JP2022535600A - 眼科用切断ツールのためのマルチステージトリガ - Google Patents
眼科用切断ツールのためのマルチステージトリガ Download PDFInfo
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Abstract
Description
本出願は、2019年6月7日に出願された同時係属の米国仮特許出願シリアル番号62/858,785号に対する米国特許法119条(e)の利益を主張するものである。仮出願の開示内容は、参照によりその全体が本明細書に組み込まれる。
Claims (56)
- 眼の水晶体嚢の内部から水晶体組織を除去するための医療装置であって、
手で持てる大きさのハウジングと、
前記ハウジングから遠位方向に延びて、前記ハウジングに対して振動するよう構成されたシャフトであって、前記眼の前記水晶体嚢の内部の水晶体にアクセスするよう適合された遠位端領域を含み、内腔を有するシャフトと、
前記ハウジング内に配置された真空発生源に動作可能に結合されたカムアセンブリであって、前記真空発生源に動作可能に結合され、前記真空発生源に前記内腔を通して真空を発生させるよう、軸を中心に回転可能な第1部分と、前記第1部分と前記シャフトとに動作可能に結合され、前記シャフトを振動させるよう、前記第1部分とともに前記軸を中心に回転可能な第2部分と、を含むカムアセンブリと、
前記カムアセンブリの回転を作動するよう構成されたハウジング上のトリガと、
を備え、
前記トリガの作動の第1段階により、前記真空発生源に前記シャフトの内腔内に真空を発生させ、前記トリガの作動の第2段階により、前記第2部分の回転に伴い前記シャフトを振動させる、
装置。 - 前記トリガは、ハウジングに対する総移動経路を有する、
請求項1に記載の装置。 - 0より大きく前記総移動経路の下側閾値パーセントよりも小さい前記総移動経路のパーセンテージとしてのトリガの第1量の動きにより、灌流流入ラインにおいて弁が開いて、灌流源から前記シャフトの前記内腔に向かって灌流流体の流れを開始する、
請求項2に記載の装置。 - 前記総移動経路の下側閾値パーセントよりも大きく前記総移動経路の上側閾値パーセントよりも小さい前記総移動経路のパーセンテージとしてのトリガの第1量の動きにより、前記カムアセンブリの第1部分が回転し、連続する前記シャフトの前記内腔を通して真空を発生させる、
請求項2に記載の装置。 - 前記総移動経路の上側閾値パーセント以上の前記総移動経路のパーセンテージとしてのトリガの第2量の動きは、脈動真空と前記シャフトの振動とを開始する、
請求項4に記載の装置。 - 前記第1量は、前記医療装置を初期灌流のみのフェーズにする、
請求項3に記載の装置。 - 前記第1量は、前記医療装置を灌流プラス低流量連続吸引フェーズにする、
請求項4に記載の装置。 - 前記第2量は、前記医療装置を灌流プラスパルス吸引プラス切断フェーズにする、
請求項7に記載の装置。 - 前記灌流プラス低流量連続吸引フェーズにおける前記真空発生源の流量は、約2mL/分から20mL/分の間である、
請求項7に記載の装置。 - 前記灌流プラスパルス吸引プラス切断フェーズにおける前記真空発生源の流量は、20mL/分から50mL/分である、
請求項8に記載の装置。 - 前記下側閾値パーセントは、約5%であり、前記上側閾値パーセントは、約50%である、
請求項5に記載の装置。 - 前記シャフトの機械的振動の周波数は、前記トリガが前記上側閾値パーセントを超えて移動するにつれて大きくなる、
請求項5に記載の装置。 - 前記真空発生源は、複数のピストンを備え、前記複数のピストンのそれぞれは、それぞれのシリンダ内に収容され、前記シリンダのそれぞれは、前記シャフトの前記内腔に流体結合され、
前記トリガは、ラッチとピストンストップとに動作可能に結合され、
