JP4576393B2 - Automatic analyzer - Google Patents

Description

  The present invention relates to an automatic analyzer that automatically analyzes components of a biological sample such as blood and urine, and in particular, collects a sample from a sample container accommodated in a sample rack and inspects the sample, and if necessary, samples The present invention relates to an automatic analyzer that re-inspects

  Automatic analyzers are used in large hospitals and clinical laboratories because they can analyze large amounts of biological samples in a short time. To further increase the throughput per unit time of this automatic analyzer and handle more types of analysis items, the sample rack containing the sample containers is transported on the transport line, and multiple analysis modules are installed on the transport line. Connected modular analyzers have been proposed. The automatic analyzer may require the same sample to be measured again because the sample concentration exceeds the measurement range, but the modular analyzer has a sample rack so that such re-examination can be performed automatically. There has also been proposed a mechanism provided with a mechanism for transferring to the entrance of the conveyance line by a return line. As an example of such an automatic analyzer, one disclosed in JP-A-10-213586 is known.

  In the automatic analyzer described in Japanese Patent Application Laid-Open No. 10-213586, a sample rack containing a control sample, a standard sample, a cleaning solution and the like that do not require retesting is registered in the control unit in advance as a rack that does not require retesting. When racks that do not require retesting have been transported to the first sorting unit provided at the end of the transport line, these racks that do not require retesting are sorted to the rack collection unit, and sample racks that contain other general samples are All are distributed to a rack standby section formed of a U-shaped line. Furthermore, in the second distribution unit provided downstream of the first distribution unit, among the sample racks waiting in the rack standby unit, the sample racks determined to be retested are distributed to the return line, General specimens judged not to be inspected are distributed to the rack collection unit.

  In this case, all the general sample racks that have already been determined that the retest is unnecessary on the upstream side of the first distribution unit are all allocated to the rack standby unit.

  In the automatic analyzer in which only the biochemical automatic analyzer is connected to the transport line, the probability of re-examination is very low, and there is a low possibility that a problem will occur even in such a system. However, with an automated analyzer that connects the automated immune analyzer and biochemical analyzer to the same transport line, it prevents a decrease in test result reliability due to contamination (carry over) between different types of samples via the sample dispensing device. Therefore, immunity items may be analyzed prior to biochemical items. In this case, if all the general sample racks are made to wait in the standby unit, there is a possibility that the execution of the analysis of biochemical items is delayed and the final test result report is delayed. In addition, even for an automated analyzer in which only the biochemical automatic analyzer or only the immune analyzer is connected to the same transport line, the sample rack that is determined not to require re-examination before the first distribution unit Since the waiting time for the sample rack in the standby unit can be shortened by the distribution to the rack collection unit, the total analysis time may be shortened.

  An object of the present invention is to provide an automatic analyzer that can shorten the analysis processing time as compared with the conventional one.

  The configuration of the present invention for achieving the above object is as follows.

  The analyzer that inspects the sample collected from the sample container accommodated in the sample rack, and the sample rack that contains the sample is transported to the analyzer, and the sample rack from which the sample is collected is transported to the outlet. A rack, a rack supply unit that supplies a sample rack to the transport line, a standby unit that waits for a sample rack that may be retested, a rack collection unit that stores a sample rack that has been tested, and a retest In an automatic analyzer equipped with a return line for returning a necessary sample rack to the analysis unit, a sample that needs to wait for re-examination necessity among sample racks transported by the transport line The first distribution unit that distributes the racks to the second distribution unit to be described later, and the first distribution unit. Out of the sample racks that do not need to wait for retesting, the sample racks that need to be retested are allocated to the feedback line, the sample racks that have been tested are allocated to the rack collection unit, and A second distribution unit that distributes sample racks that need to be retested among the sample racks waiting in the standby unit to the return line, and distributes sample racks that do not need retesting to the rack collection unit Automatic analyzer.

  Moreover, the following structures may be sufficient.

