WO2006030579A1 - 液体試料分析用多層分析素子 - Google Patents
液体試料分析用多層分析素子 Download PDFInfo
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- WO2006030579A1 WO2006030579A1 PCT/JP2005/012782 JP2005012782W WO2006030579A1 WO 2006030579 A1 WO2006030579 A1 WO 2006030579A1 JP 2005012782 W JP2005012782 W JP 2005012782W WO 2006030579 A1 WO2006030579 A1 WO 2006030579A1
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- layer
- ammonia
- polymer
- liquid sample
- analytical element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
- G01N33/525—Multi-layer analytical elements
Definitions
- the present invention relates to a multilayer analytical element for liquid sample analysis. Specifically, for example, a liquid for analyzing ammonia or ammonia product substances such as creatinine and urea in a liquid sample such as blood and urine.
- the present invention relates to a multilayer analysis element for sample analysis.
- a typical example is a selectively permeable layer that includes a reagent layer containing urease and an alkaline buffer, and an indicator layer that detects gaseous ammonia, and selectively allows only gaseous ammonia to permeate between them.
- It uses an integrated multi-layer analytical element that is integrated between the two.
- Patent Document 1 Japanese Patent Laid-Open No. 52-3488
- a thin hydrophobic polymer layer is used as a selective permeation layer for ammonia gas.
- Patent Document 2 Japanese Patent Application Laid-Open No. 58-77661 contains an indicator layer for gaseous ammonia, a liquid blocking layer, and an alkaline buffer on a transparent support, and reacts with a substrate as necessary to react with an amine.
- the liquid blocking layer is porous.
- Integrated multi-layer analysis for analysis of ammonia or ammonia-producing substrate in liquid samples which is characterized by the formation of air holes that are composed of active substances and that substantially block the liquid sample and allow gaseous ammonia to permeate under operating conditions.
- a material is disclosed.
- an integrated multilayer analysis element is disclosed in which a membrane filter is used as a selective transmission layer to improve adhesion to the indicator layer and to achieve high sensitivity.
- Patent Document 3 Japanese Patent Application Laid-Open No. 4-157363 discloses a polyvinyl alkyl ether or the like substantially free of ammonia and ammonium ions in an undercoat layer of a support. Integrated polylayer for analysis of ammonia or ammonia-generating substances with high measurement accuracy with low color development optical density with higher color development optical density, using polybulu alkyl ether as binder for indicator layer or indicator layer An analytical element is disclosed.
- Patent Document 4 Japanese Patent Laid-Open No.
- Patent Document 5 Japanese Patent Laid-Open No. 2002-122585 discloses an indicator layer containing an indicator that causes a change detectable by gaseous ammonia on a transparent support, and a liquid blocking layer that allows gaseous ammonia to pass therethrough.
- a reagent layer containing an alkaline buffer and having a reagent capable of reacting with a substrate to produce ammonia if necessary, and an analytical element in which a spreading layer is integrally bonded and laminated in this order, the liquid blocking layer is disclosed.
- Patent Document 1 JP-A 52-3488
- Patent Document 2 JP-A-58-77661
- Patent Document 3 Japanese Patent Laid-Open No. 4-157363
- Patent Document 4 Japanese Patent Laid-Open No. 4-157364
- Patent Document 5 Japanese Patent Laid-Open No. 2002-122585
- the integrated multilayer analytical element for analyzing ammonia or ammonia-generating substances disclosed in Patent Documents 2 to 5 has an indicator that produces a change detectable by gaseous ammonia on a transparent support.
- An indicator layer (detection layer) containing, a liquid blocking layer that allows gaseous ammonia to pass through, an ammonia generation reaction reagent layer, and a development layer are integrally bonded and laminated in this order, and an overfill containing a bull polymer is provided on the development layer as necessary.
- a coat layer is laminated.
- an ammonia diffusion prevention layer and an endogenous ammonia supplement layer are laminated between the ammonia generation reaction reagent layer and the spreading layer.
- the component contained in the detection layer oozes up to the liquid blocking layer, which is a porous film, and between the transparent support and the detection layer.
- the adhesive strength was reduced, and peeling occurred due to handling during processing, so that productivity did not increase.
