Patent ID: 7668604

Claim:
A medical pad unit, comprising: a first section including a first electrically conductive outer layer impermeable to air and moisture and a first protected layer overlaying at least a major central portion of said first outer layer and exposing an outer perimeter of the first electrically conductive outer layer; and a second section including a second electrically conductive outer layer impermeable to air and moisture and a second protected layer overlaying at least a major central portion of said second outer layer and exposing an outer perimeter of the second electrically conductive outer layer; wherein said first section and said second section are folded against each other such that an exposed perimeter portion of said first protected layer touches an edge portion of said second protected layer; and said exposed perimeter of the first electrically conductive outer layer of said first section and said exposed perimeter of the second electrically conductive outer layer of said second section are sealed to each other to protect the first protected layer and second protected layer from the environment.