US20040105783A1 - Automatic analyzer - Google Patents

Automatic analyzer Download PDF

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Publication number
US20040105783A1
US20040105783A1 US10/614,105 US61410503A US2004105783A1 US 20040105783 A1 US20040105783 A1 US 20040105783A1 US 61410503 A US61410503 A US 61410503A US 2004105783 A1 US2004105783 A1 US 2004105783A1
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United States
Prior art keywords
reagent
reaction
disk
plural
disks
Prior art date
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Abandoned
Application number
US10/614,105
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English (en)
Inventor
Isao Yamazaki
Ryuji Tao
Katsuaki Takahashi
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Hitachi High Tech Corp
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Hitachi High Technologies Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi High Technologies Corp filed Critical Hitachi High Technologies Corp
Assigned to HITACHI HIGH-TECHNOLOGIES CORPORATION reassignment HITACHI HIGH-TECHNOLOGIES CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAKAHASHI, KATSUAKI, TAO, RYUJI, YAMAZAKI, ISAO
Publication of US20040105783A1 publication Critical patent/US20040105783A1/en
Priority to US13/529,395 priority Critical patent/US8496877B2/en
Priority to US13/927,209 priority patent/US8632725B2/en
Abandoned legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • 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
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/0092—Scheduling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/0092—Scheduling
    • G01N2035/0094—Scheduling optimisation; experiment design
    • 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
    • G01N35/1065—Multiple transfer devices
    • G01N2035/1076—Multiple transfer devices plurality or independently movable heads
    • 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
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/025—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having a carousel or turntable for reaction cells or cuvettes
    • 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
    • G01N35/1081—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices characterised by the means for relatively moving the transfer device and the containers in an horizontal plane
    • G01N35/1083—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices characterised by the means for relatively moving the transfer device and the containers in an horizontal plane with one horizontal degree of freedom
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/11—Automated chemical analysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/11—Automated chemical analysis
    • Y10T436/113332—Automated chemical analysis with conveyance of sample along a test line in a container or rack
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/11—Automated chemical analysis
    • Y10T436/115831—Condition or time responsive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/11—Automated chemical analysis
    • Y10T436/115831—Condition or time responsive
    • Y10T436/116664—Condition or time responsive with automated titrator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/11—Automated chemical analysis
    • Y10T436/119163—Automated chemical analysis with aspirator of claimed structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/12—Condition responsive control

Definitions

  • This invention relates to an automatic analyzer for automatically analyzing components in blood or the like, and especially to an automatic analyzer permitting a greater number of reagents thereon and having a high analytical capacity per unit time.
  • JP-A-5-10957 discloses an automatic analyzer provided with two reagent disks, which allow to mount reagents in concentric circles, and reagent probes independently movable corresponding to respective concentric trains of individual reagent containers. Namely, the reagent disks are arranged in concentric circles to increase a number of reagents to be mounted on the reagent disk. The reagent dispensing probes can move independently with each other corresponding to the respective trains of the reagent to avoid a reduction in processing speed.
  • reagents from reagent containers on the same reagent disk can be dispensed only into reaction cells placed at the same dispensing position on the reaction disk.
  • reagents from reagent containers on one reagent disk can be dispensed one position on the reaction disk, and reagents from reagent cells on the other reagent disk can be dispensed the other position different from one position on the reaction disk.
  • the reagent probe can suck reagents only in combinations specified by the arrangement of the reagent containers, so that analysis with a random combination of reagents cannot be performed with high handling capacity.
  • An object of the present invention is, therefore, to provide an automatic analyzer, which permits arrangement of reagents with a high degree of freedom on reagent disks, allows to mount a great number of reagents, and has a high analytical capacity per unit time.
  • the object of the present invention can be achieved by the following automatic analyzer:
  • An automatic analyzer having a reagent disk for arranging on a circumference thereof plural reagent containers, a reaction disk for arranging on a circumference thereof plural reaction cells, and a section for reacting the reagent in the reagent and sample in the reaction cell and for analyzing the reaction.
  • the automatic analyzer includes plural reagent disks and a reagent dispensing probe for sucking the reagent from the reagent container and injecting the same into the reaction cell.