  The analyzer that inspects the sample collected from the sample container accommodated in the sample rack, and the sample rack that contains the sample is transported to the analyzer, and the sample rack from which the sample is collected is transported to the outlet. A rack, a rack supply unit that supplies a sample rack to the transport line, a standby unit that waits for a sample rack that may be retested, a rack collection unit that stores a sample rack that has been tested, and a retest In an automatic analyzer equipped with a return line for returning a necessary sample rack to the analysis unit, a sample that needs to wait for a re-examination necessity determination among sample racks transported by the transport line Of the sample racks that do not need to wait for the determination of the necessity of retesting, the racks that do not need to be retested are sorted to the collection unit and need to be retested. A first distribution unit that distributes a certain sample rack to a second distribution unit to be described later, and a sample rack that is distributed by the first distribution unit and that needs to be retested is distributed to the return line, and the standby unit A second distribution unit that distributes sample racks that need to be retested to the return line and distributes sample racks that do not need to be retested to the rack collection unit. Automatic analyzer.

  Further, the following configuration may be used.

The analyzer that inspects the sample collected from the sample container accommodated in the sample rack, and the sample rack that contains the sample is transported to the analyzer, and the sample rack from which the sample is collected is transported to the outlet. A rack, a rack supply unit that supplies a sample rack to the transport line, a standby unit that waits for a sample rack that may be retested, a rack collection unit that stores a sample rack that has been tested, and a retest In an automatic analyzer equipped with a return line for returning a necessary sample rack to the analyzer,
Of the sample racks transported on the transport line, the sample racks that need to wait for the necessity of retesting are allocated to the standby unit, the sample racks that need retesting are allocated to the return line, and retesting is performed. Of the sample racks waiting in the standby unit, the first distribution unit that distributes the unnecessary sample racks to the rack collection unit, and the sample racks that need to be re-examined are allocated to the return line for re-inspection. And a second distribution unit that distributes sample racks that do not require to the rack collection unit.

  The above configuration is particularly suitable for an automatic analyzer in which an immune automatic analysis unit that analyzes immune analysis items and a biochemical automatic analysis unit that analyzes biochemical analysis items are connected to the same transport line. In that case, the specimen for which the measurement of the immunological analysis item (specimen = the item for examining whether the biological sample contains a specific antigen or antibody) is completed is placed on the return line without going through the standby section. As a result, the analysis of biochemical analysis items can be performed quickly, so that the total analysis processing time can be shortened.

  The automatic analyzer includes a registration unit for registering necessity / unnecessity of reexamination for each sample rack, and a control unit for controlling a distribution operation in the distribution unit based on a registration result of the registration unit. Is preferred.

  The standby unit has a receiving area for receiving the sample rack from the standby unit inlet and a delivery area for sending the received sample rack to the standby unit outlet after the standby time, and a U-shaped transfer path is formed by both areas. Also good.

  According to the first aspect of the present invention, sample racks waiting for reexamination necessity determination, reexamination required samples, and reexamination unnecessary samples can be efficiently transported by two rack distribution mechanisms.

  According to the invention described in claim 2 of the present invention, sample racks waiting for retest necessity determination, samples requiring retesting, samples not requiring retesting can be efficiently transported by two rack distribution mechanisms, and upstream By transporting directly from the rack distribution mechanism to the rack storage line, the sample rack can be stored more efficiently.

  According to the invention described in claim 3 of the present invention, sample racks waiting for reexamination necessity determination, reexamination required samples, and reexamination unnecessary samples can be efficiently transported by two rack distribution mechanisms. By carrying directly from the rack distribution mechanism to the return line, reinspection processing can be performed more efficiently.

  According to the invention described in claim 4 of the present invention, when measurement is performed in the upstream biochemical analysis section after measurement in the downstream immunological analysis section is completed, automatic processing is efficiently performed automatically. An analyzer can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an example of an automatic analyzer according to the present invention, and is a schematic diagram showing the overall configuration. This is a hybrid type automatic analyzer constituted by a biochemical automatic analyzer 6 and an immune automatic analyzer 14. After the sample racks 2 arranged in the rack supply unit 1 are transferred to the transport line 3, the identification unit 4 identifies an identification medium such as a barcode label attached to the sample container accommodated in the sample rack 2. By reading with the device 5, the sample rack number and the sample container number are recognized. The sample rack number and the sample container number recognized by the identification device 5 are transmitted to the control unit 33, and the type of the sample rack 2, the type of analysis item designated for each sample container, etc. correspond to the sample reception number. Thus, it is collated with the analysis information instructed in advance from the operation unit 35, the destination of the sample rack 2 is determined by the control unit 33 based on the collation result, stored in the storage unit 34, and the subsequent processing of the sample rack 2 Used for

  An emergency sample rack input unit 46 is provided upstream of the rack supply unit 1. When the sample rack 2 is placed in the emergency sample rack input unit 46 with the sample rack 2 in the rack supply unit 1. The sample rack 2 in the emergency sample rack loading unit 46 is transferred to the transport line 3 in preference to the sample rack 2 in the rack supply unit 1.

