JPH02156141A - Apparatus for holding liquid to be inspected - Google Patents

Abstract

PURPOSE:To achieve a preparation of a liquid to be inspected at emergency, a quick supply thereof and a simplified construction of a driving system by providing a centrifugal section within a housing device while the centrifugal section and a sample disc section use a positioning motor in common. CONSTITUTION:A sample disc section 102 is provided on the outer circumference of a centrifugal section 104 holding a plurality of centrifugal cups 103 in a ring concentric with the cups 103 to hold a sample cup 101 integral. The centrifugal section 103 housing a liquid object intended for centrifugal separation is rotated at a high speed with a motor 107 for centrifugal separation through a rotating shaft 106 to perform a centrifugal separation. In addition, with a positioning motor 112 mounted on either the rotating shaft 106 and a rotation transmitting means of the disc 102, the centrifugal section 104 or the disc section 102 are turned by a specified angle centered on the rotating shaft 106 to arrange the cups 103 or the cup 101 at a position where a liquid to be inspected is spotted by suction sequentially. Then, a driving force of the motor 112 is switched with a clutch 115 to be transmitted to the centrifugal section 104 and the disc section 102.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a biochemical analyzer that holds a plurality of sample cups containing a test liquid and sequentially supplies the test liquid to a suction and spotting means. The present invention relates to a test liquid storage device, and particularly relates to a test liquid storage device integrally equipped with centrifugation means.

(Prior Art) Qualitative or quantitative analysis of specific chemical components in a test liquid is a commonly performed operation in various industrial fields. In particular, quantitative analysis of chemical components or formed components in biological body fluids such as blood and urine is extremely important in the field of clinical biochemistry.

In recent years, dry type chemical analysis slides have been developed that can quantitatively analyze specific chemical components or formed components contained in a liquid to be tested by simply supplying a small amount of the liquid to be tested. Publication No. 53-21677, Japanese Unexamined Patent Publication No. 1983
-164356, etc.) has been put into practical use. Using these chemical analysis slides, it is possible to analyze sample liquids more easily and quickly than conventional wet analysis methods, so they are especially useful for medical institutions that need to analyze a large number of test liquids. This is preferable in research institutes, etc.

In order to analyze the chemical components in a test liquid using such a chemical analysis slide, the test liquid is placed on the chemical analysis slide in a measured amount and then placed in an incubator for a predetermined period of time. It is kept at constant temperature (incubation) to cause a color reaction (pigment formation reaction), and then 1 lll regular irradiation containing a wavelength pre-selected based on the combination of the components in the test liquid and the reagents contained in the reagent layer of the chemical analysis slide. This chemical analysis slide is irradiated with light and its reflected optical density is measured, thereby performing quantitative analysis of the chemical components and the like.

In this case, in the above-mentioned analysis at the medical institution, research institute, etc., it is necessary to analyze a large number of test liquids, and it is desirable to be able to perform this analysis automatically and continuously. For this reason, various proposals have been made regarding chemical analyzers that can automatically and continuously analyze test liquids using the above-mentioned chemical analysis slides (for example, JP-A-56-77746). issue). In addition, as a means of automatically and continuously analyzing the test liquid, a long tape-shaped test film containing a reagent is stored in place of the slide described above, and the test film is pulled out one by one. spotting, incubation,
Apparatus for making measurements have also been proposed (eg, US Pat. No. 3,52[i,480]). In this way, a device that uses a long tape-shaped test film can reduce running costs compared to a device that uses chemical analysis slides.
P1 constant can be performed continuously.

However, some body fluids removed from living organisms cannot be used as test fluids as they are. For example, whole blood is first centrifuged to produce serum or plasma. is used as the test liquid. The test liquid is usually stored in a sample cup for each sample, and the test liquid storage device holds a plurality of sample cups and sequentially moves these sample cups to a suction position where they are suctioned by a test liquid suction and spotting means. However, in the case of whole blood that requires centrifugation, it is first centrifuged in a centrifugal separator outside the biochemical analyzer, and the resulting test liquid such as serum or plasma is transferred to the sample cup. It is designed to be transferred and set in the test liquid storage device. However, in case of an emergency, - δ as soon as possible
Since it is necessary to perform p1 determination, it is not efficient to transfer the liquid from the centrifugal separator to the test liquid storage device as described above.

