JP4160364B2 - Reagent container and automatic analyzer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reagent container and an automatic analyzer, and more particularly to a reagent container and an automatic analyzer that can prevent the evaporation / degeneration of the reagent, prevent the occurrence of contamination, and can be easily and inexpensively manufactured.
[0002]
[Prior art]
Conventionally, in an automatic analyzer, a plurality of reagent containers containing reagents are generally arranged and stored on a mounting table rotatably provided in a reagent storage. . If reagent dispensing is required, rotate the table above, move the reagent container to the dispensing point, then lower the reagent probe into the reagent container and aspirate the required amount of reagent. It is configured. In addition, when the reagent container is stored with the reagent container being opened, it is generally kept at a temperature of about 5 to 10 ° C. in order to prevent qualitative deterioration of the reagent.
[0003]
However, at low temperatures, the humidity around the reagent container is low, so that the reagent evaporates and its concentration changes. Further, when a plurality of different types of reagents are installed in the reagent storage, for example, the acid component in the reagent evaporates, causing other defects such as alteration of other reagents or rusting inside the reagent storage.
[0004]
Further, the upper opening for the reagent is sealed with an elastic film such as plastic or rubber, and when the reagent is sucked, the elastic film may be stabbed with a reagent probe to be sucked. This is so-called piercing dispensing. However, in this operation, the evaporation of the reagent can be prevented, but a mechanical load is applied to the probe every time the reagent is sucked. Therefore, it is necessary to strengthen the probe or to make the reagent dispensing mechanism highly rigid. In addition, there is a possibility that a fragment of the elastic film may be attached to the probe tip, which causes a problem in dispensing accuracy.
[0005]
Accordingly, in view of such circumstances, a technique has been proposed in which a packing for preventing evaporation is attached to the cover portion of the reagent cold storage (see, for example, Patent Document 1 and Patent Document 2).
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-271311 [Patent Document 2]
Japanese Patent Laid-Open No. 2000-105240
[Problems to be solved by the invention]
However, in the conventional technology in which the packing for preventing evaporation is attached to the cover of the reagent cooler, if the reagent is attached to the upper surface of the opening of the reagent container, these reagents are attached to the packing material. Therefore, there is a possibility that the opening of another reagent container may be contaminated by touching this packing material, and if these are different reagents, there is a problem that the analysis data will be abnormal. It was.
[0008]
The present invention has been made in view of the above, and provides a reagent container for an automatic analyzer that can prevent the evaporation / degeneration of a reagent, prevent the occurrence of contamination, and can be easily and inexpensively manufactured. With the goal.
[0009]
Another object of the present invention is to provide an automatic analyzer that can prevent the evaporation / degeneration of a reagent, prevent the occurrence of contamination, and can be easily and inexpensively manufactured.
[0010]
[Means for Solving the Problems]
To achieve the above object, a reagent container according to a first invention includes a container body having an opening, and a cap made of an elastic material attached to the opening of the container body and closing the opening. The cap has a notch, and a cylindrical member is pressed and inserted through the notch from outside to elastically deform the vicinity of the notched portion, and the inside and outside of the container main body communicate with each other via the cylindrical member. It is formed as follows.
[0011]
The reagent container according to the second invention is a container body having an opening, a cap made of an elastic material attached to the opening of the container body and closing the opening, and freely pressable in the cap direction from the outside. And a cylindrical guide pipe urged to return to the position before pressing when the pressing force is released, and attached to the opening of the container body covering the cap, And a reagent container lid that holds the guide pipe movably in a state where the upper opening of the guide pipe is exposed to the outside, and the cap has a notch, and the guide pipe is inserted into the notch by an external force. By pressing and inserting, the vicinity of the cut portion is elastically deformed, and the inside and outside of the container body communicate with each other through the guide pipe. .
