JP5227170B2 - ステントを小孔に配置するための装置 - Google Patents
ステントを小孔に配置するための装置 Download PDFInfo
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- 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
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- 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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
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- A—HUMAN NECESSITIES
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- 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
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- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
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- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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- A—HUMAN NECESSITIES
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- 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
- A61M25/00—Catheters; Hollow probes
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- A61M25/1011—Multiple balloon catheters
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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Description
また他の実施の形態では、装置10は2つを超える数のバルーン(図示せず)を含み得る。この場合、バルーンは、展開中にステントが例えば所望の状態に膨脹し、フレアとなり、形状になるように、独立して膨脹してもよい。
例えば、基端バルーンを最初に膨張し、その後、例えばカテーテルの先端に向かって順番に個々のバルーンを膨張して、小孔及び/又はブランチ内でステントを所望の形状に拡大してもよい。
Claims (17)
- 体腔の小孔に人工器官を配置するための装置において、
基端と、体腔に導入するための大きさの末端と、該基端と末端との間を伸び、それによって長軸を形成する第1及び第2のルーメンとを構成する伸長部と、
前記伸長部の末端に取り付けられた基端と末端、及び該基端と末端との間の中間部とを有し、前記第1のルーメンと連通する内部を有する第1膨張可能部であって、該第1膨張可能部が膨張した際に前記中間部が実質的に均一な断面を有する第1膨張可能部と、
前記伸長部の末端にある、前記第2のルーメンと連通する内部を有する第2膨張可能部であって、前記第1膨張可能部の基端よりも基端側で前記伸長部の末端に取り付けられた基端と、該基端近傍の基端部位と、前記第1膨張可能部の末端の近傍となるよう該第1膨張可能部の中間部の上に延びる末端とを有する第2膨張可能部と、
前記第2膨張可能部の末端と前記第1膨張可能部の中間部とを囲む第1の部位と、前記中間部から基端側に延びる前記第2膨張可能部の基端部位の末端表面を囲む第2の部位とを有する人工器官であって、前記第1の部位が第1の長さを有し、前記第2の部位が第2の長さを有し、該第2の長さが前記第1の長さよりも短く、前記第1の部位が膨張する際に第2の部位よりも大きな力を必要とする材料からなる人工器官とを備え、
前記第2膨張可能部は、前記第1の部位が収縮状態のままで前記第2の部位を拡張状態にまで膨張させるために、前記第1膨張可能部と独立に膨張可能であり、前記第2膨張可能部の基端部位の末端表面が半径方向外方に向けて前記第1膨張可能部の中間部より基端側に膨張するよう、前記第2膨張可能部は膨張した状態で予め定められた大きさまで膨張する弾力性のない材料から形成され、前記人工器官は、前記第2の部位が半径方向外方に向けて前記第1の部位より基端側にフレア状態に拡張するよう、前記第2膨張可能部の基端部位の末端表面を覆い、その後前記第1膨張可能部は、前記第1の部位を拡張状態の第2の部位より小さい拡張状態にまで膨張させるよう膨張可能である装置。 - さらに、前記第2膨張可能部が膨張している間、前記第1の部位を収縮した状態で維持するための拘束部を有する請求項1に記載の装置。
- 前記拘束部は、
前記第1の部位の上に横たわり、前記第1の部位を覆う第1の位置と前記第1の部位を覆わない第2の位置との間を移動可能な管状部を有する請求項2に記載の装置。 - 前記管状部は、前記第2の部位を覆う第3の位置と、前記第1の位置との間で移動可能である請求項3に記載の装置。
- 前記第1膨張可能部の中間部は少なくとも前記第1の長さと同じ長さを有する請求項1に記載の装置。
- 前記伸長部は、前記基端のポートと、前記第1及び第2のルーメンの少なくとも1つを前記ポートに選択的に接続するバルブとを含む請求項1に記載の装置。
- 前記バルブは、前記第1及び第2のルーメンの両方が前記ポートに接続される位置に移動可能であり、それによって、前記第1及び第2の膨張可能部は、実質的に同時に膨張させられ又は収縮させられる請求項6に記載の装置。
- 体腔の小孔に人工器官を配置するための装置において、
基端と、体腔に導入するための大きさの末端と、該基端と末端との間を伸びる長軸とを有する伸長部と、
前記伸長部の末端に取り付けられる基端及び末端と、先細りの末端部位と、前記基端と先細りの末端部位との間に延びる中間部とを備えた第1膨張部であって、前記中間部が、自身の上で管状の人工器官の第1の部位を受け入れるための長さと、膨張した際に実質的に均一な断面とを有する第1膨張可能部と、
前記第1膨張可能部の近傍で伸長部の末端にある第2膨張可能部であって、該第2膨張可能部が、前記第1膨張可能部の基端よりも基端側で前記伸長部の末端に取り付けられた基端と、該基端近傍の基端部位と、第2膨張可能部の末端が前記第1膨張可能部の末端の近傍となるよう該第1膨張可能部の中間部と先細りの末端部位との上に延びる末端とを有し、前記第1膨張可能部が収縮状態である間、前記人工器官の第2の部位を拡張状態に膨張させるために、伸長部の基端側からの作用で前記第1膨張可能部と独立に膨張可能である第2膨張可能部とを備え、
