WO2010022543A1 - 流体检测试片 - Google Patents
流体检测试片 Download PDFInfo
- Publication number
- WO2010022543A1 WO2010022543A1 PCT/CN2008/001551 CN2008001551W WO2010022543A1 WO 2010022543 A1 WO2010022543 A1 WO 2010022543A1 CN 2008001551 W CN2008001551 W CN 2008001551W WO 2010022543 A1 WO2010022543 A1 WO 2010022543A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- nitrocellulose
- detecting test
- zone
- test piece
- Prior art date
Links
Classifications
-
- 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
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/536—Immunoassay; Biospecific binding assay; Materials therefor with immune complex formed in liquid phase
- G01N33/537—Immunoassay; Biospecific binding assay; Materials therefor with immune complex formed in liquid phase with separation of immune complex from unbound antigen or antibody
- G01N33/538—Immunoassay; Biospecific binding assay; Materials therefor with immune complex formed in liquid phase with separation of immune complex from unbound antigen or antibody by sorbent column, particles or resin strip, i.e. sorbent materials
-
- 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
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54386—Analytical elements
- G01N33/54387—Immunochromatographic test strips
- G01N33/54388—Immunochromatographic test strips based on lateral flow
Definitions
- the present invention relates to a test strip, and more particularly to a fluid test strip for use in biochemical assays and immunoassays. Background technique
- the fluid detecting test piece is designed with a flow path or a micro flow path structure and a surface hydrophobicity treatment on the substrate or the substrate, and the water around the flow path is not a water absorbing material.
- the fluid to be tested mostly contains a highly viscous composition such as protein or sugar, so when the fluid to be tested flows, it will remain on the flow path, so that the fluid to be tested cannot be completely reacted, so that not only The waste of the fluid to be tested is more likely to cause errors in the final test results.
- the fluid detecting test piece of the prior art can be designed with a micro flow path structure for fluid transfer, and is a capillary phenomenon generated by the micro flow path structure to passively transfer the fluid through the flow path to the reaction detection area;
- the driving force is given by means of pressurization or vacuum negative pressure, or one or more micro valves or valves are arranged in the flow channel, so that the fluid can be Actively and sequentially pass through the flow path to reach the reaction detection area.
- the fluid to be tested is often injected or entangled in the flow path to cause the flow path to block, causing an actual measurement error, or even causing the test to fail, and the micro-actuator Add or increase the overall design difficulty and test piece cost.
- test piece of the prior art is used for making a flow path or a micro flow path structure on the substrate by molding, injection molding or imprinting, so polyethylene (PE), poly must be used.
- PE polyethylene
- Higher-priced plastic polymers such as vinyl chloride (PVC) or polypropylene (PP) are used as materials and the molds are worn faster, which in turn leads to an increase in the overall cost of the test piece.
- a primary object of the present invention to provide a fluid detecting test piece which has a nitrocellulose layer which can absorb liquid, thereby avoiding liquid residue in the flow path.
- Another object of the present invention is to provide a fluid detecting test piece having a water absorbing nitrocellulose layer. Since the amount of liquid absorbed per unit volume of nitrocellulose is constant, the nitrocellulose layer can be set on the substrate. volume, Provide quantitative quantification of the fluid to be tested.
- the technical solution of the present invention is a fluid helium test piece, which mainly comprises a substrate, and the upper surface of the substrate is recessed downwardly with at least a first-class channel, and the flow channel comprises a first fluid region sequentially connected, The two fluid zone and the third fluid zone, the first fluid zone is for the injection of fluid.
- the fluid detecting test piece is characterized by having a nitrocellulose layer formed at the bottom of the second fluid zone and the third fluid zone, the nitrocellulose layer comprising a hollow network configuration, wherein the second fluid zone is for fluid transfer, The third fluid zone is a reaction for the fluid, and the average thickness of the nitrocellulose layer of the second fluid zone is no greater than the thickness of the nitrocellulose layer of the third fluid zone.
