JP6257521B2 - 逐次分注および沈降速度の指標の決定 - Google Patents
逐次分注および沈降速度の指標の決定 Download PDFInfo
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Description
−上述のように、血液試料および最初の血液チャンバから半径方向外側に配置された複数の血液アリコートチャンバを保持することができる最初の血液チャンバを含む回転可能なカートリッジと、
−複数のアリコートチャンバへの血液試料の逐次分注とその後の各血液アリコートチャンバ内に存在する血液の完全沈降を提供するために、軸の周りにカートリッジを回転させることが可能なモータと、
−アリコート構造の領域にあるカートリッジを照明するために配置された光源と、
−各血液アリコートチャンバに存在する血液細胞と血漿の界面を測定することが可能な光検出器と、
−光検出器に接続され、各血液アリコートチャンバにおける血液細胞と血漿の間の界面の位置の情報に基づいて前記血液試料における赤血球沈降速度(ESR)を測定するために配置された赤血球沈降速度プロセッサとを含むことを特徴とするデバイス。
−特定の回転速度でカートリッジを回転させることにより、それの最初のチャンバから複数の血液アリコートチャンバへ血液試料をルーティングするステップと、
−各血液アリコートチャンバに存在する各血液アリコートの完全血液細胞沈降を行うステップと、
−カートリッジを停止し、各血液アリコートチャンバにおける血液細胞と血漿の間の界面を測定するステップと、
−各血液アリコートチャンバの血液細胞と血漿の各界面の位置に基づいて、前記血液試料中の赤血球沈降速度を決定するステップとを含む方法。
Claims (16)
- 液体を取り扱うデバイスであって、当該デバイスは前記デバイス内で液体の流れを駆動するために回転軸の周りに回転可能であり、当該デバイスは、
液体を受け入れ、当該デバイスが前記軸の周りに回転するとき前記液体を分注するように構成された貯留チャンバと、
前記貯留チャンバに接続され、当該デバイスが前記軸の周りに回転するとき貯留チャンバから液体を受け取るように構成された複数の収容チャンバと、
前記複数の収容チャンバを前記貯留チャンバに接続する複数の流体導管とを含み、
前記複数の流体導管は、液体が前記貯留チャンバから前記複数の収容チャンバに流れ、前記液体によって置き換えられるべき気体が前記複数の収容チャンバから排出されることを可能にし、
前記複数の流体導管は、液体を配るために前記複数の収容チャンバの各々に接続された複数の供給導管と、気体が逃げるように前記複数の収容チャンバの各々に接続された複数のベント導管とを含み、
前記1以上の流体導管は、当該デバイスが実質的に一定の回転速度で回転する間、それぞれ異なる時間に前記複数の収容チャンバの各々を充填し始めるように構成され、
各ベント導管は、気体を前記貯留チャンバの中に逃がすように前記貯留チャンバの複数のベントポートの各ベントポートに接続されており、前記複数のベントポートは前記貯留チャンバに沿って互いに半径方向に離間しており、前記複数の収容チャンバの各々に接続された前記複数のベント導管の各々は前記収容チャンバが充填される順番に回転中心から半径方向外側に離間して前記ベントポートに接続されており、
それによって、前記複数のベントポートの少なくとも1つが前記貯留チャンバの液面の半径方向内側にあり、他のベントポートは前記貯留チャンバの液面の半径方向外側にある間、前記他のベントポート上の液頭が、前記他のベントポートに接続された収容チャンバの各々へ液体が対応するベント導管を通して流入するのを妨げることを特徴とするデバイス。 - 当該デバイスが回転し、前記複数のベントポートの最初の1つが前記貯留チャンバの最大充填レベルの半径方向内側に位置するとき、前記貯留チャンバは、前記最大充填レベルの半径方向内側に空気が充填された空間を提供するように構成される、請求項1に記載のデバイス。
- 前記複数のベントポートの最初の1つは、前記貯留チャンバの半径方向に最も内側の側面に位置する請求項1または2に記載のデバイス。
- 各供給導管は、供給多岐導管の異なる供給ポートに接続される、請求項1のデバイス。
- 前の収容チャンバの前記ベント導管は、前のチャンバに続く後続のチャンバ、後続のチャンバの供給導管、あるいはその両方を通して、前のチャンバに通気口をつけるために接続される、請求項4に記載のデバイス。
