WO2016132793A1 - 検出方法および反応装置 - Google Patents
検出方法および反応装置 Download PDFInfo
- Publication number
- WO2016132793A1 WO2016132793A1 PCT/JP2016/051343 JP2016051343W WO2016132793A1 WO 2016132793 A1 WO2016132793 A1 WO 2016132793A1 JP 2016051343 W JP2016051343 W JP 2016051343W WO 2016132793 A1 WO2016132793 A1 WO 2016132793A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tip
- pipette
- pipette tip
- position information
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
- G01N35/1011—Control of the position or alignment of the transfer device
-
- 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
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00594—Quality control, including calibration or testing of components of the analyser
- G01N35/00613—Quality control
- G01N35/00623—Quality control of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
- G01N35/1016—Control of the volume dispensed or introduced
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/14—Process control and prevention of errors
- B01L2200/143—Quality control, feedback systems
- B01L2200/146—Employing pressure sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/14—Process control and prevention of errors
- B01L2200/148—Specific details about calibrations
-
- 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
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics
Definitions
- the present invention relates to a detection method for detecting the tip position of a pipette tip attached to a pipette nozzle for sucking or discharging a liquid.
- the present invention also relates to a reaction apparatus for reacting two or more substances in the reaction chip using the pipette chip and a reaction chip having a storage unit for storing a liquid.
- SPR surface plasmon resonance
- a detection chip having a prism made of a dielectric material, a metal film disposed on the prism, and a flow path member that is disposed on the metal film and forms a liquid flow path is used.
- a capturing body for capturing the substance to be detected is disposed on the metal film.
- the flow path member has an injection part for injecting a liquid such as a specimen containing a substance to be detected into the liquid flow path, and a discharge part for discharging the liquid from the liquid flow path.
- the inlet of the inlet and the outlet of the outlet are formed in a complementary shape with respect to the tip of the pipette tip.
- the tip of the pipette tip when the tip of the pipette tip is inserted into the inlet or outlet, the tip of the pipette tip and the inlet or outlet are fitted. Thereby, the tip of the pipette tip is arranged at a fixed position with respect to the bottom surface of the liquid channel, and the amount of liquid in the liquid channel can be controlled with high accuracy.
- the tip of the pipette chip is arranged near the flow path in the detection chip or the bottom of the well.
- the liquid is repeatedly sucked into the pipette tip and discharged out of the pipette tip.
- it is necessary to accurately control the positional relationship between the liquid channel or the bottom of the well and the tip of the pipette tip.
- the liquid in the liquid flow path or well in the liquid removal step The remaining amount needs to be kept to a minimum and constant. Also in this case, it is necessary to control the position of the tip of the pipette tip with high accuracy.
- a detection method is a detection method for detecting a tip position of a pipette tip attached to a pipette nozzle for sucking or discharging a liquid
- a reaction apparatus uses a pipette tip attached to a pipette nozzle and a reaction tip having an accommodating portion for accommodating a liquid.
- An air pressure sensor that measures the air pressure in the pipette tip, and includes a position information acquisition unit that acquires position information of a tip of the pipette tip, and a pipette moving unit that moves the pipette, and the position information acquisition unit includes:
- the pipette moving part changes the distance between the tip of the pipette tip and the solid first reference part, and the pipette moves forward.
- the first position information of the tip of the pipette tip with respect to the first reference portion is acquired by measuring the change in air pressure in the pipette tip when gas is sucked or discharged from the tip of the pipette tip.
- the pipette moving unit moves the pipette based on the first position information in order to cause two or more substances to react in the reaction chip after the position information acquiring unit acquires the first position information.
- the position of the tip of the pipette tip is accurately controlled without increasing the manufacturing cost of the pipette tip and the reaction tip (accommodating tip), thereby increasing the amount of liquid in the reaction tip (accommodating tip).
- the accuracy can be controlled.
- the presence or amount of a substance to be detected can be detected with high accuracy.
- FIG. 1 is a schematic diagram showing the configuration of the SPFS apparatus according to the first embodiment.
- 2A to 2C are diagrams showing the configuration of the detection chip.
- FIG. 3 is a schematic cross-sectional view of another form of the detection chip.
- FIG. 4 is a flowchart showing the operation of the SPFS apparatus according to the first embodiment.
- FIG. 5A is a flowchart showing the contents of the process of acquiring the first position information
- FIG. 5B is a flowchart showing the contents of the process of acquiring the second position information.
- FIG. 6A is a diagram showing a partial configuration of the SPFS apparatus according to Embodiment 2
- FIG. 6B is a flowchart showing the contents of the process of acquiring the first position information in Embodiment 2.
- FIG. 1 is a schematic diagram showing the configuration of the SPFS apparatus according to the first embodiment.
- 2A to 2C are diagrams showing the configuration of the detection chip.
- FIG. 3 is a schematic cross-sectional view of another
- FIG. 7A is a diagram showing a partial configuration of the SPFS apparatus according to Embodiment 3
- FIG. 7B is a flowchart showing the contents of the process of acquiring the first position information in Embodiment 3.
- FIG. 8A is a diagram illustrating a partial configuration of the SPFS apparatus according to the fourth embodiment
- FIG. 8B is a flowchart illustrating the content of the process of acquiring the first position information in the fourth embodiment.
- FIG. 9A is a diagram illustrating a partial configuration of the SPFS apparatus according to the fifth embodiment
- FIG. 9B is a flowchart illustrating the contents of the process of acquiring the first position information in the fifth embodiment.
- FIG. 10A is a schematic diagram for explaining the experimental apparatus, and FIG.
- FIG. 10B is a flowchart showing the contents of the process of Experiment 1.
- FIG. FIG. 11 is a schematic graph showing the relationship between the elapsed time when the pressure is detected by the air pressure sensor and the output value of the air pressure sensor.
- FIG. 12 is a graph showing the relationship between the distance from the bottom of the flow path of the pipette tip and the amount of remaining liquid in the flow path.
- SPFS apparatus surface plasmon excitation enhanced fluorescence analyzer
- FIG. 1 is a schematic diagram showing a configuration of a surface plasmon excitation enhanced fluorescence analyzer (SPFS apparatus) 100 according to Embodiment 1 of the present invention.
- SPFS apparatus surface plasmon excitation enhanced fluorescence analyzer
- the SPFS device (reaction device) 100 includes a liquid feeding unit 110 including a pipette 111 and a pipette moving unit 112, a transport unit 120 including a tip holder 121, a position information acquisition unit 130, a light The irradiation unit 140, the light detection unit 150, and the control unit 160 are included.
- the SPFS device 100 is used in a state where the detection chip (accommodating chip, reaction chip) 10 is mounted on the chip holder 121. Therefore, the detection chip 10 will be described first, and then each component of the SPFS device 100 will be described.
- FIG. 2 is a diagram illustrating a configuration of the detection chip 10.
- 2A is a plan view of the detection chip 10
- FIG. 2B is a cross-sectional view taken along line AA shown in FIG. 2A
- FIG. 2C is a cross-sectional view taken along line BB shown in FIG. 2A.
- FIG. 3 is a schematic cross-sectional view showing another form of the detection chip 10.
- the detection chip 10 includes a prism 20 including an incident surface 21, a film formation surface 22 and an output surface 23, a metal film 30, a flow path including a reaction region 41 and a reagent storage region 42. And a lid 40.
- the metal film 30 and the flow path lid 40 are disposed on the film formation surface 22 of the prism 20.
- the prism 20, the metal film 30, and the channel lid 40 form a channel 60 (accommodating portion) through which liquid flows.
- the flow path 60 is disposed directly or via the metal film 30 on the film formation surface 22 of the prism 20.
- the detection chip 10 may be a reusable chip or a disposable chip. In the present embodiment, the detection chip 10 is a disposable chip.
- liquid flowing in the flow path 60 examples include a specimen (for example, blood, serum, plasma, urine, nasal fluid, saliva, semen, etc.) containing a substance to be detected, and a capturing body labeled with a fluorescent substance. Labeling solution, washing solution, etc. are included.
- the prism 20 is made of an insulator that is transparent to the excitation light ⁇ . As described above, the prism 20 has the entrance surface 21, the film formation surface 22, and the exit surface 23. The incident surface 21 allows the excitation light ⁇ from the light irradiation unit 140 to enter the prism 20. A metal film 30 is disposed on the film formation surface 22. In the present embodiment, the excitation light ⁇ incident on the inside of the prism 20 is applied to the metal film 30 where the substance to be detected is captured. The excitation light ⁇ is reflected on the back surface of the metal film 30 to become reflected light ⁇ . More specifically, the excitation light ⁇ is reflected at the interface (deposition surface 22) between the prism 20 and the metal film 30 to become reflected light ⁇ . The emission surface 23 emits the reflected light ⁇ to the outside of the prism 20.
- the shape of the prism 20 is not particularly limited.
- the prism 20 is a pillar having a trapezoidal bottom surface.
- the surface corresponding to one base of the trapezoid is the film formation surface 22, the surface corresponding to one leg is the incident surface 21, and the surface corresponding to the other leg is the emission surface 23.
