JPH0238861A - Test device - Google Patents

Abstract

PURPOSE:To implement accurate inspection with the elution of a reagent and the peeling of a test piece suppressed substantially by forming an inlet/outlet for a sample on a cover member to prevent a sample with a flow velocity from impacting the test piece directly. CONSTITUTION:A cover member 10 is formed so as to cover a perimeter and an upper portion of a text piece 4 on a support 3 and an inlet/outlet 12 is formed at a proper location in the perimeter and on the top thereof to let a sample such as urine come in or out. The inlet/outlet 12 prevents urine from impacting the test piece 4 when injected to the member 10 with a significant flow velocity, for example, by discharging urine. On the other hand, the inlet/ outlet is set in quantity and size beforehand to secure an outflow of the sample necessary for inspection. Thus, a sample flows in by an amount necessary for inspection to reach the test piece 4 and a required amount of reagent is caused to react with the sample, thereby enabling the maintaining of the accuracy of the inspection. The member 10 should be transparent in view of the fact that judgement is often made by a change in color of the piece 4.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to the improvement of test tools used in various tests and analyzes typified by, for example, urine tests and water quality tests.

<Prior art> In testing urine or water quality, test pieces impregnated with various reagents corresponding to the test object are usually pasted onto a flat support using double-sided tape, for example. Therefore, a test device with a structure similar to that of the test layer is used.

For example, in the case of a test device for urinalysis, by urinating directly onto the test piece directly above the test piece, the reagent impregnated in the test piece is allowed to react with the urine, and for example, the color change state at that time is It is used to obtain test results from.

In this case, if the amount of urine is large, the reagent impregnated in the test piece may be eluted from the test piece, and depending on the strength of the urine, the kinetic energy may cause the test piece to peel off from the support. Sometimes.

In addition to the above method, there is also a test method in which urine is collected in a paper pot or the like, and a test device is immersed in the sample to cause the urine and reagent to react.

<Problems to be Solved by the Invention> However, when the former type of reagent elution phenomenon occurs, the test is performed using the amount of reagent that escaped elution.
This results in the inspection accuracy becoming unstable and inaccurate.

Moreover, for example, in the case of a multi-item test that determines the amount of protein, glucose, occult blood, etc. contained in urine in a single test, multiple test pieces impregnated with reagents corresponding to each test are used. When testing multiple items at the same time by urinating several times using a test device attached to a single support, the reagent eluted from one test piece may adhere to other test pieces along with the urine. Therefore, the desired reaction may not be obtained with this test piece.

Furthermore, when the latter phenomenon of peeling off of the reagent piece occurs, it becomes almost impossible to recover the peeled off test piece, making it impossible to perform the test itself.

Furthermore, in the case of using the paper tip, etc., it takes time and effort to prepare the paper tip, dispose of it after use, etc., and inspection becomes troublesome.

These problems are not limited to urine tests based on simply urinating, but also apply to, for example, water quality tests where running water is tested.Therefore, improvements have been desired.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a test device that allows accurate testing even when dealing with a large amount of specimen with a high flow rate. .

Configuration for Solving the Problems> Such objects are achieved by the present invention described below.
That is, the present invention is a test device consisting of a test device main body in which the test 1 is formed on a plate-shaped support, and a colorless and transparent cover member attached to cover the test layer,
This test device has an opening formed in the cover member through which a specimen enters and exits.

The present invention also provides a test device main body having a plurality of types of test layers formed on a plate-like support, and a plurality of colorless and transparent cover members attached to cover each of the plurality of types of test layers. The test device is comprised of a test device in which each of the cover members has an entrance/exit through which a specimen can enter and exit.

Function> The test device of the present invention having such a configuration covers the surrounding area and the upper part of the test piece with a cover member, so that the sample accompanied by the flow rate does not directly collide with the test piece, so that the elution of the reagent and the test Peeling of pieces is suppressed.

<Example> Hereinafter, the test device of the present invention will be described in detail based on preferred examples shown in the accompanying drawings.

FIG. 1 is a schematic perspective view showing an embodiment of the test device according to the present invention, and FIG. 2 is a side sectional view of the test device shown in FIG.

As shown in FIG. 1, the test device 1 of the present invention is composed of a test device main body 2 and a cover member 10. As shown in FIG.

In this case, the test device main body 2 has an elongated flat support 3, and a rectangular test piece 4, for example, is attached to one side of the support 3 near the tip (the left side in the figure) with double-sided adhesive tape 5. It has a pasted structure.

This support 3 is made of, for example, polystyrene, polyester,
It is composed of plastic materials such as polyvinyl chloride and polycarbonate, materials such as paper, or materials on which a thin layer of metal such as aluminum is vapor-deposited, but considering the conditions of use,
It is preferable that the material has water resistance.

Further, the test piece 4 is specifically configured as a test paper in which a required amount of reagent corresponding to the purpose of the test is eroded (supported) in a medium made of paper, cloth, or other fibers. In the case of test tools for urine tests, the type of reagent that is impregnated varies depending on the test item. For example, in a urine glucose test using the glucose oxidase method, anionic surfactants are used as color stabilizers in addition to enzymes such as glucose oxidase and peroxidase and chromogens, and buffers are used in urine protein tests. and pH
An indicator (such as tetrabromophenol blue) is used.

In this example, the test layer is formed by adhering the test piece 4 to the support 3; however, the test layer is not limited to this, and for example, a liquid containing a reagent may be applied to a part of the support 3,
It can be formed by drying, or by other methods.

