Brain electrode fixing support and electroencephalogram signal collecting device

Abstract

The utility model provides a brain electrode fixing support and an electroencephalogram signal collecting device, and belongs to the technical field of medical instruments. The electroencephalogram signal collecting device solves the problem that an existing electroencephalogram signal collecting device is inconvenient to add conductive paste or gel. The brain electrode fixing support comprises a mounting base with an attaching face and a fixing structure used for fixing a brain electrode to the mounting base, a glue containing cavity extending to the brain electrode is formed in the attaching face, and a glue injection hole communicated with the glue containing cavity is formed in the mounting base; the electroencephalogram signal collecting device comprises an electroencephalogram cap, a plurality of open holes are formed in the electroencephalogram cap, and the electroencephalogram electrode fixing supports are positioned in the open holes. Conductive paste or gel can be conveniently injected into the gel containing cavity through the formed gel injection hole, and operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment and relates to a brain electrode fixing bracket and a brain electric signal acquisition device. Background Art

[0002] In clinical applications, many cranial nerve diseases, such as epilepsy, mental illness, sleep disorders, etc., require recording EEG signals to obtain physiological and pathological information. The scalp EEG acquisition system relies on conductive paste or gel to connect the brain electrodes to the head skin, collect bioelectric signals from the brain electrodes, and connect the signal amplifier and analog-to-digital converter to record the EEG signals. EEG acquisition takes a long time. To keep the brain electrodes in continuous contact with the skin, it is necessary to continuously fill the electrode cavity with conductive paste or gel, otherwise the conductive paste or gel on the brain electrodes will reduce conductivity due to continuous loss.

[0003] Existing brain electrodes are bonded to the headband by means of tape or the like. When the conductive paste or gel is lost, the brain electrodes need to be removed from the headband, and the conductive paste or gel needs to be applied to the electrode cavity before the brain electrodes are bonded to the headband. The operation is cumbersome, the adding efficiency is low, and the connection stability between the brain electrodes and the headband is poor. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes a brain electrode fixing bracket which is convenient for adding conductive paste.

[0005] Also proposed is an electroencephalogram signal acquisition device comprising the brain electrode fixing bracket.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A brain electrode fixing bracket comprises a mounting seat with a contact surface and a fixing structure for fixing the brain electrode on the mounting seat, wherein the contact surface is provided with a glue cavity extending to the brain electrode, and the mounting seat is provided with a glue injection hole connected with the glue cavity.

[0008] When in use, fix the brain electrode on the mounting seat through the fixing structure, then put the mounting seat against the scalp, fix the mounting seat, and then inject the conductive paste or gel into the glue cavity through the glue injection hole to ensure good contact between the brain electrode and the scalp. When the conductive paste or gel is consumed, it can be directly injected into the glue cavity without removing the mounting seat, which is convenient for adding.

[0009] In the above-mentioned brain electrode fixing bracket, the mounting seat is provided with a positioning surface, the brain electrode is abutted against the positioning surface under the action of the fixing structure, the positioning surface is provided with an opening communicating with the gel-containing cavity, and the brain electrode completely covers the opening. There is no gap between the brain electrode and the mounting seat, which will not cause leakage of the conductive paste or gel.

[0010] In the above-mentioned brain electrode fixing bracket, the fixing structure includes a connecting seat connected to the mounting seat, and the connecting seat has a concave cavity for positioning the brain electrode arranged relative to the positioning surface, and the brain electrode is positioned in the concave cavity. A positioning space adapted to the brain electrode is formed between the inner surface of the concave cavity and the positioning surface, so that the brain electrode can be effectively positioned.

[0011] In the above-mentioned brain electrode fixing bracket, the connecting seat is provided with a connecting sleeve, the concave cavity is located at the inner end of the connecting sleeve, the mounting seat has a connecting column threadedly matched with the connecting sleeve, and the positioning surface is located at the end of the connecting column away from the mounting seat.

[0012] The inner wall of the connecting sleeve is provided with an internal thread, and the outer wall of the connecting column is provided with an external thread, and the two threads are matched. When the connecting column and the connecting sleeve are connected in place, the inner surface of the concave cavity and the positioning surface just form the above-mentioned positioning space.

