JPWO2021009899A1 - 包装済み医療用具 - Google Patents
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Abstract
Description
開口部と、前記開口部の周縁部に外側に延伸して形成されたフランジ部と、を有する容器と、
前記容器の内部に収容された医療用具と、
ガス不透過性フィルムを有し、前記フランジ部に剥離可能に熱融着された蓋部材と、を備え、
前記容器の内部が大気圧に対して負圧とされ、前記医療用具が前記蓋部材により押圧されており、
前記蓋部材の前記フランジ部に対する剥離強度が2〜50N/inである、包装済み医療用具を提供する。
前記容器の内部の圧力は、400〜1013hPaであってもよい。
前記蓋部材は、接着剤又は前記蓋部材を構成する接着層を介してフランジ部に剥離可能に熱融着されていてもよい。
前記接着剤又は前記蓋部材を構成する接着層は、オレフィン系樹脂を含んでもよい。
前記蓋部材は、前記フランジ部から界面剥離又は凝集剥離が可能であってもよい。
前記蓋部材は、前記ガス不透過性フィルムと、前記ガス不透過性フィルムの前記容器側に設けられたガス透過性フィルムと、有していてもよい。
(1)全体構成
まず、図1を参照して本発明の一実施形態に係る包装済み医療用具の全体的な構成について説明する。図1Aは、包装済み医療用具1を示す斜視図である。図1Bは、図1AのX−X線、Y−Y線及びZ−Z線で切断した包装済み医療用具1の矢印Y方向の断面図である。包装済み医療用具1は、図1Aに示すように、開口部21と、開口部21の周縁部に外側に延伸して形成されたフランジ部24と、を有する容器20を備える。さらに、包装済み医療用具1は、容器20の内部に収容された医療用具30と、フランジ部24に剥離可能に熱融着されることにより容器20の開口部21を密封する蓋部材40と、を備える。
次に、図2を参照して容器20について説明する。図2Aは、容器20を示す斜視図である。図2Bは、図2Aにおける矢印Dの方向から見た容器20を示す正面図である。容器20の形状は、開口部21を有していれば特に限定されないが、例えば図2A及びBに示すように、略矩形の底面部22と、底面部22の周囲から上方に向かって延びる側周部23と、側周部23の上端で囲まれた開口部21と、を備える箱形状とすることができる。底面部22の形状は、略矩形の他、多角形、円形、楕円形などの任意の形状でありうる。
次に、再び図1Aを参照し、容器20に収容される医療用具30について説明する。図1Aでは、医療用具30の一例として、医薬品容器などの口部を封止するゴム栓の離脱防止のためにゴム栓に被せるキャップを図示している。医療用具30は上記キャップに限定されるものではなく、例えば、医薬品容器、医薬品容器用ゴム栓、シリンジ、ピストン、注射針、バイアルなど、医療分野で用いられる器具であって容器に収容されうる物を広く包含する。
蓋部材40は、ガス不透過性フィルムを有し、容器20のフランジ部24に剥離可能に熱融着されることで、図1Aに示すように開口部21を密封する。なお、蓋部材40はシート状の部材であり、バキュームバッグなどの袋状の部材ではない。また、図1Aでは蓋部材40が透明材料により形成された場合を図示しているが、蓋部材40の材料は透明でなくてもよく、透明性については特に限定されない。
ガス不透過層は、ガス不透過性フィルムを有する層である。ガス不透過層としては、(A−1)ガス不透過性フィルムのみからなるもの、又は(A−2)ガス不透過性フィルムと他の層とからなるものが好ましい。
まず、ガス不透過層がガス不透過性フィルムのみから形成されている場合について説明する。
次に、ガス不透過層がガス不透過性フィルムと他の層とから形成されている場合について説明する。当該他の層としては、例えば、吸湿層、防湿層、遮光層及び印刷層が挙げられる。
