JP2008232835A - Analyzer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an analyzer capable of preventing back flow of the waste liquid from a drain pipe. <P>SOLUTION: The analyzer 1 is equipped with a plurality of measuring mechanisms 3a-3c for performing measuring processing with respect to the reaction liquid of a specimen and a reagent in a reaction container 30 and also equipped with the waste liquid pumps 40a-40c provided to the respective measuring mechanisms 3a-3c and sucking the liquid in the reaction container 30 sucked by the suction nozzles connected to the measuring mechanisms 3a-3c, to send out the same to the drain pipe 31 and a control part 41 for operating all of the waste liquid pumps 40a-40c in a case that at least either one of a plurality of the measuring mechanisms 3a-3c is operated. When at least either one of a plurality of the measuring mechanisms 3a-3c is operated, the back flow of the waste liquid from the drain pipe 31 is surely prevented by always operating all of the waste liquid pumps 40a-40c. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an analyzer that includes a measurement mechanism that performs measurement processing by dispensing a sample in a sample container into a reaction container, and analyzes the sample based on the measurement result of the measurement mechanism.

  The analyzer can perform analysis processing on a large number of specimens such as blood and body fluids at the same time, and can analyze multiple components quickly and with high accuracy, so it can be used in various fields such as immunological tests, biochemical tests, blood transfusion tests, etc. It is used for inspection. Conventionally, in order to increase the analysis processing capability for a specimen, an analyzer in which a plurality of measurement mechanisms are arranged in series has been proposed.

  In such an analyzer, some measurement mechanisms are stopped when the number of samples to be processed is smaller than the number of samples that can be processed when the entire analyzer is operated. In addition, in a conventional analyzer, even if some measurement mechanisms have failed and the failed measurement mechanism is stopped, the processing operation of another measurement mechanism in which no failure has occurred is continued. The sample measurement has been continued (for example, see Patent Document 1).

JP 2004-28933 A

  By the way, in the analyzer, waste liquids such as the reaction liquid in the reaction container for which the measurement has been completed and the cleaning liquid used for cleaning the reaction container are respectively sent to a predetermined drain pipe and discarded. This drain pipe is generally combined into one in the apparatus in order to consolidate the drain outlets. In an analyzer having a plurality of measuring mechanisms, this one drain pipe is provided for each measuring mechanism. In addition, a waste liquid pump for discharging the waste liquid generated in each measuring mechanism is provided. The waste liquid pump is provided with a valve for sending the waste liquid in a certain waste liquid delivery direction with respect to the drain pipe.

  In the conventional measuring apparatus, when some measuring mechanisms are stopped among the plurality of measuring apparatuses, the operation of the waste liquid pump in the stopped measuring mechanism is also stopped. In this case, when the operation of the waste liquid pump is stopped, due to the operation of the waste liquid pump of another measurement mechanism, a pressure is applied to the stopped waste liquid pump in the direction opposite to the waste liquid delivery direction. Here, when pressure in the waste liquid delivery direction is applied to the waste liquid pump that is stopped when the sealing function of the valve in the waste liquid pump is deteriorated, liquid and gas from the drain pipe enter the waste liquid pump through the valve gap. May flow in. As a result, in the conventional analyzer, the waste liquid discharged by the waste liquid pump of the other measurement mechanism flows back into the stopped measurement mechanism through the stopped waste liquid pump, and the back-flowed waste liquid is There was a problem of overflowing inside.

  The present invention has been made in view of the above-described drawbacks of the prior art, and an object of the present invention is to provide an analyzer that prevents the backflow of waste liquid from the drain pipe.

  In order to solve the above-described problems and achieve the object, an analyzer according to the present invention is an analyzer including a plurality of measurement mechanisms that perform measurement processing on a reaction solution of a sample and a reagent in a reaction container When each of the measurement mechanisms is in operation, at least one of the pumps for sucking the liquid in the reaction vessel sucked by the connected suction nozzle and sending it to the drainage pipe, and the plurality of measurement mechanisms, And a control means for operating all of the pumps.

  In the analyzer according to the present invention, the pump has a suction valve that allows the liquid to flow in by an elastic deformation at a suction port for sucking the liquid, and the pump by the elastic deformation at a delivery port that sends out the liquid. It has a delivery valve that allows liquid to flow out.

  In the analyzer according to the present invention, the drain pipe is a first drain pipe and a second drain pipe, and the pump is a first pump provided corresponding to the first drain pipe. And a second pump provided corresponding to the second drain pipe for each measurement mechanism, and the control means, when at least one of the measurement mechanisms is operating, All of the first pump and all of the second pump are operated.

