Electromagnetic positioning and navigation device for transcranial magnetic stimulator

Abstract

An electromagnetic positioning and navigation device for a transcranial magnetic stimulator is composed of an electromagnetic positioning and navigation module (1), a coil gesture control module (2), a three-dimensional seat (3), an image collection and processing module (4), an electromagnetic calculation module (5), a display module (6) and a transcranial magnetic stimulator coil (7). The electromagnetic positioning and navigation module (1) is connected with the coil gesture control module (2) and the three-dimensional seat (3), and the coil gesture control module (2) is installed on the transcranial magnetic stimulator coil (7). The image collection and processing module (4) can rebuild a three-dimensional head model of a patient in the image space to mark therapeutic targets. The electromagnetic positioning and navigation module (1) records space position and coil gesture of the head (8) of the patient and conducting alignment on head positions in the image space and the sensor space and the position of the transcranial magnetic stimulator coil (7). Induction field distribution of the head of the patient is displayed in the display module (6) by means of calculation of the electromagnetic calculation module (5).

Description

technical field [0001] The invention relates to a medical device, in particular to a positioning and navigation device for a magnetic stimulator. Background technique [0002] In the early 1980s, British scientists Baker and others began to study the use of magnetic stimulation to intervene in brain neural activity, and successfully stimulated the motor center of the human brain for the first time in 1985, and measured the motor cortical evoked potential (Motor- evoked potentials, MEPs). This also marks the entry of Transcranial Magnetic Stimulation (TMS) into the stage of history. With the development of high-power devices and the improvement of circuits, repetitive magnetic stimulators (Repetitive Transcranial Magnetic Stimulation, rTMS) appeared in the late 1980s, which can generate 1–100 pulses per second. According to the principle of electromagnetic induction, the magnetic stimulator releases the energy stored in the capacitor into the stimulating coil in a short tim...

AI Technical Summary

Problems solved by technology

The machine vision positioning and navigation system requires a positioning cap. The thickness of the positioning cap increases the distance between the coil and the cerebral cortex, increases the stimulation intensity, and causes a waste of energy, especially when transcranial magnetic stimulation and EEG recording are required at the same time. Positioning caps and EEG electrode caps will increase the distance between the coil and the cerebral cortex

In the optical positioning and navigation system, due to the obstruction of light by objects, high requirements are placed on the positions of optical sensors and light sources, which also limits the use of optical positioning systems to a certain extent.

Secondly, the existing navigation system does not display the distribution of the induced electric field on the head in real time, especially the direction information of the induced electric field

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