JP4642412B2 - 血管狭窄を治療するための自己拡張型ステント及びステントデリバリーシステム - Google Patents
血管狭窄を治療するための自己拡張型ステント及びステントデリバリーシステム Download PDFInfo
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- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
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- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
- A61F2002/9511—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument the retaining means being filaments or wires
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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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61F2002/9665—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod with additional retaining means
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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
- A61F2230/00—Geometry 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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- 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
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Description
1. 自己拡張型ステント及びステントデリバリーシステムであって、バルーンカテーテル、細長いコア部材、及び自己拡張型ステントを含み、
前記バルーンカテーテルが、デリバリー内腔、膨張用内腔、先端部、及びその先端部分に取り付けられ、前記膨張用内腔に連通した膨張可能なバルーンを有する細長いカテーテルから成り、
前記細長いコア部材が、前記細長いカテーテルの前記デリバリー内腔内にスライド可能に配置され、その細長いコア部材の周りに配置された基端円筒部材及び先端円筒部材を含み、前記先端円筒部材が、所定の長さを有するギャップを画定するように前記基端円筒部材の先端側に離間して配置されており、
前記自己拡張型ステントが、互いに連結された複数のストラット部材によって形成された複数のセルを含む薄い壁部と前記複数のストラット部材の1つに配置された円筒状アンカー部材とを有する小径の骨格管状部材からなり、前記円筒状アンカー部材が、前記基端円筒部材と前記先端円筒部材のギャップの長さよりも短い長さを有しており、前記円筒状アンカー部材が前記基端円筒部材と前記先端円筒部材の間の前記ギャップ内にインターロックして前記自己拡張型ステントが前記細長いコア部材上に保持されるように、前記自己拡張型ステントが前記円筒部材の一方に取り付けられていることを特徴とする自己拡張型ステント及びステントデリバリーシステム。
2. 前記細長いコア部材がワイヤの形態をとることを特徴とする実施態様1に記載の自己拡張型ステント及びステントデリバリーシステム。
3. 前記骨格管状部材が、前記複数のストラット部材の1つに形成されたスレッドを含み、前記円筒状アンカー部材が、前記スレッドに巻き付けられた、放射線不透過性材料から成る螺旋状に巻かれたコイルの形態をとることを特徴とする実施態様2に記載の自己拡張型ステント及びステントデリバリーシステム。
4. 前記自己拡張型ステントが、8個の円筒状アンカー部材を含み、前記各円筒状アンカー部材が、前記8個の円筒状アンカー部材のそれぞれに形成されたスレッドに巻き付けられた、放射線不透過性材料から成る螺旋状に巻かれたコイルの形態をとることを特徴とする実施態様2に記載の自己拡張型ステント及びステントデリバリーシステム。
5. 自己拡張型ステント及びステントデリバリーシステムであって、
デリバリー内腔、先端部分、及びその先端部分に取り付けられた膨張可能なバルーンを有する細長いカテーテルから成るバルーンカテーテルと、
前記細長いカテーテルの前記デリバリー内腔内にスライド可能に配置された、径方向外向きに延びたストッパー部材を有する細長いコア部材と、
