JP6856666B2 - 制御された内部人工器官バルーン膨張 - Google Patents
制御された内部人工器官バルーン膨張 Download PDFInfo
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- JP6856666B2 JP6856666B2 JP2018561667A JP2018561667A JP6856666B2 JP 6856666 B2 JP6856666 B2 JP 6856666B2 JP 2018561667 A JP2018561667 A JP 2018561667A JP 2018561667 A JP2018561667 A JP 2018561667A JP 6856666 B2 JP6856666 B2 JP 6856666B2
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Landscapes
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- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Description
(態様)
(態様1)
第1の終端および第2の終端を有しおよび少なくとも1つの柔軟なコネクターを介して相互に柔軟に接続された複数の環状のステント要素を含むバルーンで膨張可能な内部人工器官と、
その上に前記内部人工器官が集成されるカテーテル集成体と、
を含む、医療集成体であって、
前記カテーテル集成体は、
バルーンと、
前記バルーンに沿ったカバーと、
を含み、
環状のステント要素は前記第1の終端および前記第2の終端の近傍にあり、前記内部人工器官は未展開直径を有する未展開状態から展開直径を有する展開された状態へ展開可能であり、
前記内部人工器官は前記バルーンおよび前記カバーの周りで同軸上に配置されており、
前記バルーンおよび前記カバーの1つまたは2つ以上の部分は前記未展開直径と前記展開直径との間の中間直径に到達し、そこで膨張圧力が少なくとも1気圧増加して前記カバーの降伏強度に打ち勝つまで、前記バルーンおよび前記カバーの前記部分が前記バルーン内の前記膨張圧力を増加させることによって膨らませられおよびほぼ前記中間直径においてほぼ維持される、医療集成体。
(態様2)
前記膨張圧力が少なくとも1気圧増加して前記カバーの降伏強度に打ち勝つまで、前記中間直径に到達する前記バルーンおよび前記カバーの1つまたは2つ以上の部分は前記バルーンおよび前記カバーの終端部分を含み、および、
前記膨張圧力が少なくとも1気圧増加する後まで、前記バルーンおよび前記カバーの中央部分は中間直径より小さいままである、態様1に記載の医療集成体。
(態様3)
前記膨張圧力が少なくとも1気圧増加して前記カバーの降伏強度に打ち勝つまで、前記中間直径に到達する前記バルーンおよび前記カバーの1つまたは2つ以上の部分は前記内部人工器官に隣接した前記バルーンおよび前記カバーの実質的にすべての部分を含み、前記膨張圧力が少なくとも1気圧増加して前記カバーの降伏強度に打ち勝つまで、それぞれの前記複数の環状のステント要素は前記中間直径にほぼ到達するようになっている、態様1に記載の医療集成体。
(態様4)
前記内部人工器官はステントグラフトを含み、
前記柔軟なコネクターはグラフト材料を含み、
複数の環状のステント要素は前記柔軟なコネクターを含む非金属性材料を介してのみ相互に接続されている、態様1に記載の医療集成体。
(態様5)
前記柔軟なコネクターは柔軟な縦方向のコネクターを含む、態様1に記載の医療集成体。
(態様6)
前記未展開状態における前記内部人工器官の周りで測定して前記医療集成体のプロファイルは約5〜約10フレンチである、態様1に記載の医療集成体。
(態様7)
前記未展開状態における前記医療集成体上の前記カバーの厚さは約0.025〜約0.051ミリメーターである、態様6に記載の医療集成体。
(態様8)
前記カバーの半径方向の強度は、前記バルーンの膨張に対して抵抗を提供しおよび前記バルーンの膨張への前記内部人工器官の可変抵抗に逆らって前記未展開直径から前記展開
直径への膨張の間の前記内部人工器官の一様でない膨張を緩和するように構成されている、態様1に記載の医療集成体。
(態様9)
前記カバーは前記バルーンの全長の周りで前記バルーンを同心円状に取り囲む、態様1に記載の医療集成体。
(態様10)
前記カバーは前記バルーンの中央部分における半径方向の強度と比較して前記バルーンの片方の終端または両方の終端においてより大きな半径方向の強度を提供する、態様1に記載の医療集成体。
(態様11)
