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US 4,907,601 AGranted
Electrotherapy arrangement
AssigneeEtama AG
InventorKuno Frick
Life of this patent
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Abstract
An electrotherapy arrangement comprises a carrier centrally carrying an inner electrode portion constituting one voltage pole around which outer electrode portions constituting the other voltage pole concentrally lie, and means for applying voltage alternately to the outer portions, comprising a current source and a switching device, whereby the nature of the current and the switching procedures can be adjusted as desired.
Claims25
An electrotherapy arrangement comprising:
- a current source;
- a switching means connected thereto;
- a carrier bearing an electrode array adapted to be connected to the switching means, the electrode array including at least first, second and third outer electrode portions constituting a pole of the array and arranged substantially in a circle and an inner electrode portion constituting the other pole of the electrode array and arranged substantially at the center of the circle, the switching means being operable to apply voltage to the outer electrode portions with one polarity alternately with a given frequency of switching-over from one said electrode portion to another while the inner electrode portion carries the other polarity;
- and means for varying the voltage of the current source and the switching-over frequency of the switching means.
1 more element
Dependencies are inferred from the claim text.