JPS63134953A - Test piece for optical biochemical analysis - Google Patents

Abstract

PURPOSE:To prevent sticking of a specimen to an analyzer by housing test paper provided with a reaction part coated with a desired material and a reagent which makes color reaction and a gripping part into a case having a light transmissive part to expose the reaction part. CONSTITUTION:Part of a cover 4 on the rear face of the case 2 is stripped from a box body 3 and the test paper 1 is taken out. A user holds the gripping part 1b of the paper 1 and immerses said part into the specimen such as urine. Then, the reaction part 1a of the paper 1 forms a color at the concn. proportional to the concn. of the sugar-content contained in the specimen. The user houses the reaction part 1a of the paper 1 into the box body 3 and presses the peripheral face of the cover 4 to the box body 2 to house the paper into the case 2 by a pressure sensitive adhesive agent 5. The case 2 housing the paper 1 in the above-mentioned manner is set to a test piece stage 12 of the analyzer body 10 and a cap 11 is closed. The contact of the paper 1 with the stage 12 and the cap body 11 is obviated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a test piece suitable for an apparatus for optically analyzing a main sample.

(Prior art) For example, in the analysis of sugar contained in urine, a test piece coated with a reagent that reacts with sugar to develop color is used, and when urine is dropped onto this test piece, the degree of color development is detected using optical snowmaking. There is a problem in that undried urine adheres to the test piece mounting platform and contaminates the analysis bag.

(Purpose) The present invention has been made in view of these problems, and its purpose is to provide a novel optical biochemical analysis test that can prevent specimens from adhering to analysis equipment. The purpose is to provide a piece.

(Summary of the Invention) That is, the present invention is characterized by providing a test paper having a reaction part coated with a reagent that undergoes a color reaction with a target substance and a gripping part, and having a light-transmitting part that exposes the reaction part. The point is that it is housed in a case.

(Example) The details of the present invention will be described below based on illustrated examples.

Figures 1 (a) and 1 (b) each show an embodiment of the present invention, and reference numeral 1 in the figures is a test paper, in the center of which is a reagent that reacts with the detection substance to develop a color. A gripping portion 1b is formed by extending the negative end of the reaction portion 1a impregnated with the reaction portion 1a. 2 is a case for storing the test strip 1, in which a window 3a forming a transparent part is bored in a box 3 formed to match the shape of the main body of the test strip 1 at a place where it abuts the reaction section]a of the test strip. A recess 3b from which the gripping portion 1b can protrude is formed in one wall surface, and a cover 4 is provided on the opening side with a pressure-sensitive adhesive 5 so that it can be peeled off and reattached.

FIG. 2 shows an embodiment of an optical analyzer suitable for the above-mentioned test piece, in which a test piece mounting table 2 equipped with an openable and closable lid 11 is provided on the top surface of the main body 10. , here is the reaction part 1a of the test strip 1 when the test strip 1 is positioned.
A light-emitting element 13 and a light-receiving element 14 are arranged at a location facing the main body 10, and a display 15 for displaying the output from a signal processing circuit, which will be described later, and a calibration switch are provided on the surface of the main body 10.
6. A measurement switch 17 is provided.

FIG. 3 shows an embodiment of the signal processing circuit described above, and reference numeral 20 in the figure is a control snowmaking device consisting of a microcomputer, and when the calibration switch 16 is pressed down, the light from the standard sample is Intensity analog-to-digital converter 2
], adjusts the indicated value to the reference value, and when the measurement switch 17 is pressed, converts it to the concentration of the target component based on the light intensity from the test paper and outputs it to the display 15. is configured to do so.

In this embodiment, a part of the cover 4 on the back side of the case 2 is peeled off from the box body 3, the test strip 1 is hung, and the test strip 1 is held by the grip 1b and immersed in a sample such as urine. As a result, the reaction part of the test strip develops a color at a concentration proportional to the concentration of sugar contained in the sample. Reaction part 1 of this test paper 1
The cover 4 is housed in the at box body 3, the circumferential surface of the cover 4 is pressed against the box body 2, and the cover 4 is housed in the case 2 using a pressure sensitive adhesive 5.

The case 2 containing the test paper 1 in this manner is set on the test piece mounting table 12 of the analytical snowmaking main body 10, and the lid 1 is closed. Needless to say, one side of the test paper is isolated from the test piece mounting table 2 by the cover 4 that constitutes the case 2, and the other side is isolated by the thickness of the plate that constitutes the box body 3. Therefore, the test paper 1 does not come into contact with the sample mounting table 12 or the lid 1.

In this state, when the measurement switch 17 is pressed, the device operates and the light from the light emitting element 13 or the window 3a of the case 2 is activated.
The reaction area 1a of the test paper is irradiated through the test paper, and light proportional to the concentration enters the light receiving element 14 and is converted into an electrical signal.

This signal is converted into the concentration of the target substance by the signal processing circuit 20 and displayed on the display 15.

When the measurement is completed, even if the test piece is taken out from the test piece @ holder 12 by the gripping part 1b and discarded as it is, since there is very little exposed part, it is possible to prevent contamination of the external environment.

Although this embodiment has been explained by taking the measurement of urinary litter as an example, it is clear that the present invention can also be applied to measurements of other components by color reaction.

In addition, in this example, the light-transmitting part was formed by a window, but if the box or cover is formed of a transparent material, the window can be omitted. The reagent can be kept in a sealed state to prevent deterioration of the reagent.

(Effects) As explained above, according to the present invention, a test paper having a reaction part coated with a reagent that undergoes a color reaction with a target substance and a gripping part is placed in a case having a transparent part that exposes the reaction part. Since the test strip is housed in the test strip, it is possible not only to isolate the specimen attached to the test strip from the analysis device and prevent contamination, but also to protect the unused test strip from the external environment.

[Brief explanation of the drawing]

Figures 1(A) and 1(B) each show an embodiment of the present invention, with Figure 1(A) being a perspective exploded view showing the structure of the test piece, and Figure 1(B) showing the external appearance. 2 is a perspective view showing an embodiment of the optical analysis device, and FIG. 3 is a block diagram showing an embodiment of the signal processing circuit in the device shown in FIG. ]...Test paper ]a...Reaction part 1b...
・・Gripping part 2・・・Case 3・・・Box body
3a...Window 4...Cover 12.
...Sample mounting table Fig. 1 C) Fig. 2 U Fig. 3? θ

Claims (1)

[Claims] A test piece for optical biochemical analysis, comprising a test paper having a reaction part coated with a reagent that undergoes a color reaction with a target substance and a grip part, housed in a case having a light-transmitting part that exposes the reaction part.