前記カバーは前記カバーの前記降伏強度に寄与するフランジブル層の究極強度で前記中間直径において破裂して前記中間直径を超える膨張に抵抗するように設計されたフランジブル層を含む、態様1に記載の医療集成体。
(態様12)
前記カバーは前記カバーの前記降伏強度による膨張に増加した抵抗を提供して前記中間直径を超える膨張に抵抗するように構成された予め伸ばされた層を含む、態様1に記載の医療集成体。
(態様13)
前記バルーンは、
コンプライアント材料と、
半コンプライアント材料と
非コンプライアント材料と、からなる群から選択された材料を含む、態様1に記載の医療集成体。
(態様14)
前記展開直径は少なくとも11ミリメーターである、態様1に記載の医療集成体。
(態様15)
前記カバーは展開の間の隣接した環状のステント要素の一様でない膨張を制限して隣接した環状のステント要素の一様でない膨張による縮小力が前記カバーと前記内部人工器官との間の摩擦力を超えることを防止するように構成されており、および、
隣接した環状のステント要素の前記制限された一様でない膨張により、前記内部人工器官は前記未展開直径から前記展開直径への膨張の間に縮小しない、態様1に記載の医療集成体。
(態様16)
患者の血管の中に医療集成体の遠位末端を挿入することと、
バルーンを遠隔的に膨らませて未展開直径から展開直径へ内部人工器官を拡張させることと、
を含む、内部人工器官の移植方法であって、
前記医療集成体は、
第1の終端および第2の終端を有しおよび少なくとも1つの柔軟なコネクターを介して相互に柔軟に接続された複数の環状のステント要素を含むバルーンで膨張可能な内部人工器官と、
その上に前記内部人工器官が集成されるカテーテル集成体と、
を含み、
前記カテーテル集成体は、
バルーンと、
前記バルーンに沿ったカバーと、
を含み、
環状のステント要素は前記第1の終端および前記第2の終端の近傍にあり、前記内部人工器官は未展開直径を有する未展開状態から展開直径を有する展開された状態へ展開可能であり、
前記内部人工器官は前記バルーンおよび前記カバーの周りに同軸上に位置し、
前記バルーンおよび前記カバーの1つまたは2つ以上の部分は前記未展開直径と前記展開直径との間の中間直径に到達し、そこで膨張圧力が少なくとも1気圧増加して前記カバーの降伏強度に打ち勝つまで、前記バルーンおよび前記カバーの前記部分が前記バルーン内の前記膨張圧力を増加させることによって膨らませられおよびほぼ前記中間直径においてほぼ維持され、
前記方法は、前記医療集成体と伴に、前記患者の前記血管または前記患者の別の血管内の治療部位に前記バルーンにわたって乗せられた前記内部人工器官を送達することをさらに含む、方法。
(態様17)
第1の終端および第2の終端を有するバルーンで膨張可能な内部人工器官を膨張可能なバルーンおよびカバーを含むカテーテル集成体に組み立てることを含む展開システムの製造方法であって、前記内部人工器官は前記バルーンおよび前記カバーにわたって乗せられており前記内部人工器官は前記バルーンの膨張を介して展開可能であり、前記内部人工器官は未展開直径、および展開直径を提供するようになっており、
前記内部人工器官は少なくとも1つの柔軟なコネクターを介して相互に柔軟に接続された複数の環状のステント要素を含み、環状のステント要素は前記第1の終端および前記第2の終端の近傍にあり、前記内部人工器官は未展開直径を有する未展開状態から展開直径を有する展開された状態へ展開可能であり、
前記バルーンおよび前記カバーの1つまたは2つ以上の部分は前記未展開直径と前記展開直径との間の中間直径に到達し、そこで膨張圧力が少なくとも1気圧増加して前記カバーの降伏強度に打ち勝つまで、前記バルーンおよび前記カバーの前記部分が前記バルーン内の前記膨張圧力を増加させることによって膨らませられおよびほぼ前記中間直径においてほぼ維持される、方法。
(態様18)
前記カテーテル集成体への前記内部人工器官の組み立ての前に、前記中間直径に前記バルーンおよび前記カバーを膨らませることによって前記カバーを予め伸ばすことをさらに含む、態様17に記載の方法。
(態様19)
第1の終端および第2の終端を有しおよび少なくとも1つの柔軟なコネクターを介して相互に柔軟に接続された複数の環状のステント要素を含むバルーンで膨張可能な内部人工器官と、
その上に前記内部人工器官が集成されるカテーテル集成体と、
を含む、医療集成体であって、
環状のステント要素は前記第1の終端および前記第2の終端の近傍にあり、前記内部人工器官は未展開直径を有する未展開状態から展開直径を有する展開された状態へ展開可能であり、
前記カテーテル集成体は、
バルーンと、
前記バルーンに連結されたカバーと、
を含み、
前記内部人工器官は前記バルーンおよび前記カバーの周りに同軸上に位置し、
前記展開直径は少なくとも11ミリメーターであり、