- the trapezoid serving as the bottom surface is preferably an isosceles trapezoid. Thereby, the entrance surface 21 and the exit surface 23 are symmetric, and the S wave component of the excitation light ⁇ is less likely to stay in the prism 20.
- the incident surface 21 is formed so that the excitation light ⁇ does not return to the light irradiation unit 140.
- the light source of the excitation light ⁇ is a laser diode (hereinafter also referred to as “LD”)
- LD laser diode
- the angle of the incident surface 21 is set so that the excitation light ⁇ does not enter the incident surface 21 perpendicularly in the scanning range centered on the enhancement angle.
- the “enhancement angle” means scattered light having the same wavelength as the excitation light ⁇ emitted above the detection chip 10 when the incident angle of the excitation light ⁇ with respect to the metal film 30 is scanned (hereinafter referred to as “plasmon scattered light”). This means the angle of incidence when the amount of ⁇ is maximized.
- the angle between the incident surface 21 and the film formation surface 22 and the angle formed between the film formation surface 22 and the emission surface 23 are both about 80 °.
- the enhancement angle is generally determined by the design of the detection chip 10.
- the design factors are the refractive index of the prism 20, the refractive index of the metal film 30, the film thickness of the metal film 30, the extinction coefficient of the metal film 30, the wavelength of the excitation light ⁇ , and the like.
- the enhancement angle is shifted by the substance to be detected trapped on the metal film 30, but the amount is less than several degrees.
- the prism 20 has a considerable amount of birefringence.
- the material of the prism 20 include insulating resin and glass.
- the material of the prism 20 is preferably a resin having a refractive index of 1.4 to 1.6 and a small birefringence.
- the metal film 30 is disposed so as to be exposed to at least a part of the flow path 60 on the film formation surface 22 of the prism 20.
- the metal film 30 causes an interaction (SPR) between the photon of the excitation light ⁇ incident on the film formation surface 22 under total reflection conditions and the free electrons in the metal film 30, and is locally on the surface of the metal film 30.
- SPR interaction
- In-situ light commonly referred to as “evanescent light” or “near-field light” can be generated.
- the material of the metal film 30 is not particularly limited as long as it is a metal capable of generating SPR.
- Examples of the material of the metal film 30 include gold, silver, copper, aluminum, and alloys thereof.
- the metal film 30 is a gold thin film.
- the method for forming the metal film 30 is not particularly limited. Examples of the method for forming the metal film 30 include sputtering, vapor deposition, and plating.
- the thickness of the metal film 30 is not particularly limited, but is preferably in the range of 30 to 70 nm.
- a capturing body for capturing a substance to be detected is fixed on the surface of the metal film 30.
- the substance to be detected can be selectively detected.
- the capturing body is uniformly fixed to a predetermined region on the metal film 30.
- the region where the capturing body is fixed serves as a reaction field where a primary reaction and a secondary reaction described later occur.
- the capturing body fixed to the metal film 30 is exposed in the flow path 60.
- the type of capturing body is not particularly limited as long as it can capture the substance to be detected.
- the capturing body is an antibody or a fragment thereof that can specifically bind to the substance to be detected.
- the channel lid 40 is disposed on the film formation surface 22.
- the flow path lid 40 has the reaction region 41 and the reagent storage region 42.
- the reaction region 41 is a region for performing a primary reaction and a secondary reaction described later.
- the reagent storage area 42 is an area in which a labeling solution used for the secondary reaction, a cleaning solution used for cleaning after each reaction, and the like are stored.
- a flow channel groove 43 serving as a flow channel (accommodating portion) 60 is formed on the back surface of the reaction region 41 in the flow channel lid 40.
- a first through hole 44 serving as the injection portion 70 and a second through hole 45 serving as the storage portion 80 are opened on the front surface and the back surface of the reaction region 41, respectively.
- Both ends of the flow channel 43 are connected to the first through hole 44 and the second through hole 45, respectively.
- a concave portion (accommodating portion) 46 opened on the surface is formed in the reagent storage area 42.
- the number of the recessed parts 46 is not specifically limited. In the present embodiment, the number of recesses 46 is two.
- a labeling solution used for the secondary reaction, a cleaning solution, and the like are stored in the recess 46.
- the channel groove 43, the first through hole 44, and the second through hole 45 become the channel 60, the injection unit 70, and the storage unit 80, respectively, by stacking the prism 20, the metal film 30, and the channel lid 40 in this order. .
- the channel lid 40 is preferably made of a material that is transparent to the fluorescence ⁇ emitted from the metal film 30 and the plasmon scattered light ⁇ .
- An example of the material of the flow path lid 40 includes a resin.
- the flow path cover 40 may be formed of an opaque material as long as the portion from which the fluorescent ⁇ and the plasmon scattered light ⁇ are extracted is transparent to the fluorescent ⁇ and the plasmon scattered light ⁇ .
- the channel lid 40 is bonded to the prism 20 or the metal film 30 by, for example, adhesion using a double-sided tape or an adhesive, laser welding, ultrasonic welding, or pressure bonding using a clamp member.
- the detection chip 10 ′ may have a well 60 ′ instead of the flow path 60.
- liquid is injected or removed from the opening of the well (housing portion) 60 ′.
- the excitation light ⁇ enters the prism 20 at the incident surface 21.
- the excitation light ⁇ that has entered the prism 20 is applied to the metal film 30 at a total reflection angle (an angle at which SPR occurs).
- a total reflection angle an angle at which SPR occurs.
- This localized field light excites a fluorescent substance that labels the substance to be detected present on the metal film 30 and emits fluorescence ⁇ .
- the SPFS device 100 detects the presence or amount of the substance to be detected by measuring the amount of fluorescence ⁇ emitted from the fluorescent substance.
- the SPFS device 100 includes the liquid feeding unit 110, the transport unit 120, the position information acquisition unit 130, the light irradiation unit 140, the light detection unit 150, and the control unit 160.
- the detection chip 10 can be held by the chip holder 121 of the transport unit 120.
- the liquid feeding unit 110 includes a pipette 111, a pipette moving unit 112, and a liquid feeding pump drive mechanism 113.
- the liquid feeding unit 110 injects a specimen into the flow path 60 of the detection chip 10 held by the chip holder 121, or a liquid such as a labeling solution or a cleaning liquid stored in the reagent storage region 42 of the detection chip 10 in the reaction region. 41 in the channel 60. Further, the liquid feeding unit 110 also discharges the liquid from the flow path 60 and stirs the liquid in the flow path 60.
- the liquid feeding unit 110 is used in a state where the pipette tip 170 is attached to the pipette nozzle 116 of the pipette 111. It should be noted that the pipette tip 170 is preferably replaceable from the viewpoint of preventing contamination of impurities.
- the pipette 111 sucks the liquid when injecting the liquid into the flow path 60 or removing the liquid from the flow path 60.
- the pipette 111 includes a syringe 114, a plunger 115 that can reciprocate inside the syringe 114, and a pipette nozzle 116 connected to the syringe 114. Further, the pipette 111 can quantitatively suck and discharge the liquid by the reciprocating motion of the plunger 115. Thereby, the pipette 111 can inject liquid into the flow path 60 or remove the liquid from the flow path 60. Moreover, the pipette 111 can stir the liquid in the flow path 60 by repeating suction and discharge of the liquid.
- the pipette moving unit 112 moves the pipette nozzle 116 in order to suck liquid into the pipette tip 170 and discharge the liquid from the pipette tip 170.
- the pipette moving unit 112 freely moves the pipette nozzle 116 in the axial direction (for example, the vertical direction) of the pipette nozzle 116.
- the pipette moving unit 112 includes, for example, a solenoid actuator and a stepping motor.
- the liquid feed pump drive mechanism 113 moves the plunger 115 to suck the external liquid into the pipette tip 170 or discharge the liquid inside the pipette tip 170 to the outside.
- the liquid feed pump drive mechanism 113 includes a device for reciprocating the plunger 115 such as a stepping motor.
- the stepping motor is preferable from the viewpoint of managing the remaining liquid amount of the detection chip 10 because it can manage the liquid feeding amount and the liquid feeding speed of the pipette 111.
- the liquid feeding unit 110 sucks various liquids from the recess 46 and injects them into the flow channel 60 of the detection chip 10.
- the reciprocating operation of the plunger 115 with respect to the syringe 114 is repeated, thereby liquid inside the flow channel 60 in the detection chip 10.
- Reciprocates, and the liquid in the flow path 60 is agitated.
- the liquid in the channel 60 is again sucked by the pipette 111 and discharged to a waste liquid tank or the like not shown.
- reaction with various liquids, washing, and the like can be performed, and a detection target substance labeled with a fluorescent substance can be arranged in the reaction field in the flow path 60.
- the transport unit 120 transports the detection chip 10 to the detection position or the liquid feeding position, and holds the detection chip 10.
- the “detection position” is a position where the light irradiation unit 140 irradiates the detection chip 10 with the excitation light ⁇ , and the light detection unit 150 detects the fluorescence ⁇ or the plasmon scattered light ⁇ generated accordingly.
- the “liquid feeding position” is a position where the liquid feeding unit 110 injects liquid into the flow channel 60 of the detection chip 10 or removes the liquid in the flow channel 60 of the detection chip 10.