- the fluid detecting test piece also has a reactive material formed in a hollow network configuration of the nitrocellulose layer.
- the invention has the advantages of - having a liquid-absorbing nitrocellulose layer, avoiding liquid residue in the flow channel; and the amount of nitrocellulose absorbed per unit volume of the nitrocellulose layer is determined by setting the nitrocellulose layer on the substrate.
- the volume provides the quantitative detection of the fluid to be tested; the nitrocellulose layer with a hollow network configuration destroys the bubbles in the fluid, avoiding the occurrence of bubbles blocking the flow path in the microfluidic technology, and making the quantitative analysis result accurate.
- FIG. 1A is a schematic view showing a fluid detecting test piece according to a first embodiment of the present invention
- FIG. 1B is a schematic view showing a cross section of a fluid detecting test piece according to a first embodiment of the present invention
- FIG. 2A is a schematic view showing a fluid detecting test piece according to a second embodiment of the present invention.
- Fig. 2B is a schematic view showing a cross section of a fluid detecting test piece according to a second embodiment of the present invention.
- Main component symbol description is a schematic view showing a cross section of a fluid detecting test piece according to a second embodiment of the present invention.
- Second fluid zone 112, 212 Third fluid zone 113, 213
- the fluid detecting test piece 1 includes a substrate 10 and a support member 19.
- the substrate 10 is recessed downwardly from the upper surface 100.
- the flow path 11 includes a first fluid zone 111, a second fluid zone 112 and a third fluid zone 113 which are sequentially connected.
- the first fluid zone 111 is for the injection of fluid. After the fluid is injected into the first fluid zone 111, the fluid is transferred to the third fluid zone 113 via the second fluid zone 112, where the components to be tested are biochemically or immune response.
- substrate 1 is a biocompatible material.
- FIG. 1B is a cross-sectional view taken along line AA of Figure 1A.
- the nitrocellulose layers 1121 and 1131 having a hollow network configuration are formed at the bottoms of the second fluid region 112 and the third fluid region 113, and the reaction materials are contained in the hollow mesh configuration of the nitrocellulose layers 1121 and 1131.
- the composition of the reactive material is related to the type of the component to be tested contained in the fluid. Further, since the nitrocellulose layers 1121 and 1131 are porous hollow structures, the fluid flowing in from the first fluid region 111 can be absorbed, and the components to be tested in the fluid and the reaction materials present in the nitrocellulose layer 1131 can be absorbed. Carry out the reaction.
- nitrocellulose layers 1121 and 1131 are liquid-absorbable materials, fluids can be prevented from remaining in the flow path 11, and as the fluid flows through the hollow-mesh configuration of the nitrocellulose layers 1121 and 1131, the bubbles in the fluid It is destroyed, so that the air bubbles 11 can be prevented from being blocked by the air bubbles.
- the reactions required for the detection are also different; and depending on the type of reaction, various signals are generated.
- enzymes are used to catalyze the test substance in the fluid and cold.
- Photochemical reagents which in turn produce optical signals of a specific wavelength for detection. Therefore, for biochemical testing, the reaction material will contain enzymes and corresponding chemical reagents.
- to detect the presence of certain proteins eg, fetal protein, -fetoprotein
- the reagent reacts with an antibody that has been bound to the protein to be tested, and emits a signal for detection.
- the reaction material contains immunological reagents such as chemicals and antibodies. Therefore, the fluid detecting test piece provided by the present invention can be used for detecting various components to be tested in various biological samples (such as urine, blood, and the like).
- the average thickness Da of the nitrocellulose layer 1121 of the second fluid region 112 is not greater than the thickness Db of the nitrocellulose layer 1131 of the third fluid region 113, that is, Da is less than or equal to Db, as shown in FIG. 1B in this embodiment, nitrification
- the average thickness Da of the fibrous layer 1121 is smaller than the thickness Db of the nitrocellulose layer 1131 of the third fluid region 113.
