WO2022131153A1 - オートサンプラの流路洗浄方法及びオートサンプラの流路洗浄装置 - Google Patents
オートサンプラの流路洗浄方法及びオートサンプラの流路洗浄装置 Download PDFInfo
- Publication number
- WO2022131153A1 WO2022131153A1 PCT/JP2021/045517 JP2021045517W WO2022131153A1 WO 2022131153 A1 WO2022131153 A1 WO 2022131153A1 JP 2021045517 W JP2021045517 W JP 2021045517W WO 2022131153 A1 WO2022131153 A1 WO 2022131153A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cleaning
- flow path
- sample
- measurement item
- measurement
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 339
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 142
- 238000005259 measurement Methods 0.000 claims abstract description 103
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 abstract description 15
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 146
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 230000008569 process Effects 0.000 description 13
- 238000000926 separation method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- MUMGGOZAMZWBJJ-DYKIIFRCSA-N Testostosterone Chemical compound O=C1CC[C@]2(C)[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 MUMGGOZAMZWBJJ-DYKIIFRCSA-N 0.000 description 8
- 239000003960 organic solvent Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000010926 purge Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910021642 ultra pure water Inorganic materials 0.000 description 5
- 239000012498 ultrapure water Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229960003604 testosterone Drugs 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 3
- 239000012472 biological sample Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920002530 polyetherether ketone Polymers 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- VOXZDWNPVJITMN-ZBRFXRBCSA-N 17β-estradiol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 VOXZDWNPVJITMN-ZBRFXRBCSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229960005309 estradiol Drugs 0.000 description 2
- 229930182833 estradiol Natural products 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 238000002013 hydrophilic interaction chromatography Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- PYVHTIWHNXTVPF-UHFFFAOYSA-N F.F.F.F.C=C Chemical compound F.F.F.F.C=C PYVHTIWHNXTVPF-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 238000005040 ion trap Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 1
- 229920013653 perfluoroalkoxyethylene Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- G01N35/1004—Cleaning sample transfer devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/24—Automatic injection systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/72—Mass spectrometers
- G01N30/7233—Mass spectrometers interfaced to liquid or supercritical fluid chromatograph
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/032—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces by the mechanical action of a moving fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/18—Injection using a septum or microsyringe
Definitions
- the present disclosure relates to a flow path cleaning method of an autosampler, which is a sample introduction unit of an automatic analyzer that analyzes a plurality of measurement items, and a flow path cleaning device of the autosampler.
- An example of an automatic analyzer is a liquid chromatograph mass spectrometer (HPLC / MS).
- the liquid chromatograph mass spectrometer is a device that combines a liquid chromatograph and a mass spectrometer.
- HPLC liquid chromatograph
- MS mass analyzer
- liquid chromatograph mass spectrometer which is an example of an automatic analyzer
- a cleaning method for the sample injection needle and a cleaning mechanism for cleaning are devised as a method for reducing carryover. The technology to do this is disclosed.
- Patent Document 1 in an autosampler of a liquid chromatograph, the needle is washed while supplying the washing liquid to the washing tank, and the type of the washing liquid is switched according to the type of the sample attached to the needle and the like.
- An autosampler capable of cleaning needles is disclosed.
- Patent Document 2 when cleaning the sample introduction needle, the inside of the sample loop, etc., a diaphragm pump is used to feed the cleaning liquid, so that the time required for feeding the liquid is different from that of a conventional pump or a syringe mechanism.
- An auto sampler cleaning mechanism capable of maintaining liquid feeding without loss is disclosed.
- Recent needs for automated analyzers include processing a large number of samples in a short time, that is, improving the throughput and suppressing the increase in inspection cost due to the increase in the number of processed samples. Therefore, it is preferable to improve the throughput by shortening the processing time per sample, and to reduce the inspection cost by reducing the amount of reagent consumed per sample and the amount of cleaning liquid consumed.
- the cleaning of the sample introduction part performed before and after dispensing the measurement sample becomes insufficient, and carryover that causes a measurement error is detected among multiple samples. May be done. Therefore, it is preferable to simultaneously improve the throughput, reduce the consumption of cleaning liquid, and reduce the carryover.
- the time that the nozzle for introducing (dispensing) a predetermined amount of the sample can be spent for processing one sample is limited, and the time for sufficiently cleaning the nozzle after dispensing is limited. It may not be possible to secure it.
- Patent Document 1 the effect of carryover is obtained by cleaning the needle while supplying the cleaning liquid to the cleaning tank, or by switching the type of the cleaning liquid according to the type of the sample attached to the needle and performing the cleaning of the needle. Is possible to reduce. However, it may be preferable to spend a long time cleaning to reduce carryover, such as after measuring a high concentration sample. That is, if the cleaning is insufficient within the predetermined cleaning time, the cleaning is performed at the expense of the analysis throughput, and the analysis throughput may decrease.
- Patent Document 2 when the needle for sample injection and the inside of the sample loop are cleaned, the diaphragm pump is used to feed the cleaning liquid, so that the time loss associated with the feeding of the cleaning liquid can be reduced, which is limited.
- the cleaning time can be used efficiently.
- the influence of carryover is minimized, it can be expected that a sufficient cleaning effect can be obtained by setting the flow velocity of the cleaning pump to a high value in advance.
- the cleaning liquid is sent at a high flow rate, and excessive cleaning tends to increase the consumption of the cleaning liquid.
- the problem to be solved by the present disclosure is to provide an autosampler flow path cleaning method and an autosampler flow path cleaning device that can both suppress the decrease in analysis throughput and suppress the increase in cleaning liquid consumption.
