JP2021084033A - 外側シース及び内側カテーテルを有する血塊回収装置 - Google Patents
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Abstract
Description
本出願は、参照により全体が本明細書に組み込まれる、2019年11月27日に出願された米国特許仮出願第62/941,366号の利益を主張するものである。
本発明は、全般的には、血管内医療処置中に血管から遮断物を除去するための装置及び方法に関する。より具体的には、本発明は、外側シースと内側漏斗カテーテルを備える血塊回収装置に関する。
(1) 血管内の閉塞物を回収するための装置であって、
遠位端と、近位端と、前記近位端を包含する近位ルアーと、前記遠位端の近位に延び、かつ前記近位ルアー内で終端する内部ルーメンと、を備える、外側シースと、
拡張遠位先端と、近位端と、前記遠位先端に位置する遠位端と、前記近位端を包含する近位ルアーと、前記遠位端の近位に延び、かつ前記ルアーで終端する内部ルーメンと、を備える、前記外側シース内にある内側漏斗カテーテルと、を備え、
前記拡張遠位先端は、前記外側シースの前記遠位端の遠位にて拘束解除されると、径方向に自己拡張するように構成されている、装置。
(2) 前記外側シースの固定位置に対してテレスコピックに前記内側漏斗カテーテルを移動させるためのスライダ機構を更に備える、実施態様1に記載の装置。
(3) 前記スライダ機構は、前記内側漏斗カテーテルの前記近位ルアーに位置付けられている、実施態様2に記載の装置。
(4) 前記内側漏斗カテーテルの固定位置に対してテレスコピックに前記外側シースを移動させるように構成された回転ノブを更に備える、実施態様1に記載の装置。
(5) 前記内側漏斗カテーテルの固定位置に対してテレスコピックに前記外側シースを移動させるためのスライダ機構を更に備える、実施態様1に記載の装置。
(7) 前記内側漏斗カテーテルの前記近位ルアーと前記外側シースの前記近位ルアーとの間に位置するロックタブを更に備える、実施態様1に記載の装置。
(8) 前記内側漏斗カテーテルの前記近位ルアーと前記外側シースの前記近位ルアーとの間にスナップ嵌め接続部を更に備える、実施態様1に記載の装置。
(9) 前記遠位先端は、少なくとも部分的に膜で包み込まれている、実施態様1に記載の装置。
(10) 前記外側シースの前記遠位端に取り付けられた膜が、前記遠位先端の前記径方向の自己拡張によって径方向に拡張される、実施態様1に記載の装置。
(12) 前記遠位先端は、前記血管内の前記閉塞物へ向かって前進させられる際、前記外側シース内において、しぼんだ送達位置にある、実施態様1に記載の装置。
(13) 前記遠位先端の前記しぼんだ送達位置は、前記外側シースの前記遠位端の近位側に約20〜50mmの距離である、実施態様12に記載の装置。
(14) 患者の血管から閉塞性血栓を回収する方法であって、
遠位端と、近位端と、前記近位端を含む近位ルアーと、を含む外側シースを、脈管構造内に前進させることと、
内側漏斗カテーテルを、前記内側漏斗カテーテルの拡張可能な遠位先端が、前記外側シースの前記遠位端よりも遠位に延びて、前記閉塞性血栓付近の標的部位において展開するまで、前記外側シースを通して前進させることであって、前記内側漏斗カテーテルは、前記外側シースと接続され、前記外側シース内でテレスコピックに移動可能であり、かつ近位端と、遠位端と、前記近位端を含む近位ルアーと、を含む、ことと、
前記内側漏斗カテーテルの口内に前記血栓を捕捉することと、
前記脈管構造を通して、捕捉した前記血栓とともに前記内側漏斗カテーテルを前記患者の体外に回収することと、を含む、方法。
(15) 前記内側漏斗カテーテルが回収されている間に、前記標的部位における前記外側シースの位置を維持することを更に含む、実施態様14に記載の方法。
(17) 機構によって、前記内側漏斗カテーテル及び前記外側シースを互いに対してテレスコピックに移動させることを更に含み、
前記機構は、スライド機構又は回転ノブのうちのいずれかである、実施態様14に記載の方法。
(18) 前記外側シースの前記近位ルアーと前記内側漏斗カテーテルの前記近位ルアーとの間に形成された複数のチャネルによって、前記外側シース及び前記内側漏斗カテーテルの両方を、同時に洗い流すことを更に含む、実施態様14に記載の方法。
(19) 遠位前進のために、ロック機構によって、前記内側漏斗カテーテルと前記外側シースとを一緒に保持することを更に含む、実施態様14に記載の方法。
(20) 前記ロック機構は、ロックタブ、スナップ嵌め機構、又はルアーロックねじのうちのいずれかである、実施態様19に記載の方法。
Claims (13)
- 血管内の閉塞物を回収するための装置であって、
遠位端と、近位端と、前記近位端を包含する近位ルアーと、前記遠位端の近位に延び、かつ前記近位ルアー内で終端する内部ルーメンと、を備える、外側シースと、
拡張遠位先端と、近位端と、前記遠位先端に位置する遠位端と、前記近位端を包含する近位ルアーと、前記遠位端の近位に延び、かつ前記ルアーで終端する内部ルーメンと、を備える、前記外側シース内にある内側漏斗カテーテルと、を備え、
前記拡張遠位先端は、前記外側シースの前記遠位端の遠位にて拘束解除されると、径方向に自己拡張するように構成されている、装置。 - 前記外側シースの固定位置に対してテレスコピックに前記内側漏斗カテーテルを移動させるためのスライダ機構を更に備える、請求項1に記載の装置。
- 前記スライダ機構は、前記内側漏斗カテーテルの前記近位ルアーに位置付けられている、請求項2に記載の装置。
- 前記内側漏斗カテーテルの固定位置に対してテレスコピックに前記外側シースを移動させるように構成された回転ノブを更に備える、請求項1に記載の装置。
- 前記内側漏斗カテーテルの固定位置に対してテレスコピックに前記外側シースを移動させるためのスライダ機構を更に備える、請求項1に記載の装置。
- 前記スライダ機構は、前記外側シースの前記近位ルアーに位置付けられている、請求項5に記載の装置。
- 前記内側漏斗カテーテルの前記近位ルアーと前記外側シースの前記近位ルアーとの間に位置するロックタブを更に備える、請求項1に記載の装置。
- 前記内側漏斗カテーテルの前記近位ルアーと前記外側シースの前記近位ルアーとの間にスナップ嵌め接続部を更に備える、請求項1に記載の装置。
- 前記遠位先端は、少なくとも部分的に膜で包み込まれている、請求項1に記載の装置。
- 前記外側シースの前記遠位端に取り付けられた膜が、前記遠位先端の前記径方向の自己拡張によって径方向に拡張される、請求項1に記載の装置。
- 前記内側漏斗カテーテルの内径及び前記外側シースの外径に取り付けられた膜が、前記遠位先端の前記径方向の自己拡張によって径方向に拡張される、請求項1に記載の装置。
- 前記遠位先端は、前記血管内の前記閉塞物へ向かって前進させられる際、前記外側シース内において、しぼんだ送達位置にある、請求項1に記載の装置。
- 前記遠位先端の前記しぼんだ送達位置は、前記外側シースの前記遠位端の近位側に約20〜50mmの距離である、請求項12に記載の装置。
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