- the transport unit 120 includes a chip holder 121 and a transport stage 122.
- the chip holder 121 is fixed to the transfer stage 122 and holds the detection chip 10 in a detachable manner.
- the shape of the chip holder 121 is not particularly limited as long as it can hold the detection chip 10 and does not interfere with the optical paths of the excitation light ⁇ , fluorescence ⁇ , and plasmon scattered light ⁇ .
- the shape of the chip holder 121 is configured so that the detection chip 10 can be held with the flow path lid 40 interposed therebetween.
- the transfer stage 122 moves the chip holder 121 in one direction and in the opposite direction (left and right direction on the paper surface of FIG. 1).
- the transport stage 122 also has a shape that does not interfere with the optical paths of the excitation light ⁇ , fluorescence ⁇ , and plasmon scattered light ⁇ .
- the transfer stage 122 is driven by, for example, a stepping motor.
- the position information acquisition unit 130 acquires first position information (hereinafter also simply referred to as “first position information”) regarding the position of the tip of the pipette tip 170 with respect to the solid first reference unit 180a.
- the position information acquisition unit 130 includes an air pressure sensor 131.
- the air pressure sensor 131 is connected between the pipette nozzle 116 and the syringe 114.
- the type of the air pressure sensor 131 is not particularly limited as long as the air pressure (pressure) in the pipette tip 170 can be measured. Examples of the type of the air pressure sensor 131 include a mechanical sensor using a Bourdon tube, an electronic sensor using a semiconductor, and the like.
- the first position information is the air pressure in the pipette tip 170 when gas is sucked or discharged from the tip of the pipette tip 170 by changing the distance between the tip of the pipette tip 170 and the first reference portion 180a. Is obtained by measuring the change in the air pressure sensor 131. More specifically, first, the first pressure in the pipette tip 170 when gas is sucked or discharged from the tip of the pipette tip 170 with the tip of the pipette tip 170 separated from the solid first reference portion 180a. Measure.
- the “first reference portion” means a reference position of the tip of the pipette tip 170 with respect to the solid.
- the first reference unit 180a is not particularly limited as long as it is solid and its position is specified with high accuracy, and may be a part of the detection chip 10 or a part of the SPFS device 100. Also good.
- Examples of the first reference portion 180a included in the detection chip 10 include the channel cover 40, the seal 50 (see FIG. 9A), the prism 20 (the bottom surface of the channel 60), and the like.
- examples of the first reference unit 180a included in the SPFS apparatus 100 include a transfer stage 122, a chip holder 121, and a placement surface (a portion located below the pipette nozzle 116) on which the transfer stage 122 is arranged in the transfer unit 120. It may be.
- the suction or discharge of the gas at the tip of the pipette tip 170 may be performed continuously or intermittently.
- the gas is also discharged when measuring the second pressure.
- the gas is sucked when the first pressure is measured, the gas is sucked also when the second pressure is measured.
- the position information acquisition unit 130 can also acquire second position information (hereinafter also simply referred to as “second position information”) regarding the position of the tip of the pipette tip 170 with respect to the liquid second reference unit 180b.
- the second position information includes a change in the distance between the tip of the pipette tip 170 and the second reference portion 180b to indicate a change in the air pressure in the pipette tip 170 when the gas is sucked or discharged from the tip of the pipette tip 170. It is acquired by measuring by.
- the tip position of the pipette tip 170 with respect to the second reference portion 180b is detected based on the difference between the third pressure and the fourth pressure.
- the “second reference portion” means a reference position of the tip of the pipette tip 170 with respect to the liquid.
- the second reference portion 180b is not particularly limited as long as it is a liquid and its position is specified with high accuracy.
- Examples of the second reference portion 180b include the liquid level of the liquid stored in the recess 46, the liquid level of the liquid in the flow path 60, and the like.
- the suction or discharge of the gas at the tip of the pipette tip 170 may be performed continuously or intermittently.
- the air pressure (first pressure and second pressure) of the gas sucked or discharged from the tip of the pipette tip 170 in the operation for acquiring the first position information is changed from the tip of the pipette tip 170 in the operation for acquiring the second position information. It is preferable that the pressure is different from the air pressure (third pressure and fourth pressure) of the gas to be sucked or discharged.
- the position information acquisition unit 130 acquires the first position information and the second position information
- the pipette 111 sucks gas from the tip of the pipette tip 170, an operation for acquiring the first position information.
- the air pressures (first pressure and second pressure) of the gas sucked from the tip of the pipette tip 170 in the above are the air pressures (third pressure and fourth pressure) of the gas sucked from the tip of the pipette tip 170 in the operation of acquiring the second position information. Pressure). Further, when the position information acquisition unit 130 acquires the first position information and the second position information, when the pipette 111 discharges gas from the tip of the pipette tip 170, the pipette tip in the operation of acquiring the first position information.
- the air pressures (first pressure and second pressure) of the gas discharged from the tip of 170 are larger than the air pressures (third pressure and fourth pressure) of the gas discharged from the tip of the pipette tip 170 in the operation of acquiring the second position information.
- the absolute values of the gas air pressures (first pressure and second pressure) in the operation for acquiring the first position information are the gas air pressures (third pressure and fourth pressure) in the operation for acquiring the second position information. ) Is greater than the absolute value.
- the light irradiation unit 140 irradiates the excitation light ⁇ toward the incident surface 21 of the detection chip 10 held by the chip holder 121. At the time of measuring the fluorescence ⁇ or the plasmon scattered light ⁇ , the light irradiation unit 140 emits only the P wave toward the incident surface 21 so that the incident angle with respect to the metal film 30 is an angle that causes SPR. .
- the “excitation light” is light that directly or indirectly excites the fluorescent material.
- the excitation light ⁇ is light that generates localized field light on the surface of the metal film 30 that excites the fluorescent material when the metal film 30 is irradiated through the prism 20 at an angle at which SPR occurs.
- the light irradiation unit 140 includes a light source unit 141, an angle adjustment mechanism 142, and a light source control unit 143.
- the light source unit 141 emits the collimated excitation light ⁇ having a constant wavelength and light amount so that the shape of the irradiation spot on the back surface of the metal film 30 is substantially circular.
- the light source unit 141 includes, for example, a light source of excitation light ⁇ , a beam shaping optical system, an APC mechanism, and a temperature adjustment mechanism (all not shown).
- the type of the light source is not particularly limited, and is, for example, a laser diode (LD).
- Other examples of light sources include light emitting diodes, mercury lamps, and other laser light sources.
- the light emitted from the light source is not a beam, the light emitted from the light source is converted into a beam by a lens, a mirror, a slit, or the like.
- the light emitted from the light source is not monochromatic light, the light emitted from the light source is converted into monochromatic light by a diffraction grating or the like.
- the light emitted from the light source is not linearly polarized light, the light emitted from the light source is converted into linearly polarized light by a polarizer or the like.
- the beam shaping optical system includes, for example, a collimator, a band pass filter, a linear polarization filter, a half-wave plate, a slit, and a zoom means.
- the beam shaping optical system may include all of these or a part thereof.
- the collimator collimates the excitation light ⁇ emitted from the light source.
- the band-pass filter turns the excitation light ⁇ emitted from the light source into narrowband light having only the center wavelength. This is because the excitation light ⁇ from the light source has a slight wavelength distribution width.
- the linear polarization filter turns the excitation light ⁇ emitted from the light source into completely linearly polarized light.
- the half-wave plate adjusts the polarization direction of the excitation light ⁇ so that the P-wave component is incident on the metal film 30.
- the slit and zoom means adjust the beam diameter, contour shape, and the like of the excitation light ⁇ so that the shape of the irradiation spot on the back surface of the metal film 30 is a circle of a predetermined size.
- the APC mechanism controls the light source so that the output of the light source is constant. More specifically, the APC mechanism detects the amount of light branched from the excitation light ⁇ with a photodiode (not shown) or the like.
- the APC mechanism controls the input energy by a regression circuit, thereby controlling the output of the light source to be constant.
- the angle adjustment mechanism 142 adjusts the incident angle of the excitation light ⁇ with respect to the metal film 30 (the interface between the prism 20 and the metal film 30 (film formation surface 22)). In order to irradiate the excitation light ⁇ at a predetermined incident angle toward a predetermined position of the metal film 30 via the prism 20, the angle adjustment mechanism 142 relatively places the optical axis of the excitation light ⁇ and the chip holder 121. Rotate.
- the angle adjusting mechanism 142 rotates the light source unit 141 around an axis (axis perpendicular to the paper surface of FIG. 1) orthogonal to the optical axis of the excitation light ⁇ .
- the position of the rotation axis is set so that the position of the irradiation spot on the metal film 30 hardly changes even when the incident angle is scanned.
- the angle at which the amount of plasmon scattered light ⁇ is maximum is the enhancement angle.
- High intensity fluorescence ⁇ can be measured by setting the incident angle of the excitation light ⁇ to the enhancement angle or an angle in the vicinity thereof.
- the basic incident condition of the excitation light ⁇ is determined by the material and shape of the prism 20 of the detection chip 10, the film thickness of the metal film 30, the refractive index of the liquid in the flow channel 60, etc. The optimum incident condition varies slightly depending on the type and amount of the light and the shape error of the prism 20. For this reason, it is preferable to obtain an optimal enhancement angle for each measurement.
