JP7701142B2 - Liquid sample inspection tool - Google Patents

Description

The present invention relates to a liquid sample testing device.

In recent years, liquid sample testing devices using immunochromatography have come into widespread use, particularly for testing infectious diseases that require rapid diagnosis. This type of liquid sample testing device consists of a test strip and an upper case and a lower case that house the test strip. By adding a liquid sample to the test strip through a drip hole provided in the upper case, the color indicating the test result can be visually confirmed through a judgment window provided next to the drip hole.

To quickly visually confirm the test results, it is necessary for the liquid sample added through the drip hole to spread quickly to the determination window. Therefore, a liquid sample testing tool has been devised in which a ridge is provided on the determination window side of the drip hole in the upper case, and the liquid sample spreads along the ridge to the determination window side (Patent Document 1).

Patent No. 4643415

However, in the conventional liquid sample testing device described above, the ridges allow the liquid sample to spread quickly towards the determination window. This causes the liquid sample to flow towards the determination window all at once. In other words, there is a problem in that the liquid sample cannot be spread evenly across the entire test strip. Furthermore, if the liquid sample cannot be spread evenly, the dried drug held in the test strip cannot be sufficiently dissolved, resulting in poor reaction efficiency of the immune reaction and poor color development indicating the test result.

The present invention was made in consideration of the above-mentioned circumstances, and its purpose is to provide a liquid sample testing device that can spread the liquid sample evenly over the entire test strip, improves the efficiency of the immune reaction, and improves the color development that indicates the test result.

To achieve the above-mentioned objective, the liquid sample testing device according to the present invention has the following features [1] to [9].

[1]
an upper case having a liquid sample dropping hole and a test result determination window arranged side by side;
a lower case assembled to the upper case;
a test strip accommodated between the upper case and the lower case,
The upper case is
a first protrusion protruding from an edge of the drip hole on the determination window side toward the lower case;
a second protrusion protruding from an edge of the drip hole on an opposite side to the determination window from the first protrusion toward the lower case,
the first and second protrusions are shaped so that a capillary force that occurs between the second protrusion and the liquid sample and that causes the second protrusion to pull the liquid sample is greater than a capillary force that occurs between the first protrusion and the liquid sample and causes the first protrusion to pull the liquid sample, so that at least a portion of the liquid sample dropped into the dropping hole is developed toward the second protrusion by the second protrusion, and then directed toward the first protrusion ;
The second protrusion is provided in a pillar shape,
a second protrusion row in which a plurality of the second protrusions are arranged at intervals from an edge of the drip hole toward a side opposite to the determination window along an arrangement direction of the determination window and the drip hole;
The second protrusion row is arranged in a direction other than the arrangement direction,
The first protrusion extends from an edge of the drip hole toward the determination window along the arrangement direction,
The first protrusions are arranged in a plurality of rows in a direction other than the arrangement direction,
The interval between the second projections is narrower than the interval between the first projections.
It is a liquid sample testing tool.
[2]
an upper case having a liquid sample dropping hole and a test result determination window arranged side by side;
a lower case assembled to the upper case;
a test strip accommodated between the upper case and the lower case,
The upper case is
a first protrusion protruding from an edge of the drip hole on the determination window side toward the lower case;
a second protrusion protruding from an edge of the drip hole on an opposite side to the determination window from the first protrusion toward the lower case,
the first and second protrusions are shaped so that a capillary force that occurs between the second protrusion and the liquid sample and that causes the second protrusion to pull the liquid sample is greater than a capillary force that occurs between the first protrusion and the liquid sample and causes the first protrusion to pull the liquid sample, so that at least a portion of the liquid sample dropped into the dropping hole is developed toward the second protrusion by the second protrusion, and then directed toward the first protrusion;
The first protrusion extends from an edge of the drip hole toward the determination window along an arrangement direction of the drip hole and the determination window,
The second protrusion extends from an edge of the drip hole toward a side opposite to the determination window along the arrangement direction,
The length of the second protrusion in the arrangement direction is longer than the length of the first protrusion in the arrangement direction.
It is a liquid sample testing tool.
[3]
In the liquid sample testing device according to [ 2 ],
The number of the second protrusions is greater than the number of the first protrusions.
It is a liquid sample testing tool.
[4]
In the liquid sample testing device according to [ 2 ] or [ 3 ],
The first protrusions and the second protrusions are each provided in a plurality of rows in a direction other than the arrangement direction,
The interval between the second projections is narrower than the interval between the first projections.
It is a liquid sample testing tool.
[5]
The liquid sample testing device according to any one of [1] to [ 4 ],
The test strip has a sample pad exposed from the drip hole, an adjusting pad arranged on the judgment window side of the sample pad with a gap provided, a conjugate pad arranged adjacent to the judgment window side of the adjusting pad, and a membrane arranged adjacent to the judgment window side of the conjugate pad and visible through the judgment window,
an end portion of the first protrusion on the side of the drip hole in the arrangement direction is positioned on the sample pad, and an end portion of the first protrusion on the side of the determination window in the arrangement direction is positioned on the adjusting pad;
It is a liquid sample testing tool.
[6]
The liquid sample testing device according to any one of [1] to [ 5 ],
The test strip has a sample pad exposed from the drip hole, an adjusting pad arranged on the judgment window side of the sample pad with a gap provided, a conjugate pad arranged adjacent to the judgment window side of the adjusting pad, and a membrane arranged adjacent to the judgment window side of the conjugate pad and visible through the judgment window,
The first protrusion is provided facing the gap and is not inserted into the gap.
It is a liquid sample testing tool.

