JPWO2006035875A1 - 多層分析要素の製造方法 - Google Patents
多層分析要素の製造方法 Download PDFInfo
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Abstract
Description
好ましくは、機能層の上面に接着剤を塗布して接着層を設けた後に、該接着層の上面に非繊維性多孔膜をラミネートすることにより多孔性液体試料展開層を設けることができる。
本発明による液体試料分析用乾式多層分析要素の製造方法は、水不透過性平面支持体の片面上に、少なくとも1つの機能層を設け、該機能層の上面に接着層を設け、該接着層の上面に少なくとも1つの非繊維性多孔膜からなる多孔性液体試料展開層を設け、該多孔性液体試料展開層の上面に水溶性ポリマーを塗布することを特徴とする。
また、非繊維性多孔膜の平均孔径は、好ましくは0.3〜10μmであり、さらに好ましくは0.45〜5μmである。
(試薬層)
試薬層は水性液体中の被検成分と反応して光学的に検出可能な変化を生じる試薬組成物の少なくとも一部が親水性ポリマーバインダー中に実質的に一様に分散されている吸水性で水浸透性の層である。この試薬層には指示薬層、発色層なども含まれる。
例えば、アンモニア(被験物質がアンモニア又はアンモニア生成物質である場合)を分析する場合には、呈色性アンモニア指示薬として、ロイコシアニン染料、ニトロ置換ロイコ染料およびロイコフタレイン染料のようなロイコ染料(米国再発行特許第30267号明細書または特公昭58−19062号公報記載):ブロムフェノールブルー、ブロムクレゾールグリーン、ブロムチモールブルー、キノリンブルーおよびロゾール酸のようなpH指示薬(共立出版(株)、化学大辞典、第10巻63〜65頁参照):トリアリールメタン系染料前駆体: ロイコベンジリデン色素(特開昭55−379号および特開昭56−145273号各公報に記載):ジアゾニウム塩とアゾ染料カプラー:塩基漂白可能染料等を用いることができる。バインダーの重量に対する呈色性アンモニア指示薬の配合量は約1〜20重量%の範囲内であることが好ましい。
前記試薬層の上に必要に応じて光遮蔽層を設けることができる。光遮蔽層は、光吸収性または光反射性(これらを合わせて光遮蔽性という。)を有する微粒子が少量の被膜形成能を有する親水性ポリマーバインダーに分散保持されている水透過性または水浸透性の層である。光遮蔽層は試薬層にて発生した検出可能な変化(色変化、発色等)を光透過性を有する支持体側から反射測光する際に、後述する展開層に点着供給された水性液体の色、特に試料が全血である場合のヘモグロビンの赤色等、を遮蔽するとともに光反射層または背景層としても機能する。
本発明の乾式多層分析要素には、支持体と試薬層の間に吸水層を設けることができる。吸水層は水を吸収して膨潤する親水性ポリマーを主成分とする層で、吸水層の界面に到達または浸透した水性液体試料の水を吸収できる層であり、全血試料を用いる場合には水性液体成分である血漿の試薬層への浸透を促進する作用を有する。吸水層に用いられる親水性ポリマーは前述の試薬層に使用されるもののなかから選択することができる。吸水層には一般的にはゼラチンまたはゼラチン誘導体、ポリアクリルアミド、ポリビニルアルコール、特に前述のゼラチン又は脱イオンゼラチンが好ましく、試薬層と同じ前述のゼラチンが最も好ましい。吸水層の乾燥時の厚さは約3μmから約100μm、好ましくは約5μmから約30μmの範囲、被覆量では約3g/m2から約100g/m2、好ましくは約5g/m2から約30g/m2の範囲である。吸水層には後述するpH緩衝剤、公知の塩基性ポリマー等を含有させて使用時(分析操作実施時)のpHを調節することができる。さらに吸水層には公知の媒染剤、ポリマー媒染剤等を含有させることができる。
検出層は、一般に、被検成分の存在下で生成した色素等が拡散し、光透過性支持体を通して光学的に検出され得る層で、親水性ポリマーにより構成することができる。媒染剤、例えばアニオン性色素に対してカチオン性ポリマーを、含んでもよい。吸水層は、一般に、被検成分の存在下で生成する色素が実質的に拡散しないような層を言い、この点で検出層とは区別される。
以下の実施例により本発明をさらに具体的に説明するが、本発明は実施例によって限定されるものではない。
ゼラチン下塗りされている180μmのポリエチレンテレフタレ−ト無色透明平滑フィルムに下記組成の水溶液(pH=7.0)を、乾燥後の厚さが14μmになるように塗布し、乾燥した。
界面活性剤 11.63 g/m2
ゼラチン 16.34 g/m2
ホウ酸 0.03 g/m2
塩化カリウム 0.03 g/m2
ロイコ色素 0.31 g/m2
ウリカーゼ 0.59 KU/m2
