JP5616353B2 - 注入システムの流体加圧ユニット用の装置及び方法 - Google Patents
注入システムの流体加圧ユニット用の装置及び方法 Download PDFInfo
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Description
Claims (20)
- 流体注入システムの流体加圧ユニットであって、プランジャシャフトとシリンジとプランジャとを備える流体加圧ユニットを無効化する方法において、
前記シリンジを前記流体加圧ユニットの全ての下流流路から隔離するステップと、
前記プランジャシャフトを前記シリンジ内の第1の位置から前記シリンジ内の第2の位置に後退させるステップであって、それにより前記シリンジ内で前記プランジャの下流に真空が生じる、ステップと、を含み、
前記プランジャが、前記第1の位置において前記プランジャシャフトと動作可能に係合し、
前記プランジャが、前記第2の位置において前記プランジャシャフトから切り離され、前記プランジャシャフトから切り離されると、前記第1の位置に向かって戻るように構成される、方法。 - 前記真空により、前記プランジャを前記プランジャシャフトから切り離す吸引力が生じる、請求項1に記載の方法。
- 前記シリンジの内径が前記第1の位置と比べて前記第2の位置においてより大きく、それにより前記プランジャの前記プランジャシャフトからの前記切り離しが促進される、請求項1に記載の方法。
- 前記プランジャの前記プランジャシャフトとの前記動作可能な係合が、前記プランジャの嵌合機構が前記プランジャシャフトの係合機構と動作可能に係合することを含み、
前記プランジャの前記嵌合機構が、前記プランジャの側壁の半径方向に拡張可能かつ収縮可能な部分に形成された複数のタブであって、前記プランジャの空洞内に突出するタブを含み、前記空洞が前記側壁によって画定され、
前記プランジャシャフトの前記係合機構が、前記プランジャシャフトの終端部分の近位端に形成された溝を含み、
前記プランジャシャフトを前記第2の位置に後退させると、前記プランジャの前記側壁の前記拡張可能かつ収縮可能な部分が拡張して、前記プランジャの前記プランジャシャフトからの前記切り離しを促進する、請求項1に記載の方法。 - 前記シリンジを隔離するステップが、前記下流流路に含まれるチューブ材ラインの少なくとも1つの弁を閉鎖することを含む、請求項1に記載の方法。
- 前記プランジャシャフトを前記第1の位置から前記第2の位置に後退させるステップが、前記プランジャを約5mm/秒〜約8mm/秒の速度で動かす、請求項1に記載の方法。
- 前記プランジャが前記プランジャシャフトから切り離された後、前記プランジャシャフトを前記第1の位置に向かって動かすステップであって、それにより前記プランジャが、前記プランジャと動作可能に係合することなくさらに前記第1の位置に向かって押されるステップをさらに含む、請求項1に記載の方法。
- 前記プランジャシャフトを前記第1の位置から前記第2の位置に後退させた後、前記流体注入システムから前記シリンジ及び前記プランジャを共に取り外すステップをさらに含む、請求項1に記載の方法。
- 前記プランジャシャフトの終端部分が前記シリンジの外側に位置するように、前記プランジャシャフトを前記第2の位置から後退させ、前記シリンジの近位開口から出すステップであって、それにより前記流体注入システムから前記シリンジ及び前記プランジャを共に取り外す前記ステップが促進される、ステップをさらに含む、請求項8に記載の方法。
- 流体リザーバと、
プランジャシャフトと、シリンジと、前記シリンジに装着されたプランジャとを備える流体加圧ユニットであって、前記プランジャシャフトが係合機構を備え、前記流体加圧ユニットの前記プランジャシャフトの前記係合機構が、溝であって、基部と、前記基部から遠位に、前記プランジャシャフトの長手方向軸に対して鋭角で遠位に延在するショルダとを備える溝を含み、前記シリンジが近位開口を備え、前記プランジャが、前記シリンジの内表面と封止係合するワイパ側壁を備え、前記ワイパ側壁によって空洞が画定され、嵌合機構が、前記プランジャシャフトの前記係合機構と取り外し可能に係合するように構成され、前記流体加圧ユニットの前記プランジャの前記嵌合機構が、前記プランジャの前記ワイパ側壁に形成され、且つ前記プランジャの前記空洞内に突出するタブを含む、流体加圧ユニットと、
前記流体リザーバを前記シリンジに連結する送入チューブ材ラインと、
前記シリンジに連結される送出チューブ材ラインと、
交互に、前記送入チューブ材ラインを介した前記シリンジに入る流れを許可し、前記送出チューブ材ラインを介した前記シリンジから出る流れを許可し、前記シリンジを、前記送入チューブ材ライン及び前記送出チューブ材ラインを介したいかなる流れからも隔離するように構成された少なくとも1つの弁と、
