JP5901876B2 - 生理活性コーティングを備える医療装置の電子ビーム滅菌 - Google Patents
生理活性コーティングを備える医療装置の電子ビーム滅菌 Download PDFInfo
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- JP5901876B2 JP5901876B2 JP2010254523A JP2010254523A JP5901876B2 JP 5901876 B2 JP5901876 B2 JP 5901876B2 JP 2010254523 A JP2010254523 A JP 2010254523A JP 2010254523 A JP2010254523 A JP 2010254523A JP 5901876 B2 JP5901876 B2 JP 5901876B2
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Description
数々の金属材料及び高分子材料が、移植可能な医療装置の製作及び移植可能な医療装置のコーティングの製作に使用されてきた。同じ又は異なる組成物の表面改質及びコーティングは、移植可能な医療装置の生体適合性、血液適合性、及び機能性を更に改善するために頻繁に使用される。これらの装置の表面改質又はコーティングは、典型的に、完了すべきいくつかのプロセス工程を要求する。これらのプロセスのそれぞれ及び表面コーティングによって改良された基材は、患者に使用する製品の滅菌を確実にするためにいくつかの最終滅菌のやり方を要求する。現在、地金装置に利用されている滅菌プロセスは、コーティングされた装置に利用されたときに、コーティング材料がこれらの従来の滅菌方法と適合性がない場合があるために、例えば、低いコーティング安定性及び機能のような潜在的欠点を有する場合がある。
図1に図示した設計の電気研磨されたコバルトクロムステントを、表面結合されたヘパリンでコーティングした。ヘパリンコーティングは、結合層のような一連の中間層を介してステント表面に共有結合される。最終ヘパリンコーティングを水で繰り返し洗い、このコーティングは、約13μg/cm2の一定の最終ヘパリン表面密度を有する。ヘパリン表面の活性は、競合抗トロンビンIIIバインディングアッセイで約65ピコモル/cm2、及び修正USP FXa阻害アッセイで0.9ヘパリンユニティ/ステントと測定された。
この研究では、ヘパリンコーティングされたステントを、薬剤溶出ステントの製造に使用される薬剤充填プロセスの実際のプロセス条件を真似た、6サイクルのDMSO曝露に曝した。それぞれの曝露後に、ステント表面のヘパリンコーティングと混合した溶剤DMSOを、室温か55℃のいずれかで1時間後に室温か55℃のいずれかで24時間焼なましするような条件の組み合わせで除去した。これらの長い溶媒処理及び除去プロセスの後、ヘパリンコーティングを有するステントを乾燥剤と共に真空パッケージし、25KGy照射量の電子ビームプロセスで滅菌した。多様な条件を経るステントのヘパリン活性を、標準AT III摂取アッセイで決定した。
(1) 生理活性表面を有する医療装置の滅菌方法であって、
乾燥剤を有するパッケージ内に前記医療装置を配置する工程と、
前記パッケージを非反応性ガスで少なくとも1回フラッシングする工程と、
前記パッケージ内に少なくとも1回真空を生成して、残留するガス及び水分を全て除去する工程と、
前記パッケージを封着する工程と、
前記パッケージ及び前記医療装置を、既定期間にかけて既定量レベル及び温度で、電子ビーム照射量に1回以上曝露する工程と、を含む、方法。
(2) 前記装置が、心臓血管内ステント、血管内ステント、及び神経血管内ステント、薬剤溶出心臓血管内ステント、薬剤溶出血管内ステント、及び薬剤溶出神経血管内ステント、血管内グラフト、血管及び静脈ステントグラフト、血管形成バルーン、AVシャント、人工肺、人工心臓膜及び補助装置、AAA装置からなる群から選択される、実施態様1に記載の医療方法。
(3) 前記医療装置が、ステンレススチール、アルミニウム、ニチノール、コバルトクロム、及びチタン、並びにそれらの合金からなる群から選択される材料を含む、実施態様1に記載の方法。
(4) 前記医療装置が、ポリアセタール、ポリウレタン、ポリエステル、ポリテトラフルオロエチレン、ポリエチレン、ポリメチルメタクリレート、ポリヒドロキシエチルメタクリレート、ポリビニルアルコール、ポリプロピレン、ポリメチルペンテン、ポリエーテルケトン、ポリフェニレンオキシド、ポリ塩化ビニル、ポリカーボネート、ポリスルフォン、アクリロニトリル−ブタジエン−スチレン、ポリエーテルイミド、ポリフッ化ビニリデン、並びにこれらのコポリマー及び組み合わせからなる群から選択される材料を追加的に含む、実施態様1に記載の方法。
(5) 前記医療装置が、ポリ乳酸、ポリグリコール酸、ポリ(ラクチド−コ−グリコリド)、ポリカプロラクトン、ポリパラジオキサノン、ポリトリメチレンカーボネート、及びこれらのコポリマー、コラーゲン、エラスチン、キチン、キトサン、サンゴ、ヒアルロン酸、骨、及びこれらの組み合わせからなる群から選択される材料を追加的に含む、実施態様1に記載の方法。
(6) 前記生理活性材料が、未分画ヘパリン、部分的に解重合されたヘパリン、低分子量ヘパリン(LMWH)、及び他の化学的又は生物学的に変性されたヘパリンからなる群から選択される、実施態様1に記載の方法。