Therefore, the test liquid storage device is designed to hold sample cups arranged in an annular shape, and a centrifugal separation means is installed inside the sample cup, so that in case of an emergency, centrifugation is carried out within the storage device, It is conceivable to aspirate the direct wave test liquid from inside the cup after centrifugation along with the test liquid inside.

(Problem to be Solved by the Invention) However, as described above, the test liquid storage device equipped with centrifugation means has a positioning motor that sequentially moves the sample cup to the suction position, and a positioning motor that stores blood etc. for centrifugation. A centrifugal motor that rotates the centrifugal cup at high speed, and a positioning motor that sequentially moves the centrifugal cup to the suction position after centrifugation are required. These multiple motors make the device larger and more complex. Manufacturing costs are also expected to rise.

The present invention has been made in view of the above problems, and provides a test liquid that is equipped with a centrifugal separation means, enables quick generation and supply of a test liquid in an emergency, and has a simple drive system configuration. The purpose is to provide a containment device.

(Means for Solving the Problems) The test liquid storage device of the present invention comprises: a centrifugal section that integrally holds a plurality of centrifugation cups that house a liquid to be centrifuged, arranged in an annular shape; a sample disk unit that integrally holds a plurality of sample cups containing test liquid arranged in an annular shape concentric with the centrifugal separation cup on the outer periphery of the centrifugal part; Either a centrifugal separation motor connected to a planted rotating shaft and rotating the centrifugal section at high speed via the rotating shaft, or a rotation transmission means attached to the rotating shaft of the centrifugal section and the sample disk section. A positioning motor, which is attached to one side and rotates the centrifugal part or the sample disk part about the rotating shaft in predetermined angle increments to sequentially arrange the centrifugal separation cup or the sample cup at a suction position by the suction spotting means. , and a clutch that connects the positioning motor with the other of the rotating shaft of the centrifugal section and the sample disk section ρ of the rotation transmitting means, and is capable of transmitting the driving force of the positioning motor to the other. That is.

The centrifugal motor and positioning motor mentioned above are
The centrifugal motor and the positioning motor do not necessarily have to be separate bodies, and if the centrifugal motor can be equipped with an encoder and operated as a servo motor, the centrifugal motor and the positioning motor may be integrated.

In that case, since the positioning motor will be attached to the rotating shaft of the centrifugal section, the upper shear clutch will be able to transmit the rotation of the positioning motor to the sample disk section 1.

(Function) In the above test liquid storage device, by providing a centrifugal part inside the sample disk part, centrifugation can be performed within the storage device, and the obtained test liquid can be taken out directly. It becomes possible to quickly supply the test liquid in an emergency or the like. In addition, in the apparatus of the present invention, the driving force of the positioning motor is transmitted to both the centrifugal section and the sample disk section as necessary using a clutch, so that one positioning motor can be used to
Both the sample cup of the sample disk part and the centrifugation cup of the centrifugal part can be rotated by a predetermined angle and placed in the suction position. Therefore, according to the present invention, the device can be driven by two motors, the bojyoning motor and the centrifugal motor, or by one motor when both motors are integrated as described above. The drive system is simplified.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a biochemical analyzer equipped with a test liquid storage device according to an embodiment of the present invention.

The illustrated biochemical analyzer 1 is equipped with a transparent lid 2, and when the lid 2 is opened, the test liquid described below, a long test film 3 in the form of a long tape, etc. are inserted into the device 1. It is adapted to contain and retrieve. This device 1 includes
For example, a sample disk section 102 that accommodates sample disks 101 containing test fluids such as blood, urine, etc. arranged in a circular pattern; and a centrifugal separation system disposed inside the sample disk section that accommodates whole blood, etc. A test liquid storage device 100 is equipped with a centrifugal section 104 capable of holding a cup 103 for centrifugation, and the test liquid stored here is placed in a suction spot as described later. It is taken out and deposited by the means 5. The long test film 3 contains a plurality of reagents corresponding to 4 to 1 fixed items, such as containing a reagent that exhibits a color reaction with only the specific chemical component or formed component that is to be determined. Various types of long test films 3 are prepared. This long test film 3
The unused portion is wound in the film supply cassette 18, and the portion used for the above measurement is wound in the film winding cassette 19. Also these cassettes 1
8. In the central part of the rolls 18a and 19a in 19, after storing the long test film 3 in the apparatus 1, as will be described later, the film 3 is drawn out from the film supply cassette 18 and the film supply cassette 18 is
a hole 18b that engages with the rotating shaft of the motor for rewinding the interior;
, 19b are provided. The long test film 3 is stored in the apparatus 1 while being wound around a cassette 18, 19. The film supply cassette 18 and the film take-up cassette I9 are separated as shown in this figure. The test film storage means 6 is constructed so that unused portions of a plurality of long test films 3 can be stored in parallel so that 71111 determinations can be made for a plurality of items at the same time using this device 1.

