Apparatus for transcranial magnetic stimulation
AssigneeKnowledge Technologies, LLC
InventorJames R. Sawers
Life of this patent
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Abstract
A quadrupolar-solenoidal electro-magnet creates more nearly parallel field lines and a coaxial magnetic bias resulting in allowing deeper magnetic field penetration with reduced depth attenuation and greater focality than available with the commonly used Figure-8 dual toroidal magnets, thereby overcoming the trade-offs inherent in currently standard practice for transcranial magnetic stimulation magnetic field generation and the proposed transcranial magnetic stimulation coil designs. When quadrupole electro-magnets are used with solenoids, the axis of the electro-magnets can be focused at the target within the desired tissue and at greater depth.
Claims20
Apparatus, comprising:
- a magnetic quadrupole with pole pieces arranged in opposing pairs of pole pieces and with an axis perpendicular to the planes defined by the ends of said pole pieces;
- and
- a solenoid having an axis, said axis of said solenoid being co-axial with said axis of said magnetic quadrupole.
An apparatus, comprising:
- at least one magnetic quadrupole, a quadrupole of said at least one quadrupole having pole pieces arranged in opposing pairs of pole pieces and with an axis perpendicular to the planes defined by the ends of said pole pieces;
- and
- a solenoid having an axis, said axis of said solenoid being co-axial with said axis of said at least one magnetic quadrupole, said solenoid is positioned between said opposing pairs of pole pieces.
Dependencies are inferred from the claim text.