JPH0128458Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette tray, and particularly to a cassette tray used when setting samples in an automatic clinical chemistry analyzer.

As shown in Figs. 1 and 2, the clinical chemistry automatic analyzer is composed of an analysis section main body 1 and a control section 2. The control section 2 automatically analyzes the analysis values measured in the analysis section main body 1. It is processed in a specific manner.

The analysis section main body 1 is divided into a sampler 3 where samples are sampled, and an analysis section 4 consisting of a reaction chamber and a measurement chamber.
A sample cassette 6 supporting a plurality of sample cups 5 is sequentially moved to a sample suction position by a cassette feeding mechanism (not shown), and the sample (serum) in the sample cup 5 is transferred to a multipipette of a sample dispensing device 7. A plurality of reaction measuring tubes 1 are sucked up together with an appropriate first reagent 8 and supported in a reaction tube cassette 9.
Injected into 0.

The analysis section 4 is a constant temperature bath at about 37° C., and the sample injected into the reaction measuring tube 10 reaches a constant temperature while moving along a predetermined path. Along with this movement, the second and third reagents 11 are injected and stirred as necessary into each reaction measuring tube 10 supported by the reaction tube cassette 9, and the reaction tube cassette 9 arrives at a predetermined position. At this time, the reaction liquid in each reaction measuring tube 10 supported by the reaction tube cassette 9 is optically measured, and the reaction measuring tube 10 after the measurement is cleaned in the cleaning section 12 and sent to the next measurement. Note that the optical measurement is performed twice, once by the main detector 13 and once by the sub-detector 14, so that more accurate measured values can be obtained.

In such clinical chemistry automatic analyzers, the sampler requires a device for arranging and supporting a plurality of samples, and conventionally, a disk-shaped support device has been used. Two rows of holes are provided around the circumference of a horizontally held disk, into which sample cups can directly enter.While rotating this disk horizontally, the sample in the sample cup at a predetermined position is sucked up and dispensed into a reaction measuring tube. That's what I was supposed to do.

However, with such a support device, the number of samples relative to the area ratio is small, and not only can a large number of samples not be measured simultaneously, but the sample cup must be inserted directly into the disk, making its handling complicated. . Therefore, it was impossible to perform interrupt measurements in case of an emergency.

For this reason, in the past, a cassette tray system was used as a solution to the above-mentioned drawbacks. In this system, sample cassettes supporting a plurality of sample cups were arranged in a box-shaped cassette tray, and the sample cassettes were moved intermittently in the vertical and horizontal directions.

However, in the case of the conventional support structure using a cassette tray, the sample cassettes are placed directly on the bottom of the cassette tray, and each sample cassette is hung vertically on a plurality of claws that protrude from the bottom of the cassette tray. Since the sample cassette was moved, the sample cassette shook and the serum in the sample cup was likely to spill, and if serum spilled onto the device, it would coagulate, making maintenance of the device troublesome. In addition, in the conventional support structure, the sample cassettes are directly arranged on the cassette tray, so even when an emergency measurement is required, the work of removing the sample cassettes is complicated.

The present invention was developed based on the above viewpoints, and its purpose is to detachably mount each sample cassette on its respective stand, and arrange the sample cassettes integrated with the stand in a cassette tray. However, the above-mentioned drawbacks of the conventional method are solved by pressing the stand located at the last stage from the rear with respect to the direction of movement of the sample cassette, thereby sliding the sample cassette as a whole. It is. Hereinafter, the present invention will be described in detail based on the accompanying drawings.

In FIG. 3, the cassette tray 15 is formed into a rectangular box shape, and sample cassettes 6 placed on a stand 18 enter and exit from both front and rear ends of the right side wall 16, as shown in FIG. Rectangular notches 19 and 20 are formed for this purpose. Further, at the upper edges of the left and right side walls 16 and 17, there is a substantially semicircular notch 21 corresponding to the front and rear width of the sample cassette 6.
are provided, and furthermore, left and right side walls 16,1
A guide portion 22 serving as a guide for sliding the sample cassette 6 is provided on the inner surface of each of the sample cassettes 7 along the lower position of the semicircular cut portion 21 .
Near the abutment between the front wall 23 and the bottom wall 24 of the cassette tray 15 is a generally rectangular hole 2 in which a part of the vertical feeding mechanism (not shown) for the sample cassette 6 appears.
5,25 are drilled. Further, handle portions 27, 27 for carrying the cassette tray 15 are provided at the upper ends of the front wall 23 and the rear wall 26, respectively.
Incidentally, this cassette tray 15 is detachably attached to the sampler 3. In FIG. 4, the sample cassette 6 is formed into a substantially rectangular parallelepiped, and has the same length as the left-right width of the cassette tray 15. As shown in FIG. Furthermore, 11 rectangular holes 28 into which sample cups 5 are fitted are bored in the top surface so that up to 11 samples can be set at the same time. A stand 18 is formed to have the same length as the sample cassette 6 and is detachably fitted to the lower end of the sample cassette 6 to support the sample cassette. The upper part has a two-tiered structure, and a sample cassette 6 can be fitted into the upper part.
Further, a transparent hole 29 for code reading is provided at the upper end of the stand 18. Furthermore, as shown in FIG. 5, a hook hole 30 in the shape of two rectangular holes joined diagonally is provided at the bottom of the stand 18, corresponding to the position of the hole 28 in the sample cassette 6. Incidentally, this hook hole 30 is used as a locking portion when horizontally feeding the sample cassette.

