부산대학교 도서관

Magnetic stimulator coils having a definable region wherein magnetic field intensity is greater than at other regions of the coil are disclosed. The definable region is formed by one or more corners in a coil and/or by a higher concentration of windings in one region of the coil. Because the magnetic field produced at the definable region of the windings is higher than at other regions, the location where stimulation is to occur is better defined when the definable region of a coil formed in accordance with the invention is suitably positioned on the skin of a patient and energized by a suitable power source. Preferably, the windings are splayed because splayed winding stimulator coils are more efficient than concentrated winding stimulator coils. Efficiency is better because magnetic field intensity is reduced where windings are splayed due to a reduction in mutual inductance. A less intense magnetic field results in the need for less power to create the desired magnetic field in the region where the windings are more concentrated.