Abstract: For an apparatus for electrotherapeutic applications operating in the medium-frequency range between 1000 Hz and 100,000 Hz where, in relation to a body part to be treated, a circuit with medium-frequency current (MF current) is applied across two electrodes, the invention proposes to keep the amplitude of the MF current constant and to modulate the frequency by one thousand to several thousand Hz (corner frequencies) with a modulation frequency of >0 to several hundred Hz (for instance 200 Hz) in order to generate in synchronism with the modulation frequency action potentials in the treatment area.

Abstract: A device for the electrostimulation therapy of a type having at least one circuit with a pair of electrodes, a program memory and a control unit is provided with a microprocessor for producing desired curves and frequencies responsive to information and instructions from program memory and the control unit, an intermediate memory associated with the microprocessor for storing data in the form of instantaneous values representing the curves and frequencies, and address means for providing an output of the instantaneous values stored in the intermediate memory responsive to a demand from the microprocessor for information for providing a curve. The device can be adapted for electrical interference therapy such that the device has two separate circuits and two associated pair of electrodes. The adapted device has an intermediate memory, for storing instantaneous values, connected with each of the separate circuits.