According to the liquid sample testing tool of the configuration of [1] above, the first and second protrusions are shaped so that the capillary force generated between the second protrusion and the liquid sample is greater than the capillary force generated between the first protrusion and the liquid sample. This makes it possible to make the force with which the second protrusion pulls the liquid sample dropped on the test strip away from the judgment window stronger than the force with which the first protrusion pulls the liquid sample dropped on the test strip toward the judgment window. Therefore, the flow of the liquid sample in the test strip can be controlled so that the liquid sample dropped into the dropping hole is first advanced toward the opposite side to the judgment window and then spread toward the judgment window, and the liquid sample can be spread uniformly over the entire test strip. In addition, by spreading the liquid sample uniformly, the dried drug held in the test strip can be sufficiently dissolved to improve the efficiency of the immune reaction and improve the color development indicating the test result.

The liquid sample testing device with the configuration of [2] above makes it easy to provide the first and second protrusions.

According to the liquid sample testing device having the configuration of [3] above, the length of the second protrusion in the arrangement direction is longer than the length of the first protrusion in the arrangement direction. This makes it easy to make the force with which the second protrusion pulls the liquid sample dropped on the test strip away from the determination window stronger than the force with which the first protrusion pulls the liquid sample dropped on the test strip toward the determination window.

According to the liquid sample testing device having the configuration of [4] above, the number of second protrusions is greater than the number of first protrusions. This makes it easy to make the force with which the second protrusions pull the liquid sample dropped onto the test strip away from the determination window stronger than the force with which the first protrusions pull the liquid sample dropped onto the test strip toward the determination window.

According to the liquid sample testing device having the configuration of [5] above, the spacing between the multiple second protrusions in a direction other than the arrangement direction is narrower than the spacing between the multiple first protrusions. In other words, the capillary paths formed between the second protrusions are narrower than the capillary paths formed between the first protrusions. This makes it easy to make the capillary force generated between the second protrusions and the liquid sample greater than the capillary force generated between the first protrusions and the liquid sample.

According to the liquid sample testing device having the configuration of [6] above, a second protrusion row in which a plurality of second protrusions are arranged in the arrangement direction is provided in a direction other than the arrangement direction. This allows the second protrusions to be arranged in a pillar shape.

