JP2010078608A - 液体試料採集装置及び血液採集方法 - Google Patents
液体試料採集装置及び血液採集方法 Download PDFInfo
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Abstract
【解決手段】内部キャピラリーストップを境界とする血液試料保持チャンバに液体を連通する試料注入口を有したハウジングを含んで構成され、血液試料保持チャンバが、少なくとも一部分に、水溶性タンパク質、水酸基を含むポリマー、アミノ酸、糖類又は塩からなる群から選択された化合物を含む反応混液で被覆され、複数滴以上の血液が、前記血液試料保持チャンバ内で連続したセグメントを形成することを特徴とする気泡を伴わない注入口を有した液体試料採集装置とする。
【選択図】図4
Description
前記血液試料保持チャンバが、少なくとも一部分に、水溶性タンパク質、水酸基を含むポリマー、アミノ酸、糖類又は塩からなる群から選択された化合物を含む反応混液で被覆され、複数滴以上の血液が、前記血液試料保持チャンバ内で連続したセグメントを形成することを特徴とする気泡を伴わない注入口を有した液体試料採集装置を提供することにある。
ハウジングと、内部キャピラリーストップを境界とする血液試料保持チャンバに液体を連通する試料注入口を備えた、前記ハウジングに設けられた少なくとも1つの実質的に平坦な表面と、を含んで構成された試料採集装置に、2滴以上の血液を加えること、を含み、
前記血液試料保持チャンバが、少なくとも一部分に、水溶性タンパク質、水酸基を含むポリマー、アミノ酸、糖類又は塩からなる群から選択された化合物を含む反応混液で被覆されて、血液が、毛管力によって前記試料注入口から前記保持チャンバ内に引き込まれ、及び、前記反応混液が、気泡の発生を防止して前記保持チャンバ内に血液の連続したセグメントを提供することを特徴とする血液採集方法を提供することにある。
支持マトリックスにおいて、ヤギIgG、マウスIgG、ヘパリン、デキストラン、トリスバッファ、プロクリン及び塩化ナトリウムを含んで構成されることを特徴とする乾燥試薬組成を提供することにある。
1.C無、R無:血液の引き込みは認められなかった。
2.C無、R有:保持チャンバを試薬で確実に被覆しなかったため結果は上記1に同じ。
3.C有、R無:数週間の間は、迅速な血液の引き込みが確認されたが、時間の経過と
共に引き込み率が低下。
4.C有、R有:血液の引き込みは迅速良好で、更に、6ヵ月(一般的な商品寿命)の
間、引き込みが持続。
表面−第1抗体(Ab1)〜分析対象物質〜Ab2−酵素 酵素+S→P 式(1)
表面〜Ab2−酵素 酵素+S→P 式(2)
表面〜分析対象物質−Ab2−酵素 酵素+S→P 式(3)
補正信号=IS−IRS 式(4)
iNet = ParamAct-ParamRef-c0(ナノアンペア) 式(5)
ここで、係数c0は、全血や血漿が未導入である場合のamp0及びampl間におけるバイアス、即ち、分析対象物質が存在しない場合のあらゆるバイアスとして決定される、カートリッジの製造ロットに固有な任意の値である。
iTCorr = iNet *(1+ c1 *(ATemp-TempC)) 式(6)
ここで、係数c1(per degree)の値は、一般に、カートリッジの製造ロットに固有のものではなく、カートリッジの製造工程に固有のものである。また、係数c1は、一般的に、相対的に小さな値となる(例えば、1〜3%)。当業者であれば、これを温度−依存実験から測定できることを認識可能である。
fCond = c2 * ResHct2 + c3 * ResHct + c4 式(7)
ここで、ResHctは、試料が試薬によって補正された後のヘマトクリット(伝導率)センサにおける抵抗である。
ResHct < MaxPlasmaCondであれば fCond = 1 に設定 式(8)
ResHct > MaxPlasmaCond 且つ fCond < MinfCondであれば、
fCond = MinfCond に設定 式(9)
ここで、MaxPlasmaCond = 1050、及びMinfCond = 0.8である。
iCorr= iTCorr/fCond 式(10)
[cTnI](ng/mL) = c6*iCorr/(c5*c6-iCorr) 式(11)
[cTnI](ng/mL) = c7*iCorr2 + c7*c8*iCorr 式(12)
