WO2017175841A1 - サーモサイクリング検査装置及びチップホルダー - Google Patents
サーモサイクリング検査装置及びチップホルダー Download PDFInfo
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- WO2017175841A1 WO2017175841A1 PCT/JP2017/014418 JP2017014418W WO2017175841A1 WO 2017175841 A1 WO2017175841 A1 WO 2017175841A1 JP 2017014418 W JP2017014418 W JP 2017014418W WO 2017175841 A1 WO2017175841 A1 WO 2017175841A1
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- chip
- holder
- thermocycling
- inspection
- peltier element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/52—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
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- G01—MEASURING; TESTING
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- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/6456—Spatial resolved fluorescence measurements; Imaging
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- B01L2200/06—Fluid handling related problems
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- B01L2200/0663—Stretching or orienting elongated molecules or particles
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- B01L2200/142—Preventing evaporation
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- B01L2200/143—Quality control, feedback systems
- B01L2200/147—Employing temperature sensors
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- B01L2300/0627—Sensor or part of a sensor is integrated
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01L2300/0627—Sensor or part of a sensor is integrated
- B01L2300/0654—Lenses; Optical fibres
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- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0819—Microarrays; Biochips
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- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
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- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
- B01L2300/1822—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks using Peltier elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0406—Moving fluids with specific forces or mechanical means specific forces capillary forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01L3/502715—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 interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/52—Supports specially adapted for flat sample carriers, e.g. for plates, slides, chips
- B01L9/527—Supports specially adapted for flat sample carriers, e.g. for plates, slides, chips for microfluidic devices, e.g. used for lab-on-a-chip
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6844—Nucleic acid amplification reactions
- C12Q1/686—Polymerase chain reaction [PCR]
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00029—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor provided with flat sample substrates, e.g. slides
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- G01N2035/00356—Holding samples at elevated temperature (incubation)
- G01N2035/00366—Several different temperatures used
Definitions
- the present invention relates to a thermocycling inspection apparatus that performs a sample inspection by polymerase chain reaction using a chip holder, and a chip holder used in the apparatus.
- a through-flow channel is formed inside, a capillary is embedded in at least a part of the channel, and a dummy rod for closing the channel is further embedded.
- the capillaries are made of glass or plastic provided in a branched or lattice shape (Patent Document 1).
- a plurality of grooves connected in parallel or in series are formed on the substrate, and capillaries with different chemical modifications are respectively embedded in the plurality of grooves, and the plurality of embedded A device that can supply fluid to a capillary and acquire detection data has been proposed (Patent Document 2).
- Patent Document 3 discloses an inspection chip that can manufacture a sample flow path, which is a square hollow groove having a corner of about 100 microns, by a simple method, and can easily introduce a sample solution into the sample flow path.
- Patent Document 3 discloses an inspection chip that can be used in one place.
- Patent Document 4 to Patent Document 7 disclose the structure and manufacturing method of this type of inspection chip.
- thermocycling inspection apparatus In the micro space reaction using the inspection chip, not only can the sample to be used be made minute, but also the reaction can be speeded up and highly efficient. However, in order to utilize this feature, it is necessary to provide a thermocycling inspection apparatus that can use this inspection chip.
- an object of the present invention is to provide a thermocycling inspection apparatus and a chip holder that can perform a polymerase chain reaction and can perform an inspection using an inspection chip that has performed the polymerase chain reaction.
- thermocycling inspection apparatus In the thermocycling inspection apparatus according to the first aspect of the present invention, a sample introduction port formed in the center and a plurality of sample channels extending radially from the sample introduction port are formed in the inspection chip, and the sample is formed.
- a thermocycling test apparatus that houses the test chip with a reagent fixed in a flow path in a chip holder, and uses the chip holder to perform a sample test by a polymerase chain reaction, and a holder housing space that houses the chip holder;
- a thermocycling unit that heats and cools the inspection chip; and a detector that images the inspection chip.
- thermocycling unit When the heating and cooling is performed by the thermocycling unit or when imaging is performed with the detector, The thermocycling unit is disposed, the detector is disposed in the other of the holder housing spaces, and the detector As with the optical axis sample inlet is matched, characterized in that the formation of the holder receiving space.
- the thermocycling unit includes a Peltier element, a heat sink disposed on one surface of the Peltier element, and the other of the Peltier element.
- thermocycling inspection apparatus in the thermocycling inspection apparatus according to the second aspect, a temperature sensor is disposed between the surface heater and the chip receiving tray.
- a holder pressing cover is provided to cover the chip holder disposed in the holder accommodating space, and a fluorescence detection window is formed on the holder pressing cover.
- thermocycling unit in the thermocycling inspection apparatus according to the first aspect, includes a Peltier element, a surface heater, a temperature sensor that detects a temperature of the inspection chip, and the Peltier element. And a control unit for controlling the temperature of the surface heater, wherein the control unit heats the inspection chip by the surface heater, cools the surface heater by the Peltier element, and detects the temperature sensor.
- the surface heater and the Peltier element are controlled such that the temperature periodically repeats a first set temperature and a second set temperature lower than the first set temperature.
- thermocycling inspection apparatus when the detected temperature detected by the temperature sensor in the control unit detects the first set temperature, the surface heater Is turned OFF, and the Peltier element is turned ON.
- the thermocycling inspection device when the detected temperature detected by the temperature sensor in the control unit detects the second set temperature, the Peltier element The second set temperature is maintained for a predetermined time by feedback-controlling the surface heater so that the detected temperature becomes the second set temperature in the OFF state.
- a chip holder used in the thermocycling inspection apparatus according to the present invention described in claim 8 is a chip holder used in the thermocycling inspection apparatus according to claim 1, and includes a chip storage tray for storing the inspection chip, and the chip storage. A holder that holds the tray in the center; and a chip presser that presses the inspection chip stored in the chip storage tray to the chip storage tray, and the chip presser is positioned by the holder.
- the inspection chip is formed with a sample introduction port formed in the center and a plurality of sample channels extending radially from the sample introduction port, and the sample channel
- a chip presser for pressing the chip against the chip receiving tray, and the chip presser is positioned by the holder.
- a positioning protrusion is formed on the chip receiving tray, and a positioning recess corresponding to the positioning protrusion is formed on the inspection chip.
- the present invention described in claim 11 is the chip holder according to claim 9, wherein the chip receiving tray is made of a material having a higher thermal conductivity than the holder.
- a concave portion is provided in the center of the chip receiving tray.
- thermocycling inspection apparatus of the present invention is a holder accommodation space for accommodating a chip holder, a thermocycling section for heating and cooling the inspection chip, a detector for photographing the inspection chip, and the holder accommodation
- a holder holding lid that covers the chip holder disposed in the space, and the thermocycling unit includes a Peltier element, a heat sink disposed on one surface of the Peltier element, and a surface disposed on the other surface of the Peltier element.
- the chip holder of the present invention is a chip storage tray for storing a test chip, a holder for holding the chip storage tray in a central portion, and the test chip stored in the chip storage tray for the chip storage tray. And a chip pressing member that presses the chip receiving portion, and a recess is provided in the center of the chip receiving tray.
- the polymerase chain reaction can be performed by heating and cooling the inspection chip by the thermocycling unit arranged in one of the holder housing spaces.
- the inspection chip can be photographed by the detector disposed in the other of the holder housing spaces, and the inspection chip subjected to the polymerase chain reaction can be inspected by photographing, thereby realizing a real-time inspection.
- the perspective view which shows the principal part structure of the thermocycling inspection apparatus by one Example of this invention The perspective view which shows the principal part of the thermocycling inspection apparatus The perspective view which shows the state which moved a part of main part of the thermocycling inspection apparatus shown in FIG.
- thermocycling section of the thermocycling inspection apparatus A) The perspective view which shows the thermocycling part of the thermocycling inspection apparatus, (b) The perspective view which shows the state which mounted
- thermocycling unit is arranged in one of the holder accommodating spaces during heating / cooling by the thermocycling unit or photographing with the detector, and the other of the holder accommodating spaces is arranged.
- a detector is disposed, and a holder accommodation space is formed so that the optical axis of the detector and the sample introduction port coincide.
- the polymerase chain reaction can be performed by heating and cooling the inspection chip by the thermocycling unit arranged in one of the holder accommodation spaces, and the detector arranged in the other of the holder accommodation spaces
- the inspection chip can be photographed by the above, and the inspection chip subjected to the polymerase chain reaction can be inspected by photographing, and POCT can be realized with a small apparatus.
- the thermocycling unit includes a Peltier element, a heat sink disposed on one surface of the Peltier element, and the other of the Peltier element.
- a surface heater disposed on the surface, and a cover plate that covers the other surface of the surface heater and the Peltier element, and a holder receiving space is formed to cover the cover plate. Is formed so that the inspection chip accommodated in the chip receiving tray is heated by the surface heater.