小孔内での人工器官の位置付けを容易にするべく該人工器官の第2の部位をフレア状態に膨張させるため、前記第2膨張可能部の基端部位が半径方向外方で前記中間部から基端側に膨張する末端表面を形成するよう、前記第2膨張可能部は膨張した状態で予め定められた大きさまで膨張する弾力性のない材料から形成され、
前記第1膨張可能部がその後、前記人工器官の第1の部位を前記第2の部位の膨張状態よりも小さい膨張状態まで膨張させるよう膨張可能である装置。 - 体腔の小孔に人工器官を配置するための装置において、
基端と、体腔に導入するための大きさの末端と、前記基端と末端との間を伸びる第1と第2のルーメンとを有し、これにより長軸を形成する伸長部と、
前記伸長部の末端に取り付けられる基端及び末端と、該両端の間の中間部とを備えた第1膨張可能部であって、前記第1のルーメンと連通する内部を有し、前記中間部は、前記第1膨張可能部が膨張したときに実質的に均一の断面を有する第1膨張可能部と、
前記伸長部の末端にある第2膨張可能部であって、該第2膨張可能部が、前記第1膨張可能部の基端よりも基端側で前記伸長部の末端に取り付けられた基端と、該基端近傍の基端部位と、第2膨張可能部の末端が前記第1膨張可能部の末端の近傍となるよう該第1膨張可能部の中間部の上に延びる末端とを有する第2膨張可能部とを備え、
前記第2膨張可能部は、該第2膨張可能部の基端部位の末端表面が半径方向外方で前記第1膨張可能部の中間部より基端側に膨張するよう、膨張した状態で予め定められた大きさまで膨張する弾力性のない材料から形成され、
前記第2膨張可能部は、前記第1膨張可能部が収縮状態にある間に、該第2膨張可能部が予め定められた大きさに膨張可能となるよう、前記第2のルーメンと連通する内部を有し、
前記第1膨張可能部がその後、前記中間部を囲む人工器官を体腔内で拡大された状態に膨張させるよう膨張可能である装置。 - 前記第1膨張可能部の中間部を囲む第1の部位と、前記第2膨張可能部の基端部位の末端表面を囲む第2の部位とを有する人工器官をさらに備え、前記第2膨張可能部が予め定められた大きさに膨張したときに、前記第2の部位が前記第1の部位から外側に向けてテーパ状のフレア状態を形成する、請求項8又は9に記載の装置。
- 前記第1膨張可能部の中間部の上に延びる前記第2膨張可能部の末端が、前記第1膨張可能部の中間部に取付けられている、請求項1から10のいずれか一に記載の装置。
- 前記装置が、前記伸長部の基端に取付けられた流体源をさらに備え、該流体源が前記第1及び第2のルーメンを介して前記第1及び第2膨張可能部の内部と連通し、該流体源は
前記伸長部の末端を分枝血管の小孔近傍の主血管内に導いた後、前記人工器官の第1の部位が収縮状態にある間に、該人工器官の第2の部位を前記第1の部位から半径方向外方にフレア状態に拡大するよう、前記第2膨張可能部を予め定められた大きさに膨張させ、
その後、前記末端を小孔内に導いた後に、前記膨張した第2の部位を前記小孔を囲む主血管の壁に接触させ、前記第1膨張可能部が前記人工器官の第1の部位を分枝血管の壁に接触させるよう該第1膨張可能部を膨張させるよう構成されている、請求項1−7、9のいずれか一に記載の装置。 - 前記流体源が、前記人工器官の第2の部位をさらに膨張させるため、前記第1の膨張可能部を膨張させた後、前記第2膨張可能部をさらに膨張させるよう構成されている、請求項12に記載の装置。
- 前記第2膨張可能部が予め定められた大きさに膨張した後、前記伸長部の末端が十分な力で前記小孔内に向けられ、前記第2の部位が少なくとも部分的に該小孔の形状に適合するよう、前記第2膨張可能部が適合性材料もしくは半適合性材料からなる、請求項12又は13に記載の装置。
- 前記第2膨張可能部を膨張させるために必要な内圧が、前記第1膨張可能部を膨張させるために必要な内圧よりも小さい、請求項1−14のいずれか一に記載の装置。
- 前記人工器官が前記第1及び第2膨張可能部により塑性変形が可能であり、前記第2の部位が前記第1の部位よりも容易に塑性変形が可能であり、第2膨張部材が第1膨張可能部材よりも低い圧力を使用して膨張可能である、請求項1−15のいずれか一に記載の装置。
- 前記両膨張可能部が膨張した際に、前記第2膨張可能部の基端の末端表面が前記第1膨張可能部の中間部から半径方向外方に膨張するよう、前記第1膨張可能部が、前記第2膨張可能部よりも小さい拡張状態で膨張可能である、請求項1−16のいずれか一に記載の装置。
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US11/136,266 | 2005-05-23 | ||
PCT/US2006/020105 WO2006127824A1 (en) | 2005-05-23 | 2006-05-23 | Apparatus and methods for delivering a stent into an ostium |
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EP (1) | EP1901797B8 (ja) |
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- 2006-05-23 WO PCT/US2006/020105 patent/WO2006127824A1/en active Application Filing
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- 2006-05-23 JP JP2008513676A patent/JP5227170B2/ja active Active
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2011
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US7862601B2 (en) | 2011-01-04 |
EP1901797A1 (en) | 2008-03-26 |
US20060265041A1 (en) | 2006-11-23 |
WO2006127824A9 (en) | 2007-03-15 |
CA2609176A1 (en) | 2006-11-30 |
EP1901797B8 (en) | 2013-08-21 |
EP1901797B1 (en) | 2013-07-03 |
US20120004717A1 (en) | 2012-01-05 |
WO2006127824A1 (en) | 2006-11-30 |
JP2008541872A (ja) | 2008-11-27 |
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