材と同様に、口部材本体の内部が薄膜（または第１の薄膜）によって封止されていることから、容器に収容された内容液を取り出したりする際には、まず、この（第１の）薄膜を穿刺部材で刺し通す操作が必要となる。
さらに、上記第１の口部材では薄膜よりも容器の口部側に栓体が、上記第２の口部材では第１の薄膜よりも容器の口部側に第２の薄膜が、それぞれ口部材本体を封止するように設けられていることから、容器に収容された内容液を取り出したりする際には、口部材本体の開口端における（第１の）薄膜を刺し通すだけでなく、第１の口部材ではその栓体に、第２の口部材ではその第２の薄膜に、それぞれ穿刺部材を貫通させる必要が生じる。
【００１０】
第１および第２の口部材における口部材本体の（第１の）薄膜を貫通した穿刺部材の先端は、空間を通過して、第１の口部材では栓体に、第２の口部材では第２の薄膜に、それぞれ当接する。ここで、穿刺部材をさらに押入して、当該栓体または第２の薄膜を貫通させたときにも、（第１の）薄膜と、当該栓体または第２の薄膜との間には空間が設けられていることから、穿刺部材の先端で開口部が広い範囲にわたって現れていたとしても、（第１の）薄膜と、栓体または第２の薄膜とを跨いで容器内部と外部とが連通するという事態には至らない。それゆえ、上記第１および第２の口部材によれば、たとえ（第１の）薄膜に穿刺部材をゆっくり刺し通したとしても、液漏れの問題を生じることがない。
【００１１】
一方、上記第３の口部材では、薄膜よりも容器の口部側において、可撓性を有する略筒状または略漏斗状の穿刺部材保持部が配置されていることから、容器に収容された内容液を取り出したりする際には、口部材本体の栓体を刺し通すだけでなく、穿刺部材を上記穿刺部材保持部内に貫通させる必要が生じる。
ここで、第３の口部材における口部材本体の薄膜を貫通した穿刺部材の先端は、薄膜と穿刺部材保持部との間の空間を通過して、穿刺部材保持部内に収納される。それゆえ、たとえ上記薄膜を穿刺部材の先端が貫通した状態になったとしても、そのことによって直ちに容器の内部とその外部（口部材の外部）とが連通することにはならず、液漏れの発生を防止することができる。
【００１２】
また、穿刺部材の先端で開口部が広い範囲にわたって現れていたとしても、穿刺部材の構造上、その程度にはおのずと制限があること、さらに、上記薄膜と穿刺部材保持部との間には空間が設けられていることから、穿刺部材をさらに押入して穿刺部材保持部内を貫通させたとしても、薄膜と穿刺部材保持部とを跨いで容器内部と外部とが連通するという事態には至らない。
さらに、上記第１、第２および第３の口部材における栓体、第２の薄膜および穿刺部材保持部は、いずれも（第１の）栓体との間に空間を隔てて設けられていることから、これらに穿刺部材を貫通させたときに、穿刺部材を保持し、ぐらつきが生じるのを防止する効果を発揮する。なお、穿刺部材を保持する効果は、栓体、第２の薄膜または穿刺部材保持部の大きさや形状に拘わらず、（第１の）薄膜や、栓体、第２の薄膜または穿刺部材保持部を刺通可能な穿刺部材であれば、いずれの場合も同様に発揮される。
【００１３】
それゆえ、本発明に係る第１、第２および第３の口部材によれば、たとえ栓体に穿刺部材をゆっくり刺し通したとしても液漏れの問題を生じることがなく、しかも、穿刺部材の径や口部材本体の径に拘わらず、穿刺時の液漏れを防止することができる。
【００１４】
口部材本体と、第１の口部材における栓体、第２の口部材における第２の薄膜、または第３の口部材における穿刺部材保持部とを一体成形によって形成したときには、本発明に係る口部材の製造方法を簡易なものとすることができる。
本発明の薬液容器は、口部に、本発明の口部材を備えることを特徴とする。
上記の薬液容器によれば、本発明に係る第１、第２および第３の口部材についての効果と同様に、たとえ口部材の薄膜（第２の口部材を備える場合は、その第１の薄膜）に穿刺部材をゆっくり刺し通したとしても液漏れの問題を生じることがなく、しかも、穿刺部材の径や口部材本体の径に拘わらず、穿刺時の液漏れを防止することのできる薬液容器を得ることができる。
【００１５】
【発明の実施の形態】
次に、本発明の口部材およびそれを備える薬液容器について、図面を参照しつつ詳細に説明する。
〔第１の口部材およびそれを備える薬液容器〕
本発明に係る第１の口部材の一実施形態を図１および図２に、本発明に係る薬液容器の一実施形態を図３に、それぞれ示す。
【００１６】
図１に示す口部材１０は、略筒状の口部材本体１１および穿刺部材導入部１２と、略円盤状の薄膜１３および栓体１４と、略筒状の内枠体１５と、を備える。
口部材本体１１と、それに連設する穿刺部材導入部１２と、口部材本体１１の内部に嵌装される内枠体１５とは、第１の口部材１０を容器の口部に取り付けた場合において、その注入／排出路を区画するものである。
薄膜１３は、口部材本体１１の内部を封止するものである。口部材本体１１の内部がこの薄膜１３によって封止されていることから、口部材１０を備える容器から収容液を取り出したりする際には、まず、この薄膜１３を穿刺部材で刺し通す操作が必要となる。
栓体１４は、薄膜１３よりも容器の口部側に配置されて、口部材本体３１の内部を封止するものである。
【００１７】
図２(a) は穿刺部材８５を薄膜１３に刺し通した状態を示す断面図であって、同図(b) は穿刺部材８５を薄膜１３と栓体１４との双方に刺し通した状態を示す断面図である。
薄膜１３を貫通した穿刺部材８５の先端部分８６は、図２(a) に示すように、まず、栓体１４に突き当たる。この状態では穿刺部材８５が薄膜１３を貫通しているものの、穿刺部材８５の先端部分８６は栓体１４を貫通した状態とはなっていない。ここで、栓体１４は口部材本体１１の内部を封止するものであることから、図２(a) に示す状態では口部材１０の外部と内部（容器の内部側）とが連通しておらず、それゆえ、穿刺部材８５の開口部８８からの液漏れが防止される。
【００１８】
穿刺部材８５をさらに押入して、図２(b) に示すように、栓体１４を貫通させたときには、口部材１０の外部と内部（容器の内部側）とが連通した状態となることから、口部材１０を備える容器からその収容液を取り出したりする操作を行なうことができる。
内枠体１５は、口部材本体１１内で栓体１４が軸方向に摺動しないように固定するための部材であって、口部材本体１１の内部に栓体１４を配置した上で口部材本体１１に嵌装される。内枠体１５は口部材本体１１内に嵌装させた状態で固定させるほか、口部材本体１１と接着することによって固定させてもよい。
【００１９】
穿刺部材導入部１２を設けることによって、穿刺部材を挿入する際の操作性が良好なものとなる。また、穿刺部位導入部１２の外周面に突起からなる掛止部１２ａを設けたときには、いわゆるルアーロック型の穿刺部材に対応させることができる。
