WO2004040288A1 - 分析用具 - Google Patents
分析用具 Download PDFInfo
- Publication number
- WO2004040288A1 WO2004040288A1 PCT/JP2003/013506 JP0313506W WO2004040288A1 WO 2004040288 A1 WO2004040288 A1 WO 2004040288A1 JP 0313506 W JP0313506 W JP 0313506W WO 2004040288 A1 WO2004040288 A1 WO 2004040288A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- window
- sample liquid
- analysis tool
- tool according
- exposed portion
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3271—Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood
- G01N27/3272—Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels
Definitions
- the present invention relates to an analysis tool used for analyzing a specific component (for example, glucose or cholesterol) contained in a sample solution such as blood or urine.
- a specific component for example, glucose or cholesterol
- a biosensor employing a capillary method When analyzing glucose contained in blood, a biosensor employing a capillary method is used. As shown in FIG. 9 and FIG. 10, some biosensors 6 have a window 61 for # 3 ⁇ 4 indicating that the sample solution has been supplied inside the capillary 60 (for example, Japanese Patent Publication No. 2001-526388).
- the cavity 60 is composed of a substrate 62, a spacer 63, and a cover 64.
- a working electrode 65 and a counter electrode 66 are formed on the substrate 62.
- the working electrode 65 and the counter electrode 66 are covered with an insulating film 67 so that both ends 65 a, 65 b, 66 a, and 66 b are exposed, and the ends 65 a, 66 of the working electrode 65 and the counter electrode 66.
- the force of a is connected by the S reagent part 68.
- the window 61 is a part of the cover 64 with high light quality! It is formed by providing a / ⁇ region.
- the window 61 is formed so as to extend continuously between the sample liquid inlet 69 a and the exhaust 69 b, including immediately above the ends 65 a and 66 a of the working electrode 65 and the counter electrode 66. .
- the sample liquid into which the force of the sample liquid inlet 69a is also introduced moves through the inside of the capillary 60 toward the exhaust port 69b by a capillary phenomenon. Such movement of the sample liquid can be visually confirmed by the window 61 formed in the biosensor 6.
- the width of the capillary 60 is reduced, and the window 61 is connected between the sample solution inlet 69a and the exhaust port 69b. It is formed so as to extend. Therefore, in Biosensor 6, it is necessary to confirm to which part of the capillary 60 the sample liquid has reached. It may be difficult, and it is not always easy for the user to visually check that the sample liquid has reached the target site in the cabillary 60. If the insulating film 67 covering the working electrode 65 and the counter electrode 66 is colored ⁇ , the color of the insulating film 67 may obscure the color of the sample solution. Is also more difficult, visually.
- the window 61 is formed immediately above the ends 65a and 66a of the working electrode 65 and the counter electrode 66, the internal configuration of the biosensor 6 such as the working electrode 65 and the counter electrode 66 before use. I can see it, and it looks bad. Disclosure of the invention
- An object of the present invention is to make it possible to visually and easily determine whether or not a force of a sample solution has reached a target site in a cabillary without damaging the appearance of an analytical tool.
- a sample liquid inlet, a capillary for moving the sample liquid introduced from the sample liquid inlet, and a sample liquid necessary for measurement are supplied to the inside of the above-mentioned capillary.
- An analysis tool comprising: a window for performing the analysis; and an analysis tool having an opaque region between the sample liquid inlet and the window.
- the analysis tool includes, for example, a substrate, a cover bonded to the substrate and forming a cavity together with the power substrate, and a working electrode and a counter electrode formed on 3 ⁇ 4s and having an exposed portion facing the inside of the force and the cavity. , Are provided.
- at least a part of the window is formed in a region other than directly above the exposed portion. It is preferable that the window is formed in an area that does not directly overlie the exposed part.
- the analysis tool of the present invention can be configured as provided with an exhaust port for discharging gas inside the capillary.
- the window is provided between the exhaust port and the exposed portion located at the most downstream in the flow direction of the sample liquid.
- the most upstream point in the window portion is substantially or substantially equal to the most downstream point of the exposed portion located at the most downstream in the thickness direction of the substrate.
- the analytical device is provided with the above-mentioned confrontation and the above-mentioned cover. [0092]
- the light emitting portion is formed by providing a bright portion.