[0012]
According to a third aspect of the present invention, there is provided an automatic analyzer comprising: a container body having an opening; and a cap made of an elastic material that is attached to the opening of the container body and closes the opening. And is formed so that the cylindrical member is elastically deformed by pressing and inserting the cylindrical member from the outside into the notch so as to communicate with the inside and outside of the container body via the cylindrical member. A plurality of circumferentially arranged reagent containers, and a turntable formed to be rotatable; a storage case for storing the reagent containers placed on the mount table at a constant temperature; and the cap of the reagent containers A lid opening device for selectively opening the tube by a guide pipe as a cylindrical member, a position detection sensor for detecting the position of the reagent container placed on the mounting table, and the type of reagent contained in the reagent container. Receiving reagent detection sensors and receiving signals from the respective sensors, rotating the mounting table to position a desired reagent container at a dispensing position, and then driving a guide pipe of the lid opening device to A control device that forms an opening in the cap by pressing and deforming the cut portion of the cap, and lowers the dispensing probe in synchronization with the cap and inserts the guide pipe into the reagent container. It is provided with.
[0013]
According to a fourth aspect of the present invention, there is provided an automatic analyzer having a container body having an opening, a cap made of an elastic material attached to the opening of the container body and closing the opening, and pressed in the cap direction from the outside. A cylindrical guide pipe that is freely formed and urged so as to return to the position before pressing when the pressing force is released, and is attached to the opening of the container body so as to cover the cap. And a reagent container lid for holding the guide pipe movably in a state where the upper opening of the guide pipe is exposed to the outside, and the cap has a notch, and the guide pipe is externally applied to the notch. A reagent container formed so as to be elastically deformed in the vicinity of the cut portion by being pressed by and inserted, and to communicate with the inside and outside of the container body via the guide pipe. A plurality of circumferentially mounted mounting tables that are rotatably formed, a storage case that stores the reagent containers mounted on the mounting table at a constant temperature, and the caps of the reagent containers that are connected to the guide pipes A lid opening device that selectively opens by pressing, a position detection sensor that detects the position of the reagent container placed on the mounting table, and a reagent that detects the type of reagent contained in the reagent container Rotating the mounting table in response to signals from the detection sensors and the sensors, positioning a desired reagent container at the dispensing position, driving the lid opening device to press the guide pipe _, An opening is formed in the cap by pressing and deforming the cut portion of the cap, and the dispensing probe is lowered in synchronization with this to pass through the guide pipe and into the reagent container. Characterized by comprising a control device for input.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a reagent container and an automatic analyzer according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
[0015]
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing a reagent container and an automatic analyzer according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view showing a state where a cap of the reagent container is opened by a guide pipe, and FIG. FIG. 4 is a cross-sectional view showing the AA cross section of the cap shown in FIG. 3.
[0016]
As shown in FIGS. 1 to 4, the reagent container 1 includes a container main body 2 having an opening 3 at the top, and an opening 3 of the container main body 2. And a cap 4 having four cap pieces 4b that can be elastically deformed by forming a cross-shaped cut 4a. The container body 2 is made of, for example, polyethylene or polypropylene, and the cap 4 is made of, for example, an elastic member such as rubber.
[0017]
That is, in the reagent container 1, when no external force is applied to the cap 4, the state in which the four cap pieces 4b are closed (see FIG. 4) is maintained to prevent evaporation of the reagent liquid in the container body 2, which will be described later. When the notch 4a of the cap 4 is pressed downward by the guide pipe 6, the four cap pieces 4b are elastically deformed downward and bent as the guide pipe 6 enters, so that an opening is formed in the reagent container 1. (See FIG. 2).
[0018]
Therefore, as shown in FIG. 2, the inside and outside of the reagent container 1 communicate with each other through the opening 6a of the guide pipe 6, and the probe 30 and the cap 4 are inserted by inserting the reagent aspirating probe 30 through the opening 6a. The tip of the probe 30 can be allowed to enter the reagent container 1 without contact with the (cap piece 4b).
[0019]
On the other hand, when the reagent aspiration by the probe 30 is completed and the probe 30 and the guide pipe 6 are raised, the cap piece 4b is released from the pressing force of the guide pipe 6, so that the cap piece 4b returns to the closed state before elastic deformation. Thus, evaporation of the reagent solution is prevented.
