Apparatus for performing deep brain stimulation with a high frequency electric field
First Claim
1. An apparatus for performing deep brain stimulation with an electromagnetic field, the apparatus including an electrode assembly having multiple electrodes and a phased array system for driving the electrodes to generate the electromagnetic field, wherein the phased array system generates a high frequency sinusoidal signal for supply to the multiple electrodes, wherein the phase of the signal is staggered between different electrodes to steer the electromagnetic field.
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Abstract
One embodiment of the invention provides a method and apparatus for performing deep brain stimulation with an electromagnetic field. The includes an electrode assembly having multiple electrodes and a phased array system for driving the electrodes to generate the electromagnetic field. By controlling delays within the phased array system, the generated electromagnetic field can be steered to a desired region of the brain.
15 Citations
13 Claims
- 1. An apparatus for performing deep brain stimulation with an electromagnetic field, the apparatus including an electrode assembly having multiple electrodes and a phased array system for driving the electrodes to generate the electromagnetic field, wherein the phased array system generates a high frequency sinusoidal signal for supply to the multiple electrodes, wherein the phase of the signal is staggered between different electrodes to steer the electromagnetic field.
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9. The apparatus of claim 7, wherein the on portion of the duty cycle has a period in the range 1-100 μ
- s.
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10. The apparatus of claim 1, wherein the phased array system is controllable such that the phased array system can vary the phase shift between adjacent electrodes from zero up to a predetermined maximum.
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11. The apparatus of claim 10, wherein said predetermined maximum is π
- /2.
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12. The apparatus of claim 1, wherein the phased array system includes a delay element for each electrode.
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13. The apparatus of claim 1, wherein electronics for the phased array system in use are adapted for location at least partly with the electrodes in the skull of the subject.
Specification