- an object of the present invention is to analyze a liquid sample in which the adhesion between the transparent support and the detection layer is improved by handling during processing while maintaining basic performance such as sensitivity and storage performance. It is intended to provide a multilayer analytical element.
- a detection layer containing a substance that causes a change detectable by the gaseous substance, a liquid blocking layer that selectively permeates the gaseous substance, and a spreading layer are arranged in this order.
- the multilayer analytical element for liquid sample analysis of the present invention is characterized in that an adhesive polymer and a water-insoluble bull polymer are contained in a detection layer containing a substance that causes a change that can be detected by a gaseous substance.
- a substance that causes a change that can be detected by a gaseous substance is a structure that changes as a result of reaction or interaction with the gaseous substance, and the spectroscopic characteristics such as an absorption wavelength. It means a substance that causes a change.
- the change in structure includes a chemical structure, for example, a change in atomic composition, a bond relationship such as a covalent bond and a hydrogen bond, a change in steric structure, and the like.
- the multilayer analytical element for liquid sample analysis of the present invention is transparent as long as at least a detection layer, a liquid blocking layer, and a development layer are integrally bonded and laminated in this order on a transparent support.
- One or more layers can be provided at a position selected from at least one of the forces on the support detection layer, detection layer, liquid blocking layer, liquid blocking layer, one developing layer, and developing layer.
- the multilayer analytical element for liquid sample analysis of the present invention includes an adhesive polymer in the detection layer.
- This adhesive polymer is a polymer that contributes to the adhesion of each interface between the transparent support detection layer and the detection layer / liquid blocking layer.
- the adhesive polymer used in the present invention preferably has a Tg of 0 ° C or less (more preferably from 1 to 150 ° C, particularly preferably from -100 to -10 ° C).
- the adhesive polymer preferably has a mass average molecular weight of 10,000 to 1,000,000 (more preferably 10,000 to 500,000, particularly preferably 20,000 to 200,000).
- Examples of the adhesive polymer include polyvinyl alkyl ethers (for example, polyvinyl methyl ether, polybutyl ether, polybutyl isobutyl ether, etc.), natural rubber, black-prene, styrene butadiene rubber, carbon number 2 to : 16 aliphatic alcohol attalinole ester as the main component, a polymer obtained by copolymerizing a small amount of monomers with polar groups such as acrylic acid and acrylamide, silicone composed of a combination of silicone rubber and silicone resin Adhesives based on styrene, isoprene, styrene block polymer, rosin resin, terpene resin, hydrogenated petroleum resin, polyisobutylene, indene, dammar, copal, coumarone, picopale, alkyd resin, cell Low ester, neo Ren and the like. Among them, polybulualkyl ether is preferable.
- the amount of adhesive polymer added is:! To 500 times, preferably 3 to 300 times, more preferably 5 to 100 times the amount of indicator in the detection layer.
- the water-insoluble butyl polymer contained in the detection layer is required to be insoluble in water, but is preferably an adhesive polymer that is preferably soluble in the coating solvent for forming the detection layer. It is preferably compatible with other polymers that can be used.
- “insoluble in water” means that the solubility in 100 g of water at 20 ° C. is not more than lg.
- the coating solvent is generally an organic solvent or a mixed solvent of an organic solvent and water.
- the water-insoluble bull polymer is preferably soluble in alcohol, and particularly preferably ethanol-soluble.
- the water-insoluble vinyl polymer preferably has a Tg of 10 ° C or higher (more preferably 20 to 150 ° C, particularly preferably 30 to 120 ° C). Further, it is preferable that the water-insoluble vinyl polymer has an average polymerization degree of S30 to 5000 (more preferably 50 to 3000, particularly preferably 100 to 2500).
- the water-insoluble vinyl polymer preferably has an acetal group.
- acetal groups include petital groups, acetal groups, and formal groups.
- the water-insoluble polymer suitable for the present invention is a copolymer represented by the general formula (1).
- This copolymer consists of repeating units x, y and ⁇ , and y has an acetal group.
- X, y, z is a molar ratio representing an integer of 0 or more, and preferably x: y: z is (20 to 70): (20 to 90): (1 to: 10), more preferably (30-60): (30-80): (1-5).
- R represents an alkyl group. R may be linear or branched, and is preferably a linear alkyl group having 1 to 5 carbon atoms.