- the widths Wa and Wb of the second fluid region 112 and the third fluid region 113 are preferably at least 0.3ram.
- the manner in which the nitrocellulose layers 1121 and 1131 are formed and the manner in which the reaction material is formed are as follows. First, a nitrocellulose powder is mixed with an organic solvent containing an ester and a ketone to form a nitrocellulose solution; and the nitrocellulose solution is cast in the second fluid region 112 and the first At the bottom of the three-fluid zone 113, after drying, a nitrocellulose layer 1121 is formed at the bottom of the second fluid zone 112, and a nitrocellulose layer 1131 is formed at the bottom of the third fluid zone 113.
- the surface roughness (Ra value) of the flow path 11 is preferably between 3 ⁇ m and 50 ⁇ m.
- a nitrocellulose layer having a hollow network configuration is formed.
- the nitrocellulose powder is mixed with an organic solvent containing an ester and a ketone.
- the preferred volume ratio is 1:9. Since the amount of liquid absorbed per unit volume of nitrocellulose is constant, the volume of the corresponding nitrocellulose solution can be derived from the volume of the fluid to be absorbed to be absorbed, and then cast. This makes it possible to fix the volume of the liquid required for detection and to be suitable for micro-testing.
- the reaction solution containing the reaction material is injected into the nitrocellulose layers 1121 and 1131, and air-dried or lyophilized. Thereafter, it remains in the form of a powder in the nitrocellulose layers 1121 and 1131.
- the manner in which the nitrocellulose layers 1121, 1131 and the reaction material are formed is formed by sequentially forming a nitrocellulose layer and then injecting the reaction material, and the reaction solution containing the reaction material may be added to the nitrocellulose powder.
- the nitrocellulose solution is formed into a nitrocellulose layer 1121 and 1131 by air drying or freeze drying, and the reaction material is powdered and left in the nitrocellulose layer 1121 and 1131.
- the first embodiment described above is a test strip having three fluid regions, and according to the spirit of the present invention, a fourth fluid region can be added to the flow channel for supply. Excess fluid in the flow path.
- a test piece having four fluid zones of the second embodiment of the present invention will be described below.
- FIG. 2A is a schematic diagram of a fluid detecting test piece according to a second embodiment of the present invention.
- the substrate 20 of the fluid detecting test strip 2 is recessed from the upper surface 200 with a flow path 21, and the flow path 21 includes a first fluid region 211, a second fluid region 212, a third fluid region 213, and a fourth region which are sequentially connected.
- the first fluid zone 211 is for the injection of a fluid. After the fluid is injected into the first fluid zone 211, the fluid is transferred to the third fluid zone 213 via the second fluid zone 212, where the components in the fluid undergo biochemical or immunological reactions. .
- FIG. 2B which is a cross-sectional view taken along line AA of FIG. 2A
- the bottom of the fourth fluid region 214 is the same as the second and third fluid regions 212 and 213, and a nitrocellulose layer 2141 is also formed, which is also a hollow network structure. Type for the storage of excess fluid. Further, in the hollow network configuration of the nitrocellulose layer 2141, similar to the nitrocellulose layers 2121 and 2131 at the bottom of the second and third fluid regions 212, 213, a reaction material reactive with the component to be tested in the fluid is also contained.
- the nitrocellulose layer 2141 at the bottom of the fourth fluid zone 214 is identical in fabrication to the nitrocellulose layers 2121 and 2131 at the bottom of the second and third fluid zones 212, 213, and is cast in the second fluid zone with the nitrocellulose solution. 212, the third fluid zone 213 and the bottom of the fourth fluid zone 214 are further dried; and the formation of the reaction material in the nitrocellulose layers 2121, 2131 and 2141 can also be dried in the nitrocellulose layers 2121, 2131 and 2141.
- the reaction solution containing the reaction material is injected, and the reaction material is dried into a powder form and left in the nitrocellulose by air drying or freeze drying.