- the flow path cleaning method of the auto sampler of the present disclosure includes a first flow path including a nozzle for sucking a sample and a sample loop for holding the sample sucked from the nozzle, and a washing tank for cleaning at least the outer wall of the nozzle.
- a first flow path including a nozzle for sucking a sample and a sample loop for holding the sample sucked from the nozzle, and a washing tank for cleaning at least the outer wall of the nozzle.
- the above is based on the first cleaning information indicating the cleaning pattern corresponding to the first measurement item of the sample and the second cleaning information indicating the cleaning pattern corresponding to the second measurement item to be measured next to the first measurement item. It is characterized in that the flow velocity of the cleaning liquid supplied between the measurement of the first measurement item and the measurement of the second measurement item is changed
- an autosampler flow path cleaning method and an autosampler flow path cleaning device that can both suppress the decrease in analysis throughput and suppress the increase in cleaning liquid consumption.
- FIG. 1 is a schematic diagram of the autosampler 1 according to the present embodiment.
- the auto sampler 1 includes a sample introduction valve 101, a sample loop 102, a measuring unit 103, a gear pump 104, a system water 105, a cleaning pump 106, a cleaning tank 107, a sample cup 108, a nozzle 109, a solenoid valve 110, 111, 112, and a liquid feed.
- a pump 113, a separation column 114, a detector 115, and cleaning liquids 116 and 117 (cleaning liquid containers) are provided. All of these are connected by a flow path such as a pipe (not shown).
- the system water 105 and the cleaning liquids 116 and 117 are both stored in a tank (not shown), for example.
- the flow path cleaning device 10 of the autosampler 1 includes a first flow path 11, a second flow path 12, a cleaning liquid supply mechanism 13, a flow path switching mechanism 14, and a control device 118.
- the first flow path 11 includes a nozzle 109 for sucking a sample and a sample loop 102 for holding a sample sucked from the nozzle 109.
- the inner wall of the nozzle 109 is cleaned by the flow of the cleaning liquids 116 and 117 to the first flow path 11. If necessary, water such as ultrapure water and system water 105 may be used as the cleaning liquid to clean the inner wall of the nozzle 109.
- the second flow path 12 includes a cleaning tank 107 for cleaning at least the outer wall of the nozzle 109.
- the cleaning liquid supply mechanism 13 supplies the cleaning liquids 116 and 117 to the cleaning tank 107 through the first flow path 11 and the second flow path 12, respectively. The details will be described later, but at least the outer wall of the nozzle 109 is cleaned by putting the nozzle 109 in the cleaning tank 107 containing the cleaning liquids 116 and 117 and bringing them into contact with the cleaning liquids 116 and 117. If necessary, water such as ultrapure water and system water 105 may be used as the cleaning liquid to clean the outer wall of the nozzle 109.
- the cleaning liquid supply mechanism 13 includes a cleaning pump 106.
- the flow path switching mechanism 14 switches the supply destination of the cleaning liquid supplied from the cleaning liquid supply mechanism 13 between the first flow path 11 and the second flow path 12.
- the flow path switching mechanism 14 includes solenoid valves 110, 111, 112.
- the control device 118 controls the drive of the autosampler 1 and is connected to the autosampler 1 through an electric signal line (not shown).
- the control device 118 which will be described later with reference to FIGS. 5 and 6, includes the first cleaning information indicating the cleaning pattern corresponding to the first measurement item and the second measurement item to be measured next to the first measurement item.
- the flow velocity of the cleaning liquids 116 and 117 supplied between the measurement of the first measurement item and the measurement of the second measurement item is changed based on the second cleaning information indicating the corresponding cleaning pattern.
- Both the first cleaning information and the second round information are examples of cleaning information indicating a cleaning pattern according to the measurement item of the sample.
- control device 118 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like.
- the control device 118 is embodied when a predetermined control program stored in the ROM is expanded in the RAM and executed by the CPU.
- the sample is installed in the sample processing section (not shown) of the automatic analyzer (not shown) and transferred to the pretreatment section (not shown).
- the sample is purified and concentrated in the pretreatment section, and the sample cup 108 containing the sample is transferred to the sample cup holding section (not shown) of the autosampler 1.
- a 6-port 2-position valve is used in this embodiment, and a high-pressure valve having a high-pressure (for example, 100 MPa) withstand voltage function is used.
- FIG. 2A is a schematic view of a 6-port 2-position valve showing the sample introduction valve 101 according to the present embodiment, and is a diagram showing the first position.
- the sample introduction valve 101 has six ports 201, 202, 203, 204, 205, 206.
- the port 201 is connected to the separation column 114, the ports 202 and 205 are connected to the sample loop 102, the port 203 is connected to the solenoid valve 111 (FIG. 1), and the port 204 is connected to the nozzle 109 (FIG. 1).
- Connected, port 206 is connected to the liquid feed pump 113.
- a state in which the valve head rotates to two positions to switch the flow path of the groove provided in the internal rotor seal so that adjacent ports are electrically connected to each other. Has a structure in which is switched alternately.
- the liquid feed pump 113, the sample loop 102, and the separation column 114 are connected via a flow path (not shown) in the sample introduction valve 101.
- the flow path from the liquid feed pump 113 is connected to the sample loop 102, so that the liquid is fed under a high pressure condition of, for example, a maximum of 100 MPa.
- FIG. 2B is a schematic diagram of a 6-port 2-position valve showing the sample introduction valve 101 according to the present embodiment, and is a diagram showing the second position.