前記カバーは展開の間の隣接した環状のステント要素の一様でない膨張を制限して隣接した環状のステント要素の一様でない膨張による縮小力が前記カバーと前記内部人工器官との間の摩擦力を超えることを防止するように構成されており、および、
隣接した環状のステント要素の前記制限された一様でない膨張により、前記内部人工器官は前記未展開直径から前記展開直径への膨張の間に縮小しない、医療集成体。
(態様20)
隣接した環状のステント要素の前記制限された一様でない膨張は前記内部人工器官の縦
軸に対して35°以下の角度となる、態様19に記載の医療集成体。
(態様21)
前記バルーンおよび前記カバーの1つまたは2つ以上の部分は前記未展開直径と前記展開直径との間の中間直径に到達し、そこで膨張圧力は少なくとも1気圧増加して前記カバーの降伏強度に打ち勝つまで前記バルーンおよび前記カバーの前記部分が前記バルーン内の前記膨張圧力を増加させることによって膨らませられおよびほぼ前記中間直径においてほぼ維持される、態様19に記載の医療集成体。
Claims (18)
- 第1の終端および第2の終端を有しおよび少なくとも1つの柔軟なコネクターを介して相互に柔軟に接続された複数の環状のステント要素を含むバルーンで膨張可能な内部人工器官と、
その上に前記内部人工器官が集成されるカテーテル集成体と、
を含む、医療集成体であって、
前記カテーテル集成体は、
バルーンと、
前記バルーンに沿ったカバーと、
を含み、
環状のステント要素は前記第1の終端および前記第2の終端の近傍にあり、前記内部人工器官は未展開直径を有する未展開状態から展開直径を有する展開された状態へ展開可能であり、
前記内部人工器官は前記バルーンおよび前記カバーの周りで同軸上に配置されており、
前記バルーンおよび前記カバーの中央部分が中間直径より小さいままである間に前記バルーンおよび前記カバーの終端部分は前記未展開直径と前記展開直径との間の中間直径に到達し、および膨張圧力が更に少なくとも1気圧増加した際に、前記バルーンおよび前記カバーの前記終端部分は前記カバーの膨張に対する抵抗に打ち勝つまでほぼ前記中間直径においてほぼ維持され、かつ前記バルーン及び前記カバーの前記中央部分は前記終端部分に隣接する側から膨らませられ、前記カバーは前記終端部分および前記中央部分における前記バルーンおよび前記カバーの膨張率を等しくするように作用し、前記膨張圧力によって前記カバーの膨張に対する抵抗に打ち勝って前記カバーが塑性変形することで前記終端部分および前記中央部分が前記中間直径を超えて膨張するようになっている、医療集成体。 - 前記膨張圧力が少なくとも1気圧増加して前記カバーの膨張に対する抵抗に打ち勝つまで、前記中間直径に到達する前記バルーンおよび前記カバーの前記終端部分および前記中央部分は前記内部人工器官に隣接した前記バルーンおよび前記カバーの実質的にすべての部分を含み、前記膨張圧力が少なくとも1気圧増加して前記カバーの膨張に対する抵抗に打ち勝つまで、それぞれの前記複数の環状のステント要素は前記中間直径にほぼ到達するようになっている、請求項1に記載の医療集成体。
- 前記内部人工器官はステントグラフトを含み、
前記柔軟なコネクターはグラフト材料を含み、
複数の環状のステント要素は前記柔軟なコネクターを含む非金属性材料を介してのみ相互に接続されている、請求項1に記載の医療集成体。 - 前記柔軟なコネクターは柔軟な縦方向のコネクターを含む、請求項1に記載の医療集成体。
- 前記未展開状態における前記内部人工器官の周りで測定した前記医療集成体のプロファイルは5〜10フレンチである、請求項1に記載の医療集成体。
- 前記未展開状態における前記医療集成体の前記カバーの厚さは0.025〜0.051ミリメーターである、請求項5に記載の医療集成体。
- 前記カバーの半径方向の強度は、前記バルーンの膨張に対して抵抗を提供しおよび前記バルーンの膨張への前記内部人工器官の可変抵抗に逆らって前記未展開直径から前記展開直径への膨張の間の前記内部人工器官の一様でない膨張を緩和するように構成されている、請求項1に記載の医療集成体。
- 前記カバーは前記バルーンの全長の周りで前記バルーンを同心円状に取り囲む、請求項1に記載の医療集成体。
- 前記カバーは前記バルーンの中央部分における半径方向の強度と比較して前記バルーンの片方の終端または両方の終端においてより大きな半径方向の強度を提供する、請求項1に記載の医療集成体。
- 前記カバーは前記カバーの降伏強度に寄与するフランジブル層の究極強度で前記中間直径において破裂して前記中間直径を超える膨張に抵抗するように設計されたフランジブル層を含む、請求項1に記載の医療集成体。
- 前記カバーは前記カバーの降伏強度による膨張に増加した抵抗を提供して前記中間直径を超える膨張に抵抗するように構成された予め伸ばされた層を含む、請求項1に記載の医療集成体。
- 前記バルーンは、