図１に示す第１の口部材１０には、口部材本体１１の、容器の口部に接続される側に略円形状のフランジ部１１ａが設けられている。そこで、この口部材１０を薬液容器２０の口部２１に取り付ける際には、例えば図３に示すように、フランジ部１１ａを容器本体２２に対して直接固定させればよい。
【００２０】
なお、第１の口部材１０には、その使用後に、口部を下に向けた状態で穿刺部材８５を穿刺部材導入部１２から抜き去ったとしても、栓体１４によって残液の漏出が防止できるという効果がある。
本発明に係る第１の口部材１０およびそれを口部に備える薬液容器は、図１および図３に示すものに限定されるものではなく、前述の作用効果を損なわないものであれば、種々の設計変更を施すことが可能である。
【００２１】
〔第２の口部材およびそれを備える薬液容器〕
本発明に係る第２の口部材の一実施形態を図４および図５に示す。
図４に示す口部材３０は、略筒状の口部材本体３１および穿刺部材導入部３２と、略円盤状の第１の薄膜３３および第２の薄膜３４と、略筒状の内枠体３５と、を備える。
口部材本体３１と、それに連設する穿刺部材導入部３２と、口部材本体３１の内部に嵌装される内枠体３５とは、第２の口部材３０を容器の口部に取り付けた場合において、その注入／排出路を区画するものである。
【００２２】
第１の薄膜３３は、口部材本体３１の内部を封止するものである。口部材本体３１の内部がこの薄膜３３によって封止されていることから、口部材３０を備える容器から収容液を取り出したりする際には、まず、この薄膜３３を穿刺部材で刺し通す操作が必要となる。
第２の薄膜３４は内枠体３５に連設されてなるものであって、第１の薄膜３３よりも容器の口部側において口部材本体３１の内部を封止するものである。
【００２３】
図５(a) は穿刺部材８５を第１の薄膜３３に刺し通した状態を示す断面図であって、同図(b) は穿刺部材８５を第１の薄膜３３と第２の薄膜３４との双方に刺し通した状態を示す断面図である。
第１の薄膜３３を貫通した穿刺部材８５の先端部分８６は、図５(a) に示すように、まず、第２の薄膜３４に突き当たる。この状態では穿刺部材８５が第１の薄膜３３を貫通しているものの、穿刺部材８５の先端部分８６は第２の薄膜３４を貫通した状態とはなっていない。ここで、第２の薄膜３４は口部材本体３１の内部を封止するものであることから、図５(a) に示す状態では口部材３０の外部と内部（容器の内部側）とが連通しておらず、それゆえ、穿刺部材８５の開口部８８からの液漏れが防止される。
【００２４】
穿刺部材８５をさらに押入して、図５(b) に示すように、第２の薄膜３４を貫通させたときには、口部材１０の外部と内部（容器の内部側）とが連通した状態となることから、口部材１０を備える容器からその収容液を取り出したりする操作を行なうことができる。
内枠体３５は、口部材本体３１内に第２の薄膜３４を配置するための部材であって、口部材本体３１に嵌装される。内枠体３５は口部材本体３１内に嵌装させた状態で固定させるほか、口部材本体３１と接着することによって固定させてもよい。
【００２５】
図４に示す実施形態では、第２の薄膜を備える内枠体３５を口部材本体３１に嵌装することによって、口部材３０内に２つの薄膜を形成しているが、口部材本体３１内において所定の空間を隔てて第１の薄膜と第２の薄膜とを形成することができるのであれば、第２の薄膜を口部材本体に直接設けてもよい。この場合、内枠体は不要となる。
穿刺部材導入部３２やその外周面の掛止部３２ａを設けたときの効果については、図１に示す第１の口部材１０の場合と同様である。
【００２６】
図４に示す第２の口部材３０には、口部材本体３１の、容器の口部に接続される側に略円形状のフランジ部３１ａが設けられている。そこで、この口部材３０を薬液容器の口部に取り付ける際には、図１に示す第１の口部材１０の場合と同様に、フランジ部３１ａを容器本体に対して直接固定させればよい。
本発明に係る第２の口部材３０およびそれを口部に備える薬液容器は、前述のものに限定されるものではなく、前述の作用効果を損なわないものであれば、種々の設計変更を施すことが可能である。
【００２７】
〔第３の口部材およびそれを備える薬液容器〕
本発明に係る第３の口部材の一実施形態を図６および図７に示す。
図６に示す口部材４０は、略筒状の口部材本体４１および穿刺部材導入部４２と、略円盤状の第１の薄膜４３と、略漏斗状の穿刺部材保持部４４と、略筒状の内枠体３５と、を備える。
口部材本体４１と、それに連設する穿刺部材導入部４２と、口部材本体４１の内部に嵌装される内枠体４５とは、第３の口部材４０を容器の口部に取り付けた場合において、その注入／排出路を区画するものである。
【００２８】
薄膜４３は、口部材本体４１の内部を封止するものである。口部材本体４１の内部がこの薄膜４３によって封止されていることから、口部材４０を備える容器から収容液を取り出したりする際には、まず、この薄膜４３を穿刺部材で刺し通す操作が必要となる。
穿刺部材保持部４４は、略筒状の内枠体４５に連設されて、薄膜４３よりも容器の口部側に配置されるものであって、可撓性を有することを特徴とする。
【００２９】
図７(a) は穿刺部材８５を薄膜４３に刺し通した状態を示す断面図であって、同図(b) は穿刺部材８５を薄膜４３と穿刺部材保持部４４との双方に刺し通した状態を示す断面図である。
薄膜４３を貫通した穿刺部材８５の先端部分８６は、図７(a) に示すように、まず、穿刺部材保持部４４内に収納される。この状態では穿刺部材８５が薄膜４３を貫通しているものの、穿刺部材８５の先端部分８６は穿刺部材８５の先端部分８６は穿刺部材保持部４４に取り囲まれた状態となっている。この穿刺部材保持部４４は内枠体４５に連設されたものであって、口部材本体４１と内枠体４４との間は封止されていることから、図７(a) に示す状態では口部材４０の外部と内部（容器の内部側）とが連通しておらず、それゆえ、穿刺部材８５の開口部８８からの液漏れが防止される。
【００３０】
穿刺部材８５をさらに押入して、図７(b) に示すように、穿刺部材保持部４４内を貫通させたときには、口部材４０の外部と内部（容器の内部側）とが連通した状態となることから、口部材４０を備える容器からその収容液を取り出したりする操作を行なうことができる。
内枠体４５は、口部材本体４１内に穿刺部材保持部４４を配置するための部材であって、口部材本体４１に嵌装される。内枠体４５は口部材本体４１内に嵌装させた状態で固定させるほか、口部材本体４１と接着することによって固定させてもよい。
【００３１】
図６に示す実施形態では、内枠体４５を口部材本体４１に嵌装することによって、口部材本体４１内に穿刺部材保持部４４を設けているが、口部材本体４１内において所定の空間を隔てて薄膜と穿刺部材保持部とを形成することができるのであれば、穿刺部材保持部を口部材本体に直接設けてもよい。この場合、内枠体は不要となる。
穿刺部材導入部４２やその外周面の掛止部４２ａを設けたときの効果については、図１に示す第１の口部材１０の場合と同様である。
【００３２】
