JP2012251163A - Ptfe層および製造方法 - Google Patents
Ptfe層および製造方法 Download PDFInfo
- Publication number
- JP2012251163A JP2012251163A JP2012186946A JP2012186946A JP2012251163A JP 2012251163 A JP2012251163 A JP 2012251163A JP 2012186946 A JP2012186946 A JP 2012186946A JP 2012186946 A JP2012186946 A JP 2012186946A JP 2012251163 A JP2012251163 A JP 2012251163A
- Authority
- JP
- Japan
- Prior art keywords
- ptfe layer
- ptfe
- layer
- stretching
- stretched
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
- Y10T428/1393—Multilayer [continuous layer]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249981—Plural void-containing components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
Abstract
【解決手段】ノードおよびフィブリルミクロ構造を僅かに有しているか或は有していない薄いPTFE層を説明し、制御可能な浸透性および多孔性を見込んでいるPTFE層を製造する方法を開示する。幾つかの実施形態では、PTFE層は血管内移植片または他の医療装置におけるバリア層として作用してもよい。
【選択図】図1
Description
実施形態のこれらの特徴は添付の模範的な図面と関連して行なわれる下記の詳細な説明からより明らかになるであろう。
Claims (58)
- PTFE層を用意することと、
PTFE層の少なくとも一部に延伸剤を塗布することと、
PTFE層が延伸剤で湿っている間にPTFE層を延伸して延伸されたPTFE層を形成することと、
を備えているPTFEを処理する方法。 - 延伸前に延伸剤をPTFE層の実質的にすべてに塗布する、請求項1に記載の方法。
- PTFE層の延伸は約2:1ないし約20:1の延伸比だけPTFE層を延伸することよりなる、請求項1に記載の方法。
- PTFE層の延伸は機械方向に延伸することよりなる、請求項1に記載の方法。
- 層の延伸は機械方向に対して横の方向にPTFE層を延伸することよりなる、請求項1に記載の方法。
- PTFE層を濃密化し且つ圧縮するために延伸されたPTFE層をカレンダー仕上げすることを更に備えている請求項1に記載の方法。
- 延伸剤はイソパラフィンよりなる、請求項1に記載の方法。
- 延伸剤はナフサ、ミネラルスピリット、アルコール、MEK、トルエンおよびアルコールよりなる群から選択される、請求項1に記載の方法。
- 延伸剤を塗布前のPTFE層の潤滑剤含有量は約0重量%ないし約22重量%である、請求項1に記載の方法。
- 延伸剤をPTFE層への塗布後にPTFE層に隣接して配置された掬い取り部材で広げることを更に備えている請求項1に記載の方法。
- PTFE層の延伸を約26.66℃(80°F)ないし37.78℃(100°F)の温度で行なう、請求項1に記載の方法。
- PTFE層の延伸を約29.44℃(85°F)ないし約35℃(95°F)の温度で行なう、請求項1に記載の方法。
- 延伸剤を43.33℃(110°F)ないし約54.44℃(130°F)の温度でPTFE層に塗布する、請求項1に記載の方法。
- 延伸剤を46.11℃(115°F)ないし約51.67℃(125°F)の温度でPTFE層に塗布する、請求項13に記載の方法。
- PTFE層の延伸をPTFE層の材料のガラス転移温度より僅かに高い温度で行なう、請求項1に記載の方法。
- 用意されたPTFE層はPTFEリボン押出物を形成するために、配合されたPTFE樹脂を押出器に通して押出すことにより製造される、請求項1に記載の方法。
- 配合された樹脂を押出してリボン構成を有し且つ約0508cm(0.020インチ)ないし約0.1016cm(0.040インチ)の厚さを有する押出物とする、請求項16に記載の方法。
- PTFEリボン押出物を延伸前に約0.00254cm(0.001インチ)ないし約0.0127cm(0.005インチ)の減少厚さまでカレンダー仕上げする、請求項16に記載の方法。
- 延伸剤をPTFE層の一部が延伸時に延伸剤で飽和されるような十分な量でPTFE層に塗布する、請求項1に記載の方法。
- 延伸されたPTFE層をこれに延伸剤を添加しないで2回目に延伸することを更に備えている請求項1に記載の方法。
- 延伸されたPTFE層は、2回目の延伸中に延伸されたPTFE層に認識可能なノードおよびフィブリルミクロ構造を形成するように十分に低い延伸剤含有量を有している、請求項20に記載の方法。
- 延伸されたPTFE層を焼結することを更に備えている請求項1に記載の方法。
- PTFE層を用意することと、
PTFE層の一部が延伸剤で飽和されて飽和部分を形成するまで、PTFE層の少なくとも一部に延伸剤を塗布することと、
PTFE層の飽和部分が延伸剤で飽和されている間、PTFE層を延伸することと、