[0013] In the above-mentioned brain electrode fixing bracket, the connecting sleeve is provided with a slot through which the wire connected to the brain electrode passes.

[0014] In the above-mentioned brain electrode fixing bracket, the connection seat has a limiting surface, and a positioning column is vertically arranged on the limiting surface. The positioning column is inserted into the opening of the warp belt or the weft belt, and the warp belt or the weft belt is pressed on the limiting surface, so that the contact surface of the mounting seat is pressed tightly against the scalp.

[0015] In the above-mentioned brain electrode fixing bracket, the periphery of the positioning column near the limiting surface is provided with an external thread, and a clamping cap is threadedly connected to the external thread. The warp band or the weft band can be clamped on the limiting surface of the connecting seat by the clamping cap.

[0016] The electroencephalogram signal acquisition device comprises an electroencephalogram cap and the above-mentioned electroencephalogram electrode fixing bracket, wherein the electroencephalogram cap is provided with a plurality of openings, and the electroencephalogram electrode fixing bracket is positioned in the openings.

[0017] In the above-mentioned EEG signal acquisition device, the EEG cap includes two ear straps, a plurality of warp straps connected between the two ear straps and a weft strap for connecting the plurality of warp straps, and the warp straps and the weft straps are respectively provided with a plurality of the above-mentioned openings along their length directions.

[0018] In the above-mentioned EEG signal acquisition device, the warp belt and the weft belt are connected by a connector. One end of the warp belt passes around the ear belt and then sticks back to the warp belt, so that at least two openings on the warp belt overlap, and the warp belt is connected by a connector inserted in the overlapping openings. The openings of the warp belt and the openings of the weft belt overlap at the intersection of the warp belt and the weft belt, and the warp belt and the weft belt are connected by a connector inserted in the overlapping openings.

[0019] In the above-mentioned EEG signal acquisition device, the connecting member includes a connecting rod having a limiting flange at one end and a nut threadedly connected to the connecting rod.

[0020] In the above-mentioned EEG signal acquisition device, the opening is flat, and the connecting piece includes a connecting rod with a limiting flange at one end, and a flat limiting piece at the end of the connecting rod away from the limiting flange. When connecting, align the limiting piece with the opening, pass the limiting piece through the opening, and then rotate the limiting piece by 90° so that the limiting piece is perpendicular to the length direction of the opening, so as to achieve quick connection.

[0021] Compared with the prior art, the utility model has the following advantages: the brain electrodes are fixed by the brain electrode fixing bracket, so the brain electrodes can be positioned on the EEG signal acquisition device very conveniently, and the stability is good after positioning; and a gel cavity is provided, and when the conductive paste or gel is consumed, the conductive paste or gel can be directly injected into the gel cavity without removing the mounting seat, which is convenient for adding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the explosion of the brain electrode fixing bracket.

[0023] Figure 2 It is a cross-sectional view of the brain electrode fixing bracket.

[0024] Figure 3 It is a cross-sectional view of the brain electrode fixing bracket and the compression cap when they are matched.

[0025] Figure 4 It is a structural schematic diagram of an EEG signal acquisition device.

[0026] Figure 5 This is an exploded view of the first type of connector.

[0027] Figure 6 It is a structural schematic diagram of the second connecting piece.

[0028] In the figure, 1. mounting seat; 11. abutment surface; 12. glue containing cavity; 13. glue injection hole; 14. positioning surface; 15. opening; 16. connecting column; 2. connecting seat; 21. concave cavity; 22. connecting sleeve; 23. slot; 24. limiting surface; 25. positioning column; 3. clamping cap; 40. opening; 41. ear strap; 42. warp strap; 43. weft strap; 5. connecting piece; 51. limiting flange; 52. connecting rod; 53. nut; 54. limiting plate. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] like Figure 1The brain electrode fixing bracket shown includes a disc-shaped mounting seat 1, the bottom surface of the mounting seat 1 is a contact surface 11 against the scalp, and the top surface of the mounting seat 1 is a positioning surface 14 for contacting the brain electrode. The brain electrode is fixed to the mounting seat 1 by a fixing structure.

