Slideway type wearable brain magnetic cap for measuring human brain magnetic field signals

A magnetic field signal, slide-type technology, applied in the field of biomedical engineering, can solve the problems of long design and production cycle of brain magnetic cap, easy deformation of flexible cap, signal distortion, etc., to achieve convenient magnetic signal processing and imaging, wide size range , the effect of reducing the cost of testing

Active Publication Date: 2020-02-04
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, and then complete the magnetic field signal measurement of local or whole brain regions. , the design and production cycle of the magnetocap is long and expensive
There are also research institutions that use flexible magnetic brain caps for experimental verification or measurement, but the flexible cap body is easy to deform, and after the extremely weak magnetic sensor is inserted into the slot on the flexible magnetic brain cap, in the actual measurement process, the extremely weak magnetic sensor is easy to be damaged by the outside world. The reason is shaking, which leads to different degrees of distortion in the measured signal

Method used

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  • Slideway type wearable brain magnetic cap for measuring human brain magnetic field signals
  • Slideway type wearable brain magnetic cap for measuring human brain magnetic field signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It is a structural diagram of a specific embodiment of a slideway-type wearable magnetic brain cap for measuring human brain magnetic field signals, (a) is a schematic structural diagram of a slideway-type magnetic brain cap body, and (b) is a fixed-position slot Schematic diagram of the structure, (c) is a schematic diagram of the structure of the telescopic card slot, and (d) is a schematic diagram of the structure of the long bolt and the arc-shaped piece.

[0025] In this example, if figure 1 As shown in (a), the slideway magnetic cap A is 5 to 7 centimeters larger in diameter than the human head, and the magnetic cap is nearly round, which facilitates the design and implementation of the slideway. It consists of a slideway-type magnetic cap body A and a retractable card slot B; the slideway-type magnetic cap body A is symmetrically divided into left and right parts, connected by three arc-shaped hinges C, and the cap body can be opened At a certain angle...

Embodiment 2

[0027] figure 2 It is a design diagram of a slideway type wearable magnetic brain cap body for measuring human brain magnetic field signals, (a) is a retractable card slot on the slideway type magnetic head cap body (b) is a schematic diagram of the position distribution of the functional regions of the human brain relative to the slide-type magnetic brain cap.

[0028] In this embodiment, the distribution of the slideway D of the slideway-type brain magnetic cap body A and the spacing design of the rectangular holes E on the slideway, in figure 2 In (b), the numbers 1, 2, 3 and 4 represent the frontal lobe, parietal lobe, temporal lobe and occipital lobe respectively, referring to the internationally accepted 10-20 standard EEG acquisition lead system and the human brain The physiological structure and functional division of the system make the retractable card slot B inserted into a pair of rectangular holes E on the slideway D, and the position of the retractable card sl...

Embodiment 3

[0030] In this embodiment, the slideway-type brain magnetic cap body A is completely printed by 3D printing technology. Three short cylinders K with a height of 10-15 mm or a diameter of 10 mm are designed on the base of the nose and the left and right ears. ~15 mm hemisphere, the position of the short cylinder K on the left and right ear side is different from the position of the two cylindrical bases F with internal thread on the left and right ear side, when using 3D printing software to make the slideway type magnetic brain cap When A data is modeled, the reference coordinate system will be established with these three short cylinders K as a reference, and the subsequent slideway D design will be completed under this coordinate system; After the upper rectangular hole E corresponds to the design of the number of retractable card slots B, the coordinates and directions of the retractable card slot B at any position on all slides D under the reference coordinate system establ...

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Abstract

The invention relates to a slideway type wearable brain magnetic cap for measuring human brain magnetic field signals, belongs to the field of biomedical engineering, and relates to a medical instrument. The slideway type wearable brain magnetic cap is composed of a slideway type brain magnetic cap body and a telescopic clamping groove; the left part and the right part of the cap body are connected through three arc-shaped hinges; a plurality of slideways are symmetrically distributed on the left and right parts of the cap body, and rectangular holes are designed in the slideways; cylindricalbases with threads inside are respectively arranged above the left ear side and the right ear side of a person; the telescopic clamping groove is composed of a fixed position clamping groove and a telescopic clamping groove body; distribution of the slideways and interval design of the rectangular holes are carried out by referring to an internationally universal 10-20 standard electroencephalogram acquisition lead system and physiological structures and functional partitions of human brains; and a reference coordinate system is established by taking three short cylinders on the nose root andthe left and right ear sides of a person as references, so that 3D data modeling is completed. The slideway type wearable brain magnetic cap is low in detection cost, high in practicability and capable of being used for efficiently measuring human brain magnetic field signals.

Description

technical field [0001] The invention belongs to the field of biomedical engineering and relates to a medical device, in particular to a slideway-type wearable 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. Unlike electrical signals, the propagation of magnetic signals is not affected by biological tissues. MEG will be 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 provide an important reference for the intracranial electrode embedding strategy, thereby providing a positive guidance for intracranial electrode placement and improving the positioning accuracy of intracranial electrode EEG monitoring . [0004] In the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/05A61B5/00
CPCA61B5/0042A61B5/055A61B5/6803A61B2576/026
Inventor 宁晓琳贾乐房建成
Owner BEIHANG UNIV
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