アンカーコート層は、上記(A)ガス不透過層の下面側(容器20側)に設けられる。アンカーコート層は、上記(A)ガス不透過層と下記(C)接着層との間に位置し、ガス不透過層と接着層との間の接着性を高めるために設けられる。アンカーコート層を形成する原料は、ガス不透過層及び接着層の材質に応じて選択されうるが、好ましくはポリエチレン及び二軸延伸ナイロンである。アンカーコート層は、単層構造であってもよく多層構造であってもよい。アンカーコート層は、より好ましくは、ポリエチレンフィルムからなる単層フィルム又はポリエチレンフィルム/二軸延伸ナイロンフィルム/ポリエチレンフィルム/の順に積層された多層フィルムである。
接着層は、上記(B)アンカーコート層の下面側(容器20側)の少なくとも容器20のフランジ部24に対応する部分に設けられる。接着層は、蓋部材40をフランジ部24に剥離可能に熱融着するための易剥離層(イージーピール層)であることが好ましく、次のような公知の易剥離剤(イージーピール剤)により形成することができる。フランジ部24がポリプロピレンにより形成されている場合は、接着層を形成する原料として、エチレン−酢酸ビニル系樹脂、エチレン−アクリル酸系樹脂、ポリプロピレンとポリエチレンとの混合物などを含むオレフィン系樹脂、2液硬化型ウレタン系ドライラミネート接着剤などを使用できる。また、フランジ部24がポリ塩化ビニルにより形成されている場合は、接着層を形成する原料として、エチレン−酢酸ビニル系樹脂、エチレン−アクリル酸系樹脂などのオレフィン系樹脂、ポリスチレンにスチレン−ブタジエンブロック共重合体をブレンドしたもの、塩化ビニル−酢酸ビニル共重合体、2液硬化型ウレタン系ドライラミネート接着剤などを使用できる。さらに、フランジ部24がポリエステルにより形成されている場合は、接着層を形成する原料として、エチレン−酢酸ビニル系樹脂、エチレン−アクリル酸系樹脂などのオレフィン系樹脂、コポリエステル、2液硬化型ウレタン系ドライラミネート接着剤などを使用できる。これらの中でも、接着層は、オレフィン系樹脂を含む易剥離剤により形成されていることが好ましい。また、接着層は、内容物への接着剤の付着防止の観点から、アンカーコート層の下面側(容器20側)のフランジ部24に対応する位置のみに形成されていてもよい。
(1)(A)ポリエチレンテレフタレート/(B)ポリエチレン/(C)ポリエチレン系樹脂
(2)(A)ポリエチレンテレフタレート/(B)ポリエチレン/(C)ポリエチレンとポリエチレンテレフタレートとの混合物を含むオレフィン系樹脂
(3)(A)ポリエチレンテレフタレート/(B)ポリエチレン/(C)ポリプロピレン系樹脂
(4)(A)ポリエチレンテレフタレート/(B)ポリエチレン/(B)二軸延伸ナイロン/(B)ポリエチレン/(C)ポリエチレン系樹脂
ガス透過性フィルムは、滅菌可能なフィルムでガス、水蒸気などの滅菌用の気体類は透過するが菌は不透過のものであり、例えば、高密度ポリエチレン又はその他のポリマーのフィラメントより構成されたものである。滅菌可能なガス透過性フィルムの市販品としては、例えば、デュポン社製のTyvek(登録商標)などが挙げられる。
図1Aに示すように、本実施形態に係る包装済み医療用具1は、容器20の内部に医療用具30を保持する保持部50を備えることが好ましい。保持部50の形状は、医療用具30の種類及び大きさなどに応じて適宜設計されうるものであり、特に限定されないが、図3及び4を参照してその一例を説明する。図3Aは保持部50を示す斜視図、図3Bは保持部50を示す平面図、図3Cは保持部50を示す正面図である。
次に、図5を参照して、本発明の一実施形態に係る包装済み医療用具の製造方法について説明する。図5は、包装済み医療用具の製造方法の一例を示すフローチャートである。本実施形態の製造方法は、開口部及びフランジ部を有する容器の内部に医療用具を収容する収容工程(ステップS11)と、蓋部材をフランジ部に剥離可能に熱融着することにより上記開口部を密封し、且つ、上記容器の内部を大気圧に対して負圧とすることにより上記医療用具が上記蓋部材により押圧された状態とする密封工程(ステップS14)と、を含む。これにより、上述した包装済み医療用具が製造されうる。
