JPH01239458A - Cold storage housing for biochemical analysis apparatus - Google Patents

Abstract

PURPOSE:To enable the individual change of interior temp. and humidity conditions by constituting the cold storage housing for housing test films or slides for biochemical analysis of plural chambers which are made into a heat insulating structure in the outside wall parts and is internally segmented by partition walls having a high heat conduction effect and providing cooling means in at least one of the chambers. CONSTITUTION:A transparent cap 2 which has the heat insulating structure to cover the front face of the cold storage housing 6 is previously divided to correspond to the plural chambers segmented by the partition walls. Cooling means and dehumidifying means are provided in at least one of the plural chambers. The test film 31 hanging an unused film cassette 30 and used film cassette 40 is then housed into the prescribed chambers and is supported by a means 5 for spotting the liquid to be tested and is moved to a nozzle cleaning section 10 where the film is cleaned. The liquid to be tested in a means 4 for housing the liquid to be tested is thereafter sprayed to the film 31 from a spotting nozzle 7 mounted to a moving means 9 moving in a rail 8. This state is displayed on a CRT 15 via a circuit section 11 controlled by a computer 12 and is printed on a printer 16.

Description

[Detailed description of the invention] “Industrial application field” The present invention relates to a cold storage for a biochemical analyzer.

In detail, a cassette for storing a test film for biochemical analysis and/or a cartridge for storing a slide for biochemical analysis is stored, and the cooling condition is changed according to the characteristics of the test film or slide. This invention relates to a refrigerator for biochemical analyzers that has improved cooling efficiency.

[Prior art and its problems] In current medical care, biological body fluids (whole blood, plasma, serum, urine, saliva, etc.) are used for accurate diagnosis and appropriate treatment.
Is it a clinical chemistry test that performs quantitative analysis of various components contained in it? ■It is considered important.

For this purpose, it is necessary to quickly perform a large number of clinical chemical tests, and the above-mentioned 111 analysis can be easily performed at medical institutions, laboratories, etc. 7-, there is a need for an automatic and continuous method and apparatus.

For quantitative analysis, such as multilayer analytical test films using spectroscopic measurements,
A biochemical analysis method using an analytical test film or the like for measuring IT using an ion-selective electrode has been proposed, and has been put into practical use in some cases.

1. IIT analysis using a multilayer analysis test film (hereinafter sometimes referred to as ``colorimetric analysis test film'') involves spotting a small amount of the test liquid on the colorimetric analysis test film. The target component is kept at a constant temperature for a predetermined period of time (incubation period 1), and the target component in the test solution is subjected to a color reaction with the reagent in the colorimetric test film.The target component is quantified by spectrophotometrically measuring the color density. It is something to analyze.

In addition, in quantitative analysis using an analytical test film using an ion-selective electrode, a test liquid and a reference liquid are applied to each of the ion-selective layers of a sheet-shaped ion-selective electrode that are electrically separated from each other. The ionic activity of the test liquid is measured by measuring the potential difference between ion selective electrodes while the liquids are electrically connected to each other.

In order to automatically and continuously perform analysis using these test films for biochemical analysis, it is convenient to use these test films for biochemical analysis or continuous long films. be. It is conceivable that such a long test film for biochemical analysis is stored in a cassette case and loaded into a biochemical analyzer.

Furthermore, biochemical analysis slides incorporating multilayer analysis elements and ion-selective electrodes as described above are also used. Generally, a large number of such slides are stored in a cartridge and loaded into a biochemical analyzer.

On the other hand, test films and slides for biochemical analysis are processed from the time they are manufactured until the time of use in order to not reduce the accuracy of analysis.
It is necessary to store it at a low temperature and low humidity, preferably at a temperature of 5° C. or lower and a humidity of 25% RH or lower. Therefore, it is necessary for a biochemical analyzer to be equipped with a refrigerator to store test film cassettes and slides for biochemical analysis at low temperature and low humidity. We have proposed a device (Japanese Patent Application No. 176563/1982).

By the way, some test films and slides for biochemical analysis are very sensitive to temperature and humidity, while others are relatively unaffected by temperature and humidity. Although it is necessary to maintain low humidity, the latter does not need to be so low temperature and humidity. in general,
The cooler of the analyzer stores multiple test film cassettes and slide cartridges for biochemical analysis, and these cartridges have various characteristics. If the temperature is adjusted to something that is extremely sensitive to temperature and humidity, the temperature and humidity will be lower than necessary for something that is relatively unaffected by temperature and humidity. As a result, the cooling and dehumidifying capacity of the cold storage must be increased more than necessary, resulting in a decrease in cold storage efficiency.

