JP6017617B2 - 分解速度が調節可能な生分解性ステント - Google Patents
分解速度が調節可能な生分解性ステント Download PDFInfo
- Publication number
- JP6017617B2 JP6017617B2 JP2015084280A JP2015084280A JP6017617B2 JP 6017617 B2 JP6017617 B2 JP 6017617B2 JP 2015084280 A JP2015084280 A JP 2015084280A JP 2015084280 A JP2015084280 A JP 2015084280A JP 6017617 B2 JP6017617 B2 JP 6017617B2
- Authority
- JP
- Japan
- Prior art keywords
- stent
- lla
- scaffold
- lactide
- plla
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/148—Materials at least partially resorbable by the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
- B23K26/402—Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
ステップ1:LLAモノマー2gとPLLA8gをクロロホルム400mlに溶解する。
ステップ2:クロロホルムを蒸発させて、LLAが25wt%のPLLAとLLAの均一な混合物を形成する。
ステップ3:LLAが25wt%の混合物を押出機にてPLLA4kgと混合し、PLLAにおけるLLAを0.5wt%とする。
LLAとPLLAの均一な混合物を調製する第二の方法は、クロロホルムなどの溶媒にLLAを溶解させて溶液を形成し、この溶液をPLLAペレットに噴霧することを含む。溶媒を除去すると、PLLAペレットに付着したLLAが残る。PLLAペレットを例えば押出機で溶融加工し、目標濃度のLLAを含むPLLAのチューブを形成する。この方法を、以下の例で説明する。
ステップ1:LLA0.5gを無水モノメタノール100mlに溶解して溶液を形成する。
ステップ2:溶液を1kgのPLLAペレットに噴霧し、撹拌する。
ステップ3:ペレットを真空オーブンに入れ、溶媒を除去する。
ステップ4:ペレットを押出機に入れ、LLAが0.5wt%のチューブを形成する。
ポリ(L−ラクチド)と、前記ポリ(L−ラクチド)に混合、分散、または溶解させた0.05wt%〜0.5wt%のL−ラクチドモノマーとを含むポリマースキャフォールドを備え、
前記ポリ(L−ラクチド)の結晶化度は、20〜50%であり、
前記ポリ(L−ラクチド)の数平均分子量は、ポリスチレン標準と比較して60,000〜300,000である、
血管の開存性を維持し患部を治療するためのステント。
[第2の局面]
前記スキャフォールドは、95wt%超のポリ(L−ラクチド)を含む、
第1の局面に記載のステント。
[第3の局面]
前記スキャフォールドは、一定パターンのストラットで構成され、
前記一定パターンのストラットは、結合用ストラットと前記結合用ストラットで接続された複数の円筒形リングを含む、
第1の局面または第2の局面に記載のステント。
[第4の局面]
前記ストラットは、矩形断面を有し、断面積が20,000〜25,000μm2である、
第3の局面に記載のステント。
[第5の局面]
前記スキャフォールドは、チューブをラジアル方向に200〜500%拡張させ、前記チューブから前記ステントを形成することによって誘発したポリマー鎖配向を有する、
第1の局面〜第4の局面のいずれかに記載のステント。
[第6の局面]
前記L−ラクチドモノマーは、100〜1000nmのサイズの粒子である、
第1の局面〜第5の局面のいずれかに記載のステント。
Claims (7)
- ポリ(L−ラクチド)と、前記ポリ(L−ラクチド)に混合、分散、または溶解させた0.05wt%〜1.0wt%のL−ラクチドモノマーを含むポリマースキャフォールドを備え、
前記スキャフォールドの結晶化度は、20〜50%であり、
前記スキャフォールドは、一定パターンのストラットで構成され、
前記一定パターンのストラットは、結合用ストラットと前記結合用ストラットによって接続された複数の円筒形リングを含み、
前記スキャフォールドの数平均分子量は、ポリスチレン標準と比較して60,000〜300,000g/molである、
血管の開存性を維持し患部を治療するためのステント。 - 前記スキャフォールドは、95wt%超の前記ポリ(L−ラクチド)を含む、
請求項1のステント。 - 前記ポリマースキャフォールドは、前記ポリ(L−ラクチド)に混合、分散、または溶解させた0.05wt%〜0.5wt%のL−ラクチドモノマーを含む、
請求項1のステント。 - 前記ストラットは、矩形断面を有し、断面積が20,000〜25,000μm2である、
請求項1のステント。 - 前記スキャフォールドは、チューブをラジアル方向に200〜500%拡張させることによって誘発したポリマー鎖配向を有する、
請求項1〜4のいずれか1項のステント。 - 前記L−ラクチドモノマーは、100〜1000nmのサイズの粒子である、
請求項1〜5のいずれか1項のステント。 - 前記スキャフォールドは、薬剤、ポリマー、充填剤から選択された追加成分を含む、
請求項1〜6のいずれか1項のステント。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/506,973 | 2009-07-21 | ||
US12/506,973 US9889238B2 (en) | 2009-07-21 | 2009-07-21 | Biodegradable stent with adjustable degradation rate |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012521678A Division JP5735505B2 (ja) | 2009-07-21 | 2010-07-14 | 分解速度が調節可能な生分解性ステント |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2015154957A JP2015154957A (ja) | 2015-08-27 |
JP2015154957A5 JP2015154957A5 (ja) | 2015-10-08 |
JP6017617B2 true JP6017617B2 (ja) | 2016-11-02 |
Family
ID=42731897
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012521678A Active JP5735505B2 (ja) | 2009-07-21 | 2010-07-14 | 分解速度が調節可能な生分解性ステント |
JP2015084280A Expired - Fee Related JP6017617B2 (ja) | 2009-07-21 | 2015-04-16 | 分解速度が調節可能な生分解性ステント |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012521678A Active JP5735505B2 (ja) | 2009-07-21 | 2010-07-14 | 分解速度が調節可能な生分解性ステント |
Country Status (12)
Country | Link |