[1]開口部と、前記開口部の周縁部に外側に延伸して形成されたフランジ部と、を有する容器と、
前記容器の内部に収容された医療用具と、
ガス不透過性フィルムを有し、前記フランジ部に剥離可能に熱融着された蓋部材と、を備え、
前記容器の内部が大気圧に対して負圧とされ、前記医療用具が前記蓋部材により押圧されており、
前記蓋部材の前記フランジ部に対する剥離強度が2〜50N/inである、包装済み医療用具。
[2]前記容器の内部の圧力は、400〜1013hPaである、上記[1]に記載の包装済み医療用具。
[3]前記蓋部材は、接着剤又は前記蓋部材を構成する接着層を介してフランジ部に剥離可能に熱融着されている、上記[1]又は[2]に記載の包装済み医療用具。
[4]前記接着剤又は前記蓋部材を構成する接着層は、オレフィン系樹脂を含む、上記[1]から[3]のいずれか1つに記載の包装済み医療用具。
[5]前記蓋部材は、前記フランジ部から界面剥離又は凝集剥離が可能である、上記[1]から[4]のいずれか1つに記載の包装済み医療用具。
[6]前記蓋部材は、前記ガス不透過性フィルムと、前記ガス不透過性フィルムの前記容器側に設けられたガス透過性フィルムと、を有する、上記[1]から[5]のいずれか1つに記載の包装済み医療用具。
20 容器
21 開口部
22 底面部
23 側周部
24 フランジ部
25 段差部
26 突起部
30 医療用具
40 蓋部材
50 保持部
51 基板部
52 筒状部
53 係止突起部
54 貫通孔
55 支柱部
56 切欠部
57 連結穴
531 係止爪
Claims (6)
- 開口部と、前記開口部の周縁部に外側に延伸して形成されたフランジ部と、を有する容器と、
前記容器の内部に収容された医療用具と、
ガス不透過性フィルムを有し、前記フランジ部に剥離可能に熱融着された蓋部材と、を備え、
前記容器の内部が大気圧に対して負圧とされ、前記医療用具が前記蓋部材により押圧されており、
前記蓋部材の前記フランジ部に対する剥離強度が2〜50N/inである、包装済み医療用具。 - 前記容器の内部の圧力は、400〜1013hPaである、請求項1に記載の包装済み医療用具。
- 前記蓋部材は、接着剤又は前記蓋部材を構成する接着層を介してフランジ部に剥離可能に熱融着されている、請求項1又は2に記載の包装済み医療用具。
- 前記接着剤又は前記蓋部材を構成する接着層は、オレフィン系樹脂を含む、請求項1から3のいずれか一項に記載の包装済み医療用具。
- 前記蓋部材は、前記フランジ部から界面剥離又は凝集剥離が可能である、請求項1から4のいずれか一項に記載の包装済み医療用具。
- 前記蓋部材は、前記ガス不透過性フィルムと、前記ガス不透過性フィルムの前記容器側に設けられたガス透過性フィルムと、を有する、請求項1から5のいずれか一項に記載の包装済み医療用具。
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IL288489B2 (en) | 2024-02-01 |
WO2021009899A1 (ja) | 2021-01-21 |
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JP7112756B2 (ja) | 2022-08-04 |
US11925490B2 (en) | 2024-03-12 |
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US11547518B2 (en) | 2023-01-10 |
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