JPH03120472A - Titration plate holding tray used for inspecting specimen, such as blood and serum - Google Patents

Abstract

PURPOSE:To make the automatic treatment of a titration plate during the inspection process of the plate while suppressing the evaporation of a specimen and reaction reagent by forming a fitting part which tightly fits to the upper surface side of another plate holding tray on the bottom side of a plate holding tray. CONSTITUTION:The plate holding tray B of the titration plate 1 is formed of a synthetic resin or metallic material of larger and approximately square base plate-shaped main body 2 slightly thicker than the titration plate 1 of a standard size. A fitting recess 20 to be fitted with the plate 1 is formed on the upper surface side of the main body 2 and a bulging part 22 which bulges to four sides is formed in the bottom of the main body 2. The fitting part W of the size t tightly fit the top end of the main body 2 is formed on the under surface side. The ordinary titration plate 1 of the standard size is, therefore, held in the plate holding tray B and is inspected together with the plate holding tray B by an inspecting device A, by which the automatic processing of the titration plate 1 is enabled while the ordinary titration plate 1 is used and while the evaporation of the specimen and reaction reagent dispensed into respective holes is suppressed without hindering the inspection process.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a titration plate for testing in which a large number of holes for dispensing a specimen are arranged in a row.
The present invention relates to a plate holding tray that holds a titration plate to assist in the transfer operation of the titration plate during the testing process of serum or the like.

Testing of specimens such as blood and serum is usually carried out using a large number of specimen dispensing holes formed of transparent synthetic resin arranged vertically and horizontally, as shown in Figure 1. As shown in FIG. 2, a titration plate 1, which is A reaction reagent is dispensed from each dispensing needle 11 of the dispensing head a into each hole lO... of the dispensing head a, and the reaction reagent is applied in advance to the inner wall surface of each hole 10...; Reaction reagent applied to the surface of reaction beads that have been placed in advance in each hole lO...
Alternatively, after dispensing the sample, react with the dispensed reaction reagent,
When the reaction process is completed, the reaction results are inspected using an optical inspection device such as a photometer. In this case, the titration plate 1 is again set below the dispensing head a of the dispensing device, and the cleaning liquid is dispensed from the dispensing needles 11... and each of the above-mentioned dispensing liquids are dispensed into the dispensing head a. The inner wall surface of the hole 10 or the reaction beads are cleaned by suctioning with each suction needle provided in parallel with the needle 11, and then subjected to an optical inspection device.

By the way, in this test, depending on the type of test,
When reacting a sample and a reaction reagent, -a certain period of time (usually
It may be necessary to maintain the temperature at a constant temperature for about 1 hour). In this case, the sample is dispensed into each hole 10 of the titration plate l on which the reaction reagent has been applied or dispensed in advance (the sample is dispensed into each hole 10... in advance, After the titration plate 1 is placed in a constant temperature bath and subjected to constant temperature treatment, it is necessary to prevent the evaporation of the sample and reaction reagent. There's a problem.

For this purpose, by polymerizing the titration plate 1, the openings of the many holes 10 arranged on the top side of the lower titration plate 1 are covered with the bottom surface of the upper titration plate 1. There is a method for sealing the titration plate 1, but when doing so, the problem arises that the titration plate 1 cannot be used in common with a normal titration plate 1 because it is made in a special shape. In addition, the body of the inspection device A is equipped with a supply hopper I which stores a large number of titration plates 1 and is equipped with a feeding mechanism that feeds out the titration plates 1 one by one, and a dispensing head a for sample reaction. A collection hopper d is provided to sequentially receive, collect and hold the titration plates 1 after dispensing reagents, etc. from the receiving port, and automatically process the supply of the titration plates 1 below the dispensing hair door a and their collection. In this case, there is a problem in that it is difficult to form the titration plate 1 so as to correspond to the engaging claw of the feeding mechanism and the engaging claw of the receiving mechanism.

The present invention was made to solve these problems, and the titration plate is formed into a normal shape.
We have developed a new method that enables automatic processing of titration plates during the testing process while suppressing evaporation of the sample and reaction reagent dispensed into each hole of the titration plate without interfering with the testing process. The purpose is to provide.