[0020]
Next, an automatic analyzer to which the reagent container 1 is applied will be described with reference to FIGS. As shown in the figure, the automatic analyzer is configured such that a plurality of reagent containers 1 that are formed to be rotatable and on which a plurality of reagent containers 1 are arranged and arranged circumferentially, and a plurality of reagent containers that are placed on the stage 9. The storage case 10 for storing 1 at a constant temperature (for example, kept at 5 to 10 ° C.) using a cooling means (not shown) and the cap 4 for closing the opening 3 of the reagent container 1 are selectively opened. A lid opening device 20, a position detection sensor (not shown) for detecting the position of the reagent container 1 placed on the mounting table 9, and a reagent detection sensor for detecting the type of reagent contained in the reagent container 1 (Not shown) and receiving the signals from the sensors, the table 9 is rotated to position the desired reagent container 1 at the dispensing position, and then the lid opening device 20 is driven to open the cap 4. And the probe 30 is lowered in synchronization with this, And a control device for entering the drug container 1 (not shown).
[0021]
The storage case 10 includes a reagent storage 11 and a lid 12 having an opening 12 a for inserting the probe 30. The mounting table 9 is connected to a shaft 14 rotatably supported by a bearing 13 and is formed to be rotatable. The shaft 14 includes a gear 15 that meshes with a gear 17 connected to a motor 16. That is, the mounting table 9 is configured to rotate by a predetermined amount when the motor 16 is operated by a command from a control device (not shown) and the shaft 14 via the gears 17 and 15 is rotated.
[0022]
The lid opening device 20 provided in the storage case 10 opens the cap 4 of the reagent container 1 to secure an entry space for the probe 30 into the reagent container 1 and prevent contact between the probe 30 and the cap 4. A cylindrical guide pipe 6 that moves, an arm 5 that holds the guide pipe 6, a slide shaft 21 that slides the guide pipe 6 up and down via the arm 5, and a connecting portion 22 that connects the slide shaft 21. And a guide 24 for guiding the slide shaft 21.
[0023]
Next, the operation will be described. In order to analyze a plurality of types of analysis items, a reagent container 1 containing reagents with different items is placed on the mounting table 9 of the automatic analyzer. The controller 16 (not shown) issues a command to drive the motor 16 and rotates the shaft 14 via the gears 17 and 15 so that the reagent container 1 corresponding to the selected analysis item is arranged directly below the probe 30. Then, the mounting table 9 is rotated by a predetermined amount.
[0024]
That is, when the selected reagent container 1 is arranged directly below the probe 30, the operation of the motor 16 is stopped and the solenoid 23 is energized to lower the slide shaft 21 and the arm 5. The notch 4a portion of the cap 4 of the container 1 is pressed downward. Thereby, as the guide pipe 6 enters, the four cap pieces 4b are elastically deformed and bent downward, and an opening is formed in the reagent container 1, so that the inside and outside of the reagent container 1 can be moved through the opening 6a of the guide pipe 6. Communicate.
[0025]
Next, the probe 30 is lowered by a driving device (not shown), is inserted through the guide pipe 6, enters the reagent container 1, and sucks the reagent. At this time, because the guide pipe 6 secures a space for the probe 30 to enter the reagent container 1, the probe 30 and the cap 4 (cap piece 4b) do not come into contact with each other.
[0026]
Therefore, the probe 30 to be washed before the next reagent is aspirated only needs to be immersed in the reagent, and can be easily washed, saves the washing liquid, and can reduce the waste liquid generated in the washing. Further, there is no influence of carryover, and there is no possibility of diluting the reagent solution by bringing the cleaning solution attached to the probe 30.
[0027]
Then, the probe 30 that has finished the suction operation is raised by a driving device (not shown). At the same time, the solenoid 23 is energized to raise the slide shaft 21 and the arm 5 and raise the guide pipe 6 by a predetermined amount. Then, the lower end portion of the guide pipe 6 moves away from the cap 4, so that the elastically deformed cap piece 4 b is released from the pressing force of the guide pipe 6 and returns to the closed state before elastic deformation.
[0028]
That is, the opening 3 of the reagent container 1 is closed again by the cap 4, and the evaporation of the reagent in the reagent container 1 is prevented. The reagent sucked by the probe 30 is discharged into a reaction container (not shown) and analyzed. By repeating such an operation, continuous analysis can be performed for a plurality of types of analysis items.
[0029]
As described above, according to the reagent container 1 and the automatic analyzer according to the first embodiment, since it has a simple configuration, it can be easily and inexpensively manufactured, and the opening 3 of the reagent container 1 has a cap 4. Therefore, it is possible to prevent the reagent from evaporating or denatured. Moreover, since the cap 4 is provided for each reagent container 1, the occurrence of contamination can be prevented.
