Analysis device

• US 9,045,790 B2
• Filed: 04/25/2012
• Issued: 06/02/2015
• Est. Priority Date: 04/26/2011
• Status: Active Grant

• Current Assignee: ARKRAY, Inc
• Original Assignee: ARKRAY, Inc
• Inventors: Tsukada, Masashi
• Primary Examiner(s): Van, Luan
• Assistant Examiner(s): ROSENWALD, STEVEN ERIC
• Application Number:
  US13/455,555
• Publication Number:
  US 20120273368A1
• Time in Patent Office: 1,133 Days
• Field of Search: 205/775, 204/400, 20440301-40314
• US Class Current: 1/1
• CPC Class Codes: C12Q 1/004 mediator-assisted
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: G01N 2333/902 Oxidoreductases (1.)
• CPC Class Codes: G01N 2333/904 acting on CHOH groups as donors, e.g. glucose oxidase, lactate dehydrogenase (1.1)
• CPC Class Codes: G01N 27/3271 Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood amperometry per se G01N27/49; aspects concerning the enzyme reagent C12Q1/001
• CPC Class Codes: G01N 27/3273 Devices therefor, e.g. test element readers, circuitry details not specific to biochemical electrodes G01N33/4875

Abstract

An analysis device is disclosed which includes an electron detection medium to obtain information needed for analyzing an analyte in correlation with an electron transfer level, and a reagent part which is disposed on the electron detection medium and includes an electron transporting substance to transport electrons between the analyte and the electron detection medium, the electron transporting substance including a water-soluble aromatic heterocycle compound, and being free of a metal complex. An analysis method using the analysis device is also disclosed.

Claims

1. An analysis device comprising:

an electron detection medium to obtain information needed for analyzing an analyte in correlation with an electron transfer level; and

a reagent part which is disposed on the electron detection medium and comprises an oxidoreductase that transfers an electron to or from the analyte, and

electron transporting substances to transport electrons between the oxidoreductase and the electron detection medium,

wherein the electron transporting substances comprise 4-aminomethyl pyridine or 5-amino-4-imidazolecarboxamide, and are free of a metal complex.

2. The analysis device according to claim 1, wherein a concentration of the electron transporting substances is from 10 mass % to 60 mass % based on a total mass of the reagent part.

3. The analysis device according to claim 1, wherein the reagent part further comprises a crosslinked substance obtained by crosslinking using at least one member selected from the group consisting of glutaraldehyde, carbodiimide compounds and succinimide esters.

4. The analysis device according to claim 1, wherein the electron detection medium is an electric conductor.

5. The analysis device according to claim 1, wherein the analyte is a saccharide.

6. The analysis device according to claim 1, wherein the electron transporting substances comprise 4-aminomethyl pyridine.

7. The analysis device according to claim 1, wherein the electron transporting substances comprise 5-amino-4-imidazolecarboxamide.

10. The analysis method according to claim 1, wherein the reagent part further comprises a crosslinked substance obtained by crosslinking using at least one selected from the group consisting of glutaraldehyde, carbodiimide compounds and succinimide.

8. An analysis method comprising

transporting electrons in a reagent part of an analysis device by electron transporting substances between an analyte and an electron detection medium, wherein

the reagent part is disposed on the electron detection medium and comprises an oxidoreductase that transfers an electron to or from the analyte, and

the electron transporting substances that transport electrons between the oxidoreductase and the electron detection medium comprise 4-aminomethyl pyridine or 5-amino-4-imidazolecarboxamide, and are free of a metal complex;

and

obtaining information about the analyte based on an electron transfer level of the analyte by the transporting electrons step.

9. The analysis method according to claim 8, wherein a concentration of the electron transporting substances is from 10 mass % to 60 mass % based on a total mass of the reagent part.

11. The analysis method according to claim 8, wherein the electron detection medium is an electric conductor.

12. The analysis method according to claim 8, wherein the analyte is a saccharide.

13. The analysis method according to claim 8, wherein the electron transporting substances comprise an electron cloud of pi-electrons perpendicular to the surfaces of the molecules of 4-aminomethyl pyridine or 5-amino-4-imidazolecarboxamide.

14. The analysis method according to claim 8, wherein the information includes an amount, kind, or oxidation-reduction state of the analyte, or a time-dependent change in the analyte.

15. The analysis method according to claim 8, wherein the electron transporting substances are not a polymer.