図６に示す第３の口部材４０には、口部材本体４１の、容器の口部に接続される側に略円形状のフランジ部４１ａが設けられている。そこで、この口部材４０を薬液容器の口部に取り付ける際には、図１に示す第１の口部材１０の場合と同様に、フランジ部４１ａを容器本体に対して直接固定させればよい。
穿刺部材保持部は図６に示す形状に限定されるものではなく、薄膜４３を刺し通した穿刺部材の先端部分８６を保持し、その周囲を取り囲んだ状態とすることができるものであれば、例えば図８に示すように、漏斗状の裾部分を有しない穿刺部材保持部４４’であってもよい。
【００３３】
本発明に係る第３の口部材４０およびそれを口部に備える薬液容器は、前述のものに限定されるものではなく、前述の作用効果を損なわないものであれば、種々の設計変更を施すことが可能である。
【００３４】
〔口部材本体、外枠体および内枠体〕
口部材本体、穿刺部材導入部および内枠体は、例えば従来公知の種々のプラスチックを用いて形成することができる。特に熱可塑性樹脂を用いたときは、口部材本体等を射出成形によって簡易に形成することができる。
本発明の口部材を薬液容器の口部に適用する場合には、口部材等の形成用樹脂として、例えば医療器具用として許容された従来公知の種々のプラスチック（ポリマー、エラストマーを含む）を用いればよい。具体的には、ポリエチレン、ポリプロピレン、ポリ４−メチルペンテン〔例えば、三井化学（株）の商品名「ＴＰＸ」〕、ポリテトラフルオロエチレン等のポリオレフィン；エチレン−テトラシクロドデセン共重合体〔例えば、三井化学（株）の商品名「アペル」〕等のポリ環状オレフィン；ポリアセタール（ＰＯＭ）；アクリロニトリル−ブタジエン−スチレン共重合体（ＡＢＳ）；ポリエチレンナフタレート（ＰＥＮ）、ポリエチレンテレフタレート（ＰＥＴ）、ポリアリレート等のポリエステル；ポリフェニレンサルファイド（ＰＰＳ）等のベンゼン系重合体等が挙げられる。
【００３５】
〔栓体〕
栓体は、例えば従来公知の種々のゴムやエラストマーを用いて形成することができる。特に熱可塑性エラストマーを用いたときは、栓体を射出成形によって形成することができ、二色成形等の成形技術を採用することによりも、口部材本体と一体的に成形することができる。
栓体形成用のゴム／エラストマーとしては、薬液容器の口部用栓体として用いられている従来公知の種々の材料を用いることができる。具体的には、天然ゴム、シリコーンゴム等のゴムや、スチレン系エラストマー、オレフィン系エラストマー、ポリウレタン系エラストマー等の熱可塑性エラストマーが挙げられる。
【００３６】
〔穿刺部材保持部〕
穿刺部材保持部は、口部材本体形成用の材料として例示したのと同様の、従来公知の種々のプラスチックを用いて形成することができる。特に熱可塑性樹脂を用いたときには、穿刺部材保持部を、射出成形によって口部材本体（または内枠体等）と一体的に、かつ簡易に形成することができる。
〔薄膜〕
薄膜は、口部材本体形成用の材料として例示したのと同様の、従来公知の種々のプラスチックを用いて形成することができる。特に熱可塑性樹脂を用いたときには、射出成形によって口部材本体（または内枠体等）と一体的に、かつ簡易に形成することができる。
【図面の簡単な説明】
【図１】 (a) は本発明に係る口部材の一実施形態を示す断面図、(b) はその平面図である。
【図２】 (a) は図１に示す口部材１０に中空針を刺し通す途中の状態を示す断面図、(c) は口部材１０に中空針を完全に刺し通した状態を示す断面図である。
【図３】本発明に係る薬液容器の一実施形態を示す部分欠截正面図である。
【図４】本発明に係る口部材の他の実施形態を示す断面図である。
【図５】 (a) は図４に示す口部材３０に中空針を刺し通す途中の状態を示す断面図、(b) は口部材３０に中空針を完全に刺し通した状態を示す断面図である。
【図６】本発明に係る口部材のさらに他の実施形態を示す断面図である。
【図７】 (a) は図６に示す口部材４０に中空針を刺し通す途中の状態を示す断面図、(b) は口部材４０に中空針を完全に刺し通した状態を示す断面図である。
【図８】図６に示す口部材の設計変更例を示す断面図である。
【図９】従来の口部材の一例を示す断面図である。
【図１０】図９に示す口部材８０の薄膜８３に穿刺部材８５を刺し通した状態を示す断面図であって、(a) は穿刺部材を中途まで刺し通した状態を、(b) は穿刺部材を完全に刺し通した状態を、それぞれ示す。
【符号の説明】
１０，３０，４０口部材
１１，３１，４１口部材本体
１２，３２，４２穿刺部材導入部
１３，４３薄膜
１４栓体
２０薬液容器
２１口部
２２容器本体
３３第１の薄膜
３４第２の薄膜
４４穿刺部材保持部
４４’ 穿刺部材保持部
８５穿刺部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mouth member for preventing liquid leakage when a puncture member such as a hollow needle is pierced through a stopper, and a chemical solution container including the mouth member.
[0002]
[Prior art]
A liquid container such as an infusion bag or an infusion bottle used for infusion or intravenous injection generally includes an injecting / discharging unit that is also sealed by a stopper made of an elastic material such as rubber or elastomer. When discharging the contents of the chemical solution container or injecting another chemical solution, an operation of inserting a puncture member such as a hollow needle into the plug body is performed.
However, when the puncture member is pierced through the plug body, there is a possibility that the puncture member may be clogged due to the core ring of the plug body, or chips of the plug body may enter the container. Therefore, for example, a chemical solution container having a mouth sealed with a puncturable sheet or a thin film has been proposed (see Patent Document 1).