  Moreover, the analyzer according to the present invention is characterized in that the liquid sent out by the pump to the drain pipe is a cleaning liquid or the reaction liquid for cleaning the inside of the reaction vessel.

  According to the present invention, when at least one of the plurality of measurement mechanisms is operating, it is possible to prevent the backflow of the waste liquid from the drain pipe by always operating all of the pumps.

  Hereinafter, with reference to the drawings, an analysis apparatus according to an embodiment of the present invention will be described using an analysis apparatus that performs analysis on a specimen such as blood, urine, or liquid. Note that the present invention is not limited to the embodiments. In the description of the drawings, the same parts are denoted by the same reference numerals.

  FIG. 1 is a schematic diagram showing the configuration of the analyzer according to the present embodiment. As shown in FIG. 1, the analyzer 1 according to the embodiment dispenses and reacts a sample transport mechanism 2 that sequentially transports a sample container containing a sample to be analyzed, and a sample and a reagent into a reaction container 30. A plurality of measurement mechanisms 3a to 3c for optically measuring reactions occurring in the container 30, and the entire analyzer 1 including the sample transfer mechanism 2 and the measurement mechanism 3 are controlled, and the measurement results in the measurement mechanisms 3a to 3c are analyzed. And a control mechanism 4 for performing The analyzer 1 automatically performs analysis of a plurality of samples through the cooperation of these mechanisms.

  The sample transfer mechanism 2 includes a plurality of sample racks 21b that hold a plurality of sample containers 21a containing blood samples and sequentially transfer them in the direction of the arrows in the figure. In the sample transfer mechanism 2, the samples in the sample container 21a transferred to each sample dispensing position on the sample transfer mechanism 2 are arranged on the reaction table 33 by the sample dispensing unit 32 in each measurement mechanism 3a to 3c. And dispensed into the reaction vessel 30 to be conveyed.

  And the analyzer 1 has arrange | positioned several measurement mechanism 3a-3c in series, in order to improve the analysis processing capability with respect to the sample. Each measurement mechanism 3a-3c has the same structure, respectively, for example. Each of these measurement mechanisms 3a to 3c is roughly classified into a sample dispensing unit 32, a reaction table 33, a first reagent storage 34, a first reagent dispensing unit 35, a second reagent storage 36, a second reagent dispensing unit 37, A stirrer (not shown), a photometric unit 38, and cleaning units 39a to 39c are provided.

  Each specimen dispensing unit 32 includes an arm that freely moves up and down in the vertical direction and rotates around a vertical line passing through its base end as a central axis. A sample nozzle for aspirating and discharging the sample is attached to the tip of the arm. The sample dispensing unit 32 includes an intake / exhaust mechanism using an unillustrated intake / exhaust syringe or piezoelectric element. The sample dispensing unit 32 sucks the sample from the sample container 21a transferred to the sample dispensing position on the sample transfer mechanism 2 by the sample nozzle, rotates the arm counterclockwise in the drawing, and performs each reaction. The sample is discharged into the container 30 and dispensed.

  Each reaction table 33 transfers the reaction container 30 to a predetermined position in order to dispense a specimen or reagent into the reaction container 30, to stir, wash, or measure the light of the reaction container 30. The reaction table 33 is rotatable about a vertical line passing through the center of the reaction table 33 as a rotation axis when driven by a drive mechanism (not shown) under the control of the control unit 41. An openable / closable lid and a thermostat (not shown) are provided above and below the reaction table 33, respectively.

  The first reagent storage 34 can store a plurality of first reagent containers 34 a in which the first reagent dispensed in the reaction container 30 is stored. In the first reagent storage 34, a plurality of storage chambers are arranged at equal intervals, and a first reagent container 34a is detachably stored in each storage chamber. The first reagent storage 34 rotates clockwise or counterclockwise about a vertical line passing through the center of the first reagent storage 34 as a driving mechanism (not shown) is driven under the control of the control unit 41. The desired first reagent container 34a is transferred to the reagent aspirating position by the first reagent dispensing unit 35. An openable / closable lid (not shown) is provided above the first reagent storage 34. A constant temperature bath is provided below the first reagent storage 34.

