JP3973703B2 - Medical multi-chamber container - Google Patents

Medical multi-chamber container Download PDF

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JP3973703B2
JP3973703B2 JP27219094A JP27219094A JP3973703B2 JP 3973703 B2 JP3973703 B2 JP 3973703B2 JP 27219094 A JP27219094 A JP 27219094A JP 27219094 A JP27219094 A JP 27219094A JP 3973703 B2 JP3973703 B2 JP 3973703B2
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container
polymer composition
chamber container
seal
medical multi
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JPH08131515A (en
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靖 中村
和伸 杉山
修身 東雲
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TRUMO KABUSHIKI KAISHA
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TRUMO KABUSHIKI KAISHA
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Description

【0001】
【産業上の利用分野】
本発明は、2種以上の医薬液を互いに隔離された別々の収容室で保存し、使用時には隔離部を破断し各室間を連通することによって該複数の医薬液をクローズドの状態で混合するに適した医療用複室容器に関する。
【0002】
【従来の技術】
医療分野では複数の薬剤成分を混合した状態で生体内に投与することはごく一般的であるが、混合する薬剤成分の組み合わせによっては次のような方法が採られる。
【0003】
例えば輸液の場合、アミノ酸とブドウ糖とを含む液はメイラード反応による変質が起こりやすいので、各成分を別々の閉鎖系に保存しておき、患者に投与する直前に混合することが多いが、この際混合操作を無菌的に(クローズドシステムで)行うために、また操作を容易に行うために、複数の収容室に区画された容器を用い、該収容室の各々に異なる輸液を保存しておき、使用直前に区画された収容室を何らかの手段を用いてクローズドシステム内で連通させ混合する方法が実用化されるようになった。
【0004】
収容室の区画手段としては、使用直前までは安定に成分輸液を隔離でき、使用時(混合時)には容易に連通させ得ることが大切であり、種々の形態が提案されている。
【0005】
代表的なものとしては、
▲1▼ (特開昭53−38189号、特開昭57−123149号、特開昭61−103823号、特開平1−160558号など)のように収容室間を外側からクランプで狭窄するもの
▲2▼ (実開昭57−76636号など)のように収容室間を容器外に露出したチューブで連結し、該チューブをクランプで狭窄するもの
▲3▼ (特開昭57−52455号、特表昭58−501855号、特開昭63−11161号、特開平3−238647号、特表昭61−500055号、特開昭63−309263号、特開昭63−317481号など)のように収容室間に使用時連通可能な連通具を持つもの
▲4▼ (特表昭61−500055号、特開昭63−19149号(特公平6−26563号)、特開昭63−309263号、特開平1−240469号、特開平2−4671号、特開平2−57584号、特開平2−241457号、特開平2−255418号、特開平4−242647号、特開平5−31153号、特開平5−68702号など)のように収容室間の隔壁部のシールを比較的安定でかつ混合時には容易に破断できる程度の接着強度としたものである。
【0006】
これらのうちでは操作が最も容易で実用性があるのは、▲4▼のいわゆるイージーピーラブルタイプの複室容器であり、近年目立って提案が多くなっている。
【0007】
このタイプの技術的ポイントは収容室間の隔壁シールは製造時あるいは輸送時には破断が起こりにくく、使用時(混合時)には手、治具などで容易に破断できる程度のシール強度を示すこと、かつ外界(大気)とつながる境界部の破断強度が十分に大きいことにある。
【0008】
従って相対する内壁面の材質の選定が最重要であり、ミクロ層分離型の材質例えばポリエチレンとポリプロピレンとの混合物、ポリエチレンと架橋ポリエチレンとの混合物などが一般に使われる(これらはシール部の破断時にいわゆる凝集剥離を起こすタイプである)。
【0009】