[0003]
By the way, a general puncture member such as a medical hollow needle is cut out obliquely with respect to the axial direction in order to sharpen the tip portion 86 as shown in FIGS. 10 (a) and 10 (b), for example. Is common. In such a puncture member 85, an opening 88 appears over a wide range of the notch surface 87 at the tip.
Therefore, when the puncture member 85 is slowly pierced through the mouth member 80 having the puncture member introduction portion 82 and the thin film 83 as shown in FIG. 9, the puncture member 85 is completely pierced (FIG. 10). Before reaching (b)), the outside and inside of the mouth member 80 communicate with each other through the hollow portion 88 of the puncture member 85 (shown by a line with an arrow in FIG. 10A) to some extent. This causes a problem that the liquid leaks from the opening 87 at the distal end of the puncture member 85. In particular, since the chemical container is often used in an actual medical site in a state where the mouth member is hung downward, there is a high possibility that liquid leakage will occur in the state shown in FIG.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-70336 (FIG. 1, paragraph [0013])
[0005]
[Problems to be solved by the invention]
Therefore, it is required to obtain a mouth member that can prevent liquid leakage at the time of puncturing and a chemical solution container including such a mouth member.
An object of the present invention is to provide a mouth member that can prevent liquid from leaking from the opening at the tip of the puncture member, the gap between the puncture member and the plug, and the like while the puncture member such as a hollow needle is pierced. It is providing a chemical | medical solution container provided with a mouth member in a mouth part.
[0006]
[Means for Solving the Problems and Effects of the Invention]
A first mouth member according to the present invention for solving the above problems is a mouth member that is attached to a mouth portion of a container and divides an injection / discharge portion thereof, and has a substantially cylindrical mouth member body and mouth member. A puncture member introducing portion that protrudes outward from the main body in a concentric manner, and an integral molding in which a thin film that seals the inside of the mouth member main body is integrally formed at the boundary portion between the puncture member introducing portion and the mouth member main body A plug body made of an elastic material that is disposed on the mouth side of the container relative to the thin film and is formed of a material different from the integrally molded product and seals the inside of the mouth member main body, and the mouth member An inner frame body that is fitted in the body and fixes the plug body, and a space is provided between the thin film and the plug body.
