WO2023106039A1 - 自動分析装置 - Google Patents
自動分析装置 Download PDFInfo
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- WO2023106039A1 WO2023106039A1 PCT/JP2022/042161 JP2022042161W WO2023106039A1 WO 2023106039 A1 WO2023106039 A1 WO 2023106039A1 JP 2022042161 W JP2022042161 W JP 2022042161W WO 2023106039 A1 WO2023106039 A1 WO 2023106039A1
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- reagent
- probe
- liquid
- automatic analyzer
- liquid level
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- 238000004458 analytical method Methods 0.000 title abstract description 9
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 203
- 239000007788 liquid Substances 0.000 claims abstract description 109
- 239000000523 sample Substances 0.000 claims abstract description 86
- 230000005856 abnormality Effects 0.000 claims abstract description 28
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Images
Classifications
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- 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
- G01N35/1002—Reagent dispensers
-
- 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
-
- 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
- G01N2035/1025—Fluid level sensing
Definitions
- the present invention relates to an automatic analyzer.
- Patent Document 1 describes an automatic analyzer that can detect with high accuracy erroneous detection of the liquid level caused by bubbles generated on the surface of the liquid.
- the present invention provides an automatic analyzer that can reduce the consumption of consumables that occurs during reagent registration compared to the past.
- the present invention includes a plurality of means for solving the above problems.
- One example of such means is a probe for dispensing liquid contained in a container, a detection unit for detecting the liquid level of the liquid, and the The probe is lowered in the direction of the liquid, the descent of the probe is stopped at a first position higher than the assumed liquid level by a first predetermined value, and the detection is performed at the first position.
- the determination unit determines that there is no abnormality in the liquid when the liquid level is not detected by the unit, and determines that there is an abnormality in the liquid when the liquid surface is detected by the detection unit before reaching the first position. and.
- FIG. 1 is a diagram showing the configuration of an automatic analyzer of Example 1.
- FIG. 4 is a diagram showing the configuration of a dispensing unit in the automatic analyzer of Example 1.
- FIG. 4 is a diagram showing an abnormality detection method using theoretical liquid level information of the automatic analyzer of Embodiment 1;
- Foam detection workflow when using a disposable chip in the automatic analyzer of Example 1.
- Foam detection workflow when using the probe in the automatic analyzer of Example 2.
- Example 1 A first embodiment of the automatic analyzer will be described with reference to FIGS. 1 to 5.
- FIG. 1 A first embodiment of the automatic analyzer will be described with reference to FIGS. 1 to 5.
- FIG. 1 is a schematic plan view of an automatic analyzer.
- the automatic analyzer 101 includes a reagent disk 103, an RFID reader/writer 105, a dispensing unit 106, a washing tank 108, an incubator (reaction disk) 110, a chip sensor 112, a transport device 116, an interface 117, A control device 118 and the like are provided.
- the incubator 110 has the reaction vessels 109 for discharging the dispensed solution arranged on a circumference.
- a reaction vessel 109 is used in common for all reactions and is disposable.
- the incubator 110 is controlled by a driving mechanism such as a motor so as to rotate the incubator 110 a distance corresponding to a predetermined number of reaction containers 109 in one cycle.
- a reagent disk 103 for installing a plurality of reagent containers 102 is provided on the device.
- the reagent container 102 is composed of three reagent bottles 104 arranged in a line.
- An IC tag 119 capable of contactless information communication by RFID (Radio Frequency Identifier) is attached to the outer wall of the reagent container 102, and an RFID reader for reading the information in the IC tag 119 is attached to the shaft side of the reagent disk 103.
- One writer 105 is provided.
- the RFID reader/writer 105 reads unique reagent information such as the initial filling amount of the reagent recorded in the IC tag 119, and the judgment unit 118f of the control device 118 judges whether the reagent container 102 can be used. Recorded in the storage unit 118d.
- the IC tag 119 attached to the reagent container 102 contains at least an item ID unique to the reagent item, a sequence ID unique to the reagent container 102, and a usage history parameter for determining whether or not the reagent has been used.
- the usage history parameter includes two types of information: unused and in use.
- a reagent information file containing reagent information is stored in advance in the storage unit 118d of the controller 118.
- the reagent information file describes the item ID of the reagent and the filling amount of the reagent in the reagent bottle 104 corresponding to the reagent item. ing.