- the Peltier element can be controlled to a stable temperature with the heat sink disposed on one surface of the Peltier element, the inspection chip can be heated with the surface heater, and the surface heater is disposed on the other surface of the Peltier element.
- the surface heater can be cooled by a Peltier element, a periodic temperature change in a short time can be realized, and the polymerase chain reaction can be stably performed.
- thermocycling inspection apparatus in the thermocycling inspection apparatus according to the second embodiment, a temperature sensor is arranged between the surface heater and the chip receiving tray. According to the present embodiment, the temperature of the test chip can be detected more accurately, and the polymerase chain reaction can be performed stably.
- thermocycling inspection apparatus in the thermocycling inspection apparatus according to the second embodiment, a holder pressing cover that covers a chip holder arranged in the holder accommodation space is provided, and a fluorescence detection window is formed in the holder pressing cover. Then, a transparent substrate is provided on the holder holding space side of the holder pressing lid, and the fluorescence detection window is covered with the transparent substrate and the chip holder is pressed. According to the present embodiment, by pressing the chip holder with the transparent substrate, the adhesion between the chip receiving tray and the surface heater is increased, so that the heat of the surface heater can be easily transmitted to the chip receiving tray. The thermal responsiveness of can be improved.
- the thermocycling unit includes a Peltier element, a surface heater, a temperature sensor that detects the temperature of the inspection chip, and a Peltier element. And a control unit for controlling the temperature of the surface heater.
- the inspection chip is heated by the surface heater, the surface heater is cooled by the Peltier element, and the detected temperature detected by the temperature sensor is the first set temperature.
- the surface heater and the Peltier element are controlled so as to periodically repeat the second set temperature lower than the first set temperature.
- the inspection chip is heated by the surface heater and the surface heater is cooled by the Peltier element, so that the transition from the first set temperature to the second set temperature can be performed particularly quickly.
- the chain reaction can be performed in a short time.
- the controller turns off the surface heater when the detected temperature detected by the temperature sensor detects the first set temperature.
- the Peltier element is turned ON. According to the present embodiment, the transition from the first set temperature to the second set temperature can be quickly performed not only by turning off the surface heater but also by forcibly cooling the Peltier element.
- the control unit turns off the Peltier element when the detected temperature detected by the temperature sensor detects the second set temperature.
- the second set temperature is maintained for a predetermined time by feedback-controlling the surface heater so that the detected temperature becomes the second set temperature. According to this embodiment, by performing feedback control of the surface heater while the Peltier element is OFF, hunting can be reduced and stable control can be performed.
- the chip holder used in the thermocycling inspection apparatus is a chip holder used in the first thermocycling inspection apparatus, and includes a chip storage tray for storing the inspection chip, and a chip storage tray at the center. And a chip presser material that presses the inspection chip stored in the chip storage tray to the chip storage tray, and the chip presser is positioned by the holder.
- the present embodiment by pressing the inspection chip against the chip receiving tray with the chip presser, the adhesion between the inspection chip and the chip receiving tray is increased, so that the heat of the chip receiving tray can be easily transferred to the inspection chip. In addition, the thermal response of the inspection chip can be improved. Further, according to the present embodiment, by holding the chip receiving tray by the holder and positioning the chip presser material, it is possible to reliably press the test chip to the chip receiving tray by the chip presser material, Damage can be prevented.
- a chip holder includes a chip receiving tray for receiving an inspection chip, a holder for holding the chip receiving tray in the center, and an inspection chip stored in the chip receiving tray for pressing the chip receiving tray. And a chip presser material that is positioned by the holder.
- a chip presser material that is positioned by the holder.
- the tenth embodiment of the present invention is a chip holder according to the ninth embodiment, wherein a positioning protrusion is formed on the chip receiving tray, and a positioning recess corresponding to the positioning protrusion is formed on the inspection chip. is there.
- the inspection chip can be accurately positioned on the chip receiving tray by the positioning protrusion and the positioning concave portion, the inspection chip can be stably heated and cooled, and photographing can be performed accurately.
- the chip receiving tray is made of a material having higher thermal conductivity than the holder. According to the present embodiment, it is possible to quickly heat and cool the inspection chip by using a material having high thermal conductivity for the chip receiving tray, while using a material having low thermal conductivity for the holder. Heat diffusion to the holder can be prevented, and the thermal response of the inspection chip can be improved.
- the twelfth embodiment of the present invention is the chip holder according to the ninth embodiment, wherein a recess is provided in the center of the chip receiving tray. According to the present embodiment, it is possible to prevent the sample liquid injected from the sample introduction port from flowing out to the chip receiving tray.
- the thirteenth embodiment of the present invention is a chip holder according to the ninth embodiment, comprising a transparent film that is attached to the holder and prevents oil spillage added to the chip receiving tray. According to this embodiment, by sticking the transparent film to the holder, leakage of oil added to the chip receiving tray can be prevented, and the chip holder can be easily handled.
- the thermocycling unit includes a Peltier element, a heat sink disposed on one surface of the Peltier element, a surface heater disposed on the other surface of the Peltier element, And a cover plate that covers the other surface of the surface heater and the Peltier element, a holder housing space is formed so as to cover the cover plate, an opening is formed in the cover plate, and the holder presser lid is A fluorescence detection window for photographing the inspection chip is formed.
- the Peltier element can be controlled to a stable temperature with the heat sink disposed on one surface of the Peltier element, the inspection chip can be heated with the surface heater, and the surface heater is disposed on the other surface of the Peltier element.
- the surface heater can be cooled by a Peltier element, a periodic temperature change in a short time can be realized, and the polymerase chain reaction can be stably performed.
- a chip holder includes a chip receiving tray for receiving an inspection chip, a holder for holding the chip receiving tray in the center, and an inspection chip stored in the chip receiving tray for pressing the chip receiving tray.
- a chip presser material, and a recess is provided in the center of the chip receiving tray.
- FIG. 1 is a perspective view showing a main part configuration of a thermocycling inspection apparatus according to the present embodiment
- FIG. 2 is a perspective view showing main parts of the thermocycling inspection apparatus
- FIG. 3 is a main part of the thermocycling inspection apparatus shown in FIG. It is a perspective view which shows the state which moved a part of part.
- the thermocycling inspection apparatus includes a holder housing space 10 that houses a chip holder, a thermocycling unit 20 that heats and cools the inspection chip, and a detector 30 that photographs the inspection chip.
- the holder housing space 10 is formed above the thermocycling unit 20.
- Above the holder accommodation space 10, a holder presser lid 40 that covers the chip holder disposed in the holder accommodation space 10 is provided.
- the housing 1 has a front door 2 on the front surface and a pair of guiders 3 on both inner side surfaces or the inner bottom surface.
- the pair of slide rails 4 slide on the pair of guiders 3.
- the holder accommodating space 10, the thermocycling unit 20, and the holder presser lid 40 can be drawn forward from the front surface of the housing 1 by the pair of slide rails 4.
- FIGS. 2 and 3 show a state in which the holder housing space 10, the thermocycling unit 20, and the holder presser lid 40 are pulled out from the housing 1, and FIG. 2 shows the holder housing space 10, the thermocycling unit 20, And the state which accommodated the holder pressing lid 40 in the housing
- the inside of the housing 1 is divided into a front space A and a rear space B.
- the holder accommodating space 10, the thermocycling unit 20, and the holder presser lid 40 are accommodated in the front space A.
- the rear space B accommodates a control unit that controls the Peltier element and the surface heater based on the detected temperature detected by the temperature sensor.
- a fluorescence detection window 41 is formed in the holder pressing lid 40.
- the holder pressing lid 40 is provided with a torque hinge 42.
- a cooling fan 5 that discharges air in the housing 1 is provided in the rear space B.
- the front space A forms an intake port 6 on the bottom surface of the housing 1.
- a detector 30 is disposed on the top of the housing 1.
- the detector 30 includes a camera 31, a camera lens 32, an illumination LED 33, and a holding material 34.
- the camera 31 is held on the top of the housing 1 by a holding material 34.
- the camera 31 holds a camera lens 32 at the bottom.
- the pair of illumination LEDs 33 are arranged on both sides of the camera lens 32 and attached to the upper part of the front space A.
- the optical axis of the camera lens 32 coincides with the center of the fluorescence detection window 41, and the optical axes of the pair of illumination LEDs 33 are directed to the fluorescence detection window 41.
- the holder accommodating space 10, the thermocycling unit 20, and the holder presser lid 40 are accommodated in the housing 1, that is, when heating / cooling by the thermocycling unit 20 and photographing with the detector 30.
- the thermocycling unit 20 is disposed in one of the holder housing spaces 10
- the detector 30 is disposed in the other of the holder housing spaces 10.