[0007]
The second mouth member according to the present invention for solving the above-mentioned problems is a mouth member attached to the mouth portion of the container to partition the injection / discharge portion, and is a substantially cylindrical mouth member main body and mouth member. The first thin film for sealing the inside of the mouth member main body is integrally formed at the puncture member introducing portion projecting outward from the main body concentrically and at the boundary between the puncture member introducing portion and the mouth member main body. An integrally formed product, an inner frame fitted in the mouth member main body, and arranged on the mouth side of the container relative to the first thin film and connected to the inner frame, and the mouth member And a second thin film for sealing the inside of the main body, and a space is provided between the first thin film and the second thin film.
[0008]
A third mouth member according to the present invention for solving the above-mentioned problems is a mouth member that is attached to a mouth portion of a container and divides the injection / discharge portion, and has a substantially cylindrical mouth member body and mouth member. A puncture member introducing portion that protrudes outward from the main body in a concentric manner, and an integral molding in which a thin film that seals the inside of the mouth member main body is integrally formed at the boundary portion between the puncture member introducing portion and the mouth member main body An object, an inner frame fitted in the mouth member main body, and a substantially cylindrical or substantially funnel-shaped movable member connected to the inner frame and disposed closer to the mouth of the container than the thin film. A puncture member holding portion having flexibility, and a space is provided between the thin film and the puncture member holding portion.
[0009]
The first, second, and third mouth members are housed in a container because the inside of the mouth member main body is sealed with a thin film (or a first thin film) , similarly to the conventional mouth member. When taking out the content liquid, first, an operation of piercing this (first) thin film with a puncture member is required.
Further, in the first mouth member, the stopper is closer to the mouth side of the container than the thin film, and in the second mouth member, the second thin film is closer to the mouth side of the container than the first thin film. Since it is provided to seal the main body, when taking out the content liquid contained in the container, not only the (first) thin film at the opening end of the mouth member main body is pierced but also the first It is necessary to penetrate the puncture member through the plug body in one mouth member and through the second thin film in the second mouth member.
[0010]
The tip of the puncture member penetrating the (first) thin film of the mouth member main body in the first and second mouth members passes through the space and becomes a plug in the first mouth member, and in the second mouth member. Each abuts against the second thin film. Here, even when the puncture member is further pushed in to penetrate the plug body or the second thin film, there is a space between the (first) thin film and the plug body or the second thin film. Even if the opening appears over a wide range at the tip of the puncture member, the inside and outside of the container communicate with each other across the (first) thin film and the plug or the second thin film. It does not lead to the situation of doing. Therefore, according to the first and second mouth members, even if the puncture member is slowly pierced through the (first) thin film, the problem of liquid leakage does not occur.
[0011]
On the other hand, in the third mouth member, the mouth portion of the container than the thin, flexible since the piercing member holder of a substantially cylindrical or substantially funnel shape is disposed having, housed in a container When taking out the content liquid, it is necessary not only to pierce the plug of the mouth member body but also to penetrate the puncture member into the puncture member holding portion.
Here, the tip of the puncture member penetrating the thin film of the mouth member main body in the third mouth member passes through the space between the thin film and the puncture member holding part and is stored in the puncture member holding part. Therefore, even if the tip of the puncture member penetrates through the thin film, the inside of the container and its outside (outside of the mouth member) do not immediately communicate with each other, and liquid leakage occurs. Occurrence can be prevented.
[0012]
Moreover, even if the opening appears over a wide range at the tip of the puncture member, the structure of the puncture member is naturally limited to that extent, and there is a space between the thin film and the puncture member holding portion. Therefore, even if the puncture member is further pushed in and penetrated through the puncture member holding portion, the inside and outside of the container do not communicate with each other across the thin film and the puncture member holding portion. .
Further, the plug body, the second thin film, and the puncture member holding portion in the first, second, and third mouth members are all provided with a space between them and the (first) plug body. Therefore, when the puncture member is penetrated through these, the puncture member is held, and the effect of preventing wobbling is exhibited. Note that the effect of holding the puncture member is that the (first) thin film, the plug, the second thin film, or the puncture member holding portion, regardless of the size or shape of the plug, the second thin film, or the puncture member holding portion. As long as it is a puncture member that can be pierced, the same effect can be obtained in any case.
[0013]
Therefore, according to the first, second and third mouth members according to the present invention, even if the puncture member is slowly pierced through the stopper, there is no problem of liquid leakage. Regardless of the diameter or the diameter of the mouth member main body, it is possible to prevent liquid leakage during puncturing .
[0014]
And mouth member body, the plug body at the first mouth member, when formed by integrally molding a piercing member holding unit in the second thin film or the third mouth member, that put the second mouth member, the present invention The manufacturing method of the mouth member can be simplified.
The chemical | medical solution container of this invention equips a mouth part with the mouth member of this invention, It is characterized by the above-mentioned.
According to said chemical | medical solution container, similarly to the effect about the 1st, 2nd, and 3rd opening member which concerns on this invention, even if it is provided with the thin film (When the 2nd opening member is provided, the 1st Even if the puncture member is slowly pierced through the thin film), there is no problem of liquid leakage, and it is possible to prevent liquid leakage during puncture regardless of the diameter of the puncture member or the diameter of the mouth member body. A container can be obtained.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, the mouth member of the present invention and the chemical solution container including the mouth member will be described in detail with reference to the drawings.
