JP7355933B2 - リソプラスティ機器用の非対称的なバルーン - Google Patents
リソプラスティ機器用の非対称的なバルーン Download PDFInfo
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Description
本出願は、2019年10月31日出願の米国仮特許出願第62/928,628号(表題「ASYMMETRICAL BALLOON FOR LITHOPLASTY DEVICE AND METHOD」);及び2020年10月5日出願の米国特許出願公開第17/063,311号(表題「ASYMMETRICAL BALLOON FOR LITHOPLASTY DEVICE AND METHOD」)の優先権を主張する。認められる限り、米国仮特許出願第62/928,628号及び米国特許出願公開第17/063,311号の内容全体を参照することにより本書に援用する。
体内の血管内の血管系病変部(Vascular lesions)は、主要有害事象、例えば心筋梗塞、塞栓症、深部静脈血栓症、脳卒中などのリスクの増加に関連付けられ得る。重症の血管系病変部、例えば重症の石灰化血管系病変部は、臨床の場において、医師が治療して開存性を達成することが困難とし得る。
本発明は、血管壁を有する血管内に配置するためのカテーテルシステムに関する。カテーテルシステムは、患者の体内の血管壁内の又はそれに隣接する治療部位を治療するために使用され得る。様々な実施形態において、カテーテルシステムは、エネルギー源、バルーン、及びエネルギーガイドを含む。エネルギー源はエネルギーを発生させる。バルーンは、バルーン内部を画成するバルーン壁を含む。バルーンは、バルーン内部にバルーン流体を保持するように構成されている。バルーンは、膨張状態まで拡張するように、バルーン流体によって選択的に膨張可能であり、バルーンが膨張状態にあるときに、バルーン壁が、治療部位に実質的に隣接させて位置決めされるように構成されている。バルーンは、さらに、バルーンが膨張状態にあるときに、バルーンの幾何学的中心を通って延在するバルーン中心軸を含む。エネルギーガイドは、エネルギー源からエネルギーを選択的に受け取り、且つエネルギーをエネルギー源からバルーン内部へと案内する。エネルギーガイドは、バルーンが膨張状態にあるときに、バルーン中心軸に位置決めされるガイド遠位端を含む。
本発明の新規の特徴、並びに本発明自体の双方共、その構造及びその動作に関して、添付の説明と併せて、添付図面から最もよく理解され、図面では、同様の参照符号は同様の部分を指している。
血管系病変部の治療は、病気に侵された対象者の主要有害事象又は死亡を減少させ得る。本明細書で言及するように、主要有害事象は、血管系病変部が存在するせいで、体内のどこにでも発生し得るものである。主要有害事象は、限定されるものではないが、主要な心臓有害事象、末梢若しくは中心血管系内での主要有害事象、脳内での主要有害事象、筋肉組織内での主要有害事象、又は内部器官のいずれか内での主要有害事象を含み得る。
Claims (20)
- 患者の体内で血管壁内の又はそれに隣接する治療部位を治療するためのカテーテルシステムであって:
エネルギーを発生させるエネルギー源と;
バルーン内部を画成するバルーン壁を含むバルーンであって、前記バルーンは、前記バルーン内部にバルーン流体を保持するように構成されており、前記バルーンは、前記バルーン流体によって、前記バルーン壁が前記治療部位に実質的に隣接させて位置決め可能である膨張状態へ拡張するように選択的に膨張可能であり、前記バルーンは、前記バルーンが前記膨張状態にあるときに、前記バルーンの幾何学的中心を通って延在するバルーン中心軸を有する、バルーンと;
前記エネルギー源からエネルギーを選択的に受け取る複数のエネルギーガイドであって、前記複数のエネルギーガイドのそれぞれは、前記エネルギーを前記エネルギー源から前記バルーン内部へとガイドし、前記複数のエネルギーガイドのそれぞれは、ガイド遠位端を含む、複数のエネルギーガイドと;
を含み、
前記複数のエネルギーガイドの第1のエネルギーガイドの前記ガイド遠位端の少なくとも一部分は、前記バルーンが前記膨張状態にあるときに、前記バルーン中心軸に位置決めされ、
