Brain electrode base and electroencephalogram cap
By setting a conductive paste contact cavity and injection port in the base of the brain electrode, combined with silicone sleeve fixation and electrode wire constraint, the problem of cumbersome wet electrode application operation is solved, the accuracy and efficiency of brain electrode monitoring are improved, and the workload of operators and the discomfort of patients are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, wet electrodes require a cumbersome process of applying conductive paste before use, which leads to displacement of the brain electrode position and deviation in monitoring results, and is also inefficient.
A brain electrode base is designed, which includes a first cavity inside a fixing component and an injection port at the top. Conductive paste contacts the brain electrode through the first cavity. An installation part is set off-axis at the lower end of the fixing component to prevent interference from the flow of conductive paste. An accommodating groove is provided on the outer periphery to constrain the electrode wire. A silicone sleeve contacts the skin to provide cushioning. A trumpet-shaped second cavity fixes the position.
This technology enables conductive paste to contact the brain electrodes without moving the base of the brain electrodes, improving monitoring accuracy, simplifying operation, preventing electrode wire tangling, reducing discomfort, and ensuring the accuracy and stability of the brain electrode position.
Smart Images
Figure CN224085330U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of brain electrode technology, and in particular relates to a brain electrode base and brain electroencephalogram (EEG) cap. Background Technology
[0002] Electroencephalograms (EEGs), devices used to record and monitor human brain electrical activity, have wide applications in clinical and research fields. By transmitting the monitored electrical signals to an electroencephalogram (EEG), EEGs generate an electroencephalogram (EEG), providing doctors with important information for disease diagnosis and treatment.
[0003] Among EEG electrodes, wet electrodes are favored due to their superior signal quality. Wet electrodes reduce the impedance between the electrode and the skin using conductive gel or saline solution, thereby improving signal accuracy and stability. However, using wet electrodes requires a series of tedious preparations, especially the application of conductive gel. In existing technologies, EEG electrodes are typically mounted on an EEG cap via an electrode base for quick positioning on the subject's head. When using wet electrodes with conductive gel for EEG monitoring, after placing the EEG cap on the subject's head, each electrode needs to be flipped up, conductive gel applied, and then pressed back onto the corresponding position on the subject's scalp. This process not only easily causes electrode displacement, leading to inaccurate monitoring results, but the application of conductive gel is also cumbersome, requiring repeated hand movements and resulting in low efficiency.
[0004] Therefore, it is of great significance to design a brain electrode base that facilitates the application of conductive paste to the brain electrodes. Utility Model Content
[0005] To address the shortcomings of related technologies, this utility model provides a brain electrode base and brain electrode cap. By setting a first cavity in the electrode base for contact between conductive paste and brain electrodes, and placing the injection port at the top of the electrode base, contact between the conductive paste and brain electrodes can be achieved without moving the brain electrode base.
[0006] This utility model provides a brain electrode base, comprising:
[0007] A fixing member has a first cavity defined inside it; a brain electrode is installed on the fixing member, and the brain electrode is located at the liquid outlet end of the first cavity; an injection port is provided at the top of the fixing member, and the injection port is connected to the first cavity.
[0008] The conductive paste enters the first cavity through the injection port and flows to the outlet of the first cavity to contact the brain electrode.
[0009] This technical solution provides a first cavity inside the fixing component and places the brain electrode at the liquid outlet of the first cavity, so that the conductive paste can contact the brain electrode through the first cavity, thereby reducing the impedance between the brain electrode and the skin and increasing the monitoring effect of the brain electrode. By providing an injection port for the conductive paste to be placed in the first cavity at the top of the fixing component, the conductive paste can be conveniently placed in contact with the brain electrode through the first cavity without changing the position of the brain electrode.
[0010] In some embodiments, the lower end of the fixing member is provided with a mounting part for mounting brain electrodes. The mounting part is located at the liquid outlet end of the first cavity and is offset from the axis of the first cavity. The brain electrodes are connected to electrode wires, and the inner wall of the mounting part is provided with a wire through-hole for the electrode wires to pass through the mounting part.