According to the liquid sample testing device having the configuration of [7] above, the spacing between the multiple second protrusions is narrower than the spacing between the multiple first protrusions. In other words, the capillary paths formed between the second protrusions are narrower than the capillary paths formed between the first protrusions. This makes it easy to make the capillary force generated between the second protrusions and the liquid sample greater than the capillary force generated between the first protrusions and the liquid sample.

According to the liquid sample testing tool of the configuration [8] above, the end of the first protrusions on the drip hole side in the arrangement direction is located on the sample pad, and the end of the first protrusions on the determination window side in the arrangement direction is located on the adjusting pad. This allows the liquid sample that has spread along the first protrusions to the end on the determination window side to soak into the adjusting pad.

According to the liquid sample testing device of the configuration [9] above, the first protrusion is provided facing the gap between the sample pad and the adjusting pad. This allows the liquid sample to flow along the first protrusion, overcome the gap, and spread to the adjusting pad.

As described above, the liquid sample testing device of the present invention allows the liquid sample to be spread evenly over the entire test strip. Furthermore, by spreading the liquid sample evenly, the dried drug held in the test strip can be sufficiently dissolved to improve the efficiency of the immune reaction and improve the color development that indicates the test result.

The present invention has been briefly described above. The details of the present invention will become clearer by reading the following description of the embodiment of the invention (hereinafter referred to as "embodiment") with reference to the attached drawings.

FIG. 1 is a perspective view of an upper case of a liquid sample testing device according to a first embodiment of the present invention. FIG. 2 is a perspective view of a lower case of the liquid sample testing device according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view of the liquid sample testing device according to the first embodiment of the present invention. FIG. 4 is an enlarged perspective view of a main portion of the upper case shown in FIG. FIG. 5 is a perspective view of an upper case of a liquid sample testing device according to a second embodiment of the present invention. FIG. 6 is an enlarged perspective view of a main portion of the upper case shown in FIG. FIG. 7 is a perspective view of an upper case of a liquid sample testing device according to a third embodiment of the present invention. FIG. 8 is an enlarged top view of a main portion of the upper case shown in FIG.

Specific embodiments of the present invention are described below with reference to the drawings.

First Embodiment
FIG. 1 shows a perspective view of an upper case 10 of a liquid sample testing device according to a first embodiment of the present invention. FIG. 2 shows a perspective view of a lower case 40 of the liquid sample testing device according to the first embodiment of the present invention. FIG. 3 shows a cross-sectional view of the liquid sample testing device according to the first embodiment, in particular a cross-sectional view of the upper case 10, the lower case 40, and the test strip 30. The liquid sample testing device according to the first embodiment comprises an upper case 10 in which a liquid sample drip hole 13 and a test result determination window 14 are arranged side by side, a lower case 40 assembled to the upper case 10, and a test strip 30 accommodated between the upper case 10 and the lower case 40. The liquid sample testing device is an instrument that uses immunochromatography for testing various infectious diseases, for example, and is configured so that a liquid sample is added to the test strip 30 through the drip hole 13 provided in the upper case 10, and a color indicating the test result can be visually recognized from the determination window 14 provided side by side with respect to the drip hole 13.

The upper case 10 has a first protrusion 11, a second protrusion 12, a drip hole 13, a judgment window 14, and a pressing pin 15. FIG. 1 shows a perspective view of the back side of the upper case 10, i.e., a perspective view of the upper case 10 seen from the bottom of FIG. 3, and the first protrusion 11, the second protrusion 12, and the pressing pin 15 protrude toward the test strip 30 mounted on the lower case 40. Meanwhile, the drip hole 13 and the judgment window 14 are provided so as to penetrate the upper case 10, allowing the test strip 30 inside the liquid sample testing device to be visually observed. In this embodiment, the drip hole 13 has a circular shape, and the judgment window 14 has a rectangular shape, but the shapes, positions, etc. of each are not particularly limited.