- the nozzle 109 (FIG. 1), the sample loop 102, and the solenoid valve 111 (FIG. 1) are connected via a flow path (not shown) in the sample introduction valve 101.
- the weighing unit 103 or the gear pump 104 (FIG. 1) at the subsequent stage of the weighing unit 103 is connected to the sample loop 102. Therefore, the liquid is fed under a low pressure condition of, for example, 1 MPa or less, typically 300 KPa at the maximum.
- the sample loop 102 is made of stainless steel (SUS) in this embodiment, and is, for example, a pipe having an inner diameter of 0.3 mm, an outer diameter of 1/16 inch, a length of 283 mm, and a volume of 20 ⁇ L.
- the materials are polyetheretherketone (PEEK) other than SUS, PEEKsil (the outer surface of fused silica coated with PEEK), polytetrafluoroethylene (PTFE), and the co-weight of ethylene tetrafluoride and perfluoroalkoxy ethylene.
- Resin piping such as coalescence (PFA) may be used. The dimensions may be changed as appropriate according to the measurement conditions.
- the measuring unit 103 includes a syringe and a stepping motor (both not shown), and controls the drive amount of the syringe (not shown) by pulse control.
- a syringe having an inner diameter of 23.8 mm, a length of 85 mm, and a plunger capacity of 723 ⁇ L is used.
- the syringe may be driven by a servomotor instead of a stepping motor.
- the gear pump 104 is arranged after the measuring unit 103, and supplies pure water, which is the system water 105, to the flow path in the front stage of the measuring unit 103 and its syringe (not shown).
- a two-way solenoid valve (not shown) is arranged between the measuring unit 103 and the system water 105, and the system water 105 is supplied into the measuring unit 103 by controlling the opening and closing of the two-way solenoid valve.
- the pressure at the time of supply is, for example, 300 kPa in this embodiment. This pressure is appropriately changed by, for example, the withstand voltage of the two-way solenoid valve or the solenoid valve 111 arranged in the front stage of the gear pump 104. Further, the flow velocity of the system water 105 may be changed by the gear pump 104.
- the cleaning pump 106 a tube pump is used in this embodiment.
- the cleaning pump 106 may be a diaphragm pump.
- the flow path of the cleaning pump 106 is connected to the solenoid valve 110.
- FIG. 3 shows the relationship between the voltage applied to the cleaning pump 106 and the flow velocity (liquid flow rate) according to the present embodiment.
- This relationship is stored in the control device 118 (FIG. 1) as an illustrated graph, for example.
- the flow velocity can be changed by changing the voltage applied to the cleaning pump 106. For example, by increasing the applied voltage, the flow velocity can be linearly increased, for example.
- the applied voltage is controlled by, for example, the control device 118.
- a solenoid valve 112 which is a three-way solenoid valve is provided upstream of the cleaning pump 106, and cleaning liquids 116 and 117 are used by switching the solenoid valve 112.
- the cleaning liquid 116 is, for example, acetonitrile
- the cleaning liquid 117 is, for example, methanol.
- the types of the cleaning liquids 116 and 117 are determined by the cleaning pattern (cleaning conditions) set by the user for each measurement item, and the cleaning liquids 116 and 117 are used to clean the first flow path 11 including the nozzle 109 and the sample loop 102. Is done.
- the cleaning liquids 116 and 117 can be supplied to the cleaning tank 107 by switching the solenoid valve 110.
- FIG. 4 is a schematic view of the cleaning tank 107 according to the present embodiment.
- the cleaning tank 107 cleans at least the outside of the nozzle 109 by immersing the nozzle 109 in the supplied cleaning liquids 116 and 117.
- the cleaning tank 107 includes a drain port 402, an organic solvent cleaning port 403, and a water cleaning port 404.
- Cleaning liquids 116 and 117 (FIG. 1) are supplied to the organic solvent cleaning port 403, and system water 105 (FIG. 1) is supplied to the water cleaning port 404.
- system water 105 FIG. 1
- the cleaning liquid and the system water 105 used for cleaning the inside of the nozzle 109 are discharged to the drain port 402.
- the sample cup 108 is a quality-controlled cup.
- the material is polypropylene, and for example, a material having a lower inner diameter of 5 mm, an upper inner diameter of 6 mm, a height of 26 mm, and a volume of 250 ⁇ L is used.
- the sample cup 108 is held at the sample cup holding position (not shown).
- a sample containing a component to be measured processed by a pretreatment unit (not shown) is transferred to the sample cup 108, and the sample cup 108 containing the sample is held at the sample cup holding position.
- the nozzle 109 is made of, for example, stainless steel (SUS), and is, for example, a pipe having an inner diameter of 0.8 mm, an outer diameter of 1.5 mm, a length of 50 mm, and a volume of 25 ⁇ L.
- the inside is surface-polished to reduce carryover.
- a fitting compatible with zero dead volume is used for the connection portion (not shown) between the nozzle 109 and the pipe connecting the sample introduction valve 101 in order to suppress the dead volume. As a result, diffusion of the sample can be suppressed and carryover can be reduced.
- the solenoid valve 110 is a rocker type three-way solenoid valve in this embodiment.
- the flow path of the cleaning pump 106 is connected to the COM (common port, not shown) side
- the flow path of the solenoid valve 111 is connected to the normally open (normally open, not shown) side, which is normal.
- a cleaning tank 107 is connected to the closed (normally closed, not shown) side.
- the flow path is connected to the normally open side.
- the cleaning liquids 116 and 117 are supplied to the cleaning tank 107
- the flow path is connected to the normally closed side.