- 前のチャンバは後続のチャンバの供給導管に接続される、請求項5に記載のデバイス。
- 前記供給多岐導管は、第1から最後の供給ポートに延びた、蛇行部分を含む、請求項4、5または6に記載のデバイス
- 液体を取り扱うデバイスであって、当該デバイスは前記デバイス内で液体の流れを駆動するために回転軸の周りに回転可能であり、当該デバイスは、
液体を受け入れ、当該デバイスが前記軸の周りに回転するとき前記液体を分注するように構成された貯留チャンバと、
前記貯留チャンバに接続され、当該デバイスが前記軸の周りに回転するとき貯留チャンバから液体を受け取るように構成された複数の収容チャンバと、
前記複数の収容チャンバを前記貯留チャンバに接続する複数の流体導管とを含み、
前記複数の流体導管は、液体が前記貯留チャンバから前記複数の収容チャンバに流れ、前記液体によって置き換えられるべき気体が前記複数の収容チャンバから排出されることを可能にし、
前記複数の流体導管は、液体を配るために前記複数の収容チャンバの各々に接続された複数の供給導管と、気体が逃げるように前記複数の収容チャンバの各々に接続された複数のベント導管とを含み、
各ベント導管は、気体を前記貯留チャンバの中に逃がすように前記貯留チャンバの複数のベントポートの対応するベントポートに接続されており、前記複数のベントポートは前記貯留チャンバに沿って互いに半径方向に離間しており、前記複数の収容チャンバの各々に接続された前記複数のベント導管の各々は前記収容チャンバが充填される順番に回転中心から半径方向外側に離間して前記ベントポートに接続されており、
それによって、前記複数のベントポートの少なくとも1つが前記貯留チャンバの液面の半径方向内側にあり、他のベントポートは前記貯留チャンバの液面の半径方向外側にある間、前記他のベントポート上の液頭が、前記他のベントポートに接続された収容チャンバの各々へ液体が対応するベント導管を通して流入するのを妨げることを特徴とするデバイス。 - マイクロ流体デバイスとして構成される、請求項1〜8のいずれかに記載のデバイス。
- 請求項1から9のいずれかに記載のデバイスを用いて、密度の異なる複数の成分が分散混和された液体試料を分析する方法であって、当該方法は、
前記液体試料を最初に含む貯留チャンバと前記複数の収容チャンバとを含むデバイスを前記回転軸の周りに回転させ、前記液体試料を前記複数の収容チャンバに分注するステップと、
前記液体試料を沈降させるステップと、
前記液体試料のアリコートを複数の収容チャンバに順次充填するステップとを含み、
前記液体試料が沈降する間、各収容チャンバは異なる時間で前記液体試料で充填され始め、
当該方法はさらに、
各アリコートにおいて異なる密度の一組の相の間に界面が検出されるまでアリコートの沈降を続けるステップと、
各アリコートにおいて前記界面の各位置を決定するステップと、
検出された前記位置の関数として、前記液体試料の沈降速度の指標を決定するステップとを含むことを特徴とする方法。 - 前記液体試料は血液試料であり、前記一組の相は血清と細胞物質である、請求項10に記載の方法。
- 前記指標を決定するステップは、前記複数の収容チャンバに充填されたアリコートの配列において隣接するアリコートの界面位置間の差分の平均を取るステップと、前記界面の位置が実質的に同じになる一組のアリコートを特定するステップの少なくとも1つを含む、請求項10または11に記載の方法。
- 各収容チャンバにおいて前記界面の位置にもとづいて前記一組の相のより密度が高い相の総体積の値を決定する、請求項10、11または12に記載の方法。
- 1以上の収容チャンバにおいてより軽い相と周囲の気体の間の界面のさらなる位置を検出するステップと、1以上の前記さらなる位置にもとづいて総分注容積を決定するステップと、前記総分注容積の値にもとづいて沈降速度の値を受理または拒否するステップとを含む、10から13のいずれかに記載の方法。
- 請求項1から9のいずれかに記載のデバイスと、複数のアリコートにおいて異なる密度の一組の相の間の各界面を検出するための検出器と、前記検出器に結合したプロセッサとを含むシステムであって、前記プロセッサは請求項11から14のいずれかに記載の方法の各ステップを実行するように構成されることを特徴とするシステム。
- 請求項15に記載のシステムであって、前記システムは前記デバイスを回転させるためのモータを含む、システム。
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