WO2005019822A1 - Verfahren und vorrichtung zur detektion von analyten - Google Patents
Verfahren und vorrichtung zur detektion von analyten Download PDFInfo
- Publication number
- WO2005019822A1 WO2005019822A1 PCT/EP2004/009306 EP2004009306W WO2005019822A1 WO 2005019822 A1 WO2005019822 A1 WO 2005019822A1 EP 2004009306 W EP2004009306 W EP 2004009306W WO 2005019822 A1 WO2005019822 A1 WO 2005019822A1
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- WO
- WIPO (PCT)
- Prior art keywords
- substances
- optical detector
- coding
- chip
- chemical substances
- Prior art date
Links
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Classifications
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- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
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- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
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- C—CHEMISTRY; METALLURGY
- C40—COMBINATORIAL TECHNOLOGY
- C40B—COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
- C40B40/00—Libraries per se, e.g. arrays, mixtures
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- C40B40/04—Libraries containing only organic compounds
- C40B40/10—Libraries containing peptides or polypeptides, or derivatives thereof
Definitions
- the present invention relates generally to a method and an apparatus for optophysical detection of analytes.
- the invention relates to the miniaturization of previously known systems in which an analyte is detected by color recognition directly on the chip to which the analyte is applied.
- Biomolecules in a sample to be analyzed the use of essentially planar systems is known, which are referred to in the art as biosensors or biochips. These biochips form a carrier, on the surface of which, as a rule. a multiplicity of detection areas, most of which are arranged in a grid, is formed, the individual areas or area groups each differing from one another in their specificity with respect to a specific analyte to be detected.
- specific nucleic acid probes such as, for example, are located within the individual regions of the carrier surface - directly or indirectly immobilized.
- oligonucleotides or cDNA in mostly single-stranded form, the specificity of which relative to the nucleic acid to be detected is essentially determined by the sequence sequence (probe design).
- biosensors or biochips are known, for example, from WO 03/008974 AI, in which the detection of analytes is described by means of time-resolved luminance measurements.
- test strips for the detection of analytes are known to experts. With these test strips, their color changes within z. B. 60 seconds depending on the composition of the analytes. In principle, this color change is based on the fact that e.g. For example, a blue object absorbs the wavelengths complementary to blue and only reflects or transmits the blue wavelengths. The reason for this is that the electrons of the substance can only be brought into an excited state by certain wavelengths. Now something changes in this substance, e.g. If, for example, an analyte with a specific pH value is applied, other wavelengths are absorbed, which means that the object has a different color. In the test strips are z. B. important components such. B.
- methyl red and bromothymol blue which can change depending on the pH range between 5 and 9 from orange to yellow to turquoise. This color change can then be recognized by the eye under normal lighting conditions and assigned to a color scale supplied by the manufacturer, which is not always easy. So z. B. Test strips for the detection of urobilinogen, bilirubin, ketone, ascorbic acid, glucose, protein, blood, pH, nitrite, leukocytes and specific weight. Despite the high reliability of the test strips, e.g. B. Urines with strong intrinsic color deceive the human eye in the rapid test evaluation. The use of the human eye limits the wavelengths. Different lighting conditions can also play a role.
- the currently known methods for reading the test strips are larger devices and the method separates the detection from the reaction of the analyte, since the test strip is pushed into the test device for reading after the reaction.
- the method separates the detection from the reaction of the analyte, since the test strip is pushed into the test device for reading after the reaction.
- usually only one component of the analyte per test strip can be read.
- test strip or the reactive layer is integrated in the test device, so that the reaction of the analyte and the detection of the reaction do not take place separately in the above sense.
- the reactive layer is arranged directly on a detector for detecting the reaction.
- only one component of the analyte can be detected here per reactive layer or per test strip.
- the object is therefore to create a device of the type mentioned at the outset which, while avoiding the disadvantages mentioned above, enables a high parallel measurement of several constituents of an analyte in a simple and compact structure.
- the camera chip is a CMOS or CCD chip, as is known to the person skilled in the art from the prior art.
- a pixel of such a color camera basically consists of three sub-pixels, each of which is sensitive to the colors red, green and blue.
- On this camera chip different chemical substances are directly or indirectly via z.
- not only one but at least two substances for analyzing two different components of the analyte are applied to an area of the camera. This can be done either as a stack or as a mixture. Because the absorptions of the wavelengths differ in the areas, these different absorption spectra can either be differentiated with the pixels or / and illuminated with a temporal change of different wavelengths or wavelengths in accordance with the different absorption spectra. As a result, the area of the semiconductor chip can be reduced in a particularly simple manner.
- actively luminous substances e.g. chemical luminescence
- the camera chip After application of the analyte such. B. urine, there are different color changes on the chip. This color change can then be read with the camera chip in transmitted light if the surface to which the substances are applied is transparent to the wavelengths of the light source minus the wavelengths absorbed by the substance.
- the camera chip is in a light-tight housing and in this housing there is e.g. B. a white light source, which is then used for color detection. Daylight can also be used.
- Wavelengths outside the visible range are particularly preferably used, which can then be read with the chip but not with the eye. This extends the selection of chemical substances considerably. Reference is made here to the general prior art, according to which different materials (semiconductors) can detect different wavelength ranges.
- pixels can be left blank to allow calibration and measurement with e.g. B. To allow ambient light.
- the chip will particularly preferably digitize and / or store the data and be connected to a PC via a USB connector.