- the water-insoluble vinyl polymer is polyvinyl butyral.
- the polybutypetital means that in the above general formula (1), the scale of the y unit is a propyl group, and the y unit is 20 mol% or more.
- the addition amount of the water-insoluble bull polymer is:! To 50% by mass, preferably 1 to 30% by mass, and more preferably 1 to 20% by mass with respect to the adhesive polymer.
- a hydrophobic transparent support generally used in such an analytical element for example, a transparent support made of a polymer such as polyethylene terephthalate, polycarbonate, or a polyvinyl compound is used. .
- the thickness of the transparent support is 50 to about 1000 ⁇ m, usually about 80 to 300 ⁇ m.
- the detection layer includes at least a substance that causes a detectable change by ammonia as a gaseous substance, an adhesive polymer, and a water-insoluble vinyl polymer.
- color precursor a compound that reacts with gaseous ammonia to cause a change in absorption wavelength
- a color precursor a compound that reacts with gaseous ammonia to cause a change in absorption wavelength
- color precursors include leuco dyes such as leuco cyanine dyes, nitro-substituted leuco dyes, and leucophthalein dyes (JP-A-52-3488, US Pat. No. RE 30 267).
- PH indicators such as bromophenol blue, brom talesole green, bromothymol blue, quinoline blue and rosoleic acid (described in Kyoritsu Shuppan, Chemical Dictionary, pages 10-63-65); triarylmethane series Dye precursors; leucobenzylidene dyes (described in JP-A-56-145273); diazonium salts and azo dye couplers; base-bleachable dyes and the like.
- a detection layer can be formed.
- polymers other than those exemplified above can be used in combination as a binder polymer.
- Other binder polymers include acid-treated gelatin, alkali-treated gelatin, Gelatin such as deionized gelatin; senorelose ester such as senorelose acetate, senorelose acetate butyrate, senorelose acetate propionate; Anolequinolesenoreloses; etc. are used.
- the amount of the color precursor used is about 0.:! To about 50% by mass with respect to the mass of the adhesive polymer, the water-insoluble bull polymer and the other binder polymer (hereinafter sometimes simply referred to as the binder polymer). Preferably, about 0.5% by mass to 20% by mass is appropriate.
- pH can be adjusted by adding various buffering agents, organic acids, inorganic acids, etc. for the purpose of adjusting sensitivity.
- the buffering agent can be selected from the strengths described below.
- Organic acids and inorganic acids include ethanesulfonic acid, aspartic acid, azelaic acid, glutaric acid, succinic acid, glutaconic acid, tartaric acid, pimelic acid, malonic acid.
- the solvent used to form the coating solution is suitably an organic solvent such as acetone, 2-methoxyethanol, methylethylketone, methanol, ethanol, or a mixed solvent thereof.
- a solid, a binder polymer, etc. are added so that the solid content concentration is about 1 to 30% by mass, preferably about 3 to 20% by mass, to obtain a coating solution. This is coated on a transparent support and dried to form a detection layer so that the dry film thickness is about 30 to 30 ⁇ m, preferably 2 to 20 ⁇ m.
- a liquid blocking layer is provided on the detection layer.
- the liquid blocking layer is substantially free of liquids such as coating liquids and sample liquids and interference components dissolved in these liquids (eg, alkaline components) during the manufacture of multilayer analytical elements and during Z or analytical operations. It is preferably composed of a microporous material having a through-air hole that can selectively permeate a gaseous substance such as gaseous ammonia.
- the liquid blocking layer in the present invention is composed of one or more porous films.
- the pore diameter of the uppermost porous membrane in contact with the reagent layer described later is preferably the same as or smaller than the pore diameter of the porous membrane immediately below.
- the pore size of the uppermost porous membrane is 0.01-! / im, preferably 0.04 to 0.2 ⁇ m
- the pore diameter of the porous membrane immediately below Is 0.2 to 20 111, preferably 0.5 to 10 zm
- the ratio of the average pore diameter of the uppermost porous membrane to the pore diameter of the porous membrane immediately below is 0.001 to 1.0, preferably 0. 01 to 0.5.
- the pore diameter in this specification is an average pore diameter unless otherwise specified.
