Patent ID: 8406843

Claim:
An apparatus comprising: an electrode stud, the electrode stud having a first end, a second end and a diameter; an electrode element, the electrode element having a first surface and a second surface, the first surface being coupled to the first end of the electrode stud; a securing element, the securing element having an first surface and an opposed second surface, the securing element having a first aperture therethrough, the first aperture extending from first surface to the second surface; a groove, formed around the electrode stud diameter; a snap-cover, the snap-cover being coupled to the second surface of the securing element, the snap-cover having a second aperture therethrough; the second aperture of the snap-cover defining an edge wherein the edge is configured to engage the groove to effect the electrode stud being rotatably retained within the second aperture; abrading means coupled to the second surface of the electrode element for abrading the surface of the skin of the patient and contouring to the surface of the skin of the patient so as to maximize conductive surface contact with the skin and simultaneously prevent movement of the electrode element and said abrading means except on application of a sufficient amount of force to the electrode element; and wherein the electrode stud extends through the securing element first aperture and the snap-cover second aperture and is rotatably retained within the second aperture.