JP3677389B2 - 冠状動脈ステント - Google Patents
冠状動脈ステント Download PDFInfo
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- JP3677389B2 JP3677389B2 JP13405298A JP13405298A JP3677389B2 JP 3677389 B2 JP3677389 B2 JP 3677389B2 JP 13405298 A JP13405298 A JP 13405298A JP 13405298 A JP13405298 A JP 13405298A JP 3677389 B2 JP3677389 B2 JP 3677389B2
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- wire
- compartment
- stent
- coronary stent
- circumferential direction
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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
- 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
-
- 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
-
- 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
- A61F2002/91533—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 characterised by the phase between adjacent bands
-
- 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
- A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Optics & Photonics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Description
【発明の属する技術分野】
本発明は、冠状動脈ステント、特に、網目構造の壁を持つ管状の柔軟性胴体を含む冠状動脈ステントに関し、前述の網目構造が、網目を構成する線材により構成されかつ各々が隣接する隔室に結合網目を介して連結されている複数の隣接隔室を含んでいる冠状動脈ステントに関する。
【0002】
【従来の技術】
従来から種々の異なるタイプの冠状動脈ステントが知られている。ステントは物理的に適合する物質からできた血管補綴物を形成する。ステント又はステント補綴物は、血管又は他の身体のオリフィスを拡張するため、さらに前述の血管を拡張した状態に維持するために使用される。この目的のために、ステントは非拡張状態で患者の身体に配置され、次に適当な手段、例えばバルーンカテーテルで拡張される。拡張状態では、ステントの個々の網目を構成する線材部分はステントが永続的に拡張した形を続けるように変形される。
【0003】
この様なタイプのステントは例えばドイツ実用新案登録第29702671号に記載されている。
ステントを構成する場合、ステントは非拡張状態で患者の身体に導入して配置できる程充分に小さい直径を持たねばならないという重要な問題がある。ステントは、例えば血管の形をたどる事ができるように、ある程度縦軸方向に沿って柔軟でなければならない。拡張状態では、ステントは外径がかなり大きくなるように拡張されねばならない。この様な拡張は、裂け目又はそれと同様のものが形成されないように個々の網目を構成する線材部分を変形する事により達成される。
【0004】
【発明が解決しようとする課題】
本発明の目的は、拡張でき、しかも容易に製造できて安全に使用できる単純な構造を有する上述のタイプのステントを提供する事である。
【0005】
【課題を解決するための手段】
本発明に係る冠状動脈ステントでは、お互いから離れるように移動可能な第1、第2隔室はステントの軸方向に交互に配置され、同一の隔室は円周方向に隣り合うように設けられる。ステントの非拡張状態では、第1隔室の軸方向に対向する2つの V 形状の線材部分を有し、第2隔室の軸方向に対向する2つの V 形状の線材部分と、2つの V 形状の線材を連結する線材であって互いに逆に湾曲した弧形状の部分が主に円周方向において互いに重なるような形状の線材部分とを有している。
【0006】
本発明のステントは幾つかの重要な利点により特徴づけられる。
非拡張状態では、異なる隔室を交互に配置する事により、一方では充分な強さが他方では充分な柔軟性が得られる。異なる隔室の網目を構成する線材部分は異なる拡張特性を持つので、単純且つ信頼できる方法でステントを拡張できる。従って、異なる隔室は網目を構成する線材の一致した変形を可能とし、その結果裂け目等の形成を防止できる。
【0007】
第1隔室の軸方向に対向する2つの V 形状の線材部分を、円周方向に延びるテープ状の部分を形成するようにV形状が複数個連結するようにすれば、特に有利である。このテープ状の部分はステントの強度を増し、又拡張状態での寸法の安定性を保証する。
第2隔室の網目を構成する線材部分は異なる構成であるので、網目を構成する線材の異なる拡張特性が可能である。V形状が複数個連結する線材部分は第1隔室と同様の方法で変形できる一方、互いに逆に湾曲した弧形状の部分が主に円周方向において互いに重なるような形状の線材部分はより大きな変形と拡張を可能とする。S形状配置とすることにより、非拡張状態でスペースを節約できるとともに、非常に長い網目部分を提供する事ができる。
【0008】
第1隔室の変形しない線材部分は、好ましくは弧形状で互いに平行に配置され、その結果、特に拡張状態で充分量の隔室の変形と安定性の増大が得られる。
【0009】
【発明の実施の形態】
図1には本発明のステント1の基本構造が示される。ステント1は、図1にその前面が見える壁3を持つ柔軟性管状胴体2を含む。
図2は本発明の網目構造の構成を示す。
図から明らかなように、第1隔室4の列はステント1の円周方向に隣り合うように形成され、また第2隔室5の列も円周方向に隣り合うように形成されている。そして、第1隔室4及び第2隔室5の列はステント1の軸方向において交互に形成されている。
【0010】
複数の第1隔室4の各々には、V形状が複数個連結する形状又はv形状に配置された網目を構成する線材6が二つの対向する側に形成される。この網目を構成する線材6は円周方向に延びるテープ状の部分を形成している。一方、第1隔室4の別の両側は互いに平行な弧状の網目を構成する線材9により形成されている。この弧状の網目を構成する線材9は各々同一に形成され、変形しない。
