WO2025009299A1 - 液体クロマトグラフ装置、及び、その異常検知方法 - Google Patents
液体クロマトグラフ装置、及び、その異常検知方法 Download PDFInfo
- Publication number
- WO2025009299A1 WO2025009299A1 PCT/JP2024/020268 JP2024020268W WO2025009299A1 WO 2025009299 A1 WO2025009299 A1 WO 2025009299A1 JP 2024020268 W JP2024020268 W JP 2024020268W WO 2025009299 A1 WO2025009299 A1 WO 2025009299A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- liquid chromatograph
- abnormality
- chromatograph apparatus
- pressure sensor
- 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
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
-
- 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
-
- 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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
-
- 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
- G01N30/86—Signal analysis
-
- 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
Definitions
- the present invention relates to a liquid chromatograph device and an abnormality detection method thereof.
- liquid chromatography/mass spectrometry In testing centers and university hospitals, liquid chromatography/mass spectrometry (HPLC/MS) is used to perform tests for immunosuppressants, anticancer drugs, neonatal metabolic abnormality tests, and therapeutic drug monitoring (TDM). In order to reduce the variability in test results, the reproducibility and accuracy of the sample injection process into the liquid chromatography/mass spectrometry is important.
- Patent Document 1 discloses a technology for detecting pressure abnormalities such as clogged flow paths and leaks, which includes a pump pressure sensor that monitors the pressure in the flow path, an injection valve that switches between the liquid delivery path from the pump and the flow path from the syringe, a sample loop connected to the injection valve, a syringe that aspirates/discharges the sample, and a syringe pressure sensor that monitors the aspirating/discharging state of the syringe.
- a pump pressure sensor that monitors the pressure in the flow path
- an injection valve that switches between the liquid delivery path from the pump and the flow path from the syringe
- a sample loop connected to the injection valve
- a syringe that aspirates/discharges the sample
- a syringe pressure sensor that monitors the aspirating/discharging state of the syringe.
- Patent Document 1 when a pump pressure sensor that monitors the pressure in the flow path detects a pressure abnormality, the pump pressure sensor does not include a verification unit that verifies the abnormality based on the pressure value of a syringe pressure sensor that monitors the suction/discharge state of the syringe.
- the object of the present invention is to provide a liquid chromatograph device and a method for detecting anomalies in a liquid chromatograph device that can minimize sudden shutdowns due to breakdowns or malfunctions in the device or parts, economic losses due to lost opportunities, and health or other damage to workers or product users through predictive diagnosis.
- the present invention is configured as follows:
- the liquid chromatograph device includes a sipper that aspirates a specimen, a syringe that generates a negative pressure in a first pipe connected to the sipper in order to aspirate the specimen into the sipper, a pump that pumps out a diluent for diluting the specimen, a mixing section in which the diluent pumped by the pump and the specimen aspirated by the sipper are stored and mixed, a second pipe that connects the pump to the mixing section, a first pressure sensor that is disposed in the first pipe and detects the pressure in the first pipe, a second pressure sensor that is disposed in the second pipe and detects the pressure in the second pipe, and a verification section that verifies the abnormality based on the pressure detected by the second pressure sensor if the first pressure sensor detects an abnormality in pressure.
- a method for detecting an abnormality in a liquid chromatograph apparatus which generates negative pressure in a first pipe connected to a sipper, draws a specimen into the sipper, mixes the diluent pumped by the pump and the specimen drawn by the sipper in the mixing section via a second pipe connecting the pump and the mixing section, and sends the mixed diluent and specimen to a separation section, if a first pressure sensor that detects the pressure in the first pipe detects an abnormality in pressure, the abnormality is verified based on the pressure detected by a second pressure sensor that detects the pressure in the second pipe.
- the present invention provides a liquid chromatograph device and a method for detecting anomalies in a liquid chromatograph device that can minimize sudden shutdowns due to breakdowns or malfunctions in the device or parts, economic losses due to lost opportunities, and health or other damage to workers or users of the product through predictive diagnosis.
- FIG. 13 is a diagram showing pressure profiles before and after smoothing treatment. Schematic diagram of baseline correction.
- FIG. 11 is a flowchart of an abnormality detection process during sample injection. Schematic diagram of anomaly detection during sample injection.