  Similar to the sample dispensing unit 32, the first reagent dispensing unit 35 includes an arm having a reagent nozzle for aspirating and discharging the reagent attached to the tip. The arm freely moves up and down in the vertical direction and rotates around a vertical line passing through its base end as a central axis. The first reagent dispensing unit 35 sucks the reagent in the first reagent container 34a moved to the reagent suction position on the first reagent storage 34 by the reagent nozzle, rotates the arm clockwise in the figure, and sets the reaction table. It dispenses into the reaction vessel 30 conveyed to a predetermined position on 33.

  Similarly to the first reagent storage 34, the second reagent storage 36 can store a plurality of second reagent containers 36a in which the second reagent to be dispensed in the reaction container 30 is stored, and the control of the control unit 41 is also possible. When a drive mechanism (not shown) is driven, it can be rotated clockwise or counterclockwise about a vertical line passing through the center of the second reagent storage 36 as a rotation axis, and the desired second reagent container 36a can be moved in the second direction. The reagent is transferred to the reagent suction position by the reagent dispensing unit 37.

  Similar to the first reagent dispensing unit 35, the second reagent dispensing unit 37 includes an arm having a reagent nozzle for aspirating and discharging the reagent attached to the tip, and a reagent aspirating position on the second reagent storage 36. The reagent in the second reagent container 36a moved to is sucked by the reagent nozzle, the arm is turned counterclockwise in the drawing, and dispensed to the reaction container 30 conveyed to a predetermined position on the reaction table 33.

  The photometry unit 38 measures the optical characteristics of the reaction solution in the reaction container 30 that has been transported to a predetermined photometry position. The measurement result obtained by the photometry unit 38 is output to the control unit 41 and analyzed by the analysis unit 43.

  Moreover, each measuring mechanism 3a-3c is equipped with the washing | cleaning parts 39a-39c, respectively. Each of the cleaning units 39a to 39c sucks and discharges the reaction liquid of the sample and the reagent in the reaction container 30 that has been measured by the photometry unit 38 by the suction nozzles 391a, 391b, 391c and the suction nozzles 392a, 392b, 392c In addition, cleaning is performed by injecting a cleaning liquid such as detergent, cleaning water, or pure water into the reaction container 30 and sucking the cleaning liquid from the reaction container 30. The analyzer 1 is provided in each of the measurement mechanisms 3a to 3c, and sucks the liquid in the reaction container 30 sucked by the suction nozzles 391a, 391b, 391c and the suction nozzles 392a, 392b, 392c to be connected, , The waste liquid pumps 40a to 40c are respectively sent to the drainage pipes 31 collected into one. The waste liquid sent to the drain pipe 31 via the waste liquid pumps 40a to 40c is discarded through the drain pipe 31 to a drain outlet (not shown). Although the washed reaction container 30 is reused, the reaction container 30 may be discarded after completion of one measurement depending on the contents of the inspection.

  Next, the control mechanism 4 will be described. The control mechanism 4 includes a control unit 41, an input unit 42, an analysis unit 43, a storage unit 44, and an output unit 45. These units included in the sample transfer mechanism 2, the measurement mechanism 3, and the control mechanism 4 are electrically connected to the control unit 41.

  The control unit 41 is configured using a CPU or the like, and controls processing and operation of each unit of the analyzer 1. The control unit 41 performs predetermined input / output control on information input / output to / from each of these components, and performs predetermined information processing on this information. The control unit 41 operates all of the waste liquid pumps 40a to 40c when at least one of the plurality of measurement mechanisms 3a to 3c is operating.

  The input unit 42 is configured using a keyboard, a mouse, and the like, and acquires various information necessary for analyzing the sample, instruction information for the analysis operation, and the like from the outside. The analysis unit 43 performs component analysis of the sample based on the measurement result of the optical characteristics of the sample output from the photometry unit 38. The storage unit 44 is configured by using a hard disk that magnetically stores information and a memory that electrically loads various programs related to the process from the hard disk when the analyzer 1 executes the process, Various information including the analysis result of the sample is stored. The storage unit 44 may include an auxiliary storage device that can read information stored in a storage medium such as a CD-ROM, a DVD-ROM, or a PC card. The output unit 45 is configured using a display, a printer, a speaker, and the like, and outputs various information including the analysis result of the sample. The output unit 45 may output information according to a predetermined format to an external device via a communication network (not shown).