[cTnI](ng/mL) = c6*iCorr/(c5*c6-iCorr)+ c7*iCorr2 + c7*c8*iCorr
= c6*iCorr/(c5*c6-iCorr)+ c7 * Corr2 + Linear* iCorr 式(13)
iCorr > 0.9*c5*c6であれば、iCorr = 0. 9*c5*c6に設定 式(14)
H2N-C6H4-OH → HN=C6H4=O + 2H+ + 2e-
1) 25〜50uLの試料が、試料注入口167に導入され、該試料注入口167からキャピラリーストップ151まで充填される。キャピラリーストップ151は、カバー及びベースの各構成要素をつなぎ合わせる接着テープに設けられた0.012インチのレーザ切除穴である。ユーザは、スナップ・フラップ(snap flap)上に取り付けられたラテックスゴムディスクを回転させて試料注入口167を閉じ、カートリッジを分析装置に挿入する。
2) 分析装置がカートリッジに接触すると、モータ駆動プランジャが箔袋161を押圧し、洗浄/分析液体が中央導管158に流れ込む。
3) 別個のモータ駆動プランジャが試料ダイヤフラム156に接触し、該試料ダイヤフラム156が、計量された試料セグメントを試料導管に沿って(試薬領域R1〜R2にかけて)押し出す。これにより、試料は、伝導度センサを介してセンサチップ153で検出される。このセンサチップはキャプチャー領域R3に配置されている。
4) 試料は、センサとの結合を促進するために制御時間だけ、予め定められ及び制御された方法下において、R2〜R5との間を試料ダイヤフラム156によって往復させられる。
5) 試料は、カートリッジの廃棄領域(R8)方向に押し出され、セルロース又は類似の吸収ウィック(wick)によって提供される受動的ポンプ157に接触させられる。このウィックを濡らす動作は、空気の流れを密閉する。この密閉によって、試料ダイヤフラム156が発生する超過圧力を排気するための排気機能が取り除かれる。能動的ベントは、図16に示した「制御エアーベント」になる。
6) 試料導管の急速な排気(モータ駆動プランジャを試料ダイヤフラム156から引き戻すことにより生じる)は、(ベントからの)空気と第2導管からの洗浄/分析液体との混合物を、図16のR5とR4との間に設けられた注入口に移動させる。試料導管において、急速な排気を繰り返すと、空気で区分けされた連続する液体セグメントが生み出され、センサチップを横断し試料注入口方向へと(即ち、R4、R3、R2、R1へと順番に)導かれる。これによりセンサは、洗浄されて余分な試薬が除去され、さらに、分析に適した試薬で湿らされるようになる。また、箔袋からの洗浄/分析液体は、中央の洗浄/分析液体導管内のR7及びR6における加えられた試薬によって、さらに補正される。
7) 洗浄/分析液体セグメントは、センサチップに対して分析液体の薄層だけが提供されるように、低速で試料注入口方向に引っ張られる。この段階で電気化学分析が実行される。分析方法は、好ましくは電気滴定法であるが、電位差滴定法又はインピーダンス検出であってもよい。
8) カートリッジを分析装置から外すことができるように、分析装置の機構が後退する。
Claims (20)
- 内部キャピラリーストップを境界とする血液試料保持チャンバに液体を連通する試料注入口を有したハウジングを含んで構成され、
前記血液試料保持チャンバが、少なくとも一部分に、水溶性タンパク質、水酸基を含むポリマー、アミノ酸、糖類又は塩からなる群から選択された化合物を含む反応混液で被覆され、複数滴以上の血液が、前記血液試料保持チャンバ内で連続したセグメントを形成することを特徴とする気泡を伴わない注入口を有した液体試料採集装置。 - 前記血液試料保持チャンバが、コロナ処理されていることを特徴とする請求項1に記載の液体試料採集装置。
- 試料は、前記保持チャンバ内において、1uL〜1mLの範囲内で一定の体積が保持されることを特徴とする請求項1に記載の液体試料採集装置。
- 試料の体積は、5〜50uLの範囲内であることを特徴とする請求項1に記載の液体試料採集装置。
- 前記血液試料保持チャンバが、プラスチックで形成されていることを特徴とする請求項1に記載の液体試料採集装置。
- 前記反応混液は、ウシ血清アルブミン(BSA)を含んで構成されることを特徴とする請求項1に記載の液体試料採集装置。
- 前記反応混液は、BSA、グリシン、ポリエチレングリコール(PEG)及び糖類を含んで構成されることを特徴とする請求項1に記載の液体試料採集装置。