- the material of the porous membrane is not particularly limited, but examples thereof include fluorine-containing polymers such as polyethylene, polypropylene, and polytetrafluoroethylene, cellulose acetate, polysulfone, polyamide (nylons), and mixtures thereof. .
- Preferred is a combination of a polyethylene porous membrane and a polypropylene porous membrane.
- Each porous membrane has a thickness of 3 to 40 zm, preferably 5 to 20 ⁇ , and a liquid blocking layer is formed by combining two or more layers, usually 2 to 3 layers.
- the porosity of the entire liquid blocking layer is 25 to 90%, preferably 35% to 90, and the total layer thickness is 10 to 50 ⁇ m, preferably 10 to 30 ⁇ m.
- the liquid blocking layer adheres to the detection layer described above with practical strength.
- the detection layer surface may be attached in a wet state and dried.
- the wet state means that the solvent in which the Norder is dissolved remains or the dried membrane is wetted with the soluble solvent and the binder is in a swollen state, a dispersed state or a solution state.
- the adhesion between the porous films is performed by physical and / or chemical means such as point contact using an adhesive such as thermocompression bonding or hot melt. These may be laminated one after another, or may be bonded to the detection layer after first laminating the porous films.
- a reagent layer can be provided on the liquid blocking layer.
- the reagent layer includes, for example, a reagent that reacts with an ammonia-generating substance to generate ammonia (generally, an enzyme or a reagent containing an enzyme), an alkaline buffer for efficiently releasing ammonia generated by the reaction as gaseous ammonia, and This layer usually contains a hydrophilic polymer binder having film-forming ability.
- urea Z urease creatine Z creatine diminase, amino acid / amino acid dehydrogenase, amino acid z amino acid oxidase, amino acid / amino acid dehydratase, amino acid / ammonia Lyase, ammine Z amine monooxidase, diamine Z amine monooxidase, glucose and phosphoramidate Z phosphoramidate hexose phosphoryl transferase, ADPZ strength rubamate kinase and phosphate strength rubamol, acid amide Z amidohydrolase, nucleobase / deaminase, Nucleoside / deaminase, nucleoti De Z deaminase, guanine / guanase and the like.
- a buffer having a pH in the range of 7.0 to 10.5, preferably 7.5 to 10.0 can be used.
- the buffer include ethylenediamine tetraacetic acid (EDTA), tris (hydroxymethyl) aminomethane (Tris), phosphate buffer, N, N-bis (2-hydroxyethyl) glycine (Bicine), N-2 -Good buffer such as hydroxyethyl biperazine 1-N, 1-hydroxypropane 1-sulfonic acid (HEPPS), N-hydroxyethylpiperazine _N, monoethanesulfonic acid (HEPES), borate buffer, etc. be able to.
- EDTA ethylenediamine tetraacetic acid
- Tris tris (hydroxymethyl) aminomethane
- phosphate buffer N, N-bis (2-hydroxyethyl) glycine (Bicine)
- Na-2 -Good buffer such as hydroxyethyl biperazine 1-N, 1-hydroxypropane
- hydrophilic polymer binder having a film-forming ability examples include gelatin, agarose, polybutyl alcohol, polyacrylolamide, hydroxymethylcellulose, hydroxyethylcellulose, and polyvinylpyrrolidone. Can be mentioned.
- the reagent layer includes a reagent that reacts with an ammonia-generating substance to generate ammonia, an alkaline buffer that efficiently releases ammonia generated by the reaction as gaseous ammonia, and a hydrophilic that has film-forming ability.
- a wetting agent, a binder cross-linking agent (curing agent), a stabilizer, a heavy metal ion trapping agent (complexing agent) and the like can be included as necessary.
- the reagent layer comprises a reagent that reacts with an ammonia-generating substrate to generate ammonia, an alkaline buffer, and the reagents that are added as necessary, and a hydrophilic polymer binder such as gelatin having film-forming ability. It can be formed into a coating solution by mixing, coating and drying on the liquid barrier layer.
- the amount of the reagent that reacts with the ammonia-generating substrate contained in the reagent layer to generate ammonia is usually about 0.1 to about 50% by mass, preferably about 0.2 to about 20%, based on the mass of the binder. It is within the range of%.
- the amount of alkaline buffer is in the range of about 0.1 to about 60 weight percent based on the weight of the binder.
