Magnetic-resonance-coupling-principle-based quatrefoil-coil transcranial magnetic stimulation system

Abstract

The invention provides a magnetic-resonance-coupling-principle-based quatrefoil-coil transcranial magnetic stimulation system. A quatrefoil coil is formed by four same source coil-resonance coil blade unit groups. In the system, the first source coil and the second source coil are in an external tangent mode; the third source coil and the fourth source coil are in an external tangent mode; the first source coil and the third source coil are in an external tangent mode; and the second source coil and the fourth source coil are in an external tangent mode. The four source coils have internal diameters of 70mm and external diameters 80mm. The corresponding four groups of resonance coils and source coils are in a concentric manner. The four resonance coils have internal diameters of 30mm and external diameters of 40mm. The magnetic-resonance-coupling-principle-based quatrefoil-coil transcranial magnetic stimulation system has the following beneficial effects: when the source coils are electrified by currents with the intensities, the stimulus intensity on the encephalic affected part at the same depth is increased; the utilization rate of energy transmitted by the source coils to the head model is improve by more than twice; and while the energy utilization efficiency is improved and the excitation current intensity requirement is reduced, the stimulation depth can be strengthened and the accuracy of target stimulation can be improved.

Description

technical field [0001] The invention relates to transcranial magnetic stimulation technology, in particular to a four-leaf coil transcranial magnetic stimulation system based on the principle of magnetic resonance coupling. Background technique [0002] When electromagnetic fields act on organisms, certain biological effects will be produced, which is one of the development directions in the field of bioelectrical engineering. Transcranial Magnetic Stimulation (TMS) is a non-invasive biostimulation technology that uses a time-varying magnetic field to generate an induced electric field, causing bioelectric currents to be conducted in tissues, changing the action potential of neurons in the cerebral cortex, and affecting brain metabolism and neuroelectric activity. Since 1985, when Barker and others successfully used magnetic stimulation technology to stimulate the central nervous system of the cerebral cortex in the human body for the first time, TMS has attracted widespread...

AI Technical Summary

Problems solved by technology

As a common TMS stimulation source configuration, the traditional four-leaf coil has the advantage of improving the stimulation focus, but the stimulation penetration depth is reduced, and the stimulation efficiency is low. At the same time, it requires high power and High current, not conducive to home use of TMS

[0004] In 2015, in the application number 201510963482.5, the figure-eight coil transcranial magnetic stimulation system based on the magnetic resonance coupling principle, for the figure-eight coil transcranial magnetic stimulation system based on the magnetic resonance coupling principle, it can enhance the stimulation intensity and focus However, the stimulation target of the transcranial magnetic stimulation system is only one, and the stimulation efficiency is not high at the tangent point of the two source coils.

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