[0011] This technical solution provides an installation part at the lower end of the fixing component, offset from the axis of the fixing component, to prevent the brain electrodes from obstructing the downward flow of conductive paste in the first cavity; by providing a wire-passing port on the inner wall of the installation part, after the brain electrodes are installed in the installation part, the electrode wire can be connected to the EEG monitoring device from the wire-passing port on the outside of the installation part, thereby facilitating the routing of the electrode wire.
[0012] In some embodiments, the outer periphery of the fastener is provided with a receiving groove, which is arranged along the circumference of the fastener, and at least a portion of the electrode wires located outside the mounting portion are disposed in the receiving groove.
[0013] This technical solution provides a receiving groove on the outer periphery of the fastener, allowing a portion of the electrode wire located on the outside of the mounting part to be placed within the receiving groove. This allows the receiving groove to accommodate and constrain the electrode wire, preventing the electrode wire from being scattered or tangled, which could affect signal transmission.
[0014] In some embodiments, the fixing member has an expansion cavity defined inside, which communicates with the first cavity and is located at the liquid outlet end of the first cavity; the inner diameter of the expansion cavity is larger than the inner diameter of the first cavity.
[0015] This technical solution provides an expansion chamber at the liquid outlet of the first cavity, which allows the expansion chamber to hold more conductive paste and increases the contact area between the conductive paste and the brain electrode, ensuring full contact between the brain electrode and the conductive paste.
[0016] In some embodiments, the brain electrode base also includes a silicone sleeve, the upper end of which is fitted around the periphery of the fixation member, and the lower end of which contacts the skin.
[0017] This technical solution uses a silicone sleeve to cover the outer periphery of the fixing component, with the lower end of the silicone sleeve in contact with the skin. This provides a buffer between the brain electrode and the skin, reducing discomfort caused by the brain electrode to the skin.
[0018] In some embodiments, a second cavity is defined inside the silicone sleeve, and the second cavity extends through the silicone sleeve along its axial direction; the lower end of the fastener is located in the second cavity, and the first cavity communicates with the second cavity; the inner diameter of the upper end of the second cavity is smaller than the inner diameter of the lower end of the second cavity, and the lower end of the second cavity is trumpet-shaped.
[0019] This technical solution involves creating a second cavity in the silicone sleeve, with the inner diameter of the upper end of the second cavity being smaller than the inner diameter of the lower end, making the lower end of the second cavity funnel-shaped. This allows the silicone sleeve to adhere to the skin when squeezed along its axial direction, thereby fixing the position of the brain electrode on the skin, preventing the brain electrode from moving relative to the skin, and also increasing the cushioning force of the silicone sleeve.
[0020] In some embodiments, the silicone sleeve is provided with a limiting part located inside the second cavity, and the bottom of the fastener abuts against the limiting part to limit the depth of the fastener inside the second cavity.
[0021] This technical solution sets a limiting part inside the silicone sleeve to limit the depth of the fixing member in the second cavity, thereby constraining and positioning the fixing member in the axial setting position of the silicone sleeve.
[0022] In some embodiments, the top of the silicone sleeve is provided with an inlet for the fastener to be disposed in the second cavity; a connecting part is provided at the outer edge of the inlet, and a connecting groove is provided on the outer periphery of the fastener, with the connecting part disposed in the connecting groove, so that the fastener and the silicone sleeve are connected to each other.
[0023] This technical solution uses a connecting part in the silicone sleeve and a connecting groove on the outer periphery of the fastener, so that the connecting part is located in the connecting groove, thereby positioning the axial connection position between the fastener and the silicone sleeve.
[0024] In addition, this utility model also provides an EEG cap, including a cap skin and the aforementioned EEG electrode base. The cap skin is provided with mounting holes, and the outer edge of the mounting holes is located in a connecting groove so that the fixing member can be installed on the cap skin.
[0025] This technical solution involves placing the outer edge of the mounting hole within the connecting groove, allowing the fastener to be connected to the cap skin of the EEG cap, thereby enabling the electrode base to be mounted on the EEG cap.
[0026] In some embodiments, the connecting portion disposed in the connecting groove is in contact with the cap skin, and the connecting portion is located below the cap skin.