  • the reagent dispensing probe sucks reagents from each of reagent containers on plural reagent disks, injecting the reagent into a reaction cell on same dispensing position on the reaction disk.
  • This automatic analyzer can be rephrased as described below.
  • An automatic analyzer having a reagent disk for arranging on a circumference thereof plural reagent containers, a reaction disk for arranging on a circumference thereof plural reaction cells, and a section for reacting the reagent in the reagent and sample in the reaction cell and for analyzing the reaction.
  • the automatic analyzer includes plural reagent disks and a reagent dispensing probe capable of dispensing a reagent to a reaction cell on the same position on the reaction disk with no movement of the reaction disk from various position of the reagent containers arranged on circumferences of the reagent disks.
  • reagent containers arranged on circumferences of the reagent disks is a rephrase of the possibility that reagents can be dispensed to the same dispensing position on the reaction disk, and does not mean that the reaction is fixed to prevent its movement.
  • the expressions “reagent disks” and “reaction disk” do not absolutely require that they are disk-shaped, so that the expression “on a circumference of a disk” is used. In the case of a disk-shaped disk, this expression may therefore be rephrased as “on a circular circumference”.
  • the reagent containers may be arranged on the circular circumference of a circular disk and rotating the disk.
  • the reagent containers may be arranged on a closed-loop belt conveyor, being moved by driving the belt conveyor. In the latter instance, the movement track of the reagent containers is not required to be circular, thereby allowing to set a movement track of a desired shape.
  • an automatic analyzer can include a plurality of independently-operable reagent dispensing each of which corresponds to each of reagent containers.
  • the reagent dispensing probes can dispense a reagent to a reaction cell on the same position on the reaction disk with no movement of the reaction disk from various position of the reagent containers arranged on circumferences of the reagent disks.
  • the expression “a reagent to a reaction cell . . . containers arranged on circumferences of the reagent disks” is synonymous with the existence of plural reagent dispensing positions. In other words, this expression means that the automatic analyzer includes provided with reagent dispensing probes arranged corresponding to plural reagent dispensing positions, respectively.
  • the reagent dispensing probes includes a moving mechanism capable of reciprocating the reagent dispensing probe along a rail extending over the plural reagent disks.
  • the rail may be linear or curved in configuration insofar as it permits sucking of a reagent from one of the reagent containers on the plural reagent disks. Further, no limitation is imposed on the moving mechanism for each reagent dispensing probe insofar as it can move the reagent dispensing probe along the rail.
  • the reagent dispensing probe is equipped with a motor and is arranged pendant from the rail disposed above the reagent disks such that the reagent dispensing probe is movable along the rail, or such a construction that the reagent dispensing probe is equipped with a motor and runs on the rail disposed below the reagent disks.
  • plural reagent dispensing probes may be arranged such that they can reciprocate along a rail and further, a plurality of such rails may be arranged.
  • the number of reagent dispensing probes arranged on one rail may desirably be the same as the number of reagent disks, because an excessively large number of reagent dispensing probes leads to mutual interference in operation between the reagent dispensing probes. An analysis can be performed faster with the number of rails.
  • At least one of the plural reagent disks may preferably be arranged inside the reaction disk with their central axes extending along the same line.
  • the space efficiency can be improved, for example, by constructing a reaction disk in the form of a ring and arranging a disk-shaped reagent disk inside the ring. Needless to say, plural reagent disks can be arranged concentrically. Arrangement of a reaction disk and a reagent disk with their central axes extending along the same line permits a simpler mechanical structure, although they can of course be arranged with their central axes being shifted from each other as needed.
  • At least one of the reagent dispensing probes may be provided with a moving mechanism capable of moving the at least one reagent dispensing probe in a direction substantially vertical to the rail.
  • This construction requires a more complex mechanism for the reagent dispensing probe, but the positional range of accessible reagent containers becomes wider, leading to an improvement in the freedom of analysis. Whether or not this mechanism is arranged should be chosen depending on its need.
  • the reagent containers may each be constructed such that it can store in a single package both of a first reagent and a second reagent to be used for the same analysis item and can be replaced package by package.