ペルオキシダーゼ 15.09 KU/m2
界面活性剤 0.17 g/m2
ポリビニルアルコール 0.75 g/m2
ヒドロキシプロピルセルロース 3.9 g/m2
ホウ酸 0.46 g/m2
塩化カリウム 0.40 g/m2
界面活性剤 0.62 g/m2
ここで、界面活性剤は、ポリオキシ(2−ヒドロキシ)プロピレンノニルフェニルエーテル(Surfactant 10G、オーリン社製)を用いた。
上記の一体型多層分析要素を12mm×13mm四方のチップに切断し、スライド枠(特開昭57−63452号公報に記載)に収めて、尿酸分析用乾式分析要素を作製した。
下層は実施例と全く同一の処方であり、次に水溶性高分子を塗布する代わりに下記組成のエタノール溶液を塗布・乾燥し、巻き取る直前にポリスルフォン膜(HS2000「富士写真フィルム社製」)を貼り付けた。
ポリビニルメチルエーテル 2.6g/m2
ヒドロキシプロピルセルロース 3.9 g/m2
ホウ酸 0.46 g/m2
塩化カリウム 0.40 g/m2
界面活性剤 0.62 g/m2
下層は実施例1と全く同一の処方であり、次に多孔膜をラミネートする際に約30g/m2の供給量で水を全面に供給して湿潤させた後、ポリスルフォン多孔膜HS200(「富士写真フィルム社」製)をラミネートした。
上記の多孔膜上に実施例1と同様の下記組成の水溶液(pH=9.5)を、塗布・乾燥した。
ヒドロキシプロピルセルロース 3.9 g/m2
ホウ酸 0.46 g/m2
塩化カリウム 0.40 g/m2
界面活性剤 0.62 g/m2
下層は実施例1と全く同一の処方であり、次に多孔膜をラミネートする前に下記水溶液(pH=9.5)を、下記組成になるように塗布・乾燥した。
ヒドロキシプロピルセルロース 3.9 g/m2
ホウ酸 0.46 g/m2
塩化カリウム 0.40 g/m2
界面活性剤 0.62 g/m2
界面活性剤 0.17 g/m2
ポリビニルアルコール 0.75 g/m2
下層は実施例1と全く同一の処方であり、次に多孔膜をラミネートする前に下記水溶液(pH=9.5)を、下記組成になるように塗布・乾燥した。
ヒドロキシプロピルセルロース 3.9 g/m2
ホウ酸 0.46 g/m2
塩化カリウム 0.40 g/m2
界面活性剤 0.62 g/m2
ポリビニルメチルエーテル 2.6g/m2
実施例1及び2と比較例1〜3に示した方法で作製した乾式分析素子について、同時再現性について測定を行った。
検体として、ヒトプール血清を用いて、前記分析素子10μL点着を10回繰り返して測定した。測定は、富士写真フィルム社製FDC5000を用いて行い、点着後4分の反射ODより、予め内蔵された検量線をもとに読み換えて測定値とした。表1には、UA=5.5mg/dLの濃度の検体をN=10点着時のCV値を示した。
Claims (7)
- 水不透過性平面支持体の片面上に、少なくとも1つの機能層を設け、該機能層の上面に接着層を設け、該接着層の上面に少なくとも1つの非繊維性多孔膜からなる多孔性液体試料展開層を設け、該多孔性液体試料展開層の上面に水溶性ポリマーを塗布することを含む、液体試料分析用乾式多層分析要素の製造方法。
- 機能層の上面に水溶性ポリマー溶液を塗布して接着層を設けながら、該接着層の上面に非繊維性多孔膜をラミネートすることにより多孔性液体試料展開層を設ける、請求項1に記載の製造方法。
- 機能層の上面に接着剤を塗布して接着層を設けた後に、該接着層の上面に非繊維性多孔膜をラミネートすることにより多孔性液体試料展開層を設ける、請求項1に記載の製造方法。
- 非繊維性多孔膜が、6,6−ナイロン、6−ナイロン、アクリレート共重合体、ポリアクリレート、ポリアクリロニトリル、ポリアクリロニトリル共重合体、ポリアミド、ポリイミド、ポリアミドイミド、ポリウレタン、ポリエーテルスルホン、ポリスルホン、ポリエーテルスルホンとポリスルホンの混合物、セルロースアシレート、セルロースアシレートの鹸化物、ポリエステル、ポリエステルカーボネート、ポリエチレン、ポリエチレンクロロトリフルオロエチレン共重合体、ポリエチレンテトラフルオロエチレン共重合体、ポリ塩化ビニル、ポリオレフィン、ポリカーボネート、ポリテトラフルオロエチレン、ポリビニリデンジフルオライド、ポリフェニレンスルフィド、ポリフェニレンオキシド、ポリフルオロカーボネート、ポリプロピレン、ポリベンズイミダゾール、ポリメタクリル酸メチル、スチレン−アクリロニトリル共重合体、スチレン−ブタジエン共重合体、エチレン−酢酸ビニル共重合体の鹸化物、ポリビニルアルコール、またはこれらの混合物である、請求項1から3の何れかに記載の製造方法。
- 非繊維性多孔膜がポリスルホン、ポリエーテルスルホン、セルロースアシレート、6,6−ナイロン、又は6−ナイロンである、請求項1から4の何れかに記載の製造方法。
