JP5291198B2 - マスク - Google Patents
マスク Download PDFInfo
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- JP5291198B2 JP5291198B2 JP2011534085A JP2011534085A JP5291198B2 JP 5291198 B2 JP5291198 B2 JP 5291198B2 JP 2011534085 A JP2011534085 A JP 2011534085A JP 2011534085 A JP2011534085 A JP 2011534085A JP 5291198 B2 JP5291198 B2 JP 5291198B2
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- fine particles
- virus
- mask
- virus inactivating
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Description
第2の実施形態のマスク100は、ウイルス不活化微粒子(以下、第1の無機微粒子とも称す)に加えて、他の微粒子としての第2の無機微粒子がフィルタ部材1上に保持されている。第2の実施形態において、第2の無機微粒子は、第1の無機微粒子とともに、無機微粒子が平面形状または3次元形状に並んだ無機微粒子の集合体を形成している。言い換えれば、第2の実施形態においては、第1の無機微粒子と、第2の無機微粒子とを含む無機微粒子の集合体がフィルタ部材1上に保持されている。なお、第1の実施形態と共通する構成については、同じ符号を付して説明を省略する。
以上、第1および第2の実施形態のマスク100について詳述したが、本発明はこれに限定されるものではなく、他の態様とすることももちろん可能である。例えば、本マスク100の形状は、図1のようなタイプのマスクだけではなく、図3のように熱プレスにて打ち抜いたマスクや、図4のようなガーゼマスクに用いることも可能である。
本発明のマスクの効果を確認する前に、マスク本体10のフィルタ部材1にて保持されるヨウ化白金(II)、ヨウ化パラジウム(II)、ヨウ化銀(I)、ヨウ化銅(I)、およびチオシアン酸銅(I)のいずれかからなるウイルス不活化微粒子のウイルス不活化性について、検討を行った。検討には、一般的にウイルス力価を測定する際に用いられる赤血球凝集(HA)阻害試験法を用いた。対象ウイルスには、MDCK細胞を用いて培養したインフルエンザウイルス(influenza A/北九州/159/93(H3N2)、以下ウイルスと略す)を用いた。
実施例1:
ウイルス不活化性を有するウイルス不活化微粒子として、市販のヨウ化銅(I)粉末(和光純薬工業株式会社製、和光一級)を、乾式粉砕装置ナノジェットマイザー(株式会社アイシンナノテクノロジーズ社製)を用いて、平均粒子径170nmに粉砕した。粉砕したヨウ化銅(I)微粒子をエタノールに2.0質量%加え、さらに、テトラメトキシシラン(信越化学工業株式会社製、KBM−04)を0.4質量%加えた後、ホモジナイザーで5分間プレ分散してスラリーを作製した。ここでいう平均粒子径とは、体積平均粒子径のことをいう。
ウイルス不活化微粒子(第1の無機微粒子)として、市販のチオシアン酸銅(I)粉末(和光純薬工業株式会社製、化学用)100.0gを900.0gエタノールにプレ分散後、ビーズミルにて解砕・分散し、平均粒子径104nmのスラリーを得た。
ウイルス不活化性を有するウイルス不活化微粒子(第1の無機微粒子)として、市販のヨウ化銅(I)粉末(和光純薬工業株式会社製、和光一級)40.0gと、第2の無機微粒子として、酸化ジルコニウム粒子(日本電工株式会社製)60.0gを、900.0gのエタノールにプレ分散後、ビーズミルにて解砕・分散し、平均粒子径205nmのヨウ化銅(I)と、平均粒子径37nmの酸化ジルコニウムとのそれぞれの微粒子を含むスラリーを得た。得られたスラリーは固形分濃度が1質量%になるようにエタノールを加えて調整した。なお、ここでいう平均粒子径とは、体積平均粒子径のことをいう。