  • FIG. 1 is a perspective view of an automatic analyzer according to a first embodiment of the present invention
  • FIG. 2 is a top plan view of the automatic analyzer of the first embodiment
  • FIG. 3 is a fragmentary schematic illustration of the automatic analyzer of the first embodiment
  • FIG. 4 is a construction diagram of a reagent disk in an automatic analyzer according to a second embodiment of the present invention.
  • FIG. 5 is a construction diagram of a reagent disk in an automatic analyzer according to a third embodiment of the present invention.
  • FIG. 6 is a top plan view of an automatic analyzer according to a fourth embodiment of the present invention.
  • FIG. 7 is a top plan view of an automatic analyzer according to a fifth embodiment of the present invention.
  • FIG. 1 is a perspective view of the first embodiment of the present invention
  • FIG. 2 being a top view of the first embodiment.
  • Fifty-four reaction cells 35 are arranged along a circular circumference of a reaction disk 36 disposed on a housing 62 .
  • a reagent disk 42 is arranged inside the reaction disk 36
  • a reagent disk 41 is arranged outside the reaction disk 36 .
  • the reagent disks 41 , 42 can each mount a plurality of reagent containers 40 along a circular circumference. Two reagents are received in one reagent container 40 .
  • a transport mechanism 12 is arranged to move a rack 11 with sample containers 10 mounted thereon.
  • Rails 25 , 26 are arranged over the reagent disks 41 , 42 .
  • Reagent dispensing probes 20 , 21 are arranged on the rail 25 moving in parallel and vertical directions relative to the rail 25 .
  • Reagent dispensing probes 22 , 23 are arranged on the rail 26 moving in three axis directions of the rail 26 .
  • the reagent dispensing probes 20 , 21 , 22 , 23 are connected to a reagent pump 24 respectively.
  • Sampling probes 15 , 16 are arranged between the reaction cells 35 and the transport mechanism 12 being rotatable and movable up and down.
  • the sampling probes 15 , 16 are each connected to a sampling pump 14 .
  • the washing unit 45 is connected to a washing pump 46 .
  • a washing port 54 is arranged within an operational range of the sampling probes 15 , 16 , reagent dispensing probes 20 , 21 , 22 , 23 and mixing units 30 , 31 .
  • the sampling pump 14 , reagent pump 24 , washing pump 46 , detection unit 51 , reaction cells 35 , reagent disk 41 , reagent dispensing probes 20 , 21 , 22 , 23 and sampling probes 15 , 16 are each connected to a controller 60 .
  • a sample dispensing position, a first-timing reagent dispensing position, a second-timing reagent dispensing position, a third-timing reagent dispensing position, a mixing position, a measuring position and a washing position are set on the reaction disk 36 .
  • the reaction disk rotates counterclockwise over 11 pitches and stops. For example, a reaction cell which is located at Position 1 in a certain cycle advances to Position 2 in the following cycle.
  • Samples to be tested are received in the sample containers 10 , the sample container being mounted on the rack 11 , the rack 11 being conveyed by the transport mechanism 12 .
  • the sampling probe 15 firstly sucks the sample in an amount required for a first test from the sample container 10 located at a specific position.
  • a predetermined amount of the sample is injected from the sampling probe 15 into the reaction cell 35 located on the reaction disk 1 .
  • the reagent dispensing probe 20 sucks a first reagent, which corresponds to the first test in a predetermined amount, from a reagent containers 40 on the reagent disk 41 .
  • the reaction cell advances to Position 2 on the reaction disk.
  • the reagent dispensing probe 20 injects the predetermined amount of the first reagent into the reaction cell.
  • the sampling probe 15 is washed.
  • reaction cell advances to Position 3 on the reaction disk, and at this position, the reagent and the sample are mixed with each other by the mixing unit 30 . In the meantime, the reagent dispensing probe 20 is washed.
  • the reaction cell in the course of its advance to Position 4 on the reaction disk, passes between the light source 50 and the detection unit 51 to perform an optical measurement.
  • the mixing unit 30 is washed in the washing port 54 .
  • optical measurements are also performed likewise.