Therefore, when arranging the sample cassettes 6 on the cassette tray 15, a sample (serum) is first collected in each sample cup 5, and then set in the sample cassette 6.

Next, the sample cassettes 6 are fitted into the stand 18 to form a double structure, and the sample cassettes 6 are sequentially arranged on the cassette tray 15, and the inside of the cassette tray 15 is filled with the sample cassettes 6. The cassette tray 15 with the sample cassettes 6 set in this way is pushed into the sampler 3 from the front and fitted into a predetermined position with one touch.

Note that the cassette tray 15 shown in FIG. 4 is a state diagram when it is set on the left side of the sampler 3, but when it is set on the right side of the sampler 3, the left and right and front and rear directions of the cassette tray 15 shown in FIG. 4 are reversed. and set it to sampler 3.

In this situation, turn on the analyzer switch.
First, the sample cassette 6 in the front row in the traveling direction is intermittently moved in the direction of the arrow from the notch 20 together with the stand 18 by a sample cassette traversing mechanism (not shown), and the sample cup 5 is sequentially moved to absorb the sample. Reach the top position. At this time, in conjunction with the movement of the sample cassette, the sample cassette 6 is also moved from the right cassette tray 15 in the direction of the arrow at the same speed. In this way, when the sample cassette 6 reaches the middle between the left and right cassette trays 15, the sample cassette vertical feed mechanism (not shown) is activated, and the feed arm is moved through the hole 25 provided in the cassette tray 15. (not shown) enters and retracts into the cassette tray 15 and presses the last row of stands 18. At this time, the cassette tray 15
All the sample cassettes 6 in the sample cassette 6 slide forward together with the stand 18 by one cassette as a whole. Next, the lateral feed mechanism operates again, and the same operation as described above is repeated. Then, the sample cassette 6 located at the intermediate position between the left and right cassette trays is inserted into the cassette tray 15 on the other side through the notch 19.

If it is necessary to examine another specimen in an emergency, the appropriate sample cassette 6 can be removed from the stand 18 and the sample cassette 6 containing the emergency specimen can be inserted into the stand 18 at this location. Interrupt measurements can be made.

Since this invention is constructed as described above, it is possible to arrange many samples at the same time in relation to the area ratio of the sampler, and it is very effective in a clinical chemistry automatic analyzer that automatically performs tests.

In addition, the sample cassette and stand have a double structure, and the entire structure can be slid during movement, so the sample cassette can be moved smoothly, and it can be easily moved during emergency inspections. Remove it from the stand
Tests can be easily carried out with replacement, and only the required amount of sample cassettes can be placed on the stand.

Furthermore, since the cassette tray can be attached and removed from the front of the sampler, its handling is easy.

[Brief explanation of the drawing]

Figure 1 is a front view of the clinical chemistry automatic analyzer, Figure 2
The figure is an explanatory view showing the main body of the analysis section of the device, Figure 3 is a perspective view of the cassette tray, Figure 4 is a perspective view showing sample cassettes arranged on the cassette tray, and Figure 5 is a bottom view of the stand. be. 3... Sampler, 5... Sample cup, 6...
...Sample cassette, 9...Reaction tube cassette, 1
0...Reaction measurement tube, 15...Cassette tray, 1
8...Stand, 19, 20...Notch, 25...
...Anabe.

Claims (1)

[Scope of utility model registration request] The sample cup 5 is formed into a box shape, with rectangular cutouts 19 and 20 formed at both the front and rear ends of one side wall, and a hole 25 formed near the abutment between the front wall 23 and the bottom wall 24. A plurality of sample cassettes 6 are supported in a row, and a stand 18 that removably fits into the lower end of the sample cassette 6 to support the sample cassette 6 is connected to the stand 1.
A cassette tray is characterized in that a plurality of cassette trays are arranged and housed in a state where they are attached to a cassette tray, and the cassette tray is detachably attached to a sampler of an automatic analyzer.