For this purpose, the present invention was completed based on knowledge obtained through various studies and experiments. That is, using a regular titration plate, during the test process,
In order to suppress evaporation of the sample and reaction reagent dispensed into each hole, a plate-like plate holding dish is formed, which has a fitting recess on the top surface into which a normal titration plate is completely fitted. If a titration plate is fitted and held in this plate, and a fitting part is formed on the bottom side of this plate holding plate to tightly fit on the top side of another plate holding plate, the titration plate can be attached to this plate. By supplying the specimens and reaction reagents to the testing device while being fitted and held in the holding dish, the specified specimens and reaction reagents can be dispensed without any hindrance, and by stacking them in this state, evaporation of the specimens and reaction reagents can be suppressed. If this plate holding plate is formed with an engaging part that engages with the engaging claws of the feeding mechanism and the receiving mechanism, automatic processing during the inspection process of the 1 titration plate can be performed without the engaging part. Having reached the point where it could be carried out using a regular standard type titration plate, we conducted an experiment using such a plate holder and found that the prescribed test process could be carried out without any trouble and that it could be carried out in a constant temperature chamber. This was achieved by suppressing evaporation during the reaction within the chamber, and also allowing automatic processing of the inspection process for one titration plate to be carried out smoothly using a standard titration plate.

By the way, this means for holding the titration plate in the plate holding dish is such that during the inspection process using the optical inspection device performed after the completion of the reaction, if an attempt is made to examine the titration plate with the titration plate held in the plate holding dish, The light transmittance is poor, and when the titration plate is removed from the plate holder for examination, there is a disadvantage that confusion occurs.

From this, it was found that the bottom wall of the fitting recess of the plate holder is shaped like a notched window hole, and the part corresponding to the part where the holes of the titration plate fitted into the fitting recess are aligned. When the plate holder was opened to the outside, it was possible to perform microscopy using a photometer in a state with good light transmission without causing any problems with the airtightness caused by stacking plate holders, and this method also caused no problems with optical inspection. It turns out that it is possible to prevent this from occurring.

In addition, when testing the above-mentioned specimen using a titration plate, when the specimen and reaction reagent are reacted, the titration plate is placed on a vibrating device in order to mix the specimen and reagent and make the reaction accurate. There are cases where it is necessary to vibrate, but in this case, if the plate holder is provided with a connecting part that engages the vibration operating part of the vibration device in the vibration direction, titration can be performed using this plate holder. Since the plate can be effectively vibrated, this means can also be effectively used for vibration during the reaction process.

In addition, the plate holder can be made of any material if a cutout window hole is provided in the bottom wall of the fitting recess into which the titration plate is fitted for microscopic examination using a photometer. By molding it from a metal material with good thermal conductivity, it can also be used as a heat medium to efficiently conduct heat to the titration plate when loaded into a constant temperature bath.

For these reasons, in the present invention, as a means to achieve the above-mentioned object, a substantially rectangular base plate made of a synthetic resin material or a metal material is made, which is somewhat larger and thicker than a titration plate of a normal standard size. A fitting recess into which a titration plate of normal standard size is fitted is formed on the upper surface of the main body, and a bulging part that bulges around the four circumferences is formed at the bottom of the main body. This invention proposes a plate holder for a titration plate used for specimen testing of blood, serum, etc., which has a fitting portion formed on the lower surface side of the plate and has a size that allows the upper end side of the main body to fit tightly.

Next, embodiments will be described in detail with reference to the drawings. In addition, 1 drawing code is
The same reference numerals shall be used for components having the same effect as those of the previous means.

FIG. 3 is a perspective view of the plate holder B according to the present invention, in which the chain line indicates the titration plate 1 held by the plate holder B.

The main body 2 of the plate holding dish B is made of a suitable material such as the synthetic resin material or metal material used to form the titration plate 1, and as shown in FIG. It is approximately square with four sides of length L, which is slightly longer than the length on the long axis side of the standard type titration plate l, and the thickness D of the standard type titration plate l is as shown in Fig. 5. It is molded into a slightly thicker platform shape.

A fitting recess 20 is formed on the upper surface side of the main body 2 to receive and hold the titration plate 1 by dropping the titration plate 1 therein. The portion is formed so as to be continuous with the fitting recess 20, into which a finger is inserted in order to grasp the titration plate 1 that has been dropped into the fitting recess 20 and held. be.