- the holder accommodation space 10 is formed so that the optical axis of the detector 30 and the sample introduction port formed in the center of a test
- the polymerase chain reaction can be performed by heating and cooling the inspection chip by the thermocycling unit 20 disposed in one side of the holder housing space 10, and disposed in the other side of the holder housing space 10.
- the inspection chip can be imaged by the detector 30, and the inspection chip subjected to the polymerase chain reaction can be inspected by imaging, and POCT (real-time inspection) can be realized with a small apparatus.
- FIG. 4A is an exploded perspective view showing a thermocycling portion of the thermocycling inspection apparatus
- FIG. 4B is a configuration diagram of a temperature sensor.
- the thermocycling unit 20 includes a Peltier element 21, a heat sink 22 disposed on one surface 21a of the Peltier element 21, a surface heater 23 disposed on the other surface 21b of the Peltier element 21, and the surface heater 23 and the Peltier element 21. It has a cover plate 24 that covers the other surface 21b, a temperature sensor 25 that detects the temperature of the inspection chip, and a fan 26 that increases the heat exchange performance of the heat sink 22.
- One surface 21 a of the Peltier element 21 is bonded to the heat sink 22 by a heat conductive adhesive transfer tape 27.
- the surface heater 23 is bonded to the other surface 21 b of the Peltier element 21 by a heat conductive adhesive transfer tape 28.
- an opening 24a is formed in the center of the cover plate 24, an opening 24a is formed.
- a temperature sensor 25 is disposed on the surface of the surface heater 23 on the cover plate 24 side.
- the detection unit 25 a of the temperature sensor 25 is sandwiched between two thermal diffusion sheets 29.
- the heat diffusion sheet 29 is disposed at a position facing the opening 24 a of the cover plate 24.
- the thermal diffusion sheet 29 is preferably the same size as the inspection chip, and is not less than the outer diameter of the inspection chip and not more than the opening 24a.
- a recess is formed on the other surface 21 b of the Peltier element 21. Holes are formed in the heat conductive adhesive transfer tape 28, the surface heater 23, and the two heat diffusion sheets 29.
- the recess of the Peltier element 21, the hole of the heat conductive adhesive transfer tape 28, the hole of the surface heater 23, and the hole of the two heat diffusion sheets 29 can be used for positioning using a pin at the time of assembly.
- the fan 26 is disposed to face the fin surface of the heat sink 22. According to the present embodiment, by using the surface heater 23, heat storage due to heating can be reduced, and a temperature change in a short time can be realized.
- the temperature sensor 25 is not limited to directly detecting the temperature of the inspection chip. As in the present embodiment, the temperature sensor 25 detects the temperature of the surface heater 23 and indirectly detects the temperature of the inspection chip. May be.
- the temperature sensor 25 preferably includes two thermocouples. As described above, the temperature sensor 25 is constituted by a plurality of thermocouples, and a plurality of circuits are provided in parallel, thereby preventing the control unit from running away.
- FIG. 5A is a perspective view showing a thermocycling portion of the thermocycling inspection apparatus
- FIG. 5B is a perspective view showing a state where a chip holder is placed on the thermocycling portion.
- the cover plate 24 covers the surface heater 23 and the Peltier element 21, and the holder accommodating space 10 is formed above and around the cover plate 24 so as to cover the cover plate 24.
- the chip holder 50 is disposed in the holder housing space 10.
- FIG. 6A is a photograph showing the mounting of the chip holder to the thermocycling inspection apparatus
- FIG. 6B is an enlarged perspective view of the main part showing the mounting of the chip holder to the thermocycling inspection apparatus.
- FIG. 6 shows a state where the holder presser lid 40 is opened.
- a transparent substrate 43 and a locking member 44 are provided on the holder holding space 10 side of the holder pressing lid 40.
- the transparent substrate 43 covers the fluorescence detection window 41 and presses the chip holder 50 when the holder pressing cover 40 is closed.
- the holder pressing lid 40 is closed, the holder pressing lid 40 is maintained closed by the lock member 44.
- FIG. 7A is an exploded perspective view of the chip holder used in the thermocycling inspection apparatus
- FIG. 7B is a perspective view of the chip holder
- FIG. 7C is a side sectional view of the chip holder.
- the chip holder 50 according to the present embodiment includes a chip storage tray 51 for storing the inspection chip 60, a holder 52 for holding the chip storage tray 51 in the center, and the inspection chip 60 stored in the chip storage tray 51 for the chip storage tray 51. And a chip presser 53 that presses against the tip.
- the chip receiving tray 51 is formed of a mounting surface 51a on which the inspection chip 60 is mounted and a wall surface 51b that covers the outer periphery of the mounting surface 51a.
- the wall surface 51b is formed in a mortar shape so that the upper side is wide.
- the chip receiving tray 51 is formed in a concave shape by the mounting surface 51a and the wall surface 51b.
- the upper surface 52a of the holder 52 is formed with a ring-shaped recess 52b, a positioning recess 52c, and a fixing hole 52d.
- the ring-shaped recess 52b is formed on the outer periphery of the chip receiving tray 51, the positioning recess 52c is continuous with the ring-shaped recess 52b, and the fixing hole 52d is formed in a part of the positioning recess 52c.
- the tip presser 53 is formed of a ring portion 53a, a positioning leg portion 53b, a fixing projection 53c, and a tip pressing leg portion 53d.
- the ring portion 53a is attached to the ring-shaped recess 52b
- the positioning leg portion 53b is attached to the positioning recess 52c
- the fixing protrusion 53c is attached to the fixing hole 52d.
- the chip pressing member 53 is positioned on the holder 52 by mounting the ring portion 53a in the ring-shaped recess 52b and mounting the positioning leg portion 53b in the positioning recess 52c. Further, the chip pressing member 53 is fixed to the holder 52 by fitting the fixing protrusion 53 c into the fixing hole 52 d.
- the tip pressing leg portion 53d includes a horizontal member 53d1 horizontally extending inward from the ring portion 53a, and a vertical member 53d2 vertically extending from the tip of the horizontal member 53d1 toward the placement surface 51a.
- a protrusion 53d3 protruding upward is provided on the top end of the horizontal member 53d1.
- the upper surface of the chip pressing member 53 excluding the protrusion 53d3 and the upper surface 52a of the holder 52 form the same plane. Therefore, when the transparent substrate 43 shown in FIG. 7C is brought into contact with the upper surface 52a of the holder 52, the transparent substrate 43 presses the protrusion 53d3.
- the tip of the horizontal member 53d1 can be bent by the elasticity of the horizontal member 53d1, and the transparent substrate 43 presses the projection 53d3, so that the vertical member 53d2 presses the test chip 60 against the mounting surface 51a of the chip receiving tray 51. .
- the adhesion between the chip receiving tray 51 and the surface heater 23 is increased, and thus the heat of the surface heater 23 can be easily transmitted to the chip receiving tray 51. And the thermal responsiveness of the chip
- tip accommodating tray 51 can be improved.
- the test chip 60 is pressed against the chip receiving tray 51 by the chip pressing member 53, so that the adhesion between the test chip 60 and the chip receiving tray 51 is increased. Heat can be easily transferred to the inspection chip 60, and the thermal responsiveness of the inspection chip 60 can be improved.
- the chip holding tray 51 is held by the holder 52 and the chip pressing member 53 is positioned, so that the chip pressing member 53 reliably presses the inspection chip 60 onto the chip receiving tray 51. It is possible to prevent the inspection chip 60 from being damaged.
- a positioning projection 51c is formed on the mounting surface 51a of the chip receiving tray 51, and a positioning recess 61 corresponding to the positioning projection 51c is formed on the inspection chip 60.
- the inspection chip 60 can be accurately positioned on the chip receiving tray 51 by the positioning protrusion 51c and the positioning recess 61, the heating and cooling of the inspection chip 60 can be performed stably, and imaging can be performed accurately.
- the chip receiving tray 51 is made of a material having a higher thermal conductivity than the holder 52.
- the chip receiving tray 51 is made of a metal material such as aluminum, iron, or copper, heat conductive resin, or aluminum nitride having a higher thermal conductivity than the resin of the holder 52. Ceramics with high heat conductivity are used.
- the inspection chip 60 can be quickly heated and cooled, while the holder 52 has a thermal conductivity.
- the thermal conductivity By using a low material, heat diffusion to the holder 52 can be prevented, and the thermal response of the inspection chip 60 can be improved.
- a sample introduction port 62 is formed at the center of the inspection chip 60.
- a recess 51 d is provided in the center of the chip receiving tray 51.
- a protrusion protruding toward the thermocycling unit 20 is formed at the center of the recess 51d. This protrusion is formed by a nozzle part when the chip receiving tray 51 is injection molded.
- the protrusions are formed in the concave portion of the Peltier element 21, the hole of the heat conductive adhesive transfer tape 28, the hole of the surface heater 23, and the two heat diffusion sheets 29. Arranged in the hole. Therefore, the protrusion is not pressed by the thermocycling unit 20. That is, the inspection chip 60 is not pressed by the recess 51d, and the inspection chip 60 can be prevented from being damaged.