[Object of the Invention] An object of the present invention is to provide a simple method for accommodating cassettes for storing test films for biochemical analysis with various characteristics and/or cartridges for storing slides for biochemical analysis in a simple manner. An object of the present invention is to provide a cold storage for a biochemical analyzer in which the temperature and humidity conditions in each room are changed according to the characteristics of slides, and the cooling efficiency is improved overall.

[Summary of the Invention] The present invention provides a refrigerated box for a biochemical analyzer that accommodates a plurality of cassettes for storing test films for biochemical analysis and/or cartridges for storing slides for biochemical analysis, the outer wall being heat-insulated. A biochemical analyzer characterized in that it has a structure that is partitioned into two or more chambers by a partition wall with an excellent heat transfer effect, and that at least one chamber is provided with a cooling stage. It's in the cold storage.

A preferred embodiment of the present invention resides in the above-mentioned cold storage for a biochemical analyzer, characterized in that a lid having a heat-insulating structure is provided on the top surface of the cold storage.

A preferred embodiment of the invention provides that the number of lids is at least 11
1. The above-mentioned cold storage for a biochemical analyzer is characterized in that it is divided corresponding to each chamber.

In a preferred embodiment of the present invention, the cold storage is divided by the partition wall into a chamber cooled by - cooling means and one or two chambers cooled from this chamber via the partition wall. The cold storage for biochemical analyzers described in - is characterized by being partitioned.

[Detailed description of the invention] The invention will now be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an example of a biochemical analyzer using colorimetric analysis, which includes a cold storage for a biochemical analyzer according to the present invention.

The illustrated biochemical analyzer 1 is equipped with a transparent lid 2, and by opening this lid 42, the test liquid described below, a long test film 31 in the form of a long tape, etc. are placed inside the device 1. It is designed to be opened and removed. This device 1 is equipped with a test liquid storage means 4 that stores test liquids such as serum and urine in a circular arrangement. It is taken out and spotted by the spotting means 5. The long test film 31 is made of multiple types of long films corresponding to the measurement items, such as containing a reagent that exhibits a color reaction with only the specific chemical component or tangible component to be measured in the test liquid. A test film 31 is prepared. The unused portion of the long test film 31 is wound inside the unused film cassette 30, and the portion used for the above measurement is wound inside the used film cassette 40. Also, in the center of the roll 41 in the used film cassette 40, a motor is used to rotate the long test film 31 for pulling out the film 31 from the unused film cassette 30 after storing it in the device 1, as will be described later. A hole 42 is provided for engaging the shaft. The long test film 31 is housed in the apparatus 1 while being wound around the cassette 30.4o. The unused film cassette 30 and the used film cassette 40 are separated as shown in this figure. In order to be able to measure a plurality of items at the same time using this device 1, the unused portions of a plurality of long test films 31 can be stored in parallel in the cold storage 6, which is a test film storage means. It is composed of

The L distribution spotting means 5 has a spotting nozzle 7 at its tip, and is moved by a moving means 9 placed on the rail 8 in the direction in which the rail 8 extends, and takes out the test liquid from the test liquid storage means 4. It is spotted onto a long test film 31 pulled out from inside the cold storage 6 as described later. Further, the moving means 9 is configured to move the spotting means 5 downward by 1", and the moving means 9 moves the spotting means 5 onto the rail 8.
When the spotting means is moved in the left-right direction extending in
It is then lowered during cleaning, which will be described later.

After the spotting nozzle 7 makes a spot on the test film, it is cleaned in a nozzle cleaning section 1o located between the cold storage 6 and the test liquid storage means 4, close to both, and then used for the next spotting. Reused.

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 111f surface 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 15 for displaying auxiliary information for instructions, measurement results, etc., a printer 16 for printing out measurement results, and a computer for giving various instructions to the device 1. A floppy disk device 17 is provided that accommodates a floppy disk for storing commands, measurement result data, and the like.

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

The cold storage 6 is configured such that the spotting positions 22 of all the test films pulled out from there are arranged in a straight line, and the nozzle cleaning section 10 and the inside of the test liquid storage means 4 are located on this straight line. The inspection target extraction positions 4b are arranged in such a manner that the inspection target extraction positions 4b are arranged.

