Dry electrode

• US 8,644,904 B2
• Filed: 06/22/2009
• Issued: 02/04/2014
• Est. Priority Date: 01/17/2009
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chang, Cheng-Hung, Ouyang, Yi-Shiang, Chang, Wen-Ying
• Primary Examiner(s): Dvorak, Linda
• Assistant Examiner(s): ANTISKAY, BRIAN MICHAEL
• Application Number:
  US12/488,987
• Publication Number:
  US 20100185077A1
• Time in Patent Office: 1,688 Days
• Field of Search: 600/372, 600/382, 600/384, 600/386, 600395-396, 600389-393, 607/116, 607/149, 607/152
• US Class Current: 600/382
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: C25D 5/56 of plastics

Abstract

A flexible dry electrode and the manufacturing method thereof are provided. The electrode has an electroplated uneven surface and at least one hole and is made of porous material.

Claims

1. A dry electrode, comprising:

a main layer comprising a flexible material divided into a plurality of spaced apart sections, with adjacent sections separated from one another by a through hole, with each section of the main layer having;

a first uneven surface with a plurality of protrusions and at least one concavity therebetween, and a second surface opposite the first uneven surface;

a conductive layer embedded in the main layer and extending through the plurality of spaced apart sections and the through holes; and

a fixing unit connected to the second surface of the main layer.

2. A dry electrode according to claim 1, each of the plurality of protrusions has a width, each of the plurality of concavities has a depth, and the width and the depth have a range from 100 um to 1000 um.

3. A dry electrode according to claim 1, wherein the flexible material is a conductive polymeric material being one selected from a group consisting of a compositive conductive material, a structural conductive material and a combination thereof.

4. A dry electrode according to claim 3, wherein the compositive conductive material is one selected from a group consisting of a carbon black, a metal powder, a metal piece, a metal fiber, a carbon fiber and a combination thereof.

5. A dry electrode according to claim 3, wherein the structural conductive material is one selected from a group consisting of a polyacetylene, a polypyrrole, a polyphenylene sulfide, a poly (phthalocyanine) compound, a polyaniline, a polythiophene and a combination thereof.

6. A dry electrode according to claim 1, wherein the main layer is made of a flexible conductive porous plastic.

7. A dry electrode according to claim 1, wherein the dry electrode further comprises an electroplating layer coated on the first uneven surface and made of a material being one selected from a group consisting of a silver, a chlorine silver, a gold, a titanium, a platinum, a stainless steel, an alumni oxide, a carbon, a carbon fiber, a carbon nanotube, a graphite, a diamond and a combination thereof.

8. A dry electrode according to claim 1 further comprising a connector electrically coupled to the conductive layer, and outputting an electric signal.

9. A dry electrode according to claim 1, wherein the fixing unit covers the main layer and comprises a cohering layer, an insulating layer and an isolating layer, the cohering layer provides a mechanically cohering strength for fixing the dry electrode on a target surface when the dry electrode is used, the insulating layer provides an insulation for the dry electrode, and the isolating layer provides a faraday shield for the dry electrode.

10. A dry electrode according to claim 1, wherein at least one of the through hole penetrating holes penetrates the main layer.

11. A dry electrode, comprising:

a main body having an uneven surface with a plurality of protrusions and a plurality of concavities, a through hole disposed in at least one of the plurality of concavities and a second surface opposite the uneven surface, and being made of a flexible material; and

a conductive element embedded into the main body.

12. A dry electrode according to claim 11, wherein the main body is formed of a porous material.

13. A dry electrode according to claim 11, wherein the through hole penetrates the main body and the second surface is opposite to the first uneven surface.