The first protrusion 11 protrudes toward the lower case 40 and is provided so as to extend from the edge of the drip hole 13 on the judgment window 14 side along the arrangement direction X of the drip hole 13 and the judgment window 14. The tip of the first protrusion 11 faces the test strip 30 in the thickness direction Z. On the other hand, the second protrusion 12 protrudes toward the lower case 40 and is provided so as to extend from the edge of the drip hole 13 on the opposite side to the judgment window 14 along the arrangement direction X. The tip of the second protrusion 12 faces the test strip 30 in the thickness direction Z. In FIG. 3, the first protrusion 11 and the second protrusion 12 are positioned with a predetermined interval with respect to the test strip 30, but the first protrusion 11 and the second protrusion 12 may contact the test strip 30. Details of the first protrusion 11 and the second protrusion 12 will be described later.

The pressing pins 15 are arranged in a total of four, two along the arrangement direction X and two along the orthogonal direction Y perpendicular to the arrangement direction X, and are members that prevent the test strip 30 from floating up. In FIG. 3, the pressing pins 15 are positioned at a predetermined interval with respect to the test strip 30, but the pressing pins 15 may contact the test strip 30. However, the pressing pins 15 are not essential members, and the number, position, shape, etc. of the pressing pins 15 are not particularly limited. In this embodiment, the pressing pins 15 are provided on the upper case 10, but the pressing pins 15 are not essential and may be omitted. In this embodiment, the pressing pins 15 are provided in a pin shape, but this is not limited to this. A pressing member 151 as shown in FIG. 7 may be provided. The pressing member 151 may be configured to more stably overlap each of the pads 22, 32, 33, and the membrane 34 according to the cross-sectional shape of the test strip 30.

The test strip 30 is a long member placed on the lower case 40, and as shown in FIG. 3, has a sample pad 31, an adjusting pad 32, a conjugate pad 33, a membrane 34, and an absorbent pad 22 arranged in order along the arrangement direction X. Note that FIG. 3 shows the test strip 30 in a schematic manner, and the thicknesses of the adjusting pad 32, conjugate pad 33, and absorbent pad 22 are not uniform. However, in reality, the sample pad 31, adjusting pad 32, conjugate pad 33, membrane 34, and absorbent pad 22 are each formed in a sheet shape with a uniform thickness.

The sample pad 31 is exposed from the drip hole 13, and has the property of absorbing the liquid sample added from the drip hole 13 and moving the liquid sample. In this embodiment, a second protrusion 12 is provided adjacent to the drip hole 13, and most of the liquid sample added from the drip hole 13 is pulled to the second protrusion 12 by capillary action and then diffuses into the sample pad 31. Of course, some of the liquid sample added from the drip hole 13 does not move toward the second protrusion 12 but toward the first protrusion 11 (details will be described later).

The adjusting pad 32 is arranged with a gap G on the side of the judgment window 14 of the sample pad 31. The adjusting pad 32 is a member arranged for the purpose of imparting a specific function to promote a capture reaction of antigens contained in a liquid sample, an example of which is the extraction of antigens contained in a liquid sample. By providing a gap G between the sample pad 31 and the adjusting pad 32, deterioration of the drug impregnated in the adjusting pad 32 can be suppressed. As with the second protrusion 12, the first protrusion 11 is provided on this gap G adjacent to the drip hole 13, so that the liquid sample can move from the sample pad 31 along the first protrusion 11, over the gap G, and to the adjusting pad 32 side.

The conjugate pad 33 is arranged adjacent to the judgment window 14 side of the adjusting pad 32. The conjugate pad 33 is partially laminated with the adjusting pad 32. The conjugate pad 33 carries a specific antibody (antibody labeled with a substance such as gold colloid or colored latex; colored label), and the liquid sample that reaches the conjugate pad 33 permeates the membrane 34 while dissolving the specific antibody. At this time, the antigen contained in the liquid sample binds to the specific antibody.

