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Abstract

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 coils which produces magnetic field pulses having a force field which extends externally of the treatment head in the vicinity of the electrodes. These magnetic pulses induce in the other coil electric voltage pulses at the rise and fall of the magnetic pulses and these electric voltage pulses are conveyed to the electrodes. The combined magnetic and electric voltage pulses provides greater relief which lasts longer than either magnetic or electric fields applied alone.

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First Claim