- the cover is formed, for example, to have a form in which an opaque layer having an opening is laminated on the surface of a transparent material, and in the symbol: ⁇ , the window is defined by the opening. .
- the opaque layer can be formed directly on the surface of the transparent material.
- Examples of the method for forming the opaque layer directly include gravure printing, screen printing, vapor deposition, sputtering, and CVD. In the present invention, it is preferable to form the film directly by gravure printing or screen printing.
- the opaque layer can be formed as a thin film attached to the surface of a transparent material. Such an opaque layer can be formed by, for example, attaching a colored film having an opening to a cover.
- the force par can also be formed as having an opaque element with an opening and a transparent element buried in the opening, where the window is formed by a transparent element. Is done.
- the opaque part of the cover should be formed in contrast to the color of the sample liquid, for example, blood or urine, preferably in a color.
- the analysis tool of the present invention is configured as having, for example, an i3 ⁇ 4ti window for confirming the introduction and opening of the sample cover into the interior of the capillary.
- the analysis tool can be configured as further provided with a working electrode and a counter electrode formed on the substrate and having an exposed portion facing the inside of the force and the cavity. This ⁇ , follow up!
- the window of [] is formed at least partially in a region avoiding immediately above the exposed portion.
- the window of ⁇ ⁇ be formed entirely in the area avoiding the area directly above the exposed part.
- the window of the violent opening is located at the sample liquid inlet and the uppermost stream in the flow direction of the sample liquid. It is provided between the exposure part and. This: The additional window is provided, for example, adjacent to the sample liquid inlet.
- the additional window can be formed in the same manner as the window.
- the term “transparent” refers to ⁇ ⁇ ⁇ which has a light transmittance of ⁇ ⁇ ⁇ m so that the purpose of the window portion can be achieved by the sample liquid covering the kyaryri, and is not necessarily limited to visible light. It has a power of 00%, is close to it, and has limited transmittance.
- FIG. 1 is an overall perspective view showing a biosensor according to a first embodiment of the present invention.
- FIG. 2 is an extra view of the biosensor shown in FIG.
- FIG. 3 is a sectional view taken along the line m--m in FIG.
- FIG. 4 is a plan view of the biosensor shown in FIG.
- FIGS. 5A and 5B are plan views showing a state in which the sample solution is introduced into the cavities of the biosensor shown in FIG.
- FIG. 6A to 6D are plan views illustrating other examples of the biosensor according to the present invention.
- FIG. 7 is an overall view showing a biosensor according to a second embodiment of the present invention.
- FIG. 8 is a sectional view taken along the line vm— in FIG.
- FIG. 9 is an exploded perspective view showing an example of a conventional biosensor.
- FIG. 10 is a cross-sectional view of the biosensor shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION ⁇
- the following is an explanation of the first and second embodiments of the present invention! This will be specifically described with reference to the drawings.
- the biosensor 1 shown in FIGS. 1 to 4 is used to analyze a specific component contained in a sample solution such as blood or urine by an electrochemical method.
- the noise sensor 1 has a substrate 2, a spacer 3, and a cover 4, and these components constitute a cabinet 5.
- the capillaries 5 are for moving the sample liquid from the sample liquid inlet 51 to the exhaust port 41.
- a working electrode 21 and a counter electrode 22 are formed on the upper surface of the substrate 2. These electrodes 21 and 22 are covered with an insulating film 23 such that both end portions 21a, 21b, 22a and 22b are exposed.
- the working electrode 21 and the end 21 a of the counter electrode 22 are connected by a reagent part 24.
- the reagent section 24 is formed in a solid state containing, for example, a reducing enzyme and an electron transfer substance.
- the type of electron mediator is selected according to the type of the component to be measured.For example, glucose dehydrogenase / glucose oxidase is used as an oxidoreductase to measure the concentration of glucose, and the electron mediator Ferricyanization reams are used.
- the spacer 3 is for defining the height of the interior of the cavity 5.
- the spacer 3 is formed with a slit 31 whose tip is open.
- the slit 31 defines the width of the inside of the cavity 5, and the open end of the slit 31 defines a sample liquid inlet 51 for introducing the sample liquid into the cavity 5. I have.
