JP2023532124A - 血漿分離および計量のためのデバイスおよび方法 - Google Patents
血漿分離および計量のためのデバイスおよび方法 Download PDFInfo
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Abstract
Description
本出願は、2020年6月29日に出願された米国特許仮出願第63/045,396号の米国特許法第119条(e)項に基づく利益を主張する。上記特許出願の全内容は、参照により本明細書に明示的に組み入れる。
該当しない。
患者からフィンガスティックまたは静脈の試料を採取する。試料デバイスを下降させて、毛細管チャネルを試料と接触させる。試料デバイスの先端における余分な試料は、キムワイプでまたはパラフィルムで取り除く。
Claims (25)
- 少なくとも1つの診断アッセイを実行するために患者の液体検査試料から血漿を分離するための試料デバイスであって:
毛細管流体流の経路を画定し、液体試験試料を試料デバイス内に引き込むための開口部を端部に有する、少なくとも1つのチャネルと;
少なくとも1つのチャネルと流体連通している少なくとも1つのキャビティと;
内面および外面を有し、該内面がキャビティの少なくとも1つの面の少なくとも一部を形成する少なくとも1つの膜であって、凝集した赤血球(RBC)が膜を通って流れるのを実質的に防止する細孔サイズを有する、少なくとも1つの膜と;
キャビティ内に位置し、赤血球結合または凝集物質を含む、少なくとも1つの試薬と、
を含む前記試料デバイス。 - 膜の細孔サイズは、約5ミクロン~約20ミクロンの範囲にある、請求項1に記載の試料デバイス。
- 膜の細孔サイズは5ミクロン未満である、請求項1に記載の試料デバイス。
- 膜の細孔サイズは、個々のRBCが膜を通過するのを実質的に防止する、請求項1に記載の試料デバイス。
- 膜は、ニトロセルロース膜、ポリスルホン膜、セルロース膜、ホウケイ酸膜、レクチン膜、抗ヒト赤血球抗体が埋め込まれた膜、およびそれらの組合せからなる群から選択されている、請求項1に記載の試料デバイス。
- RBC結合または凝集物質は、抗体、凝集タンパク質、レクチン、およびそれらの組合せからなる群から選択されている、請求項1に記載の試料デバイス。
- RBC結合または凝集物質は、コンカナバリンA、レンズマメレクチン、ジャガイモレクチン、スノードロップレクチン、リシン、ピーナッツアグルチニン、ジャカリン、ヘアリーベッチレクチン、小麦胚芽アグルチニン、エルダーベリーレクチン、イヌエンジュヘマグルチニン、ハリエニシダアグルチニン、ヒイロチャワンタケレクチン、抗ヒト赤血球抗体、およびそれらの組合せからなる群かが選択されている、請求項6に記載の試料デバイス。
- RBC結合または凝集物質は、膜の細孔サイズよりも小さい直径を有するビーズに結合している、請求項1に記載の試料デバイス。
- ビーズは、ラテックス、ポリエチレン、金ゾル、鉄、ホウケイ酸塩、ソーダ石灰、およびそれらの組合せからなる群から選択された材料で形成されている、請求項8に記載の試料デバイス。
- ビーズは、関連する色素を有する、請求項8に記載の試料デバイス。
- 色素は、ナフトールグリーンB、フェリシアン化物、メタ重亜硫酸塩、タウリン、およびそれらの組合せからなる群から選択されている、請求項10に記載の試料デバイス。
- 少なくとも1つの試薬は抗凝固剤を含む、請求項1に記載の試料デバイス。
- 抗凝固剤は、ヘパリンナトリウム、ヘパリンリチウム、ワルファリン、リバーロキサバン、ダビガトラン、アピキサバン、エドキサバン、エノキサパリン、フォンダパリヌクス、エチレンジアミン四酢酸(EDTA)、およびこれらの組合せからなる群から選択されている、請求項12に記載の試料デバイス。
- キャビティは、第1の長手方向面、第2の長手方向面、第1の端面、および第2の端面を有し、膜の内面は、キャビティの第1の長手方向面の少なくとも一部を形成している、請求項1に記載の試料デバイス。
- 少なくとも1つのチャネルの少なくとも一部と、キャビティの第2の長手方向面、第1の端面、および第2の端面の各々の少なくとも一部とは、親水性物質でコーティングされている、請求項14に記載の試料デバイス。
- 親水性物質は、スクロース、トレハロース、マルトース、デキストロース、およびそれらの組合せからなる群から選択された糖である、請求項15に記載の試料デバイス。
- キャビティの第2の長手方向面、第1の端面、および第2の端面は、各々、低密度ポリエチレン、高密度ポリエチレン、ポリスチレン、ポリ塩化ビニル、スチレンブタジエン、ポリアクリル酸、ポリ酢酸ビニル、およびそれらの組合せからなる群から選択された少なくとも1つの材料から構成されている、請求項14に記載の試料デバイス。
- 少なくとも1つの膜は、第1の膜および第2の膜を含み、第1の膜の内面は、キャビティの第1の長手方向面の少なくとも一部を形成し、第2の膜の内面は、キャビティの第2の長手方向面の少なくとも一部を形成している、請求項14に記載の試料デバイス。
- 患者の液体検査試料は、試料デバイスによって毛細管作用により採取され、試料デバイスを通して移送される、請求項1に記載の試料デバイス。
- アセンブリであって:
請求項1~19のいずれか1項に記載の試料デバイスと;
反応チャンバを有する反応カートリッジと;
を含み、
