Magnetic stimulation method with controllable induced field direction

Patent metadata

Field	Value
Publication number	US-12478796-B2
Application number	US-202217694812-A
Country	US
Kind code	B2
Filing date	Mar 15, 2022
Priority date	Oct 26, 2021
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

The disclosure discloses a magnetic stimulation method with a controllable induced field direction, and belongs to the technical field of noninvasive neural regulation. The method includes the following steps: S 100 , determining currents i 1j , i 2j , i 3j , j=1, 2, . . . , n required to respectively generate unit vector electric fields at a target point P t , when the currents i 1j , i 2j , i 3j , are respectively applied through a coil j of a magnetic stimulation coil group, n≥3 and n being an integer; S 200 , decomposing an electric field E required at the target point P t to three electric field components E 1 , E 2 , E 3 ; S 300 , calculating currents I 1j , I 2j , I 3j that respectively generate the electric field components E 1 , E 2 , E 3 at the target point P t , I 1j =E 1 i 1j , I 2j =E 2 i 2j , I 3j =E 3 i 3j ; S 400 , generating the electric field E at the target point P t by applying a current I j =I 1j +I 2j +I 3j =E 1 i 1 +E 2 i 2 , I 3j +E 3 i 3 ; through the coil j, j=1, 2, . . . , n.

First claim

What is claimed is:

1 . A method, comprising:
S 100 , determining currents i 1j , i 2j , i 3j , j=1, 2, . . . n required to respectively generate unit vector electric fields at a target point P t , when the currents i 1j , i 2j , i 3j , are respectively applied through a coil j of a magnetic stimulation coil group, n≥3 and n being an integer; S 200 , decomposing an electric field E required at the target point P t to three electric field components E 1 , E 2 , E 3 ; S 300 , calculating currents I 1j , I 2j , I 3j that respectively generate the electric field components E 1 , E 2 , E 3 at the target point P t , I 1j =E 1 i 1j , I 2j =E 2 i 2j , I 3j =E 3 i 3j ; S 400 , generating the electric field E at the target point P t by applying a current I j =I 1j +I 2j +I 3j =E 1 i 1j +E 2 i 2j +E 3 i 3j through the coil j, j=1, 2, . . . , n.

2 . The method according to claim 1 , wherein the electric field components E 1 , E 2 , E 3 are mutually orthogonal.

Assignees

• Harbin Inst Technology

Inventors

• Pan Donghua
• Wang Jinting
• Wang Yiding
• Zhai Jiayu
• Chen Yanlu
• Li Liyi

Classifications

• A61N2/006

  for magnetic stimulation of nerve tissue · CPC title

• A61N2/02 Primary

  using magnetic fields produced by coils, including single turn loops or electromagnets (A61N2/12 takes precedence) · CPC title