しかしながら、問題なのはこれらが輸液容器としての材料性能すなわち安全性、柔軟性、透明性、耐熱性(耐高圧蒸気滅菌性)、外観などを満たすか否か、また生産性に対する支障がないか否かである。
【0010】
例えばポリエチレンとポリプロピレンとの混合物は透明性が十分でないので医療用液の汚れ等の確認が困難であり、またポリエチレンと架橋ポリエチレンとの混合物はゲル状物が発生しやすいため、生産性に劣る。
【0011】
【発明が解決しようとする課題】
本発明は上記の如きイージーピール型医療用複室容器につきものの材質の問題の解消を課題としてなされたものである。
【0012】
【課題を解決するための手段】
本発明は、アイソタクチックタイプの結晶性ホモポリマーを主成分とする曲げ弾性率が6000〜9000kg/cm2の結晶性ポリプロピレンランダムコポリマー(A)とエチレン−α−オレフィンコポリマー系エラストマーである密度0.879〜0.90g/cm3 のエチレン−ブテン−1コポリマー(B)との重合体組成物を内壁面とする医薬液容器であって、該医薬液容器は、相対する内壁面の一部に設けられた破断可能な弱シールによって複数の収容室に区画されている医療用複室容器である。
【0013】
本発明において、ポリプロピレン系ポリマー(以下PPと称す)(A)は通常の立体規則性構造のポリプロピレンすなわちアイソタクチックもしくはシンジオタクチックタイプの結晶性ホモポリマーまたはこれらを主成分とする結晶性コポリマーであるが、透明性や柔軟性(低曲げ弾性率)という点でコポリマー特にランダムコポリマーが有利である。
【0014】
コモノマーとしてはエチレン、ブテン−1、ペンテン−1、ヘキセン−1、オクテン−1、デセン−1、ドデセン−1、4−メチルペンテン−1など炭素原子数2〜12のα−オレフィン類がよく、コモノマー量は5〜40モル%程度、より好ましくは8〜35モル%程度が適当である。
【0015】
ここでJISK7203によるPPの曲げ弾性率は10,000kg/cm2以下であるのが好ましい。曲げ弾性率が10,000kg/cm2 を超えると、エチレン−α−オレフィンコポリマー(B)との重合体組成物の剛性が必然的に高くなり、プラスチック輸液容器の特徴である、点滴時に通気針がなくても排液されるいわゆる自己排液性が損われやすいからである。好ましい曲げ弾性率は9,000kg/cm2 以下、より好ましくは8,000kg/cm2 以下である。
【0016】
また、耐熱性の点からPPはJISK7206によるビカット軟化点が100℃以上であるのが好ましい。
【0017】
そして成形性、成形物(容器シート)の力学的性質などを考慮すると、温度230℃、荷重2,160gにおけるMFR(メルトフローレイト)が0.3〜20、より好ましくは0.5〜10のものがよい。
【0018】
次に本発明において、エチレン−α−オレフィンコポリマー系エラストマー(以下TPEと称す)(B)はエチレンとプロピレン、ブテン−1、ヘキセン−1などのα−オレフィン類とのコポリマーのうち非晶性もしくは低結晶性の軟質ポリマー(エラストマー)を意味し、密度0.90g/cm3 以下でビカット軟化点が50〜70℃以下で、エチレン含有量が25〜75重量%程度のものが選ばれる。
【0019】
TPE(B)は上記PP(A)と適度に相溶してミクロ層分離構造を形成し、イージーピール性を発現させる。また、PP(A)の透明性を保ったまま柔軟にする働きを有している。
【0020】
そして、TPEは成形性、成形物の力学的性質などを考慮すると、温度230℃、荷重2,160gにおけるMFRが0.5〜15、より好ましくは1〜10程度であるのがよい。
【0021】
本発明の医療用複室容器の内壁面を形成するのは(A)と(B)との重合体組成物であるのは冒頭に示した通りであり、一般には該重合体組成物は(A)と(B)との重量比が50:50〜90:10、より好ましくは65:35〜85:15であるのがよい。この範囲で重合体組成物はイージーピール性が良好となりやすい。
【0022】
(A)が多いと剛性が高くなり容器の柔軟性が低下し、(A)が少いと重合体組成物の耐熱性が低下する傾向にあることに注意する必要がある。
【0023】
また、本発明の医療用複室容器は内壁面が(A)と(B)との重合体組成物であり、
▲1▼ (A)と(B)との重合体組成物のシート単独からなる場合と、
▲2▼ (A)と(B)との重合体組成物を内層(容器の内壁面)とし、他のポリマー(または他の重合体組成物)を外層あるいは中間層とする多層シートの場合がある。
【0024】
▲2▼では容器の水蒸気、酸素などのガスバリアー性、透明性、柔軟性、耐熱性、強度などの要求性能に応じて他のポリマー(または他の重合体組成物)が使われるが、具体的に好ましい代表例は次の通りである。
【0025】
(イ)ブテン−1、ペンテン−1、ヘキセン−1、オクテン−1、4−メチルペンテン−1などのα−オレフィン類を共重合成分とする密度0.91〜0.930g/cm3 の線状密度ポリエチレン。
【0026】
(ロ)結晶性ポリプロピレンまたはこれを主成分とする結晶性ポリプロピレン系コポリマー。ただし、これらは一般に剛性が高いので薄層として用いることが好ましい。