ここで、試料デバイスは、該試料デバイスの少なくとも1つのチャネルの端部の開口部が反応カートリッジとの連通から封止されるように、反応チャンバの反応カートリッジ内に位置して固定されている、前記アセンブリ。 - 反応カートリッジは、緩衝液を収容するコンパートメントをさらに含み、該コンパートメントは、反応カートリッジの一部から延びるタブを有する取外し可能なカバーで封止され、それによって、タブの作動により緩衝液が反応チャンバ内に放出される、請求項20に記載のアセンブリ。
- 患者の液体検査試料から血漿を分離する方法であって:
(a)患者の液体試験試料を、請求項1~19のいずれか1項に記載の試料デバイスと接触させる工程であって、患者の液体試験試料の少なくとも一部は、毛細管作用を介して試料デバイスの少なくとも1つのチャネル内に引き込まれ、試料デバイスのキャビティに入り、患者の液体検査試料は少なくとも1つの試薬と混合し、それにより、患者の液体検査試料内のRBCを凝集させる工程と;
(b)試料デバイスを反応カートリッジの反応チャンバ内に配置して固定する工程であって、試料デバイスの少なくとも1つのチャネルの端部の開口部が反応カートリッジとの連通から封止されるように、試料デバイスが固定される、工程と;
(c)緩衝液が試料デバイスの膜の外面に接触するように、反応カートリッジの反応チャンバ内に緩衝液を放出し、それにより、試料デバイスのキャビティ内の凝集したRBCに結合していないRBC結合または凝集物質を含む試薬が、膜を通って反応チャンバ内の緩衝液内に拡散する、工程と
を含む前記方法。 - 患者の液体試験試料から血漿を分離し計量する方法としてさらに定義され、
(d)内部に試料デバイスが固定されている反応カートリッジを機器内に配置する工程と;
(e)反応チャンバ内の緩衝液の少なくとも1つの吸光度値を測定する工程と;
(f)少なくとも1つの吸光度値に基づいて、反応チャンバ内に存在する血漿の推定体積を決定する工程と
を含む、請求項22に記載の方法。 - 患者の液体検査試料は、ある体積の全血を含む、請求項22に記載の方法。
- 全血の体積は、約10マイクロリットル~約30マイクロリットルの範囲にある、請求項22に記載の方法。
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US5135719A (en) * | 1986-10-29 | 1992-08-04 | Biotrack, Inc. | Blood separation device comprising a filter and a capillary flow pathway exiting the filter |
US5064541A (en) * | 1989-04-07 | 1991-11-12 | Abbott Laboratories | Devices and methods for the collection of a predetermined volume of plasma or serum |
JPH05188053A (ja) * | 1992-01-10 | 1993-07-27 | Sanwa Kagaku Kenkyusho Co Ltd | 血液から血清又は血漿成分を分離する器具 |
US5589399A (en) * | 1994-10-21 | 1996-12-31 | First Medical, Inc. | System and method for plasma separation and measurement |
US5981294A (en) * | 1995-11-29 | 1999-11-09 | Metrika, Inc. | Device for blood separation in a diagnostic device |
US5879624A (en) * | 1997-01-15 | 1999-03-09 | Boehringer Laboratories, Inc. | Method and apparatus for collecting and processing blood |
US6780617B2 (en) * | 2000-12-29 | 2004-08-24 | Chen & Chen, Llc | Sample processing device and method |
US6036659A (en) * | 1998-10-09 | 2000-03-14 | Flexsite Diagnostics, Inc. | Collection device for biological samples and methods of use |
EP1580551B1 (en) * | 2002-11-19 | 2013-02-20 | Sekisui Medical Co., Ltd. | Plasma or serum separation membrane and filter apparatus including the plasma or serum separation membrane |
US20080017577A1 (en) | 2006-07-21 | 2008-01-24 | Becton, Dickinson And Company | Membrane-based Double-layer Tube for Sample Collections |
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