- FIG. 1 is a schematic diagram of a liquid chromatograph/mass spectrometer (HPLC/MS) 1000.
- the liquid chromatograph mass spectrometer 1000 includes an injection unit 100, a separation unit 111 that separates samples, a detection unit 112, a verification unit 114, a control unit 601, and a display unit 116.
- the separation unit 111 includes a column.
- the control unit 601 controls the operations of the display unit 116, the injection unit 100, the separation unit 111, and the detection unit 112.
- the verification unit 114 detects abnormalities in the components of the injection unit 100 based on the pressure detected by the pressure sensor 107 (first pressure sensor) and the pressure sensor 108 (second pressure sensor) described below, and predicts the occurrence of failures, etc.
- the injection section 100 is composed of a shipper 102, a syringe 103, a first pipe 104, a pump 105, a second pipe 106, a pressure sensor 107 provided in the first pipe 104 to detect the pressure in the first pipe 104, a pressure sensor 108 provided in the second pipe 106 to detect the pressure in the second pipe 106, a sample loop 109, and a valve 110.
- the syringe 103 is a negative pressure generating source that generates negative pressure in the first pipe 104.
- the shipper 102 is connected to the first pipe 104, and negative pressure is generated in the first pipe 104 to aspirate the sample into the shipper 102.
- the specimen 101 is sucked into the shipper nozzle 102.
- the shipper 102 is connected to the valve 110 via a third pipe 113.
- the valve 110 is also connected to the syringe 103 via a second pipe 104 and a pressure sensor 107.
- the sample loop 109 is also connected to the tube 110.
- the valve 110 has two switching positions, position 1 and position 2, and in position 1, the shipper 102 is connected to the sample loop 109 (mixing section) and the syringe 103.
- the flow path from the pump 105 and the sample loop 109 are connected, so that the specimen 101 introduced into the sample loop 109 in position 1 is introduced into the separation section 111.
- the pump 105 pumps the diluent that dilutes the sample.
- the liquid chromatograph device is composed of an injection unit 100, a control unit 601, a verification unit 114, a display unit 116, and a separation unit 111.
- Figure 2 is a schematic diagram of the detection of an abnormality during sample suction (the change over time in the pressure value detected by the pressure sensor 107 provided in the first pipe 104).
- the detection of abnormalities during sample aspiration in Figure 2 is performed when the valve 110 is in position 1 as described above.
- the aspiration operation of the operation 201 of the syringe 103 has four steps.
- the first step is "air aspiration 202" to separate the specimen 101 from the solution in the piping to prevent dilution
- the second step is "specimen aspiration 203" to introduce the specimen 101 into the piping
- the third step is "loop aspiration 204" to aspirate air and transfer the specimen 101 introduced into the piping to the sample loop 109
- the fourth step is "residual liquid discharge 205" to push the specimen 101 remaining in the piping out of the piping.
- the verification unit 114 detects clogging and dry aspiration based on the pressure profiles at the two timings.
- the first timing is in the range ⁇ of 500 msec before the start of "air suction 202”
- the second timing is in the range ⁇ of 1000 msec to 1500 msec after the start of "loop suction 204".
- the pressure data v i acquired at each timing is analyzed in four steps.
- the four steps are pressure value conversion, smoothing, baseline correction, and data processing for each detection.
- the acquired pressure data v i is converted into a pressure value p ei in kPa.
- the fine dotted line 206 indicates the pressure profile under normal conditions
- the regular dotted line 207 indicates the pressure profile under dry suction
- the dashed and dotted line 208 indicates the profile under clogging.
- FIG. 3 shows a pressure profile 301 after the smoothing process and a pressure profile 302 before the smoothing process.
- the average value of the target point and 10 points before and after the target point (total of 21 points) is calculated.
- the smoothing process is not performed on pressure values p ei that do not satisfy the conditions, and the data of the relevant region is excluded from the analysis.
- the baseline correction process corrects the error in the pressure value in the baseline section.
- the baseline correction process will be explained using FIG. 4.
- FIG. 4 shows a pressure profile 401 before the baseline correction process and a pressure profile 402 after the baseline correction process.