前記複数のエネルギーガイドのそれぞれは、前記エネルギー源から前記エネルギーを受け取り、且つ前記エネルギーを前記エネルギー源から前記バルーン内部へとガイドして、前記バルーン内部にある前記バルーン流体中にプラズマを発生させ、前記プラズマ発生は、急速な気泡形成を引き起こして、前記治療部位に隣接する前記バルーン壁に圧力波を与える、カテーテルシステム。 - 患者の体内で血管壁内の又はそれに隣接する治療部位を治療するためのカテーテルシステムであって:
エネルギーを発生させるエネルギー源と;
バルーン内部を画成するバルーン壁を含む非対称的なバルーンであって、前記バルーンは、前記バルーン内部にバルーン流体を保持するように構成されており、前記バルーンは、前記バルーン流体によって、前記バルーン壁が前記治療部位に実質的に隣接させて位置決め可能である膨張状態へ拡張するように選択的に膨張可能であり、前記バルーンは、さらに、(i)バルーン近位端部、(ii)対向するバルーン遠位端部、(iii)前記バルーンが前記膨張状態にあるときに、前記バルーン近位端部及び前記バルーン遠位端部を通って延在するバルーン端軸、並びに(iv)前記バルーンが前記膨張状態にあるときに、前記バルーンの幾何学的中心を通って延在するバルーン中心軸を含み、前記バルーン中心軸は、前記バルーン端軸から離間して実質的に平行になっており、前記バルーンはバルーン半径を有し、前記バルーン中心軸は、前記バルーン半径の少なくともおよそ5パーセントの軸離間距離だけ、前記バルーン端軸から離間されている、非対称的なバルーンと;
前記エネルギー源からエネルギーを選択的に受け取るエネルギーガイドであって、前記エネルギーガイドは、前記エネルギーを前記エネルギー源から前記バルーン内部へとガイドし、前記エネルギーガイドは、ガイド遠位端を含む、エネルギーガイドと;
を含み、
前記ガイド遠位端の部分が、前記バルーンが前記膨張状態にあるときに、前記バルーン中心軸に位置決めされず、
前記エネルギーガイドは、前記エネルギー源から前記エネルギーを受け取り、且つ前記エネルギーを前記エネルギー源から前記バルーン内部へとガイドして、前記バルーン内部にある前記バルーン流体中にプラズマを発生させ、前記プラズマ発生は、急速な気泡形成を引き起こして、前記治療部位に隣接する前記バルーン壁に圧力波を与える、カテーテルシステム。 - さらに、前記バルーン近位端部と前記バルーン遠位端部との間に延在するガイドワイヤルーメンを含み、前記ガイドワイヤルーメンは、前記バルーン中心軸からオフセットされて位置決めされている、請求項2に記載のカテーテルシステム。
- 前記ガイドワイヤルーメンは、前記バルーン端軸に実質的に沿って位置決めされている、請求項3に記載のカテーテルシステム。
- さらにカテーテルシャフトを含み、前記バルーンは前記カテーテルシャフトに結合されている、請求項3又は4に記載のカテーテルシステム。
- 前記カテーテルシャフトは長手方向軸を含み、及び前記長手方向軸は前記バルーン端軸と実質的に同軸である、請求項5に記載のカテーテルシステム。
- 前記エネルギー源は、レーザエネルギーのパルスをもたらすレーザ源である、請求項3~6のいずれか1項に記載のカテーテルシステム。
- 前記エネルギーガイドは光ファイバーを含む、請求項3~7のいずれか1項に記載のカテーテルシステム。
- 患者の体内で血管壁内の又はそれに隣接する治療部位を治療するためのカテーテルシステムであって:
エネルギーを発生させるエネルギー源と;
バルーン内部を画成するバルーン壁を含む非対称的なバルーンであって、前記バルーンは、前記バルーン内部にバルーン流体を保持するように構成されており、前記バルーンは、膨張状態まで拡張するように前記バルーン流体によって選択的に膨張可能であり、ここで、前記バルーン壁は、前記治療部位に実質的に隣接するように位置決めされるように構成されており、前記バルーンは、さらに、(i)バルーン近位端部、(ii)対向するバルーン遠位端部、(iii)前記バルーンが前記膨張状態にあるときに、前記バルーン近位端部及び前記バルーン遠位端部を通って延在するバルーン端軸、並びに(iv)前記バルーンが前記膨張状態にあるときに、前記バルーンの幾何学的中心を通って延在するバルーン中心軸を含み、前記バルーン中心軸は、前記バルーン端軸から離間して実質的に平行になっている、非対称的なバルーンと;
前記バルーン近位端部と前記バルーン遠位端部との間に延在するガイドワイヤルーメンであって、前記バルーン端軸に実質的に沿って位置決めされており、且つ前記バルーン中心軸からオフセットされて位置決めされている、ガイドワイヤルーメンと;
前記バルーン端軸と実質的に同軸である長手方向軸を含むカテーテルシャフトであって、前記バルーンは前記カテーテルシャフトに結合されている、カテーテルシャフトと;