The suction spotting means 5 has a suction spotting nozzle 7 at its tip, and is moved in the direction in which the rail 8 extends by a moving means 9 placed on the rail 8 to collect the test liquid from the test liquid storage device 100. It is taken out and spotted on the long test film 3 pulled out from the test film storage means 6 as will be described later. Further, the moving means 9 is configured to move the suction spotting means 5 in the vertical direction as well, and when the suction point pipe means 5 is moved in the left-right direction in which the rail 8 extends by this moving means 9, this The suction spotting means is in an elevated position, and is lowered when taking out the test liquid, spotting it, and cleaning as described later.

After the suction spot application nozzle 7 has applied the spot on the test film, the suction spot application nozzle 7 is connected to the test film storage means 6 and the test liquid storage device 100.
Between them, a nozzle cleaning section I is arranged close to both.
It is cleaned with O and reused for the next spotting.

The spotted test film is incubated in an incubator as described below, and measured by a photometric means.

Control of the overall operation of the device 1, processing of measurement data, etc. are performed by a circuit section 11 and a computer 12 connected to this circuit section 11.
This is done by The operation/display section 13 provided on the front side of the circuit section 11 is equipped with a power switch for the device 1, an ammeter for monitoring the current consumption in the device 1, and the like. The computer 12 includes a keyboard 14 for giving instructions to the device 1, a CRT display I5 for displaying auxiliary information for instructions, measurement results, etc., a printer 16 for printing out measurement results, and a keyboard 14 for giving various instructions to the device 1. A floppy disk device 17 that accommodates a floppy disk for storing commands, measurement result data, etc.
is provided.

FIG. 2 is a plan view of the main parts of the biochemical analyzer 1 whose perspective view is shown in FIG.

The test film storage means 6 is configured such that the dot positions 22 of all the test films pulled out from therein are arranged in a straight line, and furthermore, the nozzle cleaning section IO1 and the test liquid storage device 100 are arranged on this straight line. 3 shown with diagonal lines inside
It is configured such that four test liquid extraction positions P are arranged.

The test liquid storage device 100 has a sample disk section 102 that can hold sample cups containing the test liquid arranged in two concentric rings, and the sample disk section 102 is driven by a drive system described later. , is rotated by a predetermined angle in the direction of arrow A, and the sample cups on the outer circumference or the sample cups 101 on the inner circumference are sequentially positioned at the take-out position P. In addition, in the test liquid storage device 100, a centrifugal section 104 disposed inside the sample disk section is connected to the sample cup 10.
For example, four centrifugation cups 103 can be held on a ring concentric with centrifugation cup 1, and by rotating at high speed, body fluid (for example, whole blood) in the centrifugation cups is centrifuged. Furthermore, after the centrifugation is completed, the centrifugal section 104
Similarly to the sample disk unit 102, the centrifugal separation cups 103 are sequentially positioned at the extraction position P where the contents are sucked by the suction point attachment nozzle 7 by being rotated by a predetermined amount. In other words, when whole blood is centrifuged and stratified, plasma floats to the top and clots sink to the bottom, but with this storage device, there is no need to transfer the plasma or serum, which is the test liquid, to a separate container from the clots. It can be taken out by suction spotting means 5. Note that it is desirable that a lid be placed over each of the sample cups 101 and the centrifugal separation cup 103 so that the lid is removed when each cup is placed at the take-out position P.

The suction spotting means 5 is moved in the direction in which the rail extends by a moving means 9 mounted on the rail 8, and takes out the liquid to be tested from the takeout position P and places it on the long test film at the spotting position 22.
Dot on.

FIG. 3 shows a main part of a cross section taken along line xx' in FIG. 2.

The long test film 3 is placed in a film supply cassette 1.
8 and the film winding cassette 19,
installed inside the device. The film supply cassette 18 is housed in a cold storage 50 whose interior is temperature-controlled at, for example, 4°C, and the film winding cassette 19 is housed in a winding chamber 51. If the unused portion of the long test film 3 is stored in the film supply cassette 18 in this manner, the unused long test film 3 can be stored in the cold storage 50 without being touched. The cold storage 50 has a cold storage wall 50 using a heat insulating material.
a, and on one side of this cold storage wall 50a, there is a cold storage 5
A cooling/dehumidifying device 58 is attached to keep the inside of the refrigerator 50 at a predetermined low temperature and low humidity, and a fan 60 circulates the air inside the refrigerator 50.

