Electromagnetic treatment therapy for stroke victim
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United States of America Patent
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-
Aug 15, 1995
Issued Date -
N/A
app pub date -
Oct 13, 1993
filing date -
Aug 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for therapeutically treating stroke is provided. The apparatus includes a magnetic field generator for producing a controlled, fluctuating, directionally oriented magnetic field parallel to a predetermined axis projecting through the patient's cerebral tissue. In one aspect, a field detector measures the magnetic flux density along the predetermined axis. The applied magnetic field may comprise a full-wave rectified signal oscillated at predetermined frequencies to maintain a preselected ratio of frequency to the effective flux density, where the ratio maintains tissue viability and reduces edema by controlling ion electrolyte balance. This ratio is maintained by adjusting the frequency of the fluctuating magnetic field and/or by adjusting the intensity of the applied magnetic field after nulling out the local magnetic field at that region containing the target cerebral tissue.
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