[0030]
Further, since the automatic analyzer is configured such that the advance / retreat operation of the probe 30 during the reagent aspiration and the opening / closing operation of the cap 4 are synchronized, it is possible to efficiently perform multi-item reagent analysis. Further, since the lid opening device 20 has a simple configuration in which the solenoid 23, the slide shaft 21, the arm 5, the guide pipe 6 and the like are combined, it can be easily and inexpensively manufactured.
[0031]
In Embodiment 1 described above, the solenoid 23 is used as the driving means for the slide shaft 21 and the like. However, the present invention is not limited to this, and may be driven by a motor, for example. The shape of the reagent container 1 is not limited to the illustrated example (cylindrical shape), and may be a rectangular parallelepiped or the like.
[0032]
In addition, the cut 4a of the cap 4 has been described as being formed in a cross shape. However, the present invention is not limited to this, and at least one cut may be provided, and the opening of the cap 4 is appropriate when the guide pipe 6 enters. Any shape can be used as long as the shape can be formed.
[0033]
Embodiment 2. FIG.
5 is a cross-sectional view showing a state in which the cap of the reagent container according to the second embodiment of the present invention is closed, FIG. 6 is a cross-sectional view showing a state in which the cap of the reagent container is open, and FIG. Sectional drawing which shows an automatic analyzer, FIG. 8: is principal part sectional drawing which shows a lid | cover opening | release apparatus and a reagent container. In the following description, members that are the same as or correspond to those already described are denoted by the same reference numerals, and redundant description is omitted or simplified.
[0034]
First, the reagent container 1 will be described with reference to FIGS. A screw portion 2 a is provided on the outer peripheral edge of the opening 3 of the container body 2, and a cap 4 is attached to the opening 3. The reagent container lid 7 is mounted by screwing a screw portion 7b into the screw portion 2a of the container body 2, and has an opening 7a on the ceiling surface 7c.
[0035]
The guide pipe 8 formed so as to be able to protrude and retract from the opening 7 a of the reagent container lid 7 corresponds to the guide pipe 6 shown in the first embodiment, and opens and closes the cap 4 to open the reagent container 1 of the probe 30. This is to secure a space for entering the inside and prevent contact between the probe 30 and the cap 4. The guide pipe 8 has a double pipe structure including an inner pipe portion 8a and an outer pipe portion 8b shorter than the inner pipe portion 8a, and both are connected by a ceiling surface 8d having an opening portion 8c. .
[0036]
As shown in FIG. 6, the length of the outer pipe portion 8 b is such that the guide pipe 8 is pressed by a pressing arm 35 described later, and the ceiling surface 8 d of the guide pipe 8 and the ceiling surface 7 c of the reagent container lid 7 are flush with each other. It is set to such an extent that it can be. Further, as shown in FIG. 6, the length of the inner pipe portion 8a is such that the guide pipe 8 is pressed by a pressing arm 35 described later, and the ceiling surface 8d of the guide pipe 8 and the ceiling surface 7c of the reagent container lid 7 are surfaces. When it becomes one, it is set to such an extent that the cap piece 4b can be completely pushed out by the guide pipe 8. That is, the tip of the cap piece 4 b is not exposed to the inside of the opening 8 c of the guide pipe 8, and the contact between the cap piece 4 b and the probe 30 is prevented when entering the probe 30.
[0037]
A compression coil spring 32 that urges the guide pipe 8 upward is wound around the outer periphery of the inner pipe portion 8a. A stopper portion 8e for hooking on the ceiling surface 7c of the reagent container lid 7 is provided at the lower peripheral edge of the outer pipe portion 8b, and the upper limit position of the guide pipe 8 biased by the compression coil spring 32 is regulated.
[0038]
On the cap 4, a washer 33 having a washer hole 33a is placed. The inner diameter of the washer hole 33a is slightly larger than the outer diameter of the inner pipe portion 8a so that the inner pipe portion 8a can be inserted, and the lower end of the compression coil spring 32 at the outer peripheral edge of the washer hole 33a. It is formed so that the part can be locked.