- the dry film thickness of this reagent layer is usually in the range of about 1 to about 40 x m, preferably about 2 to about 20 z m.
- a development layer is provided on the reagent layer.
- JP-A-55-164356 (corresponding US Pat. No. 4,292,272), JP-A-57-66359 (corresponding US Pat. 3 315) etc. (for example, flat knitted fabrics such as broad and poplin), knitted fabric development layers described in JP 60-222769 (corresponding EP Patent 0 162 302A), etc.
- tricot knitted fabric double tricot knitted fabric, Miranese knitted fabric
- organic polymer fiber pulp-containing papermaking paper development layer described in JP-A-57-148250 fiber described in JP-A-57-125847, etc.
- a fibrous microporous development layer such as a development layer formed by applying a dispersion of a polymer and a hydrophilic polymer; a membrane filter layer (brush) described in JP-B-53-21677 (corresponding to US Pat. No. 3,992,158) Polymer layer), isotropic microporous development layer containing continuous micropores in which fine particles such as polymer microbeads are adhered in a point contact manner with a hydrophilic polymer binder, Japanese Patent Application Laid-Open No. 55-90859 (Patent 4 258 001) etc.
- Isotropic microporous layer (three-dimensional lattice-like granular structure layer) containing layered micropores formed by adhering microbeads in a point contact with a polymer adhesive that does not swell with water.
- Microporous spreading layer JP-A 61-4959 (corresponding US Pat. No. 5,019,347), JP-A 62-138756, JP-A 62-138757, JP-A 62-138758 (corresponding EP patent 0 226 465A)
- a plurality of microporous layers eg, two layers of woven fabric or knitted fabric and membrane filter, three layers of woven fabric or knitted fabric and membrane filter and woven fabric or knitted fabric described in each of the above publications, etc.
- There is a spread layer with excellent blood cell separation ability that is laminated and adhered with a fine discontinuous or island-like (dot-like in the printing field) adhesive.
- the fabric or knitted fabric used for the spreading layer is subjected to physical activation treatment represented by Glow discharge treatment or corona discharge treatment described in JP-A-57-66359 on at least one side of the fabric fabric. Or water washing degreasing treatment described in JP-A-55-164356, JP-A-57-66359, etc., hydrophilization treatment such as impregnation with a hydrophilic polymer, or a combination of these treatment steps as appropriate.
- the fabric can be made hydrophilic and the adhesive strength with the lower layer (side closer to the support) can be increased.
- a polymer-containing aqueous solution or a polymer-containing water-organic solvent mixture is formed from above the spreading layer.
- the development area or spread of the liquid sample can be controlled by applying a solution.
- the ammonia diffusion prevention layer and the endogenous ammonia supplementation layer are described in, for example, JP-A-4-157364, etc., and a known force such as the ammonia diffusion prevention layer is substantially subjected to ammonia supplementation and ammonia generation reaction.
- This layer is not a layer and can be formed using a hydrophilic polymer such as hydroxypropylcellulose.
- the thickness of the ammonia diffusion preventing layer is, for example, 2 to 50 zm.
- the endogenous ammonia capture layer is a layer containing a reagent that acts on endogenous ammonia already present in the liquid sample to change it to a state where it cannot substantially reach the reagent layer.
- the reagent include a composition containing an enzyme having a catalytic ability to change an ammonia to a substrate to another substance.
- a specific example of the composition is a composition containing ⁇ -ketoglutarate, NADPH, and glutamate dehydrogenase using a hydrophilic polymer such as hydroxyethyl cellulose as a binder polymer.
- the thickness of the endogenous ammonia supplemental layer is, for example:! -30 / im.
- a color shielding layer or a light reflecting layer can be provided between the reagent layer and the spreading layer.
- the color shielding layer or the light reflecting layer is formed by dispersing white particles such as titanium dioxide fine particles and barium sulfate fine particles having light shielding properties or light shielding properties and light reflecting properties almost uniformly in a hydrophilic polymer binder such as gelatin. It is a layer with a thickness of about 2 / im force when dried and a range of about 20 ⁇ .
- a known adhesive layer made of a hydrophilic polymer is provided on the reagent layer, the ammonia diffusion preventing layer, the endogenous ammonia supplementing layer, the color shielding layer, or the light reflecting layer for the purpose of firmly bonding and integrating the spreading layer.