  • the reagent dispensing probe 22 When the first test is designed to dispense the second reagent at a second timing, the reagent dispensing probe 22 , in a 16th cycle, sucks the second reagent from the reagent container 40 on the reagent disk 41 , and in a 17th cycle, the probe 22 injects the second reagent into the reaction cell located at Position 17 on the reaction disk. In an 18th cycle, the mixing unit 31 mixes the liquid in the reaction cell located at Position 18 on the reaction disk. In the meantime, the reagent dispensing probe 22 is washed.
  • the reagent dispensing probe 22 When the first test is designed to dispense the second reagent at a third timing, the reagent dispensing probe 22 , in a 26th cycle, sucks the second reagent from the reagent container 40 on the reagent disk 41 , and in a 27th cycle, the probe 22 injects the second reagent into the reaction cell located at Position 27 on the reaction disk. In a 28th cycle, the mixing unit 31 the liquid in the reaction cell located at Position 28 on the reaction disk. In the meantime, the reagent dispensing probe 22 is washed.
  • the washing unit 45 After repeating an optical measurement subsequent to the dispensing and mixing of the second reagent, the washing unit 45 , at Position 44 or 49 on the reaction disk, sucks the liquid from the reaction cell and injects a washing solution into the reaction cell in a 44th cycle and a 49th cycle, respectively. Further, in a 54th cycle, the washing solution is completely sucked.
  • the results of the plural optical measurements performed by the detection unit 51 are fed to the controller 60 , and the controller 60 calculates the concentration of the measurement items of the first test.
  • the sampling probe 16 firstly in a 1st cycle, sucks the sample in an amount required for the second test from the sample container 10 located at the specific position.
  • a predetermined amount of the sample is injected from the sampling probe 16 into the reaction cell 35 located at Position 1 on the reaction disk.
  • the reagent dispensing probe 21 sucks a first reagent, which corresponds to the second test, in a predetermined amount from the corresponding one of the reagent containers 40 on the reagent disk 42 .
  • the reaction cell advances to Position 2 on the reaction disk.
  • the reagent dispensing probe 21 inject the predetermined amount of the first reagent into the reaction cell.
  • the sampling probe 16 is washed.
  • the reaction cell advances to Position 3 on the reaction disk, and at this position, the reagent and the sample are mixed with each other by the mixing unit 30 . In the meantime, the reagent dispensing probe 21 is washed.
  • the reaction cell in the course of its advance to Position 4 on the reaction disk, passes between the light source 50 and the detection unit 51 to perform an optical measurement.
  • the mixing unit 30 is washed in the washing port 54 .
  • the reagent dispensing probe 23 When the second test is designed to dispense the second reagent at the second timing, the reagent dispensing probe 23 , in a 17th cycle, sucks the second reagent from the reagent container 40 on the reagent disk 42 , and in an 18th cycle, the probe 23 injects the second reagent into the reaction cell located at Position 18 on the reaction disk. In a 19th cycle, the mixing unit 31 mixes the liquid in the reaction cell located at Position 18 on the reaction disk. In the meantime, the reagent dispensing probe 23 is washed.
  • the reagent dispensing probe 23 When the second test is designed to dispense the second reagent at the third timing, the reagent dispensing probe 23 , in a 27th cycle, sucks the second reagent from the corresponding reagent container 40 on the reagent disk 42 , and in a 28th cycle, the probe 23 injects the second reagent into the reaction cell located at Position 27 on the reaction disk. In a 29th cycle, the mixing unit 31 mixes the liquid in the reaction cell located at Position 28 on the reaction disk. In the meantime, the reagent dispensing probe 23 is washed.
  • the washing unit 45 After repeating the optical measurement subsequent to the dispensing and mixing of the second reagent, the washing unit 45 , at Position 44 or 49 on the reaction disk, sucks the liquid from the reaction cell and injects a washing solution into the reaction cell in a 45th cycle and a 50th cycle, respectively. Further, in a 55th cycle, the washing solution is completely sucked.
  • the reagent dispensing probe 20 approaches or accesses to the reagent disk 41 in an odd-numbered cycle to suck a reagent, while the reagent dispensing probe 22 approaches to the same reagent disk in an even-numbered cycle to suck a reagent. Accordingly, the two probes do not simultaneously approach to the reagent disk in the same cycle.