The cover member 10, which is a feature of the present invention, is made of a colorless and transparent material, preferably water resistant.

This cover member IO is attached to a support body 3 as shown in FIG.
For example, the test piece 4 is configured as a box-shaped member having an opening 10a on the lower side.

Then, on both sides of the lower side, sections 11.11 for attaching to the support body 2 are formed protrudingly, and by applying an appropriate adhesive here, this attachment can be done at sections 11.11. 10 is adhered or fused to the support 2 with an adhesive (thermal fusion, ultrasonic fusion, etc.).

In addition, sample inlets and outlets 12 through which a sample such as urine or sewage can enter and exit are formed at appropriate locations on the circumferential surface and top surface of the box-shaped cover member 10.

This specimen inlet/outlet 12 prevents the urine from directly hitting the test piece 4 when a specimen with a considerable flow rate is poured onto the cover member 10, for example in a urine test. On the other hand, the quantity and size shall be set in advance to ensure the inflow of the specimen necessary for the reaction (test).

Note that the reason why the cover member 10 is colorless and transparent is to ensure visibility even when the cover member 10 is attached, since inspection of a specimen is often determined based on a color change of the test piece 4.

Examples of the constituent material of the cover member 10 include resins such as polyethylene, polypropylene, polycarbonate, and polyester.

The test device 1 having such a structure is tested by, for example, urinating while holding the right side portion in FIG. 2 appropriately.

In this case, most of the urinated urine is absorbed by this cover member 1.
0 and flows away without contacting the test piece 4, and only the amount of sample necessary for the test flows into the cover member 10 from the sample inlet/outlet 12 and reaches the test piece 4. Therefore, the required amount of reagent impregnated into the test strip 4 and the specimen react as planned, making it possible to maintain the accuracy of the test.

Note that the test device 1, with the cover member 10 still attached, can also be used for testing by being immersed in a paper cup or the like, for example.

FIG. 4 shows another example of the structure of the cover member.

This cover member 15 is composed of a curved protrusion 17 located at the center and mounting sections 16.16 at both ends thereof. Then, as shown in the figure, the cover member 15 is fixed onto the support 3 so that the protrusion 17 covers the upper part of the test piece 4.

Incidentally, the attachment to the support body 3 is carried out in the same manner as described above at steps 16 and 16.

In addition, arcuate openings 15 are provided on the sides of the protrusion 17, respectively.
a, 15a is formed, and this frontage 15a serves as an entrance/exit for the specimen.

What is shown in FIG. 5 is an example in which a plurality of test pieces are arranged in parallel on a common support, and shows, for example, a test device 21 used for multi-item testing.

In this case, a plurality of test pieces 24a, 24b, and 24c, each impregnated with a different reagent depending on the test item, are attached to the test device main body 22 along the longitudinal direction of the support 23. , Moreover, each of the test pieces 24a to 24c includes
The cover member 10 or 15 shown in FIG. 3 or 4 is respectively attached in the same manner as described above.

Test device 21 equipped with the plurality of test pieces 24a to 24c
For example, a multi-item test can be carried out by urinating at a certain temperature, and since each test piece is covered with a separate cover member, even if the drug in the test piece does not dissolve, However, because of the cover member, it is difficult for the drug to flow out, and even if it does flow out, it is rare for it to enter another cover member again, so that it can be tested without affecting other drugs.

In this case, when using the box-shaped cover member 10, the size of the sample entrance/exit 12 formed in each cover member 10 is changed according to the position of each test piece 4, so that each test piece It is also possible to adjust the amount of specimen flowing into 248 to 24c (preferably, approximately the same amount of specimen flows into all of them).

Moreover, instead of these test pieces 24a to 24c, a plurality of test pieces of the same type each impregnated with the same reagent may be used.

Although several embodiments have been described above, the present invention is not limited thereto, and can be modified in various ways without changing the gist thereof.

For example, there is a case where the planar shape of the test layer is made into a shape other than a rectangle, and the shape of the cover member is made to match that shape.

<Effects of the Invention> According to the test device of the present invention, by installing the cover member having an inlet/outlet for the specimen, even when a large amount of specimen with a high flow rate is targeted, it is possible to prevent leakage from the test layer. There is no elution of reagents or loss (peeling) of the test layer, so accurate testing can be performed.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an embodiment of the test device according to the present invention. FIG. 2 is a cross-sectional side view of the test device main body in FIG. 1. FIG. 3 is an enlarged perspective view of the cover member. FIG. 4 is a perspective view showing another example of the structure of the cover member. FIG. 5 is a schematic perspective view showing another embodiment of the test device according to the present invention. Explanation of symbols 1.21...Test device, 2.22...Test device body, 3.23...Support, 4...Test piece, 5...Double-sided adhesive tape, 10.15. ...Cover member, 1.Oa...Opening, 11.16...Mounting allowance, 12...Sample entrance/exit, 15a...Opening. 17... Protrusion portion, 24a, 24b, 24c... Test piece FIG. FIG, 2 FIG, 4 FIG, 5

Claims (2)

[Claims] (1) A test device consisting of a test device main body having a test layer formed on a plate-like support, and a colorless and transparent cover member attached to cover the test layer, the cover member A test device characterized by forming an entrance/exit through which a specimen can enter and exit. (2) A test device body consisting of a plate-shaped support and a plurality of test layers formed thereon, and a plurality of colorless and transparent cover members attached to cover each of the plurality of test layers. 1. A test device characterized in that each cover member is formed with an entrance/exit through which a specimen can enter and exit.