US Patent 9327136 Spiral magnetic vortex instrument

A magnetic device for magnetic therapy, the device comprising a magnetic drum having an inner surface and an outer surface, a plurality of permanent magnets, a hollow safety sleeve, and an electric motor for powering the magnetic device by means of a power source. The plurality of permanent magnets is positioned on the inner surface of the magnetic drum so as to form a helical pattern thereon. The magnetic drum is positioned in the hollow safety sleeve and connected to an output shaft of the electric motor by means of a plurality of bearings. The electric motor rotates the magnetic drum and the plurality of permanent magnets to produce an oscillating magnetic field for use in magnetic therapy.