When the film supply cassette 18 and the film winding cassette 19 are housed in the cold storage 5o and the winding chamber 51, respectively, as described above, the film inside the film winding cassette 19 is
A rotating shaft of a winding motor 53A, which is a conveyance means for the long test film 3 provided in this winding chamber 51, is engaged with a hole 19b provided in the center of the winding chamber 51.
3A, the long test film 3 is pulled out from the film supply cassette 18 through the outlet 50b of the cold storage 50, and is wound onto the film winding cassette 19. On the other hand, a rotation shaft of a motor 53B for rewinding the film engages with a hole 18b provided in the center of the reel 18a of the film supply cassette 18, as will be described later.

If the used portion of the long test film 3 is stored in the film winding cassette 19 as described above,
It is possible to take out the used film soiled with the liquid to be tested and dispose of it without touching it. Regarding this disposal, instead of winding the used film in the film winding cassette 19, the film winding cassette 19 is eliminated and the film can be freely attached to and removed from the device 1 that stores the film in the winding chamber 51. A cutter for cutting the used film is placed near the entrance of the winding chamber 51, and the used film is cut and stored in the box. It may be possible to take out the entire box from the device 1 without touching the film and dispose of the used film. In this case, the test film may be transported by providing transport rollers that grip and transport the test film.

Film supply cassette 18 and film winding cassette 19
An incubator 55 is disposed in the exposed part of the long test film 3, which holds the film inside and allows the film to pass through it one after another. A photometry section 57 is arranged to determine the optical density dpj due to the color reaction with the photoreceptor.

As described above, the long test film 3 is intermittently pulled out from the cold storage 50 by the rotation of the motor 53, and is intermittently fed to the left in the figure, and when the film 3 is fed, the top lid 55a of the incubator 55 It rises in the direction of arrow A.

When the long test film 3 is moved, the upper lid 55a descends in the direction of arrow B and pushes the long test film 3. Next, the shutter 54 that was blocking the nozzle insertion hole 55b of the upper lid 55a moves to the right in the figure, and then the nozzle 7 descends as shown in the figure and passes through the nozzle Jtlj manhole 55b onto the long test film 3. The liquid to be tested is spotted. Furthermore, the shutter 54 moves leftward to close the nozzle insertion hole 55b, preventing air from entering or leaving the incubator 55, and maintaining the inside of the incubator at a predetermined temperature (for example, 37° C.). The part of the film on which the liquid to be tested has been spotted and developed (the part shown with diagonal lines in FIG.
(minutes) is kept at constant temperature. After or during the incubation, the aFI light section 57 determines the optical density of the spotted portion of the long test film 3 to 71P. This concentration AI constant is determined by the light irradiation means 57
The film 3 is irradiated with light containing a pre-selected wavelength emitted from the film 3, and the light reflected from the film 3 is detected by the photodetector 5.
7b.

When the spotting, incubation, and measurement of one liquid to be tested are completed in this way, the next liquid to be tested can be spotted. The long test film 3 remains in the incubator even after the above-mentioned measurement is completed, so that the part of the film to be used for the next analysis is placed at the spotting position immediately before the spotting for the next analysis. will be transferred to.

By the way, in this biochemical analyzer, since the test liquid storage device 100 is equipped with a centrifugation means as described above, after centrifugation is completed, the test liquid (serum, plasma, etc.) obtained by centrifugation is ) can be directly aspirated from the centrifuge cup using the suction spotting means without transferring it to the sample cup. Therefore, when it is necessary to quickly perform centrifugation and supply the test liquid to the suction spotting means in an emergency, etc., the centrifugation cup containing the liquid before centrifugation should be placed in the centrifuge section. Once loaded, the necessary test liquid can be automatically supplied to the suction spotting means, greatly improving work efficiency. Next, with reference to FIG. 4, the drive system of the test liquid storage device 100 will be described.