- 前記PEGはメトキシポリエチレングリコールであり、前記糖類はスクロースであることを特徴とする請求項1に記載の液体試料採集装置。
- 複数滴以上の血液を保持チャンバ内で連続したセグメントに形成する血液採集方法であって、
ハウジングと、内部キャピラリーストップを境界とする血液試料保持チャンバに液体を連通する試料注入口を備えた、前記ハウジングに設けられた少なくとも1つの実質的に平坦な表面と、を含んで構成された試料採集装置に、2滴以上の血液を加えること、を含み、
前記血液試料保持チャンバが、少なくとも一部分に、水溶性タンパク質、水酸基を含むポリマー、アミノ酸、糖類又は塩からなる群から選択された化合物を含む反応混液で被覆されて、血液が、毛管力によって前記試料注入口から前記保持チャンバ内に引き込まれ、及び、前記反応混液が、気泡の発生を防止して前記保持チャンバ内に血液の連続したセグメントを提供することを特徴とする血液採集方法。 - 前記血液試料保持チャンバが、コロナ処理されていることを特徴とする請求項9に記載の血液採集方法。
- 試料は、前記保持チャンバ内において、1uL〜1mLの範囲内で一定の体積が保持されることを特徴とする請求項9に記載の血液採集方法。
- 試料の体積は、5〜50uLの範囲内であることを特徴とする請求項9に記載の血液採集方法。
- 前記血液試料保持チャンバが、プラスチックで形成されていることを特徴とする請求項9に記載の血液採集方法。
- 前記反応混液は、ウシ血清アルブミン(BSA)を含んで構成されることを特徴とする請求項9に記載の血液採集方法。
- 前記反応混液は、BSA、グリシン、ポリエチレングリコール(PEG)及び糖類を含んで構成されることを特徴とする請求項9に記載の血液採集方法。
- 前記PEGはメトキシポリエチレングリコールであり、前記糖類はスクロースであることを特徴とする請求項9に記載の血液採集方法。
- 一部が、コロナ処理され、一部が、少なくとも水溶性タンパク質及び水酸基を含むポリマーを含んで構成される乾燥試薬混合物で被覆されている導管を含んで構成されたことを特徴とする血液受信装置。
- 全血免疫測定の前に全血に溶解させる乾燥試薬組成であって、
支持マトリックスにおいて、ヤギIgG、マウスIgG、ヘパリン、デキストラン、トリスバッファ、プロクリン及び塩化ナトリウムを含んで構成されることを特徴とする乾燥試薬組成。 - 前記支持マトリックスが、セルロース、ポリビニールアルコール、ゼラチン又はこれらの混合物であることを特徴とする請求項18に記載の乾燥試薬組成。
- 前記試薬が、アジ化ナトリウム及びTween20を含んで構成されることを特徴とする請求項18に記載の乾燥試薬組成。
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EP1668339A2 (en) | 2006-06-14 |
EP1668339A4 (en) | 2010-09-22 |
US20120252032A1 (en) | 2012-10-04 |
CA2538778C (en) | 2013-08-27 |
US20110269153A1 (en) | 2011-11-03 |
JP4461393B2 (ja) | 2010-05-12 |
US7682833B2 (en) | 2010-03-23 |
CA2538778A1 (en) | 2005-03-24 |
WO2005026690A3 (en) | 2006-12-07 |
US8765075B2 (en) | 2014-07-01 |
US8216853B2 (en) | 2012-07-10 |
US7981387B2 (en) | 2011-07-19 |
JP5221493B2 (ja) | 2013-06-26 |
US20100061890A1 (en) | 2010-03-11 |
US8377392B2 (en) | 2013-02-19 |
US20110269222A1 (en) | 2011-11-03 |
US8182770B2 (en) | 2012-05-22 |
US20050054078A1 (en) | 2005-03-10 |
WO2005026690A2 (en) | 2005-03-24 |
JP2007511740A (ja) | 2007-05-10 |
US20120315647A1 (en) | 2012-12-13 |
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