[0027] This technical solution allows the fastener to be simultaneously connected to both the EEG cap and the silicone sleeve when the fastener is installed in the mounting hole, with the connecting part in contact with the cap skin and the connecting part located below the cap skin.
[0028] Based on the above technical solution, in this embodiment of the invention, the EEG base and EEG cap are provided with a first cavity in the fixing component for the conductive paste to contact the EEG electrode, and the injection port is located on the top of the fixing component. This allows the conductive paste to contact the EEG electrode without moving the EEG base, thereby ensuring the accuracy of the EEG electrode placement and facilitating the control of the amount of conductive paste injected. This allows for more effective use of the conductive paste while ensuring the detection effect. Attached Figure Description
[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0030] Figure 1 This is a schematic diagram of the structure of one embodiment of the brain electrode base of this utility model;
[0031] Figure 2 This is a schematic diagram of the fixing component in one embodiment of the brain electrode base of this utility model;
[0032] Figure 3 This is a schematic diagram of the brain electrode structure in one embodiment of the brain electrode base of this utility model;
[0033] Figure 4 This is a schematic diagram of the structure of the silicone sleeve in one embodiment of the brain electrode base of this utility model;
[0034] Figure 5 This is a schematic diagram of the structure of one embodiment of the EEG cap of this utility model.
[0035] In the picture:
[0036] 1. Fixing components; 2. Brain electrodes; 3. Silicone sleeves; 4. Caps; 5. Connectors;
[0037] 11. First cavity; 12. Receiving groove; 13. Connecting groove; 14. Expanding cavity; 15. Mounting part; 16. Wiring port;
[0038] 21. Electrode wire;
[0039] 301. Entrance;
[0040] 31. Second cavity; 32. Limiting part; 33. Connecting part. Detailed Implementation
[0041] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0042] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0043] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0045] As attached Figure 1 As shown in an illustrative embodiment of the brain electrode base of this utility model, the brain electrode base is used to install the brain electrode 2 and facilitates the contact between the conductive paste and the brain electrode 2.
[0046] like Figure 1 and Figure 2As shown, the brain electrode base includes a fixing member 1, the interior of which defines a first cavity 11 for injecting conductive paste; the lower end of the fixing member 1 is provided with a mounting part 15 for mounting brain electrode 2, the mounting part 15 being located at the liquid outlet end of the first cavity 11; the top of the fixing member 1 is provided with an injection port, which communicates with the first cavity 11 and is located at the liquid inlet end of the first cavity 11; the conductive paste is injected into the first cavity 11 from the main inlet and flows to the liquid outlet end of the first cavity 11 under the action of gravity to contact the brain electrode 2, thereby reducing the impedance between the brain electrode 2 and the skin and improving the monitoring accuracy of the brain electrode 2.
[0047] The aforementioned EEG base has a first cavity 11 provided in the fixing member 1 for the conductive paste to contact the EEG electrode 2, and the injection port is located on the top of the fixing member 1. This allows the conductive paste to contact the EEG electrode 2 without moving the EEG base, thereby ensuring the accuracy of the EEG electrode 2's placement position. It also allows for convenient control of the amount of conductive paste injected, enabling more effective use of the conductive paste while ensuring the detection effect.
[0048] like Figure 2 As shown, the mounting part 15 is offset from the axis of the first cavity 11 to prevent the brain electrode 2 from obstructing the downward flow of conductive paste within the first cavity 11.
[0049] In some embodiments, such as Figure 2 As shown, the first cavity 11 is located in the middle part of the fixing member 1, and the first cavity 11 is disposed through the fixing member 1 along the axial direction of the fixing member 1; the liquid inlet end of the first cavity 11 is located at the top of the fixing member 1, and the liquid outlet end of the first cavity 11 is located at the bottom of the fixing member 1.
[0050] like Figure 2 As shown, the lower end of the fixing member 1 is provided with an expansion cavity 14. The expansion cavity 14 is connected to the first cavity 11 and is located at the liquid outlet end of the first cavity 11. The inner diameter of the expansion cavity 14 is larger than the inner diameter of the first cavity 11. The expansion cavity 14 is used to hold more conductive paste and at the same time increase the contact area between the conductive paste and the brain electrode 2.
