ELECTROCHEMICAL SENSOR AND METHOD FOR PRODUCING ELECTROCHEMICAL SENSOR

• US 20160116429A1
• Filed: 10/19/2015
• Published: 04/28/2016
• Est. Priority Date: 10/22/2014
• Status: Active Grant

• Current Assignee: ARKRAY, Inc
• Original Assignee: ARKRAY, Inc
• Inventors: MURASE, Yosuke
• Granted Patent: US 10,473,611 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: G01N 27/301 Reference electrodes
• CPC Class Codes: G01N 27/307 Disposable laminated or multilayered electrodes G01N27/3272 takes precedence
• CPC Class Codes: G01N 27/40 Semi-permeable membranes or partitions
• CPC Class Codes: H05K 1/028 Bending or folding regions of flexible printed circuits H05K1/0283 takes precedence
• CPC Class Codes: H05K 1/0313 Organic insulating material
• CPC Class Codes: H05K 1/097 Inks comprising nanoparticles and specially adapted for being sintered at low temperature H05K1/095 takes precedence

Abstract

An electrochemical sensor includes a base member, a conductor disposed on the base member, an insulating layer covering the conductor with a portion of the conductor exposed, a silver/silver chloride electrode formed on at least the exposed portion of the conductor, and a water-permeable organic layer covering the silver/silver chloride electrode.

Claims

1. An electrochemical sensor comprising:

a base member;

a conductor disposed on the base member;

an insulating layer covering the conductor with a portion of the conductor exposed;

a silver/silver chloride electrode formed at least on the exposed portion of the conductor; and

a water-permeable organic layer covering the silver/silver chloride electrode.

2. The electrochemical sensor according to claim 1, wherein the silver/silver chloride electrode is formed on the exposed portion of the conductor and on the insulating layer.

3. The electrochemical sensor according to claim 1, wherein the organic layer is a limiting film that restricts transmission of a component eluted from silver/silver chloride.

4. The electrochemical sensor according to claim 3, wherein the limiting film is a film of a polymer having a hydrophilic group.

5. A method for producing an electrochemical sensor, comprising:

forming a structure including a base member, a conductor disposed on the base member, and an insulating layer covering the conductor with a portion of the conductor exposed;

forming a silver/silver chloride electrode on the structure in such a manner as to be in contact with at least the exposed portion of the conductor; and

forming a water-permeable organic layer covering the silver/silver chloride electrode.

6. The method for producing an electrochemical sensor according to claim 5, wherein the forming a silver/silver chloride electrode includes applying a silver/silver chloride ink on the structure.

7. A silver/silver chloride electrode for an electrochemical sensor, which is formed to be in contact with an exposed portion of a conductor covered with an insulating layer, and is covered with an organic layer.