- FIG. 8 shows the appearance of a test chip according to an embodiment of the present invention
- FIG. 8 (a) is a plan view
- FIG. 8 (b) is a side view
- FIG. 8 (c) shows a part of a sample channel.
- FIG. in the inspection chip 60 a sample introduction port 62 formed in the center and a plurality of sample flow paths 63 extending radially from the sample introduction port 62 are formed.
- the inspection chip 60 can be configured by bonding a first substrate 60a, a second substrate 60b, and a third substrate 60c.
- the first substrate 60 a has a sample introduction port 62
- the second substrate 60 b has a sample flow path 63
- the third substrate 60 c has a sample discharge port 64.
- the first substrate 60a, the second substrate 60b, and the third substrate 60c are made of glass or plastic. As glass, silica glass can be used, and other glass and synthetic resin materials can also be used.
- At least one of the first substrate 60a and the third substrate 60c is made of a light transmissive material, and the light transmissive material is preferably a transparent material.
- the sample introduction port 62 is formed as a hole penetrating the front and back of the first substrate 60a
- the sample flow path 63 is formed as a hole penetrating the front and back of the second substrate 60b and a slit extending radially from the hole.
- 64 is formed as a hole penetrating the front and back of the third substrate 60c.
- a case where a large number of sample flow paths 63 are formed by eight slits is shown, and the eight slits are arranged at equal intervals in the radial direction with the hole formed in the central portion as the center. Yes.
- the hole diameter of the sample discharge port 64 is formed to be the same as the hole diameter of the sample introduction port 62, and the hole diameters of the sample discharge port 64 and the sample introduction port 62 are larger than the width of the slit, and further, the second substrate 60b. It is preferable to form larger than the hole of the center part.
- the inspection chip 60 forms eight sample flow paths 63 around the sample introduction port 62 and the sample discharge port 64.
- the eight sample channels 63 are radially arranged with the same length centering on the sample introduction port 62 and the sample discharge port 64, and the respective outer peripheral end portions are open ports.
- the sample channel 63 becomes a square hollow groove having four corners by the first substrate 60a and the third substrate 60c. By forming four sharp (unrounded) corners in this way, the reagent C can be reliably fixed to the sample channel 63.
- the slit depth of the sample channel 63 (the thickness of the second substrate 60b) larger than the slit width, it is possible to reliably discriminate even a weak fluorescent reaction.
- FIG. 9 is a perspective view of a reagent coating device suitable for the test chip according to the present embodiment.
- the reagent coating device 70 has a plurality of reagent pools 71 on the outer peripheral portion, a space 72 in which the test chip 60 can be stacked on the inner peripheral portion, and a reagent supply port 73 for supplying a reagent introduced from the reagent pool 71 on the inner peripheral surface. have. Since the test chip 60 according to the present embodiment has eight sample flow paths 63, eight reagent pools 71 and eight reagent supply ports 73 are provided.
- Reagents supplied from the reagent pool 71 are introduced by capillary action from the opening of the sample channel 63 through the respective reagent supply ports 73. That is, when a reagent is brought into contact with the open port of the sample channel 63, the reagent actively flows into the sample channel 63 due to capillary action, and due to the surface tension acting at the ends facing the sample inlet 62 and the sample outlet 64. The sample channel 63 is surely filled with the reagent. When the sample channel 63 is dried with the reagent filled, the reagent is fixed in the rectangular hollow groove. The reagent is fixed to the four corners of the rectangular hollow groove, or is fixed in a mesh form in the rectangular hollow groove.
- a different reagent is introduced and fixed for each sample channel 63.
- the reagents are sequentially introduced into the respective sample channels 63, or different reagents are introduced into all the sample channels 63 at the same time. After introducing the reagent into all the sample channels 63, the reagent is fixed by drying.
- the matrix for example, at least one of polyethylene glycol, glycerol, polysaccharides, proteins, surfactants, inorganic salts, or a mixture thereof is used as long as it does not affect the subsequent reaction. Can do.
- the test chip 60 accommodated in the chip holder 50 shown in FIG. 7 is obtained by fixing a reagent to the sample channel 63.
- the chip holder 50 shown in FIG. 7 is set in the thermocycling inspection apparatus shown in FIGS. 1 to 3 after introducing the sample liquid (sample solution) to be measured into the inspection chip 60 as described below.
- FIG. 10 is an explanatory view showing the process of introducing the sample solution into the chip holder according to this embodiment.
- the collected specimen is added to the nucleic acid extract, and the nucleic acid is extracted by heating and ultrasonic disruption.
- a sample reagent D is prepared by mixing a detection reagent with the extracted nucleic acid.
- FIG. 10A shows a step of dropping the sample solution D onto the chip holder 50.
- the sample solution is introduced from the sample introduction port 62 by capillary action.
- FIG. 10B when the sample solution D is brought into contact with the sample introduction port 62, the sample solution D actively flows into the sample channel 63 due to capillary action, and at the opening of the sample channel 63.
- the sample solution D is reliably filled in the sample channel 63 by the surface tension that acts. As described with reference to FIG. 7, since the recess 51 d is provided at the center of the chip receiving tray 51, the sample solution D injected from the sample introduction port 62 can be prevented from flowing out to the chip receiving tray 51.
- FIG. 10C shows a process of introducing oil (mineral oil) E into the chip receiving tray 51 in order to prevent evaporation and drying of the sample solution D. If oil is added, both ends of the flow path applied to the inspection chip 60 can be closed with mineral oil E. The solution in the oil-sealed channel in this way does not evaporate and is not dried even if the temperature change is repeated. As shown in FIG.
- a transparent film 54 is stuck on the upper surface 52 a of the holder 52 to prevent the oil E added to the chip receiving tray 51 from spilling. According to the present embodiment, by sticking the transparent film 54 to the holder 52, leakage of the oil E added to the chip receiving tray 51 can be prevented, and handling of the chip holder 50 can be facilitated.
- FIG. 11 is a block diagram for controlling the thermocycling inspection apparatus according to the present embodiment
- FIG. 12 is a graph showing a temperature change of the inspection chip.
- the thermocycling unit 20 includes a Peltier element 21, a surface heater 23, a temperature sensor 25, and a control means 80.
- the control means 80 includes a control unit 81 that controls the temperature of the Peltier element 21 and the surface heater 23, a storage unit 82 that stores a set temperature and a set time, and a timer unit 83 that measures time.
- the surface heater 23 heats the inspection chip 60, and the Peltier element 21 cools the surface heater 23.
- the surface heater 23 and the Peltier element are detected so that the detected temperature detected by the temperature sensor 25 periodically repeats the first set temperature T1 and the second set temperature T2 lower than the first set temperature T1. 21 is controlled.
- the surface heater 23 is turned off and the Peltier element 21 is turned on.
- the surface heater 23 is turned on at time t1, and the surface heater 23 is turned off at time t2 when the temperature sensor 25 detects the first set temperature T1. Simultaneously with time t2 when the surface heater 23 is turned off, or with a slight time lag from the time t2, the Peltier element 21 is turned on.
- the predetermined time S1 is short, the Peltier element 21 is turned on simultaneously with the time t2, and when the predetermined time S1 is long, the Peltier element 21 is turned on with a delay from the time t2.
- inspection chip 60 falls rapidly by turning off the surface heater 23 and turning on the Peltier device 21 (R2).
- the Peltier element 21 is turned off.
- the controller 81 when the detected temperature detected by the temperature sensor 25 detects the second set temperature T2, the surface heater 23 is set so that the detected temperature becomes the second set temperature T2 with the Peltier element 21 in the OFF state.
- the second set temperature T2 is maintained for a predetermined time S2 by ON / OFF and feedback control.
- the predetermined time S2 is stored in the storage unit 82.
- the time measuring unit 83 starts measuring time, and when the time measuring unit 83 measures the predetermined time S2, the control unit 81 Then, the surface heater 23 is turned on to start the second cycle.
- the inspection chip 60 is heated by the surface heater 23 and the surface heater 23 is cooled by the Peltier element 21, so that the transition from the first set temperature T1 to the second set temperature T2 is particularly quickly performed.
- the polymerase chain reaction can be performed in a short time.
- the transition from the first set temperature T1 to the second set temperature T2 can be quickly performed not only by turning off the surface heater 23 but also by forcibly cooling by the Peltier element 21. Can do.
- the second setting is performed by feedback-controlling the surface heater 23 with the Peltier element 21 turned off. Since the temperature T2 is maintained for a predetermined time S2, hunting can be reduced and stable control can be performed.
