DISPOSABLE MEDICAL ELECTRODE

• US 3,828,766 A
• Filed: 08/14/1972
• Issued: 08/13/1974
• Est. Priority Date: 08/14/1972
• Status: Expired due to Term

• Current Assignee: David L. Krasnow
• Original Assignee: David L. Krasnow
• Inventors: Krasnow, David L.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Cohen, Lee S.
• Application Number:
  US05/280,350
• Time in Patent Office: 729 Days
• Field of Search: 128/2.6E,2.1E,DIG.4,418,417,416,404,405,410,411 204/155B
• US Class Current: 600/391
• 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 5/265 containing silver or silver chloride
• CPC Class Codes: A61B 5/266 containing electrolytes, conductive gels or pastes

Abstract

A disposable medical electrode comprising a support member made of a closed cell plastic material having an adhesive surface. A centrally located contact element is embedded therein so as to leave an exposed portion thereof at the adhesive side of the support member. A smaller pad member made up of an open cell plastic material is adhered to the adhesive surface of the support member at a position opposite to and in contact with the exposed portion of the contact element. In use, the pad member has a conductive gel dispersed throughout so that when the electrode is placed against the skin of a patient a good conductive path is present from the skin through the gelled pad to the contact element.

Claims

1. A monitoring electrode comprising a substantially flat support member formed of plastic foam material having a closed cellular configuration throughout, one surface of which is adhesive;

a contact element embedded in said support member, a first contact portion thereof being exposed at said one surface and a second contact portion thereof protruding from the opposite surface of said support member;

a pad member formed of plastic foam material having an open cellular configuration adhered to said adhesive surface of said support member at a position such that the inner surface of said pad member is in contact with and substantially covers said exposed portion of said contact element, the outer surface thereof being capable of contacting a surface to be monitored.

2. A monitoring electrode in accordance with claim 1 and further including a conductive gel being dispersed throughout said pad member when said monitoring electrode is in use to provide a conductive path from said outer surface of said pad member to said second contact portion.

3. A monitoring electrode in accordance with claim 2 and further including a plastic strip adhered to a portion of said opposite surface of said support member to impart greater rigidity to said opposite surface than to said one surface thereof.

4. A monitoring electrode in accordance with claim 2 wherein the thickness of said support member is in a range from about 1/32 inch to about 3/16 inches.

5. A monitoring electrode in accordance with claim 4 wherein the thickness of said support member is about 1/16 inch.

6. A monitoring electrode in accordance with claim 2 wherein the thickness of said pad member is in a range from about 1/32 inch to about 3/32 inches.

7. A monitoring electrode in accordance with claim 6 wherein the thickness of said pad member is about 1/16 inch.

8. A monitoring electrode in accordance with claim 2 wherein said support member is substantially circular in configuration and has a diameter in a range from about 1 inch to about 2.25 inches.

9. A monitoring electrode in accordance with claim 8 wherein said support member is substantially circular in configuration and has a diameter of about 1 3/8 inches.

10. A monitoring electrode in accordance with claim 8 wherein said pad member is substantially circular in configuration and has a diameter in a range from about 11/16 inches to about 13/16 inches.

11. A monitoring electrode in accordance with claim 10 whereiN said pad member is substantially circular in configuration and has a diameter of about 3/4 inches.