- baseline correction is performed. Specifically, the average pressure value in the baseline section shown in the following formula (2) is calculated, and the average pressure value is subtracted from each data psi after smoothing to perform correction processing to calculate the corrected pressure pbi . However, if the average pressure value in the baseline section is an abnormal value (10 kPa or more or less than -10 kPa), the data in that region is excluded from the analysis.
- the average pressure Z CA in the abnormality detection data area is calculated in the range ⁇ from 1000 msec to 1500 msec after the start of the loop suction 204.
- the average pressure in the baseline data area is set to 0 kPa, if the average pressure Z CA ⁇ -50 kPa, it is determined that there is a blockage. If the average pressure is -50 kPa ⁇ Z CA ⁇ -10 kPa, it is determined that there is normal suction. If the average pressure Z CA >-10 kPa, it is determined that there is dry suction.
- the threshold value can be changed as appropriate depending on environmental conditions such as temperature and air pressure.
- the average pressure ZF in the abnormality detection data region is calculated within a range of 1000 msec from the start of residual liquid discharge.
- the average pressure in the baseline data region is 0 kPa
- if the average pressure ZF > 100 kPa it is determined to be normal. If ZF ⁇ 100 kPa, it is determined that the solenoid valve of the pump 105, which is a gear pump, has failed.
- the threshold value can be changed as appropriate depending on environmental conditions such as temperature and air pressure.
- the threshold value of the pressure sensor 107 provided in the first pipe 104 in the case of dry suction anomaly is Z CA > -10 kPa, and the threshold value under normal conditions is -50 kPa ⁇ Z CA ⁇ -10 kPa.
- a typical pressure value under normal conditions is -30 kPa ⁇ Z CA ⁇ -20 kPa, and when the calculated value is approximately -20 kPa ⁇ Z CA ⁇ -10 kPa, this is not an anomaly during dry suction when the solution in the first pipe 104 has been completely emptied, but there is a possibility that some air bubbles have been mixed in the first pipe 104.
- the accuracy of anomaly detection can be improved by implementing anomaly detection using other methods in addition to detecting anomalies during sample suction using the pressure sensor 107 provided in the first pipe 104.
- a method using a pressure sensor 108 provided in the second pipe 106 will be described.
- FIG. 5 and 6 are used to explain the abnormality detection process during specimen injection (when the specimen contained in the sample probe (mixing section) is supplied to the separation section 111) using the pressure sensor 108 provided in the second pipe 106.
- FIG. 5 is a flowchart of the abnormality detection process during specimen injection (pressure sensor 108 provided in the second pipe 106).
- FIG. 6 is a schematic diagram of abnormality detection during specimen injection (pressure sensor 108 provided in the second pipe 106).
- the abnormality detection process is performed based on the pressure value of the pressure sensor 108 provided in the second pipe 106.
- the pressure measurement section in which the pressure sensor 108 detects the pressure starts when the specimen contained in the sample loop 109, which is the mixing section, is supplied to the separation section 111.
- step S1 When sample measurement is started in step S1 in FIG. 5, a pressure measurement command is sent from the control unit 601 to the injection unit 100 in step S2. Then, in step S7, pressure value information from the pressure sensor 108 is sent to the verification unit 114. Next, in step S3, a pressure value is calculated based on the pressure information from the pressure sensor 108.
- step S4 the verification unit 114 determines whether the calculated pressure value is within the threshold value. If it is not within the threshold value, the process proceeds to step S8, where the verification unit 114 transmits information to the control unit 601 that the pressure value is not within the threshold value. In accordance with the information from the verification unit 114, the control unit 601 causes the display unit 116 to display an alarm notifying the user that an abnormality has occurred during sample injection. Then, the process proceeds to step S5.
- step S4 if the calculated pressure value is within the threshold value, the process proceeds to step S5, where the injection pressure value is output. Then, the process proceeds to step S6, where the sample measurement is completed.
- a pressure measurement command 603 is sent from the control unit 601 of this automatic analyzer to the pump firmware 602 together with an arbitrarily set pressure measurement section and pressure measurement time.
