Skin electrode

• US 3,967,628 A
• Filed: 02/03/1975
• Issued: 07/06/1976
• Est. Priority Date: 02/21/1974
• Status: Expired due to Term

• Current Assignee: Honeywell BV (Honeywell International Inc.)
• Original Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Inventors: Vredenbregt, Jakob
• Primary Examiner(s): Michell, Robert W.
• Assistant Examiner(s): Cohen, Lee S.
• Application Number:
  US05/546,795
• Time in Patent Office: 519 Days
• Field of Search: 128/417, 128/418, 128/416, 128/404, 128/410, 128/411, 128/2.06 E, 128/2.1 E, 128/DIG. 4, 128/172.1
• US Class Current: 607/149
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/256 Wearable electrodes, e.g. having straps or bands
• CPC Class Codes: A61N 1/0456 Specially adapted for transcutaneous electrical nerve stimulation [TENS]
• CPC Class Codes: A61N 1/048 Electrodes characterised by a specific connection between lead and electrode
• CPC Class Codes: A61N 1/0492 Patch electrodes A61N1/0412, A61N1/0428 take precedence

Abstract

A skin electrode, comprising a core provided with a pointed portion which projects through an opening in a jacket which is made of a flexible, non-slipping material and which has an integral flat edge. Because of its shape and the material properties, the electrode can be applied on the skin under a comparatively low pressure without sliding.

Claims

1. A skin electrode comprising

a jacket of flexible insulating material having a central portion and a peripherally extending flat edge portion about said central portion for non-slipping contact with skin;

an electrically conductive core extending through the central portion of said jacket and held thereby, said core having at one end a generally conically shaped pointed portion, an apical portion thereof protruding out of the plane of said flat edge portion of said jacket and pointing perpendicularly away therefrom, said core having means for making electrical contact thereto at the other end thereof; and

spongy absorbent material covering at least said apical portion of said core, said jacket having a tapered annular flange extending from said central portion and surrounding said conically shaped portion of said core to leave a space therebetween, the peripheral region of said spongy material being received and held in said space between the flange and the conically shaped portion of said core, said annular flange forming a hole through which said spongy material covering said apical portion protrudes for contact with skin.

2. A skin electrode as defined in claim 1 wherein the material of said jacket is silicon rubber.

3. A skin electrode as defined in claim 1 wherein the surface of said flat edge portion of said jacket on the side where said spongy material protrudes is rough for non-slipping contact with skin.

4. A skin electrode as defined in claim 1 and further comprising an elastic band means for pressing said jacket against the skin of a patient.