---|---|
US (1) | US9889238B2 (ja) |
EP (2) | EP2456480B2 (ja) |
JP (2) | JP5735505B2 (ja) |
CY (1) | CY1116668T1 (ja) |
DK (1) | DK2456480T3 (ja) |
ES (2) | ES2546097T3 (ja) |
HK (1) | HK1216303A1 (ja) |
HU (1) | HUE025457T2 (ja) |
PL (1) | PL2456480T3 (ja) |
PT (1) | PT2456480E (ja) |
SI (1) | SI2456480T1 (ja) |
WO (1) | WO2011011242A2 (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9889238B2 (en) | 2009-07-21 | 2018-02-13 | Abbott Cardiovascular Systems Inc. | Biodegradable stent with adjustable degradation rate |
US8889823B2 (en) | 2009-07-21 | 2014-11-18 | Abbott Cardiovascular Systems Inc. | Method to make poly(L-lactide) stent with tunable degradation rate |
US8966868B2 (en) * | 2011-05-09 | 2015-03-03 | Abbott Cardiovascular Systems Inc. | Methods of stabilizing molecular weight of polymer stents after sterilization |
US8709070B2 (en) | 2011-05-10 | 2014-04-29 | Abbott Cardiovascular Systems Inc. | Bioabsorbable scaffold with particles providing delayed acceleration of degradation |
US8834776B2 (en) * | 2011-05-10 | 2014-09-16 | Abbott Cardiovascular Systems Inc. | Control of degradation profile of bioabsorbable poly(l-lactide) scaffold |
US8545546B2 (en) | 2011-05-13 | 2013-10-01 | Abbott Cardiovascular Systems Inc. | Bioabsorbable scaffolds made from composites |
CN102499999B (zh) * | 2011-11-22 | 2014-06-18 | 深圳市信立泰生物医疗工程有限公司 | 一种形变后的聚合物管材和由其制备的完全可生物降解聚合物支架 |
US20130338700A1 (en) * | 2012-06-13 | 2013-12-19 | Matheny Enterprises, Llc | Biodegradable, Active Ingredient-Eluting Structural Support |
US9205456B2 (en) * | 2012-07-24 | 2015-12-08 | Abbott Cardiovascular Systems Inc. | Modifying polymer properties with penetrants in the fabrication of bioresorbable scaffolds |
WO2015020527A1 (en) | 2013-08-09 | 2015-02-12 | Maastricht University | Biodegradable radiopaque stents and other implants |
US10207449B2 (en) | 2014-06-24 | 2019-02-19 | Cook Medical Technologies Llc | Sequential biaxial strain of semi-crystalline tubes |
JPWO2016114216A1 (ja) * | 2015-01-13 | 2017-10-19 | テルモ株式会社 | 生分解性ステント |
ES2855203T3 (es) * | 2015-06-05 | 2021-09-23 | Council Scient Ind Res | Un proceso de una etapa para la peletización de ácido poliláctico sin procesamiento en estado fundido |
CN108289747B (zh) * | 2015-11-26 | 2020-11-27 | 株式会社日本医疗机器技研 | 生物体吸收性支架 |
CN115219655A (zh) * | 2022-06-14 | 2022-10-21 | 南京浩衍鼎业科技技术有限公司 | 一种聚合物产品降解速率控制方法 |
WO2023250246A2 (en) * | 2022-06-24 | 2023-12-28 | Razmodics Llc | Implantable scaffolds having biodegradable components and methods of manufacturing and use thereof |
Family Cites Families (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4539981A (en) | 1982-11-08 | 1985-09-10 | Johnson & Johnson Products, Inc. | Absorbable bone fixation device |
DE4014974A1 (de) | 1990-05-10 | 1991-11-14 | Boehringer Ingelheim Kg | Verfahren zur herstellung von loesungsmittel- und restmonomerenfreien in spritzgiess-, extrusions- und schmelzspinnverfahren einsetzbaren polymeren |
JPH04166165A (ja) | 1990-10-30 | 1992-06-12 | Shimadzu Corp | 骨固定用材料 |
JPH04282337A (ja) | 1991-03-08 | 1992-10-07 | Fuji Photo Film Co Ltd | 2−アリールオキシ−1−クロルプロパンの製造方法 |
US5357034A (en) | 1992-09-08 | 1994-10-18 | Camelot Technologies Inc. | Lactide polymerization |
US5338822A (en) * | 1992-10-02 | 1994-08-16 | Cargill, Incorporated | Melt-stable lactide polymer composition and process for manufacture thereof |