コンプライアント材料と、
半コンプライアント材料と
非コンプライアント材料と、からなる群から選択された材料を含む、請求項1に記載の医療集成体。 - 前記展開直径は少なくとも11ミリメーターである、請求項1に記載の医療集成体。
- 前記カバーは展開の間の隣接した環状のステント要素の一様でない膨張を制限して隣接した環状のステント要素の一様でない膨張による縮小力が前記カバーと前記内部人工器官との間の摩擦力を超えることを防止するように構成されており、および、
隣接した環状のステント要素の前記制限された一様でない膨張により、前記内部人工器官は前記未展開直径から前記展開直径への膨張の間に縮小しない、請求項1に記載の医療集成体。 - 第1の終端および第2の終端を有するバルーンで膨張可能な内部人工器官を膨張可能なバルーンおよびカバーを含むカテーテル集成体に組み立てることを含む展開システムの製造方法であって、前記内部人工器官は前記バルーンおよび前記カバーにわたって乗せられており前記内部人工器官は前記バルーンの膨張を介して展開可能であり、前記内部人工器官は未展開直径、および展開直径を提供するようになっており、
前記内部人工器官は少なくとも1つの柔軟なコネクターを介して相互に柔軟に接続された複数の環状のステント要素を含み、環状のステント要素は前記第1の終端および前記第2の終端の近傍にあり、前記内部人工器官は未展開直径を有する未展開状態から展開直径を有する展開された状態へ展開可能であり、
前記バルーンおよび前記カバーの中央部分が中間直径より小さいままである間に前記バルーンおよび前記カバーの終端部分は前記未展開直径と前記展開直径との間の中間直径に到達し、および膨張圧力が更に少なくとも1気圧増加した際に、前記バルーンおよび前記カバーの前記終端部分は前記カバーの膨張に対する抵抗に打ち勝つまでほぼ前記中間直径においてほぼ維持され、かつ前記バルーン及び前記カバーの前記中央部分は前記終端部分に隣接する側から膨らませられ、前記カバーは前記終端部分および前記中央部分における前記バルーンおよび前記カバーの膨張率を等しくするように作用し、前記膨張圧力によって前記カバーの膨張に対する抵抗に打ち勝って前記カバーが塑性変形することで前記終端部分および前記中央部分が前記中間直径を超えて膨張するようになっている、方法。 - 前記カテーテル集成体への前記内部人工器官の組み立ての前に、前記中間直径に前記バルーンおよび前記カバーを膨らませることによって前記カバーを予め伸ばすことをさらに含む、請求項15に記載の方法。
- 第1の終端および第2の終端を有しおよび少なくとも1つの柔軟なコネクターを介して相互に柔軟に接続された複数の環状のステント要素を含むバルーンで膨張可能な内部人工器官と、
その上に前記内部人工器官が集成されるカテーテル集成体と、
を含む、医療集成体であって、
環状のステント要素は前記第1の終端および前記第2の終端の近傍にあり、前記内部人工器官は未展開直径を有する未展開状態から展開直径を有する展開された状態へ展開可能であり、
前記カテーテル集成体は、
バルーンと、
前記バルーンに連結されたカバーと、
を含み、
前記内部人工器官は前記バルーンおよび前記カバーの周りに同軸上に位置し、
前記展開直径は少なくとも11ミリメーターであり、
前記カバーは展開の間の隣接した環状のステント要素の一様でない膨張を制限して隣接した環状のステント要素の一様でない膨張による縮小力が前記カバーと前記内部人工器官との間の摩擦力を超えることを防止するように構成されており、および、
隣接した環状のステント要素の前記制限された一様でない膨張により、前記内部人工器官は前記未展開直径から前記展開直径への膨張の間に縮小せず、
前記バルーンおよび前記カバーの中央部分が中間直径より小さいままである間に前記バルーンおよび前記カバーの終端部分は前記未展開直径と前記展開直径との間の中間直径に到達し、および膨張圧力が更に少なくとも1気圧増加した際に、前記バルーンおよび前記カバーの前記終端部分は前記カバーの膨張に対する抵抗に打ち勝つまでほぼ前記中間直径においてほぼ維持され、かつ前記バルーン及び前記カバーの前記中央部分は前記終端部分に隣接する側から膨らませられ、前記カバーは前記終端部分および前記中央部分における前記バルーンおよび前記カバーの膨張率を等しくするように作用し、前記膨張圧力によって前記カバーの膨張に対する抵抗に打ち勝って前記カバーが塑性変形することで前記終端部分および前記中央部分が前記中間直径を超えて膨張するようになっている、医療集成体。 - 隣接した環状のステント要素の前記制限された一様でない膨張は前記内部人工器官の縦軸に対して35°以下の角度となる、請求項17に記載の医療集成体。
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