  In the analyzer 1 configured as described above, each sample container 32 in which each sample dispensing unit 32 is transferred to a predetermined position by the sample transfer mechanism 2 with respect to the plurality of reaction containers 30 that are sequentially conveyed in a row. The first reagent dispensing unit 35 dispenses the reagent in the first reagent container 34a, and each second reagent dispensing unit 37 dispenses the reagent in the second reagent container 36a. Note that after the stirring unit (not shown) stirs the inside of the reaction vessel 30, the photometry unit 38 performs optical measurement on the reaction liquid of the sample and the reagent, and the analysis unit 43 analyzes the measurement result. Analysis of the component of the specimen is automatically performed. In addition, the cleaning units 39a to 39c are cleaned while transporting the reaction container 30 transported after the measurement by the photometry unit 38 is completed, so that a series of analysis operations are continuously repeated.

  Next, the waste liquid pumps 40a to 40c shown in FIG. 1 will be described with reference to FIGS. Note that the waste liquid pumps 40a to 40c in FIG. 1 have substantially the same configuration, and in FIG. 2 and FIG. 3, for example, the waste liquid pump 40a will be described. As shown in FIG. 2, the waste liquid pump 40a is connected to the suction nozzles 391a and 392a by a pipe 31a, and connected to the drain pipe 31 provided at a position below the waste liquid pump 40a by a pipe 31b. In addition, each waste liquid pump 40a-40c is installed in the analyzer 1 so that it may become an upper position rather than the drain pipe 31. FIG.

  As shown in FIG. 3, the waste liquid pump 40a has a suction valve 401a at the suction port M1 for sucking liquid. When the suction valve 401a is not deformed, the suction port M1 is sealed so that liquid can flow in by deformation. When the suction pressure Pi is applied by the operation of the waste liquid pump 40a, the suction valve 401a is deformed downward due to elasticity as indicated by an arrow Y1. As a result, a gap is created in the suction port M1, and the liquid flowing in the pipe 31a is sucked into the waste liquid pump 40a as indicated by the arrow Y2.

  And the waste liquid pump 40a has the delivery valve 401b in the delivery port M2 which sends out a liquid. When the delivery valve 401b is not deformed, the delivery port M2 is sealed so that liquid can be delivered by deformation. When the delivery pressure Po is applied by the operation of the waste liquid pump 40a, the delivery valve 401b is deformed upward due to elasticity as indicated by an arrow Y3. As a result, a gap is generated at the delivery port M2, and the waste liquid in the waste liquid pump 40a is pushed out toward the pipe 31b as shown by the arrow Y4, passes through the pipe 31b as shown by the arrow Y5, and the arrow Y6 As shown, it is delivered to the drain 31.

  Furthermore, in the analyzer 1 according to the embodiment, when at least one of the plurality of measurement mechanisms 3a to 3c is operating, all of the waste liquid pumps 40a to 40c are controlled under the control of the control unit 41. It is operating. That is, in the analyzer 1, when at least one of the plurality of measurement mechanisms 3a to 3c is operating, the waste liquid pumps 40a to 40c are always operated, and the suction pressure Pi and the suction pressure Po are set to the suction valve 401a. In this state, liquid or gas is always sucked from the pipe 31a, and the sucked liquid or gas is always sent to the drain pipe 31 through the pipe 31b.

  On the other hand, in the conventional analyzer, as shown in FIG. 4, when some measurement mechanisms are stopped, the operation of the waste liquid pump 140a in the stopped measurement mechanism is also stopped. In this case, the operation of the waste liquid pump of the other measurement mechanism is in operation. For this reason, as shown by the arrow Y10, the waste liquid pump 140a has a direction from the drain pipe 131 connected to the waste liquid pump 140a, that is, a direction opposite to the waste liquid delivery direction, by the waste liquid delivery pressure by the waste liquid pump of another measurement mechanism. The pressure is applied. When a pressure in the direction opposite to the waste liquid delivery direction is applied to the stopped waste liquid pump 140a, the delivery valve 1401b in the stopped waste liquid pump 140a normally has a delivery port M21 between the pipe 131b. Since it is sealed and a pressure in the direction opposite to the waste liquid delivery direction is applied, the waste liquid pump 140a is not opened.

  However, in the analyzer, a chemical solution such as a reagent or a cleaning solution is sent out as a waste solution, and the valve in the waste solution pump is more likely to deteriorate as a result of coming into contact with the chemical solution than in contact with water or the like. In particular, since these suction valve 1401a and delivery valve 1401b are often made of rubber, they are affected by contact with a chemical solution, and the shape of the valve is often deformed in the direction of warping. When the delivery valve 1401b in the waste liquid pump is deteriorated and the sealing function is not sufficiently functioning, a pressure in the direction opposite to the waste liquid delivery direction is applied to the waste liquid pump 140a which is stopped as shown by the arrow Y10, and the pressure If it is not sufficient to close the delivery valve 1401b deformed in the opening direction, a gap remains in the delivery port M21. As a result, when the waste liquid and air in the drain pipe 131 climbs up the pipe 131b as shown by the arrow Y11 in FIG. 4, the scooping from the drain pipe 131 through the gap of the outlet M21 as shown by the arrow Y12. The rising waste liquid or air has flowed into the waste liquid pump 140a.