[First mouth member and chemical container provided therewith]
One embodiment of the first mouth member according to the present invention is shown in FIGS. 1 and 2, and one embodiment of the chemical container according to the present invention is shown in FIG.
[0016]
The mouth member 10 shown in FIG. 1 includes a substantially cylindrical mouth member main body 11 and a puncture member introducing portion 12, a substantially disk-shaped thin film 13 and a plug body 14, and a substantially cylindrical inner frame body 15.
When the first mouth member 10 is attached to the mouth of the container, the mouth member main body 11, the puncture member introducing portion 12 provided continuously therewith, and the inner frame 15 fitted inside the mouth member main body 11 In FIG. 1, the injection / discharge path is defined.
The thin film 13 seals the inside of the mouth member main body 11. Since the inside of the mouth member main body 11 is sealed with the thin film 13, when taking out the stored liquid from the container having the mouth member 10, first, an operation of piercing the thin film 13 with the puncture member is necessary. It becomes.
The plug 14 is arranged closer to the mouth of the container than the thin film 13 and seals the inside of the mouth member main body 31.
[0017]
2A is a cross-sectional view showing a state in which the puncture member 85 is pierced through the thin film 13, and FIG. 2B shows a state in which the puncture member 85 is pierced through both the thin film 13 and the plug body 14. It is sectional drawing shown.
The tip portion 86 of the puncture member 85 penetrating the thin film 13 first strikes the plug 14 as shown in FIG. In this state, the puncture member 85 penetrates the thin film 13, but the distal end portion 86 of the puncture member 85 is not in a state of penetrating the plug body 14. Here, since the plug 14 seals the inside of the mouth member main body 11, in the state shown in FIG. 2 (a), the outside and inside of the mouth member 10 (inside the container) communicate with each other. Therefore, liquid leakage from the opening 88 of the puncture member 85 is prevented.
[0018]
When the puncture member 85 is further pushed in and the stopper 14 is penetrated as shown in FIG. 2 (b), the outside and inside of the mouth member 10 (inside the container) are in communication with each other. Then, an operation of taking out the stored liquid from the container including the mouth member 10 can be performed.
The inner frame body 15 is a member for fixing the plug body 14 in the mouth member main body 11 so as not to slide in the axial direction, and after the plug body 14 is arranged inside the mouth member main body 11, the mouth member The main body 11 is fitted. The inner frame 15 may be fixed by being attached to the mouth member main body 11 or may be fixed by being bonded to the mouth member main body 11.
[0019]
By providing the puncture puncturing member introducing portion 12, the operability upon inserting the piercing member becomes good. Moreover, when the latching | locking part 12a which consists of protrusions is provided in the outer peripheral surface of the puncture site | part introduction part 12, it can be made to respond | correspond to what is called a luer lock type puncture member.
The first mouth member 10 shown in FIG. 1 is provided with a substantially circular flange portion 11a on the side of the mouth member main body 11 that is connected to the mouth portion of the container. Therefore, when attaching the mouth member 10 to the mouth portion 21 of the chemical solution container 20, the flange portion 11a may be directly fixed to the container body 22 as shown in FIG.
[0020]
In addition, even if the puncture member 85 is removed from the puncture member introduction portion 12 with the mouth facing downward after use, the plug 14 prevents leakage of residual liquid. There is an effect that can be done.
The first mouth member 10 according to the present invention and the chemical container including the mouth member 10 in the mouth are not limited to those shown in FIGS. 1 and 3, and various types can be used as long as the above-described effects are not impaired. It is possible to make design changes.
[0021]
[Second mouth member and chemical container including the same]
One embodiment of the second mouth member according to the present invention is shown in FIGS.
The mouth member 30 shown in FIG. 4 includes a substantially cylindrical mouth member main body 31 and a puncture member introducing portion 32, a substantially disc-shaped first thin film 33 and a second thin film 34, and a substantially tubular inner frame 35. And comprising.
When the second mouth member 30 is attached to the mouth of the container, the mouth member main body 31, the puncture member introduction part 32 provided continuously therewith, and the inner frame 35 fitted inside the mouth member main body 31 In FIG. 1, the injection / discharge path is defined.
[0022]
The first thin film 33 seals the inside of the mouth member main body 31. Since the inside of the mouth member main body 31 is sealed with the thin film 33, when the stored liquid is taken out from the container including the mouth member 30, first, an operation of piercing the thin film 33 with the puncture member is necessary. It becomes.
The second thin film 34 is connected to the inner frame body 35, and seals the inside of the mouth member main body 31 closer to the mouth side of the container than the first thin film 33.
[0023]
FIG. 5A is a cross-sectional view showing a state in which the puncture member 85 is pierced through the first thin film 33, and FIG. 5B shows the puncture member 85 with the first thin film 33 and the second thin film 34. It is sectional drawing which shows the state stabbed in both.
The tip portion 86 of the puncture member 85 penetrating the first thin film 33 first strikes the second thin film 34 as shown in FIG. 5 (a). In this state, the puncture member 85 penetrates the first thin film 33, but the distal end portion 86 of the puncture member 85 is not in a state of penetrating the second thin film 34. Here, since the second thin film 34 seals the inside of the mouth member main body 31, the outside and inside of the mouth member 30 (inner side of the container) communicate with each other in the state shown in FIG. Therefore, liquid leakage from the opening 88 of the puncture member 85 is prevented.
[0024]
When the puncture member 85 is further pushed in to penetrate the second thin film 34 as shown in FIG. 5 (b), the outside and inside of the mouth member 10 (inside the container) are in communication. Therefore, an operation of taking out the stored liquid from the container including the mouth member 10 can be performed.