- the pump firmware 602 calculates the maximum, minimum and average pressure values in each of the pressure measurement sections (1) 606, pressure measurement section (2) 607, pressure measurement section (3) 608, pressure measurement section (4) 609 and pressure measurement section (5) 610, and after all sections are completed, five sets of the calculated values are sent back to the control unit 601. Of the five sets of maximum, minimum and average values returned to the control unit 601, the data set corresponding to the measurement section (pmtime1) 606 is used as the calculation target, and the pressure value ZG is calculated using the following equation (3).
- the pressure sensor 108 installed in the second pipe 106 judges there to be an abnormality during sample injection, the abnormal state is displayed on the GUI screen (display unit 116) of the control unit 601, and the user is notified of the abnormality during sample injection as a system alarm. At the same time, a data alarm is added to the test results for the corresponding sample on the GUI screen. The user will recognize that there is an abnormality in the test data and will perform a retest or discard the data.
- the pressure sensor 107 installed in the first pipe 104 detects an abnormality during sample suction
- the abnormality is displayed on the GUI screen of the control unit 601, and the user is notified of the abnormality during sample suction as a system alarm.
- the occurrence of dry suction can be determined by detecting abnormalities during sample suction using the pressure sensor 107 installed in the first pipe 104, and detecting abnormalities during specimen injection using the pressure sensor 108 installed in the second pipe 106.
- the calculated pressure value of the pressure sensor 107 installed in the first pipe 104 is 100 kPa or less
- the calculated pressure value of the pressure sensor 108 installed in the second pipe 106 is several MPa or less, which is a pressure difference of about 10 times, allowing for a clearer determination of the presence or absence of abnormalities.
- the pressure information acquired by the pressure sensor 107 provided on the first pipe 104 and the pressure sensor 108 provided on the second pipe 106 is stored in the database of the control unit 601.
- an internal standard substance is dispensed in a pre-processing step.
- the internal standard substance to be dispensed is prepared for each substance to be measured contained in the sample 101, and a specified amount of the internal standard substance of a known concentration is dispensed into the sample 101.
- a QC measurement is periodically performed using a QC sample that contains a substance to be measured of a known concentration.
- dry suction anomalies can also be detected from the peak intensities of the chromatograms of the substance to be measured and the internal standard output during QC measurement. If a dry suction anomaly occurs during sample aspiration, and valve 110 is switched to position 2 with air bubbles remaining in sample loop 109, the peak intensities of the chromatograms of both the substance to be measured and the internal standard will be lower than normal. If normal chromatogram intensities are obtained for either the substance to be measured or the internal standard, it can be determined that an anomaly occurred during dispensing in the pretreatment process.
- this embodiment is configured as described above, it is possible to provide a liquid chromatograph device and a method for detecting anomalies in a liquid chromatograph device that can minimize sudden shutdowns due to breakdowns or malfunctions in the device or parts, economic losses due to lost opportunities, and health or other damage to workers or users of the product through predictive diagnosis.
- This type of predictive diagnosis can minimize sudden shutdowns due to failures or malfunctions in equipment or parts, economic losses due to lost opportunities, and health or other damage to workers or product users.
- Another feature of the algorithm for syringe suction using pressure sensor 107 is that it is possible to detect suction abnormalities such as blockages and dry suction by comparing the difference between the pressure information during loop suction and the baseline pressure information before suction. At the same time, it is possible to detect injection abnormalities by comparing the difference between the maximum and minimum values obtained during injection at pressure sensor 108 of pump 105 with normal pressure information.
- these functions can be used to help reduce the cost of liquid chromatography equipment, and can also be used to estimate the cause of any abnormalities that may occur.
- the present invention is not limited to the above-described embodiment, but includes various modifications and combinations that do not deviate from the gist of the invention.
- the present invention is not limited to having all of the configurations described in the above embodiments, but also includes configurations in which some of the configurations are omitted.
- each of the above configurations, functions, etc. may be realized in software by a processor interpreting and executing a program that realizes each function.
- 100 injection section, 101: sample, 102: sipper, 103: syringe, 104: first pipe, 105: pump, 106: second pipe, 107: pressure sensor provided in first pipe, 108: pressure sensor provided in second pipe, 109: sample loop (mixing section), 110: valve, 111: separation section, 112: detection section, 113: third pipe, 114: verification section, 116: display section, 201: syringe suction, 202: when air is suctioned, 203: when sample is suctioned, 204: when loop suction is performed, 205: when residual liquid is discharged, 206: pressure profile under normal conditions, 207: when empty suction is performed Pressure profile, 208... Pressure profile when clogged, 301...