(7) 前記電子ビーム照射量が、10KGy〜40KGyの間である、実施態様1に記載の方法。
(8) 前記医療装置が、医薬活性成分を追加的に含有する、実施態様1に記載の方法。
(9) 前記医薬活性成分が、ラパマイシン、パクリタキセル、並びにこれらの誘導体及び類縁体からなる抗増殖剤から選択される、実施態様8に記載の方法。
Claims (9)
- ヘパリンコーティングを有する医療装置の滅菌方法であって、前記ヘパリンコーティングが薬剤充填工程で前記医療装置に適用される、医療装置の滅菌方法であって、
薬剤を前記医療装置に充填する工程と、
乾燥剤を有するパッケージ内に前記医療装置を配置する工程と、
前記パッケージを非反応性ガスで少なくとも1回フラッシングする工程と、
前記パッケージ内に少なくとも1回真空を生成して、残留するガス及び水分を全て除去する工程と、
前記パッケージを封着する工程と、
前記パッケージ及び前記医療装置を、既定期間にかけて既定量レベル及び温度で、1回またはそれ以上の回数の電子ビーム照射に曝露する工程と、を含み、
前記1回またはそれ以上の回数の電子ビーム照射は、前記ヘパリンコーティングの前記薬剤充填工程の間のヘパリン活性損失を逆行させる、
方法。 - 前記医療装置が、心臓血管内ステント、血管内ステント、及び神経血管内ステント、薬剤溶出心臓血管内ステント、薬剤溶出血管内ステント、及び薬剤溶出神経血管内ステント、血管内グラフト、血管及び静脈ステントグラフト、血管形成バルーン、AVシャント、人工肺、人工心臓膜及び補助装置、AAA装置からなる群から選択される、請求項1に記載の医療方法。
- 前記医療装置が、ステンレススチール、アルミニウム、ニチノール、コバルトクロム、及びチタン、並びにそれらの合金からなる群から選択される材料を含む、請求項1に記載の方法。
- 前記医療装置が、ポリアセタール、ポリウレタン、ポリエステル、ポリテトラフルオロエチレン、ポリエチレン、ポリメチルメタクリレート、ポリヒドロキシエチルメタクリレート、ポリビニルアルコール、ポリプロピレン、ポリメチルペンテン、ポリエーテルケトン、ポリフェニレンオキシド、ポリ塩化ビニル、ポリカーボネート、ポリスルフォン、アクリロニトリル−ブタジエン−スチレン、ポリエーテルイミド、ポリフッ化ビニリデン、並びにこれらのコポリマー及び組み合わせからなる群から選択される材料を追加的に含む、請求項1に記載の方法。
- 前記医療装置が、ポリ乳酸、ポリグリコール酸、ポリ(ラクチド−コ−グリコリド)、ポリカプロラクトン、ポリパラジオキサノン、ポリトリメチレンカーボネート、及びこれらのコポリマー、コラーゲン、エラスチン、キチン、キトサン、サンゴ、ヒアルロン酸、骨、及びこれらの組み合わせからなる群から選択される材料を追加的に含む、請求項1に記載の方法。
- 前記ヘパリンが、未分画ヘパリン、部分的に解重合されたヘパリン、低分子量ヘパリン(LMWH)、及び他の化学的又は生物学的に変性されたヘパリンからなる群から選択される、請求項1に記載の方法。
- 前記電子ビーム照射量が、10KGy〜40KGyの間である、請求項1に記載の方法。
- 前記医療装置が、医薬活性成分を追加的に含有する、請求項1に記載の方法。
- 前記医薬活性成分が、ラパマイシン、パクリタキセル、並びにこれらの誘導体及び類縁体からなる抗増殖剤から選択される、請求項8に記載の方法。
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US12/619,118 US8887477B2 (en) | 2009-11-16 | 2009-11-16 | E beam sterilization of medical devices comprising bioactive coating |
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BRPI1012815A2 (pt) | 2013-05-14 |
RU2010146515A (ru) | 2012-05-20 |
US20110113728A1 (en) | 2011-05-19 |
BRPI1012815B1 (pt) | 2019-02-12 |
US8887477B2 (en) | 2014-11-18 |
KR101726199B1 (ko) | 2017-04-12 |
IL208542A (en) | 2014-05-28 |
ES2413655T3 (es) | 2013-07-17 |
MX2010012497A (es) | 2011-05-25 |
KR20110053909A (ko) | 2011-05-24 |
EP2322230B1 (en) | 2013-05-01 |
JP2011104369A (ja) | 2011-06-02 |
CN102058893B (zh) | 2015-09-23 |
IL208542A0 (en) | 2011-02-28 |
RU2591829C2 (ru) | 2016-07-20 |
CN102058893A (zh) | 2011-05-18 |
EP2322230A1 (en) | 2011-05-18 |
AU2010226993B2 (en) | 2015-08-13 |
AU2010226993A1 (en) | 2011-06-02 |
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