Overlapping Multi-Coil TMS Fields for Deeper Brain Targeting

The patent divides the single coil into multiple separate coils (first coil, second coil, third coil) that can be independently positioned on different locations of the patient's body part. Each coil generates its own magnetic field, and the combined effect achieves stronger field strength at deep brain targets while reducing intolerance and discomfort compared to a single conventional coil.

The patent applies local quality by positioning multiple coils at different locations on the patient's body part, with each coil optimized for a specific target region. The first coil targets one brain region, the second coil targets another region, and the third coil targets a third region. This localized approach allows precise targeting of deep brain structures while minimizing exposure of non-target tissues to strong magnetic fields, thereby reducing localized discomfort.

The patent segments the magnetic field generation into multiple independent coils positioned at different locations. This allows the treatment system to bypass ferromagnetic materials that may be present in the patient's body (such as pacemakers, skull plates, or shrapnel) by routing magnetic fields through alternative paths that do not intersect with these contraindicated materials, thereby enabling treatment in patients who would otherwise be excluded from conventional single-coil TMS.

The patent divides the high current requirement into multiple lower currents generated by separate coils. Instead of using a single coil with very high amplitude currents to achieve deep penetration, the system uses multiple coils each generating moderate currents. This segmentation reduces the electrical stress on individual coils, minimizing wear and extending coil lifespan, while still achieving the desired deep brain penetration through the combined magnetic fields of all coils.