[0051] like Figure 1 , Figure 3 and Figure 5 As shown, the brain electrode 2 is used to collect brain electrical signals; the lower end of the brain electrode 2 protrudes from the lower end of the fixing member 1 so that the brain electrode 2 can contact the conductive paste.
[0052] In some embodiments, the brain electrode 2 is a cylindrical electrode, which uses sintered silver chloride and has good signal strength and monitoring stability.
[0053] like Figure 3 and Figure 5As shown, the brain electrode 2 is connected to an electrode wire 21. The end of the electrode wire 21 away from the brain electrode 2 is connected to a connector 5. The connector 5 is connected to the brain electroencephalogram (EEG) monitoring device so that the electrical signals collected by the brain electrode 2 can be transmitted to the EEG monitoring device.
[0054] like Figure 2 As shown, the inner wall of the mounting part 15 is provided with a wire-passing opening 16, which is used for the electrode wire 21 to pass through the mounting part 15. After the brain electrode 2 is installed in the mounting part 15, the electrode wire 21 can be connected to the EEG monitoring device from the outside of the mounting part 15 through the wire-passing opening 16, so as to facilitate the routing of the electrode wire 21.
[0055] The aforementioned EEG base houses the EEG electrode 2 within the fixing component 1, and connects the electrode wire 21 to the EEG electrode 2 for integrated installation. This effectively saves the operator's time in installing the EEG electrode 2 without hindering the injection of conductive paste, thus improving the monitoring efficiency of the EEG electrode 2.
[0056] like Figure 1 and Figure 2 As shown, the outer periphery of the fixing member 1 is provided with a receiving groove 12, which is used to place the electrode wire 21. After the brain electrode 2 is installed in the mounting part 15, part of the electrode wire 21 that passes through the wire through the wire opening 16 is placed in the receiving groove 12. The receiving groove 12 is used to accommodate and constrain the electrode wire 21 to prevent the electrode wire 21 from being scattered or tangled, which would affect the signal transmission.
[0057] In some embodiments, the mounting part 15 is located at the end of the receiving groove 12, and the electrode wire 21 is connected to the brain electrode 2 through the receiving groove 12.
[0058] In some embodiments, the receiving groove 12 is an arc-shaped groove, so that the receiving groove 12 can provide cushioning for the connection position of the electrode wire 21, effectively improving the durability of the product. It should be noted that during operation, the tension on the electrode wire 21 is directly applied to the connection point, increasing the firmness of the connection between the brain electrode 2 and the electrode wire 21.
[0059] In other embodiments, the length of the receiving groove 12 is half the outer perimeter of the fastener 1.
[0060] like Figure 1 As shown, the aforementioned brain electrode base also includes a silicone sleeve 3. The silicone sleeve 3 acts as a buffer between the brain electrode 2 and the patient's scalp to reduce the discomfort caused by the brain electrode 2 to the patient's scalp. The silicone sleeve 3 is fitted around the periphery of the fixing member 1, and the lower end of the silicone sleeve 3 contacts the patient's scalp. The silicone sleeve 3 can be compressed along the axial direction of the silicone sleeve 3 so that the brain electrode 2 located inside the silicone sleeve 3 can contact the patient's scalp, reducing the discomfort caused by the brain electrode 2 directly contacting the patient's skin.
[0061] like Figure 1 and Figure 4 As shown, the silicone sleeve 3 has a second cavity 31 defined inside for accommodating the fastener 1. The second cavity 31 is disposed through the silicone sleeve 3 along the axial direction of the silicone sleeve 3. The lower end of the fastener 1 is disposed in the second cavity 31, and the second cavity 31 is in communication with the first cavity 11.
[0062] It should be noted that the inner diameter of the upper end of the second cavity 31 is set to correspond to the outer diameter of the lower end of the fixing member 1, so that the lower end of the fixing member 1 can be inserted into the upper end of the second cavity 31.
[0063] It should also be noted that the lower end of the second cavity 31 can also hold conductive paste for temporary storage, reducing the frequency of adding conductive paste.