Further, the bottom of the main body 2 of the plate holding tray B is bulged in a hakama-like manner around all four sides, as shown in FIGS. 6 and 7. As shown in FIGS. 6 and 7, the lower edge of the hakama-shaped bulge portion 22 protrudes downward briefly at a position slightly outside the outer surface of the peripheral wall of the plate holding tray B. It is formed in a surrounding frame-shaped protruding wall 23, so that when the plate holding dishes B are stacked, the outer periphery of the upper end of the main body 2 of the lower plate holding dish B,
This enclosing frame-shaped protruding wall 23 is fitted to form a fitting part W that tightly covers the upper surface side of the plate holding tray B below it.

Further, the bottom wall of the fitting recess 20 into which the titration plate 1 of the plate holding dish B is fitted is formed with a large number of holes formed in the titration plate l when the titration plate 1 is fitted therein. Zone 2 where lO... are arranged vertically and horizontally
As shown in FIGS. 3 and 4, a corresponding portion is formed in a cutout window hole 24 that is completely transparent vertically, so that the fitting recess 20 of the plate holding tray B
A state in which the titration plate 1 is held in the plate holding tray B, where the reaction results on the sample and reaction reagent in each hole 10 of the titration plate 1 held in the plate B are examined using a photometer. In addition, the plate holder B is designed so that it can be used without reducing its translucency.The plate holder B also has markings on the four corners of the fitting recess 20 into which the titration plate 1 is dropped, as shown in FIG. As shown in FIG.
...is the format of each. This engagement hole 25...
- As shown in FIG. 9, the vibration operating part of the vibration device installed in the body 30 of the inspection device 1A is engaged with the plate holding plate B in the vibration direction, and the plate holding plate B is This vibrating device is used to vibrate the titration plate 1 held together with the plate holding plate B. Next, to explain this vibrating device, FIG. In the figure, 30 is a machine body, C is a supply hopper mounted on the machine body 30, a is a dispensing head,
d is a recovery hopper, 31 is a plate holding plate B that holds the titration plate 1 fed out from the outlet on the bottom surface of the supply hopper 〇, and is laterally moved below the recovery hopper d through the bottom surface of the 1-dispensing hesid a. 4 is a transfer conveyor for moving the plate holding tray B mounted on the upper surface of the guide rail 31 to a predetermined position along the guide rail 31; The plate holding tray B, which has been transferred to the lower part of the collection hopper d by the transfer conveyor 4, is placed in the machine body 30 and placed under the collection hopper d so as to be pushed up toward the receiving opening on the lower surface of the collection hopper d. The lifting platform 6 to be mounted is a vibration device built into the lifting platform 5.

The supply ° hopper 〇 has left and right side frames 70, 70 that can be freely rotated outwards around support shafts 71, 71 provided at the upper ends thereof, and is rotated by a motor Ml. The link rods 74, 74 connected to the crank wheel 73 that rotates around the moving shaft 72 are connected so that the lower end sides of the pair of opposing left and right side frames 70-70 expand or contract the opposing distance by the operation of the motor Ml. Set aside the side frame 70・
The machine frame 30a is a normal one having the same form as the supply hopper C of the previous titration plate, which has engaging claws 75, 75 at the lower end of the machine body 30, and is installed vertically on the rear side of the machine body 30.
It is mounted on the front of the machine, on the left and right sides.

In the supply hopper C, a large number of plate holding plates B are stacked with the titration plate 1 held therein.
When loaded, the lower surface of the hakama-shaped bulge 22 provided at the lower end of the lowest plate holding tray B becomes a locking portion, and the engaging claws provided at the lower ends of the left and right side frames 70, 70 By locking on 75-75.

The above-mentioned motor M is stored and held in the supply hopper C.
By the operation of l, the left and right side frames 70, 70 expand and contract once, and the lowest plate holding tray B is paid out to the upper surface of the guide rail 31 for lateral movement from the downwardly opened feeding lower. It works like this.

The dispensing head a is conventionally known and is provided vertically movably at the front side of the machine frame 30a, which is vertically provided on the rear side of the machine body 30, at an intermediate position between the left and right sides.

