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US 5,476,481 AGranted
Electrotherapy apparatus with superimposed AC fields
AssigneesRobert Ley, Ralf Scherer
InventorErhard Schondorf
Life of this patent
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Abstract
An electrotherapeutic field stimulator includes at least a pair of electrodes for applying the electricity to the body in the form of an electric field and a generator for providing the electricity to the electrodes in the form of at least two superimposed alternating current fields of different frequencies to provide the treatment waveform.
Claims18
Electrotherapy apparatus for treating tissue, said apparatus comprising
- electrodes between which tissue can be disposed for treatment,
- means for producing a first alternating field between said electrodes, said first alternating field having a frequency between 0.1 Hz and 5 Hz;
- and
- means for superimposing a second alternating field with a frequency of 1 to 100 Hz on said first field.
1 more element
Electrotherapy apparatus for treating tissue, said apparatus comprising
- electrodes between which tissue can be disposed for treatment,
- means for producing an electric field having a carrier frequency f.sub.t between said electrodes, said electric field having an amplitude,
- means for modulating said amplitude according to a modulation frequency f.sub.m of 1 to 100 Hz, and
- means for reversing the polarity of said electrodes according to a fundamental frequency f.sub.g of 0.1 to 5 Hz.
1 more element
Dependencies are inferred from the claim text.