- the cleaning solution is supplied to the organic solvent cleaning port 403.
- the solenoid valve 111 is a rocker type three-way solenoid valve in this embodiment.
- the flow path of the sample introduction valve 101 is connected to the COM (common port, not shown) side
- the solenoid valve 110 is connected to the normally open (normally open, not shown) side, and is normally closed (normally closed (not shown).
- the flow path of the measuring unit 103 is connected to the side (not shown) that is always closed. At the time of suction and discharge using the measuring unit 103 and liquid feeding from the gear pump 104, the flow path is connected to the normally closed side.
- the flow path is connected to the normally open side, whereby the first flow path 11 including the sample loop 102, the sample introduction valve 101 and the nozzle 109 is cleaned. Will be washed.
- the liquid feed pump 113 is provided with two plungers (both not shown), and by reciprocating the two plungers by pulse control, two kinds of liquid feed solvents are continuously fed at a high pressure, for example, 100 MPa. Liquid.
- the liquid feed pump 113 incorporates two pumps (both not shown), and feeds liquid while changing the drive ratio of each pump according to the gradient conditions set by the user for each measurement item.
- a mixer (not shown) is provided after the liquid feed pump 113, and the liquid feed solvents sent from the two pumps are mixed by the mixer.
- the mixer is, for example, a low pressure solenoid valve (not shown).
- the solvent ratio of the liquid feed solvent can be changed by driving the low-pressure solenoid valve according to the mixing conditions set by the user for each component to be measured.
- six kinds of liquids are used as the liquid feed solvent: ultrapure water, acetonitrile, methanol, 1 mol / L formic acid, 1 mol / L ammonia water, and 1 mol / L ammonium acetate.
- These six kinds of liquids are mixed by a low pressure solenoid valve and then sent to two pumps, and the gradient liquids are sent while changing the drive ratio of the two pumps.
- the flow rate of the liquid feed solvent may be changed by the liquid feed pump 113.
- the separation column 114 is configured by accommodating a filler having an inner diameter of 1.0 mm, a length of 50 mm, and a particle diameter of 2.6 mm in a column body (not shown).
- a reverse phase mode is used as the separation mode.
- the separation mode is not limited to the reverse phase mode, but may be any of a normal phase mode, a molecular weight fractionation mode, a hydrophilic interaction chromatography mode (HILIC mode), and an antigen-antibody reaction mode.
- the detector used in the triple quadrupole mass spectrometer (Triple Q-MS) is used in the present embodiment. This is because it is excellent in quantification.
- the mass spectrometer does not have to be a triple quadrupole mass spectrometer, and may be an ion trap type mass spectrometer (Iontrap-MS) or a time-of-flight mass spectrometer (TOF-MS). Further, it may be a diode array detector, a UV detector or a fluorescence detector instead of the mass spectrometer.
- FIG. 5 is a schematic diagram of a sample table according to this embodiment.
- Cleaning pattern performed before sample dispensing that is, between the measurement of any measurement item and the measurement of the measurement item next to the measurement item, for each sample number to be measured (not shown) and for each measurement item of each sample. Is specified.
- the cleaning pattern for each measurement item is preferably determined in consideration of the detection sensitivity of the measurement target component (measurement item in the sample) in the sample, the magnitude of the dynamic range, the magnitude of the influence of carryover, and the like.
- the control device 118 (FIG. 1) of the automatic analyzer controls the flow path cleaning device 10 (FIG. 1) so as to perform cleaning according to the cleaning conditions specified in the set cleaning pattern.
- the user may assign the cleaning pattern in the sample table, or it may be set automatically.
- a database of combinations with the pre-cleaning pattern is preset. Then, based on this database, the appropriate cleaning pattern can be obtained from the order of measurement items.
- FIG. 6 is an example of a table for determining the cleaning conditions before sample dispensing according to the present embodiment. For each measurement item, specific conditions (cleaning conditions) of the cleaning pattern to be performed before sample dispensing are shown. For example, cleaning conditions indicating a cleaning pattern can be selected for each measurement item, such as cleaning patterns A to D.
- the table contains cleaning information indicating cleaning patterns according to the measurement items of the sample.
- the cleaning information includes the cleaning liquids 116 and 117 for cleaning the first flow path 11 (FIG. 1), the type of water as the cleaning liquid, and the cleaning liquid supplied to the cleaning tank 107 (FIG. 1) through the second flow path 12 (FIG. 1).
- the cleaning tank 107 It includes at least one of the types of 116,117, the flow velocity of the cleaning liquids 116,117, the cleaning time of the first flow path 11, and the cleaning time of the outer wall of the nozzle 109 in the cleaning tank 107.
- the types of cleaning liquids 116, 117 and water as cleaning liquids inner wall and outer wall of nozzle 09, respectively
- the flow rates of the cleaning liquids 116, 117 and water as cleaning liquids includes inner wall and outer wall respectively).
- the flow rate of the cleaning liquid can be changed, for example, in the range of 1 to 10 ml / min by changing the applied voltage.
- a method of changing the flow velocity by changing the operating cycle of the cleaning pump 106 (FIG. 1) instead of the applied voltage may be used.
- the cleaning time is preferably selected in the range of 0 to 20 seconds in total of the inner wall cleaning time and the outer wall cleaning time of the nozzle 109, for example.
- the cleaning pattern A methanol (MeOH) is used as the cleaning liquid for the inner wall and the outer wall of the nozzle 109 (FIG. 1), the flow rate of the cleaning liquid is 2 ml / min, the cleaning time of the inner wall is 10 seconds, and the cleaning of the outer wall is performed. Cleaning is performed with a time of 10 seconds.
