Membrane Carrier and Kit for Testing Liquid Sample Using Same

• US 20200132679A1
• Filed: 03/28/2018
• Published: 04/30/2020
• Est. Priority Date: 03/28/2017
• Status: Active Grant

• Current Assignee: Denka Company Limited
• Original Assignee: Denka Company Limited
• Inventors: AOYAMA, Shuhei, MONDEN, Kenji
• Granted Patent: US 11,385,227 B2
• Time in Patent Office: Days
• CPC Class Codes: G01N 21/78 producing a change of colour
• CPC Class Codes: G01N 33/54388 based on lateral flow
• CPC Class Codes: G01N 33/544 the carrier being organic

Abstract

The present invention provides a membrane carrier 3 comprising a flow path 2 and a detection zone 3y, wherein a microstructure is provided at the bottom of the flow path 2 and a mean surface roughness of the microstructure is 0.005 to 10.0 μm.

Claims

1. A membrane carrier comprising a flow path and a detection zone wherein

a microstructure is formed at the bottom of the flow path and

a mean surface roughness in the microstructure is 0.005 to 10.0 μ

m.

3. The membrane carrier according to claim 1, wherein a height of the microstructure in the flow path is 5 to 1000 μ

m.

4. The membrane carrier according to claim 1, wherein a bottom diameter of the microstructure is 5 to 1000 μ

m.

5. The membrane carrier according to claim 1, wherein a nearest distance between the microstructures in the flow path is 0 to 500 μ

m.

6. The membrane carrier according to claim 1, wherein an aspect ratio of the microstructure is 0.1 to 10.

7. The membrane carrier according to claim 1, being a membrane carrier for a detection kit, which detects a target substance in a liquid sample.

8. The membrane carrier according to claim 7, wherein the detection zone produces a color change when the target substance is detected.

9. The membrane carrier according to claim 7, wherein a detection substance responsible for producing a color change when the target substance is detected is immobilized in the detection zone.

10. A liquid sample test kit having the membrane carrier according to claim 1.

2. A membrane carrier comprising

a flow path and a detection zone, wherein

a microstructure is provided at the bottom of the flow path,

at least one of a carbon atom and a nitrogen atom and an oxygen atom are present on a surface of the detection zone, and a ratio of the number of oxygen atoms relative to a total number of individual types of atoms (number of oxygen atoms/(number of carbon atoms+number of nitrogen atoms+number of oxygen atoms)) is 0.01 to 0.50.