Wearable brain electrical signal acquisition device

Abstract

This utility model relates to the field of EEG acquisition technology and discloses a wearable EEG acquisition device, including a wearing mechanism on which an EEG acquisition mechanism is mounted. The wearing mechanism includes two symmetrically arranged bearings, with multiple shaft holes equally spaced from front to back between the two side walls of the bearings. A mating shaft is rotatably connected within each shaft hole, and the same silicone adhesive strip is fixedly connected to one end of every two symmetrically arranged mating shafts facing each other. This utility model, through improved electrode design and contact method, uses a flexible silicone support for the electrode body and applies a conductive oleophobic silver coating to its outer side to reduce the influence of skin oil and sweat on electrode contact. Furthermore, by providing contact microneedles at the electrode tail end, it improves the electrical contact performance between the electrode and the scalp, enhancing the adhesion and stability of the electrode to the scalp.

Description

Technical Field

[0001] This utility model relates to the field of EEG acquisition technology, specifically a wearable EEG acquisition device. Background Technology

[0002] Wearable EEG acquisition devices are wearable devices used to measure brain electrical activity. They can be used for detecting depressive mood in depression, or for the diagnosis, monitoring, and rehabilitation assessment of neurological diseases such as epilepsy, Parkinson's disease, and Alzheimer's disease. For example, long-term monitoring of EEG signals helps doctors understand the progression of the disease and the effectiveness of treatment, providing a basis for developing personalized treatment plans. They can also be used to monitor rehabilitation training for stroke patients or patients with depression, enabling active rehabilitation therapy based on brain-computer interfaces.

[0003] Existing wearable EEG acquisition devices still have the following problems when in use: During prolonged wear, the contact between the electrodes and the scalp may become unstable due to factors such as hair, skin oil secretion, and head movement, which may affect the accuracy of signal acquisition, resulting in signal interruption or increased noise. In addition, the headband of some acquisition devices may cause pressure on the head, and in order to ensure good contact between the electrodes and the scalp, the acquisition device is usually worn in a relatively tight way, which may cause the scalp to be non-breathable and prone to sweating, making the user feel stuffy and uncomfortable. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a wearable EEG acquisition device, which solves the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wearable EEG acquisition device, comprising a wearing mechanism, wherein an EEG acquisition mechanism is mounted on the wearing mechanism, the wearing mechanism comprising two symmetrically arranged bearings, wherein multiple shaft holes are equidistantly opened between the two side walls of the bearings from front to back, wherein a mating shaft is rotatably connected within the shaft holes, and the same silicone adhesive strip is fixedly connected to one end of every two symmetrically arranged mating shafts facing each other, wherein multiple breathable micropores are opened between the inner and outer side walls of the silicone adhesive strip, and the silicone adhesive strip is arc-shaped with multiple through holes opened at equal angles between the upper and lower side walls in the middle portion.

[0008] As a further embodiment of this utility model: the EEG acquisition mechanism includes an electrode seat disposed in a through hole, an electrode body disposed at the bottom end of the electrode seat, the electrode body being a flexible silicone part, and a conductive oleophobic silver coating disposed on the outer side of the flexible silicone part, and a plurality of contact microneedles disposed at the end of the electrode body away from the electrode seat.

[0009] As a further embodiment of this utility model: a threaded sleeve is fixedly connected to the inner wall of the through hole, and a threaded groove matching the inner thread of the threaded sleeve is provided on the outer side of the electrode seat. Adjacent electrode seats are connected by a connecting line. Three electrode seats at one end are connected to a signal amplifier via a connecting line. An anti-interference transmitter is fixedly installed at the top of the signal amplifier in the middle. One end of the anti-interference transmitter is provided with an output interface, and the anti-interference transmitter is connected to the signal amplifiers on the front and rear sides via a transmission line.

[0010] As a further embodiment of this utility model: a wearing and fixing mechanism is provided at one end of the two said bearing seats. The wearing and fixing mechanism includes two sets of spring hinges fixedly connected at one end of the two bearing seats. Each set of spring hinges consists of two spring hinges arranged symmetrically front and back. An arc-shaped fixing clip is fixedly connected to the elastic rotating end of the spring hinge. A rubber-based anti-slip coating is provided on the outer side of the arc-shaped fixing clip.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, through the improved electrode design and contact method, a flexible silicone support electrode body is adopted, and a conductive oleophobic silver coating is provided on its outer side to reduce the influence of skin oil and sweat on electrode contact. Furthermore, by providing contact microneedles at the tail end of the electrode, the electrical contact performance between the electrode and the scalp is improved, thereby enhancing the fit and stability of the electrode with the scalp.