- a rotatable and vertically movable pipetting unit 106 is installed, and has a probe 201 that can access the inside of the reagent bottle 104. Since it is highly necessary to prevent contamination between reagents in the pipetting unit 106, a disposable tip 111 is used for pipetting.
- the dispensing unit 106 comprises a probe 201, an arm 202 and an arm shaft 203, and the arm shaft 203 is fixed to a base 204.
- the probe 201 can be rotated in the .theta. direction around the arm shaft 203, and the probe 201 can be driven up and down in the Z direction.
- the probe 201 moves in a circular arc about the rotation axis, sucks the reagent 205 contained in the reagent bottle 104 of the reagent container 102 , and discharges the reagent into the reaction container 109 .
- a capacitance sensor 206 for detecting a change in capacitance when the tip of the disposable tip 111 comes into contact with the reagent 205 in the reagent container 102 is located in the arm 202. , and the position in the height direction of the liquid surface can be confirmed.
- the probe 201 is made of a conductive metal member, while the disposable tip 111 is made of a conductive resin material.
- a tip sensor 112 for detecting the presence or absence of a disposable tip 111 attached to the probe 201 is provided around the movement trajectory of the probe 201 of the dispensing unit 106 .
- a tip disposal location 114 is present.
- a plurality of unused disposable chips 111 are arranged on a magazine 115, and a transport device 116 that operates in XYZ directions is provided to transport the disposable chips 111 from the magazine 115 to a chip supply position 113.
- the probe 201 or the disposable tip 111 is aspirated and discharged in the reaction container 109 installed in the incubator 110, and reacts at another timing in advance.
- the sample and reagent dispensed into the container 109 are stirred and mixed.
- a reaction container 109 containing a reaction liquid in which a specimen and a reagent are mixed is controlled at a predetermined temperature by an incubator 110, and the reaction is accelerated for a predetermined period of time.
- a spectrophotometer (not shown) for biochemical testing is arranged around the incubator 110 .
- a spectrophotometer measures the absorbance of a reaction solution by irradiating a light source on a reaction solution in which a specimen and a reagent are mixed and detecting transmitted light obtained by spectroscopically.
- the reaction liquid that has been reacted for a predetermined time by the incubator 110 can be brought to the detection mechanism (not shown) for immunological test by a detector syringe (not shown) for measurement.
- a detector syringe not shown
- immunoassays there are methods based on the principle of electrochemiluminescence or chemiluminescence as methods for detecting labeling substances. Suitable second liquid containers, labeling substances, structure and physical properties of the detection region are selected for each method, and the labeling substances are selected.
- a photomultiplier tube is used as a detector to measure the amount of light emitted from the light emission reaction.
- the reaction container 109 whose absorbance measurement has been completed in the incubator 110 is discarded to the chip disposal position 114 by the transport device 116 .
- the movement of the reaction container 109 containing the reaction solution that has been reacted for a predetermined time by the incubator 110 to the detection mechanism, and the movement of the reaction container 109 that has completed the measurement by the detection mechanism to the chip disposal position 114 are also carried out by the transfer device 116 . Discarded at disposal location 114 .
- Each unit in the automatic analyzer 101 described above is connected to the controller 118 via the interface 117 .
- the control device 118 is a computer equipped with a CPU, memory, etc., is connected to the devices in the automatic analyzer 101 described above, and controls the operation of each device and mechanism in the automatic analyzer 101 .
- connection between each mechanism constituting the automatic analyzer 101 and the control device 118 is omitted.
- the control device 118 is composed of an operation section 118a, a control section 118b, a display section 118c, a storage section 118d, a calculation section 118e, and a determination section 118f.
- the operation unit 118a is an operation device, such as a keyboard and a mouse, operated by the user of the automatic analyzer 101 when inputting an instruction or the like to the apparatus.
- the control unit 118b controls the rotational driving of the incubator 110, the rotational movement of the reagent disk 103, the driving of the dispensing unit 106 including the probe 201, the reagent aspiration, and the reagent ejection. Control of the operation of each device by the control unit 118b is executed based on various programs recorded in the storage unit 118d.
- control processing executed by the control unit 118b may be integrated into one program, may be divided into a plurality of programs, or may be a combination thereof. Also, part or all of the program may be realized by dedicated hardware, or may be modularized.