- the light source control unit 143 controls various devices included in the light source unit 141 to control the emission of the excitation light ⁇ from the light source unit 141.
- the light source control unit 143 includes, for example, a known computer or microcomputer including an arithmetic device, a control device, a storage device, an input device, and an output device.
- the light detection unit 150 detects the amount of fluorescence ⁇ emitted from the vicinity of the surface of the metal film 30 on the flow path 60 side when the light irradiation unit 140 irradiates the metal film 30 of the detection chip 10 with the excitation light ⁇ . To do. Further, as necessary, the light detection unit 150 also detects plasmon scattered light ⁇ generated by irradiation of the excitation light ⁇ to the metal film 30.
- the light detection unit 150 includes a light receiving unit 151, a position switching mechanism 152, and a sensor control unit 153.
- the light receiving unit 151 is disposed in the normal direction to the surface of the metal film 30 of the detection chip 10.
- the light receiving unit 151 includes a first lens 154, an optical filter 155, a second lens 156, and a light receiving sensor 157.
- the first lens 154 is, for example, a condensing lens, and condenses light emitted from the metal film 30.
- the second lens 156 is an imaging lens, for example, and forms an image of the light collected by the first lens 154 on the light receiving surface of the light receiving sensor 157.
- the optical path between the first lens 154 and the second lens 156 is substantially parallel.
- the optical filter 155 is disposed between the first lens 154 and the second lens 156.
- the optical filter 155 guides only the fluorescence component to the light receiving sensor 157 and removes the excitation light component (plasmon scattered light ⁇ ) in order to detect the fluorescence ⁇ with a high S / N ratio.
- Examples of the optical filter 155 include an excitation light reflection filter, a short wavelength cut filter, and a band pass filter.
- the optical filter 155 is, for example, a filter including a multilayer film that reflects a predetermined light component, or a color glass filter that absorbs a predetermined light component.
- the light receiving sensor 157 detects fluorescence ⁇ and plasmon scattered light ⁇ .
- the light receiving sensor 157 has a high sensitivity capable of detecting weak fluorescence ⁇ from a very small amount of a substance to be detected.
- the light receiving sensor 157 is, for example, a photomultiplier tube (PMT) or an avalanche photodiode (APD).
- the position switching mechanism 152 switches the position of the optical filter 155 on or off the optical path in the light receiving unit 151. Specifically, when the light receiving sensor 157 detects the fluorescence ⁇ , the optical filter 155 is disposed on the optical path of the light receiving unit 151, and when the light receiving sensor 157 detects the plasmon scattered light ⁇ , the optical filter 155 is placed on the light receiving unit 151. Placed outside the optical path.
- the sensor control unit 153 controls detection of an output value of the light receiving sensor 157, management of sensitivity of the light receiving sensor 157 based on the detected output value, change of sensitivity of the light receiving sensor 157 for obtaining an appropriate output value, and the like.
- the sensor control unit 153 includes, for example, a known computer or microcomputer including an arithmetic device, a control device, a storage device, an input device, and an output device.
- the controller 160 controls the liquid feed pump drive mechanism 113, the transport stage 122, the angle adjustment mechanism 142, the light source controller 143, the position switching mechanism 152, and the sensor controller 153.
- the control unit 160 includes, for example, a known computer or microcomputer including an arithmetic device, a control device, a storage device, an input device, and an output device.
- FIG. 4 is a flowchart illustrating an example of an operation procedure of the SPFS apparatus 100.
- FIG. 5A is a flowchart showing the contents of the step of obtaining the first position information (step S120 in FIG. 4), and
- FIG. 5B shows the contents of the step of obtaining the second position information (step S130 in FIG. 4). It is a flowchart.
- the primary antibody is immobilized on the metal film 30 as a capturing body.
- first reference portion 180a is the bottom surface of the channel 60
- second reference portion 180b is the liquid level of the liquid stored in the recess 46 (see FIG. 2B).
- step S110 preparation for measurement is performed (step S110). Specifically, the detection chip 10 is prepared, and the detection chip 10 is installed in the chip holder 121 at the set position of the detection chip 10. A pipette tip 170 is attached to the tip of the pipette nozzle 116.
- the first position information is acquired (step S120).
- the first pressure in the pipette tip 170 is measured (step S121).
- the control unit 160 drives the pipette moving unit 112 to move the tip of the pipette tip 170 directly above the bottom surface (first reference unit 180a) of the flow channel 60.
- the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131.
- a first pressure in the chip 170 is measured.
- the second pressure in the pipette tip 170 is measured (step S122).
- the control unit 160 drives the pipette moving unit 112 to make the tip of the pipette tip 170 the bottom surface of the flow channel 60 (first reference unit 180a) rather than the step of measuring the first pressure (step S121). Move to the side.
- the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. A second pressure in the chip 170 is measured.
- step S123 the difference between the first pressure and the second pressure is obtained (step S123). Specifically, the control unit 160 obtains a difference between the first pressure and the second pressure by subtracting the second pressure (first pressure) from the first pressure (second pressure). At this time, the pipette moving unit 112 is driven until the difference between the first pressure and the second pressure becomes equal to or greater than a predetermined threshold, and the tip of the pipette tip 170 is moved to the bottom surface (first reference portion 180a) side of the flow channel 60. And the step of measuring the second pressure in the pipette tip 170 by the air pressure sensor 131 is repeated.
- the controller 160 determines that the tip of the pipette tip 170 is close to the first reference portion 180a due to the difference between the first pressure and the second pressure, and the pipette tip with respect to the first reference portion 180a.
- the position of the tip of 170 is detected. That is, the control unit 160 acquires the first position information of the tip of the pipette tip 170 with respect to the first reference unit 180a when the air pressure sensor 131 detects the air pressure.
- the air pressure is continuously or intermittently expelled from the tip of the pipette tip 170, and the tip of the pipette tip 170 is brought close to the first reference portion 180a.
- the air pressure in the pipette tip 170 may be measured by the sensor 131. In this case, the air pressure before moving the pipette tip 170 becomes the first pressure. Further, the air pressure in the pipette tip 170 measured by the air pressure sensor 131 while the tip of the pipette tip 170 is brought close to the first reference portion 180a becomes the second pressure. Even in this case, the first position information can be obtained with high accuracy.
- the step of removing the cleaning liquid from the metal film 30 is performed after the first position information is acquired (step S120) and before the step of determining the incident angle of the excitation light ⁇ (step S140).
- step S131 the third pressure in the pipette tip 170 is measured (step S131). Specifically, the control unit 160 drives the pipette moving unit 112 to move the tip of the pipette tip 170 directly above the liquid level (second reference unit 180b) stored in the recess 46. Then, the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. A third pressure in the chip 170 is measured.
- the fourth pressure in the pipette tip 170 is measured (step S132).
- the control unit 160 drives the pipette moving unit 112 to measure the third pressure (step S131), and the liquid surface (first level) of the liquid stored in the recess 46 is more than the tip of the pipette tip 170. 2 Move to the reference part 180b) side.
- the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. A fourth pressure in the chip 170 is measured.
- step S133 the difference between the third pressure and the fourth pressure is obtained (step S133). Specifically, the control unit 160 obtains a difference between the third pressure and the fourth pressure by subtracting the fourth pressure (third pressure) from the third pressure (fourth pressure). And the control part 160 detects the position of the front-end
- the air pressure is continuously and intermittently ejected from the tip of the pipette tip 170, and the tip of the pipette tip 170 is brought close to the second reference portion 180b.
- the pressure in the pipette tip 170 may be measured by the sensor 131. In this case, the pressure before moving the pipette tip 170 is the third pressure. Further, the pressure in the pipette tip 170 measured by the air pressure sensor 131 while the tip of the pipette tip 170 is brought close to the second reference portion 180b becomes the fourth pressure. Even in this case, the second position information can be obtained with high accuracy.
- the order of the step of acquiring the first position information (step S120) and the step of acquiring the second position information (step S130) is not limited to this. That is, after performing the process of acquiring the second position information (process S130), the process of acquiring the first position information (process S120) may be performed. In order to reduce the amount of remaining liquid on the metal film 30, it is preferable to obtain at least the first position information before sending the liquid onto the metal film 30. Further, in order to manage the amount of liquid adhering to the wall surface of the pipette tip 170, it is more preferable to acquire the second position information before sending the liquid.
- the incident angle of the excitation light ⁇ is determined (step S140). Specifically, the control unit 160 operates the transfer stage 122 to move the detection chip 10 to the detection position. The controller 160 drives the sensor controller 153 to detect the plasmon scattered light ⁇ by the light receiving sensor 157 while driving the angle adjusting mechanism 142 to scan the incident angle of the excitation light ⁇ .
- the angle at which the amount of plasmon scattered light ⁇ is maximized is defined as the incident angle (enhancement angle) of the excitation light ⁇ .
- step S150 the detection target substance in the specimen is reacted with the primary antibody (primary reaction; step S150).
- the control unit 160 operates the transport stage 122 to move the container in which the specimen is stored directly below the pipette tip 170. Then, the tip of the pipette tip 170 is moved toward the container in which the specimen is stored, and the specimen is inhaled into the pipette tip 170.