- the chemical substances which cause the color reaction can be applied directly to the chip in a preferred manner with the aid of printers, as are known from the field of biochip applications.
- the chemical substances particularly preferably bind covalently to the surface.
- the substances are applied to a carrier such as a film, paper strip or polymer, which is then z. B. placed on the chip or performed on this. It can particularly preferably be a light-tightly sealed chamber into which foils such as check cards can be inserted in the machine. The chip, which is located in the chamber directly under the film, then reads the film.
- a carrier such as a film, paper strip or polymer
- the reading device in the chamber can detect the This means that the user / patient does not have to enter which "application film” it is. B. in its memories for the corresponding data that have already been measured with this application chip in this patient. But is it z. B. to different patients, which are stored in this device, z. B. not only saved the application on the barcode, but also patient data.
- the patient simply taps a free area of the film with his thumb and leaves his fingerprint, which represents an additional coding, provided that a coding for the “application film”, for example in the form of a bar code, is already present then recognized by a fingerprint sensor in the reading device and the carrier assigned to the patient.
- This additional coding can also be used on its own without coding the “application foils”.
- coding in relation to other people or groups of people such as e.g. B. the treating doctor or the group of diabetes sufferers.
- Inequalities in the printing of the surfaces on the device according to the invention on a continuous pixel array or by adjustment tolerance of the film can be compensated for by grouping over intensity distributions of the different detection events.
- a barcode is located, which is read by the reader before the data is recorded.
- the chemical substances applied in the form of a specific array can also serve as coding.
- FIG. 1 longitudinal section through a camera with chemical substances that are immobilized at different points
- a camera chip 1 optical detectors 2, z. B. pn photodiodes integrated, which are sensitive to different colors by different coatings 3 and 4.
- the camera chip 1 is enclosed in a light-tight housing 7, the light source 8, which is located inside the housing 7, illuminating the reaction points on the chip 1, which detects any color changes that may be present.
- Figure 3 on a support 11 such.
- B. a film, paper strips or polymer different chemical substances 5 are applied in the form of an array.
- a barcode 9 encodes z. b. the application of the chip 1 and / or the patient, the doctor, the costs etc.
- the fingerprint 10 of an operator, such as a patient or a doctor or a sister, on the carrier 11 encodes the same.
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- Health & Medical Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
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- General Physics & Mathematics (AREA)
- Urology & Nephrology (AREA)
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- Clinical Laboratory Science (AREA)
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- Cell Biology (AREA)
- Microbiology (AREA)
- Plasma & Fusion (AREA)
- Dispersion Chemistry (AREA)
- Food Science & Technology (AREA)
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP04764290A EP1682892A1 (de) | 2003-08-19 | 2004-08-19 | Verfahren und vorrichtung zur detektion von analyten |
Applications Claiming Priority (2)
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DE10338101 | 2003-08-19 | ||
DE10338101.5 | 2003-08-19 |
Publications (1)
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WO2005019822A1 true WO2005019822A1 (de) | 2005-03-03 |
Family
ID=34201703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2004/009306 WO2005019822A1 (de) | 2003-08-19 | 2004-08-19 | Verfahren und vorrichtung zur detektion von analyten |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060233662A1 (de) |
EP (1) | EP1682892A1 (de) |
CN (1) | CN1853103A (de) |
WO (1) | WO2005019822A1 (de) |
Cited By (1)
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WO2008008239A1 (en) * | 2006-07-12 | 2008-01-17 | Micron Technology, Inc. | Method and apparatus providing analytical device and operating method based on solid state image sensor |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2172768A1 (de) * | 2008-10-06 | 2010-04-07 | Sony Corporation | Sensor zum Nachweis eines Analyten |
US20130064423A1 (en) * | 2011-09-09 | 2013-03-14 | Sony Corporation | Feature extraction and processing from signals of sensor arrays |
CN105842171B (zh) * | 2015-01-15 | 2019-05-17 | 中国科学院苏州纳米技术与纳米仿生研究所 | 一种生物化学检测系统 |
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- 2004-08-19 US US10/569,329 patent/US20060233662A1/en not_active Abandoned
- 2004-08-19 EP EP04764290A patent/EP1682892A1/de not_active Withdrawn
- 2004-08-19 WO PCT/EP2004/009306 patent/WO2005019822A1/de not_active Application Discontinuation
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Cited By (5)
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WO2008008239A1 (en) * | 2006-07-12 | 2008-01-17 | Micron Technology, Inc. | Method and apparatus providing analytical device and operating method based on solid state image sensor |
US7777287B2 (en) | 2006-07-12 | 2010-08-17 | Micron Technology, Inc. | System and apparatus providing analytical device based on solid state image sensor |
US8207588B2 (en) | 2006-07-12 | 2012-06-26 | Micron Technology, Inc. | Method and apparatus providing analytical device and operating method based on solid state image sensor |
US8609452B2 (en) | 2006-07-12 | 2013-12-17 | Micron Technology, Inc. | Method and apparatus providing analytical device and operating method based on solid state image sensor |
US9164040B2 (en) | 2006-07-12 | 2015-10-20 | Micron Technology, Inc. | Method and apparatus providing analytical device and operating method based on solid state image sensor |
Also Published As
Publication number | Publication date |
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EP1682892A1 (de) | 2006-07-26 |
US20060233662A1 (en) | 2006-10-19 |
CN1853103A (zh) | 2006-10-25 |
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