【0027】
(ハ)(ロ)とアモルファスポリプロピレン(アタクチックポリプロピレン)、ポリスチレン−エチレンブチレンコポリマー−ポリスチレン型のブロックコポリマーもしくはポリスチレン−エチレンプロピレンコポリマー−ポリスチレン型ブロックコポリマーとの重合体組成物。
【0028】
本発明の医療用複室容器を形成するシートの厚さは全体で0.2〜0.6mm、より好ましくは0.25〜0.45mmで、複層の場合(前述の▲2▼の場合)、(A)と(B)との重合体組成物層は0.01mm以上、好ましくは0.02mm以上であるのがよい。
【0029】
本発明の複室容器は通常公知の方法で製造される。すなわち、単層用あるいは多層用のTダイまたはサーキュラーダイを介して押出し(溶融温度は160〜230℃、さらに好ましくは170〜210℃)、得られたフラット状のシート、チューブ状のシート、パリソンなどについてサーモフォーミング、ブロー、延伸(熱シール性を考慮すると無延伸の方がよいが)、裁断、融着などの手法を適宜活用して所定の形状・形態に加工すればよい。
【0030】
複室容器の作製で最も重要なポイントは熱シールの工程である。すなわち、
▲1▼ 複数の収容室間の仕切り(隔壁部のシールは製造時あるいは輸送時は破断が起こりにくく、使用時(混合時)には、手、治具などで容易に破断できる程度のシール強度(一般には180°剥離強度が0.5〜1.3kg/15mm程度)すなわち弱シール性を示し、
▲2▼ 外界と接する部分のシール(周縁シール)は通常の輸送・使用時にかかる力では容易には破断できない程度のシール強度(180°剥離強度が1.5kg/15mm以上、より好ましくは2kg/15mm以上)であることが要求されるため、仕切り部シールと周縁シールの条件のコントロールが大切である。
【0031】
本発明の容器の場合、仕切り部シールは温度100〜150℃、圧力1〜4kg/cm2 、時間0.2〜5秒、シール幅2〜10mm、周縁シールは温度120〜200℃、圧力2〜5kg/cm2 、時間0.2〜10秒、シール幅5mm以上の範囲で行うのが通常である。
【0032】
また収容室の数は2〜4個が一般的である。
【0033】
また、(A)と(B)との重合体組成物の調製は通常公知の単軸もしくは2軸の溶融混合押出機や静的溶融混合機を利用して行うことができる。混合時の溶融温度は160〜220℃の範囲が好ましい。
【0034】
なお、本発明の趣旨を損なわない範囲で、(A)と(B)との重合体組成物にさらにスチレン系エラストマーやオレフィン系エラストマーを添加することもさしつかえない。
【0035】
また、シート間のブロッキングを防ぐために容器の内面や外面を粗面化すること、アンチブロッキング剤やスリップ剤を添加することもあり得る。
【0036】
本発明の複室容器はアミノ酸液とブドウ糖液の組み合わせの如く、混合時に変質の起こりやすい薬剤の組み合わせに有効であり、輸液のみならず血液分野にも適用され得る。
【0037】
【実施例】
以下実施例によって本発明をさらに具体的に説明するが本発明はこれらの実施例により何ら限定されるものではない。(実施例1〜4、比較例1)
1.実験方法
(1)原料ポリマーの準備:使用した原料ポリマーを表1に示す。
【0038】
【表1】

Figure 0003973703
【0039】
(2) 重合体組成物の調製:表1のPP(A1 、A2 )、TPE(B1 、B2 )、アモルファスポリプロピレンを原料とし、45mmφの2軸溶融混練押出機を用いて、所定の割合で150〜180℃の温度範囲で混練し、押出されたストランドを水冷・カッティング・乾燥して表2に示すペレット状重合体組成物を得た。
【0040】
【表2】
Figure 0003973703
【0041】
(3) シートの作製:単層用または多層用のサーキュラーダイ(インフレダイ)から180〜200℃でチューブラー状のシートを押出し、冷水リングで冷却後、厚さ0.28mm、折径200mmのシートを5m/分の速度で巻き取った。
【0042】
(4)複室容器の作製:▲3▼で得られたシートを300mm長に裁断し、中央部の幅5mmを温度110℃(ただし比較例1は130℃)、圧力2kg/cm2 、時間5秒の条件で熱シール後、片方の室にアミノ酸3wt%含有水溶液、もう一方の室にブドウ糖15wt%含有水溶液各400mlを入れ、両端を幅10mm、温度160℃(ただし、比較例1は180℃)、圧力4kg/cm2 、時間5秒の条件で熱シールし、区画室が2個の薬液入り複室容器を作製した。
【0043】
(5)高圧蒸気滅菌:▲4▼の容器をレトルト型高圧蒸気滅菌機に入れ、窒素雰囲気中で温度110℃、ゲージ圧1.8kg/cm2 、時間30分の条件において滅菌し、室温まで冷却した。
【0044】
(6)容器の透明性の評価:▲5▼の容器を窒素雰囲気中で48時間放置した後、容器シートの一部を切り取って、波長450nmにおける水中透過率を島津ダブルビーム型自記分光光度計UV−300にて測定し、透明性の尺度とした。
【0045】
(7)容器の柔軟性の評価:▲5▼の容器のシートをダンベル状に裁断し、JISK7113に準じて引張弾性率を測定し、柔軟性との尺度とした。