The collection hopper d has a pair of opposing locking claws 8 on both left and right sides of a receiving opening 81 at the lower end of a hopper main body 80 formed in a rectangular tube shape in which the plate holding trays B are stacked and stored.
2-82, and are attached so as to be rotatable left and right so that the opposing distance between them can be expanded and contracted, and the opposing distance between the locking claws 82 and 82 is normally the same as the above-mentioned hopper main body 8.
It has a normal form similar to the collection hopper of the previous titration plate, which is constructed by biasing the opposite side with springs 83, 83 so that the spacing is narrower than the receiving port 81 at the lower end of the 0.80. It is mounted on the front side of the machine frame 30a, which is vertically provided on the rear side of the machine body 30, at a position closer to the other side.

Then, the plate holding tray B, which has been transported below the receiving port 81 of the collection hopper d by the guide rail 31 for lateral movement and the transfer conveyor 4, is arranged below the collection hopper d and the machine By being pushed up by the operation of the lifting platform 5 provided at the plate holding tray B, the left and right locking claws 82 are activated by the spring 83 by the hakama-shaped bulge portion 22 at the lower end of the plate holding tray B.
・By rotating to the widening side against 83 and moving the lifting platform 5 upward, the bulging portion 22 crosses over the locking claws 82, 82.
The locking claws 82, 82 are restored by the springs 83, 83, and come to hold the lower end surface of the plate holding plate B, thereby acting to collect and hold the plate holding plate B.

As shown in Fig. 1θ, the guide rails 31 for lateral movement have an angular cross section and are arranged in pairs in the front and rear (left and right in Fig. 10) to support the plate holding tray B. They are arranged in parallel and fixedly mounted on the fuselage 30.

In addition, the transfer conveyor 4 is constructed by extending a linking rod 41 across a pair of parallel endless chains 40 and 40 surfaces that are stretched across the machine body 30 so as to face each other in the front and back (left and right in FIG. 1O). The rod 41 is provided with a feed pawl 42 that abuts against the plate holding tray B supported on the guide rail 31, and a desired sprocket shaft 43 of the endless chain 40 is provided.
is transmitted to the output shaft of the motor M3 provided in the machine body 30, and by controlling the drive of the motor M3, the endless chains 40 are rotated by a desired amount, and the plate holding tray B is moved by the feed pawl 42 to the guide rail. 31 to a desired position.

The elevating platform 5 has four guide columns 51 erected on an abutment 50 that is fixed to and supported by the body 30, and the platform is slidable up and down on these! 152 is supported, an eccentric cam 53 rotated by a motor M4 is abutted against the lower side of the stand @52, and a plate holding tray B supported on the guide rail 31 is placed on the upper side of the stand @52. Support plate 5 that supports the bottom surface
4, and by controlling the operation of the motor M4 to rotate the eccentric cam 53 by a desired angle, within the range of the vertical stroke set by the rotation of the eccentric cam 53. , the base plate 52 and the support plate 54 can move up and down by a desired amount.

And the vibration device! 16 is a guide rail 31 by effectively utilizing the support plate 54 that moves up and down the elevator platform 5.
and when the plate holding tray B holding the titration plate 1, which has been transferred from below the dispensing head a to the bottom of the collection hopper d by the transfer conveyor 4, is pushed into the collection hopper d by the lifting platform 5. In addition, the titration plate 1 is made to vibrate in the middle of the process.

That is, the support plate 54 has the springs 60...
The support plate 5 is supported in a swingable manner by
4 is formed into a vertical rotating shaft 62 that is rotated by a motor M5 assembled to the upper surface of the base plate 52 via an elastic member 61, and the upper end of the rotating shaft 62 is By rotatably connecting to the lower surface of the support plate 54 and attaching a balancer 63 eccentrically to the middle part of this rotating shaft 62, the support plate 54 is horizontally moved by rotation of the balancer 63, which is eccentric due to the operation of the motor M5. A vibrating device 6 is configured to vibrate the plate holding tray B supported on the upper surface of the support plate 54 by reciprocating in the same direction.

A support plate 54 serves as a vibration operating section of this vibration device 6.
The upper surface is fitted into the aforementioned engagement hole 25 provided on the bottom surface of the plate holding tray B as a retaining portion for integrally engaging it with the plate holding tray B in the vibration direction. The engaging pins 64 . . . are installed at positions corresponding to the engaging holes 25 .