- methanol (MeOH) is used as the cleaning liquid, the flow velocity of the cleaning liquid is 5 ml / min, the cleaning time of the inner wall is 15 seconds, and the cleaning time of the outer wall is 5 seconds.
- the cleaning pattern B is preferable when, for example, the detection sensitivity of the measurement target component of the measurement item of the next analysis is low and the influence of carryover from the previous analysis is reduced as much as possible.
- the cleaning pattern C ultrapure water is used as the cleaning liquid for the inner wall, and system water 105 is used as the cleaning liquid for the outer wall. Will be executed.
- the cleaning pattern C is preferable when, for example, the component to be measured in the measurement item of the next analysis is hydrophilic and cleaning is performed with an aqueous solvent.
- the cleaning pattern D ultrapure water is used as the cleaning liquid for the inner wall, and system water 105 is used as the cleaning liquid for the outer wall.
- the flow velocity of the cleaning liquid is 5 ml / min, the cleaning time for the inner wall is 15 seconds, and the cleaning time for the outer wall is 5 seconds.
- the cleaning pattern D is preferable when the measurement target component of the measurement item is hydrophilic and the detection sensitivity is low, and the influence of carryover from the previous analysis is reduced as much as possible.
- the contents of the cleaning conditions for each cleaning pattern may be changed at the user's will.
- FIG. 7 is a flowchart showing a flow path cleaning method of the autosampler 1 (FIG. 1) according to the present embodiment.
- the flow path cleaning method shown in FIG. 7 can be performed by the flow path cleaning device 10 (FIG. 1).
- the measurement item is testosterone (No. 1 in FIG. 5), and the cleaning operation and the sample dispensing operation according to the cleaning pattern A will be further described with reference to FIG. 1 before the measurement.
- the control device 118 that receives a command to execute the cleaning pattern A searches the table shown in FIG. 6, reads out the cleaning method of the cleaning pattern A, and uses the cleaning method according to the search method. Clean the inner and outer walls of 109.
- the control device 118 moves the nozzle 109 to the drain port 402 (FIG. 4) of the cleaning tank 107. After that, the control device 118 sets the solenoid valves 110, 111, 112 to the normally open side, operates the cleaning pump 106, and transfers the cleaning liquid 117 (methanol) to the nozzle 109 through the first flow path 11 (FIG. 1). At this time, the control device 118 adjusts the voltage applied to the cleaning pump 106 to adjust the flow velocity of the cleaning liquid 117 to 2 ml / min.
- the control device 118 moves the nozzle 109 to the inside of the organic solvent cleaning port 403 (FIG. 4) of the cleaning tank 107, then switches the solenoid valve 110 to the normally closed side, and the solenoid valve 112 is on the normally open side.
- the control device 118 operates the cleaning pump 106 to transfer the cleaning liquid 117 (methanol) to the organic solvent cleaning port 403 of the cleaning tank 107 through the second flow path 12 (FIG. 1).
- the control device 118 adjusts the voltage applied to the cleaning pump 106 to set the flow velocity of the cleaning liquid 117 to 2 ml / min. While the outer wall of the nozzle 109 is being cleaned, the cleaning liquid 117 overflowing from the organic solvent cleaning port 403 of the cleaning tank 107 is discharged to the discharge port (not shown) of the cleaning tank 107.
- the control device 118 moves the nozzle 109 to the drain port 402 (FIG. 4) of the cleaning tank 107, and then executes purging in the nozzle 109.
- the purge is performed with system water 105, which cleans the inner wall of the nozzle 109.
- the control device 118 opens a two-way solenoid valve (not shown) provided between the measuring unit 103 and the gear pump 104, and supplies the system water 105 to the nozzle 109 to supply the nozzle 109. Is purged.
- the control device 118 moves the nozzle 109 onto the sample cup 108 for sample suction.
- the control device 118 simultaneously executes air suction as segmented air.
- the control device 118 drives the measuring unit 103 after switching the solenoid valve 111 to the normally closed side, and sucks air.
- the measuring unit 103 is driven by, for example, 25 pulses, and 5 ⁇ L of air is sucked.
- the control device 118 lowers the nozzle 109 to the sample suction position in the height direction (Z direction) and drives the measuring unit 103 to suck the sample.
- the measuring unit 103 is driven by, for example, 175 pulses, and 35 ⁇ L of the sample is sucked.
- the sample is a biological sample, it is serum, plasma, urine, biological tissue, or the like, and if it is a biological sample, it is a calibration sample or a QC (quality control) sample.
- the control device 118 processes the sample in the pretreatment section (not shown), and transfers the sample cup 108 containing the sample to the sample cup holding section (not shown) of the autosampler 1.
- the sample transfer step S5 the sample is transferred.
- the control device 118 drives the measuring unit 103 to suck air, thereby transferring the sucked sample to the vicinity of the sample loop 102.
- the measuring unit 103 is driven for 150 pulses, and 30 ⁇ L of air is sucked.
- the backlash step S6 the backlash is executed.
- the syringe drive is operated to the discharge side.
- the measuring unit 103 is driven for 5 pulses, and 1 ⁇ L of air is discharged.
- the sample introduction valve 101 is switched.
- the control device 118 switches the sample introduction valve 101 from the first position (FIG. 2A) to the second position (FIG. 2B).
- the nozzle 109, the sample loop 102, and the solenoid valve 111 are connected.