[0013] 2. In this utility model, by adopting an optimized headband structure design, based on ergonomic principles, three independently adjustable and rotating silicone adhesive strips are designed. Multiple electrode structures are assembled at equal angles on the silicone adhesive strips, reducing weight and pressure on the head. At the same time, due to the large spacing between two adjacent silicone adhesive strips and the multiple breathable micropores opened between the inner and outer side walls of the silicone adhesive strips, the ventilation conditions of the head are improved, reducing sweating and stuffiness, and improving wearing comfort. Attached Figure Description

[0014] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ;

[0015] Figure 2 The overall three-dimensional structure of this utility model Figure 2 ;

[0016] Figure 3 This is a perspective view of the wearing mechanism of this utility model;

[0017] Figure 4 This is a three-dimensional view of the electroencephalogram (EEG) acquisition mechanism of this utility model.

[0018] In the diagram: 1. Wearing mechanism; 2. EEG acquisition mechanism; 11. Shaft seat; 12. Shaft hole; 13. Spring hinge; 14. Arc-shaped fixing clip; 15. Matching shaft; 16. Silicone adhesive strip; 17. Through hole; 18. Threaded sleeve; 21. Electrode seat; 22. Electrode body; 23. Contact microneedle; 24. Signal amplifier; 25. Connecting line; 26. Anti-interference transmitter; 27. Transmission line. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figures 1-4In this embodiment of the present invention, a wearable EEG acquisition device includes a wearing mechanism 1, on which an EEG acquisition mechanism 2 is mounted. The wearing mechanism 1 includes two symmetrically arranged bearing seats 11. Multiple shaft holes 12 are equidistantly opened between the two side walls of the bearing seats 11 from front to back. A mating shaft 15 is rotatably connected within each shaft hole 12. The same silicone adhesive strip 16 is fixedly connected to one end of every two symmetrically arranged mating shafts 15 facing each other. Multiple breathable micropores are opened between the inner and outer side walls of the silicone adhesive strip 16. The silicone adhesive strip 16 is arc-shaped. Furthermore, multiple through holes 17 are opened at equal angles between the upper and lower side walls of the middle section. The overall headband structure is designed with an optimized design. Based on ergonomic principles, three independently adjustable and rotating silicone adhesive strips 16 are designed. Multiple electrode structures are assembled at equal angles on the silicone adhesive strips 16, which reduces weight and pressure on the head. At the same time, due to the large spacing between two adjacent silicone adhesive strips 16 and the multiple breathable micropores opened between the inner and outer side walls of the silicone adhesive strips 16, the ventilation conditions of the head are improved, reducing sweating and stuffiness, and improving wearing comfort.

[0023] The EEG acquisition mechanism 2 includes an electrode holder 21 disposed within a through hole 17. An electrode body 22 is disposed at the bottom of the electrode holder 21. The electrode body 22 is a flexible silicone component, and a conductive oleophobic silver coating is disposed on the outer side of the flexible silicone component. Multiple contact microneedles 23 are disposed at the end of the electrode body 22 away from the electrode holder 21. The overall improved electrode design and contact method use a flexible silicone component to support the electrode body 22 and a conductive oleophobic silver coating is disposed on its outer side to reduce the influence of skin oil and sweat on electrode contact. By disposing of contact microneedles 23 at the tail end of the electrode, the electrical contact performance between the electrode and the scalp is improved, and the adhesion and stability between the electrode and the scalp are enhanced.

[0024] A threaded sleeve 18 is fixedly connected to the inner wall of the through hole 17. A threaded groove matching the inner thread of the threaded sleeve 18 is provided on the outer side of the electrode holder 21. Adjacent electrode holders 21 are connected by a connecting line 25. The three electrode holders 21 at one end are connected to a signal amplifier 24 via the connecting line 25. An anti-interference transmitter 26 is fixedly installed at the top of the middle signal amplifier 24. An output interface is provided at one end of the anti-interference transmitter 26, and the anti-interference transmitter 26 is connected to the front and rear signal amplifiers 24 via a transmission line 27. The signal collected by the electrodes is very weak and needs to be amplified, filtered, and processed by the signal amplifier 24 to remove noise and enhance meaningful signals for subsequent analysis. The processed EEG data is transmitted to external devices such as smartphones, tablets, or computers for analysis and display through the output interface provided at one end of the anti-interference transmitter 26.