The test liquid accommodating means 4 is configured to accommodate a plurality of test liquids in a substantially circularly arranged storage section 4a. In addition, this test liquid storage means 4 has a configuration in which a storage portion 4a arranged in a roughly circular shape is rotated.
Among the test liquids stored in the test liquid, the test liquid to be used for the next measurement is automatically rotated by a rotating means (not shown) so that the test liquid to be used for the next measurement is located at the take-out position 4b. In order to prevent deterioration due to evaporation of the test liquid stored in the storage part 4a, the extraction position 4 is
A straight plate (not shown) is placed over the accommodating portions 4a other than b.

The spotting means 5 is moved in the extending direction of the rail by the moving means 9 riding on the rail 8-J, takes out the liquid to be tested from the take-out position 4b, and spots it on the spotting position 22 on the long test film 31. .

FIG. 3 shows a main part of a cross section taken along the line XX" in FIG. 2. FIG.

The direct long test film 31 is connected to an unused test film cassette 30 and a used test film cassette 4.
0 and loaded into the device. The unused test film cassette 30 is stored in a cold storage 6 whose interior is temperature-controlled at, for example, 4° C., and the used film cassette 40 is stored in the winding chamber 18. If the unused portion of the long test film 31 is stored in the unused test film cassette 30 in this manner, the unused long test film 31 can be stored in the cold storage 6 without being touched. The cold storage box 6 (details will be described later) is surrounded by a cold storage wall using a heat insulating material.
A cooling and dehumidifying device 19 is attached to keep the inside at a predetermined low temperature and low humidity, and the air inside the cold storage 6 is circulated by a fan 20.

40 used film cassettes or 1 winding chamber as above.
8, this used film cassette 40
A rotating shaft of a winding motor 53, which is a conveying means for the long test film 31 provided in the winding chamber 18, is engaged with the hole 42 provided in the center of the inner roll 41. As the long test film 31 rotates, the long test film 31 is transferred from the unused test film cassette 30 to the drawer opening 60 of the cold storage 6.
8 and wound up into a used test film cassette 40.

By storing the used portion of the long test film 31 in the used film cassette 40 in this manner, the used film that has been spotted with the test liquid and soiled can be removed from the device 1 without touching it. They can be disposed of, etc. Regarding this disposal, instead of winding the used film into the used test film cassette 40, the used film cassette 40 is removed and the winding chamber 1
A box that can be attached to and removed from the device 1 for storing the film is provided in the section 8, and a cutter for cutting the used film is placed near the population of the winding chamber 18. Even if the used film stored in the box is stored in the box and the box can be taken out from the device 1 without touching the used film, the used film can be disposed of. good. In this case, the test film may be transported by providing transport rollers that grip and transport the test film.

An incubator 55 is disposed at the exposed portion of the long test film 31 between the unused film cassette 30 and the used film cassette 40, and this incubator 55 holds the film inside and sequentially passes the test film therein. A side light section 57 is disposed for measuring the optical density due to the color reaction between the long test film 31 and the test liquid.

The long test film 31 is intermittently pulled out from the cold storage 6 by the rotation of the motor 53, and is intermittently fed to the left in the figure. It rises in the - direction. When the long test film 31 is moved, the top 7i 55 a
descends in the direction of arrow B and pushes the long test film 31. 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 and covers the long test film 31-L through the nozzle insertion hole 55b. Test liquid is applied.

After that, 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 where the test liquid was spotted and developed (the part shown with diagonal lines in No. 3)
is kept at constant temperature in this incubator 55 for a predetermined period of time (for example, 4 minutes). After or during the incubation, the photometer 57 measures the optical density of the portion of the long test film 31 where the spotting has been performed. This concentration measurement is carried out by the light irradiation means 57a.
This is performed by irradiating the film 31 with light emitted from the film and including a preselected wavelength, and detecting the reflected light from the film 31 with the photodetector 57b.

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 31 remains in the incubator even after the above-mentioned measurement is completed, and the film portion 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.

FIG. 4 is a perspective view showing an example of a cold storage box for a biochemical analyzer according to the present invention, FIG. 5 is a sectional view taken along line A-A in FIG. 4, and FIG. 7 is an enlarged sectional view taken along line CC in FIG. 4, and FIG. 8 is a partial enlarged sectional view taken along line BB in FIG. 4.

In FIGS. 3 to 6, the cold storage 6 has a heat insulating structure on walls other than the top surface (front side wall 601, back side wall 602, right side wall 603, left side wall 604, and bottom wall 605), and the inside is partitioned. A wall 606 partitions the room into a chamber
and a lid 607Y. Lid 607X and Lid 6
07Y are designed to cover the entire upper surface of the cold storage box 6 together.