【0046】
(8)シール強度の測定:▲5▼の容器の中央部(仕切り部)および端部(周縁部)のシール部を切り取り、300mm/分の速度で180°剥離強度を測定した(表3中の剥離強度は15mm幅に換算した値である)。
【0047】
(9)容器の仕切り部の破断性(連通性)の評価:▲5▼のシートを机の上に寝かせて置き、一方の収容室側を手で押さえる程度で仕切り部のシールが破断するか否か確認した(各例につき5回テスト)。
【0048】
(10)重金属および溶出物試験:日本薬局方一般試験法「輸液用プラスチック容器試験法」に準じ、▲3▼で得られたシートについて試験を行った。
【0049】
2.実験結果(表3参照)
(1)重合体組成物の調製およびシートの作製:いずれも順調で、異物、発泡、ブロッキングなどは観察されず、均一性に富む重合体組成物ペレットおよびシートがいずれの場合も得られた。
【0050】
(2)重金属および溶出物試験結果:いずれの組成においても重金属および溶出物は日本薬局方の「輸液用プラスチック容器試験法」に適合することが確認された。
【0051】
(3)透明性および柔軟性:表3にシートの構成と高圧蒸気滅菌後の透明性(水中透過率)、柔軟性(引張弾性率)およびシール強度を示す。
【0052】
本発明における重合体組成物を使用した容器はいずれも透明性と柔軟性に優れていることがわかる。一方、通常のポリエチレンをPPと組合せても透明性、柔軟性に劣るのは明らかである。
【0053】
【表3】
Figure 0003973703
【0054】
(4)容器の仕切り部の破断性(連通性):いずれも(比較例を含めて)良好であり、容易に連通させることができた(表3のシール強度もこれを裏付けている)。
【0055】
【発明の効果】
以上詳細した如く、本発明の医療用複室容器はポリプロピレン系ポリマー(A)とエチレン−α−オレフィンコポリマー系エラストマー(B)との適度の相溶性を巧みに利用したものであり、複室容器としての性能を満たすのはもちろん、透明性や柔軟性も発現しやすく、生産性にも優れるので、医療分野に大きく貢献するものと期待される。[0001]
[Industrial application fields]
In the present invention, two or more kinds of medicinal liquids are stored in separate storage chambers separated from each other, and when in use, the plural medicinal liquids are mixed in a closed state by breaking the separating portion and communicating between the chambers. It is related with the medical multi-chamber container suitable for.
[0002]
[Prior art]
In the medical field, it is very common to administer a plurality of drug components in a living body in a mixed state, but depending on the combination of drug components to be mixed, the following method is adopted.
[0003]
For example, in the case of infusion, a solution containing amino acids and glucose is likely to be altered by the Maillard reaction, so each component is often stored in a separate closed system and mixed immediately before administration to the patient. In order to perform the mixing operation aseptically (with a closed system) and to perform the operation easily, a container partitioned into a plurality of storage chambers is used, and different infusion solutions are stored in each of the storage chambers. A method has been put to practical use in which a storage chamber partitioned immediately before use is communicated and mixed in a closed system using some means.
