JP6158296B2 - 超親水性構造体 - Google Patents
超親水性構造体 Download PDFInfo
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- JP6158296B2 JP6158296B2 JP2015503317A JP2015503317A JP6158296B2 JP 6158296 B2 JP6158296 B2 JP 6158296B2 JP 2015503317 A JP2015503317 A JP 2015503317A JP 2015503317 A JP2015503317 A JP 2015503317A JP 6158296 B2 JP6158296 B2 JP 6158296B2
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- film
- polydioxanone
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- Prior art date
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Landscapes
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- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Materials Engineering (AREA)
- Surgery (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Materials For Medical Uses (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- External Artificial Organs (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
i)融解可能な重合体が軟化フィルムとして成形型に提供される。
ii)成形型がポリカーボネートを含み、重合体がポリジオキサノンであり、溶媒がジクロロメタンである。
iii)ステップb)が第1段階及び第2段階で行われ、第2段階がより大きな圧力で行われる。
両側に柱状物様構造体を有する厚さ100μmのポリジオキサノンフィルムを調製した。ポリジオキサノンフィルムを、ポリカーボネートフィルタ材料の厚さ20μmの2つのシートの間で、熱及び圧力下で圧縮した。このフィルタ材料は微視的な(0.8μm)穴を所有する。ポリジオキサノンフィルムは融解し、これらの穴に流入した。プロセッシング後、このシートを焼きなました。このポリカーボネート膜フィルタをその後、ジクロロメタン槽で溶解した。使用した膜フィルタ(Millipore Corporation of Billerica,MA,USAから入手可能な0.8μm ATTP、カタログ番号ATTP14250、ロット番号R9SN70958)は、2つの明確な側面を所有した。片方の側面は輝く外観を有し、一方、他方の側面はよりくすんでいた。圧縮成形のための積層体を以下のように構築した。
a.厚さ65〜70μmのポリイミドフィルム(DuPont,Wilmington,DEにより商標名KAPTONとして販売される)のセグメントをテーブル上に置いた。
b.15.2cm(6インチ)の磨いた正方形金属プレート(厚さ0.8mm)(輝く側を上にして)を、このポリイミドフィルム上に置いた。
c.ポリイミドフィルムのセグメントを、この15.2cm(6インチ)プレート上に置いた。
d.中心に10.1cm×10.1cm(4インチ×4インチ)の空洞を有する15.2cm×15.2cm(6インチ×6インチ)×80μmのスチールシムを、このフィルム上に置いた。
e.膜フィルタを、このシム空洞内に嵌合するように切断し、上記ポリイミドフィルム上に置いた(くすんだ側を上にして)。
f.厚さ25μmの1片のポリジオキサノンフィルムを、このシム空洞内に嵌合するように切断した。サンプルをこの膜上に置いた。
g.別の膜フィルタ(厚さ約20μm)を、シム空洞内に嵌合するように切断し、このポリジオキサノンフィルム上に置いた(くすんだ側を下にして)。
h.ポリイミドフィルムのセグメントを、頂部の膜上に置いた。
i.15.2cm(6インチ)の磨いた正方形金属プレート(厚さ0.8mm)(輝く側を下にして)を、このポリイミドフィルム上に置いた。
j.ポリイミドフィルムの別のセグメントを、このスチールプレート上に置いた。
a.頂部及び底部圧盤を220℃(428°F)まで予熱した。
b.サンプルを、任意の加圧前に真空下で300秒間予熱した。
c.サンプルを68948kPa(10,000psi)で300秒間圧縮した。
d.温度を21℃(70°F)まで低下させ、一方、68948kPa(10,000psi)の加圧を維持した。
e.圧縮力を解放し、真空を一掃した。
f.サンプルを真空プレスから除去した。
0.6、1、及び3μmの直径及び20μmの高さのPDO柱状物を、市販のトラックエッチングしたポリカーボネート膜を成形型として、及びナノインプリントプロセスを用いて、本質的に実施例1で示される方法により、PDOフィルム上に製作した。0.6及び1μmの直径及び4.5cmの円直径の穴を有し、20μmの厚さを有する膜は、Whatman,Florham Park,NJ.から得た。3μmの直径及び4.5cmの円直径の穴を有し、20μmの厚さを有する膜は、Millipore Corporation of Billerica,MA,USAから得た。これらの膜を、Ethicon,Inc.,Somerville,NJ,USAから得た厚さ0.3mmの溶媒抵抗性PDO重合体フィルムをインプリントするための型板として使用した。PDOフィルムを高温及び高圧(120℃、6000kPa(60バール))下で5分間、ポリカーボネート膜型板にプレスし、PDOを融解した。インプリントしたPC膜を有するPDOフィルムを、2つの金属プレートの間に置き、70℃で3時間、焼きなました。重合体構造体を、ポリカーボネート膜をジクロロメタン中で溶解することにより、脱成形及び解放した。フィルムを2つの連続したジクロロメタン槽中に1洗浄当たり5分間浸漬し、その後、空気乾燥させた。