The membrane 34 is arranged adjacent to the judgment window 14 of the conjugate pad 33, and can be seen from the judgment window 14 of the upper case 10 located above. The membrane 34 has a capture antibody applied and fixed in a line along the perpendicular direction Y. If an antigen (subject to be measured) bound to a specific antibody is present in the liquid sample, an antigen-antibody reaction occurs between the antigen and the capture antibody fixed to the membrane 34, and a colored label appears on the membrane 34 as a signal. Furthermore, the membrane 34 is connected to an absorbent pad 22 placed on the end of the backing sheet 20, and the liquid sample is finally absorbed by the absorbent pad 22.

Figure 4 shows an enlarged perspective view of the main part of the upper case 10 shown in Figure 1. The first protrusion 11 protrudes from the side of the determination window 14 of the drip hole 13 toward the lower case 40, i.e., along the thickness direction Z, and is provided along the arrangement direction X of the drip hole 13 and the determination window 14. In this embodiment, the first protrusion 11 has a strip shape that extends linearly along the arrangement direction X, and three first protrusions 11 are arranged along the perpendicular direction Y.

On the other hand, the second protrusions 12 protrude from the opposite side of the drip hole 13 from the judgment window 14 toward the lower case 40, i.e., along the thickness direction Z, and are provided along the arrangement direction X. In this embodiment, the first protrusions 11 have a strip shape that extends linearly along the arrangement direction X, and three of them are arranged along the perpendicular direction Y.

In this embodiment, the length of the second protrusions 12 in the arrangement direction X is longer than the length of the first protrusions 11 in the arrangement direction X. That is, as shown in FIG. 4, the relationship between the length L1 of the first protrusions 11 in the arrangement direction X and the length L2 of the second protrusions 12 in the arrangement direction X is L1<L2.

According to this configuration, the capillary force generated between the second protrusion 12 and the liquid sample is greater than the capillary force generated between the first protrusion 11 and the liquid sample. As a result, the force with which the second protrusion 12 pulls the liquid sample dropped on the test strip 30 in the direction opposite to the judgment window 14 can be made stronger than the force with which the first protrusion 11 pulls the liquid sample dropped on the test strip 30 toward the judgment window 14. That is, most of the liquid sample is developed toward the second protrusion 12 side by the second protrusion 12, as shown by the arrow A in FIG. 3. The liquid sample developed toward the second protrusion 12 side then moves toward the absorbent pad 22 side due to the absorption force of the absorbent pad 22. The liquid sample that moves toward the absorbent pad 22 side passes through the first protrusion 11 over the gap G, passes through the conjugate pad 33 and the membrane 34, and develops (permeates, flows) to the absorbent pad 22. The shape, structure, etc. of the test strip 30 are not particularly limited, and for example, the adjusting pad 32 can be omitted. The adjusting pad 32 may also be placed between the conjugate pad 33 and the membrane 34.

In this way, the liquid sample testing device according to this embodiment can control the flow of the liquid sample in the test strip 30 so that the liquid sample dropped into the dropping hole 13 is first advanced in the opposite direction to the determination window 14 and then spread to the side of the determination window 14, and the liquid sample can be spread evenly over the entire test strip 30. Furthermore, by spreading the liquid sample evenly, the dried drug held in the test strip 30 can be sufficiently dissolved to improve the efficiency of the immune reaction and improve the color development that indicates the test result.

In addition, in this embodiment, the first protrusions 11 and the second protrusions 12 are each provided in a plurality (three in this embodiment) in the orthogonal direction Y perpendicular to the arrangement direction X. The spacing W2 between the plurality of second protrusions 12 in the orthogonal direction Y is narrower than the spacing W1 between the plurality of first protrusions 11 in the orthogonal direction Y. That is, as shown in FIG. 4, the relationship between the spacing W1 between the first protrusions 11 in the orthogonal direction Y and the spacing W2 between the second protrusions 12 in the orthogonal direction Y is W1>W2.