[0004]
As the compartment means, it is important that the component infusion can be stably isolated until just before use, and can be easily communicated during use (during mixing), and various forms have been proposed.
[0005]
As a representative one,
(1) Narrowing between storage chambers with clamps from the outside, as in JP-A-53-38189, JP-A-57-123149, JP-A-61-103823, JP-A-1-160558, etc. (2) A structure in which the storage chambers are connected to each other by a tube exposed outside the container as in (Japanese Utility Model Publication No. 57-76636) and the tube is narrowed by a clamp (3) (Japanese Patent Laid-Open No. 57-52455, No. 58-501855, No. 63-11116, No. 3-238647, No. 61-500055, No. 63-309263, No. 63-317481, etc.) (4) (Japanese Patent Publication No. 61-500055, Japanese Patent Laid-Open No. 63-19149 (Japanese Patent Publication No. 6-26563), Japanese Patent Publication No. 63-309263) , JP JP-A Nos. 1-240469, JP-A-2-46771, JP-A-2-57584, JP-A-2-241457, JP-A-2-255418, JP-A-4-242647, JP-A-5-31153, JP-A-5-31153 No. 5-68702 etc.), the seal of the partition wall between the storage chambers has a relatively stable adhesive strength that can be easily broken during mixing.
[0006]
Among them, the so-called easy-peelable type multi-chamber container (4) has the most prominent proposals in recent years.
[0007]
The technical point of this type is that the bulkhead seal between the storage chambers is not easily broken during manufacturing or transportation, and shows a seal strength that can be easily broken by hand or jig when used (mixed). In addition, the breaking strength at the boundary connected to the outside world (atmosphere) is sufficiently high.
[0008]
Therefore, the selection of the material of the opposite inner wall surface is the most important, and micro layer separation type materials such as a mixture of polyethylene and polypropylene, a mixture of polyethylene and cross-linked polyethylene are generally used (these are so-called when the seal part is broken) It is a type that causes cohesive peeling).
[0009]
However, the problems are whether or not they satisfy the material performance as an infusion container, that is, safety, flexibility, transparency, heat resistance (high-pressure steam sterilization resistance), appearance, etc., and whether there are any problems with productivity. It is.
[0010]
For example, since a mixture of polyethylene and polypropylene is not sufficiently transparent, it is difficult to check for contamination of medical liquids, and a mixture of polyethylene and crosslinked polyethylene tends to generate a gel-like product, resulting in poor productivity.
[0011]
[Problems to be solved by the invention]
The present invention has been made to solve the problem of the materials associated with the easy-peel type medical multi-chamber container as described above.
[0012]
[Means for Solving the Problems]
The present invention relates to a crystalline polypropylene random copolymer (A) having a flexural modulus of 6000 to 9000 kg / cm 2 mainly composed of an isotactic crystalline homopolymer and a density 0 which is an ethylene-α-olefin copolymer elastomer. A pharmaceutical liquid container having a polymer composition of 879 to 0.90 g / cm 3 of ethylene-butene-1 copolymer (B) as an inner wall surface, the pharmaceutical liquid container being a part of the opposing inner wall surface It is a medical multi-chamber container which is divided into a plurality of storage chambers by a breakable weak seal provided in the container.
[0013]
In the present invention, the polypropylene-based polymer (hereinafter referred to as PP) (A) is an ordinary stereoregular polypropylene, that is, an isotactic or syndiotactic crystalline homopolymer, or a crystalline copolymer mainly composed of these. However, copolymers, particularly random copolymers, are advantageous in terms of transparency and flexibility (low flexural modulus).
[0014]
The comonomer is preferably an α-olefin having 2 to 12 carbon atoms such as ethylene, butene-1, pentene-1, hexene-1, octene-1, decene-1, dodecene-1, 4-methylpentene-1. The amount of comonomer is about 5 to 40 mol%, more preferably about 8 to 35 mol%.
[0015]
Here, the flexural modulus of PP according to JISK7203 is preferably 10,000 kg / cm 2 or less. When the flexural modulus exceeds 10,000 kg / cm 2 , the rigidity of the polymer composition with the ethylene-α-olefin copolymer (B) is inevitably high, and a ventilation needle is characteristic of a plastic infusion container. This is because the so-called self-drainage, which is drained even without the water, is likely to be impaired. A preferred flexural modulus is 9,000 kg / cm 2 or less, more preferably 8,000 kg / cm 2 or less.
