JP2008296041A - 脈管用ステント - Google Patents
脈管用ステント Download PDFInfo
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- JP2008296041A JP2008296041A JP2008234592A JP2008234592A JP2008296041A JP 2008296041 A JP2008296041 A JP 2008296041A JP 2008234592 A JP2008234592 A JP 2008234592A JP 2008234592 A JP2008234592 A JP 2008234592A JP 2008296041 A JP2008296041 A JP 2008296041A
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
-
- 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
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- 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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
- D01F6/625—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters derived from hydroxy-carboxylic acids, e.g. lactones
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91575—Adjacent bands being connected to each other connected peak to trough
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- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0054—V-shaped
-
- 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
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/16—Materials with shape-memory or superelastic properties
Abstract
【解決手段】
生体の脈管に装着されるステント1であり、このステント1は、形状記憶機能を有する生体吸収性ポリマーからなる糸2により筒状に形成されたステント本体3を備え、このステント本体3が脈管内に留置される大きさに形状記憶されている。ステント本体3は、外力により縮径された状態で生体の脈管内に装着され、生体温度により加温されることにより拡径される。ステント本体3は、生体吸収性ポリマーからなる糸2を互いに重なり合うことなくジグザグ状に折り曲げながら筒状に巻回して形成され、糸の折り曲げ部を変位部として拡径又は縮径される。
【選択図】 図1
Description
Claims (11)
- 生体の脈管に挿入されて用いられる脈管用ステントにおいて、
形状記憶機能を有する生体吸収性ポリマーからなる糸をジグザグ状に折り曲げながら筒状に巻回され、上記糸の折り曲げ部を変位部として拡径又は縮径されたステント本体を有し、
上記ステント本体を構成する糸は、互いに重なり合うことなくジグザグ状に巻回されていることを特徴とする脈管用ステント。 - 上記糸は、一連に連続したモノフィラメントであることを特徴とする請求項1記載の脈管用ステント。
- 上記糸は、複数本のモノフィラメントが一体化されたマルチフィラメントであることを特徴とする請求項1記載の脈管用ステント。
- 上記ステント本体は、外力により縮径され、生体の脈管内に留置されたとき形状記憶された大きさに拡径されることを特徴とする請求項1記載の脈管用ステント。
- 上記ステント本体は、上記糸の互いに隣接する少なくとも一部の折り曲げ部が連結されていることを特徴とする請求項1記載の脈管用ステント。
- 上記糸は、一つの折り曲げ部の一辺を短線部とし、他の辺を長線部とすることにより螺旋状に巻回されて筒状体を形成することを特徴とする請求項1記載の脈管用ステント。
- 上記ステント本体は、上記糸をジグザグ状に折り曲げリング状に形成した複数のものを上記ステント本体の軸方向に並列配置し互いに連結して筒状に形成され、
上記各糸の中途部に形成される折り曲げ部の開き角がほぼ同一であって、上記折り曲げ部の両側の長さをほぼ同一とし、互いに隣接する折り曲げ部の頂点が互いに接触されていることを特徴とする請求項1記載の脈管用ステント。 - 上記糸は、ガラス転移温度が70℃以下の生体吸収性ポリマーにより形成されていることを特徴とする請求項1記載の脈管用ステント。
- 上記糸は、ポリ乳酸(PLLA)、ポリグリコール酸(PGA)、ポリグリコール酸とポリ乳酸の共重合体、ポリジオキサノン、トリメチレンカーボネートとグリコリドとの共重合体、ポリグリコール酸又はポリ乳酸とε−カプロラクトンとの共重合体の1又は2以上の生体吸収性ポリマーにより形成されていることを特徴とする請求項1記載の脈管用ステント。
- 上記糸は、X線不透過剤、抗血栓剤、その他新生内膜の加増殖を抑制することを目的とする薬剤、β線を放射する放射線源、γ線を放射する放射線源のうちの1又は2以上が混入された高分子ポリマーにより形成されたことを特徴とする請求項1記載の脈管用ステント。
- 上記糸の表面に、X線不透過剤、抗血栓剤、その他新生内膜の加増殖を抑制することを目的とする薬剤、β線を放射する放射線源、γ線を放射する放射線源のうちの1又は2以上が被着されたことを特徴とする請求項1記載の脈管用ステント。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008234592A JP4889699B2 (ja) | 1998-09-08 | 2008-09-12 | 脈管用ステント |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25427898 | 1998-09-08 | ||
JP1998254278 | 1998-09-08 | ||
JP2008234592A JP4889699B2 (ja) | 1998-09-08 | 2008-09-12 | 脈管用ステント |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000568542A Division JP4889151B2 (ja) | 1998-09-08 | 1999-09-08 | 脈管用ステント |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2008296041A true JP2008296041A (ja) | 2008-12-11 |