According to this configuration, the capillary path formed between the second protrusions 12 is narrower than the capillary path formed between the first protrusions 11. This makes it possible to make the force with which the second protrusions 12 pull the liquid sample dropped on the test strip 30 away from the judgment window 14 stronger than the force with which the first protrusions 11 pull the liquid sample dropped on the test strip 30 toward the judgment window 14. For this reason, as described above, the liquid sample can be uniformly developed, and the pH adjuster, aggregation inhibitor, salt, etc. (dried drug) held in the test strip 30 can be sufficiently dissolved to improve the efficiency of the immune reaction and improve the color development indicating the test result. In this embodiment, the pH adjuster, aggregation inhibitor, salt, etc. are given as examples of dried drugs, but the present invention is not limited to these, and any drug held in the test strip 30 may be used as the dried drug.

By satisfying at least one of the above-mentioned relationships L1<L2, W1>W2, it is expected that the color indicating the test result will be improved.

In addition, the end 11b (see FIG. 3) of the first protrusion 11 on the side of the drip hole 13 in the arrangement direction X is located on the sample pad 31, and the end 11a (see FIG. 3) of the first protrusion 11 on the side of the judgment window 14 in the arrangement direction X is located on the adjusting pad 32. With this configuration, the liquid sample that has spread along the first protrusion 11 to the end 11a on the side of the judgment window 14 can be permeated into the adjusting pad 32. In addition, if the end 11a of the first protrusion 11 is extended to the conjugate pad 33, the liquid sample may flow between the first protrusion 11 and the test strip 30 to the membrane 34 side, and the permeation into the adjusting pad 32 may become shallow. However, in this embodiment, as described above, the end 11a of the first protrusion 11 is positioned above the adjusting pad 32, so that the liquid sample is more likely to permeate into the adjusting pad 32.

The first protrusion 11 is disposed opposite the gap G, is not inserted into the gap G, and covers the gap G. With this configuration, the liquid sample flows along the first protrusion 11, overcomes the gap G, and spreads to the adjusting pad 32.

Second Embodiment
Fig. 5 shows a perspective view of the upper case 10 of a liquid sample testing device according to a second embodiment of the present invention. Fig. 6 shows an enlarged perspective view of the main part of the upper case 10 shown in Fig. 5. In this embodiment, only one first protrusion 11 is provided, and three second protrusions 12 are provided as in the first embodiment. That is, the number of second protrusions 12 is greater than the number of first protrusions 11. The numbers of first protrusions 11 and second protrusions 12 are not particularly limited, but in this embodiment, the relationship (number of first protrusions 11<number of second protrusions 12) is established.

With this configuration, the force with which the second protrusion 12 pulls the liquid sample dropped onto the test strip 30 away from the judgment window 14 can be made stronger than the force with which the first protrusion 11 pulls the liquid sample dropped onto the test strip 30 towards the judgment window 14. Therefore, as in the first embodiment, the liquid sample can be uniformly spread, the dried drug held in the test strip 30 can be sufficiently dissolved to improve the efficiency of the immune reaction, and the color development indicating the test result can be improved.

Third Embodiment
Fig. 7 shows a perspective view of the upper case of the liquid sample testing device according to the third embodiment of the present invention. Fig. 8 shows an enlarged top view of the main part of the upper case shown in Fig. 7. In this embodiment, the second protrusions 12 are provided in a cylindrical (pillar-like) shape. A plurality of second protrusions 12 are provided at intervals along the arrangement direction X from the edge of the drip hole 13 toward the opposite side to the judgment window 14. The plurality of second protrusions 12 arranged along the arrangement direction X constitute a second protrusion row 16. A plurality of second protrusion rows 16 are arranged in the orthogonal direction Y. In this embodiment, 11 second protrusion rows 16 are arranged in a row.