[0016]
In view of heat resistance, PP preferably has a Vicat softening point of 100 ° C. or higher according to JISK7206.
[0017]
And when considering the moldability and the mechanical properties of the molded product (container sheet), the MFR (melt flow rate) at a temperature of 230 ° C. and a load of 2,160 g is 0.3 to 20, more preferably 0.5 to 10. Things are good.
[0018]
Next, in the present invention, an ethylene-α-olefin copolymer elastomer (hereinafter referred to as TPE) (B) is an amorphous or copolymer of ethylene and α-olefins such as propylene, butene-1, and hexene-1. It means a low crystalline soft polymer (elastomer) having a density of 0.90 g / cm 3 or less, a Vicat softening point of 50 to 70 ° C. or less, and an ethylene content of about 25 to 75% by weight.
[0019]
TPE (B) is appropriately compatible with the above PP (A) to form a micro-layer separation structure and develop easy peel properties. Moreover, it has the function of making it flexible while maintaining the transparency of PP (A).
[0020]
In consideration of moldability and mechanical properties of the molded product, the TPE should have an MFR at a temperature of 230 ° C. and a load of 2,160 g of 0.5 to 15, more preferably about 1 to 10.
[0021]
The inner wall surface of the medical multi-chamber container of the present invention is the polymer composition of (A) and (B) as shown at the beginning. Generally, the polymer composition is ( The weight ratio of A) to (B) is 50:50 to 90:10, more preferably 65:35 to 85:15. Within this range, the polymer composition tends to have good easy peel properties.
[0022]
It should be noted that if the amount of (A) is large, the rigidity becomes high and the flexibility of the container is lowered, and if the amount of (A) is small, the heat resistance of the polymer composition tends to be lowered.
[0023]
Further, the medical multi-chamber container of the present invention is a polymer composition in which the inner wall surface is (A) and (B),
(1) A case where the polymer composition sheet of (A) and (B) is alone,
(2) A multilayer sheet in which the polymer composition of (A) and (B) is an inner layer (inner wall surface of a container) and another polymer (or other polymer composition) is an outer layer or an intermediate layer. is there.
[0024]
In (2), other polymers (or other polymer compositions) are used depending on the required performance such as gas barrier properties such as water vapor and oxygen of the container, transparency, flexibility, heat resistance and strength. Preferred examples are as follows.
[0025]
(A) A wire having a density of 0.91 to 0.930 g / cm 3 using α-olefins such as butene-1, pentene-1, hexene-1, octene-1, 4-methylpentene-1 as a copolymerization component. Density polyethylene.
[0026]
(B) Crystalline polypropylene or a crystalline polypropylene copolymer containing the same as a main component. However, since these generally have high rigidity, they are preferably used as thin layers.
[0027]
(C) A polymer composition of (b) and amorphous polypropylene (atactic polypropylene), polystyrene-ethylenebutylene copolymer-polystyrene block copolymer or polystyrene-ethylenepropylene copolymer-polystyrene block copolymer.
[0028]
The thickness of the sheet forming the medical multi-chamber container of the present invention is 0.2 to 0.6 mm as a whole, more preferably 0.25 to 0.45 mm. In the case of multiple layers (in the case of (2) above) ), The polymer composition layer of (A) and (B) is 0.01 mm or more, preferably 0.02 mm or more.
[0029]
The multi-chamber container of the present invention is usually produced by a known method. That is, it is extruded through a single-layer or multi-layer T die or a circular die (melting temperature is 160 to 230 ° C., more preferably 170 to 210 ° C.), and the obtained flat sheet, tubular sheet, parison For example, thermoforming, blowing, stretching (non-stretching is better in consideration of heat sealability), cutting, fusing, and the like may be used as appropriate to be processed into a predetermined shape and form.
[0030]
The most important point in the production of the multi-chamber container is the heat sealing process. That is,
(1) Partition between multiple storage chambers (The seal of the partition wall is difficult to break during manufacturing or transportation, and seal strength that can be easily broken by hand, jig, etc. when used (mixed)) (Generally 180 ° peel strength is about 0.5 to 1.3 kg / 15 mm)
(2) The seal at the part in contact with the outside world (peripheral seal) is such that it cannot be easily broken by the force applied during normal transportation and use (180 ° peel strength is 1.5 kg / 15 mm or more, more preferably 2 kg / Therefore, it is important to control the conditions of the partition seal and the peripheral seal.