ウイルス不活化性を有するウイルス不活化微粒子(第1の無機微粒子)としての市販のヨウ化銀(I)粉末(和光純薬工業株式会社製、化学用)40.0gと、第2の無機微粒子として、不飽和結合部を有するシランモノマーであるメタクリロキシプロピルトリメトキシシラン(信越化学工業株式会社製、KBM−503)を通常の方法により脱水縮合させ表面に共有結合させた酸化ジルコニウム粒子(日本電工株式会社製)60.0gを、900.0gのメタノールにプレ分散後、ビーズミルにて解砕・分散し、平均粒子径124.8nmのヨウ化銀(I)と、平均粒子径15.1nmの酸化ジルコニウムとのそれぞれの微粒子を含むスラリーを得た。得られたスラリーは固形分濃度が3質量%になるようにエタノールを加えて調整した。なお、ここでいう平均粒子径とは、体積平均粒子径のことをいう。
ウイルス不活化微粒子(第1の無機微粒子)として、市販のヨウ化銅(I)粉末(和光純薬工業株式会社製、和光一級)40.0gと、第2の無機微粒子として、不飽和結合部を有するシランモノマーであるメタクリロキシプロピルトリメトキシシラン(信越化学工業株式会社製、KBM−503)を通常の方法により脱水縮合させ表面に共有結合させた酸化ジルコニウム粒子(日本電工株式会社製、PCS)60.0gを、900.0gのエタノールにプレ分散後、ビーズミルにて解砕・分散し、平均粒子径60nmのヨウ化銅(I)と、平均粒子径37nmのメタクリロキシプロピルトリメトキシシランで被覆した酸化ジルコニウムとのそれぞれの微粒子を含むスラリーを得た。得られたスラリーは固形分濃度が1質量%になるようにエタノールを加えて調整した。なお、ここでいう平均粒子径とは、体積平均粒子径のことをいう。
実施例5で用いたスラリーに、テトラメトキシシラン(信越化学工業株式会社製、KBM−04)を0.3質量%加えた以外は、実施例5と同様の条件でウイルス不活化作用を有するフィルタ部材1を得た。
実施例6で用いたウイルス不活化微粒子を加えない以外は、実施例6と同様の条件で作成し、比較例1のフィルタ部材を得た。
18g/m2のレーヨン不織布(クラレクラフレックス株式会社製)のみを比較例2のフィルタ部材とした。
フィルタ部材のウイルス不活化性の測定は、対象ウイルスとして、インフルエンザウイルスA/yamagata/1/08(H1N1)、A /kitakyushu/159/93(H3N2)、B/Bangkok/163/90、およびネコカリシウイルスF9株の4種類を用いた。実施例1、3、5、および6と比較例1および2の各サンプル(5cm×5cm)を未処理不織布3枚に重ねてピンセットで挟み、ウイルス原液250μLを、市販の薬液投与、経鼻・経口投与器具(あ〜んシュット・アトマイザー、株式会社キートロン社製/液体を、飛沫相当サイズの液滴の状態で噴射できる器具)に入れて、10cm離れた不織布に向かってウイルス液全量を吹き付けた。ウイルス液を吹き付けた各サンプルは滅菌したプラスチックシャーレに入れた。60分間感作させた後、ブイヨン液1mLを添加しウイルスを洗い出した。その後、各反応サンプルが10−2〜10−5になるまでMEM希釈液にて希釈を行い(10倍段階希釈)、MDCK細胞にサンプル液100μLを接種した。90分間のウイルス吸着後、0.7%寒天培地を重層し、48時間、34℃、5%CO2インキュベータにて培養後、ホルマリン固定、メチレンブルー染色を行い形成されたプラック数をカウントして、ウイルスの感染価(PFU/0.1ml, Log10);(PFU:plaque-forming units)を算出し、コントロールにおけるウイルス感染価と比較した。
ウイルスコントロールは、試験不織布の代わりに5cm角のプラスチックフィルムを用いた。
フィルタ部材のウイルス不活化性の測定は、対象ウイルスとして、インフルエンザウイルスA /kitakyushu/159/93(H3N2)原液、およびネコカリシウイルスF9株原液に、唾液中に含まれるタンパク量を想定したBSA(ウシ血清アルブミン(bovine serum albumin)を0.5質量%になるように加えた。各サンプル(5cm×5cm)を未処理不織布3枚に重ねてピンセットで挟み、ウイルス原液250μLを、市販の薬液投与、経鼻・経口投与器具(あ〜んシュット・アトマイザー、株式会社キートロン社製/液体を、飛沫相当サイズの液滴の状態で噴射できる器具)に入れて、10cm離れた不織布に向かってウイルス液全量を吹き付けた。