JP2016026095A - 制御された拍動的洗浄機能を有する洗浄用シリンジアセンブリ - Google Patents
制御された拍動的洗浄機能を有する洗浄用シリンジアセンブリ Download PDFInfo
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Abstract
Description
Claims (26)
- 洗浄用シリンジアセンブリであって、
流体を収容するための液室を画定する内面を有する側壁と、開放近位端と、遠位壁およびそこから遠位方向に延びて、前記液室と流体連通する通路が通っている先端を持つ遠位端と、を有する外筒であって、その内面に第一の拍動発生要素を備える外筒と、
前記外筒内に配置された押子であって、遠位端と、近位端と、前記遠位端から前記近位端に延びる押子本体と、を含むとともに、遠位方向に面する傾斜面をもつ第二の拍動発生要素を有する、押子と、
前記押子の前記近位端に摺動可能に取り付けられる母指押込み部と、
前記母指押込み部と前記押子の前記近位端との間に配置された拍動制御要素と、
前記押子の前記遠位端に配置され、前記外筒の前記内面と液密密着状態を確立するストッパと、
を含み、
前記遠位方向に面する傾斜面は、前記第一の拍動発生要素と係合して前記押子に加えられる遠位方向の力に抵抗する係合力を提供し、前記母指押込み部に前記遠位方向に加えられる力が前記係合力より大きいことで、前記押子が前記外筒内で遠位方向に移動するときに前記押子の拍動的運動を起こさせることを特徴とする洗浄用シリンジアセンブリ。 - 前記拍動制御要素は、前記母指押込み部に遠位方向の力が加えられると圧縮して圧縮力を発生させ、前記遠位方向の力が解除されると伸張するばねを含むことを特徴とする、請求項1に記載の洗浄用シリンジアセンブリ。
- 前記ばねは、前記母指押込み部に遠位方向の力を連続的に加えることによって前記圧縮力が増大し、最終的に係合力より大きくなり、前記第一の拍動発生要素が前記第二の拍動発生要素から外れ、前記押子が遠位方向に移動できるようなばね定数を有することを特徴とする、請求項2に記載の洗浄用シリンジアセンブリ。
- 前記ばね定数は、前記第一の拍動発生要素と前記第二の拍動発生要素が外れることによって、前記ばねが伸張し、前記圧縮力が減少するような定数であることを特徴とする、請求項3に記載の洗浄用シリンジアセンブリ。
- 前記母指押込み部は、近位端と、遠位端と、前記母指押込み部の前記遠位端に配置された複数の係合タブと、をさらに含み、前記押子は複数の開口部をさらに備え、該開口部は、遠位端と、近位端と、前記遠位端と前記近位端の間の、前記係合タブを受けるための長さとを有し、前記係合タブは、前記母指押込み部に前記遠位方向の前記圧縮力が加えられ、前記圧縮力が解除されると、前記複数の開口部の前記長さに沿って摺動するように構成されていることを特徴とする、請求項2に記載の洗浄用シリンジアセンブリ。
- 前記母指押込み部はロッキング要素を備え、該ロッキング要素は、前記ストッパが前記外筒の前記遠位壁と接触したときに前記第一の拍動発生要素と係合して前記母指押込み部を少なくとも部分的に前記外筒内にロックし、前記拍動制御要素に前記押子への遠位方向の力をかけさせることを特徴とする、請求項1に記載の洗浄用シリンジアセンブリ。
- 前記押子は前記外筒の中で回転可能であり、これにより、前記第二の拍動発生要素が前記第一の拍動発生要素と整列しないで、前記押子が前記外筒内で遠位方向に移動するときに前記押子が連続的かつスムーズに移動することを特徴とする、請求項1に記載の洗浄用シリンジアセンブリ。
- 前記第一の拍動発生要素は、内側に向かって前記外筒の前記液室内へと伸びる保持リングを含むことを特徴とする、請求項1に記載の洗浄用シリンジアセンブリ。
- 突起が近位方向に面する垂直面を含むことを特徴とする、請求項1に記載の洗浄用シリンジアセンブリ。
- 前記近位方向に面する垂直面が前記第一の拍動発生要素と係合して、前記外筒内での前記押子の近位方向の移動を阻止することを特徴とする、請求項1に記載の洗浄用シリンジアセンブリ。
- 前記押子は、前記押子本体に沿って配置された複数の突起を含むことを特徴とする、請求項1に記載の洗浄用シリンジアセンブリ。
- 前記複数の突起は、前記押子本体に沿って一定間隔で配置されることを特徴とする、請求項11に記載の洗浄用シリンジ。
- 洗浄用シリンジアセンブリであって、
流体を収容するための液室を画定する内面を有する側壁と、開放近位端と、遠位壁およびそこから遠位方向に延びて、前記液室と流体連通する通路が通っている先端を持つ遠位端と、を有する外筒であって、前記外筒の前記開放近位端が内側に向かって前記液室内に延びる少なくとも1つの突出部を前記開放近位端に有する外筒と、