- the cover 4 has a vent 41 and two windows 42 and 43 as shown in FIGS.
- the exhaust port 41 is for exhausting gas inside the cavity 5 to the outside, and communicates with the interior of the cavity 5.
- the window portion 42 is for measuring the force of the sample liquid into the cavity 5 at which the introduction of the sample liquid is started, and is used when introducing the sample liquid through the sample liquid inlet 51. It is also a landmark.
- the window portion 43 is for adjusting the moving state of the sample liquid in the cavity 5, and is provided at a position closer to the sample liquid inlet 51 than to the outlet 41.
- the cover 4 has a form in which an opaque layer 45 is laminated on the upper surface of a transparent material 44.
- the transparent material 44 has a through hole 46 that constitutes the exhaust port 41, and is entirely formed of a transparent resin or the like.
- the opaque layer 45 has three openings 47a to 47c.
- the opening 47 a constitutes the window 42 and is formed at a position close to the sample liquid inlet 51.
- the opening 47 b constitutes the window 43, and is located immediately above the cabillary 5, and the opening 47 c (exhaust port 41) and the ends 21 a, 22 of the working electrode 21 and the counter electrode 22. It is provided between a.
- the opening 47c constitutes the exhaust port 41, and is provided at a portion of the transparent material 44 corresponding to the through hole 46.
- the opaque layer 45 is formed, for example, directly on the upper surface of the transparent material 44.
- Opaque layer 45 The method of film formation is gravure printing, screen printing, vapor deposition, sputtering,
- the opaque layer 45 is formed by applying, for example, an ink or paint containing a pigment to the upper surface of the transparent material 44 and then drying it.
- the pigment it is preferable to use a pigment having a high contrast with the color of the sample liquid.
- the opaque layer 45 can also be formed by attaching a colored film to the upper surface of a transparent material.
- the sample liquid when the sample liquid is introduced from the sample liquid inlet 51, the sample liquid moves toward the exhaust port 41 by capillary action.
- the sample liquid can be easily and reliably introduced using the window 42 as a mark.
- it can be determined whether or not the force of the sample liquid introduced into the cabilli 5 is based on whether or not the color applied through the window 42 has changed.
- whether or not the amount of the sample solution required for measurement was supplied into the inside of the capillary 5, for example, whether or not the force of the working electrode 21 and the counter electrode 22 was wet by the surface solution sample solution, is shown in FIG. As shown by hatching, it can be determined whether the color displayed through the window 43 has changed.
- the reagent part 24 is dissolved by the sample liquid.
- a liquid phase reaction system force S is built in the cavity 5.
- an oxidation-reduction reaction occurs, and a reaction product correlated with the amount of the component to be measured is obtained.
- the amount of the reaction product is grasped, for example, as a response current value corresponding to the amount of the reaction product. Therefore, the amount of the measurement target component can be calculated based on the response current value.
- the introduction of the sample liquid into the capillary 5 was started visually, or the amount of the sample liquid necessary for the measurement was changed by visual inspection due to the change in the color ⁇ obtained through the windows 42 and 43.
- ⁇ ⁇ can be easily and reliably supplied to the interior of the cab 5.
- the contrast around the windows 42 and 43 and the contrast of the color of the sample liquid are remarkably different, the sample liquid has been introduced into the cabinet 5, and the sample liquid has reached the target site. Can be more easily and reliably determined.
- the windows 42 and 43 are formed in portions avoiding directly above the working electrode 21 and the counter electrode 22, Since the portion of the surface of the power cover 4 where the windows 42 and 43 are formed is relatively small, the inside of the biosensor 1 that is externally exposed through the windows 42 and 43 is reduced. Since the area is small and the working electrode 21 and the counter electrode 22 are not seen through the cover 4, the appearance of the bi-year sensor 1 can be improved.
- the window to be formed in the biosensor can have a configuration as shown in FIGS. 6A to 6D, for example.
- FIG. 6A shows a form in which the window 43 is connected to the exhaust port 41.
- FIG. 6B shows a form in which the window 42 is omitted.
- FIG. 6C shows a configuration in which the window 42 extends right above the working electrode 21.
- FIG. 6D shows a configuration in which the window 43 extends right above the counter electrode 22.