- the sample is introduced into the sample loop 102.
- the control device 118 drives the measuring unit 103 and discharges the sample to the sample loop 102.
- the measuring unit 103 is driven by 50 pulses, and 10 ⁇ L of the sample is discharged to the sample loop 102.
- the amount of sample introduced into the sample loop 102 is variable depending on the amount of drive of the measuring unit 103.
- the sample is introduced into the separation column 114.
- the control device 118 switches the sample introduction valve 101 from the second position (FIG. 2B) to the first position (FIG. 2A).
- the liquid feed pump 113, the sample loop 102, and the separation column 114 are connected.
- the sample solution in the sample loop 102 is introduced into the separation column 114 by the mobile phase fed from the liquid feed pump 113.
- the control device 118 moves the measuring unit 103 to the home position.
- a series of sample introduction is completed, the target component is separated from the sample by the separation column 114, and the target component is detected by the detector 115.
- the control device 118 ends the operation when there is no other sample and the analysis is completed (Yes in the determination step S11). On the other hand, when there is another sample and the analysis is continued (No in the determination step S11), the control device 118 repeats the purging step S2 and subsequent steps after performing the flow path cleaning step S12.
- the flow path cleaning step S12 is executed by supplying the cleaning liquids 116 and 117 to the first flow path 11 or the second flow path 12 between the measurement of the first measurement item and the measurement of the second measurement item.
- the control device 118 supplies the cleaning liquids 116 and 117 to the flow path switched by the flow path switching mechanism 14 of the first flow path 11 and the second flow path 12 by the cleaning liquid supply mechanism 13. This enables cleaning of the inner wall of the nozzle 109, the first flow path 11 including the sample loop 102, and the outer wall of the nozzle 109 in the cleaning tank 107.
- the control device 118 supplies the first cleaning information indicating the cleaning pattern according to the first measurement item of the sample and the cleaning pattern according to the second measurement item to be measured next to the first measurement item.
- the flow velocity of the cleaning liquids 116 and 117 is changed based on the second cleaning information indicating.
- the changes can be made, for example, to the standard cleaning conditions (standard conditions) shown in FIG. 6 above.
- estradiol No. 2, the second measurement item in FIG. 5
- the cleaning pattern B corresponding to estradiol is measured.
- the flow velocities of the cleaning liquids 116 and 117 in FIG. 6 are changed from the flow velocities shown in FIG.
- a washing pattern A corresponding to testosterone is performed after each measurement.
- the flow rate (total flow rate in a predetermined washing time)
- the flow rate is slowed down to prevent simple washing or washing, and it is possible to suppress the decrease in the analysis throughput and the increase in the consumption of the washing liquid at the same time.
- the control device 118 further controls the first cleaning information (for example, the second measurement item) and the third measurement item (for example, the first measurement item) to be measured before the first measurement item. ), And the flow velocity of the cleaning liquids 116 and 117 at the time of cleaning performed immediately before the third measurement item is changed based on the third cleaning information indicating the cleaning pattern.
- the control device 118 considering the influence of the sample, reagent, etc. used in the measurement of the first and second measurement items, it is possible to wash before the measurement of the third measurement item, so that the analysis throughput is reduced more efficiently. It is possible to suppress both the suppression and the increase in the consumption of the cleaning liquid at the same time.
- the control device 118 changes the supply time of the cleaning liquids 116 and 117 based on the first cleaning information and at least one of the second cleaning information or the third cleaning information.
- the supply time to the first flow path 11 is the cleaning time of the inner wall of the nozzle 109 (FIG. 6).
- the supply time to the cleaning tank 107 is the contact time of the nozzle 109 with the outer wall of the cleaning tank 107, and is the cleaning time of the outer wall (FIG. 7).
- the control device 118 changes the flow velocity of the cleaning liquids 116 and 117 based on the ease of carryover of at least one of the sample or the measurement item used immediately before supplying the cleaning liquids 116 and 117. It is preferable that the types of cleaning liquids 116 and 117 are maintained and unchanged. Since the ease of carryover is determined to some extent by the sample and the measurement item, the occurrence of carryover can be suppressed by doing so. For example, in the case of a sample or measurement item that easily carries over, the influence of carryover can be reduced by making the flow velocity faster than the standard condition shown in FIG. At this time, if necessary, the cleaning time (supply time of the cleaning liquids 116 and 117) may be lengthened.
- the amount of cleaning liquids 116 and 117 used can be suppressed by making the flow velocity shorter than the standard conditions shown in FIG. At this time, if necessary, the supply time (cleaning time) of the cleaning liquids 116 and 117 may be shortened.
- the supply time does not necessarily have to be increased, and the supply time may not be changed or may be shortened.
- the supply time does not necessarily have to be shortened, and the supply time may not be changed or may be lengthened. Therefore, the supply time may be appropriately determined based on each condition such as ease of carryover according to the flow velocity.
- the analysis throughput is reduced by appropriately switching the cleaning conditions of the nozzle 109 according to the conditions specified in the sample table (FIG. 5) and the cleaning pattern (FIG. 6). Can be suppressed.
- the flow path cleaning device 10 can be provided.
- the present disclosure is not limited to the above-described embodiment, and includes various modified examples.
- the above-described embodiment has been described in detail in order to explain the present disclosure in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations.