第2隔室5の形状及び構成は、隔室5を構成する互いに逆に湾曲した弧形状の部分が主に円周方向において互いに重なるような形状の線材部分が設けられている点が第1隔室4のそれとは異なる。
【0011】
図4に示されるように、v形状又はV形状が複数個連結する形状の網目を構成する線材7が隔室5の二つの対向する両側に形成され、一方別の二つの対向部分にはそこにおいて互いに逆に湾曲した弧形状の部分が主に円周方向において互いに重なるような形状の網目を構成する線材8が形成されている。
【0012】
本発明の構造の冠状動脈ステント1は、非拡張状態では縦方向、横方向共に非常に柔軟性がある。網目を構成する線材の配置とデザインが良好な拡張特性と又拡張状態での高度の寸法安定性を生み出す。
本発明のステントは物理的に適合する物質、特にステンレススチールにより形成されている。本発明は例証する実施形態に限られるものではない。むしろ、多くの変形と改良が本発明の範囲内で可能である。
【0013】
【発明の効果】
以上のように本発明のステントでは、異なる隔室を交互に配置しているので、十分な強さと柔軟性が得られる。
【図面の簡単な説明】
【図1】 本発明によるステントの基本構造を模式的に示す図。
【図2】 非拡張状態でステントの壁の網目構造を示す図。
【図3】 第1隔室の拡大図。
【図4】 第2隔室の拡大図。
【符号の説明】
1 ステント
2 柔軟性管状胴体
4 第1隔室
5 第2隔室
6,7,8,9 網目を構成する線材
Claims (7)
- 網目構造の壁を持つ管状柔軟性胴体を含むとともに、前記網目構造が網目を構成する線材により構成されかつ各々が前記線材を介して隣接する隔室に連結している複数の隣接隔室を含み、
前記ステントの軸方向において互いに異なる第1及び第2隔室が前記ステントの軸方向に交互に配置され、同一の隔室が円周方向に隣り合うように設けられ、
前記ステントの非拡張状態で前記第1隔室は軸方向に対向する2つの V 形状の線材部分を有し、
前記ステント非拡張状態で前記第2隔室は軸方向に対向する2つの V 形状の線材部分と、前記2つの V 形状の線材を連結する線材であって互いに逆に湾曲した弧形状の部分が主に円周方向において互いに重なるような形状の線材部分とを有している、
ことを特徴とする冠状動脈ステント。 - 前記第1隔室の前記網目を構成する線材部分は、円周方向に対向する V 形状が複数個連結して配置されていることを特徴とする、請求項1に記載の冠状動脈ステント。
- 前記第1隔室の V 形状が連結して配置された線材部分は、円周方向に延びるテープ状の部分を形成していることを特徴とする、請求項1に記載の冠状動脈ステント。
- 前記第2隔室の円周方向に対向する V 形状が複数個連結して配置されていることを特徴とする、請求項1に記載の冠状動脈ステント。
- 前記弧形状の部分が実質的に S 形状をしていることを特徴とする、請求項4に記載の冠状動脈ステント。
- 前記第1隔室は変形しない線材部分をさらに有しており、前記変形しない線材部分が弧形状をしていることを特徴とする、請求項1から5のいずれかに記載の冠状動脈ステント。
- 前記第1隔室の前記変形しない線材部分が各々同一に作られ、お互いに平行に配置されていることを特徴とする、請求項6に記載の冠状動脈ステント。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29708689 | 1997-05-15 | ||
DE29708689U DE29708689U1 (de) | 1997-05-15 | 1997-05-15 | Koronarer Stent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10323396A JPH10323396A (ja) | 1998-12-08 |
JP3677389B2 true JP3677389B2 (ja) | 2005-07-27 |
Family
ID=8040415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13405298A Expired - Lifetime JP3677389B2 (ja) | 1997-05-15 | 1998-05-15 | 冠状動脈ステント |
Country Status (9)
Country | Link |
---|---|
US (1) | US6068656A (ja) |
EP (1) | EP0878174B1 (ja) |
JP (1) | JP3677389B2 (ja) |
AT (1) | ATE213611T1 (ja) |
CA (1) | CA2237466C (ja) |
DE (2) | DE29708689U1 (ja) |
DK (1) | DK0878174T3 (ja) |
ES (1) | ES2172055T3 (ja) |
PT (1) | PT878174E (ja) |
Families Citing this family (132)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6896696B2 (en) | 1998-11-20 | 2005-05-24 | Scimed Life Systems, Inc. | Flexible and expandable stent |
US7204848B1 (en) | 1995-03-01 | 2007-04-17 | Boston Scientific Scimed, Inc. | Longitudinally flexible expandable stent |
US6602281B1 (en) | 1995-06-05 | 2003-08-05 | Avantec Vascular Corporation | Radially expansible vessel scaffold having beams and expansion joints |
CA2192520A1 (en) * | 1996-03-05 | 1997-09-05 | Ian M. Penn | Expandable stent and method for delivery of same |
US6796997B1 (en) | 1996-03-05 | 2004-09-28 | Evysio Medical Devices Ulc | Expandable stent |
WO1997032544A1 (en) | 1996-03-05 | 1997-09-12 | Divysio Solutions Ulc. | Expandable stent and method for delivery of same |