- the display unit 118c is a display device such as a liquid crystal display that displays to the operator various information in the automatic analyzer 101, such as input screens for various parameters and settings, analytical test data of the first test or retest, measurement results, and reagent information. is.
- a touch panel type that also serves as the control unit 118b can be used.
- the storage unit 118d stores various programs used for sample measurement, various parameters input via the operation unit 118a, information on the sample to be measured (sample type information, etc.), measurement results, etc. It is composed of a storage medium such as an SSD.
- the storage unit 118 d also stores information necessary for controlling the automatic analyzer 101 , the current status of the automatic analyzer 101 , etc., and affects the operation of the control device 118 .
- information on a first position PT that is higher than a liquid level value P0 which is assumed to be the height of the liquid level described later, by a first predetermined value Db
- information on a first position PT that is higher than the first position PT by a second predetermined value It is assumed that information such as a second position P F , a third position P H higher than the second position P F by a third predetermined value, a fourth position higher than the third position P H by a third predetermined value, etc. is stored. .
- the computation unit 118e performs computation processing to obtain the concentration of a predetermined component in the specimen from the detection results of the spectrophotometer and the detection mechanism. This is a portion for determining whether the IC tag 119 read by the RFID reader/writer 105 can be used for sample measurement when the unique information of the reagent of the IC tag 119 is successfully read. If the determination is normally performed, the reagent container 102 is registered in the storage unit 118d.
- the determination unit 118f lowers the probe 201 in the direction of the reagent 205, and moves the probe 201 to the first position P which is higher than the liquid level P0 , which is assumed to be the liquid level, by the first predetermined value Db .
- the descent of the probe 201 is stopped at T , and the liquid surface is not detected by the capacitance sensor 206 at the first position PT , it is determined that the reagent 205 is normal .
- the capacitance sensor 206 detects the liquid level, it is determined that the reagent 205 is abnormal. The details will be described later.
- FIG. 1 does not explain the dispensing position of the specimen, for example, the reagent container and the specimen container containing the specimen can be stored in one disk.
- the dispensing unit can be provided with one or more dedicated dispensing units for reagent dispensing and one or more dedicated dispensing units for sample dispensing. It is preferable that the units are arranged or have operation parameters set so that their operations do not overlap each other.
- the configuration of the automatic analyzer 101 is not limited to the form shown in FIG. It can be an analysis device that executes analysis of various analysis items.
- an analytical instrument for measuring other analysis items, such as electrolytes can be separately installed.
- the automatic analyzer 101 is not limited to the configuration of a single analysis module as shown in FIG. can be configured to connect two or more.
- the shape of the reagent container 102 is defined, and the liquid level detection position (P d ) can be converted to the filling amount (V) of the reagent 205 by a conversion formula.
- the initial liquid level position (P 0 ) obtained from the known initial filling amount V 0 of the reagent 205 is converted to the initial liquid level position (P 0 ), and the difference from the actual liquid level detection position (P d ) is used to determine the liquid level.
- Abnormal surface conditions can be determined.
- the difference threshold is defined as P d ⁇ P 0 ⁇ 3 [mm]
- the disposable tip 111 When detecting an abnormality by attaching a disposable chip 111 to the tip of the probe 201, one or more disposable chips 111 are consumed. In addition, the disposable tip 111 must be replaced for each reagent bottle 104 so that the reagent 205 adhering to the disposable tip 111 does not mix with other reagent bottles 104 and carry over. Alternatively, it is necessary to wash the tip of the disposable tip 111 with a washing liquid. In the case of the probe 201 without the disposable tip 111 attached to the tip thereof (embodiment of Example 2 described later), it is necessary to wash the probe 201 each time the liquid level is detected in order to avoid carryover between the reagent bottles 104 as well. .
- the probe 201 descends upward from the liquid surface to a position 3 [mm] higher than P0 . Therefore, the probe 201 does not come into contact with the reagent 205 in the reagent bottle 104 until it stops after the downward movement. If the liquid level is not detected while this downward movement is being performed, the judging section 118f judges that there is no abnormality in the reagent bottle 104, for example, that there is no bubble or liquid film and that the bottle is normal. It turns out that there is no problem.
- the determining unit 118f detects the liquid level between the narrow part of the entrance of the reagent bottle 104 (the second position P F which is higher than the first position P T by a second predetermined value) and the first position P T , It is determined that there is an abnormality because there is a high possibility that bubbles (foam) are generated in the reagent 205 .