ウイルス液を吹き付けた各サンプルは滅菌したプラスチックシャーレに入れた。60分間感作させた後、ブイヨン液1mLを添加しウイルスを洗い出した。その後、各反応サンプルが10−2〜10−5になるまでMEM希釈液にて希釈を行い(10倍段階希釈)、MDCK細胞にサンプル液100μLを接種した。90分間のウイルス吸着後、0.7%寒天培地を重層し、48時間、34℃、5%CO2インキュベータにて培養後、ホルマリン固定、メチレンブルー染色を行い形成されたプラック数をカウントして、ウイルスの感染価(PFU/0.1ml, Log10);(PFU:plaque-forming units)を算出し、コントロールにおけるウイルス感染価と比較した。
ウイルスコントロールは、試験不織布の代わりに5cm角のプラスチックフィルムを用いた。
10:マスク本体
1:フィルタ部材
2:ゴム紐
3:帯状ワイヤ
4:プリーツ
Claims (6)
- 付着したウイルスを不活化できるマスクであって、
装着用部材を有するマスク本体と、
前記マスク本体に保持される、ヨウ化白金(II)、ヨウ化パラジウム(II)、ヨウ化銀(I)、ヨウ化銅(I)、およびチオシアン酸銅(I)からなる群から少なくとも1種選択される、ウイルス不活化性を有するウイルス不活化微粒子と、を備え、前記ウイルス不活化微粒子は、シランモノマー及び/又はシランモノマーの重合体を少なくとも介して前記マスク本体に固定されることを特徴とするマスク。 - 前記ウイルス不活化微粒子は、シランモノマー及び/又はシランモノマーの重合体との化学結合によって前記マスク本体に固定される他の無機微粒子の群を介して、前記マスク本体に保持されることを特徴とする請求項1に記載のマスク。
- 前記マスク本体が、前記マスク本体の厚み方向に沿って積層される通気性を備える複数のフィルタ部材により構成されるとともに、前記ウイルス不活化微粒子は、前記マスク本体を構成する前記複数のフィルタ部材のうち、少なくとも1つに保持されていることを特徴とする請求項1または2に記載のマスク。
- 前記ウイルス不活化微粒子が、マスク装着時における最も内側に位置するフィルタ部材に少なくとも保持されていることを特徴とする請求項3に記載のマスク。
- 前記ウイルス不活化微粒子が、マスク装着時における最も外側に位置するフィルタ部材に少なくとも保持されていることを特徴とする請求項3または4に記載のマスク。
- 前記ウイルス不活化微粒子の平均粒径が、1nm以上500nm未満であることを特徴とする請求項1から5のいずれか1つに記載のマスク。
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BR112012006914A2 (pt) | 2020-10-06 |
CA2776031C (en) | 2018-09-18 |
US20120192876A1 (en) | 2012-08-02 |
EP2484409A4 (en) | 2016-04-27 |
CA2776031A1 (en) | 2011-04-07 |
KR101772716B1 (ko) | 2017-08-29 |
EP2484409B1 (en) | 2018-02-14 |
KR20120096477A (ko) | 2012-08-30 |
BR112012006914B1 (pt) | 2021-06-01 |
CN102548619A (zh) | 2012-07-04 |
AU2010302079B2 (en) | 2015-04-02 |
AU2010302079A1 (en) | 2012-04-12 |
RU2012115650A (ru) | 2013-11-10 |
EP2484409A1 (en) | 2012-08-08 |
WO2011040035A1 (ja) | 2011-04-07 |
RU2549065C2 (ru) | 2015-04-20 |
US10744351B2 (en) | 2020-08-18 |
JPWO2011040035A1 (ja) | 2013-02-21 |
IN2012DN02357A (ja) | 2015-08-21 |
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