[0039]
Next, the automatic analyzer will be described. The difference from the configuration shown in FIG. 1 of the first embodiment is that a pressing arm 35 for pressing the guide pipe 8 is provided at the lower end of the slide shaft 21 as shown in FIGS. It is a point. The pressing arm 35 is provided with an opening 35 a for inserting the probe 30 so as to be coaxial with the opening 12 a of the lid 12 and the opening 8 c of the guide pipe 8. The other configuration is the same as that shown in the first embodiment, and a duplicate description is omitted.
[0040]
Next, the operation will be described mainly with reference to FIG. In order to analyze a plurality of types of analysis items, a reagent container 1 containing reagents with different items is placed on the mounting table 9 of the automatic analyzer. The controller 16 (not shown) issues a command to drive the motor 16 and rotates the shaft 14 via the gears 17 and 15 so that the reagent container 1 corresponding to the selected analysis item is arranged directly below the probe 30. Then, the mounting table 9 is rotated by a predetermined amount.
[0041]
That is, when the selected reagent container 1 is disposed directly below the probe 30, the operation of the motor 16 is stopped and the solenoid 23 is energized to lower the slide shaft 21 and the pressing arm 35, and the lower end of the pressing arm 35 The ceiling surface 8d of the guide pipe 8 of the reagent container 1 is pressed.
[0042]
Then, as shown in FIGS. 6 and 7, the compression coil spring 32 of the guide pipe 8 is compressed by this pressing force, and the guide pipe 8 is pushed down, so that the lower end of the guide pipe 8 moves the notch 4 a portion of the cap 4. Press down. Thus, as the guide pipe 8 enters, the four cap pieces 4b are elastically deformed and bent downward, and an opening is formed in the reagent container 1, so that the inside and outside of the reagent container 1 can be moved through the opening 8c of the guide pipe 8. Communicate.
[0043]
Next, the probe 30 is lowered by a driving device (not shown), is inserted through the guide pipe 8, enters the reagent container 1, and sucks the reagent. At this time, because the guide pipe 8 secures a space for the probe 30 to enter the reagent container 1, the probe 30 and the cap 4 (cap piece 4b) do not come into contact with each other.
[0044]
Therefore, the probe 30 to be washed before the next reagent is aspirated only needs to be immersed in the reagent, and can be easily washed, saves the washing liquid, and can reduce the waste liquid generated in the washing. Further, there is no influence of carryover, and there is no possibility of diluting the reagent solution by bringing the cleaning solution attached to the probe 30.
[0045]
Then, the probe 30 that has finished the suction operation is raised by a driving device (not shown). At the same time, the solenoid 23 is energized to raise the slide shaft 21 and the pressing arm 35. Then, since the guide pipe 8 is released from the pressing force of the pressing arm 35, it is lifted by the urging force of the compression coil spring 32 and returns to the position shown in FIG. At the same time, since the lower end portion of the guide pipe 8 moves away from the cap 4, the elastically deformed cap piece 4b is released from the pressing force of the guide pipe 8 and returns to the closed state before elastic deformation (FIG. 5).
[0046]
That is, the opening 3 of the reagent container 1 is closed again by the cap 4, and the evaporation of the reagent in the reagent container 1 is prevented. The reagent sucked by the probe 30 is discharged into a reaction container (not shown) and analyzed. By repeating such an operation, continuous analysis can be performed for a plurality of types of analysis items.
[0047]
In addition, the operator removes the reagent container lid 7 attached when the reagent is used from the container main body 2 and attaches the cap 4 to the opening 3 of the container main body 2. By reattaching a new lid composed of 32 and washer 33, the same effect as described above can be obtained, and good analysis without being affected by contamination of the reagent attached to the back surface of the cap 4 Data can be obtained.
[0048]
As described above, according to the reagent container 1 and the automatic analyzer according to the second embodiment, since it has a simple configuration, it can be easily and inexpensively manufactured, and the opening 3 of the reagent container 1 is provided with the cap 4. Therefore, it is possible to prevent the reagent from evaporating or denatured. In addition, it is possible to prevent the occurrence of contamination between reagents due to carryover.
[0049]
Further, since the automatic analyzer is configured such that the advance / retreat operation of the probe 30 during the reagent aspiration and the opening / closing operation of the cap 4 are synchronized, it is possible to efficiently perform multi-item reagent analysis. Moreover, since the lid opening device 20 has a simple configuration in which the solenoid 23, the slide shaft 21, the pressing arm 35, and the like are combined, it can be easily and inexpensively manufactured.