The second protrusions 12 of one of the adjacent second protrusion rows 16 and the second protrusions of the other are not aligned in the perpendicular direction Y, but are aligned in a direction that forms an angle θ of about 45° to 75° with respect to the alignment direction X. That is, the second protrusions 12 of the other of the adjacent second protrusion rows 16 are positioned between the second protrusions 12 of one of the adjacent second protrusion rows 16. This makes it possible to narrow the interval W22 between the second protrusions 12 constituting the adjacent second protrusion rows 16. The interval W21 between the second protrusions 12 of the same second protrusion row 16 is the same as or narrower than the interval W22. The intervals W21 and W22 between these second protrusions 12 are set narrower than the interval W1 between the first protrusions 11.

In addition, in this embodiment, a total of five second protrusion rows 16 consisting of six second protrusions 12 and second protrusion rows 16 consisting of five second protrusions 12 are alternately arranged from the edge of the drip hole 13 away from the judgment window 14. Furthermore, three second protrusion rows 16 consisting of seven second protrusions 12 are arranged from the edges on both sides of the drip hole 13 in the perpendicular direction Y. Of course, the present invention is not limited to the arrangement positions and number of pillar-shaped second protrusions 12 in the examples shown in Figures 7 and 8.

According to the above-mentioned configuration, similar to the first embodiment, the spacing W21, W22 between the multiple second protrusions 12 is narrower than the spacing W1 between the multiple first protrusions 11 in the perpendicular direction Y. In other words, the capillary paths formed between the second protrusions 12 are narrower than the capillary paths formed between the first protrusions 11. This makes it easy to make the capillary force generated between the second protrusions 12 and the liquid sample greater than the capillary force generated between the first protrusions 11 and the liquid sample.

As described above, whether the second protrusions 12 are shaped to extend in the arrangement direction X as in the first embodiment or are pillar-shaped, the narrower the intervals W2, W21, W22, the stronger the capillary force that can be generated. However, if the intervals W2, W21, W22 are made too narrow, there is a risk that the amount of liquid that can hold the liquid sample between the second protrusions 12 will be insufficient. For this reason, the intervals W2, W21, W22 are preferably 0.2 mm to 1.0 mm, more preferably 0.3 to 0.7 mm.

The present invention is not limited to the above-described embodiment, and can be modified, improved, etc. as appropriate. In addition, the material, shape, dimensions, values, form, number, location, etc. of each component in the above-described embodiment are arbitrary as long as they can achieve the present invention, and are not limited.

For example, in the second embodiment, the second protrusion 12 is cylindrical, but this is not limited to this. The second protrusion 12 may be brush-shaped or porous.

In the second embodiment, the second protrusions 12 are also provided on both edges of the drip hole 13 in the perpendicular direction Y, but this is not limited to this. The second protrusions 12 do not have to be provided on both edges of the drip hole 13 in the perpendicular direction Y.

In addition, the surface state of each of the first protrusion 11 and the second protrusion 12 may be adjusted in order to more effectively adjust the capillary force generated between the first protrusion 11 and the second protrusion 12 and the liquid sample. Specifically, the first protrusion 11 and the second protrusion 12 may be formed from a material having an appropriate surface energy, or the surface may be modified (coated, etc.), or a method may be used to use a fine structure such as unevenness on the surface of the first protrusion 11 and the second protrusion 12 by blasting, etc., but this is not the only method as long as the capillary force can be adjusted. In addition, the adjustment of the surface state is not limited to the surfaces of the first protrusion 11 and the second protrusion 12. It may also be performed on parts of the upper case 10 other than the first protrusion 11 and the second protrusion 12 (for example, the entire surface of the upper case 10 or the area around the base of the first protrusion 11 and the second protrusion 12 of the upper case 10).