[0025] Two bearing seats 11 are provided with a wearing and fixing mechanism at one end. The wearing and fixing mechanism includes two sets of spring hinges 13 fixedly connected at one end of the two bearing seats 11. Each set of spring hinges 13 consists of two spring hinges and is arranged symmetrically front and back. The elastic rotating end of the spring hinge 13 is fixedly connected to an arc-shaped fixing clip 14. The outer side of the arc-shaped fixing clip 14 is provided with a rubber-based anti-slip coating, which can attach three silicone adhesive strips 16 to the patient's head and clamp the collector to the patient's head through a total of four arc-shaped fixing clips 14 on both sides.

[0026] The working principle of this utility model is as follows: Three silicone adhesive strips 16 can be attached to the patient's head, and the collector is secured to the patient's head by four arc-shaped fixing clips 14 on both sides. When neurons in the brain are active, they will generate potential changes and form nerve signals. When these nerve signals are transmitted to the scalp surface, they will generate a weak potential difference. The wearable EEG collector records these potential changes by placing an electrode array on the scalp, thereby obtaining information on the brain's electrical activity. The signals collected by the electrodes are very weak and need to be amplified, filtered, and feature extracted by the signal amplifier 24 to remove noise and enhance meaningful signals for subsequent analysis. The processed EEG data is transmitted to external devices such as smartphones, tablets, or computers for analysis and display through the output interface of one end of the anti-interference transmitter 26.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wearable EEG acquisition device, comprising a wearing mechanism (1), wherein an EEG acquisition mechanism (2) is mounted on the wearing mechanism (1). characterized in that The wearing mechanism (1) includes two symmetrically arranged bearing seats (11), and multiple shaft holes (12) are provided between the two side walls of the bearing seats (11) at equal intervals from front to back. A wearing fixing mechanism is provided at one end of each of the two bearing seats (11). A mating shaft (15) is rotatably connected inside the shaft hole (12). The same silicone adhesive strip (16) is fixedly connected to one end of each pair of symmetrically arranged mating shafts (15). Multiple breathable micropores are opened between the inner and outer side walls of the silicone adhesive strip (16). The silicone adhesive strip (16) is arc-shaped and multiple through holes (17) are opened at equal angles between the upper and lower side walls in the middle. The EEG acquisition mechanism (2) includes an electrode seat (21) disposed in a through hole (17). An electrode body (22) is disposed at the bottom of the electrode seat (21). The electrode body (22) is a flexible silicone part, and a conductive oleophobic silver coating is disposed on the outside of the flexible silicone part. Multiple contact microneedles (23) are disposed at the end of the electrode body (22) away from the electrode seat (21). 2.The wearable EEG collector of claim 1, wherein: The inner wall of the through hole (17) is fixedly connected to a threaded sleeve (18), and the outer side of the electrode seat (21) is provided with a threaded groove that matches the inner thread of the threaded sleeve (18). 3.The wearable EEG collector of claim 1, wherein: The adjacent electrode holders (21) are connected by a connecting line (25), and the three electrode holders (21) at one end are connected to a signal amplifier (24) via the connecting line (25).

4. The wearable EEG collector of claim 3, wherein: An anti-interference transmitter (26) is fixedly installed at the top of the signal amplifier (24) in the middle section.

5. The wearable EEG acquisition device of claim 4, wherein: The anti-interference transmitter (26) has an output interface at one end, and the anti-interference transmitter (26) is connected to the front and rear signal amplifiers (24) via a transmission line (27).

6. A wearable EEG acquisition device according to claim 1, characterized in that: The wearing and fixing mechanism includes two sets of spring hinges (13) that are fixedly connected at one end of two bearings (11).

7. A wearable EEG acquisition device according to claim 6, characterized in that: Each set of spring hinges (13) consists of two spring hinges arranged symmetrically front and back. The elastic rotating end of the spring hinge (13) is fixedly connected to an arc-shaped fixing clip (14), and the outer side of the arc-shaped fixing clip (14) is provided with a rubber-based anti-slip coating.

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