[0031]
In the case of the container of the present invention, the partition seal has a temperature of 100 to 150 ° C., a pressure of 1 to 4 kg / cm 2 , a time of 0.2 to 5 seconds, a seal width of 2 to 10 mm, and a peripheral seal of a temperature of 120 to 200 ° C. and a pressure of 2 Usually, it is performed in a range of ˜5 kg / cm 2 , time of 0.2 to 10 seconds, and seal width of 5 mm or more.
[0032]
The number of storage chambers is generally 2-4.
[0033]
In addition, the polymer composition of (A) and (B) can be prepared by using a commonly known uniaxial or biaxial melt mixing extruder or static melt mixer. The melting temperature during mixing is preferably in the range of 160 to 220 ° C.
[0034]
It should be noted that a styrene-based elastomer or an olefin-based elastomer may be further added to the polymer composition of (A) and (B) without departing from the spirit of the present invention.
[0035]
Moreover, in order to prevent blocking between sheets, the inner surface and outer surface of a container may be roughened, and an antiblocking agent and a slip agent may be added.
[0036]
The multi-chamber container of the present invention is effective for a combination of drugs that easily change in quality, such as a combination of an amino acid solution and a glucose solution, and can be applied not only to infusion but also to the blood field.
[0037]
【Example】
EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. (Examples 1-4, Comparative Example 1)
1. Experimental method (1) Preparation of raw material polymer: Table 1 shows the raw material polymers used.
[0038]
[Table 1]
Figure 0003973703
[0039]
(2) Preparation of polymer composition: PP (A 1 , A 2 ), TPE (B 1 , B 2 ) and amorphous polypropylene in Table 1 are used as raw materials, and a predetermined thickness is determined using a 45 mmφ biaxial melt kneading extruder. The pellet-like polymer composition shown in Table 2 was obtained by kneading in the temperature range of 150 to 180 ° C. and extruding the extruded strand with water, cutting and drying.
[0040]
[Table 2]
Figure 0003973703
[0041]
(3) Production of sheet: A tubular sheet was extruded at 180 to 200 ° C. from a single layer or multilayer circular die (inflation die), cooled with a cold water ring, and then 0.28 mm thick and 200 mm folded diameter. The sheet was wound up at a speed of 5 m / min.
[0042]
(4) Production of multi-chamber container: The sheet obtained in (3) is cut into a length of 300 mm, the width of the central part is 5 mm, the temperature is 110 ° C. (but 130 ° C. in Comparative Example 1), the pressure is 2 kg / cm 2 , the time After heat-sealing under conditions of 5 seconds, an aqueous solution containing 3 wt% amino acid in one chamber and 400 ml each of an aqueous solution containing 15 wt% glucose in one chamber, 10 mm in width at both ends and a temperature of 160 ° C. (however, Comparative Example 1 is 180 ° C), a pressure of 4 kg / cm 2 , and a time of 5 seconds, heat sealing was performed to prepare a multi-chamber container containing two chemical solutions.
[0043]
(5) High-pressure steam sterilization: Place the container (4) in a retort type high-pressure steam sterilizer and sterilize in a nitrogen atmosphere at a temperature of 110 ° C., a gauge pressure of 1.8 kg / cm 2 for 30 minutes, and reach room temperature. Cooled down.
[0044]
(6) Evaluation of the transparency of the container: After leaving the container of (5) in a nitrogen atmosphere for 48 hours, a part of the container sheet was cut out, and the water transmittance at a wavelength of 450 nm was measured using a Shimadzu double beam self-recording spectrophotometer. Measured with UV-300 and used as a measure of transparency.
[0045]
(7) Evaluation of flexibility of container: The sheet of the container of (5) was cut into a dumbbell shape, and the tensile elastic modulus was measured according to JISK7113 to obtain a measure of flexibility.
[0046]
(8) Measurement of seal strength: The seal part at the center part (partition part) and end part (peripheral part) of the container of (5) was cut out, and the 180 ° peel strength was measured at a speed of 300 mm / min (in Table 3). Is a value converted to a width of 15 mm).
