JP6882377B2 - 流体流制御弁と流れ制御装置とそれを用いる方法 - Google Patents
流体流制御弁と流れ制御装置とそれを用いる方法 Download PDFInfo
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Description
P=4πEt(D−d)/d
ここで、
Eは、弁体70の材料にとっての弾性係数
dは、力が緩められた、力が加えられていない状態における、管部またはスリーブ78の内径
Dは、球状の弁部材72の外径
tは、管部またはスリーブ78の壁の厚み
Pは、弁を開放するための内圧
である。
上述の記載を限定することなく、または、逸脱することなく、本主題のさらなる特徴、実施形態、または局面は、以下を含む。
Claims (12)
- 入口と出口とを有する弁空間を規定する弁ハウジングと、
前記弁空間内において前記入口と前記出口との間に配置されて全体的に円筒状の形状の流体流内腔を有する弁体と、
前記弁体の前記流体流内腔内に位置する全体的に球状の形状の弁部材とを含み、
前記弁体は弾性であり、前記弁体と前記弁部材とはそれぞれ前記弁体に力が加えられていない状態において前記弁部材と前記弁体との間に環状の接触を与えるように前記弁部材の断面積が前記流体流内腔よりも大きい大きさにされ、前記環状の接触は前記入口からの流体圧がなければ前記流体流内腔を通る流体流を実質的に遮断し、
弾性のある前記弁体の弾性は、前記弁部材と流体流内腔表面とが接触して流れを遮断する通常の閉鎖位置と、前記弁体と前記弁部材の少なくとも1つが離間位置に向かって屈曲してそれらの間の流体流を許容する前記入口からの流体圧に応じた開放位置との間で屈曲を許容し、そして、
前記弁体は、前記弁体と前記弁部材との間の封止接触を強めるために少なくとも部分的に前記弁体の下流の流体からの圧力に曝される外表面を含む、流体流制御弁。 - 前記弁体は、基礎部と、前記基礎部から延びる中空のスリーブとを含み、前記スリーブの内部は前記流体流内腔を規定し、前記スリーブの一端と連通する前記基礎部内の流体流内腔を含み、前記スリーブの他端は開放されて前記出口と連通しており、前記弁部材は前記スリーブ内に配置されている、請求項1に記載の流体流制御弁。
- 前記弁空間の入口に隣接する流体吸収部材をさらに備える、請求項1に記載の流体流制御弁。
- 前記弁体は、前記流体流内腔を通過する流体に対して、前記弁部材において流れに曝される表面に及ぼされる前記弁体の下流の流体からの圧力によってさらなる封止を与えるための前記弁部材による係合のために、前記流体流内腔内において前記弁部材と前記入口との間に環状の弁座を含む、請求項1に記載の流体流制御弁。
- 前記環状の弁座は、放射状の肩部を備える、請求項4に記載の流体流制御弁。
- 前記弁体はシリコーンによって形成されている、請求項1に記載の流体流制御弁。
- 前記スリーブは、40以上のショアA硬度を有するゴム状材料によって形成されている、請求項2に記載の流体流制御弁。
- 注射装置ハウジングと、
医療用流体を受容するための前記注射装置ハウジング内の貯留部と、
医療用流体を前記注射装置ハウジングの外の流体源から受容するための前記注射装置ハウジング内の入口ポートと、
前記入口ポートと前記貯留部との間を連通する前記注射装置ハウジング内の流体流路とを備え、
前記流体流路は一方向弁を含み、前記一方向弁は、請求項1から請求項7までのいずれか1項に記載の流体流制御弁である、医療用流体注射装置。 - 前記弁体を含む弁体空間を規定する流体流マニフォルドをさらに備える、請求項8に記載の医療用流体注射装置。
- 注射装置ハウジングと、
医療用流体を受容するための前記注射装置ハウジング内の弾性で膨張可能な貯留部と、
前記注射装置ハウジングによって担持される注射針と、
前記注射針と前記貯留部との間を連通するための注射流路と、
加圧下で医療用流体を前記注射装置ハウジングの外の流体源から受容するための前記注射装置ハウジング内の入口ポートと、
医療用流体を貯留部内に導入するために前記入口ポートと前記貯留部との間を連通する前記注射装置ハウジング内の入口流体流路とを備え、
前記入口流体流路は、前記入口ポートから前記貯留部内への流体流を許容し、前記貯留部から前記入口ポートへの流体流を妨げるための一方向弁を含み、
前記一方向弁は、請求項1から請求項7までのいずれか1項に記載の流体流制御弁である、医療用流体注射装置。 - 前記弁体を含む弁体空間を規定する流体流マニフォルドをさらに備える、請求項10に記載の医療用流体注射装置。
- 注射装置ハウジングと、
前記注射装置ハウジング内の弾性で膨張可能な貯留部と、
前記注射装置ハウジングの外の流体源からの医療用流体を受容するための前記注射装置ハウジング内の入口ポートと、前記注射装置ハウジングからの流体の流れのための前記注射装置ハウジング内の出口ポートと、前記入口ポートと前記貯留部との間と前記貯留部と前記出口ポートとの間の流体流路とを備え、
前記入口ポートと前記貯留部との間の前記流体流路は、前記入口ポートから前記貯留部内への流体流を許容し、前記貯留部から前記入口ポートへの流体流を妨げるための通常閉鎖されている一方向弁を含み、前記一方向弁は弁体を含み、前記弁体は、全体的に円筒状の形状の流体流内腔を内部に規定する、弾性で中空のスリーブ部と、前記入口ポートから前記流体流内腔の一端に入る流体流のための弁体入口と、前記流体流内腔の他端から前記貯留部内への流体流のための弁体出口とを含み、
弾性な前記スリーブ部の前記流体流内腔内に位置する実質的に別個の剛性の全体的に球状の形状の弁部材を備え、
前記弁部材は、前記スリーブ部が膨張していないとき、前記弁部材と前記スリーブ部との間に環状の第1の封止を与え、前記流体流内腔を通る前記貯留部から前記入口ポートへの流れを遮断するように、前記スリーブ部が通常、環状の内側に向かう力を前記弁部材の外表面に対して及ぼすように、前記弁部材が弾性の前記スリーブ部の前記流体流内腔よりも大きい大きさであり、前記スリーブ部は、前記弁体と弁部材との間と弾性の前記貯留部内への流体流を許容するために前記入口ポートからの流体圧下において弾性的に膨張可能であり、前記スリーブ部は前記一方向弁と前記貯留部との間の流体流路と流体連通である外表面を有し、
前記弁体は、前記弁部材と前記弁体入口との間において前記流体流内腔内の環状の弁座をさらに規定し、前記貯留部からの流体流に対して、前記弁部材において流れに曝される表面に及ぼされる前記弁体の下流の流体からの圧力によって追加の封止を与えるために、前記弁座は前記弁部材によって通常の閉鎖状態において接触され、前記弁部材は、前記弁座と前記弁部材との間で前記流体流内腔を通過する流体流を許容するために、前記入口ポートからの流体圧下において前記弁座から離れるように移動可能である、医療用流体制御装置。
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US11771841B2 (en) | 2020-12-23 | 2023-10-03 | Tolmar International Limited | Systems and methods for mixing syringe valve assemblies |
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