10 Upper case 11 First protrusion 12 Second protrusion 13 Dropping hole 14 Judgment window 15 Pressing pin 20 Backing sheet 22 Absorbent pad 30 Test strip 31 Sample pad 32 Adjusting pad 33 Conjugate pad 34 Membrane 40 Lower case

Claims (6)

an upper case having a liquid sample dropping hole and a test result determination window arranged side by side;
a lower case assembled to the upper case;
a test strip accommodated between the upper case and the lower case,
The upper case is
a first protrusion protruding from an edge of the drip hole on the determination window side toward the lower case;
a second protrusion protruding from an edge of the drip hole on an opposite side to the determination window from the first protrusion toward the lower case,
the first and second protrusions are shaped so that a capillary force that occurs between the second protrusion and the liquid sample and that causes the second protrusion to pull the liquid sample is greater than a capillary force that occurs between the first protrusion and the liquid sample and causes the first protrusion to pull the liquid sample, so that at least a portion of the liquid sample dropped into the dropping hole is developed toward the second protrusion by the second protrusion, and then directed toward the first protrusion ;
The second protrusion is provided in a pillar shape,
a second protrusion row in which a plurality of the second protrusions are arranged at intervals from an edge of the drip hole toward a side opposite to the determination window along an arrangement direction of the determination window and the drip hole;
The second protrusion row is arranged in a direction other than the arrangement direction,
The first protrusion extends from an edge of the drip hole toward the determination window along the arrangement direction,
The first protrusions are arranged in a plurality of rows in a direction other than the arrangement direction,
The interval between the second projections is narrower than the interval between the first projections.
Liquid sample testing tool. an upper case having a liquid sample dropping hole and a test result determination window arranged side by side;
a lower case assembled to the upper case;
a test strip accommodated between the upper case and the lower case,
The upper case is
a first protrusion protruding from an edge of the drip hole on the determination window side toward the lower case;
a second protrusion protruding from an edge of the drip hole on an opposite side to the determination window from the first protrusion toward the lower case,
the first and second protrusions are shaped so that a capillary force that occurs between the second protrusion and the liquid sample and that causes the second protrusion to pull the liquid sample is greater than a capillary force that occurs between the first protrusion and the liquid sample and causes the first protrusion to pull the liquid sample, so that at least a portion of the liquid sample dropped into the dropping hole is developed toward the second protrusion by the second protrusion, and then directed toward the first protrusion;
The first protrusion extends from an edge of the drip hole toward the determination window along an arrangement direction of the drip hole and the determination window,
The second protrusion extends from an edge of the drip hole toward a side opposite to the determination window along the arrangement direction,
The length of the second protrusion in the arrangement direction is longer than the length of the first protrusion in the arrangement direction.
Liquid sample testing tool. 3. The liquid sample testing device according to claim 2 ,
The number of the second protrusions is greater than the number of the first protrusions.
Liquid sample testing tool. The liquid sample testing device according to claim 2 or 3 ,
The first protrusions and the second protrusions are each provided in a plurality of rows in a direction other than the arrangement direction,
The interval between the second projections is narrower than the interval between the first projections.
Liquid sample testing tool. The liquid sample testing device according to any one of claims 1 to 4 ,
The test strip has a sample pad exposed from the drip hole, an adjusting pad arranged on the judgment window side of the sample pad with a gap provided, a conjugate pad arranged adjacent to the judgment window side of the adjusting pad, and a membrane arranged adjacent to the judgment window side of the conjugate pad and visible through the judgment window,
an end portion of the first protrusion on the side of the drip hole in the arrangement direction is positioned on the sample pad, and an end portion of the first protrusion on the side of the determination window in the arrangement direction is positioned on the adjusting pad;
Liquid sample testing tool. The liquid sample testing device according to any one of claims 1 to 5 ,
The test strip has a sample pad exposed from the drip hole, an adjusting pad arranged on the judgment window side of the sample pad with a gap provided, a conjugate pad arranged adjacent to the judgment window side of the adjusting pad, and a membrane arranged adjacent to the judgment window side of the conjugate pad and visible through the judgment window,
The first protrusion is provided facing the gap and is not inserted into the gap.
Liquid sample testing tool.

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