- the dry thickness of the adhesive layer is in the range of about 0.5 111 to about 5 m.
- a surfactant can be contained in the reagent layer, the ammonia diffusion preventing layer, the endogenous ammonia supplementing layer, the color shielding layer or the light reflecting layer, the adhesive layer, the spreading layer, and the like.
- An example is a nonionic surfactant.
- Specific examples of nonionic surfactants include p-octylphenoxypolyethoxyethanol, p-nonylphenoloxypolyethoxyethanol, polyoxyethylene oleyl ether, polyoxyethylene sorbitan monolaurate, p-nonolephenol. Cypolyglycidol, octyldarcoside and the like.
- aqueous liquid samples such as blood, plasma, serum, urine, etc. 1-: Incubate at a substantially constant temperature in the range of about 20-40 ° C for 10 minutes, then clear The degree of color change (coloring or fading) of the detection layer from the support side may be reflected photometrically or visually compared with the standard color.
- the detection layer On the transparent polyethylene terephthalate (PET) film having a thickness of 180 x m, the detection layer was applied with an ethanol solution and dried so as to have the following coating amount.
- PET polyethylene terephthalate
- a polyethylene membrane filter having an average pore size of 0.2 ⁇ m, a porosity of 75%, and a thickness of 100 ⁇ was uniformly pressed on the detection layer to provide a liquid blocking layer.
- the reagent layer was applied from an aqueous solution and dried so as to have the following coating amount.
- Reagent layer ( ⁇ 9 ⁇ 0)
- ammonia diffusion preventing layer was applied on the reagent layer so as to have the following coating amount and dried.
- Hydroxypropylcellulose 20 Og / m 2
- an endogenous ammonia supplemental layer was applied on the ammonia diffusion preventing layer so as to have the following coating amount and dried.
- the endogenous ammonia supplement layer was moistened almost uniformly with a 0.2% P-noyulphenoxypolyglycidol aqueous solution, and a polyester knitted fabric (gauge number 40) was immediately crimped uniformly. Furthermore, in order to improve the spreadability, this laminate was impregnated with polybulol pyrrolidone in ethanol so that the following coating amount was applied, dried, slitted to a width of 12 mm, and an integrated multilayer analytical element for Creatun quantitative analysis. Prepared.
- the peeling force between the support transparent PET film and the detection layer was measured.
- the peel force is a value measured by the following method.
- Peeling force measurement method TENSILON UT M-II-20 manufactured by Orientec Co., Ltd. is used as a peeling force measuring device. Cut the sample into strips with a width of 12 mm and a length of 150 mm, and attach the PET film surface to the frame with double-sided tape. Manually peel off the PET film from the sensing layer, clip the peeled sensing layer with a clip, connect to the measuring device, and start measurement. The peel force is recorded on the graph as a recorder, and the peel force can be read from the graph.
- Sensitivity was determined by placing a 10 ⁇ 1 point solution containing creatinine at a rate of 12.7 mg / dl on the spreading layer and measuring the color optical density (OD) after 5 minutes at a measurement wavelength of 650 nm. Shown as a relative value.
- X greater than ⁇ 5%.
