DISPOSABLE BODY ELECTRODES

• US 3,830,229 A
• Filed: 08/09/1972
• Issued: 08/20/1974
• Est. Priority Date: 08/09/1972
• Status: Expired due to Term

• Current Assignee: Andover Medical Incorporated 341 Middlesex Street MA
• Original Assignee: Joseph H. Johnson
• Inventors: Johnson, Joseph H.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Cohen, Lee S.
• Application Number:
  US05/279,276
• Time in Patent Office: 741 Days
• Field of Search: 128/2.6E,DIG.4,418,417,416,404,405,410,411,2.1E 206/63.2R 204/196B
• US Class Current: 600/392
• CPC Class Codes: A61B 2562/0217 Electrolyte containing
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/257 using adhesive means, e.g. adhesive pads or tapes
• CPC Class Codes: A61B 5/266 containing electrolytes, conductive gels or pastes

Abstract

A single use cardiograph electrode has a self-contained electrolyte gel-impregnated pad therein set in a cup and sealed with a cap which forms an integral mechanical and frictional seal with the cup to prevent electrolyte dry-out.

Claims

1. A disposable, skin-contacting body electrode having a selfcontained electrolyte gel therein, comprising:

a relatively thin, flexible, non-conductive sheet material having an aperture therein and an adhesive layer thereon for contact with the skin of a subject, a cup-shaped member, including a cavity therein, disposed in the aperture so that the opening of the cavity is toward the skincontacting area and the rim of the cup contacts the skin surface, a securing member bonded to the base of the cup-shaped member and the non-adhesive-coated surface of the non-conductive sheet material holding the cup-shaped member in the aperture thereof, a male snap connector having an inner conductive disc disposed in the base of the cavity of the cup-shaped member interconnecting with an outer conductive disc disposed over the securing member having means thereon for connecting a lead wire thereto, a strippable sheet covering only the adhesive-coated surface of the non-conductive sheet material, an electrolyte gel-impregnated pad disposed in the cavity of the cup-shaped member in contact with the inner conductive disc and extending beyond the rim of the cup-shaped member into contact with the skin surface when the electrode is applied to the skin, and a cap member over the pad and cup-shaped member including an inwardly extending flange around the inner circumference of the cap member which grips the side walls of the cup-shaped member to form an integral, frictional seal therebetween.

2. The body electrode of claim 1 wherein the cup-shaped member includes a rib extending around its outer circumference which mates with the flange of the cap member, the rib forming a mechanical seal with the flange of the cap member and aiding to retain the cap member over the cup-shaped member.

3. The body electrode of claim 1 wherein the cap member is hat-shaped in cross-section and wherein the inwardly extending flange is around the inner circumference of the side walls and wherein a projection extends downwardly from the base thereof, contacting the gel pad to retain it in position.

4. The body electrode of claim 1 wherein the cap member includes a rim portion overlapping the strippable sheet so that when the sheet is peeled off the non-conductive sheet material, the cap member is also removed from the cup-shaped member.