Reverse coil for transcranial magnetic simulation and design method thereof

A reverse coil and coil technology, applied in the direction of using the magnetic field generated by the coil, magnetic therapy, electrotherapy, etc., can solve the problem of scalp discomfort of patients, and achieve the effect of weakening and reducing the intensity of the electric field

Inactive Publication Date: 2018-12-18
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above patents use different stimulation coils to improve focus. In clinical applications, when the current in the stimulation coil is large, the scalp will generate a greater electromagnetic field intensity, which will cause discomfort to the patient's scalp to varying degrees.

Method used

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  • Reverse coil for transcranial magnetic simulation and design method thereof
  • Reverse coil for transcranial magnetic simulation and design method thereof
  • Reverse coil for transcranial magnetic simulation and design method thereof

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Embodiment Construction

[0021] The reverse coil for transcranial magnetic stimulation of the present invention will be further described in detail with reference to the accompanying drawings.

[0022] The eight-shaped coil adopted in the present invention is Type 9925 of Magstim Company, and the inner and outer diameters of the coil are 56mm and 87mm respectively, and are located 5mm above the head. The inner and outer diameters of the reverse coil are 25mm and 56mm respectively. The eight-shaped coil and the reverse coil winding are made of copper wire, the cross-sectional area is 6mm×1.75mm, and the number of coil turns is 9 turns.

[0023] The schematic diagram of the structure of the eight-shaped coil and the reverse coil and the direction of the current is as follows: figure 1 shown. The reverse coil consists of two circular coils with variable angles and heights. The reverse coil is located above the figure-eight coil and coincides with the center of the figure-eight coil in space. Reverse ...

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Abstract

The invention provides a reverse coil for transcranial magnetic simulation. The reverse coil is arranged above a reversed-V-shaped coil and is spatially superposed with the center of the reversed-V-shaped coil. The current direction of a circular coil at each side of the reverse coil is opposite from the current direction of the circular coil of the reversed-V-shaped coil at the same side, so thatthe direction of the electric field which is generated by the reverse coil is opposite from the direction of the electric field generated by the reversed-V-shaped coil, thereby effectively reducing the electric field strength at a scalp. The included angle of the reverse coil is changeable, and the height to the upper part of a head is changeable. Through changing the included angle, the height,the internal diameter and the external diameter of the reverse coil, the magnitude of an attenuation effect to the scalp can be changed, and furthermore the focusing performance of the reversed-V-shaped coil is improved.

Description

technical field [0001] The invention belongs to the field of transcranial magnetic stimulation, and in particular relates to a design of a reverse coil capable of reducing the electric field intensity at the scalp while improving the focus of a figure-eight coil. Background technique [0002] Transcranial magnetic stimulation (TMS) is a non-invasive and painless green treatment technology. The stimulating coil placed above the head generates a changing magnetic field, and through electromagnetic induction, the changing magnetic field generates an induced electric field to stimulate the brain nerves to achieve therapeutic purposes. In transcranial magnetic stimulation, in order to stimulate accurately, the electromagnetic field strength, stimulation depth and focus produced by the coil need to meet certain requirements. [0003] Compared with the circular coil, the figure-of-eight coil has improved focus, but the stimulation range is larger, the pertinence is not strong, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N2/04
CPCA61N2/006A61N2/02
Inventor 熊慧连璐刘近贞
Owner TIANJIN POLYTECHNIC UNIV
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