The engagement bins 64 only need to form a connecting portion where the support plate 54 and the plate holding tray B supported on the upper surface of the support plate 54 engage in the vibration direction of the support plate 54. It may be formed in a protrusion shape that fits into a fitting part W for sealing during stacking formed by a frame-shaped protruding wall 23 on the bottom surface of the holding tray B. In this case, the plate The engagement holes 25 formed on the bottom surface of the holding tray B may be omitted.

In addition, if incubation is required for the reaction between the specimen and the reaction reagent during the testing process, the plate holding dish B may be formed into a predetermined shape using a metal material with good thermal conductivity rather than being molded from a synthetic resin material. It is effective to mold it into

The embodiment device constructed in this manner operates as follows.

When testing blood, serum, etc. using the titration plate 1, drop the titration plate 1 to be used into the fitting recess 20 of each plate holder B, and then place the titration plate 1 into the plate holder B. At this time, each plate holding tray B has a number 10 number 2 attached to an appropriate part of the outer peripheral wall.
6 is attached by pasting a sticker or writing,
Each titration plate 1 is managed using the ID number 26 attached to the plate holding dish B.

And 1. The plate holding trays B, in which the titration plate L is fitted and supported in the fitting recess 20, are stacked in that state and housed in the supply hopper 〇 of the inspection device A, and set in the inspection device A. Then, each titration plate is accommodated in the supply hopper C while being supported by the plate holding dish B, and the bulge 22 provided at the bottom of the plate holding dish B is connected to the feeding mechanism of the supply hopper C. Engagement claw 7
5.75 and the locking claw 82 of the receiving mechanism of the collection hopper d.
- By engaging with 82, the sheets are fed out one by one and are sequentially collected into the collection hopper = d, making it possible to perform automatic processing during the inspection process.

Further, the titration plate 1 supported by the plate holding tray B and fed out from the supply hopper 〇 is sent below the dispensing head a by the transfer conveyor 4.

When a sample or a reaction reagent is dispensed, sent below the collection hopper d, and pushed into the collection hopper d by the operation of the lifting platform 5, the engagement pin 64 on the upper surface of the support plate 54 engages the plate holding plate. When it engages with the retaining hole 25 of B, the platform of the lifting platform 5! 152 is stopped at the intermediate position, and the motor M5 is activated to vibrate the support plate 54, the titration plate l vibrates along with the plate holder B, and the sample in each hole 10 of the titration plate 1 is vibrated. The reaction between the sample and the reaction reagent is carried out under vibration.

In addition, when the reaction between the sample and the reaction reagent is carried out at a constant temperature, the sample or reaction reagent has been dispensed into each hole lO... of the titration plate 1 held in the plate holding dish B. By the way, by stacking each plate holding plate B, each titration plate L is sealed by fitting the fitting part W at the bottom of the upper plate holding plate B with the upper end of the main body 2 of the lower plate holding plate B. evaporation of the specimen and reaction reagents is prevented. At this time, a dummy lid is placed over the uppermost one of the stacked plate holding trays B.

When plate holding plates B... are stacked and placed in a constant temperature bath in this way, if plate holding plates B... are made of a metal material with good thermal conductivity, the heat conduction to one titration plate l will be Become good.

Further, the titration plate 1 after the reaction between the sample and the reaction reagent in each hole 1O is subjected to an optical inspection device such as a photometer while being supported on the plate holding tray B. At this time, the cutout window hole 24 provided in the bottom wall of the plate holding tray B
However, the translucency of the titration plate 1 is maintained well.

As explained above, the plate holder B of the titration plate 1 used for sample testing of blood, serum, etc. according to the present invention is made of a synthetic resin material or a metal material, and is somewhat larger than the titration plate 1 of normal standard dimensions. A thick, substantially rectangular platform-like main body 2 is formed, and a fitting recess 20 into which the titration plate 1 of a normal standard size is fitted is formed on the upper surface side of the main body 2, and a fitting recess 20 is formed on the bottom of the main body 2 around the four circumferences. Since the bulging part 22 is formed to bulge out, and the fitting part W is formed on the lower surface side of the main body 2 with a size that tightly fits the upper end side of the main body 2, this plate holding plate is In B, a regular titration plate l with standard dimensions.
Hold it and test the entire plate tray B! ! By applying it to A.