- FIG. 13 is a perspective view showing the configuration of the main part in the housing of the thermocycling inspection apparatus according to the present embodiment
- FIG. 14 is a side view showing the main part of the thermocycling inspection apparatus
- FIG. 15 is an external view of the thermocycling inspection apparatus.
- FIG. 13 and 14 show a state in which the outer cover that covers the housing is removed.
- description is abbreviate
- the inside of the housing 1 is divided into a front space A and a rear space B by a partition plate X.
- the front space A is divided into a lower front space A1 and an upper front space A2 by a partition plate Y.
- the holder housing space 10 In the lower front space A1, the holder housing space 10, the thermocycling unit 20, the illumination LED 33, the tip of the camera lens 32, and the holder pressing lid 40 are housed.
- the upper front space A ⁇ b> 2 accommodates the camera 31, a portion excluding the tip of the camera lens 32, and the holding material 34.
- the rear space B accommodates a printed circuit board (control unit) 80a that controls the Peltier element and the surface heater based on the detected temperature detected by the temperature sensor.
- the printed circuit board 80a is preferably attached to the partition plate X at a position where a space is interposed, particularly to the rear outer cover 1b.
- a heat sink exhaust fan 7 for discharging the air in the lower front space A1 is provided on an outer cover (not shown) forming the lower front space A1.
- the heat sink exhaust fan 7 is disposed at the same height as the heat sink 22 or higher than the heat sink 22. By disposing the heat sink exhaust fan 7 on the upper part of the lower front space A1, the high-temperature air in the lower front space A1 can be efficiently discharged.
- the heat sink exhaust fan 7 is located at a position where the virtual axis of the rotation axis (fan center) of the heat sink exhaust fan 7 does not pass through the center of the fluorescence detection window (not shown) of the holder presser lid 40, more preferably
- the shaft center is provided at a position that does not pass through the projection surface of the fluorescence detection window of the holder pressing lid 40. That is, by moving the heat sink exhaust fan 7 away from the fluorescence detection window, light from the outside of the housing 1 due to the opening of the heat sink exhaust fan 7 is less incident on the holder accommodating space 10, and the inside of the holder accommodating space 10. Can be turned into a dark room.
- a cooling fan 5 that discharges the air in the rear space B is provided on an outer cover (not shown) that forms the rear space B.
- the cooling fan 5 is disposed on the printed circuit board 80a or at a position higher than the printed circuit board 80a.
- the cooling fan 5 can be efficiently exhausted from the high-temperature air in the rear space B by being arranged in the upper part of the rear space B.
- the housing 1 has a front outer cover 1 f and a front door 2 on the front surface, a rear side outer cover 1 sb and a front side outer cover 1 sf on both sides, and an upper surface outer cover 1 t on the upper surface.
- the lower surface is covered with a lower outer cover 1c and the rear surface is covered with a rear outer cover 1b.
- a rear space intake port 8 is provided below the outer cover that forms the rear space B, in particular, below the rear side surface outer cover 1 sb.
- the air absorbed by the heat sink 22 is forcibly discharged out of the housing 1 by the heat sink exhaust fan 7. Therefore, the cooling effect of the heat sink 22 can be enhanced and the temperature in the front space A can be kept constant. Moreover, it can prevent the inside of upper front space A2 becoming high temperature.
- air is sucked into the housing 1 from the rear space intake port 8 by the cooling fan 5. The air sucked into the rear space B is discharged out of the housing 1 from the suction cooling fan 5.
- thermocycling unit 20 is disposed on the Peltier element 21, the heat sink 22 disposed on one surface 21 a of the Peltier element 21, and the other surface 21 b of the Peltier element 21.
- a surface heater 23 and a cover plate 24 that covers the surface heater 23 and the other surface 21 b of the Peltier element 21 are provided.
- the holder housing space 10 is formed so as to cover the cover plate 24, and the cover plate 24 has an opening through which the chip receiving tray 51 of the chip holder 50 can be brought into contact with the surface heater 23. 24a is formed, and the inspection chip 60 accommodated in the chip accommodating tray 51 is heated by the surface heater 23.
