An apparatus for providing therapeutic electric current to a treatment site of a patient is disclosed, which provides two oscillating or pulsing electric alternating currents, of frequencies which differ from each other by as little as 1 Hz and up to about 250 Hz, but each being of frequency at least...http://www.google.ca/patents/US6792315?utm_source=gb-gplus-sharePatent US6792315 - Electro therapy method and apparatus