  The automatic immune analyzer 14 arranged along the transport line 3 receives the sample rack 2 from the transport line 3 and arranges the sample rack 2 after the sampling process on the circumference, and returns the sample rack 2 to the transport line 3 again. A reaction disk 18 that advances the reaction of the sample and the reagent according to various analysis items in the arranged reaction container, a reaction container supply mechanism 32 that supplies independent reaction containers one by one to the reaction disk, and various analysis items A reagent disk 19 that operates to position a reagent corresponding to the reagent inhalation position, a reaction solution suction mechanism 27 for introducing a reaction solution of each sample formed in the reaction vessel into the measurement unit, and a potential on the working electrode And a sample part in the sample container from the sampling area 16 to the reaction container on the reaction disk 18. The sample dispensing mechanism 17 for dispensing, comprising a reagent dispensing mechanism 20 from the reagent bottle dispenses a reagent corresponding to an analysis item to the reaction vessel on the reaction disk 18 min the reagent disk 19.

  The biochemical automatic analyzer 6 receives the sample rack 2 from the transport line 3 and performs various operations in the sampling area 8 where the sample rack 2 after the sampling process is returned to the transport line 3 and in each reaction vessel arranged on the circumference. The reaction disk 10 that advances the reaction between the sample and the reagent according to the analysis item, the reagent disk 11 that operates to position the reagent according to the various analysis items at the reagent suction position, and each sample formed in the reaction container A multi-wavelength spectrophotometer for measuring the absorbance of the reaction solution, a specimen dispensing mechanism 9 for dispensing the sample in the sample container from the sampling area 8 to the reaction container on the reaction disk 10, and a reagent disk 11 A reagent dispensing mechanism 12 for dispensing a reagent corresponding to an analysis item from a reagent bottle to a reaction container on the reaction disk 10 is provided.

  The sample rack 2 holding the sample in which the items to be analyzed and inspected by the automatic immune analyzer 14 or the biochemical automatic analyzer 6 are received from the transport line 3 by the rack take-in mechanism 7 or 15 from the sampling area 8 or 16 is transferred. The transferred specimen rack 2 is moved to the sample collection position in the sampling area 8 or 16, and the dispensing nozzle of the specimen dispensing mechanism 9 or 17 is inserted into the required sample container to dispense into the reaction container. Is made.

  The sample rack 2 for which the collection of the samples related to all the analysis items instructed has been completed is moved to the corresponding position of the rack discharge mechanism 13 or 21 and transferred onto the transport line 3 by the rack discharge mechanism 13 or 21. . On the other hand, the sample collected in the reaction container on the reaction disk 10 or 18 is reacted with the reagent dispensed by the reagent dispensing mechanism 12 or 20, and the data corresponding to each analysis item measured after a predetermined time is controlled. Is output to the unit 33. The control unit 33 collates the determination criteria set in advance with the analysis test data. If the measurement data is inappropriate, the control unit 33 associates the sample rack number and the sample container number with the sample rack number. It memorize | stores in the memory | storage part 34 and controls operation | movement of the rack distribution mechanism 22 mentioned later at an appropriate timing. Further, if the sample does not require retesting, it is transported to the rack storage unit 23 and stored. After the measurement is completed, the measurement result is displayed on the display unit 36 and stored in the storage unit 34.

  FIG. 1 and FIG. 2 show conventional transport paths for racks determined to require re-inspection processing.

  The rack distribution mechanism 22 includes a rack push-out mechanism 40 that reciprocates in the direction of pushing the sample rack 2 into the rack standby unit 24, and a rack feed mechanism that moves a claw for pushing the rear end of the sample rack 2 by a rotating belt or the like. 41 and a retractable rack stopper 45 that drives a member that stops the movement of the sample rack 2 by contacting the tip of the sample rack 2 that has reached the rack distribution mechanism 22 by a solenoid or the like. The rack take-in mechanism 28 includes a rack feed mechanism having a claw for pushing the rear end of the sample rack 2 that does not require retesting on the carry-out line 26 and placing each sample rack 2 on the belt of the storage line 47. Yes. At the entrance of the return line 30, a rack feed mechanism 43 that pushes the end of the sample rack 2 that has been transferred from the carry-out line 26 and needs to be re-inspected and moves a claw for transferring to the return line 30 by a rotating belt or the like. Is provided. In addition, sensors for confirming the position of the rack are provided at various places.