The heat insulating structure can employ a structure known per se, for example, a structure in which the entire body is made of a heat insulating material, a structure in which a double wall structure is formed and a cavity therein is filled with a heat insulating material, etc.

Room
It is designed to be directly cooled by Room Y is cooled by partition wall 606, which is cooled by the temperature of room X. Room
is suitable for accommodating test films or slides for biochemical analysis, which are relatively insensitive to temperature and humidity.

The partition wall 606 functions to exchange heat between the air in the room X and the air in the room Y, and is made of a material with high thermal conductivity, for example,
It is made of metal such as copper, aluminum, magnesium, or zinc and has a structure with a large heat transfer area, such as a fin structure or a corrugated plate structure. The material and structure of the partition wall are
They can be appropriately selected depending on the properties of the test films or slides to be accommodated in chambers X and Y, respectively.

Generally, it is desirable to provide the partition wall 606 so that the air in chamber It is also possible to increase the cooling rate of the chamber Y by providing the cooling speed of the chamber Y.

Since the cold storage 6 is configured as shown in -1-1, the chambers X and Y are each independently substantially airtight, so that when replacing the cassette or cartridge in the chamber Y , the temperature and humidity conditions in room X do not change.

In FIGS. 4 and 6, the lid 607x and the lid 607
Did you show an example where Y or one is provided for each chamber? Lid 607X
and 607Y may be further divided into two or more as necessary.

Moreover, one lid (not shown) may be further provided above the 1, /j 607

Furthermore, as shown in FIG. 7, the lid 607x and the lid 607Y can be opened and closed rotatably about the shaft 608, and the lid 607x and the lid 607Y can also be opened and closed using a hinge at the upper end of the side wall 602. It may be attached to
Further, the lid 607x and the lid 607Y may be opened and closed by sliding vertically in FIG. 5.

In the cold storage 6, the partition wall 606 may be used to partition two or more chambers into three or more chambers. In this case, a chamber Y cooled by the cold heat from the chamber X may be provided on both sides of the chamber X cooled by the cooling/dehumidifying device 19. Furthermore, the cooling and dehumidifying device can be configured to cool a number of chambers that are equal to or more than the total number but less than the total number of chambers.

Furthermore, the cooling/dehumidifying device 19 may not be provided in the cold storage 6 but may be provided in the biochemical analyzer 1, and the room to be cooled by the cooling/dehumidifying device of the cold storage 6 may be cooled by appropriate means.

One aspect of accommodating an unused film cassette 30 containing a test film for biochemical analysis in the cold storage 6 will be described in detail with reference to FIGS. 7 and 8. Inside the chamber X, a plurality of unused film cassettes 30 are housed in parallel in the left-right direction in FIG. 4 so that their planes are vertical and face each other.

Below is a perspective view of an example of an unused film cassette 30 in the margin 1.
It is shown in FIG. In FIG. 9, an unused film cassette 30 has a test film 31 inside a thick plate-shaped rectangular parallelepiped case having side surfaces 32 with an approximately square outer shape and a thickness slightly larger than the width of the test film 31. The test film 31 is stored in a rolled form, and an ejection opening 33 for the test film 31 protrudes from the case body.

A cassette case like the one described above can be made by a method known per se. For example, the case and lid of the cassette case are made separately, and after loading an unused test film, the case and lid are assembled. They may be fixed by fitting, engaging, screwing, adhering, or other means, or the case and the lid may be connected at one side of the lid, and the connecting portion may be formed into a hinge structure.

A reel (not shown) for winding the test film 31 in a roll inside the unused film cassette 30
Wrapping the test film 31 with a radius of curvature that is too small is undesirable as it may cause cracks in the test film 31, so the diameter should not be made too small.

Generally, it is preferred that the diameter is 40 to 80 mm. Moreover, the inside of the reel has a suitable locking part to prevent the test film from being taken out more than necessary.

Cassette cases and reels are generally made of various thermoplastic resins, such as polyolefin resins such as polyethylene and polypropylene, polystyrene, impact-resistant polystyrene, styrene-acrylonitrile resins, styrene resins such as ABS resins, vinyl chloride resins, and nylon resins. It can be easily manufactured from polyester, polycarbonate, polyacetal, and other resins using the technology used to manufacture audio and video cassette tapes.

