EKG Electrode

• US 4,441,500 A
• Filed: 03/25/1981
• Issued: 04/10/1984
• Est. Priority Date: 04/17/1980
• Status: Expired due to Term

• Current Assignee: Ferris Pharmaceuticals Incorporated
• Original Assignee: Ferris Mfg. Corp.
• Inventors: Sessions, Robert W., Rodzen, Richard A., Jeslis, Jerome
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US06/247,560
• Time in Patent Office: 1,112 Days
• Field of Search: 128/639-641, 128/644, 128/783, 128/798, 128/803
• US Class Current: 600/392
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61B 2562/242 Packaging, i.e. for packaging the sensor or apparatus before use
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/27 Conductive fabrics or textiles
• CPC Class Codes: A61B 5/28 for electrocardiography [ECG]

Abstract

A circular EKG electrode has a plastic woven fabric body to which is attached a two-part connector. A jel impregnated disk is positioned over one part of the connector. The entire electrode is sealed in a disposable plastic package.

Claims

1. An improved EKG electrode comprising:

an annular plastic base liner with a centrally located hole therein;

a circular plastic disk removably attached to a first side of said base liner covering said hole;

a circular plastic fabric member with a layer of adhesive on a first surface concentrically positioned with respect to said disk and attached thereto by said layer of adhesive, said fabric member is removably attached at said first surface to said first side of said base liner;

means for electrical connection, said means extends at least through said circular plastic disk with a first portion located adjacent a first side of said disk, and essentially centered with respect to said hole in said base liner, and a second portion which extends outwardly from on opposite side of said circular plastic disk,

a jel impregnated foam cylinder essentially centered with respect to said hole and extending in part therethrough with a planar end surface covering said first portion of said means for electrical connection, a part of said planar end surface is attached to a portion of said first side of said disk;

a layer of adhesive formed on a second side of said base liner, said layer of adhesive extending continuously across said base layer from edge to edge thereof and surrounding said centrally located hole;

a plastic cover with integrally formed planar sealing members, said planar sealing members are sealingly affixed to said second side of said base liner by said continuous layer of adhesive with said cover, said liner and said disk forming a sealed moisture retaining region such that said jel in said disk is prevented from drying out and hardening.

2. The improved EKG electrode according to claim 1, including further:

a release liner adheringly affixed to a portion of said first surface of said fabric member adjacent a portion of said first side of said base liner such that said release liner and said attached portion of said fabric member can be manually and readily separated from said base liner in order to remove said base liner and said cover from said fabric member, said disk, said means for electrical connection and said jel impregnated cylindrical member.

3. An EKG electrode comprising:

a circular moisture resistant flexible plastic disk,

a flexible circular plastic body member with a layer of adhesive formed on one surface thereof,

a jel impregnated foam cylinder,

said moisture resistant flexible plastic disk is adheringly attached to said one surface of said flexible circular plastic body member,

said jel impregnated foam cylinder is attached at an end to a part of a first surface of said circular moisture resistant flexible plastic disk,

means for electrical connection, said means passes through at least said circular moisture resistant flexible plastic disk and has a conductive surface positioned adjacent a part of said end of said jel impregnated foam cylinder,

a moisture resistant plastic base liner of a selected shape with a circular hole therethrough,

a second layer of adhesive formed as a continuous strip on a first side of said plastic base liner surrounding said circular hole,

moisture resistant means for covering having planar sealing regions, said planar sealing regions being in sealing contact with said second continuous layer of adhesive with a part of said moisture resistant means covering said hole in said plastic base liner,

said assemblage of said flexible, circular plastic body member, said jel impregnated foam cylinder, said moisture resistant flexible plastic disk and said means for connection is removably attached to a second side of said moisture resistant plastic base liner by means of said layer of adhesive with a part of said jel impregnated foam cylinder positioned within said hole in said base liner such that a second end of said jel impregnated foam cylinder is positioned adacent a surface of said means for covering and such that a moisture retaining region is formed within which said jel impregnated cylinder is located, said region is bounded in part by a region of said means for covering and a region of said disk,

said second layer of adhesive extends continuously on said first side of said plastic base liner completely across said plastic body member coextensive with at least a selected diameter of said circular plastic body member.

4. The EKG electrode according to claim 3 including further,

means for releasing, said means is adapted to be used to manually separate said plastic base liner from said circular plastic body member.

5. In a plurality of circular EKG electrodes removably formed along a line on a first side of a plastic base liner wherein a plurality of holes is formed in the base liner along the line, each electrode includes a body portion with an electrical connector affixed thereto and a jel impregnated foam cylinder with an end positioned adjacent a part of the electrical connector, each jel impregnated foam cylinder is positioned to extend in part through a respective one of the holes in the base liner, an improvement comprising:

a continuous strip of adhesive formed on an opposite side of the plastic base liner along the line, said strip of adhesive surrounds the members of the plurality of holes formed in the base liner along the line, and

continuous plastic means for covering, said means for covering is continuously and sealingly bonded by said continuous strip of adhesive to said opposite side of the base liner thereby forming a plurality of moisture retaining regions wherein the members of the plurality of foam cylinders are located, each said moisture retaining region is bounded by a part of said base liner, a part of said means for covering and a part of the circular electrode.

6. In a circular EKG electrode removably attached to a first side of a plastic base liner wherein the plastic base liner has a hole formed therein, the electrode includes a body portion with an electrical connector affixed thereto and a jel impregnated foam cylinder with an end positioned adjacent a part of the electrical connector, a part of the cylinder extends into the hole in the base liner, an improvement comprising:

a continuous layer of adhesive formed on an opposite side of the plastic base liner, said continuous layer of adhesive extends along a diameter from edge to edge of the circular EKG electrode and surrounds the hole in the base liner, and

moisture resistant means for covering, said means for covering is sealingly and continuously bonded to said opposite side of the plastic base liner by said continuous layer of adhesive, said means for covering includes planar sealing members which extend at least along the diameter to said edges of the electrode and cover completely said layer of adhesive such that a moisture retaining region is formed wherein the foam cylinder is located, said moisture retaining region is bounded by a part of said means for covering, a part of the base liner, and a part of the circular electrode.