Sucked type wearable flexible MEG cap for measuring human brain magnetic field signals

Abstract

The invention discloses a sucked type wearable flexible MEG cap for measuring human brain magnetic field signals, belongs to the field of biomedical engineering, and relates to a medical instrument. The MEG cap consists of a flexible cap body and sucked type clamping grooves, wherein each sucked type clamping groove comprises a clamping groove, a sucker and a fixing bolt for connecting the clamping groove and the sucker; a grid MEG capable of arranging the sucked type clamping grooves in array is drawn on the surface of the flexible cap body in reference of an internationally general 10-20 standard EEG acquisition lead system and physiological construction and functional division of human brains; the flexible cap is made of a thermal insulation silicone material, can be attached to scalp of a testee closely, and guarantees the distance between low-intensity field measuring sensors inserted into the sucked type clamping grooves and the real scalp of the testee is the minimum as far as possible; and the flexible cap cooperates with the sucked type clamping grooves, can adapt any measurement positions of complex human head curved surfaces. The sucked type wearable flexible MEG cap isan MEG detection tool with higher universality, very low detection cost and reliability.

Description

technical field [0001] The invention belongs to the field of biomedical engineering and relates to a medical device, in particular to a suction cup-type wearable flexible magnetic brain cap for measuring magnetic field signals of human brains. Background technique [0002] Magnetoencephalography (MEG) is the latest medical diagnostic technology that can directly measure the brain's neural function activities completely non-invasively. It has been widely used to study the advanced functions of the brain and various difficult diseases of the nervous system. [0003] Clinically, in the treatment of intractable partial epilepsy, MEG can be used as an important reference for intracranial electrode embedding strategies. MEG can provide additional positioning information on the basis of routine non-invasive evaluation, thus having a positive impact on intracranial electrode implantation. Guiding role, improve the positioning accuracy of intracranial electrode EEG monitoring. [00...

AI Technical Summary

Problems solved by technology

At present, many atomic magnetometer research institutions at home and abroad, when measuring the magnetic field of the human head, customize personalized magnetic brain caps or helmets based on 3D printing technology to complete the magnetic field signal measurement of local or whole brain regions, design And the production cycle is long, and the cost is expensive; at present, almost no research institutions use flexible magnetic brain caps for experimental verification or measurement. Reliable MEG signal detection tool

[0007] The existing brain magnetometry device for medical testing, that is, SQUID, requires liquid helium to cool the working environment, high operating costs, complex devices, and high cost, and the installation of the sensor is far away from the scalp, which limits the use of this device range, and cannot achieve wearable design

[0008] Most of the existing magnetic brain caps used in scientific research environments are personalized magnetic brain caps based on 3D printing technology, that is, using a certain precision scanning device to scan the subject's head to obtain three-dimensional data, and then use 3D printing technology to complete the helmet cap Body printing, the card slots where the sensors are placed will be arranged in different brain areas or positions according to the differences in each experiment. Since the card slots are printed integrally with the helmet body, the cost of the experiment is relatively expensive and only one person can only be tested. In the current scientific research process, the layout of the card slots in the tested brain area is mostly based on empirical data to delineate the position, there is a certain error, and the position of the card slot is fixed and cannot be adjusted, which will lead to inaccurate data and detection costs. further improvement of

[0009] Princeton University in the United States used the MRI data of the subject's head to reconstruct the subject's scalp data, and then used the 3D printed helmet cap. The position of the brain area is relatively accurate, but the local card slots are too densely arranged to cause crosstalk between sensors. If The position of the card slot can be adjusted flexibly, which will facilitate the development of the experiment and further reduce the detection cost; the 3D printed helmet cannot be realized due to the difficult design of the curved surface structure of the human head, and the wall thickness of the fixed position card slot and the existence of inconsistent card slot intervals. Adjustment and measurement of any position of the subject's head

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