[0064] like Figure 4 As shown, the top of the silicone sleeve 3 is provided with an inlet 301, which communicates with the second cavity 31 and is used to allow the fixing member 1 to be placed in the second cavity 31.
[0065] like Figure 4 As shown, the top of the silicone sleeve 3 is provided with a connecting part 33, which is located at the outer edge of the penetration opening 301; as Figure 2 As shown, the outer periphery of the fastener 1 is provided with a connecting groove 13, such as Figure 1 As shown, the connecting part 33 is provided in the connecting groove 13 so that the silicone sleeve 3 and the fixing member 1 can be connected to each other, and the connection position between the silicone sleeve 3 and the fixing member 1 can be positioned.
[0066] In some embodiments, the receiving groove 12 is located below the connecting groove 13. When the lower end of the fixing member 1 is located in the second cavity 31, the receiving groove 12 is also located in the second cavity 31.
[0067] The inner diameter of the upper end of the second cavity 31 is smaller than the inner diameter of the lower end of the second cavity 31. The lower end of the second cavity 31 is trumpet-shaped, so that when the silicone sleeve 3 is squeezed along the axial direction of the silicone sleeve 3, the silicone sleeve 3 can be adsorbed onto the skin, thereby fixing the position of the brain electrode 2 on the skin, preventing the brain electrode 2 from moving relative to the skin, and also increasing the cushioning force of the silicone sleeve 3.
[0068] like Figure 4 As shown, the silicone sleeve 3 is provided with a limiting part 32, which is located in the second cavity 31. The bottom of the fixing member 1 abuts against the limiting part 32 so that the limiting part 32 restricts the depth of the fixing member 1 in the second cavity 31, thereby constraining and positioning the fixing member 1 in the axial setting position of the silicone sleeve 3.
[0069] It should be noted that when the bottom of the fastener 1 abuts against the limiting part 32, the connecting part 33 is provided in the connecting groove 13.
[0070] In the above-mentioned brain electrode base, the conductive paste is injected into the first cavity 11 through the injection port. Under the action of gravity, the conductive paste flows to the bottom of the first cavity 11 and contacts the brain electrode 2 until a small amount of conductive paste overflows from the bottom of the silicone sleeve 3, so that the brain electrode 2 and the conductive paste are in full contact.
[0071] The above-mentioned brain electrode base only requires the conductive paste to be injected into the first cavity 11 through the injection port. There is no need to flip the brain electrode base. The operation is simple and the brain electrode base is not easy to move. The brain electrode monitoring accuracy is high.
[0072] In practical applications, when patients undergo EEG monitoring, multiple EEG electrodes 2 are usually required to monitor simultaneously. In order to facilitate fixing the position of the EEG electrodes 2, the electrode base is usually installed on the EEG cap. When patients undergo EEG monitoring, they wear the EEG cap to quickly locate the EEG electrodes 2.
[0073] Based on the aforementioned EEG base, this utility model also provides an EEG cap, such as... Figure 5 As shown, the EEG cap includes a cap cover 4 and the aforementioned EEG electrode base; the cap cover 4 is provided with mounting holes, and the electrode base is installed in the mounting holes to install the electrode base onto the cap cover 4.
[0074] The outer edge of the mounting hole is located within the connecting groove 13 to allow the electrode base to be mounted on the EEG cap. It should be noted that the cap skin 4 is also made of flexible material, and the size of the mounting hole can be increased by tearing, so that the outer edge of the mounting hole is located within the connecting groove 13.
[0075] In some embodiments, the cap 4 is located above the connecting portion 33, so that the outer edge of the mounting hole and the connecting portion 33 are simultaneously provided in the connecting groove 13, so that the fastener 1 is simultaneously connected to the cap 4 and the silicone sleeve 3.
[0076] It should be noted that the fastener 1 is made of a relatively hard plastic material to increase the firmness of the connection between the fastener 1 and the cap 4.
[0077] It should also be noted that there are usually multiple brain electrodes 2 and multiple mounting holes. Multiple brain electrodes 2 are mounted on the cap 4 through corresponding electrode bases.
