Abstract: A system and a method for therapeutic treatment of biological tissue using weak magnetic fields. In accordance with one embodiment, the system comprises: a magnetic field transducer for transducing electrical currents into magnetic fields; a sheet or disk made of high-permeability material and disposed on one side of the magnetic field transducer, but removable therefrom; and a current source coupled to the magnetic field transducer for supplying electrical current thereto. A magnetic beam produced by the interaction of the sheet of high-permeability material with a magnetic field produced by the magnetic field transducer has a profile which is a function of the composition, geometry and thickness of the high-permeability material. Preferably the high-permeability material has a relative permeability value greater than 10,000.

Abstract: A system and a method for therapeutic treatment of biological tissue using weak magnetic fields. In accordance with one embodiment, the system comprises: a magnetic field transducer for transducing electrical currents into magnetic fields; a sheet or disk made of high-permeability material and disposed on one side of the magnetic field transducer, but removable therefrom; and a current source coupled to the magnetic field transducer for supplying electrical current thereto. A magnetic beam produced by the interaction of the sheet of high-permeability material with a magnetic field produced by the magnetic field transducer has a profile which is a function of the composition, geometry and thickness of the high-permeability material. Preferably the high-permeability material has a relative permeability value greater than 10,000.

Abstract: A method and an apparatus for the treatment of cardiac arrhythmias using a weak pulsed magnetic field. A transducer that emits electromagnetic radiation of a prescribed frequency and peak intensity is placed on the patient's chest and, as a result, the weak electromagnetic field can cause activation, reactivation, inhibition or remodeling of electrophysiological change in cardiac tissue in an irradiated heart. This treatment method has wide application for use in patients who experience cardiac arrhythmia.

Abstract: A telephone system enabling prepayment for telephone calls, wherein special code and credit information is stored in memory in special exchanges and debited as the call progresses.