  Further, when the suction valve 1401a in the waste liquid pump deteriorates and the sealing function is not sufficiently functioning, a pressure in the direction opposite to the waste liquid delivery direction is applied to the waste liquid pump 140a which is stopped as shown by the arrow Y10, and If it is not sufficient to close the suction valve 1401a deformed in the direction in which the pressure opens, a gap remains in the suction port M11. As a result, as shown by the arrow Y15, the waste liquid in the waste liquid pump 140a flows back into the pipe 131a from the gap of the suction port M11, and the back-flowed waste liquid flows into the stopped measurement mechanism, for example, via the open port M13. There was a problem of overflowing.

  In particular, the waste liquid in the analyzer is a mixture of detergent for cleaning the reaction container. When the waste liquid mixed with this detergent flows back together with air, even if the waste liquid C is trapped in the trap in the tube 131b, the air flows back and flows into bubbles. Furthermore, even if the amount of the waste liquid mixed with the detergent is small, it tends to be a large amount of bubbles due to the backflowed air. And since this bubble B is light in weight, it is easy to move according to the flow of the backflowed air. As a result, the bubble B was pushed by the backflowed air and overflowed from the opening M13 via the waste liquid pump 140a.

  On the other hand, in the analyzer 1 according to the present embodiment, when at least one of the plurality of measurement mechanisms 3a to 3c is operating, the waste liquid pumps 40a to 40c are always operated and the pipe 31a is always operated. The liquid and the gas are sucked in, and the liquid and the gas are always sent to the drain pipe 31 through the pipe 31b. For this reason, in the waste liquid pumps 40a to 40c, when at least one of the plurality of measurement mechanisms 3a to 3c is operating, the liquid and gas are always sent to the drain pipe 31 according to the waste liquid delivery direction. Thus, the waste liquid and the gas flow from the drain pipe 13 into the waste liquid pump 40a do not occur. Accordingly, in the analyzer 1, the backflow of waste liquid and air to the waste liquid pumps 40 a to 40 c does not occur, so that the backflow waste liquid does not overflow into the analyzer 1.

  As described above, the analyzer 1 according to the embodiment prevents backflow by always operating all of the waste liquid pumps 40a to 40c when at least one of the plurality of measurement mechanisms 3a to 3c is operating. Therefore, it is possible to reliably prevent the backflow of the waste liquid only by changing the control process without changing the apparatus configuration.

  In addition, as the analyzer according to the present embodiment, the analyzer 1 in which the drain pipes 31 are combined has been described. However, the present invention is not limited to this, and an analysis having a plurality of drain pipes as shown in FIG. It can also be applied to devices.

  In this case, the analyzer 201 shown in FIG. 5 discards the reaction liquid in the reaction container 30 sucked by the suction nozzles 391a to 391c and the liquid containing the detergent injected into the reaction container 30 at the drain outlet. And a waste water drain pipe 312 for discarding liquid containing pure water injected into the reaction vessel 30 sucked by the suction nozzles 392a to 392c into the drain outlet. And each measuring mechanism 203a-203c in the analyzer 201 includes waste liquid pumps 401a-401c connected to the respective suction nozzles 391a, 391b, 391c and the concentrated waste liquid drain pipe 311; and suction nozzles 392a, 392b, 392c; Waste liquid pumps 402 a to 402 c connected to the light waste liquid drain pipe 312 are provided. Similarly to the control unit 41 shown in FIG. 1, the control mechanism 204 includes the waste liquid pumps 401 a to 401 c and the waste liquid pumps 402 a to 402 c when at least one of the plurality of measurement mechanisms 203 a to 203 c is operating. A control unit 241 for operating everything is provided. Thus, even when a plurality of drainage pipes are provided, while each measuring mechanism is in operation, by always operating all of the waste liquid pumps 401a to 401c and 402a to 402c connected to each drainage pipe, It is possible to prevent the backflow of waste liquid and gas from each drain pipe.