  Whether the sample rack 2 transported on the transport line 26 has already been stored in the rack storage unit 23 or loaded into the rack standby unit 24 when it reaches the rack distribution mechanism 22 as described with reference to FIG. The determination is made by the control unit 33.

  When stored in the rack storage unit 23, the retractable rack stopper 45 does not operate, and the rack sensor 74 confirms that there is no rack at the entrance of the rack standby unit 24, and then the rack standby mechanism 24 uses the rack feed mechanism 41. After the rack sensor 75 confirms that there is no rack at the outlet of the rack standby section 24, the rack take-in mechanism 28 passes through the rack standby section outlet, and the rack sensor 77 receives the rack in the storage line 47. After confirming that there is no, it is carried to the storage line 47. The sample rack 2 transferred to the storage line 47 is carried to the entrance of the rack storage unit 23 and stored in the rack storage unit 23 by the rack pushing mechanism 29.

  On the other hand, when being loaded into the rack standby unit 24, the storage rack stopper 45 is operated, the sample rack 2 is stopped at the entrance of the rack standby unit 24, and is loaded into the rack standby unit 24 by the rack push-out mechanism 40. A rack sensor 70 is provided at the entrance of the rack standby unit 24 to confirm that the sample rack 2 is securely stored. The sample rack 2 is sequentially carried into the sample rack standby unit 24 in the above procedure, and the sample rack 2 is not carried to the rack distribution mechanism 22 until the rack sensor 71 detects the sample rack 2 or for a certain period of time. A plurality of stored sample racks 2 are carried together by a rack feed mechanism 42 and sent to a rack delivery position 48. The sample rack 2 sent to the rack delivery position 48 is transferred to the rack carry-out arm 44 of the carry-out line 26 by the rack transfer mechanism 25 after confirming that there is no sample rack 2 in the carry-out arm 44 by the rack sensor 72. 2 is gripped by the carry-out arm 44. At this time, if it is determined whether or not the reexamination of the sample rack 2 already held by the carry-out arm 44 is necessary, the sample rack 2 is immediately carried to the rack take-in mechanism 28 or the return line 30 and to the return line 30. When it is carried, it is taken into the transport line by the rack return mechanism 31 and sent to the analysis unit. If the necessity for re-inspection has not been determined, the process waits as it is.

  FIG. 3 is a diagram for explaining a mechanism for efficiently transporting a sample rack that needs re-examination to a return line by providing two rack distribution mechanisms in the automatic analyzer of FIG.

  Of the sample racks that have been measured by the analysis unit, the sample rack 2 that is waiting for the re-examination determination from the control unit 33 operates the storage rack stopper 45 in the first rack distribution mechanism 37, The rack is pushed out to the rack standby unit 24 by the rack pushing mechanism 40. Of the sample racks that have been waiting for reexamination necessity determination at the rack standby unit 24, the sample rack 2 that has been determined to be reexamined by the control unit 33 is the unloading line 26 on the transport path described with reference to FIG. To the return line inlet 73 from the carry-out line exit 49, and is pushed horizontally to the return line 30 by the rack feed mechanism 43 and carried on the return line 30. The belt is transferred to the outlet of the return line and sent to the analysis unit.

  Similarly, the sample rack 2 that was determined to be unnecessary for re-examination by the control unit 33 among those in the rack standby unit 24 was similarly transported from the carry-out line 26 to the carry-out line outlet 49 by the rack carry-out arm 44. After that, it is pushed horizontally to the storage line 47 by the rack take-in mechanism 28, pushed out by the rack push-in mechanism 29, and stored in the rack storage unit 23.