- the portion from the sample solution inlet 51 adjacent to the window 43 is formed opaque, and the window is located in a region avoiding at least one of the working electrode 21 and the counter electrode 22. Parts 42 and 43 are formed. Therefore, the same effects as those of the biosensor 1 described above can be obtained.
- FIG. 7 a biosensor according to a second embodiment of the present invention will be described with reference to FIG. 7 and FIG.
- the same elements as those of the biosensor 1 described above are denoted by the same reference numerals, and redundant description will be omitted.
- the cover 4' is configured by combining two members.
- the cover 4 ' has an opaque element 48 provided with openings 48a and 48b, and transparent elements 49a and 49b embedded in the openings 48a and 48b.
- the transparent elements 49a and 49b constitute the windows 49A and 49B.
- the biosensor can be variously changed in the form of the windows 49A and 49B in the same manner as described above with reference to FIGS. 6A to 6D for the biosensor 1.
- the present invention is not limited to the above-described embodiments, and various design changes can be made.
- the force described in the example of the analytical tool in which the cavities are formed by the substrate, the spacer, and the cover can also be applied to an analytical tool in which cavities are formed by a substrate and a force par.
- the present invention is further applicable not only to an analysis tool for performing analysis by an electrochemical method but also to an analysis tool configured to perform analysis by an optical method.
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Hematology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Biophysics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03809849A EP1557664B1 (en) | 2002-10-31 | 2003-10-22 | Electrochemical biosensor test-strip |
US10/533,601 US7594983B2 (en) | 2002-10-31 | 2003-10-22 | Analytical tool |
AU2003277510A AU2003277510A1 (en) | 2002-10-31 | 2003-10-22 | Analytical tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002/318517 | 2002-10-31 | ||
JP2002318517A JP3878993B2 (ja) | 2002-10-31 | 2002-10-31 | 分析用具 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004040288A1 true WO2004040288A1 (ja) | 2004-05-13 |
Family
ID=32211777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/013506 WO2004040288A1 (ja) | 2002-10-31 | 2003-10-22 | 分析用具 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7594983B2 (ja) |
EP (1) | EP1557664B1 (ja) |
JP (1) | JP3878993B2 (ja) |
CN (1) | CN100432661C (ja) |
AU (1) | AU2003277510A1 (ja) |
WO (1) | WO2004040288A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060091006A1 (en) * | 1999-11-04 | 2006-05-04 | Yi Wang | Analyte sensor with insertion monitor, and methods |
WO2008085251A1 (en) | 2007-01-05 | 2008-07-17 | Bayer Healthcare Llc | Electrochemical test sensor with light guide |
JP5376428B2 (ja) * | 2008-09-16 | 2013-12-25 | パナソニック株式会社 | 分析用デバイス |
KR20100006410A (ko) * | 2008-07-09 | 2010-01-19 | 주식회사 올메디쿠스 | 감지전극이 형성된 바이오센서 및 이것을 이용한 시료의분석 방법 |
US8012428B2 (en) * | 2008-10-30 | 2011-09-06 | Lifescan Scotland, Ltd. | Analytical test strip with minimal fill-error sample viewing window |
JP2010271255A (ja) * | 2009-05-22 | 2010-12-02 | Nipro Corp | 立体型血液成分測定用センサ |
US8593164B2 (en) | 2009-10-16 | 2013-11-26 | Brigham Young University (Byu) | Cell for broadband dielectric spectroscopy |
JP5381936B2 (ja) * | 2010-09-03 | 2014-01-08 | ニプロ株式会社 | バイオセンサ |