(1) ポリジオキサノンフィルムであって、その少なくとも片側に実質的に円柱状のポリジオキサノン柱状物を備え、前記柱状物が約0.2μm〜約3μmの直径及び前記フィルムの表面から約2μm〜約20μmの高さを有する、ポリジオキサノンフィルム。
(2) 前記柱状物が、未処理のポリジオキサノン柱状物と比較して、前記ポリジオキサノン柱状物の酸素含有量を増大させるように酸素プラズマで処理される、実施態様1に記載のポリジオキサノンフィルム。
(3) 前記ポリジオキサノン柱状物が、約0.6μm〜約1μmの直径、前記フィルムの表面から約20μmの高さを有し、かつ約10°未満の静的水接触角(static water contact angle)を有する超親水性を示す、実施態様1に記載のポリジオキサノンフィルム。
(4) 前記ポリジオキサノン柱状物が、前記フィルムの表面から約20μmの高さを有し、かつ約10°未満の静的水接触角を有する超親水性を示す、実施態様2に記載のポリジオキサノンフィルム。
(5) 約2.5μg/cm2〜約6.0μg/cm2の、前記フィルム表面のタンパク質吸着能を有する、実施態様1に記載のポリジオキサノンフィルム。
(7) タンパク質を吸着するためのプロセスであって、タンパク質含有溶液を、ポリジオキサノンフィルムに暴露することを含み、前記ポリジオキサノンフィルムが、その少なくとも片側に実質的に円柱状のポリジオキサノン柱状物を備え、前記柱状物が約0.2μm〜約3μmの直径及び前記フィルムの表面から約2μm〜約20μmの高さを有する、プロセス。
(8) 前記柱状物が、未処理のポリジオキサノン柱状物と比較して、前記ポリジオキサノン柱状物の酸素含有量を増大させるように酸素プラズマで処理される、実施態様7に記載のプロセス。
(9) 前記ポリジオキサノン柱状物が、約0.6μm〜約1μmの直径、前記フィルムの表面から約20μmの高さを有し、かつ約10°未満の静的水接触角を有する超親水性を示す、実施態様7に記載のプロセス。
(10) 前記ポリジオキサノン柱状物が、前記フィルムの表面から約20μmの高さを有し、かつ約10°未満の静的水接触角を有する超親水性を示す、実施態様8に記載のプロセス。
(12) 前記ポリジオキサノンフィルムが、約4.0μg/cm2〜約6.0μg/cm2の、該フィルム表面のタンパク質吸着能を有する、実施態様11に記載のプロセス。
(13) ポリジオキサノンフィルムを備える医療装置であって、前記ポリジオキサノンフィルムが、その少なくとも片側に実質的に円柱状のポリジオキサノン柱状物を備え、前記柱状物が約0.2μm〜約3μmの直径及び前記フィルムの表面から最大約2μm〜約20μmの高さを有する、医療装置。
(14) 前記フィルムを有しないインプラントと比較して、改善された生体適合性を有する、実施態様13に記載の医療装置。
(15) 平坦なポリジオキサノンフィルムと比較して、増大したタンパク質吸着能を有する、実施態様13に記載の医療装置。
Claims (14)
- ポリジオキサノンフィルムであって、その少なくとも片側に実質的に円柱状の酸素プラズマ処理されたポリジオキサノン柱状物を備え、前記柱状物が1μmより大きく3μm以下の直径及び前記フィルムの表面から約2μm〜約20μmの高さを有する、ポリジオキサノンフィルム。
- 前記柱状物が、未処理のポリジオキサノン柱状物と比較して、増大した酸素含有量を有する、請求項1に記載のポリジオキサノンフィルム。
- 前記ポリジオキサノン柱状物が、前記フィルムの表面から約20μmの高さを有し、かつ約10°未満の静的水接触角を有する超親水性を示す、請求項1に記載のポリジオキサノンフィルム。
- 約2.5μg/cm2〜約6.0μg/cm2の、前記フィルム表面のタンパク質吸着能を有する、請求項1に記載のポリジオキサノンフィルム。
- 約4.0μg/cm2〜約6.0μg/cm2の、前記フィルム表面のタンパク質吸着能を有する、請求項4に記載のポリジオキサノンフィルム。
- タンパク質を吸着するためのプロセスであって、タンパク質含有溶液を、ポリジオキサノンフィルムに暴露することを含み、前記ポリジオキサノンフィルムが、その少なくとも片側に実質的に円柱状のポリジオキサノン柱状物を備え、前記柱状物が約0.2μm〜約3μmの直径及び前記フィルムの表面から約2μm〜約20μmの高さを有する、プロセス。
- 前記柱状物が、未処理のポリジオキサノン柱状物と比較して、前記ポリジオキサノン柱状物の酸素含有量を増大させるように酸素プラズマで処理される、請求項6に記載のプロセス。
- 前記ポリジオキサノン柱状物が、約0.6μm〜約1μmの直径、前記フィルムの表面から約20μmの高さを有し、かつ約10°未満の静的水接触角を有する超親水性を示す、請求項6に記載のプロセス。
- 前記ポリジオキサノン柱状物が、前記フィルムの表面から約20μmの高さを有し、かつ約10°未満の静的水接触角を有する超親水性を示す、請求項7に記載のプロセス。
- 前記ポリジオキサノンフィルムが、約2.5μg/cm2〜約6.0μg/cm2の、該フィルム表面のタンパク質吸着能を有する、請求項6に記載のプロセス。
- 前記ポリジオキサノンフィルムが、約4.0μg/cm2〜約6.0μg/cm2の、該フィルム表面のタンパク質吸着能を有する、請求項10に記載のプロセス。
- ポリジオキサノンフィルムを備える医療装置であって、前記ポリジオキサノンフィルムが、その少なくとも片側に実質的に円柱状の酸素プラズマ処理されたポリジオキサノン柱状物を備え、前記柱状物が1μmより大きく3μm以下の直径及び前記フィルムの表面から最大約2μm〜約20μmの高さを有する、医療装置。
- 前記フィルムを有しないインプラントと比較して、改善された生体適合性を有する、請求項12に記載の医療装置。
- 平坦なポリジオキサノンフィルムと比較して、増大したタンパク質吸着能を有する、請求項12に記載の医療装置。
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