- the structure, the size and the interconnection relationship of the first fluid region, the second fluid region, and the third fluid region in the embodiment, the preferred material of the substrate, the surface roughness, the configuration of the nitrocellulose layer of the test piece, and the formation The composition, the preferred ratio of the nitrocellulose solution used, and the composition of the reaction material are the same as those in the first embodiment, and the description thereof will not be repeated here.
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- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/306,972 US20110318822A1 (en) | 2008-08-29 | 2008-08-29 | Analytical strip |
CN2008801304295A CN102099682B (zh) | 2008-08-29 | 2008-08-29 | 流体检测试片 |
JP2011522364A JP5139581B2 (ja) | 2008-08-29 | 2008-08-29 | 分析用ストリップ |
EP08800549.1A EP2336776B1 (en) | 2008-08-29 | 2008-08-29 | Liquid test strip |
PCT/CN2008/001551 WO2010022543A1 (zh) | 2008-08-29 | 2008-08-29 | 流体检测试片 |
KR1020117001870A KR20110046451A (ko) | 2008-08-29 | 2008-08-29 | 분석 스트립 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2008/001551 WO2010022543A1 (zh) | 2008-08-29 | 2008-08-29 | 流体检测试片 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010022543A1 true WO2010022543A1 (zh) | 2010-03-04 |
Family
ID=41720768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2008/001551 WO2010022543A1 (zh) | 2008-08-29 | 2008-08-29 | 流体检测试片 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110318822A1 (zh) |
EP (1) | EP2336776B1 (zh) |
JP (1) | JP5139581B2 (zh) |
KR (1) | KR20110046451A (zh) |
CN (1) | CN102099682B (zh) |
WO (1) | WO2010022543A1 (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7964370B2 (en) | 2008-10-17 | 2011-06-21 | Actherm Inc | Analytical strip and detecting method using the same |
US8372660B2 (en) | 2008-10-09 | 2013-02-12 | Actherm Inc | Quantitative analyzing method |
CN103364562A (zh) * | 2013-08-01 | 2013-10-23 | 青岛宝依特生物制药有限公司 | 磺胺类药物残留检测试纸条及使用方法 |
CN105518460A (zh) * | 2013-08-08 | 2016-04-20 | 赛多利斯史泰迪生物技术有限责任公司 | 侧流膜装置和包含该装置的侧流免疫测定装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010108310A1 (zh) * | 2009-03-23 | 2010-09-30 | 红电医学科技股份有限公司 | 流体检测试片及其制造方法 |
KR101287953B1 (ko) * | 2011-11-21 | 2013-07-18 | (주)실리콘화일 | 마이크로 플루이딕 반도체 센서 |
Citations (3)
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WO2000042434A1 (de) * | 1999-01-09 | 2000-07-20 | Bernd Pevec | Verfahren und vorrichtung zur bestimmung eines analyten |
CN1854728A (zh) * | 2005-04-20 | 2006-11-01 | 华广生技股份有限公司 | 电化学式感测试片与其制作方法 |
CN1954214A (zh) * | 2004-03-30 | 2007-04-25 | 华特曼公司 | 侧流格式、材料和方法 |
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FR2584498B1 (fr) * | 1985-07-02 | 1987-10-16 | Centre Nat Rech Scient | Dispositif pour detecter sur une feuille de nitrocellulose la presence de complexes macromoleculaires, tels que antigenes/anticorps et procede de mise en oeuvre. |
EP0366241A3 (en) * | 1988-10-04 | 1990-05-23 | Fisher Scientific Company | Device with adsorbent surface and method |
US5547833A (en) * | 1994-01-04 | 1996-08-20 | Intracel Corporation | Radial flow assay, delivering member, test kit, and methods |