[0078] The installation steps of the electrode base are as follows: install the brain electrode 2 on the mounting part 15, place the electrode wire 21 from the inlet 301 on the outside of the mounting part 15 and in the receiving groove 12, then squeeze and / or tear the silicone sleeve 3 to deform the silicone sleeve 3, increase the size of the inlet 301, so that the lower end of the fixing member 1 is fitted into the second cavity 31, and the connecting part 33 is placed in the connecting groove 13. At the same time, the lower end of the fixing member 1 abuts against the limiting part 32 so that the fixing member 1 and the silicone sleeve 3 are connected to each other; finally, deform the cap 4 to increase the size of the mounting hole, so that the outer edge of the mounting hole is placed in the connecting groove 13, so that the fixing member 1 is installed on the EEG cap.
[0079] When using the above-mentioned EEG cap, the EEG cap with the electrode base installed is worn on the subject's head, so that the electrode base is in the corresponding position on the subject's head. Then, conductive paste is injected into the first cavity 11 from the injection port until a small amount of conductive paste overflows from the bottom of the silicone sleeve 3, so that the EEG electrode 2 is in full contact with the conductive paste.
[0080] The above-mentioned EEG cap only requires injecting conductive paste into the first cavity 11 through the injection port, without needing to flip the EEG electrode base. The operation is simple and the EEG electrode base is not easy to move, resulting in high EEG monitoring accuracy.
[0081] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0082] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A brain electrode base, characterized in that, include: A fixing member has a first cavity defined inside it. The inlet end of the first cavity is located at the top of the fixing member, and the outlet end of the first cavity is located at the lower end of the fixing member. A brain electrode is installed on the fixing member. The lower end of the fixing member is provided with a mounting part for installing the brain electrode. The brain electrode is located at the outlet end of the first cavity. An injection port is provided at the top of the fixing member, and the injection port communicates with the first cavity. A silicone sleeve has a second cavity defined inside it, which extends through the silicone sleeve along its axial direction. The upper end of the silicone sleeve is fitted around the outer periphery of a fixing member, and the lower end of the fixing member is located within the second cavity. The first cavity and the second cavity communicate with each other. The lower end of the silicone sleeve is in contact with the skin. The conductive paste enters the first cavity from the injection port and flows to the outlet of the first cavity to contact the brain electrode.
2. The brain electrode base according to claim 1, characterized in that, The mounting part is located at the liquid outlet end of the first cavity and is offset from the axis of the first cavity; the brain electrode is connected to an electrode wire, and the inner wall of the mounting part is provided with a wire through hole for the electrode wire to pass through the mounting part.
3. The brain electrode base according to claim 2, characterized in that, The fastener has a receiving groove on its outer periphery, the receiving groove is arranged along the circumference of the fastener, and at least a portion of the electrode wires located outside the mounting portion are located in the receiving groove.
4. The brain electrode base according to claim 1, characterized in that, The fixing member has an expansion cavity defined inside, which is connected to the first cavity and located at the liquid outlet end of the first cavity; the inner diameter of the expansion cavity is larger than the inner diameter of the first cavity.
5. The brain electrode base according to claim 1, characterized in that, The inner diameter of the upper end of the second cavity is smaller than the inner diameter of the lower end of the second cavity, and the lower end of the second cavity is trumpet-shaped.
6. The brain electrode base according to claim 5, characterized in that, The silicone sleeve is provided with a limiting part, which is located in the second cavity. The bottom of the fixing member abuts against the limiting part to limit the depth of the fixing member in the second cavity.
7. The brain electrode base according to claim 5, characterized in that, The top of the silicone sleeve is provided with an inlet for the fixing member to be placed in the second cavity; a connecting part is provided at the outer edge of the inlet, and a connecting groove is provided on the outer periphery of the fixing member, and the connecting part is disposed in the connecting groove so that the fixing member and the silicone sleeve are connected to each other.
8. An EEG cap, comprising a cap cover and the EEG electrode base as described in claim 7, characterized in that, The cap has mounting holes, the outer edge of which is located within the connecting groove, so that the fastener can be installed on the cap.
9. The EEG cap according to claim 8, characterized in that, The connecting part located in the connecting groove is in contact with the cap skin, and the connecting part is located below the cap skin.