Apparatus and method for the treatment and active massage of muscles, the apparatus comprising a generator arrangement providing a modulated alternating current with a medium-frequency carrier having a frequency comprised between 3000 Hz and 100,000 Hz, and an adjustable low modulating frequency of a fraction of 1 Hz, preferably both the carrier and the modulating currents being sinusoidal. Directly or after optional conversion to a polyphase current, a variable modulated current is supplied to ...

A system and method for interferential electrical current therapy wherein the region of beneficial interference may be positioned in the body of a patient by selectively controlling the electrical signal which is provided to each of two pairs of electrodes secured to the patient's body. Two electrical signals are provided which have frequencies that differ by a predetermined amount. The system comprises means for selectively amplifying, phase shifting, and mixing the second electrical signal wit...

A series of devices for medical, therapeutic and odontological treatments, which employ impulse-therapy or transcutaneous nervous electrostimulation as a means of physical, rational and non-invasive relaxation of specific muscle areas; the developed basic electrostimulating device consists of a triangular signal generator, followed by an amplifier, which is connected to a modulation controller. A squared signal generator is connected to a first stage conditioner which, in turn, is connected in p...

A device for electroanalgesia of patients' tissues comprises series connected a generator (1) of asymmetric pulses some of which at the generator output have longer duration so as to provide electroanalgesia of the patient's tissues, while other pulses have shorter duration so as to provide depolarization of the patient's tissues, a current regulator (2) and a current stabilizer (3) to which are connected electrodes (4, 5) for connection directly to the patient and to a means for exerting a ther...

Apparatus for alleviation of pain in a patient comprises a treatment head and a cabinet which houses driving and control circuitry for the treatment head. The treatment head has a central electrode and an outer electrode arranged concentrically with respect to the central electrode. The central electrode has a portion which extends inwardly and serves as a ferromagnetic core around which are wound two insulated coils. The driving and control circuitry produces pulses of electricity in one of the...

Circuit arrangement of magnetotherapeutic impulse device for treatment of inflammatory and degenerative illnesses such as spondylitis, e.g. Bechterew's disease, operating on the principle of a pulsatory magnetic field, the frequency and intensity of which can be adjusted within an wide range, enabling the operator the adjustment and control of treatments for a number of different treated sites.

An electrotherapeutic device for selectively providing iontophoretic or biphasic stimulation to electrodes for introducing iontophoretic substances and for delivering biphasic current to body tissue, comprising timing circuits (120, 270, 280) for providing preselected stimulation intervals, and circuits (10, 30, 50) for providing iontophoretic and biphasic stimulation (151, 152) to the electrodes in response to the timing circuits and a user actuated input (92). The timing circuits may provide a...

An electromagnetic device for modifying any of the growth, repair or maintenance processes in a predetermined local area of a living body by utilizing a signal having a symmetric waveform to excite a coil and thereby induce a magnetic field and at the same time manually or mechanically manipulating the coil so as to cause time variations in the spatial-orientation of the induced magnetic field with respect to the local area.

An independently rate-adjustable multiple channel controller-transmitter for a nerve stimulator to be used in conjunction with an implanted stimulation pulse output unit includes a rate generating circuit (40,41,43,44) for producing asynchronous trigger signals of independently adjustable rate and width, a transmitting circuit (46,47,48,49) for generating bursts of RF energy at separate frequencies in response to the trigger signals, and a rate control circuit (50) for preventing excitation of t...

In an exemplary embodiment, the simultaneous intensity control of the individual current circuits is to be effected while avoiding undesired intensity deviations in the current circuits such as occur because of nonuniformity of multiple potentiometers, for example. Expediently, the signal frequencies are digitally generated. According to the disclosure, in every output current circuit a transistor is connected-in, which is switched between a conducting and a nonconducting condition so that the c...