JP4791085B2 - 医療用脈管ステント用ポリマー材料及び脈管用ステントの糸 - Google Patents
医療用脈管ステント用ポリマー材料及び脈管用ステントの糸 Download PDFInfo
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- JP4791085B2 JP4791085B2 JP2005163139A JP2005163139A JP4791085B2 JP 4791085 B2 JP4791085 B2 JP 4791085B2 JP 2005163139 A JP2005163139 A JP 2005163139A JP 2005163139 A JP2005163139 A JP 2005163139A JP 4791085 B2 JP4791085 B2 JP 4791085B2
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- Prior art keywords
- polylactic acid
- vascular stent
- stent
- yarn
- melt
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- 230000002792 vascular Effects 0.000 title claims description 58
- 239000002861 polymer material Substances 0.000 title claims description 10
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 76
- 239000004626 polylactic acid Substances 0.000 claims description 76
- 239000000463 material Substances 0.000 claims description 29
- 230000003287 optical effect Effects 0.000 claims description 19
- 238000006116 polymerization reaction Methods 0.000 claims description 13
- 238000002074 melt spinning Methods 0.000 claims description 12
- 239000002685 polymerization catalyst Substances 0.000 claims description 10
- UQDJGEHQDNVPGU-UHFFFAOYSA-N serine phosphoethanolamine Chemical compound [NH3+]CCOP([O-])(=O)OCC([NH3+])C([O-])=O UQDJGEHQDNVPGU-UHFFFAOYSA-N 0.000 claims description 9
- 238000001479 atomic absorption spectroscopy Methods 0.000 claims description 5
- 210000004204 blood vessel Anatomy 0.000 description 29
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 12
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- 230000002411 adverse Effects 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000004310 lactic acid Substances 0.000 description 6
- 235000014655 lactic acid Nutrition 0.000 description 6
- 238000002399 angioplasty Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 208000037803 restenosis Diseases 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000009477 glass transition Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- JJTUDXZGHPGLLC-IMJSIDKUSA-N 4511-42-6 Chemical compound C[C@@H]1OC(=O)[C@H](C)OC1=O JJTUDXZGHPGLLC-IMJSIDKUSA-N 0.000 description 3
- 206010061218 Inflammation Diseases 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229920002988 biodegradable polymer Polymers 0.000 description 3
- 239000004621 biodegradable polymer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004054 inflammatory process Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000036262 stenosis Effects 0.000 description 2
- 208000037804 stenosis Diseases 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- FBYFHODQAUBIOO-UHFFFAOYSA-N 2-(1-carboxyethoxy)propanoic acid Chemical compound OC(=O)C(C)OC(C)C(O)=O FBYFHODQAUBIOO-UHFFFAOYSA-N 0.000 description 1
- 208000005422 Foreign-Body reaction Diseases 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 210000000013 bile duct Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- UREBDLICKHMUKA-CXSFZGCWSA-N dexamethasone Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@]2(F)[C@@H]1[C@@H]1C[C@@H](C)[C@@](C(=O)CO)(O)[C@@]1(C)C[C@@H]2O UREBDLICKHMUKA-CXSFZGCWSA-N 0.000 description 1
- 229960003957 dexamethasone Drugs 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000028709 inflammatory response Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Description
Claims (5)
- L−体の光学純度が99.8%以上であって、重量平均分子量が80,000〜300,000の範囲あるポリ乳酸からなることを特徴とする医療用脈管ステント用のポリマー材料。
- L−ラクタイドに重合触媒を添加した重合材料を溶融重合して生成されたポリ乳酸であって、上記L−ラクタイドを溶融重合する際に用いられた上記重合触媒の残存料が原子吸光法により検出されない範囲まで除去され、L−体の光学純度が99.8%以上であり、重量平均分子量が80,000〜300,000の範囲にあるポリ乳酸からなることを特徴とする医療用脈管ステント用のポリマー材料。
- L−体の光学純度が99.8%以上であって、重量平均分子量が80,000〜300,000の範囲にあるポリ乳酸を溶融紡糸して形成されたことを特徴とする医療用脈管用ステント用の糸。
- L−ラクタイドに重合触媒を添加した重合材料を溶融重合して生成され、上記L−ラクタイドを溶融重合する際に用いられた上記重合触媒の残存料が原子吸光法により検出されない範囲まで除去され、L−体の光学純度が99.8%以上であり、重量平均分子量が80,000〜300,000の範囲にあるポリ乳酸を溶融紡糸して形成されたことを特徴とする医療用脈管用ステント用の糸。
- 上記ポリ乳酸(PLLA)を溶融紡糸した糸は、結晶化度が15%〜60%の範囲にあるモノフィラメントであることをと特徴とする請求項3又は4記載の医療用脈管用ステント用の糸。
Priority Applications (1)
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JP2005163139A JP4791085B2 (ja) | 2005-06-02 | 2005-06-02 | 医療用脈管ステント用ポリマー材料及び脈管用ステントの糸 |
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JP2005163139A JP4791085B2 (ja) | 2005-06-02 | 2005-06-02 | 医療用脈管ステント用ポリマー材料及び脈管用ステントの糸 |
Related Child Applications (1)
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---|---|---|---|
JP2010249935A Division JP5170474B2 (ja) | 2010-11-08 | 2010-11-08 | 脈管用ステント |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006334171A JP2006334171A (ja) | 2006-12-14 |
JP2006334171A5 JP2006334171A5 (ja) | 2010-12-02 |
JP4791085B2 true JP4791085B2 (ja) | 2011-10-12 |
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JP2005163139A Active JP4791085B2 (ja) | 2005-06-02 | 2005-06-02 | 医療用脈管ステント用ポリマー材料及び脈管用ステントの糸 |
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JP (1) | JP4791085B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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BR112012007955B1 (pt) * | 2009-10-06 | 2020-07-21 | Sahajanand Medical Technologies Private Limited | implante vascular biorreabsorvível |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3316306B2 (ja) * | 1994-05-06 | 2002-08-19 | カネボウ株式会社 | 高分子量ポリ乳酸成形品の製造方法 |
JP3258823B2 (ja) * | 1993-09-09 | 2002-02-18 | カネボウ株式会社 | 生分解性ポリエステル共重合体、その製法および該共重合体からの成形品 |
JP3304198B2 (ja) * | 1994-05-06 | 2002-07-22 | カネボウ株式会社 | 改良された生分解性ポリエステル共重合体、その成形体及びその製造方法 |
JPH1033657A (ja) * | 1996-07-23 | 1998-02-10 | Dainippon Ink & Chem Inc | 生体内分解性材料及びその製造方法 |
JP2006262960A (ja) * | 2005-03-22 | 2006-10-05 | Terumo Corp | ステント |
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