TRANSCRANIAL MAGNETIC STIMULATION FIELD SHAPING
First Claim
1. A Transcranial Magnetic Stimulation (TMS) system for stimulating a subject'"'"'s neuronal tissue configured for shaping the emitted magnetic field to modulate a brain target, the system including:
- a primary TMS electromagnet configured to apply TMS to the subject; and
a plurality of secondary TMS electromagnets, each configured to apply TMS to the subject and to shape the magnetic field emitted by the primary TMS electromagnet, wherein the secondary TMS electromagnets are configured for stimulation at a lower power than the primary TMS electromagnet to emit a magnetic field that is concurrent with and shapes the magnetic field emitted by the primary TMS electromagnet.
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Accused Products
Abstract
Described herein are Transcranial Magnetic Simulation (TMS) systems and methods of using them for emitting focused, or shaped, magnetic fields for TMS. In particular, described herein are arrays of TMS electromagnets comprising at least one primary (e.g., central) TMS electromagnet and a plurality of secondary (e.g., lateral or surrounding) TMS electromagnets. The secondary TMS electromagnets are arranged around the primary TMS electromagnet(s), and are typically configured to be synchronously fired with the primary TMS electromagnets. Secondary TMS electromagnets may be fired at a fraction of the power used to energize the primary TMS electromagnet to shape the resulting magnetic field. The secondary TMS electromagnets may be stimulated at opposite polarity to the primary TMS electromagnet(s). Focusing in this manner may prevent or reduce stimulation of adjacent non-target brain regions.
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Citations
23 Claims
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1. A Transcranial Magnetic Stimulation (TMS) system for stimulating a subject'"'"'s neuronal tissue configured for shaping the emitted magnetic field to modulate a brain target, the system including:
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a primary TMS electromagnet configured to apply TMS to the subject; and a plurality of secondary TMS electromagnets, each configured to apply TMS to the subject and to shape the magnetic field emitted by the primary TMS electromagnet, wherein the secondary TMS electromagnets are configured for stimulation at a lower power than the primary TMS electromagnet to emit a magnetic field that is concurrent with and shapes the magnetic field emitted by the primary TMS electromagnet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A Transcranial Magnetic Stimulation (TMS) system for stimulating a subject'"'"'s neuronal tissue, the system including:
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a primary TMS electromagnet configured to apply Transcranial Magnetic Stimulation to the subject; and at least one secondary TMS electromagnet configured to shape the magnetic field emitted by the primary TMS electromagnet, and the secondary TMS electromagnet is configured for stimulation at a lower power than the primary TMS electromagnet to emit a magnetic field that is of opposite polarity and is concurrent with and shapes the magnetic field emitted by the primary TMS electromagnet.
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13. A Transcranial Magnetic Stimulation (TMS) system for stimulating a subject'"'"'s neuronal tissue, the system including:
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a primary TMS electromagnet configured to apply Transcranial Magnetic Stimulation to the subject; a plurality of secondary TMS electromagnets configured to shape the magnetic field emitted by the primary TMS electromagnet, wherein the secondary TMS electromagnets are configured be stimulated at a lower power and to emit a magnetic field that is opposite in polarity and concurrent with the magnetic field emitted by the primary TMS electromagnet, and wherein the primary TMS electromagnet is configured to be positioned between the secondary TMS electromagnets around the patient'"'"'s head. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A device for performing TMS comprising
a primary TMS electromagnet configured to apply Transcranial Magnetic Stimulation to a subject; -
a plurality of secondary TMS electromagnets arranged around the primary TMS electromagnet and configured to shape the magnetic field emitted by the primary TMS electromagnet, wherein the secondary TMS electromagnets are configured to emit a magnetic field that is opposite in polarity and concurrent with the magnetic field emitted by the primary TMS electromagnet; and a frame configured to secure the primary and secondary TMS electromagnets in position around a subject'"'"'s head so that the primary TMS electromagnet is between the secondary TMS electromagnets around the subject'"'"'s head. - View Dependent Claims (20)
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21. A method of performing Transcranial Magnetic Stimulation (TMS) of target deep brain structures by shaping the field emitted by a primary TMS electromagnet, the method comprising:
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positioning a primary TMS electromagnet between a plurality of secondary TMS electromagnets around a subject'"'"'s head; shaping the magnetic field emitted by the primary TMS electromagnet to modulate a deep brain target by simultaneously emitting a magnetic field from the primary TMS electromagnet and each of the plurality of secondary TMS electromagnets, wherein the energy applied to each of the secondary TMS electromagnets is less than the energy applied to the primary TMS electromagnet. - View Dependent Claims (22, 23)
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Specification