前記ラッチは、前記第2部分の回転に伴い前記シャフトが振動することを防止するよう構成され、前記ピストンストップは、前記それぞれのシリンダ内での前記複数のピストンの近位移動を制限するよう構成され、前記トリガの作動の前記第2段階は、前記ラッチを解放すると同時に、前記複数のピストンから離れるよう前記ピストンストップを回転させて、シャフト振動および脈動真空を開始する、
請求項1から12のいずれか1項に記載の装置。 - 前記トリガは、前記第2部分の回転前記シャフトの回転に伴い前記シャフトが振動することを防止するよう構成されたラッチと動作可能に結合され、前記トリガの作動の前記第2段階は、前記ラッチを解放して、前記第2部分の回転に伴い前記シャフトが振動できるようにする、
請求項1から12のいずれか1項に記載の装置。 - 前記シャフトの近位端は、遠位面と、近位面と、上面と、を有する切断ホルダに結合され、前記上面は、前記ラッチを受け入れる大きさのノッチを画定する、
請求項14に記載の装置。 - さらに、前記切断ホルダの前記近位面に対して隣接するよう構成された切断スプラインを備え、前記切断スプラインは、前記カムアセンブリの前記第2部分に結合される、
請求項15に記載の装置。 - 前記トリガは静止位置を有し、前記トリガが前記静止位置にある場合に、前記ラッチは、前記ノッチ内に係合される、
請求項16に記載の装置。 - 前記トリガの作動の前記第1段階は、前記静止位置から吸引専用位置に前記トリガを移動させる、
請求項17に記載の装置。 - 前記トリガが前記吸引専用位置にある場合に、前記ラッチは前記ノッチ内に係合されたままである、
請求項18に記載の装置。 - 前記トリガの作動の前記第2段階は、前記吸引専用位置から吸引振動位置に前記トリガを移動させる、
請求項19に記載の装置。 - 前記トリガが前記吸引振動位置にある場合に、前記ラッチは前記ノッチから取り外される、
請求項20に記載の装置。 - 前記ラッチが前記切断ホルダの前記ノッチ内に係合されている場合に、前記切断ホルダと前記シャフトとは、前記第2部分の回転中に静止したままである、
請求項17に記載の装置。 - 前記ラッチが前記切断ホルダの前記ノッチから引き出されると、前記切断スプラインと、前記切断ホルダと、前記シャフトとは、前記第2部分の回転中にともに振動するよう構成される、
請求項22に記載の装置。 - 前記トリガの作動の前記第1段階は、前記ハウジングの長手方向軸に沿ってボタンロッドを近位にスライドさせる、
請求項16に記載の装置。 - 前記ボタンロッドは、前記ラッチに係合するよう構成された斜面を備え、前記ラッチを前記斜面に沿ってスライドさせて、前記ノッチとの係合から持ち上げて前記切断ホルダを解放する、
請求項24に記載の装置。 - 前記切断ホルダと前記シャフトとは、前記切断スプラインにより遠位方向に促され、前記切断ホルダと前記シャフトとは、前記切断ホルダスプリングにより近位方向に促される、
請求項25に記載の装置。 - 前記カムアセンブリの前記第2部分の回転は、近位方向にカムフォロワを促して、カムフォロワスプリングを圧縮する、
請求項26に記載の装置。 - 前記シャフトは、前記カムフォロワとともに近位方向に後退する、
請求項27に記載の装置。 - 前記カムフォロワは、前記回転のある点で遠位に落下し、前記カムフォロワスプリングは、遠位方向に前記シャフトを促す、
請求項28に記載の装置。 - 前記切断スプラインは前記カムフォロワとともに移動する、
請求項29に記載の装置。 - 前記ラッチが前記ノッチから引き出されるときに、前記切断ホルダは、前記切断スプラインとともに移動する、
請求項30に記載の装置。 - 前記ラッチが前記ノッチ内に係合している場合に、前記切断スプラインが動くと、切断ホルダは静止したままである、
請求項31に記載の装置。 - 前記シャフトは、長手方向軸に沿って往復運動することにより振動する、
請求項1から12のいずれか1項に記載の装置。 - 前記シャフトは、第1最大速度で遠位方向に往復振動し、第2最大速度で近位方向に往復運動し、前記第1最大速度は前記第2最大速度よりも大きい、