前記外筒内に配置され、遠位端および近位端をもつ圧縮可能な押子本体と、前記押子本体に沿って配置された複数の突起とを有する押子であって、各々の突起は、遠位方向に面する傾斜面および近位方向に面する垂直面を有し、これにより母指押込み部に遠位方向の力が加えられて、前記遠位方向に面する傾斜面の前記外筒の突出部に対する係合を生じさせて可変的な干渉力が提供されるとともに、前記押子が前記外筒内で遠位方向に移動するときに、前記押子を拍動的に移動させて前記洗浄用溶液にパルス状の流れを起こさせ、前記押子本体が、ばねを含む中空部分をさらに備え、前記ばねは、前記ばねが当初は圧縮されて前記干渉力より小さい力を発生させ、前記母指押込み部にさらに遠位方向の力が加えられると、前記ばねが圧縮して、前記干渉力より大きな力を発生させるようなばね定数を有する押子と、
前記押子の前記遠位端に配置され、前記外筒の前記内面と液密密着状態を確立するストッパと、
を含むことを特徴とする洗浄用シリンジアセンブリ。 - 前記圧縮可能な押子本体は、前記押子の前記近位端に取り付けられた入れ子式伸縮セグメントを備え、前記入れ子式伸縮セグメントは、摺動して前記押子本体に出入りし、前記押子本体の長さを増減するように構成されていることを特徴とする、請求項13に記載の洗浄用シリンジアセンブリ。
- 前記ばねは、前記入れ子式伸縮セグメントと前記押子本体の間に配置され、前記押子に遠位方向の力が加えられると圧縮して圧縮力を発生させ、前記圧縮力が解除されると伸張することを特徴とする、請求項14に記載の洗浄用シリンジアセンブリ。
- 前記ばねの伸張によって、前記入れ子式伸縮セグメントは摺動して前記押子本体から出て、前記押子本体の長さを増大させ、前記ばねの圧縮によって、前記入れ子式伸縮セグメントは摺動して前記押子本体の中に入り、前記押子本体の長さを減少させることを特徴とする、請求項15に記載の洗浄用シリンジアセンブリ。
- 前記近位方向に面する垂直面と前記前記外筒の前記突起との相互作用によって、近位方向への前記押子の移動が阻止されることを特徴とする、請求項13に記載の洗浄用シリンジアセンブリ。
- 前記押子はロッキング要素を備え、該ロッキング要素は、前記ストッパが前記外筒の前記遠位壁と接触したときに前記外筒の前記突出部と係合して前記押子の少なくとも一部を前記外筒内にロックし、前記ばねに前記押子への遠位方向の力をかけさせることを特徴とする、請求項13に記載の洗浄用シリンジアセンブリ。
- 前記外筒の前記近位端に、いかなる突出部もない部分があり、前記押子は前記外筒の中で回転可能であり、これにより、前記複数の突起がいかなる突出部もない前記部分と整列し、前記押子が前記外筒内で遠位方向に移動するとき前記押子が連続的かつスムーズに移動することを特徴とする、請求項13に記載の洗浄用シリンジアセンブリ。
- 洗浄用シリンジアセンブリであって、
流体を収容するための液室を画定する内面を有する側壁と、開放近位端と、遠位壁およびそこから遠位方向に延びて、前記液室と流体連通する通路が通っている先端を持つ遠位端と、を有する外筒であって、その内面に第一の拍動発生要素を備える外筒と、
前記外筒内に配置され、遠位端と、近位端と、前記遠位端から前記近位端に延びる押子本体と、を有する押子であって、前記第一の拍動発生要素と係合して、前記押子が前記外筒内で遠位方向に移動するとき、前記押子の拍動的運動を起こさせる係合力を発生させる第二の拍動発生要素を有する押子と、
前記押子の前記近位端に摺動可能に取り付けられる母指押込み部と、
前記母指押込み部と前記押子の前記近位端との間に配置された拍動制御要素と、
前記押子の前記遠位端に配置され、前記外筒の前記内面と液密密着状態を確立するストッパと、
を含み、
前記母指押込み部はロッキング要素を備え、該ロッキング要素は、前記ストッパが前記外筒の前記遠位壁と接触したときに前記第一の拍動発生要素と係合して前記母指押込み部を少なくとも部分的に前記外筒内にロックし、前記拍動制御要素に前記押子への遠位方向の力をかけさせることを特徴とする洗浄用シリンジアセンブリ。 - 前記第二の拍動発生要素は、前記第一の拍動発生要素と係合しないように配列可能であり、それによって押子が前記外筒内で遠位方向に移動する際、押子を連続的かつスムーズに移動させることを特徴とする、請求項20に記載の洗浄用シリンジアセンブリ。
- 前記第一の拍動発生要素は、内側に向かって前記外筒の前記液室内へと伸びる保持リングを含むことを特徴とする、請求項20に記載の洗浄用シリンジアセンブリ。
- 前記第二の拍動発生要素は、前記押子本体に沿って配置された複数の突起を含み、前記複数の突起は前記押子本体から外側に向かって延びることを特徴とする、請求項22に記載の洗浄用シリンジアセンブリ。
- 前記複数の突起は、前記押子本体に沿って一定間隔で配置されることを特徴とする、請求項23に記載の洗浄用シリンジ。
- 前記液室内に所定の量の洗浄用溶液をさらに有することを特徴とする、請求項20に記載の洗浄用シリンジアセンブリ。
- 前記洗浄用溶液は、生理食塩水とヘパリンからなる群から選択されることを特徴とする、請求項25に記載の洗浄用シリンジアセンブリ。
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