- the controller 160 operates the transfer stage 122 to move the detection chip 10 to the liquid feeding position. Then, the control unit 160 drives the pipette moving unit 112 based on the first position information, moves the tip of the pipette tip 170 into the injection unit 70, and injects the specimen into the flow channel 60.
- the specimen is removed from the flow path 60.
- the tip of the pipette tip 170 is brought close to the bottom surface of the flow channel 60 based on the first position information. Then, the sample is removed from the flow path 60 by inhaling the sample into the pipette tip 170.
- the container in which the specimen is stored may be disposed on the detection chip 10.
- an accommodation hole for accommodating the container is formed in the flow path lid 40 of the detection chip 10.
- the types of the specimen and the substance to be detected are not particularly limited.
- the specimen include body fluids such as blood, serum, plasma, urine, nasal fluid, saliva, semen, and diluted solutions thereof.
- substances to be detected include nucleic acids (such as DNA and RNA), proteins (such as polypeptides and oligopeptides), amino acids, carbohydrates, lipids, and modified molecules thereof.
- the specimen may be reciprocated in the flow path 60 in the primary reaction (step S150).
- the tip of the pipette tip 170 is brought close to the bottom surface of the flow channel 60 based on the first position information.
- the plunger 115 is reciprocated while the position of the tip of the pipette tip 170 is fixed.
- the sample can be reciprocated in the flow path 60 by repeatedly inhaling and discharging the sample with the pipette tip 170.
- the sample is removed from the flow channel 60 by inhaling the sample into the pipette tip 170.
- the metal film 30 is cleaned with a cleaning solution such as a buffer solution.
- the controller 160 moves the tip of the pipette tip 170 toward the cleaning liquid in the recess 46 and causes the cleaning liquid to be sucked into the pipette tip 170.
- the control unit 160 drives the pipette moving unit 112 based on the second position information, moves the tip of the pipette tip 170 into the injection unit 70, and injects the cleaning liquid into the flow channel 60.
- the washing liquid containing the substance that has not bound to the primary antibody is removed from the flow path 60.
- the control unit 160 drives the pipette moving unit 112 to move the tip of the pipette tip 170 to the injection unit 70.
- the tip of the pipette tip 170 is brought close to the bottom surface of the channel 60 to remove the cleaning liquid from the channel 60.
- the tip of the pipette tip 170 is brought close to the prism 20 (metal film 30) based on the first position information, the amount of liquid remaining in the flow path 60 can be minimized.
- the position of the tip of the pipette tip 170 when removing the cleaning liquid is preferably the same as the position of the tip of the pipette tip 170 in the step of removing the specimen from the flow path 60. Thereby, the amount of liquid remaining in the flow path 60 can be made constant.
- the target substance captured on the metal film 30 is labeled with a fluorescent substance (secondary reaction; step S160).
- the control unit 160 moves the tip of the pipette tip 170 toward the concave portion 46 in which a liquid (labeling liquid) containing a capturing body labeled with a fluorescent substance is stored, and labels the pipette tip 170 in the pipette tip 170. Inhale fluid.
- the second position information is specified with high accuracy, the distance between the tip of the pipette tip 170 and the surface of the labeling liquid and the distance between the tip of the pipette tip 170 and the bottom surface of the recess 46 are also high. It can be detected accurately.
- the labeling solution can be appropriately inhaled into the pipette tip 170.
- the control unit 160 drives the pipette moving unit 112 to move the tip of the pipette tip 170 into the injection unit 70 based on the first position information, and injects the labeling solution into the flow channel 60.
- the detection target substance captured on the metal film 30 is labeled with a fluorescent substance by an antigen-antibody reaction.
- the labeling liquid in the flow path 60 is removed, and the inside of the flow path 60 is cleaned with a cleaning liquid.
- the position of the tip of the pipette tip 170 when removing the labeling liquid in the channel 60 is positioned based on the first position information described above. As a result, the amount of liquid remaining in the flow path 60 can be kept to a minimum and constant.
- step S150 the order of the primary reaction (step S150) and the secondary reaction (step S160) is not limited to this.
- a liquid containing these complexes may be provided on the metal film 30 after the substance to be detected is bound to the secondary antibody.
- the specimen and the labeling solution may be provided on the metal film 30 at the same time.
- a substance to be detected is detected (step S170).
- the control unit 160 operates the transfer stage 122 to move the detection chip 10 to the detection position.
- the sensor control unit 153 is driven to drive the metal film 30 (while the light source control unit 143 is driven to irradiate the excitation light ⁇ at a predetermined position of the metal film 30 with the incident angle (enhancement angle) determined in step S120.
- the light receiving sensor 157 is controlled so as to detect the intensity of the fluorescence ⁇ emitted from the surface of the metal film 30 and the vicinity thereof.
- control part 160 may measure a blank value before a secondary reaction (process S160).
- the excitation light ⁇ is irradiated onto the metal film 30 at an enhancement angle, and the detection value of the light receiving sensor 157 is set as a blank value.
- the amount of fluorescence ⁇ indicating the amount of the substance to be detected in the sample is calculated by subtracting the blank value from the detected value of fluorescence ⁇ .
- the SPFS device 100 since the SPFS device 100 according to the present embodiment operates the pipette tip 170 based on the first position information related to the position of the tip of the pipette tip 170, the tip of the pipette tip 170 can be accurately detected.
- the position can be controlled.
- the precision of a detection result can be improved by making constant the residual liquid amount in the flow path 60.
- the first reference portion 180a is used as the bottom surface of the flow channel 60, and the operation with respect to the bottom surface of the flow channel 60 is required to have the highest accuracy.
- the tip of the pipette tip 170 can be controlled with higher accuracy than 5.
- the SPFS device according to the second embodiment is different from the SPFS device 100 according to the first embodiment in the first reference unit 180a. Therefore, the same components as those of the SPFS device 100 according to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.
- FIG. 6A is a diagram illustrating a partial configuration of the SPFS apparatus according to the second embodiment.
- the first reference portion 180a in the second embodiment is the top surface of the detection chip (accommodating chip) 10.
- the first position information of the tip of the pipette tip 170 is acquired from the tip of the pipette tip 170 in a state where the tip of the pipette tip 170 is separated from the solid first reference portion 180a (the top surface of the detection tip 10).
- the first pressure in the pipette tip 170 when the gas is sucked or discharged is measured.
- the first position information of the tip of the pipette tip 170 with respect to the first reference portion 180a is acquired.
- FIG. 6B is a flowchart showing the contents of the process of acquiring the first position information in the second embodiment.
- the control unit 160 drives the pipette moving unit 112 to start the tip of the pipette tip 170. Is moved directly above the top surface of the detection chip 10 (first reference portion 180a). Then, the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. The first pressure in the chip 170 is measured (step S221).
- the control unit 160 drives the pipette moving unit 112 so that the tip of the pipette tip 170 is positioned on the top surface of the detection tip 10 (first reference unit 180a) rather than the step of measuring the first pressure (step S221). ) Move to the side. Then, the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. A second pressure in the chip 170 is measured.
- a difference between the first pressure and the second pressure is obtained (step S223).
- the control unit 160 obtains a difference between the first pressure and the second pressure by subtracting the second pressure (first pressure) from the first pressure (second pressure).
- the control part 160 acquires the 1st position information of the front-end
- the SPFS device according to the second embodiment has the same effects as the SPFS device 100 according to the first embodiment.
- the SPFS device according to the third embodiment is different from the SPFS device 100 according to the first embodiment in the first reference unit 180a. Therefore, the same components as those of the SPFS device 100 according to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.
- FIG. 7A is a diagram illustrating a partial configuration of the SPFS apparatus according to the third embodiment.
- the first reference unit 180a in the third embodiment is a part of the transport stage 122 that transports the detection chip.
- the first position information of the tip of the pipette tip 170 is acquired from the tip of the pipette tip 170 in a state where the tip of the pipette tip 170 is separated from the solid first reference portion 180a (a part of the transport stage 122).
- the first pressure in the pipette tip 170 when the gas is sucked or discharged is measured.
- the second pressure in the pipette tip 170 is measured when gas is sucked or discharged from the tip of the pipette tip 170 in a state where the tip of the pipette tip 170 and the first reference portion 180a are brought close to each other. Finally, based on the difference between the first pressure and the second pressure, the first position information of the tip of the pipette tip 170 with respect to the first reference portion 180a is acquired.
- FIG. 7B is a flowchart showing the contents of the process of acquiring the first position information in the third embodiment.
- the control unit 160 drives the pipette moving unit 112 to start the tip of the pipette tip 170. Is moved directly above the transfer stage 122 (reference unit 180). Then, the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. The first pressure in the chip 170 is measured (step S321).
- the control unit 160 drives the pipette moving unit 112 to move the tip of the pipette tip 170 to the transport stage 122 (reference unit 180) side with respect to the step of measuring the first pressure (step S321). .
- the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131.
- a second pressure in the chip 170 is measured.
- a difference between the first pressure and the second pressure is obtained (step S323).
- the control unit 160 obtains a difference between the first pressure and the second pressure by subtracting the second pressure (first pressure) from the first pressure (second pressure).