- the Peltier element 21 can be controlled at a stable temperature by the heat sink 22 disposed on one surface 21 a of the Peltier element 21, the inspection chip 60 can be heated by the surface heater 23, and the other surface 21 b of the Peltier element 21.
- the surface heater 23 By arranging the surface heater 23 on the surface, the surface heater 23 can be cooled by the Peltier element 21, so that a short-term periodic temperature change can be realized and the polymerase chain reaction can be performed stably.
- the temperature sensor 25 is disposed between the surface heater 23 and the chip receiving tray 51, so that the temperature of the inspection chip 60 can be detected more accurately and the polymerase chain reaction can be stabilized. Can be done.
- the chip holder 50 of the present invention is provided with the recess 51 d in the center of the chip receiving tray 51, it is possible to prevent the sample liquid injected from the sample introduction port 62 from flowing out to the chip receiving tray 51.
- the inspection chip 60 in which the reagent is fixed to the sample channel 63 is accommodated in the chip holder 50, but the inspection chip 60 in which the reagent is not fixed can also be used.
- thermocycling inspection apparatus and the inspection chip of the present invention it is possible to perform the sample collection and result determination within 15 minutes.
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Abstract
Description
また、他の検査チップとして、基板上に並列若しくは直列に接続される複数の溝が形成され、互いに異なる化学修飾が施されたキャピラリーが複数の溝にそれぞれ埋設され、これらの埋設された複数のキャピラリーに流体を供給し検出データを取得することができるものを提案している(特許文献2)。
更に、一片が100ミクロン程度の角を有する方形中空溝である試料流路を簡易な方法で製造できる検査チップであり、試料流路に試料溶液を導入しやすく、更には多種類のマイクロ化学反応場を同時に一つで行える検査チップを提案している(特許文献3)
その他として、この種の検査チップの構造や製造方法としては、特許文献4から特許文献7に開示されている。
しかし、この特徴を活用するためには、この検査チップを用いることができるサーモサイクリング検査装置を提供する必要がある。
請求項2記載の本発明は、請求項1に記載のサーモサイクリング検査装置において、前記サーモサイクリング部は、ペルチェ素子と、前記ペルチェ素子の一方の面に配置するヒートシンクと、前記ペルチェ素子の他方の面に配置する面ヒータと、前記面ヒータ及び前記ペルチェ素子の前記他方の面を覆うカバー板とを有し、前記カバー板を覆うように前記ホルダー収容空間が形成され、前記カバー板には、前記チップホルダーのチップ収容受け皿を前記面ヒータに当接させることができる開口部が形成され、前記チップ収容受け皿に収容されている前記検査チップを前記面ヒータで加熱することを特徴とする。
請求項3記載の本発明は、請求項2に記載のサーモサイクリング検査装置において、前記面ヒータと前記チップ収容受け皿との間に温度センサを配置したことを特徴とする。
請求項4記載の本発明は、請求項2に記載のサーモサイクリング検査装置において、前記ホルダー収容空間に配置する前記チップホルダーを覆うホルダー押え蓋を設け、前記ホルダー押え蓋には蛍光検出窓が形成され、前記ホルダー押え蓋の前記ホルダー収容空間側に透明基板を設け、前記透明基板によって、前記蛍光検出窓を覆うとともに前記チップホルダーを押圧することを特徴とする。
請求項5記載の本発明は、請求項1に記載のサーモサイクリング検査装置において、前記サーモサイクリング部は、ペルチェ素子と、面ヒータと、前記検査チップの温度を検出する温度センサと、前記ペルチェ素子及び前記面ヒータを温度制御する制御部とを有し、前記制御部では、前記面ヒータによって前記検査チップを加熱し、前記ペルチェ素子によって前記面ヒータを冷却し、前記温度センサで検出される検出温度が、第1設定温度と、前記第1設定温度より低い第2設定温度とを周期的に繰り返すように、前記面ヒータと前記ペルチェ素子を制御することを特徴とする。
請求項6記載の本発明は、請求項5に記載のサーモサイクリング検査装置において、前記制御部では、前記温度センサで検出される前記検出温度が、前記第1設定温度を検出すると、前記面ヒータをOFFとし、前記ペルチェ素子をONとすることを特徴とする。
請求項7記載の本発明は、請求項5に記載のサーモサイクリング検査装置において、前記制御部では、前記温度センサで検出される前記検出温度が、前記第2設定温度を検出すると、前記ペルチェ素子をOFFの状態で、前記検出温度が前記第2設定温度となるように前記面ヒータをフィードバック制御することで、前記第2設定温度を所定時間維持することを特徴とする。
請求項8記載の本発明のサーモサイクリング検査装置に用いるチップホルダーは、請求項1に記載のサーモサイクリング検査装置に用いるチップホルダーであって、前記検査チップを収容するチップ収容受け皿と、前記チップ収容受け皿を中央部に保持するホルダーと、前記チップ収容受け皿に収容した前記検査チップを前記チップ収容受け皿に押圧するチップ押え材とを有し、前記チップ押え材が前記ホルダーによって位置決めされることを特徴とする。
請求項9記載の本発明のチップホルダーは、検査チップには、中央に形成された試料導入口と、前記試料導入口から放射状に延びた複数の試料流路とが形成され、前記試料流路に試薬を固定した前記検査チップを収容するチップホルダーであって、前記検査チップを収容するチップ収容受け皿と、前記チップ収容受け皿を中央部に保持するホルダーと、前記チップ収容受け皿に収容した前記検査チップを前記チップ収容受け皿に押圧するチップ押え材とを有し、前記チップ押え材が前記ホルダーによって位置決めされることを特徴とする。
請求項10記載の本発明は、請求項9に記載のチップホルダーにおいて、前記チップ収容受け皿には位置決め突起を形成し、前記検査チップには、前記位置決め突起に対応する位置決め凹部を形成したことを特徴とする。
請求項11記載の本発明は、請求項9に記載のチップホルダーにおいて、前記チップ収容受け皿を、前記ホルダーよりも熱伝導率が高い材料としたことを特徴とする。
請求項12記載の本発明は、請求項9に記載のチップホルダーにおいて、前記チップ収容受け皿の中央に凹部を設けたことを特徴とする。
請求項13記載の本発明は、請求項9に記載のチップホルダーにおいて、前記ホルダーに貼付し、前記チップ収容受け皿に添加するオイルのこぼれを防止する透明フィルムを備えたことを特徴とする。
請求項14記載の本発明のサーモサイクリング検査装置は、チップホルダーを収容するホルダー収容空間と、前記検査チップを加熱し冷却するサーモサイクリング部と、前記検査チップを撮影する検出器と、前記ホルダー収容空間に配置する前記チップホルダーを覆うホルダー押え蓋とを備え、前記サーモサイクリング部は、ペルチェ素子と、前記ペルチェ素子の一方の面に配置するヒートシンクと、前記ペルチェ素子の他方の面に配置する面ヒータと、前記面ヒータ及び前記ペルチェ素子の前記他方の面を覆うカバー板とを有し、前記カバー板を覆うように前記ホルダー収容空間が形成され、前記カバー板には開口部が形成され、前記ホルダー押え蓋には、前記検出器によって前記検査チップを撮影する蛍光検出窓を形成したことを特徴とする。
請求項15記載の本発明のチップホルダーは、検査チップを収容するチップ収容受け皿と、前記チップ収容受け皿を中央部に保持するホルダーと、前記チップ収容受け皿に収容した前記検査チップを前記チップ収容受け皿に押圧するチップ押え材とを有し、前記チップ収容受け皿の中央に凹部を設けたことを特徴とする。
20 サーモサイクリング部
21 ペルチェ素子
21a 一方の面
21b 他方の面
22 ヒートシンク
23 面ヒータ
24 カバー板
24a 開口部
25 温度センサ
30 検出器
40 ホルダー押え蓋
41 蛍光検出窓
43 透明基板
50 チップホルダー
51 チップ収容受け皿
51a載置面
51b 壁面
51c 位置決め突起
51d 凹部
52 ホルダー
53 チップ押え材
54 透明フィルム
60 検査チップ
61 位置決め凹部
62 試料導入口
63 試料流路
C 試薬
D 試料溶液
E オイル(鉱物油)
図1は本実施例によるサーモサイクリング検査装置の要部構成を示す斜視図、図2は同サーモサイクリング検査装置の主要部分を示す斜視図、図3は図2に示す同サーモサイクリング検査装置の主要部分の一部を動かした状態を示す斜視図である。
ホルダー収容空間10は、サーモサイクリング部20の上方に形成される。ホルダー収容空間10の上方には、ホルダー収容空間10に配置するチップホルダーを覆うホルダー押え蓋40を設けている。
筐体1は、前面には前扉2を、内部両側面又は内部底面には一対のガイダー3を有している。一対のスライドレール4は、一対のガイダー3を摺動する。
ホルダー収容空間10、サーモサイクリング部20、及びホルダー押え蓋40は、一対のスライドレール4によって、筐体1の前面から前方へ引き出すことができる。
図2及び図3に示すように、筐体1内は、前方空間Aと後方空間Bとに区分けされている。ホルダー収容空間10、サーモサイクリング部20、及びホルダー押え蓋40は、前方空間Aに収容される。後方空間Bには、温度センサで検出される検出温度に基づいてペルチェ素子及び面ヒータを制御する制御部を収容する。