前記細長いコア部材に取り付けられ、前記ストッパー部材との係合により、前記細長いコア部材が前記デリバリー内腔内を移動する時にそのデリバリー内腔内を移動できる自己拡張型ステントとを含むことを特徴とする自己拡張型ステント及びステントデリバリーシステム。
6. 前記細長いコア部材がワイヤの形態をとることを特徴とする実施態様5に記載の自己拡張型ステント及びステントデリバリーシステム。
7. 前記バルーンカテーテルが、前記膨張可能なバルーンと連通した膨張用内腔を含むことを特徴とする実施態様6に記載の自己拡張型ステント及びステントデリバリーシステム。
8. 前記ストッパー部材が、前記細長いコア部材の周りに配置された円筒コイルの形態をとることを特徴とする実施態様7に記載の自己拡張型ステント及びステントデリバリーシステム。
9. 前記自己拡張型ステントが、互いに連結された複数のストラット部材によって形成された複数のセルを含む薄い壁部と前記複数のストラット部材の1つの周りに配置された円筒状アンカー部材とを有する小径の骨格管状部材から成ることを特徴とする実施態様8に記載の自己拡張型ステント及びステントデリバリーシステム。
10. 狭窄を治療する方法であって、
デリバリー内腔、先端部分、及びその先端部分に取り付けられた膨張可能なバルーンを有する細長いカテーテルから成るバルーンカテーテルと、前記細長いカテーテルのデリバリー内腔内に配置された、径方向外向きに延びたストッパー部材を有する細長いコア部材と、前記細長いコア部材に取り付けられ、前記ストッパー部材との係合により、前記細長いコア部材が前記デリバリー内腔内を移動する時にそのデリバリー内腔内を移動できる自己拡張型ステントとを用意するステップと、
前記バルーンカテーテルを患者の血管内に挿入するステップと、
前記バルーンカテーテルを前記血管内を進めて、前記バルーンカテーテルを前記血管内の狭窄部にわたって配置するステップと、
前記細長いコア部材に取り付けられた前記自己拡張型ステントを前記細長いカテーテルの前記デリバリー内腔内に挿入し、前記自己拡張型ステント及び前記細長いコア部材を前記デリバリー内腔内を先端側に進めて、前記自己拡張型ステントが前記狭窄部にほぼ整合するようにするステップと、
前記バルーンを膨張させるステップと、
前記細長いカテーテルを基端側に引き戻して、前記自己拡張型ステントを前記血管内で拡張させるステップと、
前記自己拡張型ステントを前記細長いコア部材から外すステップと、
前記バルーンカテーテル及び前記細長いコア部材を前記患者の前記血管から引き抜くステップとを含むことを特徴とする方法。
前記バルーンカテーテルを患者の血管内に挿入するステップと、
前記バルーンカテーテルを前記血管内を先端側に進めて、前記バルーンカテーテルを前記血管内の狭窄部にわたって配置するステップと、
前記細長いコアワイヤに取り付けられた前記自己拡張型ステントを前記細長いカテーテルの前記デリバリー内腔内に挿入し、前記自己拡張型ステント及び前記細長いコアワイヤを前記デリバリー内腔内を先端側に進めて、前記自己拡張型ステントが前記狭窄部にほぼ整合するようにするステップと、
前記バルーンを膨張させるステップと、
前記バルーンを収縮させるステップと、
前記細長いカテーテルを基端側に引き戻して、前記自己拡張型ステントを前記血管内で拡張させるステップと、
前記自己拡張型ステントを前記細長いコアワイヤから外すステップと、
前記細長いカテーテル及び前記細長いコアワイヤを前記患者の前記血管から引き抜くステップとを含むことを特徴とする方法。
ガイドワイヤを用いて前記バルーンカテーテルを患者の血管内に挿入するステップと、
前記ガイドワイヤ及び前記バルーンカテーテルを進めて、前記バルーンカテーテルを前記血管内の狭窄部にわたって配置するステップと、
前記ガイドワイヤを取り出すステップと、
前記細長いコア部材に取り付けられた前記自己拡張型ステントを前記細長いカテーテルの前記デリバリー内腔内に挿入し、前記自己拡張型ステント及び前記細長いコア部材を前記デリバリー内腔内を先端側に進めて、前記自己拡張型ステントが前記狭窄部にほぼ整合するようにするステップと、
前記細長いカテーテルの前記膨張内腔内に流体を注入して前記バルーンを膨張させるステップと、
前記膨張内腔内から前記流体を除去して前記バルーンを収縮させるステップと、
前記細長いカテーテルを基端側に引き戻して、前記自己拡張型ステントを前記血管内で拡張させるステップと、
前記円筒状アンカー部材を前記ギャップから外して、前記自己拡張型ステントを前記細長いコア部材から解放するステップと、
前記バルーンカテーテル及び前記細長いコア部材を前記患者の前記血管から引き抜くステップとを含むことを特徴とする方法。
3 外側カテーテル
7 デリバリー内腔
9 膨張可能なバルーン
10 外側カテーテル先端部分
14 コア部材
16 基端円筒部材
18 先端円筒部材
20 自己拡張型ステント
22 コア部材先端部
24 捕捉バスケット
40 第1のギャップ
42 第2のギャップ
38 中間円筒部材
44 基端ストラット部材
46 先端ストラット部材
48 ステント基端部分
52 アンカー部材
54 金属フレーム
56 メッシュ本体
58 血管
60 膨張用内腔