An example of test film 31 is a colorimetric test film having a multilayer analytical element as shown in FIG. In FIG. 1O, the colorimetric test film 31 has a reagent layer 312 laminated on a light-transmitting support 311, and a developing layer 313 laminated thereon. In dry analysis, a liquid to be tested is spotted on the spreading layer 313, the liquid to be tested spreads in the spreading layer 313, and the component to be analyzed moves to the reagent layer 312 and reacts with the reagent contained in the reagent layer 312. The change in color density developed is measured by reflection photometry from the support 311 side, and the component to be analyzed in the test liquid is analyzed using the principle of colorimetry.

The colorimetric analysis slide test film 31 may further include a reflective layer, a light shielding layer, a regis- sion layer, a regis- sion
Other layers known in the art may be included, such as tration layers, water absorption layers, subbing layers, etc. Further, the developing layer and the reagent layer may be a single layer.

The structure of the multilayer analytical element as shown in FIG. 10 is known per se. For example, the support 311 is a film made of a material that is transparent to water and is impermeable to water. Examples of the substance include polyethylene terephthalate, polycarbonate of bisphenol
Examples include polymers such as polystyrene and cellulose esters (eg, cellulose diaditate, cellulose triacetate, cellulose acetate propionate, etc.). The thickness of the support 311 is about 50 μm to about 3 μm.
00 μm, especially in the range from 80 to 200 μm, and conveniently its width is in the range from approximately 3 to 10 mm. Further, its length can be appropriately determined depending on the number of analyzes per roll, and although the number is not particularly limited, it is generally convenient to have an analysis area for 100 to 600 times.

The spreading layer 313 spreads the liquid to be inspected that is spot-supplied on its surface at a rate of approximately constant amount per unit area in the lateral (horizontal) direction without substantially unevenly distributing the components contained therein. It has a spreading effect. The expansion layer 313 is
It is composed of paper such as filter paper, woven fabrics, non-woven fabrics, etc. made from natural IA, M, synthetic fibers, etc. Further, the spreading layer 313 may be made of a porous material made of particulate polymer.

The development layer 313 further contains various types of hydrophilic polymers such as cellulose derivatives, polyvinylpyrrolidone, polyvinyl alcohol, and polyacrylamide, nonionic, cationic, anionic, and amphoteric surfactants in order to control the development of the test liquid. It can be impregnated with a surfactant, an appropriate buffer for stable analysis, and the like.

Reagent layer 312 contains a suitable reagent capable of reacting with the analyte to produce a colorimetrically detectable change in color density. The reagent layer 312 is preferably one in which one or more reagents are dispersed in a hydrophilic colloid such as gelatin, gelatin derivative, polyvinyl alcohol, polyacrylamide, or polyvinylpyrrolidone that acts as a binder.

As another example of the test film in the present invention, a test film having an ion-selective electrode can also be used.

In FIGS. 7 and 8, the inner surface of the bottom wall 605 has grooves 609 into which a part of the bottom part when the cassettes 30 are placed vertically are fitted, corresponding to the number of cassettes 30 accommodated in the chamber X. It is provided. The width of groove 609 is preferably set to approximately approximate the thickness of cassette 30 so that cassette 30 does not move substantially laterally within groove 609. Groove 6
Preferably, the length of the groove 609 is approximately similar to the length of the side of the bottom portion of the cassette 30 so that the cassette 30 does not substantially move laterally within the groove 609. Usually 10 to 30 cassettes are accommodated in the chamber X, but this number is not particularly limited.

A support plate 611 is provided above the chamber X and has a through hole 610 that is large enough to allow the cassette 30 to pass in a direction parallel to the plane of the cassette 30 and supports the cassette on its side surface. It is preferable to provide the support plate 611 so that the inside of the chamber X communicates air with the outside substantially only through the through hole 610. The width and length of the through hole 610 are preferably set so that the cassette 30 does not substantially move laterally. The upper surface of the support plate 611 is preferably provided so as to match the upper end surface of the cassette 30 when the cassette 30 is fitted into the groove 609.

A lid 607
is provided. The lid 607X may be provided separately so as to cover each through hole 610, or may be provided for any number of through holes 610, for example, every two or three. In this case, the divided outer lids can be provided so as to be able to be opened and closed independently using @608 as a fulcrum. The outer lids are provided so that adjacent lids are in close contact with each other, and all of the outer lids are configured to cover the upper surface of the chamber X as a whole.