- the control part 160 acquires the 1st position information of the front-end
- the SPFS device according to the third embodiment has the same effects as the SPFS device 100 according to the first embodiment.
- the SPFS device according to the fourth embodiment is different from the SPFS device 100 according to the first embodiment in the first reference unit 180a. Therefore, the same components as those of the SPFS device 100 according to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.
- FIG. 8A is a diagram illustrating a partial configuration of the SPFS apparatus according to the fourth embodiment.
- the first reference portion 180a in the fourth embodiment is a part of the arrangement surface 650 on which the conveyance stage 122 that conveys the detection chip 10 that holds the detection chip is arranged.
- the first position information of the tip of the pipette tip 170 is acquired from the tip of the pipette tip 170 in a state where the tip of the pipette tip 170 is separated from the solid first reference portion 180a (a part of the arrangement surface 650).
- the first pressure in the pipette tip 170 when the gas is sucked or discharged is measured.
- the second pressure in the pipette tip 170 is measured when gas is sucked or discharged from the tip of the pipette tip 170 in a state where the tip of the pipette tip 170 and the first reference portion 180a are brought close to each other. Finally, based on the difference between the first pressure and the second pressure, the first position information of the tip of the pipette tip 170 with respect to the first reference portion 180a is acquired.
- FIG. 8B is a flowchart showing the contents of the process of acquiring the first position information in the fourth embodiment.
- the control unit 160 drives the pipette moving unit 112 to start the tip of the pipette tip 170. Is moved directly above a part of the placement surface 650 (reference portion 180). Then, the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. The first pressure in the chip 170 is measured (step S421).
- the second pressure in the pipette tip 170 is measured (step S422).
- the control unit 160 drives the pipette moving unit 112 so that the tip of the pipette tip 170 is positioned closer to the part of the arrangement surface 650 (reference unit 180) side than the step of measuring the first pressure (step S421). Move to.
- the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. A second pressure in the chip 170 is measured.
- a difference between the first pressure and the second pressure is obtained (step S423).
- the control unit 160 obtains a difference between the first pressure and the second pressure by subtracting the second pressure (first pressure) from the first pressure (second pressure). Then, when the difference between the first pressure and the second pressure is generated, the first position information of the tip of the pipette tip 170 with respect to the reference unit 180 is acquired.
- the SPFS device according to the fourth embodiment has the same effects as the SPFS device 100 according to the first embodiment.
- the SPFS device according to the fifth embodiment is different from the SPFS device 100 according to the first embodiment in the first reference unit 180a. Therefore, the same components as those of the SPFS device 100 according to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.
- FIG. 9A is a diagram illustrating a partial configuration of the SPFS apparatus according to the fifth embodiment.
- the first reference portion 180a in the fifth embodiment is a seal 50 of the detection chip 10.
- the detection chip 10 according to the fifth embodiment includes a prism 20, a metal film 30, a channel lid 40, and a seal 50.
- the seal 50 closes all the openings of the injection part 70, the storage part 80, and the four recesses 46.
- the acquisition of the first position information of the tip of the pipette tip 170 is performed by first letting the gas from the tip of the pipette tip 170 with the tip of the pipette tip 170 and the solid first reference portion 180a (a part of the seal 50) separated. Measure the first pressure in the pipette tip 170 when aspirating or discharging. Then, the second pressure in the pipette tip 170 is measured when gas is sucked or discharged from the tip of the pipette tip 170 in a state where the tip of the pipette tip 170 and the first reference portion 180a are brought close to each other. Finally, based on the difference between the first pressure and the second pressure, the first position information of the tip of the pipette tip 170 with respect to the first reference portion 180a is acquired.
- FIG. 9B is a flowchart showing the contents of the process of acquiring the first position information in the fifth embodiment.
- the control unit 160 drives the pipette moving unit 112 to start the tip of the pipette tip 170. Is moved immediately above a part of the seal 50 (reference part 180). Then, the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131. The first pressure in the chip 170 is measured (step S521).
- the second pressure in the pipette tip 170 is measured (step S522).
- the control unit 160 drives the pipette moving unit 112 to move the tip of the pipette tip 170 closer to a part of the seal 50 (reference unit 180) side than the step of measuring the first pressure (step S521). Move.
- the controller 160 drives the liquid feed pump drive mechanism 113 to advance the plunger 115 relative to the syringe 114, and continuously pipes air out from the tip of the pipette tip 170, while pipetting with the air pressure sensor 131.
- a second pressure in the chip 170 is measured.
- step S523 the difference between the first pressure and the second pressure is obtained.
- the control unit 160 obtains a difference between the first pressure and the second pressure by subtracting the second pressure (first pressure) from the first pressure (second pressure). Then, when the difference between the first pressure and the second pressure is generated, the first position information of the tip of the pipette tip 170 with respect to the reference unit 180 is acquired.
- the SPFS device according to the fifth embodiment has the same effect as the SPFS device 100 according to the first embodiment.
- an interference member for example, rubber or the like that interferes with the impact on the pipette tip 170 is used. ) May be arranged.
- a gauge block (Mitutoyo Corporation) was used as the solid first reference portion 180a.
- the pipette tip 170 was manufactured by Thermo Fisher Scientific Co., Ltd. (capacity: 300 ⁇ L).
- As the air pressure sensor 131 a substrate type semiconductor pressure sensor (Freescale Semiconductor Japan Co., Ltd.) was used.
- the flow rate of the gas discharged from the tip of the pipette tip 170 was 8.3 ⁇ L / sec.
- FIG. 10A is a schematic diagram for explaining the experimental apparatus
- FIG. 10B is a flowchart showing the contents of the process of Experiment 1.
- FIG. FIG. 11 is a schematic graph showing the relationship between the elapsed time when the air pressure is detected by the air pressure sensor 131 and the output value of the air pressure sensor 131.
- a pipette tip 170 was first attached (step S610). Specifically, the pipette tip 170 was attached to the pipette nozzle 116 arranged so that the axis of the pipette nozzle 116 was along the normal line to the surface of the gauge block 700.
- step S620 gas was discharged from the tip of the pipette tip 170 (step S620). Specifically, the gas was discharged from the tip of the pipette tip 170 by advancing the plunger 115 relative to the syringe 114. At this time, the air pressure in the pipette tip 170 was monitored by the air pressure sensor 131.
- the pipette tip 170 was moved (step S630). Specifically, the pipette moving unit 112 was driven to move the pipette tip 170 toward the gauge block 700. At this time, the air pressure in the pipette tip 170 was monitored by the air pressure sensor 131 while the gas was expelled from the tip of the pipette tip 170.
- Table 1 shows the relationship between the movement distance of the pipette tip (see d in FIG. 10A) and the output value of the air pressure sensor 131. In Experiment 1, the same operation was performed three times (Tests 1 to 3).
- Table 2 shows the relationship between the movement distance of the pipette tip (see d in FIG. 10A), the output value of the air pressure sensor 131, and the presence or absence of ink adhering to the tip of the pipette tip 170. In Experiment 2, the same operation was performed three times (Tests 4 to 6).
- Table 3 shows the relationship between the movement distance of the pipette tip (see d in FIG. 10A) and the output value of the air pressure sensor 131. In Experiment 3, the same operation was performed three times (Tests 7 to 9).
- the amount of residual liquid in the channel 60 increased.
- the amount of the remaining liquid in the flow channel 60 is 6.5 ⁇ L or less from the viewpoint of measuring the target substance with high reliability.
- the first reference portion 180a is used as the bottom surface of the flow channel 60 that requires the highest accuracy for the operation on the bottom surface of the flow channel 60, so that the first position information of the tip of the pipette tip 170 can be obtained with high accuracy. I was able to detect it. Further, the position of the tip of the pipette tip 170 can be controlled with high accuracy by using the first reference portion 180a as the bottom surface of the flow channel 60 where the most accurate operation is required for the bottom surface of the flow channel 60. It was suggested that the accuracy of the detection result can be improved by making the amount of the remaining liquid in the flow channel 60 constant.