[0047]
(9) Evaluation of breakability (communicability) of the partition part of the container: Is the seal of the partition part broken to the extent that the sheet of (5) is placed on a desk and one storage chamber side is pressed by hand? (No more than 5 tests for each case).
[0048]
(10) Heavy metal and eluate test: The sheet obtained in (3) was tested according to the Japanese Pharmacopoeia General Test Method “Test Method for Plastic Containers for Infusions”.
[0049]
2. Experimental results (see Table 3)
(1) Preparation of polymer composition and production of sheet: All were smooth, and foreign matter, foaming, blocking, etc. were not observed, and polymer composition pellets and sheets rich in uniformity were obtained in any case.
[0050]
(2) Results of heavy metal and eluate test: It was confirmed that heavy metals and eluate conform to the “Method for testing plastic containers for infusion” of the Japanese Pharmacopoeia in any composition.
[0051]
(3) Transparency and flexibility: Table 3 shows the composition of the sheet and the transparency (water permeability), flexibility (tensile modulus) and seal strength after high-pressure steam sterilization.
[0052]
It can be seen that any container using the polymer composition in the present invention is excellent in transparency and flexibility. On the other hand, it is clear that transparency and flexibility are inferior even when ordinary polyethylene is combined with PP.
[0053]
[Table 3]
Figure 0003973703
[0054]
(4) Breakability (community) of the partition part of the container: All were good (including comparative examples) and could be easily communicated (the seal strength in Table 3 also supports this).
[0055]
【The invention's effect】
As described in detail above, the medical multi-chamber container of the present invention skillfully utilizes appropriate compatibility between the polypropylene polymer (A) and the ethylene-α-olefin copolymer elastomer (B). It is expected to contribute greatly to the medical field because it not only fulfills its performance, but also exhibits transparency and flexibility and is excellent in productivity.

Claims (2)

アイソタクチックタイプの結晶性ホモポリマーを主成分とする曲げ弾性率が6000〜9000kg/cm2の結晶性ポリプロピレンランダムコポリマー(A)とエチレン−α−オレフィンコポリマー系エラストマーである密度0.879〜0.90g/cm3 のエチレン−ブテン−1コポリマー(B)との重合体組成物を内壁面とする医薬液容器であって、該医薬液容器は、相対する内壁面の一部に設けられた破断可能な弱シールによって複数の収容室に区画されていることを特徴とする医療用複室容器。Density flexural modulus as the main component isotactic type of the crystalline homopolymer is crystalline polypropylene random copolymer (A) and the ethylene -α- olefin copolymer elastomers 6000~9000kg / cm 2 0.879~0 A pharmaceutical liquid container having a polymer composition with 90 g / cm 3 of ethylene-butene-1 copolymer (B) as an inner wall surface, the pharmaceutical liquid container being provided on a part of the opposing inner wall surface A medical multi-chamber container that is divided into a plurality of storage chambers by a breakable weak seal. 前記重合体組成物における前記(A)と前記(B)との重量比が、65:35〜85:15である請求項1に記載の医療用複室容器。  The medical multi-chamber container according to claim 1, wherein a weight ratio of (A) to (B) in the polymer composition is 65:35 to 85:15.
JP27219094A 1994-11-07 1994-11-07 Medical multi-chamber container Expired - Fee Related JP3973703B2 (en)

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HUP9904598A3 (en) * 1996-12-23 2001-03-28 Novo Nordisk As A medicament container of polymer of linear olefin for storing a liquid medicament
DE60035473T2 (en) 1999-12-08 2008-03-13 Nipro Corp. Easily removable film and medical packaging container

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JP2675075B2 (en) * 1988-06-10 1997-11-12 株式会社新素材総合研究所 Container with contents
JPH0734820B2 (en) * 1990-12-21 1995-04-19 旭化成工業株式会社 Medical equipment
JP2937565B2 (en) * 1991-07-26 1999-08-23 川澄化学工業株式会社 Infusion container
JPH06169972A (en) * 1992-12-09 1994-06-21 Terumo Corp Base material for polyolefin medical care container
JPH05317385A (en) * 1992-05-27 1993-12-03 Terumo Corp Base material for medical container
JPH06169974A (en) * 1992-12-09 1994-06-21 Terumo Corp Base material for polyolefin medical care container
TW294632B (en) * 1993-02-05 1997-01-01 Otsuka Pharma Factory Inc
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