IP Library Granted Patent US 12693292
Granted Patent B2
US 12693292 · App. 18/034,342 · Granted Jul 28, 2026

Immunochromatography assay kit

Inventors: Takahiko Hariyama (Hamamatsu, JP); Hideya Kawasaki (Hamamatsu, JP); Hiroaki Ohba (Iwata, JP)
Assignees: NATIONAL UNIVERSITY CORPORATION HAMAMATSU UNIVERSITY SCHOOL OF MEDICINE; NTN Corporation
G01N33/54388
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Quick Facts
Patent No.
US 12693292
App. No.
18/034,342
Granted
Jul 28, 2026
Kind
B2
Abstract

An immunochromatography assay kit includes a specimen dropping portion to which a specimen is dropped, a conjugate portion to which a labeled antibody having a property of binding to a detection target in the specimen is immobilized, and a plurality of detection portions to which a capture antibody having a property of binding to the detection target is immobilized. The specimen dropping portion, the conjugate portion, and the plurality of detection portions are formed on a porous member. An outer shape of each detection portion is a dot shape.

Claims (27)

1 . An immunochromatography assay kit comprising:

a specimen dropping portion;

a conjugate portion on which a labeled antibody having a property of binding to a detection target in the specimen is immobilized; and

a detection portion to which a capture antibody having a property of binding to the detection target is attached,

wherein the specimen dropping portion, the conjugate portion, and the detection portion are formed on a porous member, and

wherein a cross-sectional shape of the detection portion is a recess which includes a bottom surface and opposing wall surfaces on either side of the bottom surface.

2 . An immunochromatography assay kit comprising:

a specimen dropping portion;

a conjugate portion to which a labeled antibody having a property of binding to a detection target in the specimen is attached; and

at least one detection portion to which a capture antibody having a property of binding to the detection target is attached,

wherein the specimen dropping portion, the conjugate portion, and the at least one detection portion are formed on a porous member,

at least one recess is formed in the porous member, and

the at least one detection portion includes a bottom surface of the at least one recess.

3 . The immunochromatography assay kit according to claim 1 , wherein a width of the at least one detection portion is less than 1 mm.

4 . The immunochromatography assay kit according to claim 1 , wherein the width of the at least one detection portion is less than or equal to 100 μm.

5 . The immunochromatography assay kit according to claim 1 , wherein the at least one detection portion is a plurality of detection portions.

6 . The immunochromatography assay kit according to claim 5 , wherein the plurality of detection portions are arranged one-dimensionally or two-dimensionally.

7 . The immunochromatography assay kit according to claim 5 , wherein a shortest distance between two adjacent detection portions among the plurality of detection portions is less than 1 mm.

8 . The immunochromatography assay kit according to claim 5 , wherein the plurality of detection portions include a first detection portion to which a first capture antibody having a property of binding to the detection target of a first type is immobilized and a second detection portion to which a second capture antibody having a property of binding to the detection target of a second type is immobilized.

9 . The immunochromatography assay kit according to claim 1 , wherein the specimen dropping portion, the conjugate portion, and the at least one detection portion are formed on a single porous member.

10 . The immunochromatography assay kit according to claim 1 , wherein the specimen dropping portion, the conjugate portion, and the at least one detection portion are formed on a plurality of the porous members.

11 . The immunochromatography assay kit according to claim 2 , wherein a width of the at least one detection portion is less than 1 mm.

12 . The immunochromatography assay kit according to claim 2 , wherein the width of the at least one detection portion is less than or equal to 100 μm.

13 . The immunochromatography assay kit according to claim 2 , wherein the at least one detection portion is a plurality of detection portions.

14 . The immunochromatography assay kit according to claim 2 , wherein the at least one detection portion is a plurality of detection portions.

15 . The immunochromatography assay kit according to claim 3 , wherein the at least one detection portion is a plurality of detection portions.

16 . The immunochromatography assay kit according to claim 1 , wherein the cross-sectional shape of the detection portion is a tapered shape in which the interval between the opposing wall surfaces becomes narrower as approaching the bottom surface.