On the other hand, the sample rack for which re-examination is determined is transported from the first rack sorting mechanism 37 to the rack second rack sorting mechanism 38 horizontally by the rack feeding mechanism 41 as it is, and further to the rack feeding mechanism 39. Then, the end of the sample rack 2 is pushed and pushed horizontally to the exit position 49 of the carry-out line 26. In the meantime, the carry-out arm 44 has moved to the exit position 49 of the carry-out line, and is transported by the carry-out arm 44 from the exit position 49 of the carry-out line to the inlet 73 of the return line, and by the rack feed mechanism 43. Is pushed to the conveyor belt on the return line 30 and is transferred to the exit of the feedback line by the conveyor belt on the feedback line 30 and conveyed to the analysis unit.

  Of the sample racks sent from the first rack distribution mechanism 37 to the second rack distribution mechanism 38, the sample rack 2 determined to be unnecessary to be reexamined is pushed horizontally to the storage line 47 by the rack feed mechanism 39. Then, it is pushed out to the rack storage unit 23 by the rack pushing mechanism 29 and stored.

  The rack sensors 74 to 77 detect the arrival of the rack at the delivery position of each sample rack and the presence or absence of the sample rack.

  FIG. 4 is also a diagram illustrating a mechanism that has two rack distribution mechanisms as in the automatic analyzer of FIG. 3 and that can store the sample rack in the rack storage unit more efficiently than FIG.

  The sample rack transport method for waiting for the reexamination necessity determination and for the sample rack that requires reexamination is the same, but the sample rack 2 determined not to require the reexamination is received by the rack feed mechanism 41 by the rack standby unit 24 and the second rack. The first rack allocating unit is fed horizontally to the storage line 47 without passing through the allocating unit, and is stored in the storage unit 23 by the rack pushing mechanism 29.

  FIG. 5 is a diagram for explaining a mechanism in which there are two rack distributing mechanisms as in FIGS. 3 and 4, and both of these rack distributing mechanisms can directly transport the sample rack to the return line.

  When the sample rack reaches the first rack sorting mechanism 37, it is determined that the reexamination is necessary. The sample rack is directly transferred to the return line 30 by the rack feeding mechanism 39 of the first rack sorting mechanism 37, and the second rack sorting mechanism 37 is reached. The sample rack need not be transported to the minute mechanism 38, and the sample rack can be transported to the return line more quickly. The other method of transporting the sample rack waiting for retest necessity determination is the same as that of FIGS. 2, 3 and 4, and the method of transporting the sample rack determined to be unnecessary for retest is the same as FIG.

  In the automatic analyzers shown in FIGS. 1 and 3 to 5, the biochemical analysis is performed after the end of the immunological analysis, and the transport path of the sample rack determined to require the reexamination process is the same. When the sample rack 2 is loaded into the rack supply unit 1, information indicating that immunological analysis and biochemical analysis are necessary is already recorded in the identification medium. Based on this information, the control unit 33 allows the sample rack whose immunological analysis has been completed to be recorded. Is sent to the Biochemical Analysis Department. The sample rack 2 that has been measured by the automatic immune analyzer 14 and then determined to be measured by the biochemical automatic analyzer 6 is transported to the first rack sorting mechanism 37 through the transport line 3. The Thereafter, as shown in the embodiment in FIGS. 3 to 5, when the first rack distribution mechanism 37 is reached, the re-examination process is already determined and the same path as the transport path of the sample rack 2 is followed to the return line. Then, it is conveyed to the biochemical automatic analyzer through the above-described route.

