A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
326/1
A61N 1/40 (2006.01) A61N 1/08 (2006.01) A61N 2/02 (2006.01)
Patent
CA 1258494
ABSTRACT Disclosed are arrangements for sensing the rate of change of magnetic flux density of a medical treatment coil and automatically adjusting pulses of electrical energy provided to the coil so as to properly provide therapy. In one embodiment, a device includes a medical treatment coil, a pulse generator for producing pulses of electrical energy and supplying them to the coil, a sense coil for sensing the magnetic field produced by the coil, and a controller, responsive to the sensed magnetic field, for automatically generating a signal to the pulse generator circuitry to adjust the magnitude of the pulses. In another embodiment, the device includes first and second treatment coils and a multiplexer electrically connected to the coils for selecting either or both of the coils. One of the coils is activated by electrical pulses from a pulse generator, A controller, electrically connected to the multiplexer, selects the other coil for sensing the strength of the magnetic field (dB/dt) produced by the first coil and for, based upon the sensed magnitude, sending a signal to the pulse generator indicating the magnitude of electrical pulses to be provided to the first coil.
477881
Medtronic Inc.
Smart & Biggar
LandOfFree
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