前記エネルギー源からエネルギーを選択的に受け取り、且つ前記エネルギーを前記バルーン内部へとガイドして、前記バルーン内部にある前記バルーン流体中にプラズマを発生させる、第1のエネルギーガイドであって、前記プラズマ発生は、急速な気泡形成を引き起こして、前記治療部位に隣接する前記バルーン壁に圧力波を与え、前記第1のエネルギーガイドは、第1のガイド遠位端を含む、第1のエネルギーガイドと;
前記エネルギー源からエネルギーを選択的に受け取り、且つ前記エネルギーを前記バルーン内部へとガイドして、前記バルーン内部にある前記バルーン流体中にプラズマを発生させる、第2のエネルギーガイドであって、前記プラズマ発生は、急速な気泡形成を引き起こして、前記治療部位に隣接する前記バルーン壁に圧力波を与え、前記第2のエネルギーガイドは、第2のガイド遠位端を含む、第2のエネルギーガイドと;
を含み、
前記第1のエネルギーガイドの前記第1のガイド遠位端の少なくとも一部分は、前記バルーンが前記膨張状態にあるときに、前記バルーン中心軸に位置決めされ、
前記第2のエネルギーガイドの前記第2のガイド遠位端の部分は、前記バルーンが前記膨張状態にあるときに、前記バルーン中心軸に位置決めされない、カテーテルシステム。 - 前記複数のエネルギーガイドのそれぞれは、前記バルーン内部内へ延在する、離間した電極を含む電極対を含み;及び前記エネルギー源からの高電圧のパルスが、前記電極に加えられて、前記電極間に電気アークを形成する、請求項1に記載のカテーテルシステム。
- 前記バルーンは、さらに、バルーン近位端部と、対向するバルーン遠位端部と、前記バルーンが前記膨張状態にあるときに、前記バルーン近位端部及び前記バルーン遠位端部を通って延在するバルーン端軸とを含む、請求項1に記載のカテーテルシステム。
- 前記バルーンは、前記膨張状態において非対称的である、請求項1に記載のカテーテルシステム。
- 前記第1のエネルギーガイド及び前記第2のエネルギーガイドのそれぞれは、光ファイバーを含み、前記エネルギー源は、レーザエネルギーのパルスをもたらすレーザ源である、請求項9に記載のカテーテルシステム。
- 前記第1のエネルギーガイド及び前記第2のエネルギーガイドのそれぞれは、前記バルーン内部内へ延在する、離間した電極を含む電極対を含み;及び前記エネルギー源からの高電圧のパルスが、前記電極に加えられて、前記電極間に電気アークを形成する、請求項9に記載のカテーテルシステム。
- 前記複数のエネルギーガイドの第2のエネルギーガイドの前記ガイド遠位端の部分は、前記バルーンが前記膨張状態にあるときに、前記バルーン中心軸に位置決めされない、請求項1に記載のカテーテルシステム。
- 前記複数のエネルギーガイドのそれぞれは、光ファイバーを含み、前記エネルギー源は、レーザエネルギーのパルスをもたらすレーザ源である、請求項1に記載のカテーテルシステム。
- さらに、少なくとも前記バルーン近位端部と前記バルーン遠位端部との間に延在するガイドワイヤルーメンを含み、前記ガイドワイヤルーメンは、前記バルーン中心軸からオフセットされて位置決めされ、前記バルーン端軸に実質的に沿って位置決めされている、請求項11に記載のカテーテルシステム。
- さらに、長手方向軸を含むカテーテルシャフトを含み、前記バルーンは前記カテーテルシャフトに結合され、前記長手方向軸は前記バルーン端軸と実質的に同軸である、請求項11に記載のカテーテルシステム。
- 前記エネルギー源からエネルギーを選択的に受け取り、且つ前記エネルギーを前記バルーン内部へとガイドして、前記バルーン内部にある前記バルーン流体中にプラズマを発生させる、第2のエネルギーガイドであって、前記プラズマ発生は、急速な気泡形成を引き起こして、前記治療部位に隣接する前記バルーン壁に圧力波を与え、前記第2のエネルギーガイドは、第2のガイド遠位端を含む、第2のエネルギーガイドをさらに含み、前記第2のエネルギーガイドの前記第2のガイド遠位端の少なくとも一部分は、前記バルーンが前記膨張状態にあるときに、前記バルーン中心軸に位置決めされる、請求項2に記載のカテーテルシステム。
- 前記エネルギーガイドは、前記バルーン内部内へ延在する、離間した電極を含む電極対を含み;及び前記エネルギー源からの高電圧のパルスが、前記電極に加えられて、前記電極間に電気アークを形成する、請求項2に記載のカテーテルシステム。
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