JP2013504459A5 - - Google Patents
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- JP2013504459A5 JP2013504459A5 JP2012528900A JP2012528900A JP2013504459A5 JP 2013504459 A5 JP2013504459 A5 JP 2013504459A5 JP 2012528900 A JP2012528900 A JP 2012528900A JP 2012528900 A JP2012528900 A JP 2012528900A JP 2013504459 A5 JP2013504459 A5 JP 2013504459A5
- Authority
- JP
- Japan
- Prior art keywords
- tube
- expanded
- elongated tube
- struts
- expansion
- 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
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- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920001432 poly(L-lactide) Polymers 0.000 claims 1
Claims (9)
- PLLAを含む材料で造られたチューブを提供するステップと;
前記チューブをプロセシング温度まで加熱しながら前記チューブを半径方向に拡張及び軸線方向に伸長するステップとを備え;
前記プロセシング温度及び前記半径方向の拡張の拡張率並びに前記軸線方向の伸長の伸長率は、前記拡張及び伸長されたチューブが増大した強度並びに増大した破壊靭性を有するように選択され;
前記プロセシング温度は、前記拡張及び伸長されたチューブの壁厚にわたる機械特性の均質性を向上するように更に選択され;
前記拡張及び伸長されたチューブからステントを形成するステップを更に備える;
ステントを製造する方法。 - 前記半径方向に拡張及び軸線方向に伸長するステップの間に、結晶化度が45乃至50%まで増大する、請求項1に記載の方法。
- 前記チューブは、摂氏80乃至100度の温度で前記半径方向に拡張され、前記軸線方向に伸長される、請求項1又は請求項2に記載の方法。
- 前記チューブの半径方向の拡張の拡張率は400%であり、前記軸線方向の伸長の伸長率は20%である、請求項1乃至請求項3のいずれか一項に記載の方法。
- 均質性を向上すべき前記機械特性は、弾性率及び/又は前記拡張及び伸長されたチューブの硬さである、請求項1乃至請求項4のいずれか一項に記載の方法。
- 前記拡張及び伸長されたチューブの壁厚にわたる機械特性の均質性は、前記拡張及び伸長されたチューブの内面部の第1の弾性率と前記拡張及び伸長されたチューブの外面部の第2の弾性率とが略同一であるように構成される、請求項1乃至請求項5のいずれか一項に記載の方法。
- 前記拡張及び伸長されたチューブの壁厚にわたる機械特性の均質性は、前記拡張及び伸長されたチューブの内面部の第1の硬さと前記拡張及び伸長されたチューブの外面部の第2の硬さとが略同一であるように構成される、請求項1乃至請求項6のいずれか一項に記載の方法。
- 前記チューブは、110乃至140psiの拡張圧力、0.32乃至1.0mm/秒の加熱ノズルの平行移動速度及び0.58乃至3.8mm/秒の引張速度の条件で前記拡張及び伸長される、請求項1乃至請求項7のいずれか一項に記載の方法。
- 前記ステントはパターンを形成し;
前記パターンは:
クレスト及びトラフを有する正弦波状の複数のリングと;
クレストでの124乃至128度の角度と;
前記正弦波状の複数のリングを連結する複数のストラットであって、前記複数のストラットは前記拡張及び伸長されたチューブの長手方向軸線と平行であるストラットとを含み;
前記連結する複数のストラット及び前記正弦波状の複数のリングは、前記チューブの長手方向軸線上に離間して隣接した一対の前記正弦波状のリングと周方向に離間して隣接した一対の前記連結するストラットとによって形成される閉じられたセルを形成するように配置される;
請求項1乃至請求項8のいずれか一項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/559,400 | 2009-09-14 | ||
US12/559,400 US8501079B2 (en) | 2009-09-14 | 2009-09-14 | Controlling crystalline morphology of a bioabsorbable stent |
PCT/US2010/048287 WO2011031872A2 (en) | 2009-09-14 | 2010-09-09 | Controlling crystalline morphology of a bioabsorbable stent |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2013504459A JP2013504459A (ja) | 2013-02-07 |
JP2013504459A5 true JP2013504459A5 (ja) | 2013-10-31 |
JP5718923B2 JP5718923B2 (ja) | 2015-05-13 |
Family
ID=43567942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012528900A Active JP5718923B2 (ja) | 2009-09-14 | 2010-09-09 | 生体吸収性ステントの結晶モルフォロジの制御 |
Country Status (5)
Country | Link |
---|---|
US (2) | US8501079B2 (ja) |
EP (1) | EP2477797B1 (ja) |
JP (1) | JP5718923B2 (ja) |
CN (1) | CN102497970B (ja) |
WO (1) | WO2011031872A2 (ja) |
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-
2009
- 2009-09-14 US US12/559,400 patent/US8501079B2/en active Active
-
2010
- 2010-09-09 JP JP2012528900A patent/JP5718923B2/ja active Active
- 2010-09-09 CN CN201080040804.4A patent/CN102497970B/zh active Active
- 2010-09-09 WO PCT/US2010/048287 patent/WO2011031872A2/en active Application Filing
- 2010-09-09 EP EP10766384.1A patent/EP2477797B1/en not_active Not-in-force
-
2013
- 2013-01-04 US US13/734,879 patent/US9211682B2/en active Active
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