US5747637A (en) | 1995-09-07 | 1998-05-05 | Mitsui Toatsu Chemicals, Inc. | Bioabsorbable polymer and process for preparing the same |
US6174330B1 (en) * | 1997-08-01 | 2001-01-16 | Schneider (Usa) Inc | Bioabsorbable marker having radiopaque constituents |
US5824059A (en) * | 1997-08-05 | 1998-10-20 | Wijay; Bandula | Flexible stent |
US6206883B1 (en) | 1999-03-05 | 2001-03-27 | Stryker Technologies Corporation | Bioabsorbable materials and medical devices made therefrom |
PT2298366E (pt) | 2000-03-13 | 2012-11-20 | Kyoto Iryo Sekkei Kk | Material linear para endoprótese intravascular e endoprótese intravascular que utiliza o mesmo |
KR100354828B1 (ko) * | 2001-03-12 | 2002-10-05 | 주식회사 씨엠리서치 | 생분해성 폴리에스테르의 제조방법 및 그에 의해 제조된생분해성 폴리에스테르 |
US20030069629A1 (en) | 2001-06-01 | 2003-04-10 | Jadhav Balkrishna S. | Bioresorbable medical devices |
GB0116341D0 (en) | 2001-07-04 | 2001-08-29 | Smith & Nephew | Biodegradable polymer systems |
US7731890B2 (en) | 2006-06-15 | 2010-06-08 | Advanced Cardiovascular Systems, Inc. | Methods of fabricating stents with enhanced fracture toughness |
US8747879B2 (en) | 2006-04-28 | 2014-06-10 | Advanced Cardiovascular Systems, Inc. | Method of fabricating an implantable medical device to reduce chance of late inflammatory response |
US20060041102A1 (en) | 2004-08-23 | 2006-02-23 | Advanced Cardiovascular Systems, Inc. | Implantable devices comprising biologically absorbable polymers having constant rate of degradation and methods for fabricating the same |
US8778375B2 (en) | 2005-04-29 | 2014-07-15 | Advanced Cardiovascular Systems, Inc. | Amorphous poly(D,L-lactide) coating |
US7291166B2 (en) * | 2005-05-18 | 2007-11-06 | Advanced Cardiovascular Systems, Inc. | Polymeric stent patterns |
DE102005033101A1 (de) | 2005-07-15 | 2007-01-25 | Boehringer Ingelheim Pharma Gmbh & Co. Kg | Resorbierbare Polyetherester und ihre Verwendung zur Herstellung von medizinischen Implantaten |
US20070179276A1 (en) | 2006-01-31 | 2007-08-02 | Purac Biochem Bv | Method for the purification of resorbable polymers from residual monomers |
US8486135B2 (en) * | 2006-06-01 | 2013-07-16 | Abbott Cardiovascular Systems Inc. | Implantable medical devices fabricated from branched polymers |
EP3061791B1 (en) | 2006-07-20 | 2019-01-16 | OrbusNeich Medical, Inc. | Bioabsorbable polymeric composition for a medical device |
JP5150074B2 (ja) | 2006-09-06 | 2013-02-20 | 帝人株式会社 | ポリ乳酸およびその製造方法 |
JP5647788B2 (ja) | 2006-10-11 | 2015-01-07 | トルマー セラピューティクス, インコーポレイテッド. | 超臨界流体抽出による低バースト特性の生分解性ポリエステルの調製 |
US10669383B2 (en) * | 2006-10-31 | 2020-06-02 | Evonik Corporation | Spheronized polymer particles |
US20080177373A1 (en) * | 2007-01-19 | 2008-07-24 | Elixir Medical Corporation | Endoprosthesis structures having supporting features |
US9248219B2 (en) | 2007-09-14 | 2016-02-02 | Boston Scientific Scimed, Inc. | Medical devices having bioerodable layers for the release of therapeutic agents |
US8303650B2 (en) * | 2008-01-10 | 2012-11-06 | Telesis Research, Llc | Biodegradable self-expanding drug-eluting prosthesis |
US8252215B2 (en) | 2008-03-31 | 2012-08-28 | Abbott Cardiovascular Systems Inc. | Method for fabricating a stent with nucleating agent |
EP2305733A4 (en) | 2008-07-24 | 2015-01-28 | Toyo Boseki | ALIPHATIC POLYESTER RESIN AND METHOD FOR THE PRODUCTION THEREOF |