- the detection method and reaction apparatus according to the present invention can measure a substance to be detected with high reliability, for example. Therefore, it is expected to contribute to the development, spread and development of a very simple quantitative immunoassay system.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
図1は、本発明の実施の形態1に係る表面プラズモン励起増強蛍光分析装置(SPFS装置)100の構成を示す模式図である。
図2は、検出チップ10の構成を示す図である。図2Aは、検出チップ10の平面図であり、図2Bは、図2Aに示されるA-A線の断面図であり、図2Cは、図2Aに示されるB-B線の断面図である。図3は、検出チップ10の他の形態を示す断面模式図である。
次に、本実施の形態に係るSPFS装置100の各構成部材について説明する。前述したように、SPFS装置100は、送液部110、搬送部120、位置情報取得部130、光照射部140、光検出部150および制御部160を有する。検出チップ10は、搬送部120のチップホルダー121に保持されうる。
次に、実施の形態1に係るピペットチップ170の先端の位置情報を検出する検出方法を含むSPFS装置100の被検出物質の検出動作について説明する。図4は、SPFS装置100の動作手順の一例を示すフローチャートである。図5Aは、第1位置情報を取得する工程(図4における工程S120)の内容を示すフローチャートであり、図5Bは、第2位置情報を取得する工程(図4における工程S130)の内容を示すフローチャートである。この例では、捕捉体として1次抗体が金属膜30上に固定化されている。また、蛍光標識に使用する捕捉体として、蛍光物質で標識された2次抗体を使用している。さらに、第1基準部180aは、流路60の底面とし、第2基準部180bは、凹部46に貯留されている液体の液面とした(図2B参照)。
以上のように、本実施の形態に係るSPFS装置100は、ピペットチップ170の先端の位置に関する第1位置情報に基づいてピペットチップ170を操作しているため、高精度にピペットチップ170の先端の位置を制御することができる。また、これにより、流路60内の残液量を一定にすることで、検出結果の精度を向上させることができる。
実施の形態2に係るSPFS装置は、第1基準部180aが実施の形態1に係るSPFS装置100と異なる。そこで、実施の形態1に係るSPFS装置100と同様の構成については同一の符号を付してその説明を省略し、異なる部分を中心に説明する。
図6Aは、実施の形態2に係るSPFS装置の一部の構成を示す図である。
次に、実施の形態2に係る検出方法を含むSPFS装置の検出動作について、実施の形態1に係るSPFS装置100の検出動作と異なる工程を中心に説明する。
以上のように、実施の形態2に係るSPFS装置は、実施の形態1に係るSPFS装置100と同様の効果を有する。
実施の形態3に係るSPFS装置は、第1基準部180aが実施の形態1に係るSPFS装置100と異なる。そこで、実施の形態1に係るSPFS装置100と同様の構成については同一の符号を付してその説明を省略し、異なる部分を中心に説明する。
図7Aは、実施の形態3に係るSPFS装置の一部の構成を示す図である。
次に、実施の形態3に係る検出方法を含むSPFS装置の検出動作について、実施の形態1に係るSPFS装置100の検出動作と異なる工程を中心に説明する。
以上のように、実施の形態3に係るSPFS装置は、実施の形態1に係るSPFS装置100と同様の効果を有する。
実施の形態4に係るSPFS装置は、第1基準部180aが実施の形態1に係るSPFS装置100と異なる。そこで、実施の形態1に係るSPFS装置100と同様の構成については同一の符号を付してその説明を省略し、異なる部分を中心に説明する。
図8Aは、実施の形態4に係るSPFS装置の一部の構成を示す図である。
次に、実施の形態4に係る検出方法を含むSPFS装置の検出動作について、実施の形態1に係るSPFS装置100の検出動作と異なる工程を中心に説明する。
以上のように、実施の形態4に係るSPFS装置は、実施の形態1に係るSPFS装置100と同様の効果を有する。
実施の形態5に係るSPFS装置は、第1基準部180aが実施の形態1に係るSPFS装置100と異なる。そこで、実施の形態1に係るSPFS装置100と同様の構成については同一の符号を付してその説明を省略し、異なる部分を中心に説明する。
図9Aは、実施の形態5に係るSPFS装置の一部の構成を示す図である。
次に、実施の形態5に係る検出方法を含むSPFS装置の検出動作について、実施の形態1に係るSPFS装置100の検出動作と異なる工程を中心に説明する。
以上のように、実施の形態5に係るSPFS装置は、実施の形態1に係るSPFS装置100と同様の効果を有する。
次いで、上記各実施の形態に係るSPFS装置について、ピペットチップ170の先端の位置を検出できることを確認するために、以下の実験を行った。本実験では、図1に示されるSPFS装置100における送液部110と同様に構成した実験装置を使用した。
実験1では、ピペットノズル116に装着されたピペットチップ170を固体の第1基準部180aに向けて移動させたときに、ピペットノズル116に接続された空気圧センサー131の出力値が変化するか否かについて調べた。
次いで、実験1における空気圧センサー131の出力値の上昇が、ピペットチップ170の先端がゲージブロック700の表面(第1基準部180a)に近接したことによるものか否かについて調べた。
実験3では、図2に示す検出チップ10の流路60の底面を第1基準部180aとして、ピペットノズル116に装着されたピペットチップ170を第1基準部180aに向けて移動させたときに、ピペットノズル116に接続された空気圧センサー131の出力値が変化するか否かについて調べた。その他の実験条件は、実験1と同様とした。
実験4では、流路60の底面およびピペットチップ170の先端の間の距離と、流路60内に残留する液体の量との関係について調べた。
20 プリズム
21 入射面
22 成膜面
23 出射面
30 金属膜
40 流路蓋
41 反応領域
42 試薬貯留領域
43 流路溝
44 第1貫通孔
45 第2貫通孔
46 凹部
60 流路
60’ ウェル
70 注入部
80 貯留部
100 SPFS装置
110 送液部
111 ピペット
112 ピペット移動部
113 送液ポンプ駆動機構
114 シリンジ
115 プランジャー
116 ピペットノズル
120 搬送部
121 チップホルダー
122 搬送ステージ
130 位置情報取得部
131 空気圧センサー
140 光照射部
141 光源ユニット
142 角度調整機構
143 光源制御部
150 光検出部
151 受光ユニット
152 位置切り替え機構
153 センサー制御部
154 第1レンズ
155 光学フィルター
156 第2レンズ
157 受光センサー
160 制御部
170 ピペットチップ
180a 第1基準部
180b 第2基準部
650 配置面
700 ゲージブロック
α 励起光
β 反射光
γ プラズモン散乱光
δ 蛍光
Claims (10)
- ピペットノズルに装着された、液体を吸引または排出するためのピペットチップの先端位置を検出する検出方法であって、
前記ピペットチップの先端と固体の基準部とを離した状態で、前記ピペットチップの先端から気体を吸引または排出したときの前記ピペットチップ内の第1圧力を測定する第1工程と、
前記第1工程よりも前記ピペットチップの先端と前記基準部とを近づけた状態で、前記ピペットチップの先端から気体を吸引または排出したときの前記ピペットチップ内の第2圧力を測定する第2工程と、
前記第1工程および前記第2工程の後、前記第1工程で測定された前記第1圧力と前記第2工程で測定された前記第2圧力との差に基づいて、前記基準部に対する前記ピペットチップの先端位置を検出する第3工程と、を含む、
検出方法。 - 前記基準部は、前記ピペットチップ内に吸入した液体を収容するための天面に開口を含む収容部を有する収容チップにおける前記収容部の底面である、請求項1に記載の検出方法。
- 前記基準部は、前記ピペットチップ内に吸入した液体を収容するための天面に開口を含む収容部と、前記開口を封止するシールとを有する収容チップにおける前記シールである、請求項1に記載の検出方法。
- 前記基準部は、前記ピペットチップ内に吸入した液体を収容するための天面に開口を含む収容部を有する収容チップにおける前記天面である、請求項1に記載の検出方法。
- 前記基準部は、前記ピペットチップ内に吸入した液体を収容するための収容部を有する収容チップを搬送するための搬送ステージである、請求項1に記載の検出方法。
- 前記基準部は、前記ピペットチップ内に吸入した液体を収容するための収容部を有する収容チップを搬送するための搬送ステージを設置する設置面である、請求項1に記載の検出方法。
- ピペットノズルに装着されたピペットチップと、液体を収容するための収容部を有する反応チップとを使用して、前記反応チップ内において2以上の物質を反応させる反応装置であって、
前記反応チップを保持するチップホルダーと、
前記ピペットチップを着脱可能なピペットノズルを含むピペットと、
前記ピペットノズルに接続された前記ピペットチップ内の空気圧を測定する空気圧センサーを含み、前記ピペットチップの先端の位置情報を取得する位置情報取得部と、
前記ピペットを移動させるピペット移動部と、を有し、
前記位置情報取得部は、前記ピペット移動部が、前記ピペットチップの先端と固体の第1基準部との間隔を変えつつ、前記ピペットが前記ピペットチップの先端から気体を吸引または排出したときの前記ピペットチップ内の空気圧の変化を前記空気圧センサーで測定することで、前記第1基準部に対する前記ピペットチップの先端の第1位置情報を取得し、
前記ピペット移動部は、前記位置情報取得部が前記第1位置情報を取得した後に、前記反応チップ内において2以上の物質を反応させるために、前記第1位置情報に基づいて前記ピペットを移動させる、
反応装置。 - 前記位置情報取得部は、前記ピペット移動部が、前記ピペットチップの先端と前記収容部に収容された液体の第2基準部との間隔を変えつつ、前記ピペットが前記ピペットチップの先端から気体を吸入または排出したときの前記ピペットチップ内の空気圧の変化を前記空気圧センサーで測定することで、前記第2基準部に対する前記ピペットチップの先端の第2位置情報をさらに取得し、
前記ピペット移動部は、前記位置情報取得部が前記第1位置情報および前記第2位置情報を取得した後に、前記反応チップ内において2以上の物質を反応させるために、前記第1位置情報および前記第2位置情報に基づいて前記ピペットを移動させる、
請求項7に記載の反応装置。 - 前記第1位置情報を取得する操作における前記ピペットチップの先端から吸入または排出する気体の圧力は、前記第2位置情報を取得する操作における前記ピペットチップの先端から吸入または排出する気体の圧力と異なる、請求項8に記載の反応装置。
- 前記位置情報取得部が前記第1位置情報および前記第2位置情報を取得する場合に、前記ピペットが前記ピペットチップの先端から気体を吸引するときは、前記第1位置情報を取得する操作における前記ピペットチップの先端から吸引する気体の圧力は、前記第2位置情報を取得する操作における前記ピペットチップの先端から吸引する気体の圧力より低く、
前記位置情報取得部が前記第1位置情報および前記第2位置情報を取得する場合に、前記ピペットが前記ピペットチップの先端から気体を排出するときは、前記第1位置情報を取得する操作における前記ピペットチップの先端から排出する気体の圧力は、前記第2位置情報を取得する操作における前記ピペットチップの先端から排出する気体の圧力より高い、
請求項9に記載の反応装置。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017500552A JP6638721B2 (ja) | 2015-02-20 | 2016-01-19 | 検出方法および反応装置 |
| US15/551,757 US20180059130A1 (en) | 2015-02-20 | 2016-01-19 | Detection Method and Reaction Device |
| EP16752182.2A EP3260869A4 (en) | 2015-02-20 | 2016-01-19 | Detection method and reaction device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015031692 | 2015-02-20 | ||