Using a regular titration plate, automatic processing during the testing process of one titration plate can be performed without interfering with the testing process, while suppressing evaporation of the sample and reaction reagent dispensed into each hole of the titration plate. Become so.

In addition, by opening a notch window hole 24 corresponding to the zone 2 in which the holes 10 of the titration plate 1 are aligned in the bottom wall of the fitting recess 20 into which the titration plate 1 is fitted, the titration plate 1 can be fitted. Precise results can be obtained even if the plate 1 is subjected to an optical inspection device while it is supported on the plate holder B.

In addition, by providing the main body 2 of the plate holding plate B with a connection part that engages with the vibration operating part of the vibration device 6 in the vibration direction, the vibration of the titration plate 1 can be transmitted to the plate holding plate B. This can be done using the plate holding tray B while the plate is still supported.

In addition, by forming the main body 2 of the plate holder B from a metal material with good thermal conductivity, incubation can be performed accurately in a constant temperature bath. By assigning the ID number of the titration plate 1 to the ID number of the titration plate 1, the ID number of the titration plate 1 can be appropriately managed.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional titration plate, Fig. 2 is a perspective view of an inspection device equipped with a dispensing device, Fig. 3 is a perspective view of a plate holding dish according to the present invention, and Fig. 4 is a plan view of the same. , 5th
The figure is a sectional view taken along the line I--I in FIG. 4 of the same above, FIG. 6 is a sectional view taken along the Figure 8 is a bottom view of the same as above.
FIG. 9 is a partially cutaway front view of the main part of the inspection device in which the above plate holding tray is set, and FIG. 1θ is a side view of the lifting platform same as the above. Explanation of drawing symbols A... Inspection device a... Dispensing head C... Supply hopper W... Fitting parts Ml, M3, M4 L, D... Length 10... Hole 2. ... Main body 21 ... Recessed part 23 ... Projection wall 25 ... Engagement hole 250 ... Opening 30a ... Machine frame 4 ... Transfer conveyor 41 ... Connecting rod B ... Plate Holding plate b...Placement table d...Collection hopper 2...Zone/M5...Motor...Titration plate 11...Dispensing needle 20...Fitting recess 22...Swelling Exit part 24... Notch window hole 26... 10 number 30... Body 31... Guide rail 40... Endless chain 42... Feed pawl 43... Sprocket shaft 5... Lifting platform 51-... Guide column 53... Eccentric cam 6... Vibration device 61... Elastic material 63... Balancer 70... Side frame 72... Rotating shaft 74... Link rod 76... ...Feeding port 81...Intake port 83...Spring 50...Abutment 52...Base board 54...Support plate 60...Spring 62...Rotating shaft 64...Maintaining Pin 71... Support shaft 73... Crank wheel 75... Engaging claw 80... Hopper body 82... Locking claw whistle 4 Figure 8 Figure 10 Figure 0 3

Claims (5)

[Claims] (1) A substantially rectangular platform-shaped main body 2 is formed from a synthetic resin material or a metal material, which is somewhat larger and somewhat thicker than the titration plate 1 of normal standard dimensions, and the upper surface side of the main body 2 is provided with a normal titration plate 1. A fitting recess 20 into which the titration plate 1 of standard dimensions is fitted is formed, a bulging part 22 that bulges around the four circumferences is formed at the bottom of the main body 2, and the upper end side of the main body 2 is formed on the bottom side of the main body 2. A plate holding dish for a titration plate used for specimen testing of blood, serum, etc., which is formed with a fitting portion w that is sized to fit tightly. (2) In a zone z where the holes 10 of the titration plate 1 fitted into the fitting recess 20 are aligned with the bottom wall of the fitting recess 20 provided on the upper surface side of the main body 2. A claim (
1) A plate holding dish for a titration plate used for sample testing of blood, serum, etc. as described above. (3) A plate holder for a titration plate used for specimen testing of blood, serum, etc. according to claim (1), wherein a connecting portion for engaging with a vibration operating portion of the vibrating device 6 is formed on the lower surface side of the main body 2. (4) A plate holder for a titration plate used for testing specimens such as blood and serum according to claim 1, wherein the main body 2 is made of a metal material with good thermal conductivity. (5) A plate holder for a titration plate used for specimen testing of blood, serum, etc. according to claim (1), wherein IDNO is attached to an appropriate location on the outer peripheral surface of the main body 2.