- the determining unit 118f detects the liquid level between a third position PH which is higher than the second position PF by a third predetermined value and the second position PF , that is, at a narrow portion at the inlet of the reagent bottle 104, Since there is a high possibility that film-like bubbles (film, liquid film) of the reagent 205 are generated in the narrow portion of the entrance of the reagent bottle 104, it is determined that there is an abnormality.
- determination unit 118f moves from a position higher than the inlet of reagent bottle 104 (fourth position (P max ) higher than third position P H by a third predetermined value) to the inlet of reagent bottle 104 (third position P H ).
- hovering that is, the electrostatic capacitance sensor 206, which is the liquid level detection mechanism, is abnormal.
- the initial filling amount V0 varies depending on the type of reagent, it is desirable to use information read from the IC tag 119, and it is assumed that it varies depending on the type of reagent.
- the first position P T , the second position P F , and the third position P H may not be changed depending on the type of reagent, but may be changed depending on the type of reagent or the shape of the reagent bottle 104 . not.
- FIG. 5 is a foam detection workflow diagram when using a disposable chip.
- the automatic analyzer 101 of this embodiment it is necessary to recognize and register the reagent container 102 corresponding to the item to be measured for the sample. Therefore, as shown in FIG. 5, the reagent registration operation is started (step (hereinafter referred to as “S”) 101). It is assumed that the reagent container 102 is composed of three reagent bottles 104 as described above.
- IC tag 119 is started to be read by RFID reader/writer 105 (S102).
- the determination unit 118f determines whether or not the unique information has been read successfully and the read item ID matches the item ID stored in advance in the storage unit 118d (S103). If it is determined that they match, the process proceeds to S105. On the other hand, when it is determined that they do not match, the process proceeds to S104, an alarm is displayed on the display unit 118c (S104), and the registration process is completed.
- the determination unit 118f can read the reagent filling amount specific to the reagent item, updates the information of the IC tag 119 (S105), and determines whether the reagent is registered for the first time. Determine (S106). When it is determined that it is not the first registration, the reagent registration processing is ended.
- the probe 201 is moved to the tip supply position 113 and the disposable tip 111 is attached (S108).
- the probe 201 with the disposable tip 111 attached is moved to the position of the tip sensor 112, and the presence or absence of the disposable tip 111 is determined (S109). If it is determined that the disposable chip 111 is not attached, the reagent registration process is terminated.
- the probe 201 is moved to the suction position of the first reagent bottle 104 of the reagent container 102, and the amount of reagent filled in the first reagent bottle 104 is adjusted. is lowered by the amount of movement (S110).
- the process proceeds to S113 and moves to the suction position of the second reagent bottle 104 (S113).
- the reagent disk 103 rotates to move the second reagent bottle 104 to the suction position for the second reagent bottle 104, and the process returns to S109, moves to the tip sensor 112, and determines whether or not there is a tip (S109). Again, it descends by the movement amount corresponding to the reagent filling amount corresponding to the reagent filling amount of the second reagent bottle 104 (S110).
- liquid surface detection is not performed from the start of the lowering operation until the end of the lowering operation as in the case of the first reagent bottle 104 (no in S111), it is determined that bubbles are not mixed in the second reagent bottle 104 either. . Thereafter, it is determined whether or not the next reagent bottle 104 needs to be registered (S112), moves to the suction position (S113), and determines whether or not the third reagent bottle 104 is abnormal (S109 to S109). S111).
- the probe 201 does not discard the disposable tip 111, and the first reagent bottle of the second reagent container 102 is registered. 104 foam determination operation is started. Even if there is a third or subsequent reagent, the same disposable chip 111 can be used to perform foam determination.
- an alarm is displayed on the display unit 118c (S117), indicating that the reagent container 102 in question has been determined to contain bubbles. Display a message prompting you to confirm, remove and re-register.
- the reagent disk 103 is rotated and moved to the suction position of the reagent bottle 104 (S119).
- the probe 201 is gripped and installed at the tip supply position 113, and the probe 201 is moved to the tip supply position 113 to attach the disposable tip 111 (S108), and the foam determination of the reagent container 102 for which the foam detection operation has not been performed is started ( after S109).
- the automatic analyzer 101 of the first embodiment described above includes a probe 201 for dispensing the reagent 205 contained in the container, a capacitance sensor 206 for detecting the liquid level of the reagent 205, and the probe 201 in the direction of the reagent 205.