- the analytical element of Example 1 has a peeling force about 15 times that of a conventional analytical element (Comparative Example 1) that does not use a water-insoluble bull polymer, and the force does not decrease in sensitivity. It can be seen that the existing performance is also good.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05757806A EP1790982B1 (en) | 2004-09-17 | 2005-07-11 | Multilayer analysis element |
US11/661,786 US8852515B2 (en) | 2004-09-17 | 2005-07-11 | Multilayer analysis element for analyzing liquid samples |
AT05757806T ATE526579T1 (de) | 2004-09-17 | 2005-07-11 | Mehrschichtiges analytisches element |
CN2005800313096A CN101052874B (zh) | 2004-09-17 | 2005-07-11 | 用于分析液体样品的多层分析元件 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-271352 | 2004-09-17 | ||
JP2004271352A JP4505296B2 (ja) | 2004-09-17 | 2004-09-17 | 液体試料分析用多層分析素子 |
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WO2006030579A1 true WO2006030579A1 (ja) | 2006-03-23 |
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PCT/JP2005/012782 WO2006030579A1 (ja) | 2004-09-17 | 2005-07-11 | 液体試料分析用多層分析素子 |
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EP (1) | EP1790982B1 (ja) |
JP (1) | JP4505296B2 (ja) |
CN (1) | CN101052874B (ja) |
AT (1) | ATE526579T1 (ja) |
WO (1) | WO2006030579A1 (ja) |
Cited By (2)
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CN106645675A (zh) * | 2017-01-03 | 2017-05-10 | 长沙中生众捷生物技术有限公司 | 尿素氮的检测试剂及尿素氮的检测试纸 |
US10293340B2 (en) | 2017-10-11 | 2019-05-21 | Fitbit, Inc. | Microfluidic metering and delivery system |
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FR2954911A1 (fr) * | 2010-01-04 | 2011-07-08 | Commissariat Energie Atomique | Procede de detection d'un analyte dans un fluide corporel |
ES2969886T3 (es) * | 2018-01-12 | 2024-05-23 | Mayo Found Medical Education & Res | Sistemas y métodos para la detección y cuantificación de amoníaco y amonio en fluidos |
CN109916895A (zh) * | 2019-04-12 | 2019-06-21 | 吉林省汇酉生物技术股份有限公司 | 一种定量测定肌酐浓度的干化学试剂片及其制备方法 |
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JPH06222050A (ja) * | 1993-01-22 | 1994-08-12 | Nippon Kayaku Co Ltd | 酸素検知紙 |
JP2002122585A (ja) * | 2000-10-16 | 2002-04-26 | Fuji Photo Film Co Ltd | アンモニア又はアンモニア生成物質分析用一体型多層分析素子 |
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RU94044169A (ru) * | 1994-12-16 | 1996-10-20 | И.А. Кочетов | Многослойный аналитический элемент |
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2004
- 2004-09-17 JP JP2004271352A patent/JP4505296B2/ja not_active Expired - Fee Related
-
2005
- 2005-07-11 CN CN2005800313096A patent/CN101052874B/zh not_active Expired - Fee Related
- 2005-07-11 AT AT05757806T patent/ATE526579T1/de not_active IP Right Cessation
- 2005-07-11 WO PCT/JP2005/012782 patent/WO2006030579A1/ja active Application Filing
- 2005-07-11 EP EP05757806A patent/EP1790982B1/en not_active Not-in-force
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06222050A (ja) * | 1993-01-22 | 1994-08-12 | Nippon Kayaku Co Ltd | 酸素検知紙 |
JP2002122585A (ja) * | 2000-10-16 | 2002-04-26 | Fuji Photo Film Co Ltd | アンモニア又はアンモニア生成物質分析用一体型多層分析素子 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106645675A (zh) * | 2017-01-03 | 2017-05-10 | 长沙中生众捷生物技术有限公司 | 尿素氮的检测试剂及尿素氮的检测试纸 |
CN106645675B (zh) * | 2017-01-03 | 2019-03-15 | 长沙中生众捷生物技术有限公司 | 尿素氮的检测试剂及尿素氮的检测试纸 |
US10293340B2 (en) | 2017-10-11 | 2019-05-21 | Fitbit, Inc. | Microfluidic metering and delivery system |
US11020742B2 (en) | 2017-10-11 | 2021-06-01 | Fitbit, Inc. | Microfluidic metering and delivery system |
US11033899B2 (en) | 2017-10-11 | 2021-06-15 | Fitbit, Inc. | Microfluidic metering and delivery system |
US11052389B2 (en) | 2017-10-11 | 2021-07-06 | Fitbit, Inc. | Microfluidic metering and delivery system |
US11857960B2 (en) | 2017-10-11 | 2024-01-02 | Fitbit, Inc. | Microfluidic metering and delivery system |
Also Published As
Publication number | Publication date |
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EP1790982A4 (en) | 2010-08-25 |
CN101052874A (zh) | 2007-10-10 |
EP1790982B1 (en) | 2011-09-28 |
JP4505296B2 (ja) | 2010-07-21 |
ATE526579T1 (de) | 2011-10-15 |
EP1790982A1 (en) | 2007-05-30 |
CN101052874B (zh) | 2010-09-08 |
JP2006084398A (ja) | 2006-03-30 |
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