[0050]
In Embodiment 2 described above, the compression coil spring 32 is used as the return means of the guide pipe 8. However, the present invention is not limited to this. For example, a plate that can obtain a predetermined elastic force is used. A spring, rubber, sponge or the like can also be used.
[0051]
In addition, the reagent container lid 7 has been described as being screwed into the container body 2, but is not limited thereto, and may be a one-touch detachable type by providing a locking claw or the like.
[0052]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a reagent container for an automatic analyzer that can prevent evaporation and degeneration of a reagent, prevent occurrence of contamination, and can be easily and inexpensively manufactured. In addition, according to the present invention, it is possible to provide an automatic analyzer that can prevent the evaporation and alteration of the reagent, prevent the occurrence of contamination, and can be easily and inexpensively manufactured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a reagent container and an automatic analyzer according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state where a cap of a reagent container is opened by a guide pipe.
FIG. 3 is a plan view showing a cap of a reagent container.
4 is a cross-sectional view showing an AA cross section of the cap shown in FIG. 3;
FIG. 5 is a sectional view showing a state in which a cap of a reagent container according to a second embodiment of the present invention is closed.
FIG. 6 is a cross-sectional view showing a state in which the cap of the reagent container is opened.
FIG. 7 is a cross-sectional view showing a reagent container and an automatic analyzer.
FIG. 8 is a cross-sectional view of a main part showing a lid opening device and a reagent container.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reagent container 2 Container main body 2a Screw part 3 Opening part 4 Cap 4a Notch 4b Cap piece 5 Arm 6 Guide pipe 6a Opening part 7 Reagent container lid 7a Opening part 7b Screw part 7c Ceiling surface 8 Guide pipe 8a Inner pipe part 8b Outer pipe Portion 8c Opening 8d Ceiling 8e Stopper 9 Placement base 10 Storage case 11 Reagent cabinet 12 Lid 12a Opening 13 Bearing 14 Shaft 15 and 17 Gear 16 Motor 20 Lid opening device 21 Slide shaft 22 Connecting portion 23 Solenoid 24 Guide 30 Probe 32 Compression coil spring 33 Washer 33a Washer hole 35 Press arm 35a Through hole

Claims (2)

A container body having an opening;
A cap made of an elastic material attached to the opening of the container body and closing the opening;
A cylindrical guide pipe formed so as to be freely pressable in the cap direction from the outside and biased to return to a position before pressing when the pressing force is released;
A reagent container lid that is attached to the opening of the container body so as to cover the cap, and that holds the guide pipe movably forward and backward with the upper opening of the guide pipe exposed to the outside;
With
The cap has an incision, and the guide pipe is pressed and inserted into the incision by an external force to elastically deform the vicinity of the incision portion so that the inside and outside of the container body communicate with each other through the guide pipe. A reagent container which is formed. A container body having an opening, a cap made of an elastic material that is attached to the opening of the container body and closes the opening, is formed so as to be able to be pressed in the cap direction from the outside, and the pressing force is released. A cylindrical guide pipe urged so as to return to the position before pressing when it is applied, and the opening of the container body covering the cap, and the upper opening of the guide pipe being externally attached. And a reagent container lid that holds the guide pipe in a state where the guide pipe can be moved forward and backward. The cap has a notch, and the guide pipe is pressed through the notch by an external force and inserted in the vicinity of the notch portion. A plurality of reagent containers, which are formed so as to communicate with the inside and outside of the container body via the guide pipe, are arranged in a circumferential shape and are formed to be rotatable. And the stage was,
A storage case for storing the reagent container mounted on the mounting table at a constant temperature;
A lid opening device for selectively opening the cap of the reagent container by pressing the guide pipe;
A position detection sensor for detecting the position of the reagent container placed on the mounting table;
A reagent detection sensor for detecting the type of reagent contained in the reagent container;
In response to the signals from the sensors, the mounting table is rotated to position the desired reagent container at the dispensing position, and then the lid opening device is driven to press the guide pipe, and the cap is cut. A control device that forms an opening in the cap by pressing and deforming, and lowers the dispensing probe in synchronization with the cap and inserts the guide pipe into the reagent container. An automatic analyzer characterized by that.

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