It is the schematic which shows the whole structure of the automatic analyzer which is one Example of this invention. It is a figure for demonstrating the sample rack conveyance path | route at the time of the retest process of the conventional automatic analyzer. The sample rack transport path in the automatic analyzer having two rack distribution mechanisms according to claim 1 and the sample when the measurement in the biochemical analyzer is performed after the measurement in the immune automatic analyzer in claim 4 It is a figure for demonstrating the conveyance path | route of a rack. In the automatic analyzer having two rack distribution mechanisms according to claim 2, the sample rack transport path from the upstream rack distribution mechanism directly to the rack storage line, and after the measurement by the automatic immune analyzer according to claim 4 It is a figure for demonstrating the conveyance path | route of the sample rack at the time of measuring with a biochemical analyzer. In the automatic analyzer having two rack distribution mechanisms according to claim 3, the sample rack transport path directly from the upstream rack distribution mechanism to the rack return line and after the measurement by the immune automatic analysis section according to claim 4, are generated. It is a figure for demonstrating the conveyance path | route of the sample rack at the time of measuring in a chemical automatic analysis part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rack supply part, 2 ... Sample rack, 3 ... Conveyance line, 4 ... Identification part, 5 ... Identification device, 6 ... Biochemical automatic analysis part, 7, 15, 28 ... Rack take-in mechanism, 8, 16 ... Sampling Area, 9, 17 ... Sample dispensing mechanism, 10, 18 ... Reaction disc, 11, 19 ... Reagent disc,
DESCRIPTION OF SYMBOLS 12,20 ... Reagent dispensing mechanism, 13,21 ... Rack discharge | emission mechanism, 14 ... Automatic immunity analysis part, 22 ... Rack distribution mechanism, 23 ... Rack storage part, 24 ... Rack standby part, 25 ... Rack transfer mechanism,
26 ... Unloading line, 27 ... Reaction solution suction mechanism, 29 ... Rack pushing mechanism, 30 ... Return line, 31 ... Rack return mechanism, 32 ... Reaction container supply mechanism, 33 ... Control part, 34 ... Storage part, 35 ... Operation part , 36 ... display section, 37 ... first rack distribution mechanism, 38 ... second rack distribution mechanism, 39, 41 to 43 ... rack feed mechanism, 40 ... rack push-out mechanism, 44 ... rack carry-out arm, 45 ... storage type Rack stopper, 46 ... emergency sample rack input section, 47 ... storage line, 48 ... rack delivery position, 49 ... outlet line outlet, 70-72, 74,75 ... rack sensor, 73 ... return line inlet.

Claims (4)

An analysis unit for inspecting a sample;
A transport line for transporting the sample to the analysis unit;
A sample waiting section for waiting for a sample that may be retested;
A sample collection unit for storing a sample that has been tested;
A return line for returning a sample that needs to be retested to the analyzer;
In an automatic analyzer equipped with
Of the samples transported on the transport line, the samples that need to wait for the reexamination necessity determination are distributed to the sample waiting section, and the samples that do not need to wait for the reexamination necessity determination are assigned to the sample recovery section A first specimen sorting section that sorts into
A second sample distribution unit that distributes a sample that needs to be reexamined to the feedback line and distributes a sample that does not need to be reexamined to the sample recovery unit among the samples distributed to the sample standby unit;
With
And a sample feeding mechanism for directly transporting a sample determined to be retested when it reaches the first sample distribution unit from the first sample distribution unit to the return line. Automatic analyzer characterized by An analysis unit for inspecting a sample;
A transport line for transporting the sample to the analysis unit;
A sample waiting unit for waiting for a sample that may be retested,
A sample collection unit for storing a sample that has been tested;
A return line for returning a sample that needs to be retested to the analysis unit;
In an automatic analyzer equipped with
The analysis unit includes an immune automatic analysis unit capable of analyzing an immunological analysis item, and a biochemical automatic analysis unit capable of analyzing a biochemical analysis item. The biochemical automatic analysis unit and the immune automatic analysis unit are provided on the transport line. Are arranged in the order of
Of the samples transported on the transport line, the samples that need to wait for the reexamination necessity determination are distributed to the sample standby section, and the samples that do not need to wait for the reexamination necessity determination are assigned to the sample recovery section A first specimen sorting section that sorts into
A second sample distribution unit that distributes a sample that needs to be retested to the feedback line and distributes a sample that does not need to be retested to the sample recovery unit among the samples distributed to the sample waiting unit;
With
Further, the first sample distribution unit transfers a sample determined to be retested when it reaches the first sample distribution unit from the first sample distribution unit to the feedback line. A sample feeding mechanism for directly transporting the sample, the sample transported in the transport line after the analysis in the automatic immune analyzer is completed, is distributed to the return line by the first sample distribution unit, the feedback line An automatic analyzer comprising a control mechanism for controlling to be conveyed to the biochemical automatic analyzer via The automatic analyzer according to claim 1 or 2,
A registration unit for registering necessity / unnecessity of reexamination for each sample is provided, and the distribution operation in the first sample distribution unit and the second sample distribution unit is controlled based on the registration result of the registration unit. automatic analyzer characterized by comprising a control unit. The automatic analyzer according to claim 1 or 2 ,
The sample standby unit has a receiving area for receiving a sample from the standby unit inlet and a delivery area for sending the received sample to the standby unit outlet after the standby time, and a U-shaped transfer path is formed by both areas. An automatic analyzer.

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