JP5730396B2 (ja) * | 2011-07-28 | 2015-06-10 | 京セラ株式会社 | バイオセンサ |
JP5566543B2 (ja) * | 2012-03-30 | 2014-08-06 | 国立大学法人九州大学 | センサ、検出方法、検出システム、及び、検出装置 |
JP5973595B2 (ja) * | 2013-01-30 | 2016-08-23 | 京セラ株式会社 | センサ装置 |
JP6300057B2 (ja) * | 2013-03-18 | 2018-03-28 | 大日本印刷株式会社 | 濃度測定センサおよびその製造方法、濃度測定センサ用シートおよびフラッシュアニール処理方法 |
WO2015025946A1 (ja) * | 2013-08-23 | 2015-02-26 | 京セラ株式会社 | センサ |
TWI551860B (zh) * | 2015-07-17 | 2016-10-01 | 台欣生物科技研發股份有限公司 | 測試片 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999030152A1 (en) | 1997-12-05 | 1999-06-17 | Roche Diagnostics Corporation | Improved electrochemical biosensor test strip |
JP2000206077A (ja) * | 1999-01-07 | 2000-07-28 | Matsushita Electric Ind Co Ltd | 検体測定用センサ―および検体測定装置 |
EP1114995A2 (en) | 1999-12-30 | 2001-07-11 | Roche Diagnostics Corporation | Cell and method for electrochemical analysis of a sample |
JP2001305093A (ja) * | 2000-04-27 | 2001-10-31 | Matsushita Electric Ind Co Ltd | バイオセンサ |
WO2002010735A1 (fr) * | 2000-07-31 | 2002-02-07 | Matsushita Electric Industrial Co., Ltd. | Biocapteur |
JP2002181757A (ja) * | 2000-12-11 | 2002-06-26 | Matsushita Electric Ind Co Ltd | バイオセンサおよび基質の測定方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2254223A1 (en) * | 1998-11-16 | 2000-05-16 | Biophys, Inc. | Device and method for analyzing a biologic sample |
CN1296180A (zh) * | 1999-11-11 | 2001-05-23 | 五鼎生物技术股份有限公司 | 具多功能取样方式之生化感测器 |
JP2001159618A (ja) * | 1999-12-03 | 2001-06-12 | Matsushita Electric Ind Co Ltd | バイオセンサ |
GB0005564D0 (en) * | 2000-03-08 | 2000-05-03 | Inverness Medical Ltd | Measurjement of substances in liquid |
DE60119133T2 (de) | 2000-07-31 | 2007-01-25 | Matsushita Electric Industrial Co., Ltd., Kadoma | Biosensor |
US20030095897A1 (en) * | 2001-08-31 | 2003-05-22 | Grate Jay W. | Flow-controlled magnetic particle manipulation |
-
2002
- 2002-10-31 JP JP2002318517A patent/JP3878993B2/ja not_active Expired - Lifetime
-
2003
- 2003-10-22 CN CNB2003801025970A patent/CN100432661C/zh not_active Expired - Lifetime
- 2003-10-22 US US10/533,601 patent/US7594983B2/en active Active
- 2003-10-22 AU AU2003277510A patent/AU2003277510A1/en not_active Abandoned
- 2003-10-22 WO PCT/JP2003/013506 patent/WO2004040288A1/ja active Application Filing
- 2003-10-22 EP EP03809849A patent/EP1557664B1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999030152A1 (en) | 1997-12-05 | 1999-06-17 | Roche Diagnostics Corporation | Improved electrochemical biosensor test strip |
JP2000206077A (ja) * | 1999-01-07 | 2000-07-28 | Matsushita Electric Ind Co Ltd | 検体測定用センサ―および検体測定装置 |
EP1114995A2 (en) | 1999-12-30 | 2001-07-11 | Roche Diagnostics Corporation | Cell and method for electrochemical analysis of a sample |
JP2001305093A (ja) * | 2000-04-27 | 2001-10-31 | Matsushita Electric Ind Co Ltd | バイオセンサ |
WO2002010735A1 (fr) * | 2000-07-31 | 2002-02-07 | Matsushita Electric Industrial Co., Ltd. | Biocapteur |
JP2002181757A (ja) * | 2000-12-11 | 2002-06-26 | Matsushita Electric Ind Co Ltd | バイオセンサおよび基質の測定方法 |
Also Published As
Publication number | Publication date |
---|---|
US20060049047A1 (en) | 2006-03-09 |
EP1557664A1 (en) | 2005-07-27 |
EP1557664B1 (en) | 2012-08-15 |
CN100432661C (zh) | 2008-11-12 |
JP2004151016A (ja) | 2004-05-27 |
AU2003277510A1 (en) | 2004-05-25 |
EP1557664A4 (en) | 2011-05-18 |
JP3878993B2 (ja) | 2007-02-07 |
US7594983B2 (en) | 2009-09-29 |
CN1708687A (zh) | 2005-12-14 |
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