- the descent of the probe 201 is stopped at a first position PT that is higher than the liquid level value P0 assumed to be the liquid level by a first predetermined value Db , and the electrostatic capacitance is stopped at the first position PT .
- the frequency of cleaning the probe 201 during reagent registration or the frequency of replacing the disposable tip 111 can be made lower than before when the function of performing bubble detection during reagent registration is provided.
- the consumption of consumables can be reduced compared to the conventional method.
- a function for performing foam detection at the time of reagent registration can be installed, it is possible to prevent foam determination from being performed after the start of measurement, and further delay in inspection can be prevented.
- the determination unit 118f determines that bubbles are generated in the reagent 205 when the liquid level is detected between the first position PT and the second position PF , which is higher than the first position PT by the second predetermined value.
- the liquid level is detected between the second position PF and the third position PH , which is higher than the second position PF by a third predetermined value, it is determined that a film of the reagent 205 is formed on the container. For the determination, it is also possible to determine what kind of abnormality has occurred in the reagent bottle 104 .
- the determination unit 118f determines that the liquid level detection function is abnormal. , the presence or absence of an abnormality in the capacitance sensor 206 can also be determined.
- Example 2 An automatic analyzer of Example 2 will be described with reference to FIG. FIG. 6 shows the foam detection workflow when using the probe in the automatic analyzer of the second embodiment.
- the automatic analyzer of this embodiment has a form in which the disposable tip 111 is not attached to the tip of the probe 201 of the dispensing unit 106 of the automatic analyzer 101 described in the first embodiment, and the probe 201 is in direct contact with the reagent 205. .
- S201 to S206 shown in FIG. 6 are the same as S101 to S106 in FIG. 5 described in the first embodiment.
- a bubble determination parameter is checked (S207), and unlike FIG. 5, attachment of the disposable chip 111 and determination of attachment/non-attachment are omitted, and the foam detection operation is started (S208). .
- This S208 is the same as S107, and S209 to S213 are the same as S110 to S114.
- the automatic analyzer 101 of the first embodiment is substantially the same. effect is obtained.
- the probe 201 is returned to the highest point without proceeding to S214.
- a second bubble detection operation is performed on the detected reagent bottle 104 . If bubbles are not detected in the second detection operation, the determination unit 118f determines that the bubbles have been eliminated by the first bubble detection, and does not mask the reagent in the corresponding reagent bottle 104. can.
- the foam determination accuracy can be improved. For example, since large bubbles are less likely to be formed in the reagent bottle 104 with a reagent item containing a small amount of surfactant, D b is changed from 3 [mm] to 2 [mm] for finer bubbles. can also detect bubbles. In this case, before starting the foam determination operation, the foam determination parameter is checked for each reagent, and the determination threshold corresponding to the reagent item is read out to perform the foam determination operation.
- Example 3 An automatic analyzer of Example 3 will be described with reference to FIGS. 7 and 8.
- FIG. Figures 7 and 8 show the foam detection workflow when using the installed reagent.
- the probe 201 descends to a position higher than the assumed liquid level by a predetermined amount, and if the liquid level is not detected during the downward movement, it is determined that no bubbles are mixed. there were. As a precondition for this determination, it is assumed that the filling amount information of the reagent bottle 104 is stored in the storage unit 118 d or the IC tag 119 attached to the reagent bottle 104 .
- reagents for equipment installation evaluation may be used across different automatic analyzers as an index for determining whether the condition at the time of equipment installation is normal or abnormal. This reagent is referred to as the installed reagent.
- the installed reagent is used in another device in advance, the actual reagent remaining amount is less than the reagent filling amount information in the IC tag 119, so there is a possibility that the IC tag 119 information will diverge. There is In determining such an installed reagent, instead of stopping at a position higher than the liquid level as shown in FIG. is good.
- the information area of the IC tag 119 of the reagent bottle 104 is defined to be a reagent for defined general measurement items or an installed reagent, and the control unit 118b determines whether the type of the reagent 205 is an installed reagent. Based on this, switching is made between a mode in which the probe 201 is brought into direct contact with the reagent 205 (see FIG. 3) and a mode in which the probe 201 is stopped at the first position PT (see FIG. 4).
- FIG. 7 A reagent registration procedure using an abnormality detection method that switches the foam detection operation method for each item in the automatic analyzer of this embodiment will be described with reference to FIGS. 7 and 8.