A rotating shaft 10B is installed in the center of the disk-shaped support disk 105 that holds the centrifugal separation cup 103 in a direction perpendicular to the supporting disk.
A DCC brushless morph centrifugal separation motor 107 is attached to the motor 107 for centrifugal separation by rotating the support disk 105 at high speed via the rotating shaft. Further, the support disk 105 is fixed to the rotation shaft 106 with a screw (reverse screw) and is removable, and can be attached at a fixed position with respect to the rotation direction using a groove formed in the rotation shaft 106. There is. On the other hand, the sample cup 101
The sample cup support plate 108 that holds the sample cup outside the centrifugal part 104 has a first gear 109 on the outer peripheral surface of its lower end, and this first gear +09 has a second gear 110.
are meshing. A positioning motor 112, which is a pulse motor, is attached to a central shaft 111 fixed at the center of the second gear 110. The positioning motor 112 rotates the first gear 109, that is, the sample cup support plate 108, by a predetermined angle via the second gear 110 by rotating the central axis I11. In this example, the rotation transmission means of the sample disk section 102 is comprised of the first gear 109, the second gear 110, and the center axis 11-512. Note that since the upper positioning motor 112 is a pulse smoke motor, it is possible to stop the sample cup support plate 108 at a predetermined stop position, but if you want to increase the accuracy of the stop position, the sample cup support A position sensor 113 (in FIG. 4, it is arranged outside the first gear 109 as an example) is provided to detect the position of the plate 108, and by controlling this position sensor,
It is desirable to determine the stopping position of the sample cup support plate 108. By driving this positioning motor 112, each sample cup of the sample disk section is sequentially sent to the above-mentioned test liquid extraction position P (see FIG. 2).

Further, after the centrifugation is completed, the centrifugal section 104 also sequentially moves each centrifugal separation cup 103 to the test liquid extraction position P.
When moving to the take-out position, the driving force of the positioning motor 112 is transmitted to the rotating shaft 10G, and the supporting disk 105 is rotated by a predetermined angle ( Hereinafter, the operation of sequentially moving the centrifuge section, the sample disk section, and the test liquid extraction position P will be referred to as "feeding operation J".

That is, a flange-like connecting portion 106A is formed at the lower end of the rotating shaft 106, and the central shaft 11
1 also includes a connecting portion 114 that rotates integrally with the central axis ill.
are provided, and these connection parts 106A, 114
In between, there is an ON state in which the reconnection part is connected to transmit the rotational force of the positioning motor 112 to the rotating shaft 106;
A clutch 115 is provided that can take an OFF state in which the rotational force is not transmitted to the rotating shaft 10B. Note that this clutch may be formed using any known structure. As described above, in this embodiment, the positioning motor 112 moves the centrifugal section 104 together with the sample disk section 102.
A feeding operation is also carried out at . In addition, the connection part 11
A position sensor 116 is provided outside of the centrifugal separation cup 6 for controlling the stop position of the centrifugal separation cup during the feeding operation.

Next, the operation of the above-mentioned test liquid storage device 100 will be explained.

A centrifugal separation cup 103 containing whole blood etc. is located in the centrifugal section 10.
4, the clutch 115 is in an OFF state in which it does not connect with the connection part 114 of the sample disk part and the connection part 106A of the centrifugal part. 0
It is rotated at a high speed of about 0.000 rpm for a predetermined period of time to perform centrifugation. After the centrifugation is completed, the clutch 115 is switched to the ON state when taking out the liquid to be tested, such as serum, from the centrifugal separation cup 103. Further, the drive of the centrifugal motor 107 is stopped, and the positioning motor 112 is driven, and this positioning motor moves the support disk 105 of the centrifugal section at a predetermined speed of 20 to 50 rpa+ via the clutch 115 and the rotating shaft 106. It can be rotated by an angle. The centrifugal separation cup 103 from which the test liquid has been separated in this way is sequentially sent to the test liquid take-out position P, and the above-mentioned suction spotting means 5
The test liquid is aspirated. Note that when the centrifugal section 104 is rotated by the positioning motor 112 for the feeding operation as described above, the sample disk section 102 also rotates.

Furthermore, when taking out the test liquid from the sample cup lot containing the test liquid, the clutch 115 is turned OFF.
positioning motor +12 is driven. Therefore, only the sample cup support plate 108 of the sample disk portion 102 is rotated at a low speed by a predetermined angle, and the sample cups 101 are sequentially sent to the test liquid extraction position. The feeding operation by the positioning motor 112 is performed when sending the centrifugal separation cup 103 to the test liquid take-out position P, when sending the inner sample cup 101 to the take-out position, and when sending the outer sample cup 101 to the take-out position. Although the amount of one feeding differs depending on the case of feeding, this feeding amount is controlled by the computer 12 based on human input to the keyboard 14 shown in FIG.