を備えているPTFEを処理する方法。 - PTFE層の実質的にすべてを延伸前に延伸剤で飽和させて飽和部分を形成する、請求項23に記載の方法。
- PTFE層を焼結することを更に備えている請求項24に記載の方法。
- 少なくとも第1方向に延伸された延伸PTFE層を用意することと、
延伸されたPTFE層の少なくとも一部に延伸剤を塗布することと、
延伸されたPTFE層が延伸剤で湿っている間、延伸されたPTFE層を延伸することと、
を備えているPTFEを処理する方法。 - 延伸された層の延伸前に延伸剤を延伸されたPTFE層の実質的にすべてに塗布する、請求項26に記載の方法。
- 延伸されたPTFE層は延伸剤の塗布前に約3重量%より低い潤滑剤含有量を有している、請求項26に記載の方法。
- 延伸されたPTFE層は、第1方向における延伸中に延伸されたPTFE層に認識可能なノードおよびフィブリルミクロ構造を形成するように十分に低い延伸剤含有量で第1方向に延伸されたものである、請求項26に記載の方法。
- 延伸された層の延伸を第1方向と異なる方向に行なう、請求項26に記載の方法。
- 第1方向は機械方向であり、延伸された層の延伸を横方向に行なう、請求項30に記載の方法。
- 延伸されたPTFE材料層の延伸は約2:1ないし約30:1の延伸比だけ横方向に行われる、請求項30に記載の方法。
- 延伸された層の延伸は第1方向と実質的に同じ方向に行われる、請求項26に記載の方法。
- 第1方向は機械方向であり、延伸された層の延伸は機械方向に行われる、請求項33に記載の方法。
- 延伸されたPTFE層は、PTFE層がそれに塗布された延伸剤で湿っている間に第1方向に延伸されたものである、請求項26に記載の方法。
- PTFE層を焼結することを更に備えている請求項26に記載の方法。
- PTFE層を用意することと、
延伸剤を層の少なくとも一部に塗布することと、
PTFE層をこれが延伸剤で湿っている間に延伸して延伸されたPTFE層を形成することと、
延伸されたPTFE層を二回目に延伸することと、
2回延伸されたPTFE層をカレンダー仕上げして2回延伸されたPTFE層を濃密化し、更に薄くすることと、
を備えているPTFE処理する方法。 - 延伸前に延伸剤を層の表面の実質的にすべてに塗布する、請求項37に記載の方法。
- PTFE層を用意し、
層の表面に延伸剤を塗布し、そして
PTFE層をこれが延伸剤で湿っている間に延伸ことにより、
製造された層よりなるPTFE層。 - PTFE層を用意し、
層の表面に延伸剤を塗布し、
PTFE層をこれが延伸剤で湿っている間に延伸し、そして
延伸されたPTFE層を2回目に延伸することにより
製造された層よりなるPTFE層。 - PTFE層を用意し、
層の表面に延伸剤を塗布し、
PTFE層をこれが延伸剤で湿っている間に延伸し、
延伸されたPTFE層を2回目に延伸し、そして
2回延伸されたPTFE層をカレンダー仕上げして2回延伸されたPTFE層を濃密化し、更に薄くすることにより
製造された層よりなるPTFE層。 - 実質的に低い多孔性、低い浸透性を備えており、認識可能なノードおよびフィブリル構造を備えていなく、且つ約0.000127cm(0.00005インチ)ないし0.0127cm(0.005インチ)の厚さを有している薄いPTFE層。
- 複数の相互に連結された高密度の領域を備えてそれらの間に認識可能なノードおよびフィブリルミクロ構造を有していない独立気泡ミクロ構造を有している延伸されたPTFE層を備えている第1層と、
第1層に固着されており、且つ実質的なノードおよびフィブリルミクロ構造を有している第2の延伸されたPTFE層と、
を備えている複合PTFEフィルム。 - PTFE層を用意し、
PTFE層に延伸剤を添加し、そして
PTFE層を少なくとも1つの方向に延伸して延伸されたPTFE層に液体浸透性実質的に生じることなしにPTFE層の厚さを減少させることにより
製造された薄い実質的に液体不浸透性PTFE層。 - 延伸されたPTFE層は認識可能なノードおよびフィブリルミクロ構造の無い複数の相互に連結された高密度の領域を備えている独立気泡のミクロ構造を備えている、請求項41に記載の薄い層。
- 多層式血管移植片であって、
外面と、血管移植片の内側の内腔を構成する内面とを有する第1管状ボディと、
外面と、第1管状ボディの外面に結合された内面とを有する第2管状ボディと、を備えており、
第1管状ボディおよび第2管状ボディのうちの一方は流体浸透性PTFE層を備えており、他方の管状ボディは低い流体浸透性を有するPTFE層を備えている、多層式血管移植片。 - 低い流体浸透性を有するPTFE層は複数の相互連結された高密度の領域を備えている独立気泡ミクロ構造を備えており、この独立気泡ミクロ構造は認識可能なノードおよびフィブリルミクロ構造を有していない、請求項46に記載の多層式血管移植片。
- 低い流体浸透性を有するPTFE層は、実質的に低い多孔性を有していて、認識可能なノードおよびフィブリルミクロ構造を有していなく、且つ著しい再コイル巻きまたは跳ね戻りなしにPTFE層の機械的操りまたは歪を許容するように高い程度の従順性および柔軟性を有している薄いPTFE層よりなる、請求項46に記載の多層式血管移植片。
- 膨らまし可能な空間を構成している膨らまし可能なチャンネルを有するボディ部分を備えており、膨らまし可能な空間は流体浸透性を実質的に有していない薄いPTFE層により少なくとも部分的に取囲まれている、膨らまし可能な血管内移植片。