- Pressure profile before smoothing 302... Pressure profile after smoothing, 401... Pressure profile before baseline correction, 402... Pressure profile before and after baseline correction, 601... Control unit, 602... Pump firmware, 603... Pressure measurement command, 604... Pressure result command, 605... Pressure profile, 606... Pressure measurement section 1, 607... Pressure measurement section 2, 608... Pressure measurement section 3, 609... Pressure measurement section 4, 610... Pressure measurement section 5, 1000... Liquid chromatograph mass spectrometer
Landscapes
- Physics & Mathematics (AREA)
- General 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)
- Immunology (AREA)
- Pathology (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
算出した圧力値ZG>15MPaの場合は、検体インジェクション時の異常と判定する。本異常が発生するときは、サンプル吸引時に空吸い異常がおこり、サンプルループ109内に気泡が残存した状態でバルブ110がポジション2に切り替えた場合におこる現象である。閾値については、気温及び気圧等の環境条件によって適宜変更可能である。
Claims (16)
- 検体を吸引するシッパと、
前記シッパに検体を吸引するため、前記シッパが連通する第一の配管に負圧を発生させる負圧発生源であるシリンジと、
前記検体を希釈する希釈液を圧送するポンプと、
前記ポンプで圧送された前記希釈液と前記シッパで吸引された前記検体とが収容されて混合される混合部と、
前記ポンプと前記混合部を連通する第二の配管と、
前記第一の配管に配置され、前記第一の配管内の圧力を検出する第一の圧力センサと、
前記第二の配管に配置され、前記第二の配管内の圧力を検出する第二の圧力センサと、
前記第一の圧力センサが圧力の異常を検出した場合は、前記第二の圧力センサが検出した圧力に基づき、異常を検証する検証部と、
を備えることを特徴とする液体クロマトグラフ装置。 - 請求項1に記載の液体クロマトグラフ装置において、
前記検証部は、前記第一の圧力センサのベースタライン区間の圧力平均値と、前記混合部への検体導入時の圧力平均値と、の差圧に基づいて異常を検証することを特徴とする液体クロマトグラフ装置。 - 請求項1または請求項2に記載の液体クロマトグラフ装置において、
前記検証部は、前記第二の圧力センサの圧力測定区間の圧力値の最大値と、圧力値の最小値と、の差圧に基づいて異常を検証することを特徴とする液体クロマトグラフ装置。 - 請求項1に記載の液体クロマトグラフ装置において、
前記検証部は、前記第一の圧力センサのベースタライン区間の圧力平均値と前記混合部への検体導入時の圧力平均値との差圧と、前記第二の圧力センサの圧力測定区間の圧力値の最大値と圧力値の最小値との差圧と、に略10倍の圧力差があることを特徴とする液体クロマトグラフ装置。 - 請求項3に記載の液体クロマトグラフ装置において、
前記検証部は、前記第一の圧力センサのベースタライン区間の圧力平均値と前記混合部への検体導入時の圧力平均値との差圧と、前記第二の圧力センサの圧力測定区間の圧力値の最大値と圧力値の最小値との差圧と、に略10倍の圧力差があることを特徴とする液体クロマトグラフ装置。 - 請求項1に記載の液体クロマトグラフ装置において、
検体を分離する分離部を備え、前記第二の圧力センサが圧力を検出する圧力測定は、前記混合部に収容された前記検体の、前記分離部への供給時に開始されることを特徴とする液体クロマトグラフ装置。 - 請求項1に記載の液体クロマトグラフ装置において、
前記検証部は、前記第一の圧力センサが検出した圧力値から、検体の空吸いまたは前記第一の配管内の詰まりを検知し、前記第二の圧力センサが検出した圧力から、検体の空吸いを検知することを特徴とする液体クロマトグラフ装置。 - 請求項1に記載の液体クロマトグラフ装置において、
前記検証部からの情報に従って、異常が発生したことを知らせるアラームを表示する表示部を備えることを特徴とする液体クロマトグラフ装置。 - シッパが連通する第一の配管に負圧を発生させ、前記シッパに検体を吸引し、
ポンプと混合部を連通する第二の配管とを介して前記ポンプで圧送された希釈液とシッパで吸引された前記検体とを前記混合部で混合し、
混合した前記希釈液と前記検体とを分離部に送液する液体クロマトグラフ装置の異常検知方法において、
前記第一の配管内の圧力を検出する第一の圧力センサが圧力の異常を検出した場合は、前記第二の配管内の圧力を検出する第二の圧力センサが検出した圧力に基づき、異常を検証することを特徴とする液体クロマトグラフ装置の異常検知方法。 - 請求項9に記載の液体クロマトグラフ装置の異常検知方法において、
前記第一の圧力センサのベースタライン区間の圧力平均値と、前記混合部への検体導入時の圧力平均値と、の差圧に基づいて異常を検証することを特徴とする液体クロマトグラフ装置の異常検知方法。 - 請求項9または請求項10に記載の液体クロマトグラフ装置の異常検知方法において、