  • the reagent dispensing probe 23 approaches to the reagent disk 42 in an odd-numbered cycle to suck a reagent
  • the reagent dispensing probe 21 approaches to the same reagent disk in an even-numbered cycle to suck a reagent. Accordingly, the two probes do not simultaneously approach to the reagent disk in the same cycle. It is, therefore, possible to shorten the time of each cycle and hence, to increase the number of samples to be analyzed per unit time.
  • the two reagent disks can rotate independently with each other, and in a single cycle, reagents are sucked with only one reagent dispensing probe from the respective reagent disks. It is, therefore, possible to freely choose a combination of regents to be sucked at the same time and hence, to perform an analysis with such a high analytical capacity as permitting the analysis even in the case of an irregular combination of analysis items.
  • a first reagent and a second reagent are both sucked from the reagent disk 41 in an odd-numbered test, and a first reagent and a second reagent are both sucked from the reagent disk 42 in an even-numbered test. Accordingly, the first reagent and the second reagent, which are to be used for the same test item, can be mounted on the reagent disk. It is, therefore, only necessary to perform reagent replacements to the same reagent disk. This can reduce the labor for the reagent replacement, and can also decrease potential errors.
  • two reagents can be received in the same reagent container 40 . Therefore, the first reagent and second reagent, both of which correspond to a single test item, can be received in the same one of the reagent containers 40 , and the first reagent and second reagent can be replaced at once. This can reduce the labor for the reagent replacement, and can also decrease potential errors.
  • the reagent dispensing probe 20 approaches to the first-timing reagent dispensing position on the reaction disk 36 in an even-numbered cycle to inject the first reagent, while the reagent dispensing probe 21 approaches to the same reagent dispensing position in an odd-numbered cycle to inject the first reagent. Accordingly, the two probes do not simultaneously approach to the first-timing reagent dispensing position in the same cycle.
  • the reagent dispensing probe 22 makes an access to the second-timing reagent dispensing position and the third-timing reagent dispensing position on the reaction disk 36 in odd-numbered cycles to inject the second reagent, while the reagent dispensing probe 23 approaches to the same reagent dispensing positions in even-numbered cycles to inject the second reagent. Accordingly, the two probes do not simultaneously approach to the same reagent dispensing position in the same cycle. Further, the first-timing reagent dispensing position, the second-timing reagent dispensing position and the third-timing reagent dispensing position are apart from one another, so that the probes can simultaneously approach to the individual positions. It is, therefore, necessary to allocate only one reagent-injecting time per cycle and hence, to shorten each cycle time and to increase the number of samples analyzable per unit time.
  • the reagent dispensing probe 20 and reagent dispensing probe 23 suck reagents in an odd-numbered cycle and inject them in an even-numbered cycle
  • the reagent dispensing probe 21 and reagent dispensing probe 22 suck reagents in an even-numbered cycle and inject them in an odd-numbered cycle.
  • each probe it is hence required perform a reagent sucking, a reagent injection and probe washing in the time of two cycles.
  • the operation time can be set sufficiently long to ensure stable performance of the operation.
  • each reagent dispensing probe can be set long, a broad movable range can be set for the probe.
  • the reagent disks can be dimensioned large, and reagents required for various types of tests can all be mounted on the reagent disks.
  • the reagent dispensing probe 20 and the reagent dispensing probe 21 are common in the injecting position.
  • the first reagent can be dispensed at an equivalent timing no matter through which one of the probes the first reagent is injected. It is, therefore, possible to analyze the course of a reaction under equal conditions.
  • the reagent dispensing probe 22 and the reagent dispensing probe 23 can move in a direction perpendicular to the rail 26 , and can approach to the common second-timing reagent dispensing position and third-timing reagent dispensing position to inject the second reagents, respectively. It is, therefore, possible to analyze plural reactions different from one another in the mixing timing of the second reagent and hence to increase the kinds of analyzable items.
  • the reagent dispensing probe 22 and the reagent dispensing probe 23 are common to each other in the injecting position, thereby permitting analyses under equivalent conditions.