- 流体浸透性を実質的に有していないPTFE層は複数の相互連結された高密度の領域を備えている独立気泡ミクロ構造を備えており、この独立気泡ミクロ構造は認識可能なノードおよびフィブリルミクロ構造を有していない、請求項49記載の膨らまし可能な血管内移植片。
- 流体浸透性を実質的に有していないPTFE層は、実質的に低い多孔性を有していて、認識可能なノードおよびフィブリル構造を有していなく、且つ著しい再コイル巻きまたは跳ね戻りなしにPTFE層の機械的操りまたは歪を許容するように高い程度の従順性および柔軟性を有している薄いPTFE層よりなる、請求項49に記載の多層式血管移植片。
- 高密度の領域を有する独立気泡ミクロ構造を備えており、高密度の領域の粒子境界部は隣接した高密度の領域の粒子境界部に直接連結されており、独立気泡ミクロ構造は認識可能なノードおよびフィブリルミクロ構造を有していなく、且つ実質的に流体浸透性を有していない、延伸されたPTFE層。
- 高密度の領域を有する独立気泡ミクロ構造を有する薄い延伸されたPTFE層の表面に固着された流体浸透性の発泡PTFE層を備えており、高密度の領域の粒子境界部は隣接した高密度の領域の粒子境界部に直接連結されており、独立気泡ミクロ構造は認識可能なノードおよびフィブリルミクロ構造を有していない、複合フィルム。
- 複合フィルムを備えている管状構造体であって、複合フィルムは、高密度の領域を有する独立気泡ミクロ構造を有する薄い延伸されたPTFE層の表面に固着された流体浸透性の発泡PTFE層を備えており、高密度の領域の粒子境界部は隣接した高密度の領域の粒子境界部に直接連結されており、独立気泡ミクロ構造は認識可能なノードおよびフィブリルミクロ構造を有していない、管状構造体。
- 複合フィルムを備えている血管内移植片であって、複合フィルムは、高密度の領域を有する独立気泡ミクロ構造を有する薄い延伸されたPTFE層の表面に固着された流体浸透性の発泡PTFE層を備えており、高密度の領域の粒子境界部は隣接した高密度の領域の粒子境界部に直接連結されており、独立気泡ミクロ構造は認識可能なノードおよびフィブリルミクロ構造を有していない、血管内移植片。
- 実質的に低い多孔性と、低い液体浸透性とを有しており、認識可能なノードおよびフィブリル構造を有していなく、且つ著しい再コイル巻きまたは跳ね戻りなしにPTFE層の機械的操りまたは歪を許容するように高い程度の従順性および柔軟性を有している薄いPTFE層。
- 認識可能なノードおよびフィブリルミクロ構造が間に無い複数の相互連結された高密度の領域を備えている独立気泡ミクロ構造を有する延伸されたPTFE層を備えている薄いPTFE層。
- PTFE層の多孔性、密度またはそれらの両方を制御する方法であって、
少なくとも一回の延伸のための所定の延伸剤含有量を使用しながら、PTFE層を所定の温度で少なくとも1回延伸することを備えている制御方法。
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- 2006-03-30 CA CA002604919A patent/CA2604919A1/en not_active Abandoned
- 2006-03-30 JP JP2008506495A patent/JP5284776B2/ja not_active Expired - Fee Related
- 2006-03-30 EP EP16171681.6A patent/EP3095585B1/en active Active
- 2006-03-30 EP EP06740124.0A patent/EP1888318B1/en active Active
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2008
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2010
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US20140300033A1 (en) | 2014-10-09 |
EP3095585B1 (en) | 2022-05-04 |
US20060233991A1 (en) | 2006-10-19 |
US10864070B2 (en) | 2020-12-15 |
EP1888318A2 (en) | 2008-02-20 |
CA2604919A1 (en) | 2006-10-26 |
US11510774B2 (en) | 2022-11-29 |
JP5917338B2 (ja) | 2016-05-11 |
JP2008536558A (ja) | 2008-09-11 |
WO2006113086A3 (en) | 2007-02-08 |
US20210085446A1 (en) | 2021-03-25 |
EP1888318B1 (en) | 2016-08-24 |
US20160367354A1 (en) | 2016-12-22 |
US20110040373A1 (en) | 2011-02-17 |
JP5284776B2 (ja) | 2013-09-11 |
US20090036973A1 (en) | 2009-02-05 |
US9446553B2 (en) | 2016-09-20 |
US8728372B2 (en) | 2014-05-20 |
EP3095585A1 (en) | 2016-11-23 |
WO2006113086A2 (en) | 2006-10-26 |
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