前記プランジャシャフトを作動させるために前記プランジャシャフトに連結されたモータアセンブリと、
前記少なくとも1つの弁と前記モータアセンブリとに連結されたコントローラであって、前記コントローラが、前記シリンジをいかなる流れからも隔離するため前記少なくとも1つの弁を閉鎖するように、かつ次に、前記シリンジ内で前記プランジャの下流に真空を生じさせるため、前記モータアセンブリを作動させて前記プランジャシャフトを後退させるようにプログラム可能であり、前記プランジャシャフトの前記係合機構が、最初に前記プランジャの前記嵌合機構によって動作可能に係合され、次に前記少なくとも1つの弁が閉鎖されて前記プランジャシャフトが後退すると、前記プランジャシャフトから切り離されて前記プランジャシャフトから引き離される、コントローラと、を含む、注入システム。 - 前記流体加圧ユニットの前記シリンジが、前記シリンジの前記内表面が前記シリンジの第1の内径を画定する範囲にわたる第1の長さと、前記内表面が前記シリンジの第2の内径を画定する範囲にわたる第2の長さとを備え、前記第1の長さが前記シリンジの前記近位開口から前記第2の長さに向かって延在し、前記第1の内径が前記第2の内径より大きく、
前記プランジャが前記シリンジの前記第1の長さの範囲内にある位置まで前記プランジャシャフトが後退すると、前記流体加圧ユニットの前記プランジャが前記プランジャシャフトから切り離される、請求項10に記載の注入システム。 - 前記プランジャの前記ワイパ側壁が半径方向に拡張可能かつ収縮可能な部分をさらに備え、前記プランジャの前記嵌合機構が前記拡張可能かつ収縮可能な部分に形成され、従って、前記プランジャが前記シリンジの前記第1の長さの範囲内にある位置まで前記プランジャシャフトが後退すると、前記ワイパ側壁の前記拡張可能かつ収縮可能な部分が拡張して、前記プランジャシャフトの前記係合機構からの前記プランジャの前記嵌合機構の切り離しを促進する、請求項11に記載の注入システム。
- 前記プランジャの前記嵌合機構が、前記ワイパ側壁の前記半径方向に拡張可能かつ収縮可能な部分の内表面に形成された複数のタブであって、前記プランジャの前記空洞内に突出する複数のタブを備える、請求項12に記載の注入システム。
- 前記プランジャの前記半径方向に拡張可能かつ収縮可能な部分が、前記ワイパ側壁の内表面に形成され、且つ前記プランジャの前記空洞の周囲にわたって互いに離間された複数の長手方向に延在するリブを備える、請求項12に記載の注入システム。
- 前記プランジャの前記嵌合機構が、前記半径方向に拡張可能かつ収縮可能な部分の前記複数のリブの少なくとも一部の各々に形成されたタブであって、各々が前記プランジャの前記空洞内に突出するタブを備える、請求項14に記載の注入システム。
- 前記流体加圧ユニットの前記プランジャが、変形可能な遠位端面壁であって、そこから前記ワイパ側壁が延在する遠位端面壁をさらに備え、
前記流体加圧ユニットの前記プランジャシャフトが、前記プランジャの前記嵌合機構が前記プランジャシャフトの前記係合機構に係合するとき、前記プランジャの前記空洞内に完全に挿入される終端部分を備え、
前記プランジャシャフトの前記終端部分が遠位終端面を備え、且つ前記終端部分が前記プランジャの前記空洞内に完全に挿入されると、前記終端部分の前記遠位終端面と前記プランジャの前記変形可能な遠位端面壁との間に間隙が存在するようなサイズ及び形状を有する、請求項10に記載の注入システム。 - 前記プランジャの前記ワイパ側壁が、前記プランジャの前記変形可能な遠位端面壁に近接して位置する外側シールリップを備える、請求項16に記載の注入システム。
- 前記シリンジ及び前記シリンジに装着された前記プランジャが、前記注入システムに組み付けられる前は、セットとしてパッケージ化された使い捨てサブアセンブリを含む、請求項10に記載の注入システム。
- 前記使い捨てサブアセンブリが、前記送入チューブ材ライン及び前記送出チューブ材ラインをさらに含む、請求項18に記載の注入システム。
- 前記シリンジが、前記送入チューブ材ラインが連結される第1の遠位ポートと、前記送出チューブ材ラインが連結される第2の遠位ポートとをさらに備え、
前記少なくとも1つの弁が、前記送入チューブ材ラインとインラインで連結された第1の弁と、前記送出チューブ材ラインとインラインで連結された第2の弁とを含む、請求項10に記載の注入システム。
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US12/324,087 US8613730B2 (en) | 2008-11-26 | 2008-11-26 | Apparatus and methods for fluid pressurizing units of injection systems |
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