Ion pumping cords are used in specialized techniques developed by Dr. Manaka of Japan for Eight Extra Meridian and other special treatments.
Proprietary, highly sensitive Germanium diodes within the connecting wires allow the body'spotential current energy to flow only in one direction, thus balancing ionic flows and concentrations.
More information on the use and applications of Ion Pumping may be found on page 120 of the book Chasing the Dragon's Tail: The Theory and Practice of Acupuncture in the Work of Yoshio Manaka.