US 12,420,108 B2
Magnetic stimulation device
Hitoshi Mori, Miyagi (JP); Kenji Yashima, Miyagi (JP); Hitoshi Kagaya, Aichi (JP); and Shinichi Izumi, Miyagi (JP)
Assigned to IFG CORPORATION, Miyagi (JP)
Appl. No. 17/614,959
Filed by IFG CORPORATION, Miyagi (JP)
PCT Filed Jan. 8, 2020, PCT No. PCT/JP2020/000257
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2021/140585, PCT Pub. Date Jul. 15, 2021.
Prior Publication US 2022/0249858 A1, Aug. 11, 2022
Int. Cl. A61N 2/02 (2006.01); A61N 2/00 (2006.01); H01F 7/20 (2006.01); H01F 27/02 (2006.01); H01F 27/08 (2006.01); H01F 27/245 (2006.01); H01F 27/28 (2006.01)
CPC A61N 2/02 (2013.01) [A61N 2/006 (2013.01); H01F 27/025 (2013.01); H01F 27/085 (2013.01); H01F 27/245 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A magnetic stimulation device comprising:
a magnetic core including: a core body; and first and second legs extending in one direction from the core body;
conductors including:
a conductor that is wound around the first leg in a coil shape; and
a conductor that is wound around the second leg in a coil shape; and
a casing that houses the magnetic core and the conductors, wherein
the first and second legs each are configured to have such a shape that a distance between opposite medial surfaces of the legs gradually increases from bases of the legs near the core body to tips of the legs, and thereby the first and second legs each have such a shape that each cross-sectional area of the legs parallel to a plane passing horizontally through both of the legs gradually decreases from the bases to the tips so that a leakage of magnetic flux between magnetic poles from the medial surfaces of the tips is reduced, and
each of the conductors is wound around each area of the legs, and each area is configured to have the shape that the distance between the opposite medial surfaces of the legs gradually increases.