  Further, as in the analysis apparatus 301 shown in FIG. 6, the waste liquid pumps connected to the drain pipe 31 are combined into one waste liquid pump 40, and the control unit 341 in the control mechanism 304 operates each waste liquid pump 40 to operate each measurement mechanism 303 a. Even when the waste liquid discharged from ˜303c is sent to the drain pipe 31 in a lump, the same effect as in the embodiment can be obtained. When there are a plurality of drainage pipes such as the concentrated wastewater drainage pipe 311 and the light wastewater drainage pipe 312 as in the analysis apparatus 401 shown in FIG. 7, the waste liquid sucked by the suction nozzles 391a to 391c. A waste liquid pump 401 that collectively sends the waste liquid to the concentrated waste liquid drain pipe 311 and a waste liquid pump 402 that collectively sends the waste liquid sucked by the suction nozzles 392a to 392c to the light waste liquid drain pipe 312. The control unit 441 in the mechanism 404 collects the waste liquid discharged from each of the measurement mechanisms 403a to 403c by operating the waste liquid pump 401 and the waste liquid pump 402 into the concentrated waste liquid drain pipe 311 or the light waste liquid drain pipe 312 respectively. Send it out.

  Further, the analysis devices 1, 201, 301, 401 described in the above embodiment can be realized by executing a program prepared in advance by a computer system. This computer system implements the processing operation of the analyzer by reading and executing a program recorded on a predetermined recording medium. Here, the predetermined recording medium is not only a “portable physical medium” such as a flexible disk (FD), a CD-ROM, an MO disk, a DVD disk, a magneto-optical disk, and an IC card, but also inside and outside the computer system. It includes any recording medium that records a program readable by a computer system, such as a “communication medium” that holds the program in a short time when transmitting the program, such as a hard disk drive (HDD) provided. In addition, this computer system obtains a program from a management server or another computer system connected via a network line, and executes the obtained program to realize the processing operation of the analyzer.

It is a schematic diagram which shows the structure of the analyzer concerning embodiment. It is a perspective view of the waste liquid pump shown in FIG. It is a figure explaining the internal structure of the waste liquid pump shown in FIG. It is a figure explaining the internal structure of the waste liquid pump concerning a prior art. It is a schematic diagram which shows the other structure of the analyzer concerning embodiment. It is a schematic diagram which shows the other structure of the analyzer concerning embodiment. It is a schematic diagram which shows the other structure of the analyzer concerning embodiment.

Explanation of symbols

1, 201, 301, 401 Analyzer 2 Sample transport mechanism 3a-3c, 203a-203c, 303a-303c, 403a-403c Measurement mechanism 4, 204, 304, 404 Control mechanism 21a Sample container 21b Sample rack 30 Reaction container 31, 131 Drainage pipe 311 Drainage pipe for concentrated waste liquid 312 Drainage pipe for light waste liquid 31a, 31b, 131a, 131b Pipe 32 Sample dispensing part 33 Reaction table 34 First reagent storage 34a First reagent container 35 First reagent dispensing part 36 First 2 reagent storage 36a 2nd reagent container 37 2nd reagent dispensing part 38 photometry part 39a-39c washing | cleaning part 391a-391c, 392a-392c suction nozzle 40, 40a-40c, 401, 401a-401c, 402, 402a-402c waste liquid Pump 401a, 1401a Suction valve 401b, 1401 Delivery valve 41,241,341,441 controller 42 input unit 43 analyzing unit 44 memory unit 45 output unit

Claims (4)

In an analyzer equipped with a plurality of measurement mechanisms for performing a measurement process on a reaction solution of a sample and a reagent in a reaction container,
A pump that is provided in each measurement mechanism and sucks the liquid in the reaction container sucked by the suction nozzle to be connected to the drainage pipe;
When at least one of the plurality of measurement mechanisms is operating, control means for operating all of the pumps;
An analyzer characterized by comprising:   The pump has a suction valve that allows the liquid to flow in by an elastic deformation at a suction port that sucks the liquid, and has a delivery valve that allows the liquid to flow out by an elastic deformation at a delivery port that sends out the liquid The analyzer according to claim 1. The drain pipes are a first drain pipe and a second drain pipe,
The pump has, for each measurement mechanism, a first pump provided corresponding to the first drain pipe and a second pump provided corresponding to the second drain pipe.
The control means operates all of the first pump and all of the second pump when at least one of the measurement mechanisms is operating. 2. The analyzer according to 2.   The analyzer according to any one of claims 1 to 3, wherein the liquid that the pump sends out to the drain pipe is a cleaning liquid that cleans the inside of the reaction container or the reaction liquid.

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