| JP2015-031692 | 2015-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016132793A1 true WO2016132793A1 (ja) | 2016-08-25 |
Family
ID=56689401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2016/051343 Ceased WO2016132793A1 (ja) | 2015-02-20 | 2016-01-19 | 検出方法および反応装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20180059130A1 (ja) |
| EP (1) | EP3260869A4 (ja) |
| JP (1) | JP6638721B2 (ja) |
| WO (1) | WO2016132793A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018164006A1 (ja) | 2017-03-06 | 2018-09-13 | コニカミノルタ株式会社 | ピペットチップ先端検知装置、ピペットチップ先端検知プログラム |
| WO2019244604A1 (ja) * | 2018-06-22 | 2019-12-26 | コニカミノルタ株式会社 | 検出方法及び検出装置 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7019303B2 (ja) * | 2017-03-24 | 2022-02-15 | 東芝テック株式会社 | 液滴分注装置 |
| WO2019018152A1 (en) * | 2017-07-18 | 2019-01-24 | Molecular Devices, Llc | OBJECT SAMPLING APPARATUS BASED ON THE IMAGING OF A PIPETTE TIP |
| EP3759502B1 (de) * | 2018-02-27 | 2024-09-25 | Eppendorf SE | Messapparat für einen laborautomaten zur messung eines gegenstands, gegenstand für diesen messapparat und messverfahren |
| TW202321840A (zh) * | 2021-11-18 | 2023-06-01 | 達明機器人股份有限公司 | 檢測設備 |
| CN115041246B (zh) * | 2022-07-15 | 2023-04-18 | 成都瀚辰光翼科技有限责任公司 | 移液器控制方法及装置、移液控制设备和可读存储介质 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264831A (ja) * | 1998-03-19 | 1999-09-28 | Hitachi Ltd | 分注装置 |
| JP2007139704A (ja) * | 2005-11-22 | 2007-06-07 | Sugino Mach Ltd | ノズル先端基準高さ位置調整装置及びサンプリング装置 |
| JP2013186019A (ja) * | 2012-03-09 | 2013-09-19 | Konica Minolta Inc | 反応進行装置 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109373A (ja) * | 1986-10-27 | 1988-05-14 | Kyoto Daiichi Kagaku:Kk | サンプリング方法及びその装置 |
| JPS6459158A (en) * | 1987-08-31 | 1989-03-06 | Shimadzu Corp | Automatic sample introduction apparatus |
| JP3231271B2 (ja) * | 1997-11-27 | 2001-11-19 | アロカ株式会社 | 分注装置 |
| JP4677076B2 (ja) * | 2000-04-19 | 2011-04-27 | アークレイ株式会社 | 液面検知装置 |
| JP4534013B2 (ja) * | 2004-12-02 | 2010-09-01 | 独立行政法人物質・材料研究機構 | ライブラリ製造装置及びライブラリ製造方法 |
| JP5736280B2 (ja) * | 2011-09-06 | 2015-06-17 | 株式会社日立ハイテクノロジーズ | 自動分析装置 |
| JP2013076674A (ja) * | 2011-09-30 | 2013-04-25 | Fujifilm Corp | 分注装置および吸引ノズル位置制御方法 |
| DE102011088321B4 (de) * | 2011-12-12 | 2018-01-04 | Asm Assembly Systems Gmbh & Co. Kg | Pneumatisches Bestimmen der Höhenlage eines Bauelements relativ zu einer Bauelement-Haltevorrichtung |
| US9970875B2 (en) * | 2011-12-26 | 2018-05-15 | Konica Minolta, Inc. | Sensor chip for SPFS measurement, SPFS measurement method using sensor chip for SPFS measurement, and SPFS measurement device equipped with sensor chip for SPFS measurement |
| CN107617511B (zh) * | 2012-04-30 | 2020-06-12 | 生命技术公司 | 离心机装置和系统 |
| US10105697B2 (en) * | 2014-08-15 | 2018-10-23 | Biomerieux, Inc. | Methods, systems, and computer program products for detecting a surface using a pipette and/or positioning a pipette |
-
2016
- 2016-01-19 US US15/551,757 patent/US20180059130A1/en not_active Abandoned
- 2016-01-19 EP EP16752182.2A patent/EP3260869A4/en not_active Withdrawn
- 2016-01-19 WO PCT/JP2016/051343 patent/WO2016132793A1/ja not_active Ceased
- 2016-01-19 JP JP2017500552A patent/JP6638721B2/ja active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264831A (ja) * | 1998-03-19 | 1999-09-28 | Hitachi Ltd | 分注装置 |
| JP2007139704A (ja) * | 2005-11-22 | 2007-06-07 | Sugino Mach Ltd | ノズル先端基準高さ位置調整装置及びサンプリング装置 |
| JP2013186019A (ja) * | 2012-03-09 | 2013-09-19 | Konica Minolta Inc | 反応進行装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3260869A4 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018164006A1 (ja) | 2017-03-06 | 2018-09-13 | コニカミノルタ株式会社 | ピペットチップ先端検知装置、ピペットチップ先端検知プログラム |
| JP2018146373A (ja) * | 2017-03-06 | 2018-09-20 | テラメックス株式会社 | ピペットチップ先端検知装置、ピペットチップ先端検知プログラム |
| EP3594693A4 (en) * | 2017-03-06 | 2020-03-25 | Konica Minolta, Inc. | DEVICE FOR DETECTING THE FRONT END OF A PIPETTE TIP AND PROGRAM FOR DETECTING THE FRONT END OF A PIPETTE TIP |
| US11204363B2 (en) | 2017-03-06 | 2021-12-21 | Konica Minolta, Inc. | Device for detecting leading end of pipette tip, and storage medium storing program for detecting leading end of pipette tip |
| WO2019244604A1 (ja) * | 2018-06-22 | 2019-12-26 | コニカミノルタ株式会社 | 検出方法及び検出装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3260869A1 (en) | 2017-12-27 |
| JP6638721B2 (ja) | 2020-01-29 |
| US20180059130A1 (en) | 2018-03-01 |
| EP3260869A4 (en) | 2018-03-07 |
| JPWO2016132793A1 (ja) | 2017-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6638721B2 (ja) | 検出方法および反応装置 | |
| JP6424890B2 (ja) | 表面プラズモン増強蛍光測定方法、表面プラズモン増強蛍光測定装置および分析チップ | |
| JP6801656B2 (ja) | 検出装置および検出方法 | |
| JP6648764B2 (ja) | 反応方法 | |
| WO2015152198A1 (ja) | 表面プラズモン共鳴蛍光分析方法、表面プラズモン共鳴蛍光分析装置および位置合わせ方法 | |
| JPWO2016132945A1 (ja) | 反応方法および反応装置 | |
| JPWO2018016383A1 (ja) | 検出方法および検出装置 | |
| WO2016208421A1 (ja) | 測定方法、並びにこれに用いる測定チップ、及び測定用キット | |
| WO2017130369A1 (ja) | 検出方法、検出システム、および検出装置 | |
| JP6690655B2 (ja) | 送液方法、ならびにこれを行う検出システムおよび検出装置 | |
| WO2019150993A1 (ja) | 判定装置、および判定方法 | |
| JP6922907B2 (ja) | 反応方法、ならびにこれを行う反応システムおよび反応装置 | |
| JPWO2017057136A1 (ja) | 表面プラズモン励起増強蛍光分光測定方法、および測定用キット | |
| JP6642592B2 (ja) | 送液方法、ならびにこれを行う検出システムおよび検出装置 | |
| JPWO2016031412A1 (ja) | 反応方法、検出方法および検出装置 | |
| WO2019244604A1 (ja) | 検出方法及び検出装置 | |
| JPWO2018179950A1 (ja) | 検体検出システム用センサーチップ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16752182 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2017500552 Country of ref document: JP Kind code of ref document: A |
|
| REEP | Request for entry into the european phase |
Ref document number: 2016752182 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 15551757 Country of ref document: US |