US9492587B2 (en) * | 2009-04-13 | 2016-11-15 | Abbott Cardiovascular Systems Inc. | Stent made from an ultra high molecular weight bioabsorbable polymer with high fatigue and fracture resistance |
US9889238B2 (en) | 2009-07-21 | 2018-02-13 | Abbott Cardiovascular Systems Inc. | Biodegradable stent with adjustable degradation rate |
US8834776B2 (en) | 2011-05-10 | 2014-09-16 | Abbott Cardiovascular Systems Inc. | Control of degradation profile of bioabsorbable poly(l-lactide) scaffold |
-
2009
- 2009-07-21 US US12/506,973 patent/US9889238B2/en active Active
-
2010
- 2010-07-14 HU HUE10733129A patent/HUE025457T2/en unknown
- 2010-07-14 DK DK10733129.0T patent/DK2456480T3/en active
- 2010-07-14 PL PL10733129T patent/PL2456480T3/pl unknown
- 2010-07-14 SI SI201030992T patent/SI2456480T1/sl unknown
- 2010-07-14 EP EP10733129.0A patent/EP2456480B2/en active Active
- 2010-07-14 EP EP15162569.6A patent/EP2949351B1/en not_active Not-in-force
- 2010-07-14 PT PT107331290T patent/PT2456480E/pt unknown
- 2010-07-14 ES ES10733129.0T patent/ES2546097T3/es active Active
- 2010-07-14 WO PCT/US2010/041998 patent/WO2011011242A2/en active Application Filing
- 2010-07-14 JP JP2012521678A patent/JP5735505B2/ja active Active
- 2010-07-14 ES ES15162569.6T patent/ES2626604T3/es active Active
-
2015
- 2015-04-16 JP JP2015084280A patent/JP6017617B2/ja not_active Expired - Fee Related
- 2015-09-01 CY CY20151100765T patent/CY1116668T1/el unknown
-
2016
- 2016-04-14 HK HK16104310.7A patent/HK1216303A1/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2011011242A3 (en) | 2011-04-07 |
EP2949351B1 (en) | 2017-04-05 |
JP2015154957A (ja) | 2015-08-27 |
HUE025457T2 (en) | 2016-02-29 |
DK2456480T3 (en) | 2015-08-31 |
PT2456480E (pt) | 2015-09-23 |
EP2456480A2 (en) | 2012-05-30 |
HK1216303A1 (zh) | 2016-11-04 |
SI2456480T1 (sl) | 2015-11-30 |
ES2626604T3 (es) | 2017-07-25 |
EP2456480B1 (en) | 2015-06-03 |
CY1116668T1 (el) | 2017-03-15 |
PL2456480T3 (pl) | 2015-11-30 |
JP2012533408A (ja) | 2012-12-27 |
EP2949351A1 (en) | 2015-12-02 |
US20110022155A1 (en) | 2011-01-27 |
US9889238B2 (en) | 2018-02-13 |
JP5735505B2 (ja) | 2015-06-17 |
EP2456480B2 (en) | 2018-03-07 |
WO2011011242A2 (en) | 2011-01-27 |
ES2546097T3 (es) | 2015-09-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6017617B2 (ja) | 分解速度が調節可能な生分解性ステント | |
US9844612B2 (en) | Method of making a poly(L-lactide) stent with tunable degradation rate | |
US9744259B2 (en) | Implantable medical devices fabricated from branched polymers | |
Zilberman et al. | Drug-eluting bioresorbable stents for various applications | |
US9682178B2 (en) | Implantable medical devices fabricated from polymers with radiopaque groups | |
US20130085563A1 (en) | Rubber toughened bioresorbable polymer peripheral scaffolds | |
JP2013545509A (ja) | ポリ(l−ラクチド)ステントの加工における鎖切断及びモノマー生成を最小化する方法 | |
US8262723B2 (en) | Implantable medical devices fabricated from polymer blends with star-block copolymers | |
US20140142686A1 (en) | Biodegradable stent formed with polymer-bioceramic nanoparticle composite and method of making the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150807 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20160510 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20160809 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20160906 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20160928 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6017617 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |