JP2021534851A - 塞栓症を治療するためのシステムならびに関連する装置および方法 - Google Patents
塞栓症を治療するためのシステムならびに関連する装置および方法 Download PDFInfo
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Abstract
Description
図1は、本技術の一実施形態に従って構成された吸引組立体10(「組立体10」)を備える、凝塊治療または凝塊除去システムの部分概略側面図である。例示する実施形態では、組立体10は、カテーテルサブシステム100と、チュービングサブシステム120と、圧力源140と、を含む。カテーテルサブシステム100は、ルーメン104を画定し、かつ遠位部分103aおよび近位部分103bを有する細長いシャフトを備える、カテーテル102(例えば、吸引カテーテル)を含む。カテーテルサブシステム100は、カテーテル102の近位部分103bと一体となり、またはそれに結合することができる、弁106をさらに含む。
図1を参照して上で詳細に説明したように、本技術の組立体10は、真空を充填するように構成された圧力源(例えば、真空源、陰圧源、など)を含み、該真空は、カテーテルサブシステム100に印加して、凝塊物質を血管内から吸引するための吸入力を発生させることができる。一般に、圧力源は、陰圧を発生させるおよび/または貯蔵するための任意の好適な源または源の組み合わせとであり得る。いくつかの実施形態では、圧力源は、ポンプ(例えば、真空チャンバに結合された電気ポンプ)であり得、他の実施形態では、圧力源は、組立体10のユーザによって作動または別様に起動させて、その中に真空を発生させ、貯蔵することができる、1つ以上のシリンジを含むことができる。
図8は、本技術に従う、組立体10を含む凝塊除去システムを動作させて、ヒト患者の血管(例えば、肺血管)内から凝塊物質を除去するためのプロセスまたは方法800のフロー図である。本技術の実施形態に従う凝塊除去手技中の、図9A〜9Cは、組立体10の近位部分の側面図であり、図10Aおよび10Bは、組立体10の遠位部分の概略図である。具体的には、図9A〜9Cは、シリンジ340およびアダプタ350(図3A〜3D)を含む組立体10の側面図であり、図10Aおよび10Bは、カテーテル102の遠位部分103aが血管BV(例えば、肺血管)内の塞栓または凝塊物質PEに近接して配置された、カテーテル102の側面図である。例示のために、方法800のいくつかの特徴は、図1、図3A〜3D、および図9A〜図10Bに例示する実施形態の文脈で説明しているが、当業者は、本明細書で説明する他の好適なシステムおよび/または装置を使用して方法800を実行することができることを容易に理解するであろう。具体的には、シリンジ340の文脈で説明しているが、方法800は、図2〜図7を参照して上で詳細に説明した圧力源のうちの任意の1つまたは組み合わせを使用して実行することができる。
図11は、本技術に従って構成された別の凝塊処理または凝塊除去システムの部分概略側面図である。例示する実施形態では、凝塊除去システムは、第1の吸引組立体20と、第2の吸引組立体30と、を含む。第1の吸引組立体20および第2の吸引組立体30(「組立体20、30」)は、図1〜図10Bを参照して上で詳細に説明した吸引組立体10の特徴に略類似するいくつかの特徴を含むことができる。例えば、第1の吸引組立体20は、(i)第1のカテーテル1002および第1の弁1006を有する第1のカテーテルサブシステム1000と、(ii)第1の流体制御装置1026(例えば、ストップコック)を有する第1のチュービングサブシステム1020と、(iii)第1のチュービングサブシステム1020を介して第1のカテーテルサブシステム1000に流体結合させることができる、第1の圧力源1040と、を含む。同様に、第2の吸引組立体30は、(i)第2のカテーテル1102および第2の弁1106を有する第2のカテーテルサブシステム1100と、(ii)第2の流体制御装置1126(例えば、ストップコック)を有する第2のチュービングサブシステム1120と、(iii)第2のチュービングサブシステム1120を介して第2のカテーテルサブシステム1100に流体結合させることができる第2の圧力源1140と、を含む。
上述のことから、本技術の特定の実施形態を、例示を目的として本明細書で説明してきたが、本技術の範囲から逸脱することなく、様々な修正が行われ得ることが認識されるであろう。例えば、上で説明した実施形態の多くでは、介入装置を凝塊物質と係合させることを必要とすることなく、貯蔵された真空圧力を使用して、血管からカテーテルに凝塊物質を吸引または吸入することができる。しかしながら、当業者は、本明細書で開示する吸引装置および技術を、任意の好適な介入装置と併せて、および/または介入装置を利用した凝塊除去手技中に使用することができることを理解するであろう。いくつかの実施形態では、例えば、凝塊除去システムは、ガイドカテーテルの中へおよび/またはそれを通して介入装置を後退させている間、ガイドカテーテルに、貯蔵された真空圧力を印加して、吸入のバーストを発生させるように構成することができる。
本明細書で説明する凝塊除去のためのシステムおよび方法は、予め充填した真空を印加して、患者の血管から凝塊除去を吸引するための吸入を発生させることを含むことができる。本技術の一態様では、凝塊物質の吸引はまた、患者から血液も吸引する。患者への外傷を少なくするために−特に、除去手技が、相当な量の血液も一緒に引き出し得る複数の吸引パスを含み得る場合に−、吸引された血液を患者に再導入することが有利であり得る。しかしながら、吸引された血液は、しばしば、凝塊物質と混合され、したがって、患者への再導入には好適でない。図19〜図20Eは、相当な量の凝塊物質を再導入することなく、凝塊物質から除去された、吸引された血液を濾過して、吸引された血液を患者に再導入するための様々な装置を例示する。
本技術のいくつかの態様を以下の実施例に記載する:
結論
技術の実施形態の上記の詳細な説明は、網羅的であること、または技術を上記で開示された正確な形態に限定することを意図していない。技術の特定の実施形態および技術の例を例示の目的で上に説明したが、当業者が認識するように、技術の範囲内で様々な同等の変更が可能である。例えば、ステップは所与の順序で提示されているが、代替の実施形態は、異なる順序でステップを実行することができる。本明細書で説明される様々な実施形態はまた、さらなる実施形態を提供するために組み合わされてもよい。
Claims (34)
- ヒト患者の血管内からの凝塊物質を血管内治療するための方法であって、前記方法が、
カテーテルの遠位部分を前記血管内の前記凝塊物質に近接して配置することと、
流体制御装置を介して圧力源を前記カテーテルに結合させることであって、(a)前記流体制御装置を開くことで前記圧力源を前記カテーテルに流体接続し、(b)前記流体制御装置を閉じることで前記カテーテルから前記圧力源を流体接続解除する、結合させることと、
前記流体制御装置が閉じられている間、前記圧力源を作動させて、真空を発生させることと、
前記流体制御装置を開いて、前記真空を前記カテーテルに印加し、それによって、前記凝塊物質の少なくとも一部分を前記カテーテルの中へ吸引することと、を含む、方法。 - 前記カテーテルが、第1の直径を有するルーメンを画定し、前記圧力源が、先端部を有するシリンジを含み、前記先端部が、前記第1の直径よりも大きい第2の直径を有するボアを画定する、請求項1に記載の方法。
- 前記シリンジが、真空圧力ロックシリンジである、請求項2に記載の方法。
- 前記流体制御装置を開いて、前記真空を前記カテーテルに印加することが、約1秒未満にわたって、前記カテーテルの前記遠位部分において吸入を発生させることを含む、請求項1に記載の方法。
- 前記圧力源が、圧力容器と、一方向弁を介して前記圧力容器に流体連結されたシリンジを含み、
前記圧力源を前記カテーテルに結合させることが、前記圧力容器を前記カテーテルに結合させることを含み、
前記圧力源を作動させて、前記真空を発生させることが、前記シリンジを1回以上作動させて、前記圧力容器から排出することを含む、請求項1に記載の方法。 - 前記シリンジが、第2のシリンジであり、前記圧力容器が、第1のシリンジであり、前記圧力源を作動させることが、(i)前記第1のシリンジを作動させることと、(ii)前記第2のシリンジを作動させることと、を含む、請求項5に記載の方法。
- 前記圧力源を作動させることが、前記第1のシリンジを作動させる前に、前記第2のシリンジを作動させることを含む、請求項6に記載の方法。
- 前記圧力源が、第1のプランジャおよび第2のプランジャを有するシリンジを含み、前記圧力源を作動させることが、前記第1のプランジャを後退させることを含み、前記流体制御装置を開くことが、前記第2のプランジャを後退させることを含む、請求項1に記載の方法。
- 前記第1のプランジャのさらなる後退が前記第2のプランジャを同時に後退させるように、前記第1のプランジャを第1の距離だけ後退させた後に、前記第1のプランジャが、前記第2のプランジャに係合する、請求項8に記載の方法。
- 前記圧力源が、約60ccを超える容積を有するシリンジであり、前記圧力源を作動させることが、ハンドルを回転させて、前記シリンジのプランジャを後退させることを含む、請求項1に記載の方法。
- 前記流体制御装置を開いて、前記真空を印加することが、前記カテーテルの前記遠位部分においてほぼ瞬間的な吸入を提供することを含む、請求項1に記載の方法。
- 前記カテーテルの前記遠位部分を配置することが、前記遠位部分を前記凝塊物質の近位に配置することを含む、請求項1に記載の方法。
- 前記カテーテルの前記遠位部分を配置することが、前記遠位部分を少なくとも部分的に前記凝塊物質内に配置することを含む、請求項1に記載の方法。
- 前記方法が、前記圧力源と前記カテーテルとの間に流体結合されたフィルタを介して、血液から前記凝塊物質を濾過することをさらに含む、請求項1に記載の方法。
- 前記方法が、前記カテーテルを介して、前記濾過された血液を前記血管の中へ再導入することをさらに含む、請求項14に記載の方法。
- 前記血液から前記凝塊物質を濾過することが、前記圧力源内の前記血液から前記凝塊物質を濾過することを含む、請求項15に記載の方法。
- ヒト患者の血管内からの凝塊物質を血管内治療するための方法であって、前記方法が、
第1のカテーテルの遠位部分を前記血管内の前記凝塊物質に近接して治療部位に配置することと、
流体制御装置を介して圧力源を前記第1のカテーテルに結合させることであって、(a)前記流体制御装置を開くことで前記圧力源を前記第1のカテーテルに流体接続し、(b)前記流体制御装置を閉じることで前記第1のカテーテルから前記圧力源を流体接続解除する、結合させることと、
前記流体制御装置が閉じられている間、第1の圧力源を作動させて、真空を発生させることと、
前記流体制御装置を開いて、前記真空を前記第1のカテーテルに印加し、それによって、前記凝塊物質の少なくとも一部分を前記第1のカテーテルの中へ吸引することと、
前記第1のカテーテルを第2のカテーテルの遠位部分の中へ後退させることと、を含む、方法。 - 前記第2のカテーテルを通して前記患者から前記第1のカテーテルを引き出すことと、
前記第2のカテーテルを通して第3のカテーテルを前記治療部位に前進させることと、をさらに含む、請求項17に記載の方法。 - 前記圧力源が、第1の圧力源であり、前記方法が、
第2の圧力源を前記第2のカテーテルに結合させることと、
前記第2の圧力源を作動させて、前記第2のカテーテルの前記遠位部分において吸入を発生させることと、をさらに含む、請求項17に記載の方法。 - 前記圧力源が、第1の圧力源であり、前記流体制御装置が、第1の流体制御装置であり、前記方法が、第2の流体制御装置を介して第2の圧力源を前記第2のカテーテルに結合させることをさらに含み、(a)前記第2の流体制御装置を開くことで前記第2の圧力源を前記第2のカテーテルに流体接続し、(b)前記流体制御装置を閉じることで前記第2のカテーテルから前記第2の圧力源を流体接続解除する、請求項17に記載の方法。
- 前記第2の流体制御装置が閉じられている間、前記第2の圧力源を作動させて、真空を生じさせることと、
前記第2の流体制御装置を開いて、前記真空を前記第2のカテーテルに印加し、それによって、前記第2のカテーテルの前記遠位部分において吸入を発生させることと、をさらに含む、請求項20に記載の方法。 - 前記圧力源が、第1の圧力源であり、前記第1のカテーテルの前記遠位部分を前記治療部位に配置することが、前記第2のカテーテルのルーメンを通してかつシールを越えて前記第1のカテーテルを前進させることを含み、前記シールが、前記血管から前記第2のカテーテルの前記ルーメンを流体接続解除し、前記方法が、
第2の圧力源を前記第2のカテーテルに結合させることと、
前記第2の圧力源を作動させて、前記第2のカテーテルの前記ルーメン内に真空を発生させることと、
前記流体制御装置を開いた後に、前記第2のカテーテルの前記ルーメンを通してかつ前記シールを越えて前記第1のカテーテルを後退させ、それによって、前記凝塊物質の別の部分を前記第2のカテーテルの中へ吸引することと、をさらに含む、請求項17に記載の方法。 - 前記方法が、前記第2のカテーテルの前記遠位部分を前記血管内の前記治療部位に近接して配置することをさらに含む、請求項17に記載の方法。
- 前記第1のカテーテルの前記遠位部分を配置することが、前記第2のカテーテルを配置する前に、前記第1のカテーテルを前記血管を通して前進させることを含み、前記第2のカテーテルの前記遠位部分を配置することが、前記第1のカテーテルを越えて前記第2のカテーテルを前進させることを含む、請求項23に記載の方法。
- 前記第2のカテーテルの前記遠位部分を配置することが、前記第1のカテーテルを配置する前に、前記第2のカテーテルを前記血管を通して前進させることを含み、前記第1のカテーテルを配置することが、前記第2のカテーテルのルーメンを通して前記第1のカテーテルを前進させることを含む、請求項23に記載の方法。
- ヒト患者の血管内からの凝塊物質を血管内治療するためのシステムであって、前記システムが、
前記血管内の前記凝塊物質に近接する治療部位において血管内配置されるように構成されたカテーテルと、
前記カテーテルに結合され、流体制御装置を含む、チュービング組立体と、
陰圧を発生させるための圧力源と、を備え、
前記圧力源が、前記チュービング組立体に結合されるように構成された先端部を含み、
前記先端部が、前記カテーテルの直径以上の直径を有するボアを画定し、
前記流体制御装置が、(a)前記圧力源が前記チュービング組立体を介して前記カテーテルに流体接続される第1の位置と、(b)前記圧力源が前記カテーテルから流体接続解除される第2の位置との間で移動可能である、システム。 - 前記圧力源が、シリンジであり、前記ボアの前記直径が、20フレンチを超える、請求項26に記載のシステム。
- 前記圧力源が、
前記先端部を有する圧力容器と、
プランジャを有するシリンジと、
前記圧力容器を前記シリンジに結合させる第1の一方向弁と、
前記シリンジに結合された第2の一方向弁と、を含み、
前記プランジャの第1の方向への移動が、前記一方向弁を通して流体を前記圧力容器から前記シリンジに引き込み、
前記プランジャの第2の方向への移動が、前記第2の一方向弁を通して前記シリンジから流体を押し出す、請求項26に記載のシステム。 - 前記プランジャの前記第2の方向への移動中に、前記第1の一方向弁が閉じられる、請求項28に記載のシステム。
- 前記プランジャの前記第1の方向への移動中に、前記第2の一方向弁が閉じられる、請求項28に記載のシステム。
- 前記圧力容器が、シリンジである、請求項28に記載のシステム。
- ヒト患者の血管内の凝塊物質に近接して吸引カテーテルを血管内配置するための方法であって、前記方法が、
前記血管を通して前記吸引カテーテルを前記凝塊物質に向かって前進させることと、
前記吸引カテーテルに流体接続された弁を開くことと、
実質的に前記弁を通る血液の流れが存在しないと判定することによって、前記吸引カテーテルの遠位部分が、前記凝塊物質と係合していると判定することと、
前記吸引カテーテルを近位に後退させることと、
前記弁を通る血液の流れが存在すると判定することによって、前記吸引カテーテルの前記遠位部分が、前記凝塊物質の近位に配置されていると判定することと、
前記弁を閉じることと、を含む、方法。 - 前記方法が、前記吸引カテーテルを近位に後退させる前に、前記弁を閉じることをさらに含む、請求項32に記載の方法。
- 前記弁を開くことが、前記弁のボタンを押下することを含む、請求項32に記載の方法。
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