  • the reagent dispensing probe 20 and the reagent dispensing probe 21 are on the common rail 25
  • the reagent dispensing probe 22 and the reagent dispensing probe 23 are on the common rail 26 .
  • a smaller area is, therefore, needed for the installation of the probes so that the analyzer can be constructed compact.
  • the reagent disk 41 and the reagent disk 42 are located on the outer and inner sides of the reaction disk 36 , respectively, with the reagent dispensing positions on the reaction disk being located between the reagent disk 41 and the reagent disk 42 . Accordingly, the two reagent disks can be arranged at a small interval therebetween, and as the rails 25 , 26 to be arranged over the two reagent disks and the reagent injecting positions, short rails can be used.
  • the analyzer can therefore be constructed compact.
  • the distances to the common reagent injection positions are short and therefore, the moving distances of the reagent dispensing probes are short. It is, therefore, possible to shorten the cycle time and hence, to increase the number of samples analyzable per unit time.
  • the sampling probe 15 and the sampling probe 16 alternately repeat a sample sucking operation and a sample injection operation so that in a single cycle, only one sampling probe approaches to the sample container 10 and the reaction cell 35 . It is, therefore, possible to shorten the cycle time and hence, to increase the number of samples analyzable per unit time.
  • sampling probe 15 and the sampling probe 16 it is only necessary for the sampling probe 15 and the sampling probe 16 to perform the sucking operation and injection operation of a sample and its washing in two cycles.
  • the dispensing and probe movements can, therefore, be performed with a margin time, the accuracy of each dispensed amount can be heightened, and the accuracy of the analysis can be increased.
  • the first reagent is dispensed by the reagent dispensing probe 20 from the reagent disk 41 and the second reagent is dispensed by the reagent dispensing probe 22 from the reagent disk 41 .
  • the first reagent is dispensed by the reagent dispensing probe 21 from the reagent disk 42 and the second reagent is dispensed by the reagent dispensing probe 23 from the reagent disk 42 .
  • the sampling probe 15 , the reagent disk 41 , the reagent dispensing probe 20 and the reagent dispensing probe 22 are combined into a first set, while the sampling probe 16 , the reagent disk 42 , the reagent dispensing probe 21 and the reagent dispensing probe 23 are combined into a second set, and none of them are combined with a set other of the first and second sets.
  • first timing of reagent dispensing and the second or third timing of reagent dispensing were shifted from each other by an even number of cycles, it would be necessary to suck the first reagent and the second reagent in the same cycle.
  • the first timing of reagent dispensing and the second or third timing of reagent dispensing are shifted from each other by an odd number of cycles, so that the a cycle in which the first reagent is sucked and a cycle in which the second reagent is aspirated are alternately repeated.
  • reaction cells 35 there are fifty-four reaction cells 35 , which rotate over 11 pitches in a cycle. Each reaction cell, therefore, rotates 360 degrees plus 1 pitch in 5 cycles. Accordingly, it will be 5 cycles later that the reaction cell located at a given position on the reaction disk moves to the adjacent position which is apart from the given position by 1 pitch. If the reaction disk were constructed such that each reaction cell would rotate 360 degrees plus 1 pitch in an even number of cycles, it would be the even number of cycles later that the reaction cell would move to the adjacent position which is apart by 1 pitch. In this case, positions to which each reaction cell would successively move at a time interval equivalent to the even number of cycles would be located side by side.
  • the reaction disk is constructed such that each reaction cell rotates 360 degrees plus 1 pitch in an odd number of cycles. It is, therefore, possible to arrange the positions—at which the first reagent and the second positions are injected, respectively—close to each other, and hence, to construct the analyzer in a small size. Construction of the reaction disk such that each reaction cell rotates 360 degrees minus 1 pitch in an odd number of cycles can also bring about the same advantageous effect.
  • the reaction disk is constructed such that the position of each reaction cell is shifted by 1 pitch in an odd number of cycles. Accordingly, a train of reaction cells, which cannot be measured as they pass at an accelerated or decelerated speed through the measurement position by the detection unit 51 , occurs at successive timings. Since these successive timings can be brought into agreement with the reaction-cell-washing timings which are irrelevant to the measurement of the courses of reactions, these courses of reactions can be continuously analyzed without any timing at which no measurement is feasible. It is, therefore, possible to perform analyses of a wide variety of items ranging from items each of which requires only a short time for its reaction to items each of which requires a long time for its reaction.
