Intermediate frequency electrotherapy is the application of alternating current (including sine wave, pulse wave and modulated wave, etc.) with a frequency of 1kHz-100kHz for treatment and rehabilitation.
At present, in the physical therapy industry, intermediate frequency electrical therapy is mainly divided into equal amplitude intermediate frequency electrical therapy, low frequency modulation intermediate frequency electrical therapy and interference electrical therapy.
The purpose of modulating the intermediate frequency and interference current is to use the carrier as the intermediate frequency current and its strong penetrating power to send the modulated wave or interference wave into the human body to achieve the effect of deep treatment.