US6235053B1 (en) | 1998-02-02 | 2001-05-22 | G. David Jang | Tubular stent consists of chevron-shape expansion struts and contralaterally attached diagonal connectors |
US20040106985A1 (en) | 1996-04-26 | 2004-06-03 | Jang G. David | Intravascular stent |
JP4636634B2 (ja) | 1996-04-26 | 2011-02-23 | ボストン サイエンティフィック サイムド,インコーポレイテッド | 脈管内ステント |
US5697971A (en) * | 1996-06-11 | 1997-12-16 | Fischell; Robert E. | Multi-cell stent with cells having differing characteristics |
DE29702671U1 (de) | 1997-02-17 | 1997-04-10 | Jomed Implantate GmbH, 72414 Rangendingen | Stent |
US6033433A (en) | 1997-04-25 | 2000-03-07 | Scimed Life Systems, Inc. | Stent configurations including spirals |
DE29708879U1 (de) * | 1997-05-20 | 1997-07-31 | Jomed Implantate GmbH, 72414 Rangendingen | Koronarer Stent |
EP0884029B1 (en) * | 1997-06-13 | 2004-12-22 | Gary J. Becker | Expandable intraluminal endoprosthesis |
DE29716476U1 (de) | 1997-09-13 | 1997-12-18 | Convent, Gerd, 47829 Krefeld | Stent zur Stenosebehandlung |
US6746476B1 (en) | 1997-09-22 | 2004-06-08 | Cordis Corporation | Bifurcated axially flexible stent |
US6013091A (en) | 1997-10-09 | 2000-01-11 | Scimed Life Systems, Inc. | Stent configurations |
DE19753123B4 (de) * | 1997-11-29 | 2006-11-09 | B. Braun Melsungen Ag | Gefäßstütze |
US5938697A (en) | 1998-03-04 | 1999-08-17 | Scimed Life Systems, Inc. | Stent having variable properties |
DE69942515D1 (de) | 1998-03-04 | 2010-07-29 | Boston Scient Ltd | Stent mit verbesserter Zellkonfiguration |
DE19822157B4 (de) * | 1998-05-16 | 2013-01-10 | Abbott Laboratories Vascular Enterprises Ltd. | Radial aufweitbarer Stent zur Implantierung in ein Körpergefäß |
US6261319B1 (en) | 1998-07-08 | 2001-07-17 | Scimed Life Systems, Inc. | Stent |
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1997
- 1997-05-15 DE DE29708689U patent/DE29708689U1/de not_active Expired - Lifetime
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1998
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- 1998-05-06 AT AT98108278T patent/ATE213611T1/de not_active IP Right Cessation
- 1998-05-06 EP EP98108278A patent/EP0878174B1/de not_active Expired - Lifetime
- 1998-05-06 DK DK98108278T patent/DK0878174T3/da active
- 1998-05-06 PT PT98108278T patent/PT878174E/pt unknown
- 1998-05-13 CA CA002237466A patent/CA2237466C/en not_active Expired - Fee Related
- 1998-05-15 JP JP13405298A patent/JP3677389B2/ja not_active Expired - Lifetime
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ATE213611T1 (de) | 2002-03-15 |
EP0878174B1 (de) | 2002-02-27 |
DE29708689U1 (de) | 1997-07-17 |
CA2237466C (en) | 2005-11-08 |
PT878174E (pt) | 2002-07-31 |
DE59803164D1 (de) | 2002-04-04 |
EP0878174A3 (de) | 1999-07-28 |
JPH10323396A (ja) | 1998-12-08 |
CA2237466A1 (en) | 1998-11-15 |
US6068656A (en) | 2000-05-30 |
ES2172055T3 (es) | 2002-09-16 |
EP0878174A2 (de) | 1998-11-18 |
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