  • the reaction disk 36 rotates clockwise over 43 pitches per cycle in an analyzer of a similar construction as that illustrated in FIGS. 1, 2 and 3 .
  • a reaction cell located at Position 1 on the reaction disk also moves to Position 2 on the reaction disk in the next cycle.
  • the reaction cell can be measured repeatedly. It is, therefore, possible to perform an analysis at high accuracy.
  • FIG. 4 shows a reagent disk of the second embodiment of the present invention.
  • reagent containers 40 are arranged at double circles on the reagent disk 41 .
  • Reagent containers are similarly arranged on the reagent disk 42 .
  • this embodiment makes it possible to arrange many reagents on small reagent disks, the number of analyzable items can be increased without making the size of the analyzer larger.
  • FIG. 5 shows a reagent disk of the third embodiment according to the present invention.
  • reagent containers 40 have a sectorial shape, and one reagent is received in one container.
  • Reagent containers of this shape are mounted on both of the reagent disk 41 and reagent disk 42 .
  • the arrangement of the reagent containers on and along the circular circumference of the reagent disk makes it possible to reduce the spaces between the adjacent reagent containers.
  • the individual reagent containers can, therefore, be increased in capacity so that more samples can be analyzed without replacing the reagent containers. Further, number of items to be analyzed can be increased without enlarging the size of an automatic analyzer.
  • FIG. 6 shows a top view of the fourth embodiment according to the present invention.
  • the automatic analyzer shown in FIG. 6 is different from an automatic analyzer shown in FIG. 2 in that the sampling probe 15 and the sampling probe 16 inject samples into reaction cells located at adjacent positions with each other, that the reagent dispensing probe 20 and the reagent dispensing probe 21 inject reagents into reaction cells located at adjacent positions with each other, that the reagent dispensing probe 22 and the reagent dispensing probe 23 inject reagents into reaction cells located at adjacent positions with each other, and the mixing unit 30 and the mixing unit 31 include two mixing bars respectively to agitate the liquids in adjacent two reaction cells at the same time.
  • the automatic analyzer of this embodiment operates as will be described next.
  • the sampling probe 15 and the sampling probe 16 suck samples from sample containers 10 at the same time, and inject them into reaction cells located at adjacent positions with each other on the reaction disk 36 .
  • the reagent dispensing probe 20 and the reagent dispensing probe 21 inject the corresponding first reagents into the respective reaction cells.
  • the mixing unit 30 mixes the liquids in the individual reaction cells at the same time. After their optical measurements are then repeated a few times, the reagent dispensing probe 22 and the reagent dispensing probe 23 inject the second regents into the respective reaction cells.
  • the injections of samples and reagents which relate to tests to be conducted in two reaction cells are performed at the same time with the reaction cells arranged adjacent with each other. It is, therefore, possible to increase the number of samples analyzable per unit time.
  • the injections of the samples by the two sampling probes, the injections of the first reagents by the corresponding reagent dispensing probes arranged in combination, and the injections of the second reagents by the corresponding reagent dispensing probes arranged in combination are each performed to the adjacent reaction cells located very close to each other. It is, therefore, possible to construct the analyzer compact.
  • the first reagent and the second reagent for the sample dispensed by the sampling probe 15 can be arranged together on the reagent disk 41 , while the first reagent and the second reagent for the sample dispensed by the sampling probe 16 can be arranged together on the reagent disk 42 .
  • This can simplify the replacement of reagent containers, and can avoid potential errors in replacing reagent containers.
  • FIG. 7 shows a top view of the fifth embodiment according to the present invention.
  • the automatic analyzer shown in FIG. 7 is different from the automatic analyzer shown in FIG. 2 in that the former automatic analyzer is provided with only one sampling probe, only one reagent dispensing probe on the rail 25 and only one reagent dispensing probe on the rail 26 .
  • the automatic analyzer of this embodiment operates as will be described next.
  • the sample in a sample container 10 is dispensed by the sampling probe 15 into a reaction cell 35 on the reaction disk 36 .