- it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
れる。制御装置118は、ROMに格納されている所定の制御プログラムがRAMに展開され、CPUによって実行されることにより具現化される。
洗浄パターンBでは、洗浄液としてメタノール(MeOH)を使用し、洗浄液の流速は5ml/min、内壁の洗浄時間は15秒、外壁の洗浄時間は5秒として、洗浄が実行される。洗浄パターンBは、例えば、次の分析の測定項目の測定対象成分の検出感度が低く、前の分析からのキャリーオーバーの影響を極力低減する場合に好ましい。
洗浄パターンDでは、内壁の洗浄液として洗浄液として超純水を、外壁の洗浄液としてシステム水105を使用し、洗浄液の流速は5ml/min、内壁の洗浄時間は15秒、外壁の洗浄時間は5秒として、洗浄が実行される。洗浄パターンDは、測定項目の測定対象成分が親水性で、かつ検出感度が低く、前の分析からのキャリーオーバーの影響を極力低減する場合に好ましい。
10 流路洗浄装置
11 第1流路
12 第2流路
13 洗浄液供給機構
14 流路切替機構
101 試料導入バルブ
102 サンプルループ
103 計量ユニット
104 ギアポンプ
105 システム水
106 洗浄ポンプ
107 洗浄槽
108 サンプルカップ
109 ノズル
110,111,112 電磁弁
113 送液ポンプ
114 分離カラム
115 検出器
116,117 洗浄液
118 制御装置
201,202,203,204,205,206 ポート
402 ドレインポート
403 有機溶媒洗浄ポート
404 水洗浄ポート
S1 初回洗浄工程
S2 パージ工程
S3 エア吸引工程
S4 試料吸引工程
S5 試料移送工程
S6 バックラッシュ工程
S7 バルブ切替工程
S8 第1試料導入工程
S9 第2試料導入工程
S10 移動工程
S11 判断工程
S12 流路洗浄工程
Claims (6)
- 試料を吸引するノズルと前記ノズルから吸引された前記試料を保持するサンプルループとを含む第1流路と、前記ノズルの少なくとも外壁を洗浄する洗浄槽を含む第2流路と、のうちの流路切替機構により切り替えた流路に、洗浄液供給機構により洗浄液を供給するとき、
前記試料の測定項目に応じた洗浄パターンを示す洗浄情報のうち、前記試料の第1測定項目に応じた洗浄パターンを示す第1洗浄情報と、前記第1測定項目の次に測定する第2測定項目に応じた洗浄パターンを示す第2洗浄情報とに基づいて、前記第1測定項目の測定と前記第2測定項目の測定との間に供給される前記洗浄液の流速を制御装置によって変更する
ことを特徴とするオートサンプラの流路洗浄方法。 - 前記制御装置は、更に、前記第1洗浄情報と、前記第1測定項目の前に測定する第3測定項目に応じた洗浄パターンを示す第3洗浄情報と、基づいて、前記洗浄液の流速を変更する
ことを特徴とする請求項1に記載のオートサンプラの流路洗浄方法。 - 前記制御装置は、前記第1洗浄情報と、前記第2洗浄情報又は前記第3洗浄情報の少なくとも一方と、に基づいて、前記洗浄液の供給時間を変更する
ことを特徴とする請求項2に記載のオートサンプラの流路洗浄方法。 - 前記洗浄情報は、前記第1流路を洗浄する洗浄液の種類、前記第2流路を通じて前記洗浄槽に供給される洗浄液の種類、前記洗浄液の流速、前記第1流路の洗浄時間、及び前記洗浄槽での前記ノズルの外壁の洗浄時間のうちの少なくとも1つを含む
ことを特徴とする請求項1~3の何れか1項に記載のオートサンプラの流路洗浄方法。 - 前記制御装置は、前記洗浄液を供給する少なくとも直前に使用した前記試料又は前記測定項目の少なくとも何れか一方のキャリーオーバーのし易さに基づいて、前記洗浄液の流速を変更する
ことを特徴とする請求項1~3の何れか1項に記載のオートサンプラの流路洗浄方法。 - 試料を吸引するノズルと、前記ノズルから吸引された前記試料を保持するサンプルループとを含む第1流路と、
前記ノズルの少なくとも外壁を洗浄する洗浄槽を含む第2流路と、
前記第1流路と、前記第2流路を通じて前記洗浄槽とにそれぞれ洗浄液を供給する洗浄液供給機構と、
前記洗浄液供給機構から供給される洗浄液の供給先を前記第1流路と前記第2流路とに切り替える流路切替機構と、
前記試料の測定項目に応じた洗浄パターンを示す洗浄情報のうち、第1測定項目に応じた洗浄パターンを示す第1洗浄情報と、前記第1測定項目の次に測定する第2測定項目に応じた洗浄パターンを示す第2洗浄情報とに基づいて、前記第1測定項目の測定と前記第2測定項目の測定との間に供給される前記洗浄液の流速を変更する制御装置と、を備える
ことを特徴とするオートサンプラの流路洗浄装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21906515.8A EP4266045A1 (en) | 2020-12-16 | 2021-12-10 | Method for cleaning flow path in autosampler, and device for cleaning flow path in autosampler |
US18/038,273 US20240094236A1 (en) | 2020-12-16 | 2021-12-10 | Flow path washing method of auto sampler and flow path washing apparatus of auto sampler |
JP2022569945A JPWO2022131153A1 (ja) | 2020-12-16 | 2021-12-10 | |
CN202180082208.0A CN116583732A (zh) | 2020-12-16 | 2021-12-10 | 自动取样器的流路清洗方法和自动取样器的流路清洗装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020208705 | 2020-12-16 | ||
JP2020-208705 | 2020-12-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022131153A1 true WO2022131153A1 (ja) | 2022-06-23 |
Family
ID=82059108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/045517 WO2022131153A1 (ja) | 2020-12-16 | 2021-12-10 | オートサンプラの流路洗浄方法及びオートサンプラの流路洗浄装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240094236A1 (ja) |
EP (1) | EP4266045A1 (ja) |
JP (1) | JPWO2022131153A1 (ja) |
CN (1) | CN116583732A (ja) |
WO (1) | WO2022131153A1 (ja) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04169851A (ja) * | 1990-11-02 | 1992-06-17 | Olympus Optical Co Ltd | 自動分析装置用洗浄装置 |