The inner frame body 35 is a member for disposing the second thin film 34 in the mouth member main body 31 and is fitted to the mouth member main body 31. The inner frame 35 may be fixed by being attached to the mouth member main body 31 or may be fixed by being bonded to the mouth member main body 31.
[0025]
In the embodiment shown in FIG. 4, two thin films are formed in the mouth member 30 by fitting the inner frame body 35 having the second thin film to the mouth member body 31. As long as the first thin film and the second thin film can be formed with a predetermined space therebetween, the second thin film may be provided directly on the mouth member body. In this case, the inner frame is not necessary.
The effect of having a puncture puncturing member introducing portion 32 and the engaging portion 32a of the outer circumferential surface thereof is the same as in the first mouth member 10 shown in FIG.
[0026]
The second mouth member 30 shown in FIG. 4 is provided with a substantially circular flange 31a on the side of the mouth member main body 31 that is connected to the mouth of the container. Therefore, when the mouth member 30 is attached to the mouth portion of the chemical solution container, the flange portion 31a may be directly fixed to the container body as in the case of the first mouth member 10 shown in FIG.
The second mouth member 30 according to the present invention and the chemical solution container provided with the mouth member 30 are not limited to those described above, and various design changes are made as long as the above-described effects are not impaired. It is possible.
[0027]
[Third mouth member and chemical container including the same]
An embodiment of a third mouth member according to the present invention is shown in FIGS.
The mouth member 40 shown in FIG. 6 includes a substantially cylindrical mouth member main body 41 and a puncture member introducing portion 42, a substantially disc-shaped first thin film 43, a substantially funnel-shaped puncture member holding portion 44, and a substantially tubular shape. The inner frame body 35 is provided.
When the third mouth member 40 is attached to the mouth of the container, the mouth member main body 41, the puncture member introducing portion 42 connected thereto, and the inner frame body 45 fitted inside the mouth member main body 41 In FIG. 1, the injection / discharge path is defined.
[0028]
The thin film 43 seals the inside of the mouth member main body 41. Since the inside of the mouth member main body 41 is sealed with the thin film 43, when taking out the stored liquid from the container having the mouth member 40, first, an operation of piercing the thin film 43 with the puncture member is necessary. It becomes.
The puncture member holding part 44 is connected to the substantially cylindrical inner frame 45 and is arranged closer to the mouth side of the container than the thin film 43, and is characterized by having flexibility.
[0029]
FIG. 7A is a cross-sectional view showing a state in which the puncture member 85 is pierced through the thin film 43, and FIG. 7B shows a state where the puncture member 85 is pierced through both the thin film 43 and the puncture member holding portion 44. It is sectional drawing which shows a state.
The distal end portion 86 of the puncture member 85 penetrating the thin film 43 is first accommodated in the puncture member holding portion 44 as shown in FIG. 7 (a). In this state, the puncture member 85 penetrates the thin film 43, but the distal end portion 86 of the puncture member 85 is surrounded by the puncture member holding portion 44. Since the puncture member holding portion 44 is connected to the inner frame body 45 and the mouth member main body 41 and the inner frame body 44 are sealed, the state shown in FIG. Then, the outside and the inside (the inside of the container) of the mouth member 40 do not communicate with each other, and therefore liquid leakage from the opening 88 of the puncture member 85 is prevented.
[0030]
When the puncture member 85 is further pushed in and penetrated through the puncture member holding portion 44, as shown in FIG. 7 (b), the outside of the mouth member 40 and the inside (the inside of the container) communicate with each other. Therefore, an operation of taking out the stored liquid from the container including the mouth member 40 can be performed.
The inner frame body 45 is a member for disposing the puncture member holding portion 44 in the mouth member main body 41 and is fitted to the mouth member main body 41. The inner frame body 45 may be fixed by being attached to the mouth member main body 41 in addition to being fixed in a state of being fitted in the mouth member main body 41.
[0031]
In the embodiment shown in FIG. 6, the puncture member holding portion 44 is provided in the mouth member main body 41 by fitting the inner frame body 45 to the mouth member main body 41, but a predetermined space in the mouth member main body 41 is provided. As long as the thin film and the puncture member holding part can be formed with a gap therebetween, the puncture member holding part may be provided directly on the mouth member main body. In this case, the inner frame is not necessary.
The effect of having a puncture puncturing member introducing portion 42 and the engaging portion 42a of the outer circumferential surface thereof is the same as in the first mouth member 10 shown in FIG.
[0032]
The third mouth member 40 shown in FIG. 6 is provided with a substantially circular flange 41a on the side of the mouth member main body 41 that is connected to the mouth of the container. Therefore, when the mouth member 40 is attached to the mouth portion of the chemical solution container, the flange portion 41a may be directly fixed to the container body as in the case of the first mouth member 10 shown in FIG.
The puncture member holding portion is not limited to the shape shown in FIG. 6, as long as it can hold the distal end portion 86 of the puncture member pierced with the thin film 43 and surround the periphery thereof, For example, as shown in FIG. 8, it may be a puncture member holding portion 44 ′ that does not have a funnel-shaped hem portion.
[0033]
The third mouth member 40 according to the present invention and the chemical container including the mouth member 40 in the mouth portion are not limited to those described above, and various design changes are made as long as the above-described effects are not impaired. It is possible.
[0034]
[Mouth member body, outer frame body and inner frame body]
The mouth member main body, the puncture member introducing portion, and the inner frame can be formed using, for example, various conventionally known plastics. In particular, when a thermoplastic resin is used, the mouth member body and the like can be easily formed by injection molding.
