Medical electrode

• US 7,252,792 B2
• Filed: 07/21/2004
• Issued: 08/07/2007
• Est. Priority Date: 09/27/2002
• Status: Active Grant

• Current Assignee: Axelgaard Manufacturing Co. Ltd.
• Original Assignee: Axelgaard Manufacturing Co. Ltd.
• Inventors: Heard, Steve, Shenkute, Solomon E., Perrault, James J.
• Primary Examiner(s): Kopec; Mark
• Assistant Examiner(s): VIJAYAKUMAR, KALLAMBELLA M
• Application Number:
  US10/896,303
• Publication Number:
  US 20050085706A1
• Time in Patent Office: 1,112 Days
• Field of Search: 255/500, 255/510, 255/511, 428/355.R, 428/355.AC, 428/500, 428/523, 522/40, 522/181, 600/391, 600/392, 600/397
• US Class Current: 252/500
• CPC Class Codes: A61B 5/259 using conductive adhesive means, e.g. gels
• CPC Class Codes: A61L 15/58 Adhesives
• CPC Class Codes: A61N 1/048 Electrodes characterised by a specific connection between lead and electrode
• CPC Class Codes: A61N 1/0484 Garment electrodes worn by the patient
• CPC Class Codes: A61N 1/0496 characterised by using specific chemical compositions, e.g. hydrogel compositions, adhesives
• CPC Class Codes: C08F 220/06 Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
• CPC Class Codes: C08F 283/06 on to polyethers, polyoxymethylenes or polyacetals C08F283/004 takes precedence
• CPC Class Codes: C08K 5/053 Polyhydroxylic alcohols
• CPC Class Codes: C09J 2301/408 additives as essential feature of the adhesive layer
• CPC Class Codes: C09J 7/385 Acrylic polymers
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2852 Adhesive compositions
• CPC Class Codes: Y10T 428/2857 including metal or compound thereof or natural rubber
• CPC Class Codes: Y10T 428/2861 having readily strippable combined with readily readhearable properties [e.g., stick-ons, etc.]
• CPC Class Codes: Y10T 428/2891 including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31938 Polymer of monoethylenically unsaturated hydrocarbon

Abstract

An electrode providing electrical contact with a patient'"'"'s skin includes a conductive member adapted for connection to an external electrical apparatus and a non-liquid water containing film for electrically interfacing to said patient'"'"'s skin, the non-liquid film being electrically and mechanically connected to said conductive member. The non-liquid water containing film includes an electrically conductive organic polymer plasticized with a polyhydric alcohol with said organic polymer being derived from a monomeric mixture comprising from about 2 to 30 pph acrylic acid, 2 to 30 pph of a glycolvinylether and 0.01 to 1.5 pph of a crosslinking agent. Preferably the polyhydric alcohol is glycerol.

Claims

1. A conductive organic polymer comprising an electrically conductive organic polymer plasticized with a polyhydric alcohol with organic polymer being from a monomeric mixture comprising from about 2 to 30 pph acrylic acid, 2 to 30 pph of a glycolvinylether, and 0.01 to 1.5 pph of a crosslinking agent.

2. The polymer of claim 1 wherein polyhydric alcohol is glycerol.

3. The polymer of claim 2 wherein crosslinking agent is selected from the group consisting of methylene bis-acrylamide and polyethylene glycol diacrylates and dimethacrylates having a molecular weight from about 200 to about 600, and ethoxylated trimethylolpropane triacrylate (ETMPTA).

4. The polymer of claim 3 wherein crosslinking agent is ETMPTA.

5. The polymer of claim 1 wherein glycolvinylether is selected from the group consisting of hydroxybutylvinylether, ethyleneglycolvinylether, diethylene glycol vinylether, and triethyleneglycolmethylvinylether.

6. The polymer of claim 5 wherein glycol-vinylether is diethylene glycol vinyl ether.

7. The polymer of claim 5 wherein monomeric mixture further comprises from about 35 to 60 pph of glycerol.

8. The polymer of claim 7 wherein at least a portion of acrylic acid is replaced with 2-acrylamido propane sulfonic acid (AMPS) or a cationic acrylic ester.

9. The polymer of claim 1 wherein monomeric mixture further comprises from 0.01 to 3 pph of ultraviolet sensitive curing agents.

10. The polymer of claim 9 wherein ultraviolet sensitive curing agent is selected from the group consisting of 2-hydroxy-2-methyl-1-phenylpropan-2-one, 4-(2-hydroxyethoxy)phenyl (2-hydroxy-2-phenyl-2-hydroxy-2-propyl)ketone, 2,2-dimethoxy-2-phenyl-acetophenone 1-[4-(2-Hydroxyethoxy)-phenyl]2hydroxy2-methyl-1-propane-1-one, 1-hydroxycyclohexylphenyl ketone, trimethyl benzoyl diphenyl phosphine oxide and mixtures thereof.

11. The polymer of claim 10 wherein mixture comprises from 5 to 25 pph acrylic acid and from 5 to 25 pph of a glycolvinylether.

12. The polymer of claim 11 wherein glycolvinylether is selected from the group consisting of hydroxybutylvinylether, ethyleneglycolvinylether, diethylene glycol vinylether, and triethyleneglycolmethylvinylether.

13. The polymer of claim 12 wherein glycol vinylether is diethylene glycol vinyl ether.

14. The polymer of claim 11 wherein monomeric mixture further comprises an aldehyde reactant or neutralizer.

15. The polymer of claim 14 wherein aldehyde reactant or neutralizer is selected from the group consisting of hydrogen peroxide, hydroxyethylethylene urea and L-arginine hydrochloride.

16. The polymer of claim 15 wherein aldehyde reactant or neutralizer is 2-hydroxyethylethylene urea.