前記第二の圧力センサの圧力測定区間の圧力値の最大値と、圧力値の最小値と、の差圧に基づいて異常を検証することを特徴とする液体クロマトグラフ装置の異常検知方法。 - 請求項9に記載の液体クロマトグラフ装置の異常検知方法において、
前記第一の圧力センサのベースタライン区間の圧力平均値と前記混合部への検体導入時の圧力平均値との差圧と、前記第二の圧力センサの圧力測定区間の圧力値の最大値と圧力値の最小値との差圧と、に略10倍の圧力差があることを特徴とする液体クロマトグラフ装置の異常検知方法。 - 請求項11に記載の液体クロマトグラフ装置の異常検知方法において、
前記第一の圧力センサのベースタライン区間の圧力平均値と前記混合部への検体導入時の圧力平均値との差圧と、前記第二の圧力センサの圧力測定区間の圧力値の最大値と圧力値の最小値との差圧と、に略10倍の圧力差があることを特徴とする液体クロマトグラフ装置の異常検知方法。 - 請求項9に記載の液体クロマトグラフ装置の異常検知方法において、
前記第二の圧力センサが圧力を検出する圧力測定は、前記混合部に収容された前記検体の、検体を分離する分離部への供給時に開始されることを特徴とする液体クロマトグラフ装置の異常検知方法。 - 請求項9に記載の液体クロマトグラフ装置の異常検知方法において、
前記第一の圧力センサが検出した圧力値から、検体の空吸いまたは前記第一の配管内の詰まりを検知し、前記第二の圧力センサが検出した圧力から、検体の空吸いを検知することを特徴とする液体クロマトグラフ装置の異常検知方法。 - 請求項9に記載の液体クロマトグラフ装置の異常検知方法において、
異常が発生したことを知らせるアラームを表示することを特徴とする液体クロマトグラフ装置の異常検知方法。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2025531425A JPWO2025009299A1 (ja) | 2023-07-06 | 2024-06-03 | |
| CN202480043694.9A CN121443948A (zh) | 2023-07-06 | 2024-06-03 | 液相色谱装置及其异常检知方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023111777 | 2023-07-06 | ||
| JP2023-111777 | 2023-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025009299A1 true WO2025009299A1 (ja) | 2025-01-09 |
Family
ID=94172006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2024/020268 Ceased WO2025009299A1 (ja) | 2023-07-06 | 2024-06-03 | 液体クロマトグラフ装置、及び、その異常検知方法 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2025009299A1 (ja) |
| CN (1) | CN121443948A (ja) |
| WO (1) | WO2025009299A1 (ja) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100024906A1 (en) * | 2005-10-27 | 2010-02-04 | Waters Investments Limited | Pump |
| US20130327692A1 (en) * | 2010-10-29 | 2013-12-12 | John E. Brann | Method and System for Liquid Chromatograph with Compressibility and Viscosity Monitoring to Identify Fluids |
| JP2015114120A (ja) * | 2013-12-09 | 2015-06-22 | 日立アロカメディカル株式会社 | 送液装置および送液装置の配管を液体で満たす方法 |
| JP2021081213A (ja) * | 2019-11-14 | 2021-05-27 | 株式会社島津製作所 | 血液凝固分析装置、及び分注ノズルの洗浄方法 |
| WO2021187172A1 (ja) * | 2020-03-19 | 2021-09-23 | 株式会社日立ハイテク | 液体クロマトグラフ装置および液体クロマトグラフ装置の気泡除去方法 |
| US20220229028A1 (en) * | 2021-01-18 | 2022-07-21 | Dionex Softron Gmbh | Monitoring sample injectors |
| WO2022230282A1 (ja) | 2021-04-27 | 2022-11-03 | 株式会社日立ハイテク | 自動分析装置 |
-
2024
- 2024-06-03 CN CN202480043694.9A patent/CN121443948A/zh active Pending
- 2024-06-03 JP JP2025531425A patent/JPWO2025009299A1/ja active Pending
- 2024-06-03 WO PCT/JP2024/020268 patent/WO2025009299A1/ja not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100024906A1 (en) * | 2005-10-27 | 2010-02-04 | Waters Investments Limited | Pump |