- 非繊維性多孔膜が非対称性膜である、請求項1から5の何れかに記載の製造方法。
- 請求項1から6の何れかに記載の製造方法により製造される、水不透過性平面支持体の片面上に、少なくとも1つの機能層、接着層、少なくとも1つの非繊維性多孔膜からなる多孔性液体試料展開層、及び水溶性ポリマー層がこの順に積層一体化された液体試料分析用乾式多層分析要素。
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JP2006537804A JP4842828B2 (ja) | 2004-09-30 | 2005-09-29 | 多層分析要素の製造方法 |
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JP2004286970 | 2004-09-30 | ||
JP2004286970 | 2004-09-30 | ||
PCT/JP2005/017955 WO2006035875A1 (ja) | 2004-09-30 | 2005-09-29 | 多層分析要素の製造方法 |
JP2006537804A JP4842828B2 (ja) | 2004-09-30 | 2005-09-29 | 多層分析要素の製造方法 |
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JP4842828B2 JP4842828B2 (ja) | 2011-12-21 |
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US (1) | US20080026226A1 (ja) |
EP (1) | EP1795891B1 (ja) |
JP (1) | JP4842828B2 (ja) |
AT (1) | ATE554383T1 (ja) |
WO (1) | WO2006035875A1 (ja) |
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US8252225B2 (en) * | 2009-03-04 | 2012-08-28 | Baker Hughes Incorporated | Methods of forming erosion-resistant composites, methods of using the same, and earth-boring tools utilizing the same in internal passageways |
DE102009036217A1 (de) | 2009-08-05 | 2011-02-10 | Sartorius Stedim Biotech Gmbh | Optischer Sensor mit gegenüber dem zu vermessendem Medium löslicher Schicht und Vorrichtung damit sowie Verfahren zu ihrer Herstellung |
EP2495333A1 (de) | 2011-03-03 | 2012-09-05 | Roche Diagnostics GmbH | Verfahren zum Herstellen eines Testelements zur Untersuchung einer Körperflüssigkeitsprobe und Testelement |
Citations (10)
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EP0254202A1 (en) * | 1986-07-15 | 1988-01-27 | Fuji Photo Film Co., Ltd. | Method of preparing integral multilayer analytical element |
US5063153A (en) * | 1986-10-09 | 1991-11-05 | Fuji Photo Film Co., Ltd. | Integral multilayer analytical element |
JPH0526875A (ja) * | 1991-07-24 | 1993-02-02 | Fuji Photo Film Co Ltd | 一体型多層分析要素 |
JPH05273207A (ja) * | 1992-03-25 | 1993-10-22 | Fuji Photo Film Co Ltd | 全血分析要素及びそれを用いた測定方法 |