  • the reagent dispensing probe 20 sucks a reagent from the reagent disk 41 and injects it into a reaction cell
  • the reagent dispensing probe 22 sucks a reagent from the reagent disk 42 and injects it into a reaction cell.
  • the reagent dispensing probe 20 sucks a reagent from the reagent disk 42 and injects it into a reaction cell
  • the reagent dispensing probe 22 sucks a reagent from the reagent disk 41 and injects it into a reaction cell.
  • the first-timing reagent dispensing position and the second-timing reagent dispensing position are apart from each other by an odd number of cycles, a reagent to be dispensed at the first timing in a test and another reagent to be dispensed at the second or third timing in the same test are always supplied from the reagent disk on the same side.
  • the reagent dispensing probe 20 and the reagent dispensing probe 22 each aspirates reagents from both of the reagent disk 41 and the reagent disk 42 .
  • This embodiment therefore, requires the smaller number of reagent dispensing probes, thereby allowing to provide the analyzer at lower price.
  • an analysis making use of reagents arranged on the reagent disk 41 and an analysis making use of reagents arranged on the reagent disk 42 are each performed by the common reagent dispensing probes and the common sampling probe. It is, therefore, possible to obtain analysis results of high reproducibility irrespective of the characteristics of the individual probes.
  • the aspirations of reagents from the respective reagent disks in each cycle are performed by the corresponding reagent dispensing probes, respectively. It is, therefore, possible to set the time of each cycle longer and also to increase the number of samples analyzable per unit time.
  • plural reagent disks for example, two reagent disks with a first group of reagents and a second group of reagents mounted thereon, respectively, are disposed, and during a single cycle, one of the first group of reagents and one of the second group of reagents are aspirated from the corresponding reagent disks by only a single reagent dispensing probe. It is, therefore, possible to provide an automatic analyzer, which can mount many reagents and has a high analytical capacity per unit time.

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US8920722B2 (en) * 2006-06-30 2014-12-30 Sysmex Corporation Sample analyzer and sample analyzing method
US20080011106A1 (en) * 2006-06-30 2008-01-17 Nobuhiro Kitagawa Sample analyzer and sample analyzing method
US20100111766A1 (en) * 2008-10-31 2010-05-06 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. Automatic analysis apparatus and operation method thereof
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US8845964B2 (en) * 2011-09-27 2014-09-30 Sysmex Corporation Sample analyzer and method for controling a sample analyzer
US20130079921A1 (en) * 2011-09-27 2013-03-28 Sysmex Corporation Sample analyzer and method for controling a sample analyzer
EP2770329A4 (de) * 2011-10-18 2015-09-16 Hitachi High Tech Corp Automatisiertes analysegerät
US9442128B2 (en) 2011-10-18 2016-09-13 Hitachi High-Technologies Corporation Automated analyzer
US10184948B2 (en) 2011-10-18 2019-01-22 Hitachi High-Technologies Corporation Automated analyzer
CN103969459A (zh) * 2014-04-22 2014-08-06 深圳市库贝尔生物科技有限公司 一种全自动生化分析方法
CN107727647A (zh) * 2017-09-30 2018-02-23 深圳迈瑞生物医疗电子股份有限公司 生物样本分析仪的启动方法以及生物样本分析仪
JP2018146595A (ja) * 2018-06-27 2018-09-20 シスメックス株式会社 検体分析装置
WO2021134609A1 (zh) * 2019-12-31 2021-07-08 深圳迈瑞生物医疗电子股份有限公司 一种样本分析装置
WO2021147187A1 (zh) * 2020-01-21 2021-07-29 深圳迎凯生物科技有限公司 样本分析方法和样本分析装置

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US8496877B2 (en) 2013-07-30
JP3914837B2 (ja) 2007-05-16
DE60309104T2 (de) 2007-06-06
JP2004045112A (ja) 2004-02-12
EP1380841B1 (de) 2006-10-18
US8632725B2 (en) 2014-01-21
US20120258012A1 (en) 2012-10-11
EP1380841A2 (de) 2004-01-14
EP1380841A3 (de) 2004-06-02
US20130287629A1 (en) 2013-10-31

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