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Cross coil for deep transcranial magnetic stimulation

A transcranial magnetic stimulation, cross-type technology, applied in the direction of using the magnetic field generated by the coil, magnetic therapy, electrotherapy, etc., can solve the problems of low stimulation depth and enhanced stimulation intensity, so as to increase the stimulation intensity and enhance the stimulation intensity , easy to construct effects

Pending Publication Date: 2022-03-18
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0005] Aiming at the deficiencies of the existing TMS technology, the present invention proposes a cross-shaped coil for deep transcranial magnetic stimulation, which uses a combination of a figure-eight coil and a Halo coil to solve the problem of low stimulation depth and enhance the tissue density of the cerebral cortex. Stimulation intensity without severe loss of focus

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  • Cross coil for deep transcranial magnetic stimulation
  • Cross coil for deep transcranial magnetic stimulation
  • Cross coil for deep transcranial magnetic stimulation

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Embodiment Construction

[0019] The transcranial magnetic stimulation cross coil of the present invention will be further described in detail with reference to the accompanying drawings.

[0020] The 8-shaped coil adopted in the present invention is Type9925 of Magstim Company, the inner diameter of the coil is 56 mm, the outer diameter is 87 mm, it is placed horizontally on the top of the brain scalp by 5 mm, and the number of coil turns is 9 turns. The inner radius of the Halo coil is 138mm, the outer radius is 150mm, and the coil turns are 6 turns. Among them, the 8-shaped coil and the Halo coil are wound with copper wires of the same size, and their cross-sectional area is 6mm*1.75mm.

[0021] figure 1 Based on the double-layer ball model, the specific structure and current direction of the cross-shaped coil when the Halo coil does not move upward are shown. The Halo coil is figure 1 The structure shown is the initial structure, always along the Figure 1 Move in the direction of the arrow, and...

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Abstract

The invention provides a crossed transcranial magnetic stimulation coil for improving stimulation depth, the coil is composed of an 8-shaped coil and a Halo coil, the Halo coil surrounds the short axis of the 8-shaped coil, and the upper boundary of the Halo coil is always above the center of the 8-shaped coil. The two parts of the 8-shaped coil are respectively connected with currents in opposite directions to generate a focusing magnetic field, the current direction of the upper boundary of the Halo coil is consistent with the current direction of the tangent position of the 8-shaped coil, and the advantage of stimulation depth is provided. The influence of the Halo coil on the 8-shaped coil is changed by changing the included angle and the distance between the Halo coil and the 8-shaped coil, so that the change relationship between the focusing property and the stimulation depth of the crossed coil is balanced. Based on evaluation standards, compared with an existing deep HFA stimulation coil, the deep HFA stimulation coil has higher stimulation intensity, smaller focusing area and better stimulation depth, and a novel tool with high potential is provided for transcranial magnetic stimulation research and treatment of deep brain dysfunction diseases.

Description

technical field [0001] The invention belongs to the technical field of transcranial magnetic stimulation, and in particular relates to a cross-type transcranial magnetic stimulation coil design which significantly improves the stimulation depth. Background technique [0002] As a non-invasive method of brain stimulation, Transcranial Magnetic Stimulation (TMS) is an important tool for studying the functional organization of the human brain and a powerful tool for treating mental illness. The TMS coil placed on the surface of the patient's head passes through an alternating current, which will generate a pulsed magnetic field that can pass through the scalp and skull, induce an induced electric field in the brain tissue, and then change the membrane potential of the cerebral cortex nerve cells. It can affect the excitability of the cortex and trigger a series of functional activities of brain neurons, so as to achieve the purpose of detecting and constructing functional brain...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N2/04
CPCA61N2/02A61N2/006
Inventor 熊慧李青宇刘近贞
Owner TIANJIN POLYTECHNIC UNIV
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