GB9705667D0 (en) * | 1997-03-19 | 1997-05-07 | Jackson James R | Diagnostic and analytical devices |
EP1102989B1 (en) * | 1998-08-06 | 2003-04-16 | Spectral Diagnostics Inc. | Analytical test device and method |
US6921637B2 (en) * | 2000-05-04 | 2005-07-26 | The Cbr Institute For Biomedical Research, Inc. | Colloid compositions for solid phase biomolecular analytical, preparative and identification systems |
US6656745B1 (en) * | 2000-06-02 | 2003-12-02 | Francis X. Cole | Devices and methods for a multi-level, semi-quantitative immunodiffusion assay |
AU2002224414B2 (en) * | 2000-10-18 | 2006-10-19 | Clarity Technologies Incorporated | Method and device for diluting a fluid and detecting analytes within a diluted fluid |
CN100386627C (zh) * | 2001-07-03 | 2008-05-07 | 包刚 | 过滤型蛋白芯片 |
US6884592B2 (en) * | 2001-09-05 | 2005-04-26 | Lifescan, Inc. | Devices for analyte concentration determination and methods of manufacturing and using the same |
JP4678516B2 (ja) * | 2002-08-16 | 2011-04-27 | アヴァントラ バイオサイエンスィズ コーポレーション | 材料の分離、反応、および顕微鏡分析のための基板 |
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FI118904B (fi) * | 2003-03-28 | 2008-04-30 | Ani Biotech Oy | Monikanavainen testiväline, menetelmä sen valmistamiseksi ja sen käyttö |
SE0400662D0 (sv) * | 2004-03-24 | 2004-03-24 | Aamic Ab | Assay device and method |
SE527036C2 (sv) * | 2004-06-02 | 2005-12-13 | Aamic Ab | Analysanordning med reglerat flöde och motsvarande förfarande |
JP2008514966A (ja) * | 2004-09-30 | 2008-05-08 | クイデル コーポレイション | 第1及び第2流路を有する分析装置 |
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2008
- 2008-08-29 US US12/306,972 patent/US20110318822A1/en not_active Abandoned
- 2008-08-29 WO PCT/CN2008/001551 patent/WO2010022543A1/zh active Application Filing
- 2008-08-29 CN CN2008801304295A patent/CN102099682B/zh not_active Expired - Fee Related
- 2008-08-29 JP JP2011522364A patent/JP5139581B2/ja not_active Expired - Fee Related
- 2008-08-29 KR KR1020117001870A patent/KR20110046451A/ko not_active Ceased
- 2008-08-29 EP EP08800549.1A patent/EP2336776B1/en not_active Not-in-force
Patent Citations (3)
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WO2000042434A1 (de) * | 1999-01-09 | 2000-07-20 | Bernd Pevec | Verfahren und vorrichtung zur bestimmung eines analyten |
CN1954214A (zh) * | 2004-03-30 | 2007-04-25 | 华特曼公司 | 侧流格式、材料和方法 |
CN1854728A (zh) * | 2005-04-20 | 2006-11-01 | 华广生技股份有限公司 | 电化学式感测试片与其制作方法 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8372660B2 (en) | 2008-10-09 | 2013-02-12 | Actherm Inc | Quantitative analyzing method |
US7964370B2 (en) | 2008-10-17 | 2011-06-21 | Actherm Inc | Analytical strip and detecting method using the same |
CN103364562A (zh) * | 2013-08-01 | 2013-10-23 | 青岛宝依特生物制药有限公司 | 磺胺类药物残留检测试纸条及使用方法 |
CN105518460A (zh) * | 2013-08-08 | 2016-04-20 | 赛多利斯史泰迪生物技术有限责任公司 | 侧流膜装置和包含该装置的侧流免疫测定装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2336776A4 (en) | 2011-08-31 |
JP5139581B2 (ja) | 2013-02-06 |
CN102099682B (zh) | 2013-12-18 |
CN102099682A (zh) | 2011-06-15 |
KR20110046451A (ko) | 2011-05-04 |
US20110318822A1 (en) | 2011-12-29 |
EP2336776B1 (en) | 2014-03-05 |
JP2011530703A (ja) | 2011-12-22 |
EP2336776A1 (en) | 2011-06-22 |
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