- FIG. 7 A reagent registration procedure using an abnormality detection method that switches the foam detection operation method for each item in the automatic analyzer of this embodiment will be described with reference to FIGS. 7 and 8.
- FIG. 7 A reagent registration procedure using an abnormality detection method that switches the foam detection operation method for each item in the automatic analyzer of this embodiment will be described with reference to FIGS. 7 and 8.
- S301 to S305 shown in FIG. 7 are the same as S101 to S105 shown in FIG.
- the determination unit 118f determines whether or not the target reagent container 102 is an installed reagent based on the read unique information (S306). If it is determined that the reagent is not the installed reagent, the process proceeds to S307. S307 to S320 are the same as S106 to S119.
- the disposable chip 111 is attached (S322), the presence or absence of the disposable chip 111 is determined (S323), and the probe 201 is lowered until it reaches the liquid surface (S324).
- the process proceeds to S330. On the other hand, if detected, then the difference between the liquid level detection position (P d ) and the initial liquid level position (P 0 ) is a predetermined threshold value (preferably an assumed value based on the number of times of use so far). (S326), and if it is determined that the difference is less than the predetermined threshold value, the process proceeds to S327 to proceed to the next step. It is determined whether registration of the reagent bottle 104 is necessary (S327). When it is determined that the registration of the next reagent bottle 104 is necessary, the process proceeds to S328, moves to the suction position of the second reagent bottle 104 (S328), and similarly determines (S323, etc.). .
- a predetermined threshold value preferably an assumed value based on the number of times of use so far.
- the determination unit 118f When the liquid level is not detected in S325 described above, or when it is determined that the difference is equal to or greater than the predetermined threshold in S326, the determination unit 118f does not register the installation reagent and masks it (S330), and controls the The unit 118b moves the probe 201 to the tip disposal position 114 and discards the used disposable tip 111 (S331). Further, an alarm is displayed on the display unit 118c (S332), and the registration process is completed.
- control unit 118b switches between a mode in which the probe 201 is brought into direct contact with the reagent 205 and a mode in which the probe 201 is stopped at the first position PT , thereby reducing consumption of consumables.
- control unit 118b switches between a mode in which the probe 201 is brought into direct contact with the reagent 205 and a mode in which the probe 201 is stopped at the first position PT depending on the type of the reagent 205, thereby reducing consumption of consumables.
- foam determination can also be performed for reagents that have discrepancies between the initial filling amount information and the remaining amount of actual liquid, such as reagents for device inspection.