When the mouth member of the present invention is applied to the mouth of a chemical container, various conventionally known plastics (including polymers and elastomers) that are permitted for use in medical devices, for example, are used as the resin for forming the mouth member. That's fine. Specifically, polyethylene, polypropylene, poly 4-methylpentene [for example, trade name “TPX” of Mitsui Chemicals, Inc.], polyolefin such as polytetrafluoroethylene; ethylene-tetracyclododecene copolymer [for example, Polycyclic olefins such as Mitsui Chemicals' trade name “Apel”]; polyacetal (POM); acrylonitrile-butadiene-styrene copolymer (ABS); polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyarylate And benzene polymers such as polyphenylene sulfide (PPS).
[0035]
[Plug]
The plug can be formed using, for example, various conventionally known rubbers and elastomers. In particular, when a thermoplastic elastomer is used, the plug can be formed by injection molding, and can be formed integrally with the mouth member body by adopting a molding technique such as two-color molding.
As the rubber / elastomer for forming the plug, various conventionally known materials that are used as plugs for mouths of chemical liquid containers can be used. Specific examples include rubbers such as natural rubber and silicone rubber, and thermoplastic elastomers such as styrene elastomers, olefin elastomers, and polyurethane elastomers.
[0036]
(Puncture member holding part)
The puncture member holding part can be formed using various conventionally known plastics similar to those exemplified as the material for forming the mouth member main body. In particular, when a thermoplastic resin is used, the puncture member holding portion can be formed integrally and simply with the mouth member main body (or inner frame body or the like) by injection molding.
[Thin film]
The thin film can be formed using various conventionally known plastics similar to those exemplified as the material for forming the mouth member main body. Particularly when using a thermoplastic resin, integrally with the mouth member body (or inner frame member, etc.) by molding out morphism, and can be easily formed.
[Brief description of the drawings]
1A is a cross-sectional view showing an embodiment of a mouth member according to the present invention, and FIG. 1B is a plan view thereof.
2A is a cross-sectional view showing a state where the hollow needle is pierced through the mouth member 10 shown in FIG. 1, and FIG. 2C is a cross-sectional view showing a state where the hollow needle is completely pierced through the mouth member 10. It is.
FIG. 3 is a partially cutaway front view showing an embodiment of a chemical container according to the present invention.
FIG. 4 is a cross-sectional view showing another embodiment of the mouth member according to the present invention.
5A is a cross-sectional view showing a state where the hollow needle is pierced through the mouth member 30 shown in FIG. 4, and FIG. 5B is a cross-sectional view showing a state where the hollow needle is completely pierced through the mouth member 30. It is.
FIG. 6 is a cross-sectional view showing still another embodiment of the mouth member according to the present invention.
7A is a cross-sectional view showing a state where the hollow needle is pierced through the mouth member 40 shown in FIG. 6, and FIG. 7B is a cross-sectional view showing a state where the hollow needle is completely pierced through the mouth member 40. It is.
8 is a cross-sectional view showing a design change example of the mouth member shown in FIG.
FIG. 9 is a cross-sectional view showing an example of a conventional mouth member.
10 is a cross-sectional view showing a state in which the puncture member 85 is pierced through the thin film 83 of the mouth member 80 shown in FIG. 9, wherein (a) shows a state in which the puncture member has been punctured halfway; A state where the puncture member is completely pierced is shown.
[Explanation of symbols]
10, 30, 40 Mouth member 11, 31, 41 Mouth member main body 12, 32, 42 Puncture member introduction part 13, 43 Thin film 14 Plug body 20 Chemical liquid container 21 Mouth part 22 Container main body 33 First thin film 34 Second thin film 44 Puncture member holding portion 44 'Puncture member holding portion 85 Puncture member

Claims

A mouth member attached to the mouth portion of the container to partition the injection / discharge portion,
The inside of the mouth member main body is sealed at the substantially cylindrical mouth member main body, the puncture member introducing portion protruding outward from the mouth member main body concentrically, and the boundary portion between the puncture member introducing portion and the mouth member main body. An integrally molded product formed by integrally forming a thin film;
A plug body made of an elastic body that is disposed on the mouth side of the container with respect to the thin film, is formed of a material different from the integrally molded product, and seals the inside of the mouth member main body,
An inner frame body that is fitted in the mouth member main body and fixes the plug body, and
A mouth member, wherein a space is provided between the thin film and the plug.

A mouth member attached to the mouth portion of the container to partition the injection / discharge portion,
The inside of the mouth member main body is sealed at the substantially cylindrical mouth member main body, the puncture member introducing portion protruding outward from the mouth member main body concentrically, and the boundary portion between the puncture member introducing portion and the mouth member main body. An integrally molded product formed by integrally molding the first thin film;
An inner frame fitted in the mouth member body;
A second thin film that is connected to the inner frame and is disposed closer to the mouth of the container than the first thin film, and seals the inside of the mouth member main body, and
A mouth member, wherein a space is provided between the first thin film and the second thin film.

A mouth member attached to the mouth portion of the container to partition the injection / discharge portion,
The inside of the mouth member main body is sealed at the substantially cylindrical mouth member main body, the puncture member introducing portion protruding outward from the mouth member main body concentrically, and the boundary portion between the puncture member introducing portion and the mouth member main body. An integrally molded product formed by integrally forming a thin film;
An inner frame fitted in the mouth member body;
A substantially cylindrical or substantially funnel-shaped flexible puncture member holding portion that is connected to the inner frame body and disposed closer to the mouth side of the container than the thin film, and
A mouth member, wherein a space is provided between the thin film and the puncture member holding portion.

A chemical solution container comprising the mouth member according to claim 1 at the mouth.