JP2011179839A (ja) * | 2010-02-26 | 2011-09-15 | Shimadzu Corp | 試料導入装置 |
JP2011220928A (ja) * | 2010-04-13 | 2011-11-04 | Toshiba Corp | 自動分析装置 |
JP2012117945A (ja) * | 2010-12-02 | 2012-06-21 | Hitachi High-Technologies Corp | 液体クロマトグラフ,液体クロマトグラフ用試料導入装置、および液体クロマトグラフ用試料導入装置の洗浄方法 |
WO2013099660A1 (ja) * | 2011-12-26 | 2013-07-04 | 株式会社日立ハイテクノロジーズ | 自動分析装置及び試料分注プローブ洗浄方法 |
JP2014106213A (ja) * | 2012-11-30 | 2014-06-09 | Hitachi High-Technologies Corp | 液体クロマトグラフ用オートサンプラ |
CN105057294A (zh) * | 2015-07-31 | 2015-11-18 | 四川迈克生物医疗电子有限公司 | 样本针清洗方法、样本针清洗装置、样本分析仪 |
WO2017154083A1 (ja) * | 2016-03-07 | 2017-09-14 | 株式会社日立ハイテクノロジーズ | 分析装置 |
WO2020213061A1 (ja) * | 2019-04-16 | 2020-10-22 | 株式会社島津製作所 | クロマトグラフシステム、オートサンプラおよび洗浄方法 |
-
2021
- 2021-12-10 WO PCT/JP2021/045517 patent/WO2022131153A1/ja active Application Filing
- 2021-12-10 JP JP2022569945A patent/JPWO2022131153A1/ja active Pending
- 2021-12-10 US US18/038,273 patent/US20240094236A1/en active Pending
- 2021-12-10 CN CN202180082208.0A patent/CN116583732A/zh active Pending
- 2021-12-10 EP EP21906515.8A patent/EP4266045A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04169851A (ja) * | 1990-11-02 | 1992-06-17 | Olympus Optical Co Ltd | 自動分析装置用洗浄装置 |
JP2011179839A (ja) * | 2010-02-26 | 2011-09-15 | Shimadzu Corp | 試料導入装置 |
JP2011220928A (ja) * | 2010-04-13 | 2011-11-04 | Toshiba Corp | 自動分析装置 |
JP2012117945A (ja) * | 2010-12-02 | 2012-06-21 | Hitachi High-Technologies Corp | 液体クロマトグラフ,液体クロマトグラフ用試料導入装置、および液体クロマトグラフ用試料導入装置の洗浄方法 |
WO2013099660A1 (ja) * | 2011-12-26 | 2013-07-04 | 株式会社日立ハイテクノロジーズ | 自動分析装置及び試料分注プローブ洗浄方法 |
JP2014106213A (ja) * | 2012-11-30 | 2014-06-09 | Hitachi High-Technologies Corp | 液体クロマトグラフ用オートサンプラ |
CN105057294A (zh) * | 2015-07-31 | 2015-11-18 | 四川迈克生物医疗电子有限公司 | 样本针清洗方法、样本针清洗装置、样本分析仪 |
WO2017154083A1 (ja) * | 2016-03-07 | 2017-09-14 | 株式会社日立ハイテクノロジーズ | 分析装置 |
WO2020213061A1 (ja) * | 2019-04-16 | 2020-10-22 | 株式会社島津製作所 | クロマトグラフシステム、オートサンプラおよび洗浄方法 |
Also Published As
Publication number | Publication date |
---|---|
EP4266045A1 (en) | 2023-10-25 |
JPWO2022131153A1 (ja) | 2022-06-23 |
US20240094236A1 (en) | 2024-03-21 |
CN116583732A (zh) | 2023-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9308560B2 (en) | Clinical analyzer wash and method | |
JP5433580B2 (ja) | 試料注入システム | |
US7588725B2 (en) | High throughput autosampler | |
WO2011052445A1 (ja) | 液体試料分析装置及び液体試料導入装置 | |
WO2014097731A1 (ja) | 試料導入装置 | |
CN109100458B (zh) | 色谱自动进样器和自动进样方法 | |
WO2019043907A1 (ja) | オートサンプラ及び液体クロマトグラフ | |
WO2014021195A1 (ja) | 自動分析装置 | |
WO2022131153A1 (ja) | オートサンプラの流路洗浄方法及びオートサンプラの流路洗浄装置 | |
JP2014106213A (ja) | 液体クロマトグラフ用オートサンプラ | |
JP7357787B2 (ja) | 自動分析装置の制御方法 | |
EP3147027B1 (en) | Liquid dispensing method | |
JP7247286B2 (ja) | 試料注入器 | |
JP2002022754A (ja) | 分注装置 | |
JP2002062303A (ja) | 生化学自動分析装置 | |
JPS61213743A (ja) | 自動試料導入装置 |
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: 21906515 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022569945 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18038273 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180082208.0 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2021906515 Country of ref document: EP Effective date: 20230717 |