- the form of switching between the mode of detecting the presence or absence of abnormality by direct contact with the liquid and the mode of detecting abnormality without contacting the liquid as in the present embodiment can be performed without using the disposable chip 111 as in the second embodiment. It can also be applied to a form in which the probe 201 is in direct contact with the liquid.
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Abstract
Description
自動分析装置の実施例1について図1乃至図5を用いて説明する。
液面検知の際、プローブ201は上下動作範囲の最上点(Pmax)からその直下にある試薬205液面に向かってZ方向に下降し、液面を検知すると下降動作を停止する。ここで、最上点(Pmax)から液面検知位置(Pd)までを距離Ddとする。
上述の実液面検知位置を利用した異常検知方式では液面検出のためにプローブ201を液面に接触させる必要がある。そのため、液面検知後にプローブ201に付着した試薬205が他の試薬ボトル104内に混入してキャリーオーバしないように先端を毎回洗浄する必要がある。
実施例2の自動分析装置について図6を用いて説明する。図6は本実施例2の自動分析装置におけるプローブを使用した場合の泡検知ワークフローを示している。
実施例3の自動分析装置について図7乃至図8を用いて説明する。図7および図8は据付試薬を使用した場合の泡検知のワークフローを示している。
なお、本発明は、上記の実施例に限定されるものではなく、様々な変形例が含まれる。上記の実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。
102…試薬容器
103…試薬ディスク
104…試薬ボトル
105…RFIDリーダ/ライタ
106…分注ユニット
107…吸引位置
108…洗浄槽
109…反応容器
110…インキュベータ
111…ディスポーザブルチップ(消耗品チップ)
112…チップセンサ
113…チップ供給位置
114…チップ廃棄位置
115…マガジン
116…搬送装置
117…インターフェース
118…制御装置
118a…操作部
118b…制御部
118c…表示部
118d…記憶部
118e…演算部
118f…判定部
119…ICタグ
201…プローブ
202…アーム
203…アーム軸
204…ベース
205…試薬
206…静電容量センサ(検知部)
Claims (9)
- 容器に収容される液体を分注するプローブと、
前記液体の液面を検知する検知部と、
前記プローブを前記液体の方向に下降させ、前記液面の高さと想定される液面値から第1所定値だけ高い第1位置にて前記プローブの下降を停止させて、前記第1位置において前記検知部により前記液面が検知されないときは前記液体に異常なしと判定し、前記第1位置に至るまでに前記検知部により前記液面が検知されたときは前記液体に異常有りと判定する判定部と、を備える
ことを特徴とする自動分析装置。 - 請求項1に記載の自動分析装置において、
前記プローブの動作を制御する制御部を更に備え、
前記制御部は、前記プローブを前記液体に直接接液させるモードと、前記プローブを前記第1位置にて停止させるモードとを切り替える
ことを特徴とする自動分析装置。 - 請求項2に記載の自動分析装置において、
前記制御部は、前記液体の種類によって前記プローブを前記液体に直接接液させるモードと、前記プローブを前記第1位置にて停止させるモードとを切り替える
ことを特徴とする自動分析装置。 - 請求項1に記載の自動分析装置において、
前記判定部は、
前記第1位置より第2所定値だけ高い第2位置と前記第1位置との間で前記液面が検知されたときは前記液体に泡が生じていると判定し、
前記第2位置より第3所定値だけ高い第3位置と前記第2位置との間で前記液面が検知されたときは前記容器に前記液体のフィルムが生じていると判定する
ことを特徴とする自動分析装置。 - 請求項4に記載の自動分析装置において、
前記判定部は、
前記第3位置より第3所定値だけ高い第4位置と前記第3位置との間で前記液面が検知されたときは液面検知機能異常と判定する
ことを特徴とする自動分析装置。 - 請求項1に記載の自動分析装置において、
前記プローブの先端に消耗品チップが装着される
ことを特徴とする自動分析装置。 - 請求項1に記載の自動分析装置において、
前記プローブの先端に消耗品チップが装着されずに、前記プローブが前記液体に直接接する
ことを特徴とする自動分析装置。 - 請求項3に記載の自動分析装置において、
前記制御部は、前記液体の種類が据付試薬か否かに基づいて前記モードの切り替えを行う
ことを特徴とする自動分析装置。 - 請求項1に記載の自動分析装置において、
前記第1位置の情報を記憶する記憶部を更に備えた
ことを特徴とする自動分析装置。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004028673A (ja) * | 2002-06-24 | 2004-01-29 | Olympus Corp | 自動分析装置 |
JP2007139767A (ja) * | 2005-11-15 | 2007-06-07 | F Hoffmann La Roche Ag | 電気的滴下監視 |
JP2019100909A (ja) * | 2017-12-05 | 2019-06-24 | 株式会社島津製作所 | 分注装置 |
WO2020066189A1 (ja) * | 2018-09-26 | 2020-04-02 | 株式会社日立ハイテクノロジーズ | 自動分析システム |
JP2020112380A (ja) | 2019-01-09 | 2020-07-27 | 日本電子株式会社 | 自動分析装置及びプログラム |
CN112881739A (zh) * | 2019-11-29 | 2021-06-01 | 深圳市帝迈生物技术有限公司 | 加样方法及其装置、计算机存储介质、样本分析方法及其装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2004028673A (ja) * | 2002-06-24 | 2004-01-29 | Olympus Corp | 自動分析装置 |
JP2007139767A (ja) * | 2005-11-15 | 2007-06-07 | F Hoffmann La Roche Ag | 電気的滴下監視 |
JP2019100909A (ja) * | 2017-12-05 | 2019-06-24 | 株式会社島津製作所 | 分注装置 |
WO2020066189A1 (ja) * | 2018-09-26 | 2020-04-02 | 株式会社日立ハイテクノロジーズ | 自動分析システム |
JP2020112380A (ja) | 2019-01-09 | 2020-07-27 | 日本電子株式会社 | 自動分析装置及びプログラム |
CN112881739A (zh) * | 2019-11-29 | 2021-06-01 | 深圳市帝迈生物技术有限公司 | 加样方法及其装置、计算机存储介质、样本分析方法及其装置 |
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