請求項33に記載の装置。 - 前記長手方向軸は、前記カムアセンブリが周りを回転する軸と一致する、
請求項33に記載の装置。 - 前記カムアセンブリの前記第1部分は、第1面を備え、前記真空発生源は、ピストンと、シリンダと、を備え、前記第1面の回転により、前記シリンダ内で前記ピストンに往復運動させて真空を発生させる、
請求項1から12のいずれか1項に記載の装置。 - 前記真空発生源は、複数の真空発生源を備え、前記カムアセンブリの前記第1部分の回転により、前記複数の真空発生源のそれぞれに真空を発生させる、
請求項1から12のいずれか1項に記載の装置。 - 前記カムアセンブリは、前記カムアセンブリを含む前記ハウジングの内部に配置されたモータにより、動作可能に回転される、
請求項1から12のいずれか1項に記載の装置。 - 前記モータの速度は、前記ハウジング上の前記トリガにより可変的に制御される、
請求項38に記載の装置。 - 前記真空発生源は、複数のピストン、を備え、前記複数のピストンのそれぞれは、それぞれのシリンダ内に収容され、前記シリンダのそれぞれは、前記シャフトの前記内腔に流体結合される、
請求項1から12のいずれか1項に記載の装置。 - 前記カムアセンブリの前記第1部分は、回転可能カプラを介してモータにより回転可能である、
請求項40に記載の装置。 - 前記カムアセンブリの前記第1部分の回転により、前記複数のピストンは前記内腔内で不連続な脈動吸引を発生させる、
請求項41に記載の装置。 - 前記医療装置はさらに、前記トリガに移動可能に結合されたピストンストップを備え、前記ピストンストップは、前記それぞれのシリンダ内で前記複数のピストンの近位移動を制限するよう構成される、
請求項41に記載の装置。 - 前記ピストンストップは、前記カムアセンブリの前記第1部分の回転中に、前記真空発生源を低流量連続吸引モードに維持する、
請求項43に記載の装置。 - 前記ピストンストップは、前記それぞれのシリンダ内でそれぞれのピストンの近位移動を最大近位移動よりも小さく制限して、前記低流量連続吸引モードを維持する、
請求項44に記載の装置。 - 前記トリガの作動の前記第2段階は、前記複数のピストンに対して前記ピストンストップを移動させて、真空発生源を不連続な脈動吸引モードに切り替える、
請求項45に記載の装置。 - 前記不連続な脈動吸引モードにより、前記それぞれのシリンダ内のそれぞれのピストンの最大近位移動が可能になる、
請求項46に記載の装置。 - 前記ピストンストップは、作動の第2段階において、前記ハウジングの長手方向軸を中心に回転する、
請求項47に記載の装置。 - 前記連続吸引の流量は、前記不連続な脈動吸引の流量よりも小さい、
請求項47に記載の装置。 - 前記連続吸引の前記流量は、約2mL/分から約20mL/分の間である、
請求項49に記載の装置。 - 前記不連続な脈動吸引の流量は、約20ml/分から約50ml/分までである、
請求項49に記載の装置。 - 前記医療装置は、灌流流体の供給源を有する流体システムに流体結合するよう構成され、前記医療装置は、灌流ラインを介して流体結合される、
請求項1から12のいずれか1項に記載の装置。 - 前記灌流ラインは、前記灌流ラインを通る灌流流体の流れを制御するよう構成された弁を備える、
請求項52に記載の装置。 - 前記トリガの作動の前記第1段階は、さらに、前記流体システムの前記灌流ラインの前記弁を開き、前記医療装置を、灌流プラス低流量連続吸引フェーズにする、
請求項53に記載の装置。 - 前記トリガの作動の第2段階は、前記医療装置を、灌流プラスパルス吸引プラス切断フェーズにする、
請求項54に記載の装置。 - 前記第2段階を超える前記トリガの作動は、振動周波数および吸引流量のうち少なくともいずれか一方を増加させる、
請求項55に記載の装置。
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