JPH0713635B2 (ja) * | 1986-07-15 | 1995-02-15 | 富士写真フイルム株式会社 | カルシウム分析用一体型多層分析要素の製造法 |
JPH0726959B2 (ja) * | 1988-01-20 | 1995-03-29 | 富士写真フイルム株式会社 | 全血分析要素 |
JPH08220089A (ja) * | 1995-02-10 | 1996-08-30 | Kdk Corp | ヘマトクリット値測定方法及び試験具 |
JP2618727B2 (ja) * | 1990-01-19 | 1997-06-11 | 富士写真フイルム株式会社 | 全血中の被検成分の定量方法 |
JP2665640B2 (ja) * | 1991-07-22 | 1997-10-22 | 富士写真フイルム株式会社 | 乾式分析要素を用いた測定方法及び乾式分析要素 |
JPH1084991A (ja) * | 1996-09-11 | 1998-04-07 | Kdk Corp | 試験片 |
-
2005
- 2005-09-29 EP EP20050787571 patent/EP1795891B1/en active Active
- 2005-09-29 US US11/664,271 patent/US20080026226A1/en not_active Abandoned
- 2005-09-29 AT AT05787571T patent/ATE554383T1/de active
- 2005-09-29 JP JP2006537804A patent/JP4842828B2/ja not_active Expired - Fee Related
- 2005-09-29 WO PCT/JP2005/017955 patent/WO2006035875A1/ja active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0254202A1 (en) * | 1986-07-15 | 1988-01-27 | Fuji Photo Film Co., Ltd. | Method of preparing integral multilayer analytical element |
JPH0713635B2 (ja) * | 1986-07-15 | 1995-02-15 | 富士写真フイルム株式会社 | カルシウム分析用一体型多層分析要素の製造法 |
US5063153A (en) * | 1986-10-09 | 1991-11-05 | Fuji Photo Film Co., Ltd. | Integral multilayer analytical element |
JPH0726959B2 (ja) * | 1988-01-20 | 1995-03-29 | 富士写真フイルム株式会社 | 全血分析要素 |
JP2618727B2 (ja) * | 1990-01-19 | 1997-06-11 | 富士写真フイルム株式会社 | 全血中の被検成分の定量方法 |
JP2665640B2 (ja) * | 1991-07-22 | 1997-10-22 | 富士写真フイルム株式会社 | 乾式分析要素を用いた測定方法及び乾式分析要素 |
JPH0526875A (ja) * | 1991-07-24 | 1993-02-02 | Fuji Photo Film Co Ltd | 一体型多層分析要素 |
JPH05273207A (ja) * | 1992-03-25 | 1993-10-22 | Fuji Photo Film Co Ltd | 全血分析要素及びそれを用いた測定方法 |
JPH08220089A (ja) * | 1995-02-10 | 1996-08-30 | Kdk Corp | ヘマトクリット値測定方法及び試験具 |
JPH1084991A (ja) * | 1996-09-11 | 1998-04-07 | Kdk Corp | 試験片 |
Also Published As
Publication number | Publication date |
---|---|
EP1795891A4 (en) | 2010-09-29 |
US20080026226A1 (en) | 2008-01-31 |
EP1795891B1 (en) | 2012-04-18 |
WO2006035875A1 (ja) | 2006-04-06 |
ATE554383T1 (de) | 2012-05-15 |
JP4842828B2 (ja) | 2011-12-21 |
EP1795891A1 (en) | 2007-06-13 |
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