In this way, in this test liquid storage device, it is possible to use a clutch to transmit the driving force of one positioning motor to both the centrifugal section and the sample disk section. In addition, only one positioning motor needs to be provided, and the entire drive system can be simplified.

Furthermore, the above-mentioned centrifugal separation motor and positioning motor can be integrated, and in this case, the entire apparatus will have one motor, thereby further simplifying the drive system. Next, an embodiment in which a centrifugal separation motor and a positioning motor are integrated will be described with reference to FIG. Incidentally, the same parts as those in the above-described embodiment are given the same numbers, and the explanation thereof will be omitted.

In the apparatus shown in FIG. 5, the motor 117 attached to the rotating shaft 106 of the centrifugal section 104 is a servo motor with an encoder, which provides high-speed drive for centrifugal separation and low-speed drive for a predetermined amount for feeding operation. It has become something that can be done together. In addition, the sample disk section 102
is a clutch 18 that connects the connecting portion 10[iA of the centrifugal section 104 and the connecting portion 114 of the sample disk section 102.
The driving force of the motor 117 is transmitted through the motor 117, thereby causing the rotation.

In this device, when centrifuging, the clutch 118 is turned off.
In the FF state, the motor 117 is driven at high speed, and only the centrifugal section 104 is rotated at high speed. Also, a centrifuge cup that has finished centrifugation! When taking out the liquid to be tested from 03, the motor 11 must be turned off while the clutch 11g is in the OFF state.
7 to low speed drive for feeding operation. In this way, while the sample disk unit 102 remains stopped, only the centrifugal unit is rotated at low speed by a predetermined angle, and the separated test liquid can be sequentially supplied to the suction spotting means 5. In addition, when taking out the test liquid from the sample cup 101 of the sample disk section 102, the clutch 11g is turned ON to connect the motor 117 and the sample disk section 102, and the motor 117 is driven at a low speed for feeding operation. If you do so, the sample disk section 102
can be rotated by a predetermined angle. In this case, the centrifugal section 104 also rotates together with the sample disk section 102.

In this embodiment, although the motor 117 is relatively expensive, it is sufficient to provide only one motor for the entire test liquid storage device, so the device can be further miniaturized.

(Effects of the Invention) As described in detail above, according to the test liquid storage device of the present invention, by providing the centrifugal part in the storage device, the test liquid obtained by centrifugation is directly transferred to the suction point. It can be supplied to pipe means, greatly improving work efficiency when urgent measurements are to be made.

In addition, in the apparatus of the present invention, the centrifugal section and the sample disk section share a positioning motor, so that the drive system thereof can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a biochemical analyzer equipped with a test liquid storage device according to an embodiment of the present invention, FIG. 2 is a plan view of essential parts of the biochemical analyzer, and FIG. FIG. 4 is a schematic diagram of the test liquid storage device, and FIG. 5 is a schematic diagram of a test liquid storage device according to another embodiment of the present invention. 1... Biochemical analyzer 3... Long test film 5... Suction point tube means 1
00...Test liquid storage device 101...Sample cup 102...Sample disk section 103...Cup for centrifugal separation 104...Centrifugal section 1
06... Rotating shaft 107... Centrifugal separation motor Ill... Center shaft +
12...Positioning motor 115.118...Clutch 117...Motor (Figure 1)

Claims (1)

[Scope of Claims] Used in a biochemical analyzer that suction-spots a test liquid onto a test subject and measures the components of the test liquid, the apparatus stores the test liquid and applies the suction-spot. A centrifugal section that integrally holds a plurality of centrifugation cups containing a liquid to be centrifuged arranged in an annular shape in a test liquid storage device for supplying the test liquid to the means; a plurality of samples containing the test liquid; a sample disk unit that integrally holds the cups in an annular arrangement concentric with the centrifugal separation cup on the outer periphery of the centrifugal part; connected to a rotating shaft installed perpendicularly to the centrifugal part in the center of the centrifugal part; a centrifugal separation motor that rotates the centrifugal section at high speed via the rotation shaft; or a positioning motor that rotationally moves the sample disk part in predetermined angle increments around the rotation axis to sequentially place the centrifugal separation cup or the sample cup at a suction position by the suction spotting means;
and a test liquid storage device comprising the positioning motor and a clutch connected to the other of the rotation shaft of the centrifugal section and the rotation transmission means of the sample disk section and capable of transmitting the driving force of the positioning motor to the other. .