ホルダー押え蓋40には、蛍光検出窓41が形成されている。ホルダー押え蓋40には、トルクヒンジ42を設けている。
図3に示すように、前方空間Aは、筐体1の底面に吸気口6を形成している。
冷却ファン5の駆動によって、吸気口6から筐体1内に吸入される空気は、前方空間Aに設けた排気口から排出される。
カメラ31は保持材34によって筐体1の上部に保持される。カメラ31は下部にカメラレンズ32を保持している。
一対の照明用LED33は、カメラレンズ32の両側に配置され、前方空間Aの上部に取り付けられる。
カメラレンズ32の光軸は、蛍光検出窓41の中心に一致し、一対の照明用LED33の光軸は、蛍光検出窓41に向けられている。
そして、ホルダー収容空間10は、検出器30の光軸と、検査チップの中央に形成された試料導入口とが一致するように形成している。
本実施例によれば、ホルダー収容空間10の一方に配置したサーモサイクリング部20によって検査チップを加熱し冷却することで、ポリメラーゼ連鎖反応を行わせることができ、ホルダー収容空間10の他方に配置した検出器30によって検査チップを撮影することができ、ポリメラーゼ連鎖反応を行わせた検査チップに撮影による検査が行え、POCT(リアルタイム検査)を小型の装置で実現できる。
サーモサイクリング部20は、ペルチェ素子21と、ペルチェ素子21の一方の面21aに配置するヒートシンク22と、ペルチェ素子21の他方の面21bに配置する面ヒータ23と、面ヒータ23及びペルチェ素子21の他方の面21bを覆うカバー板24と、検査チップの温度を検出する温度センサ25と、ヒートシンク22の熱交換性能を増大させるファン26とを有している。
ペルチェ素子21の他方の面21bには凹部を形成している。熱伝導性接着剤転写テープ28、面ヒータ23、及び2枚の熱拡散シート29には孔を形成している。ペルチェ素子21の凹部、熱伝導性接着剤転写テープ28の孔、面ヒータ23の孔、及び2枚の熱拡散シート29の孔は組立時にピンを用いて位置決めとして利用できる。
本実施例によれば、面ヒータ23を用いることで、加熱による蓄熱を低減することができ、短時間での温度変化を実現できる。
なお、温度センサ25は検査チップの温度を直接検出する場合に限らず、本実施例のように、温度センサ25で面ヒータ23の温度を検知して、検査チップの温度を間接的に検知してもよい。
図5(a)に示すように、カバー板24は、面ヒータ23及びペルチェ素子21を覆い、カバー板24の上方及び周囲に、カバー板24を覆うようにホルダー収容空間10が形成される。
そして、図5(b)に示すように、ホルダー収容空間10にチップホルダー50が配置される。
図6では、ホルダー押え蓋40を開いた状態を示している。
ホルダー押え蓋40のホルダー収容空間10側には、透明基板43と、ロック部材44を設けている。
透明基板43は、蛍光検出窓41を覆うとともに、ホルダー押え蓋40を閉じた状態ではチップホルダー50を押圧する。ホルダー押え蓋40を閉じた状態では、ホルダー押え蓋40はロック部材44によって閉じた状態が維持される。
本実施例によるチップホルダー50は、検査チップ60を収容するチップ収容受け皿51と、チップ収容受け皿51を中央部に保持するホルダー52と、チップ収容受け皿51に収容した検査チップ60をチップ収容受け皿51に押圧するチップ押え材53とを有する。
リング部53aがリング状凹部52bに装着され、位置決め用脚部53bが位置決め用凹部52cに装着されることで、チップ押え材53はホルダー52に位置決めされる。また、固定用突起53cが固定用孔52dに嵌合することで、チップ押え材53はホルダー52に固定される。
チップ押圧用脚部53dは、リング部53aから内方に水平に延出させた水平部材53d1と、水平部材53d1の先端から載置面51aに向かって鉛直に延出させた鉛直部材53d2とで構成され、水平部材53d1の先端上面には上方へ突出させた突起53d3を設けている。
チップ押え材53がホルダー52に固定された状態では、突起53d3を除くチップ押え材53の上面とホルダー52の上面52aとは同一平面を形成する。従って、図7(c)に示す透明基板43をホルダー52の上面52aに当接させると、透明基板43は突起53d3を押圧する。
水平部材53d1の弾性によって水平部材53d1の先端は撓むことができ、透明基板43が突起53d3を押圧することで、鉛直部材53d2は検査チップ60をチップ収容受け皿51の載置面51aに押圧する。
また、本実施例によれば、チップ押え材53によって検査チップ60をチップ収容受け皿51に押圧することで、検査チップ60とチップ収容受け皿51との密着性が高まり、よって、チップ収容受け皿51の熱を検査チップ60に伝えやすくし、検査チップ60の熱応答性を高めることができる。
また、本実施例によれば、ホルダー52によって、チップ収容受け皿51を保持し、チップ押え材53を位置決めすることで、チップ押え材53による検査チップ60のチップ収容受け皿51への押圧を確実に行え、検査チップ60の破損を防止できる。
本実施例によれば、位置決め突起51cと位置決め凹部61によって、検査チップ60をチップ収容受け皿51に正確に位置決めでき、検査チップ60の加熱冷却を安定して行え、撮影を正確に行える。
本実施例によれば、チップ収容受け皿51又は載置面51aに熱伝導率の高い材料を用いることで検査チップ60への加熱冷却を速やかに行うことができ、一方でホルダー52に熱伝導率の低い材料を用いることでホルダー52への熱拡散を防止し、検査チップ60の熱応答性を高めることができる。
検査チップ60には、中央に形成された試料導入口62と、試料導入口62から放射状に延びた複数の試料流路63とが形成されている。
図8(b)の側面図に示すように、検査チップ60は、第1基板60aと第2基板60bと第3基板60cとを貼り合わせて構成することができる。
第1基板60aは試料導入口62を、第2基板60bは試料流路63を、第3基板60cは試料排出口64を有する。第1基板60a、第2基板60b、及び第3基板60cは、ガラスまたはプラスチックで構成される。ガラスとしては、シリカガラスを用いることができ、他のガラスや合成樹脂材なども用いることができる。少なくとも第1基板60a及び第3基板60cの一方は、透光性材料で構成し、更に、透光性材料は透明な材料であることが好ましい。
試料導入口62は、第1基板60aの表裏を貫通する孔として形成され、試料流路63は第2基板60bの表裏を貫通する孔及びこの孔から放射状に延びるスリットとして形成され、試料排出口64は第3基板60cの表裏を貫通する孔として形成されている。本実施例では、8本のスリットによって多数の試料流路63を形成する場合を示しており、8本のスリットは、中央部に形成した孔を中心として、径方向に等間隔に配置されている。また、試料排出口64の孔径は、試料導入口62の孔径と同じ大きさで形成し、試料排出口64及び試料導入口62の孔径は、スリットの幅よりも大きく、更には第2基板60bの中央部の孔よりも大きく形成することが好ましい。
8本の試料流路63は、試料導入口62及び試料排出口64を中心として放射状に同一長さで配置され、それぞれの外周側端部は開放口となっている。
図8(c)に示すように、試料流路63は、第1基板60a及び第3基板60cによって、4つの角を有する方形中空溝となる。このように鋭利な(丸みのない)4つの角を形成することで、試薬Cを試料流路63に確実に固定することができる。
試料流路63のスリット深さ(第2基板60bの板厚)をスリット幅よりも大きくすることで、弱い蛍光反応でも確実に判別することができる。
試薬塗り込み装置70は、外周部に複数の試薬プール71を、内周部に検査チップ60を積層できる空間72を、内周面に試薬プール71から導入される試薬を供給する試薬供給口73を有している。
本実施例による検査チップ60は、8本の試料流路63を有しているため、試薬プール71及び試薬供給口73は8つ設けている。
すなわち、試料流路63の開放口に試薬を接触させると、試薬は毛細管現象により試料流路63内に能動的に流れ込み、試料導入口62及び試料排出口64に臨む端部で働く表面張力により試料流路63内に確実に試薬が満たされる。
そして、試料流路63内に試薬を満たした状態で乾燥させると、方形中空溝内に試薬が固定される。試薬は、方形中空溝の4つの角に固定され、又は方形中空溝内に網目状に固定される。
本実施例では、それぞれの試料流路63毎に、異なる試薬を導入して固着させる。この場合には、それぞれの試料流路63に順に試薬を導入するか、同時に全ての試料流路63に異なる試薬を導入する。全ての試料流路63に試薬を導入した後に、乾燥によって試薬を固定する。
図7に示すチップホルダー50に収容する検査チップ60は、試料流路63に試薬を固定したものである。
図7に示すチップホルダー50は、以下に説明するように測定対象とする検体液(試料溶液)を検査チップ60に導入した後に、図1~図3に示すサーモサイクリング検査装置にセットする。
採取した検体を核酸抽出液に添加し、加熱及び超音波破砕により核酸を抽出する。抽出した核酸に検出試薬を混合して試料溶液Dを作る。
図10(a)は、この試料溶液Dをチップホルダー50に滴下する工程を示している。
試料溶液は、試料導入口62から毛細管現象により導入する。
図10(b)に示すように、試料溶液Dを試料導入口62に接触させると、試料溶液Dは、毛細管現象により試料流路63内に能動的に流れ込み、試料流路63の開放口において働く表面張力により試料流路63内に確実に試料溶液Dが満たされる。
なお、図7で説明したように、チップ収容受け皿51の中央に凹部51dを設けているため、試料導入口62から注入される試料溶液Dがチップ収容受け皿51に流出することを防止できる。
図10(c)は、試料溶液Dの蒸発乾燥を防止するために、チップ収容受け皿51にオイル(鉱物油)Eを導入する工程を示している。オイルを添加すれば、検査チップ60に施された流路の両端を鉱物油Eで塞ぐことができる。このようにしてオイルシーリングされた流路内の溶液は蒸発せず、温度変化を繰り返しても乾燥されることはない。
図10(d)に示すように、チップ収容受け皿51にオイルEを導入した後に、透明フィルム54をホルダー52の上面52aに貼付し、チップ収容受け皿51に添加したオイルEのこぼれを防止する。
本実施例によれば、透明フィルム54をホルダー52に貼付することで、チップ収容受け皿51に添加するオイルEの漏出を防止でき、チップホルダー50の扱いを容易にすることができる。
サーモサイクリング部20は、ペルチェ素子21と、面ヒータ23と、温度センサ25と、制御手段80とを備えている。
制御手段80は、ペルチェ素子21及び面ヒータ23を温度制御する制御部81と、設定温度や設定時間を記憶する記憶部82と、時間を計時する計時部83とを備えている。
面ヒータ23は検査チップ60を加熱し、ペルチェ素子21は面ヒータ23を冷却する。
制御部81では、温度センサ25で検出される検出温度が、第1設定温度T1を検出すると、面ヒータ23をOFFとし、ペルチェ素子21をONとする。
