An electrically-powered device assembly designed to stimulate peripheral nerves through the transcutaneous application of two currents of slightly different frequencies (e.g., 4000 and 4100 Hz) that cross-over/interfere, producing a beating frequency (i.e., difference between the frequencies of both stimuli) at the treatment point. It typically consists of an external pulse generator and a set of electrodes placed in position to produce the interference at the desired point. The system is used mainly to relieve/manage intractable pain; some include additional electrodes to provide other types of electrical stimuli or suction for therapeutic massage.
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