62 狭窄部
Claims (6)
- 自己拡張型ステント及びステントデリバリーシステムであって、バルーンカテーテル、細長いコア部材、及び自己拡張型ステントを具備し、
前記バルーンカテーテルが、デリバリー内腔、膨張用内腔、先端部、及びその先端部分に取り付けられて前記膨張用内腔に連通した膨張可能なバルーンを有する細長いカテーテルを具備し、
前記細長いコア部材が、前記細長いカテーテルの前記デリバリー内腔内にスライド可能に配置され、その細長いコア部材の周りに配置された基端円筒部材、その細長いコア部材の周りに配置され所定の長さを有するギャップを画定するように前記基端円筒部材の先端側に離間して配置された先端円筒部材、および前記基端円筒部材および前記先端円筒部材の間に少なくとも前記基端円筒部材から離間してギャップを形成するように配置された中間円筒部材を具備し、
前記自己拡張型ステントが、互いに連結された複数のストラット部材によって形成された複数のセルを含む薄い壁部を有する小径の骨格管状部材と、前記複数のストラット部材の1つに配置された円筒状アンカー部材とを具備し、
前記円筒状アンカー部材が、少なくとも前記中間円筒部材と前記基端円筒部材との間の前記ギャップの長さよりも短い長さを有しており、前記円筒状アンカー部材が、少なくとも前記中間円筒部材と前記基端円筒部材との間の前記ギャップ内にインターロックして前記自己拡張型ステントが前記細長いコア部材上に保持される、自己拡張型ステント及びステントデリバリーシステム。 - 請求項1に記載の自己拡張型ステント及びステントデリバリーシステムにおいて、
前記細長いコア部材がワイヤの形態をとる、自己拡張型ステント及びステントデリバリーシステム。 - 請求項1または2に記載の自己拡張型ステント及びステントデリバリーシステムにおいて、
前記骨格管状部材が、前記複数のストラット部材の1つに形成されたスレッドを含み、
前記円筒状アンカー部材が、前記スレッドに巻き付けられた、放射線不透過性材料から成る螺旋状に巻かれたコイルの形態をとる、自己拡張型ステント及びステントデリバリーシステム。 - 請求項1または2に記載の自己拡張型ステント及びステントデリバリーシステムにおいて、
前記自己拡張型ステントが、8個の円筒状アンカー部材を含み、前記各円筒状アンカー部材が、8個のストラット部材のそれぞれに形成されたスレッドに巻き付けられた、放射線不透過性材料から成る螺旋状に巻かれたコイルの形態をとる、自己拡張型ステント及びステントデリバリーシステム。 - 請求項1〜4のいずれかに記載の自己拡張型ステント及びステントデリバリーシステムにおいて、
前記基端円筒部材、前記中間円筒部材、および前記先端円筒部材の少なくとも一つが、前記細長いコア部材の周りに配置された円筒コイルの形態をとる、自己拡張型ステント及びステントデリバリーシステム。 - 請求項1〜5のいずれかに記載の自己拡張型ステント及びステントデリバリーシステムにおいて、
前記自己拡張型ステントが、円筒状アンカー部材を当該ステント両端に具備し、
前記中間円筒部材が、前記基端円筒部材および前記先端円筒部材のそれぞれから離間して前記中間円筒部材の両端にギャップを形成し、前記円筒状アンカー部材のそれぞれが前記ギャップのいずれかとインターロックする、自己拡張型ステント及びステントデリバリーシステム。
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US10/651,569 US20050049668A1 (en) | 2003-08-29 | 2003-08-29 | Self-expanding stent and stent delivery system for treatment of vascular stenosis |
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JP2005074230A JP2005074230A (ja) | 2005-03-24 |
JP4642412B2 true JP4642412B2 (ja) | 2011-03-02 |
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US (1) | US20050049668A1 (ja) |
EP (1) | EP1518515A1 (ja) |
JP (1) | JP4642412B2 (ja) |
CA (1) | CA2477927C (ja) |
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CA2477927C (en) | 2014-02-11 |
EP1518515A1 (en) | 2005-03-30 |
US20050049668A1 (en) | 2005-03-03 |
CA2477927A1 (en) | 2005-02-28 |
JP2005074230A (ja) | 2005-03-24 |
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