JP2008296041A5 JP2008296041A5 (ja) | 2009-01-29 |
JP4889699B2 JP4889699B2 (ja) | 2012-03-07 |
Family
ID=17262754
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000568542A Expired - Lifetime JP4889151B2 (ja) | 1998-09-08 | 1999-09-08 | 脈管用ステント |
JP2008234591A Expired - Lifetime JP4889698B2 (ja) | 1998-09-08 | 2008-09-12 | 脈管用ステント糸 |
JP2008234592A Expired - Lifetime JP4889699B2 (ja) | 1998-09-08 | 2008-09-12 | 脈管用ステント |
JP2008234590A Pending JP2008307405A (ja) | 1998-09-08 | 2008-09-12 | 脈管用ステント糸の製造方法 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000568542A Expired - Lifetime JP4889151B2 (ja) | 1998-09-08 | 1999-09-08 | 脈管用ステント |
JP2008234591A Expired - Lifetime JP4889698B2 (ja) | 1998-09-08 | 2008-09-12 | 脈管用ステント糸 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008234590A Pending JP2008307405A (ja) | 1998-09-08 | 2008-09-12 | 脈管用ステント糸の製造方法 |
Country Status (9)
Country | Link |
---|---|
US (4) | US6500204B1 (ja) |
EP (4) | EP2138136A3 (ja) |
JP (4) | JP4889151B2 (ja) |
KR (1) | KR100617375B1 (ja) |
CN (1) | CN1271979C (ja) |
AU (1) | AU760819B2 (ja) |
CA (1) | CA2308434C (ja) |
ES (2) | ES2620130T3 (ja) |
WO (1) | WO2000013737A1 (ja) |
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US8088060B2 (en) | 2000-03-15 | 2012-01-03 | Orbusneich Medical, Inc. | Progenitor endothelial cell capturing with a drug eluting implantable medical device |
US8460367B2 (en) | 2000-03-15 | 2013-06-11 | Orbusneich Medical, Inc. | Progenitor endothelial cell capturing with a drug eluting implantable medical device |
AU2001267075A1 (en) * | 2000-06-13 | 2001-12-24 | Scimed Life Systems, Inc. | Disintegrating stent and method of making same |
JP2002200175A (ja) * | 2000-12-27 | 2002-07-16 | Gunze Ltd | 生体管路ステント |
JP4707227B2 (ja) * | 2000-12-27 | 2011-06-22 | グンゼ株式会社 | 生体管路ステント |
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Also Published As
Publication number | Publication date |
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EP2138137A2 (en) | 2009-12-30 |
EP2138135A3 (en) | 2014-05-07 |
US20030055488A1 (en) | 2003-03-20 |
US7066952B2 (en) | 2006-06-27 |
AU5647799A (en) | 2000-03-27 |
CA2308434C (en) | 2008-02-05 |
JP4889151B2 (ja) | 2012-03-07 |
EP1033145A1 (en) | 2000-09-06 |
KR20010031832A (ko) | 2001-04-16 |
EP2138135A2 (en) | 2009-12-30 |
EP2138137A3 (en) | 2013-06-12 |
EP2138136A3 (en) | 2014-05-28 |
CA2308434A1 (en) | 2000-03-16 |
ES2620130T3 (es) | 2017-06-27 |
JP2008307405A (ja) | 2008-12-25 |
EP2138136A2 (en) | 2009-12-30 |
AU760819B2 (en) | 2003-05-22 |
CN1277560A (zh) | 2000-12-20 |
WO2000013737A1 (fr) | 2000-03-16 |
JP4889699B2 (ja) | 2012-03-07 |
US7335226B2 (en) | 2008-02-26 |
JP4889698B2 (ja) | 2012-03-07 |
EP1033145A4 (en) | 2009-07-22 |
US20040215330A1 (en) | 2004-10-28 |
EP2138135B1 (en) | 2016-12-21 |
CN1271979C (zh) | 2006-08-30 |
KR100617375B1 (ko) | 2006-08-29 |
ES2527282T3 (es) | 2015-01-22 |
US7331988B2 (en) | 2008-02-19 |
JP2009000553A (ja) | 2009-01-08 |
US20030060874A1 (en) | 2003-03-27 |
US6500204B1 (en) | 2002-12-31 |
EP1033145B1 (en) | 2014-12-17 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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