At the upper end of the front side wall 601 of the cold storage box 6, a hole 612 is provided into which the film outlet 33 of the cassette 30 is inserted. The test film 31 is taken out from the take-out port 33.

A cooling and dehumidifying device 19 is attached to the outside of the back side wall 602, so that the air inside the room X can be cooled and dehumidified. A space 613 is provided between the cassette 30 and the side wall 602 in the chamber X, and air can freely flow between the space 613 and the gaps 614 between each cassette. By providing a fan (not shown), it is possible to circulate the air in the room X and maintain all the cassettes at a uniformly low temperature and low humidity.

Since the cassette 30 is fitted into the groove 609 and the through hole 613 so that it does not move substantially, each gap 614 is almost independent, and if the lid 607x is provided separately for each cassette, -Even if you open the lid 607x,
Changes in the temperature and humidity of the internal air due to the outside air entering through the open portions have little effect on the cassettes in the open portions, making it possible to obtain highly accurate analytical results in a stable state.

Further, a cartridge containing an ion-selective electrode slide is housed in the chamber Y so that the slide can be taken out from the hole 615.

[Effects of the Invention] The cold storage for biochemical analysis equipment of the present invention can be used as a car set and/or for storing test films for biochemical analysis with various characteristics.
Or, since it does not contain cartridges for storing slides for biochemical analysis, it is possible to change the temperature and humidity conditions in each room according to the characteristics of the test film or slide in a simple manner, resulting in overall high cooling. This is a cold storage that has the remarkable effect of being efficient.

Furthermore, in the cold storage for a biochemical analyzer of the present invention, when replacing a cassette in which the test film for biochemical analysis in the cold storage has been consumed with a new test film cassette for biochemical analysis, the outside air is pumped into the cold storage. to prevent the other cassettes in the cold storage from coming into contact with a high temperature and high humidity atmosphere and deteriorating the performance of the test film, and to improve the cooling efficiency of the cold storage. This is a cold storage refrigerator that can produce remarkable effects that can improve

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a colorimetric biochemical analyzer having a cold storage for a biochemical analyzer according to the present invention, and FIG. 2 shows the main components of the biochemical analyzer 1 shown in FIG. FIG. 3 is a cross-sectional view taken along the line X-X' in FIG. Figure 5 is a sectional view taken along line A-A in Figure 4, Figure 6 is
4 is a sectional view taken along line B-B, FIG. 7 is an enlarged sectional view taken along line C-C in FIG. 4, FIG. 8 is a partially enlarged sectional view taken along line BB in FIG. 4, and FIG. , a perspective view of an example of an unused film cassette accommodated in a cold storage for a biochemical analyzer according to the present invention; FIG. 10 is a perspective view showing an example of a colorimetric test film. 1: Biochemical analyzer, 2: Transparent lid, 4: Test liquid storage means, 5: Test liquid spotting means, 6: Cold storage, 7: Spotting nozzle, 8: Rail,
9: Transportation means, IO: Nozzle cleaning section, 1: Circuit section, 12: Computer, 13: Operation/display section, 14: Keychain, 15: CRT display, 16: Printer, 17: Floppy disk device, 18: Winding Room, 19:
Cooling and dehumidifying device, 20: Fan, 22: Spotting position, 30: Unused film cassette, 31: Test film, 32: Side, 33: Output port, 311: Light-transparent support, 3I
2: reagent layer, 313: development layer, 40: used film cassette, 53: motor, 54: shutter, 55: incubator, 55a: upper lid, 55b: nozzle insertion hole, 57
: Photometry section, 57a: Light irradiation means, 57b/photodetector, 6
01: Front side wall, 602: Back side wall, 603: l
A side wall, 604: Left wall, 605: Bottom wall,
606: Partition wall, 607x, 607Y: Lid, 608: Shaft, 609: Groove, 610: Through hole, 611: Support plate, 612: Hole, 613 Space,
614: Gap. Patent applicant: Fuji Photo Film Co., Ltd. Agent
Patent Attorney Hata Yanagawa Diagram 1

Claims (1)

[Claims] 1. A cold storage for a biochemical analyzer that accommodates a plurality of cassettes for storing test films for biochemical analysis and/or cartridges for storing slides for biochemical analysis, the outer wall has a heat-insulating structure and the inside has a heat-conducting structure. A cold storage for a biochemical analyzer, characterized in that it is partitioned into two or more chambers by a highly effective partition wall, and at least one chamber is provided with a cooling means.