| US20130327692A1 (en) * | 2010-10-29 | 2013-12-12 | John E. Brann | Method and System for Liquid Chromatograph with Compressibility and Viscosity Monitoring to Identify Fluids |
| JP2015114120A (ja) * | 2013-12-09 | 2015-06-22 | 日立アロカメディカル株式会社 | 送液装置および送液装置の配管を液体で満たす方法 |
| JP2021081213A (ja) * | 2019-11-14 | 2021-05-27 | 株式会社島津製作所 | 血液凝固分析装置、及び分注ノズルの洗浄方法 |
| WO2021187172A1 (ja) * | 2020-03-19 | 2021-09-23 | 株式会社日立ハイテク | 液体クロマトグラフ装置および液体クロマトグラフ装置の気泡除去方法 |
| US20220229028A1 (en) * | 2021-01-18 | 2022-07-21 | Dionex Softron Gmbh | Monitoring sample injectors |
| WO2022230282A1 (ja) | 2021-04-27 | 2022-11-03 | 株式会社日立ハイテク | 自動分析装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2025009299A1 (ja) | 2025-01-09 |
| CN121443948A (zh) | 2026-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9110042B2 (en) | Clinical specimen processing apparatus and clinical specimen processing system | |
| US9335335B2 (en) | Automatic analyzer | |
| JP6602753B2 (ja) | 自動分析装置 | |
| US9482682B2 (en) | Reagent preparation apparatus and sample processing apparatus | |
| JP6076108B2 (ja) | 自動分析装置 | |
| JP7550970B2 (ja) | 自動分析装置 | |
| WO2013031416A1 (ja) | 自動分析装置 | |
| US20220099656A1 (en) | Method of detecting the presence or absence of a clot in a liquid sample analyzer | |
| JP5975772B2 (ja) | 自動分析装置 | |
| JP7527893B2 (ja) | 分析装置の状態をチェックする技術 | |
| WO2019211930A1 (ja) | オートサンプラ及び液体クロマトグラフ | |
| US12038417B2 (en) | Liquid sending system for liquid chromatograph | |
| JP2017106791A (ja) | 自動分析装置及び自動分析装置の異常判定方法 | |
| WO2025009299A1 (ja) | 液体クロマトグラフ装置、及び、その異常検知方法 | |
| US20240360826A1 (en) | Inspection method | |
| JP7547613B2 (ja) | 自動分析装置 | |
| JP2011137676A (ja) | 分注装置,自動分析装置、および液量測定方法 | |
| WO2025018126A1 (ja) | 分析装置および異常の有無を判定する方法 | |
| EP3761038B1 (en) | Techniques for checking state of analyzers | |
| CN117136301A (zh) | 具有hplc的自动分析装置以及该自动分析装置的控制方法 | |
| EP4446732A1 (en) | Method for controlling liquid chromatograph | |
| US20250123177A1 (en) | Liquid delivery abnormality diagnosis method and liquid chromatograph | |
| US11921094B2 (en) | Liquid chromatographic system | |
| JP2010060526A (ja) | 生体試料検査装置 | |
| WO2024247515A1 (ja) | 自動分析装置及びそれを用いた測定方法 |
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: 24835819 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2025531425 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025531425 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024835819 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2024835819 Country of ref document: EP Effective date: 20260206 |

