| United States Patent | 4,889,526 |
| Rauscher , et al. | December 26, 1989 |
Non-invasive method and apparatus for modulating brain signals through an external magnetic or electric field to reduce pain
AbstractThis invention incorporates the discovery of new principles which utilize magnetic and electric fields generated by time varying square wave currents of precise repetition, width, shape and magnitude to move through coils and cutaneously applied conductive electrodes in order to stimulate the nervous system and reduce pain in humans. Timer means, adjustment means, and means to deliver current to the coils and conductive electrodes are described, as well as a theoretical model of the process. The invention incorporates the concept of two cyclic expanding an collapsing magnetic fields which generate precise wave forms in conjunction with each other to create a beat frequency which in turn causes the ion flow in the nervous system of the human body to be efficiency moved along the nerve path where the locus of the pain exists to thereby reduce the pain. The wave forms are create either in one or more coils, one or more pairs of electrodes, or a combination of the two.
| Inventors: | Rauscher; Elizabeth A. (San Leandro, CA), Van Bise; William L. (San Leandro, CA) |
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| Assignee: | Magtech Laboratories, Inc. (Reno, NV) |
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| Appl. No.: | 07/120,914 |
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| Filed: | November 13, 1987
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