制御部81では、面ヒータ23をOFF、ペルチェ素子21をONとすることで、検査チップ60の温度は急激に低下する(R2)。温度センサ25が第2設定温度T2を検出した時刻t3においてペルチェ素子21をOFFとする。
制御部81では、温度センサ25で検出される検出温度が、第2設定温度T2を検出すると、ペルチェ素子21をOFFの状態で、検出温度が第2設定温度T2となるように面ヒータ23をON/OFFしてフィードバック制御することで、第2設定温度T2を所定時間S2維持する。ここで、所定時間S2は記憶部82に記憶されており、第2設定温度T2を検出することで計時部83で計時を開始し、計時部83で所定時間S2を計時すると、制御部81では、面ヒータ23をONとして2サイクル目を開始する。
また、本実施例によれば、第1設定温度T1から第2設定温度T2への移行を、面ヒータ23のOFFだけでなく、ペルチェ素子21によって強制的に冷却することで、速やかに行うことができる。
また、本実施例によれば、温度センサ25で検出される検出温度が、第2設定温度T2を検出すると、ペルチェ素子21をOFFの状態で面ヒータ23をフィードバック制御することで、第2設定温度T2を所定時間S2維持するため、ハンチングを小さくして安定した制御を行える。
図13は本実施例によるサーモサイクリング検査装置の筐体内の要部構成配置を示す斜視図、図14は同サーモサイクリング検査装置の主要部分を示す側面図、図15は同サーモサイクリング検査装置の外観を示す斜視図である。図13及び図14は筐体を覆う外カバーを取り外した状態を示している。なお、上記実施例と同一構成、同一機能については説明を省略し、本実施例の特徴的な構成について以下に説明する。
下部前方空間A1には、ホルダー収容空間10、サーモサイクリング部20、照明用LED33、カメラレンズ32の先端部、及びホルダー押え蓋40が収容される。上部前方空間A2には、カメラ31、カメラレンズ32の先端部を除く部分、及び保持材34が収容される。後方空間Bには、温度センサで検出される検出温度に基づいてペルチェ素子及び面ヒータを制御するプリント基板(制御部)80aが収容される。プリント基板80aは、仕切板Xとは空間を介在させた位置、特に後面外カバー1bに取り付けることが好ましい。
後方空間Bを形成する外カバー(図示せず)には、後方空間B内の空気を排出する冷却ファン5を設けている。冷却ファン5は、プリント基板80aの上部か、プリント基板80aよりも高い位置に配置する。冷却ファン5は、後方空間Bの上部に配置することで、後方空間B内の高温空気を効率よく排出できる。
図15に示すように、後方空間Bを形成する外カバー、特に後方側面外カバー1sbの下方には、後方空間用吸気口8を設けている。
この構成によって、下部前方空間A1では、ファン26によって吸気口6から筐体1内に空気が吸入される。吸気口6から吸入された空気は、ヒートシンク22で吸熱される。ヒートシンク22で吸熱された空気は、ヒートシンク用排気ファン7によって筐体1外へ強制排出される。従って、ヒートシンク22の冷却効果を高めるとともに、前方空間A内の温度を一定に保持することができる。また、上部前方空間A2内が高温になることを防止できる。
後方空間Bでは、冷却ファン5によって後方空間用吸気口8から筐体1内に空気が吸入される。後方空間B内に吸入された空気は、吸入冷却ファン5から筐体1外へ排出される。
本発明によれば、ペルチェ素子21の一方の面21aに配置するヒートシンク22でペルチェ素子21を安定した温度に制御でき、面ヒータ23で検査チップ60を加熱でき、ペルチェ素子21の他方の面21bに面ヒータ23を配置することで、面ヒータ23の冷却をペルチェ素子21で行えるため、短時間の周期的な温度変化を実現でき、ポリメラーゼ連鎖反応を安定して行わせることができる。
また、本発明のサーモサイクリング検査装置は、面ヒータ23とチップ収容受け皿51との間に温度センサ25を配置しているので、より正確に検査チップ60の温度を検出でき、ポリメラーゼ連鎖反応を安定して行わせることができる。
また、本発明のチップホルダー50は、チップ収容受け皿51の中央に凹部51dを設けているので、試料導入口62から注入される検体液がチップ収容受け皿51に流出することを防止できる。
なお、本発明では、試料流路63に試薬を固定した検査チップ60をチップホルダー50に収容したが、試薬を固定しない検査チップ60を用いることもできる。
Claims (15)
- 検査チップには、中央に形成された試料導入口と、前記試料導入口から放射状に延びた複数の試料流路とが形成され、
前記試料流路に試薬を固定した前記検査チップをチップホルダーに収容し、
前記チップホルダーを用いて、ポリメラーゼ連鎖反応による検体検査を行うサーモサイクリング検査装置であって、
前記チップホルダーを収容するホルダー収容空間と、
前記検査チップを加熱し冷却するサーモサイクリング部と、
前記検査チップを撮影する検出器と
を備え、
前記サーモサイクリング部による加熱冷却時又は前記検出器での撮影時には、
前記ホルダー収容空間の一方に前記サーモサイクリング部が配置され、
前記ホルダー収容空間の他方に前記検出器が配置され、
前記検出器の光軸と前記試料導入口とが一致するように、前記ホルダー収容空間を形成した
ことを特徴とするサーモサイクリング検査装置。 - 前記サーモサイクリング部は、
ペルチェ素子と、
前記ペルチェ素子の一方の面に配置するヒートシンクと、
前記ペルチェ素子の他方の面に配置する面ヒータと、
前記面ヒータ及び前記ペルチェ素子の前記他方の面を覆うカバー板と
を有し、
前記カバー板を覆うように前記ホルダー収容空間が形成され、
前記カバー板には、前記チップホルダーのチップ収容受け皿を前記面ヒータに当接させることができる開口部が形成され、
前記チップ収容受け皿に収容されている前記検査チップを前記面ヒータで加熱する
ことを特徴とする請求項1に記載のサーモサイクリング検査装置。 - 前記面ヒータと前記チップ収容受け皿との間に温度センサを配置した
ことを特徴とする請求項2に記載のサーモサイクリング検査装置。 - 前記ホルダー収容空間に配置する前記チップホルダーを覆うホルダー押え蓋を設け、
前記ホルダー押え蓋には蛍光検出窓が形成され、
前記ホルダー押え蓋の前記ホルダー収容空間側に透明基板を設け、
前記透明基板によって、前記蛍光検出窓を覆うとともに前記チップホルダーを押圧する
ことを特徴とする請求項2に記載のサーモサイクリング検査装置。 - 前記サーモサイクリング部は、
ペルチェ素子と、
面ヒータと、
前記検査チップの温度を検出する温度センサと、
前記ペルチェ素子及び前記面ヒータを温度制御する制御部と
を有し、
前記制御部では、
前記面ヒータによって前記検査チップを加熱し、
前記ペルチェ素子によって前記面ヒータを冷却し、
前記温度センサで検出される検出温度が、第1設定温度と、前記第1設定温度より低い第2設定温度とを周期的に繰り返すように、前記面ヒータと前記ペルチェ素子を制御する
ことを特徴とする請求項1に記載のサーモサイクリング検査装置。 - 前記制御部では、
前記温度センサで検出される前記検出温度が、前記第1設定温度を検出すると、前記面ヒータをOFFとし、前記ペルチェ素子をONとする
ことを特徴とする請求項5に記載のサーモサイクリング検査装置。 - 前記制御部では、
前記温度センサで検出される前記検出温度が、前記第2設定温度を検出すると、前記ペルチェ素子をOFFの状態で、前記検出温度が前記第2設定温度となるように前記面ヒータをフィードバック制御することで、前記第2設定温度を所定時間維持する
ことを特徴とする請求項5に記載のサーモサイクリング検査装置。 - 請求項1に記載のサーモサイクリング検査装置に用いるチップホルダーであって、
前記検査チップを収容するチップ収容受け皿と、
前記チップ収容受け皿を中央部に保持するホルダーと、
前記チップ収容受け皿に収容した前記検査チップを前記チップ収容受け皿に押圧するチップ押え材と
を有し、
前記チップ押え材が前記ホルダーによって位置決めされる
ことを特徴とするサーモサイクリング検査装置に用いるチップホルダー。 - 検査チップには、中央に形成された試料導入口と、前記試料導入口から放射状に延びた複数の試料流路とが形成され、
前記試料流路に試薬を固定した前記検査チップを収容するチップホルダーであって、
前記検査チップを収容するチップ収容受け皿と、
前記チップ収容受け皿を中央部に保持するホルダーと、
前記チップ収容受け皿に収容した前記検査チップを前記チップ収容受け皿に押圧するチップ押え材と
を有し、
前記チップ押え材が前記ホルダーによって位置決めされる
ことを特徴とするチップホルダー。 - 前記チップ収容受け皿には位置決め突起を形成し、
前記検査チップには、前記位置決め突起に対応する位置決め凹部を形成した
ことを特徴とする請求項9に記載のチップホルダー。 - 前記チップ収容受け皿を、前記ホルダーよりも熱伝導率が高い材料とした
ことを特徴とする請求項9に記載のチップホルダー。 - 前記チップ収容受け皿の中央に凹部を設けた
ことを特徴とする請求項9に記載のチップホルダー。 - 前記ホルダーに貼付し、前記チップ収容受け皿に添加するオイルのこぼれを防止する透明フィルムを備えた
ことを特徴とする請求項9に記載のチップホルダー。 - チップホルダーを収容するホルダー収容空間と、
前記検査チップを加熱し冷却するサーモサイクリング部と、
前記検査チップを撮影する検出器と、
前記ホルダー収容空間に配置する前記チップホルダーを覆うホルダー押え蓋と
を備え、
前記サーモサイクリング部は、
ペルチェ素子と、
前記ペルチェ素子の一方の面に配置するヒートシンクと、
前記ペルチェ素子の他方の面に配置する面ヒータと、
前記面ヒータ及び前記ペルチェ素子の前記他方の面を覆うカバー板と
を有し、
前記カバー板を覆うように前記ホルダー収容空間が形成され、
前記カバー板には開口部が形成され、
前記ホルダー押え蓋には、前記検出器によって前記検査チップを撮影する蛍光検出窓を形成した
ことを特徴とするサーモサイクリング検査装置。 - 検査チップを収容するチップ収容受け皿と、
前記チップ収容受け皿を中央部に保持するホルダーと、
前記チップ収容受け皿に収容した前記検査チップを前記チップ収容受け皿に押圧するチップ押え材と
を有し、
前記チップ収容受け皿の中央に凹部を設けた
ことを特徴とするチップホルダー。
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JP7071738B2 (ja) | 2022-05-19 |
JPWO2017175841A1 (ja) | 2019-02-14 |
US11958052B2 (en) | 2024-04-16 |
KR20180128054A (ko) | 2018-11-30 |
KR102456030B1 (ko) | 2022-10-19 |
US20190099757A1 (en) | 2019-04-04 |
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