Magnetic therapeutic appliance and method for operating same

Details Magnetic therapeutic appliance and method for operating same Magnetic therapeutic appliance and method for operating same

A - Human Necessities

61

N

A61N 2/02 (2006.01)

Patent

CA 2628439

The invention relates to a therapeutic appliance for treating a patient with an electric field or a magnetic field. In known therapeutic appliances, resistance losses in the coils needed for the magnetic field lead to undesired warming of the therapeutic appliance. According to the invention, the energy of the coil (17) is carried off via a load resistor that can be arranged on the side away from an active area of the therapeutic appliance. Alternatively, or in addition to this, the energy of the coil (59) can be carried off via a return to the mains. Moreover, the invention proposes generating a magnetic field of variable magnitude with an oscillating circuit (59) which is cyclically, periodically or intermittently excited before oscillations can completely dissipate. Finally, the invention proposes the use of a magnetic core made of an iron powder.

L'invention concerne un appareil thérapeutique destiné au traitement d'un patient par un champ électrique ou un champ magnétique. Dans les appareils thérapeutiques connus, les pertes ohmiques dans les bobines nécessaires pour créer le champ magnétique entraînent un échauffement indésirable de l'appareil thérapeutique. Selon l'invention, l'énergie de la bobine (17) est évacuée par une résistance de charge qui peut être disposée en dehors de la plage d'action de l'appareil thérapeutique. En variante ou en supplément, il est prévu selon l'invention d'évacuer l'énergie de la bobine (59) en la réinjectant dans le réseau. En outre, on propose selon l'invention de créer un champ magnétique de niveau variable à l'aide d'un circuit oscillant (59) qui est excité cycliquement, périodiquement ou par intermittence avant que les oscillations puissent être complètement amorties. Enfin, on propose selon l'invention d'utiliser un noyau magnétique en poudre de fer.

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