BIOLOGICAL ELECTRODE AND METHOD OF MAKING SAME

• US 3,565,059 A
• Filed: 06/07/1968
• Issued: 02/23/1971
• Est. Priority Date: 06/07/1968
• Status: Expired due to Term

• Current Assignee: Marlin S. Liles, Ray L. Hauser
• Original Assignee: Marlin S. Liles, Ray L. Hauser
• Inventors: Hauser, Ray L., Liles, Marlin S.
• Application Number:
  US04/735,394
• Time in Patent Office: 991 Days
• US Class Current: 600/391
• CPC Class Codes: A61B 5/259 using conductive adhesive means, e.g. gels

Abstract

Electrode for application to the skin of the human anatomy for use with electromedical devices, such as electrocardiograph apparatus, which employs a normally dry electroconductive material, which, when wetted with a solvent, has adhesive properties for maintaining it firmly affixed to the skin. The electroconductive material is also bonded to a lead wire, minimizing electrical resistance between them in contradistinction to juncture contact between metallic electrical conductors.

Claims

2. Apparatus in accordance with claim 1 wherein said terminal portion comprises a first portion extending through the base member from the exposed side to the body side, the leg portion aforesaid forming a continuation thereof, and another continuing portion extending from an end of the leg portion through the base member to the exposed face and therealong, thus forming said structural securement.

3. Apparatus in accordance with claim 2, including a sheetlike electrical insulating member adhesively secured to said exposed face and over the uninsulated wire lying adjacent thereof.

4. Apparatus in accordance with claim 3, including a plurality of electrodes, the electrical insulating members on the various electrodes being suitably coded to visually distinguish therebetween.

5. Apparatus in accordance with claim 4, wherein the exposed faces of said insulating members are of different color.

6. Apparatus in accordance with claim 1, including a plurality of series connected leg portions disposed contiguous with said body face.

7. Apparatus in accordance with claim 1, wherein said uninsulated wire terminal portion is an integral part of an insulated lead wire extending between the electrode and electromedical apparatus, thus forming a continuous electrical conductor, without junctures, between the electroconductive adhesive and the electromedical apparatus.

8. Apparatus in accordance with claim 7, wherein the terminal end of the uninsulated wire is twisted about the lead wire.

9. The method of making an electrode for use in transmitting an electrical signal between the skin of the human anatomy and electromedical apparatus, comprising the steps of:

a. forming a base member from flexible sheet material to a desired flat shape, thus providing a body face and an opposite exposed face;

b. forming at least two spaced apertures through the base member;

c. threading an uninsulated wire through one of the apertures from the exposed face to the body face, thence therealong to another aperture, and therethrough back to the exposed face, and thence therealong, to thus provide a leg portion contiguous with the body face, structurally secured to the base member;

d. coating said leg portion and said body face with a sheetlike coating of liquid electroconductive adhesive of a type adapted to dry but again become adhesive when wetted with a solvent, thus embedding the leg portion in the adhesive; and

e. drying the adhesive, forming a dried bond between same and the wire and also a bond to the base member.

10. The method of claim 9 including the further steps of threading the wire through the base member, alternately from one face to the other, to provide a plurality of leg portions contiguous with the body side.

11. The method of claim 9 including the further step of twisting the terminal end of the wire about an intermediate portion thereof.