[0031] like Figure 2 As shown, a gel cavity 12 extending upward is provided on the abutment surface 11, and an opening 15 communicating with the gel cavity 12 is provided on the positioning surface 14. Under the action of the fixing structure, the brain electrode completely covers the opening 15, so that there is no gap between the brain electrode and the mounting seat 1, and no leakage of the conductive paste or gel will occur. In order to facilitate the injection of the conductive paste or gel, as shown in FIG. Figure 1 and Figure 2 As shown, a glue injection hole 13 communicating with the glue injection cavity is provided on the side of the mounting seat 1 .

[0032] When in use, the brain electrode is fixed on the mounting seat 1 through the fixing structure, and then the abutting surface 11 of the mounting seat 1 is abutted against the scalp, and the mounting seat 1 is fixed, and then the conductive paste or gel is injected into the glue cavity 12 through the glue injection hole 13 to ensure good contact between the brain electrode and the scalp. When the conductive paste or gel is consumed, the conductive paste or gel can be directly injected into the glue cavity 12 through the glue injection hole 13 without removing the mounting seat 1, which is convenient for adding.

[0033] like Figure 2 As shown, the fixing structure includes a connecting seat 2 connected to the mounting seat 1, and the connecting seat 2 has a cavity 21 for positioning the brain electrode arranged relative to the positioning surface 14, and a positioning space adapted to the brain electrode is formed between the inner surface of the cavity 21 and the positioning surface 14, so that the brain electrode can be effectively positioned. In order to facilitate the extension of the wire connected to the brain electrode, a slot 23 is opened on the connecting seat 2.

[0034] Specifically, Figure 2 As shown, the connecting seat 2 is provided with a connecting sleeve 22 extending downward, the concave cavity 21 is located at the inner upper end of the connecting sleeve 22, and the mounting seat 1 is provided with a connecting column 16 extending upward, the connecting column 16 extends into the connecting sleeve 22 and is threadedly matched with the connecting sleeve 22, the positioning surface 14 is located at the upper end of the connecting column 16, and the injection cavity passes through the connecting column 16 and the mounting seat 1. The slot 23 is provided on the connecting sleeve 22. When the connecting column 16 and the connecting sleeve 22 are connected in place, the inner surface of the concave cavity 21 and the positioning surface 14 just form a positioning space.

[0035] like Figure 2As shown, a limiting surface 24 is provided on the top of the connecting seat 2, and a positioning column 25 extending upward is vertically provided on the limiting surface 24. When installing the brain electrode fixing bracket, the positioning column 25 is inserted into the opening 40 of the warp belt 42 or the weft belt 43, and the warp belt 42 or the weft belt 43 is tightened and pressed on the limiting surface 24, so that the contact surface 11 of the mounting seat 1 is pressed against the scalp.

[0036] To further prevent hair loss, Figure 3 As shown, the outer periphery of the lower end of the positioning column 25 is provided with an external thread, and a clamping cap 3 is threadedly connected to the external thread. The clamping cap 3 can clamp the warp belt 42 or the weft belt 43 onto the limiting surface 24.

[0037] like Figure 4 The EEG signal acquisition device shown includes an EEG cap, on which a plurality of openings 40 are formed, and positioning posts 25 on a brain electrode fixing bracket are inserted into the openings 40 .

[0038] like Figure 4 As shown, the EEG cap includes two ear straps 41, a plurality of warp straps 42 connected between the two ear straps 41 and a weft strap 43 for connecting the plurality of warp straps 42, openings 40 are respectively opened on the warp straps 42 and the weft straps 43, and the multiple openings 40 on the same warp strap 42 and weft strap 43 are distributed along the length direction of the warp straps 42 and the weft straps 43.

[0039] One end of the warp belt 42 passes around the ear belt 41 and then sticks back to the warp belt 42, so that at least two openings 40 on the warp belt 42 overlap, and the warp belt 42 is connected by the connecting piece 5 inserted in the overlapping openings 40. The openings 40 of the warp belt 42 overlap with the openings 40 of the weft belt 43 at the intersection of the warp belt 42 and the weft belt 43, and the warp belt 42 and the weft belt 43 are connected by the connecting piece 5 inserted in the overlapping openings 40.

[0040] To ensure the stability of the connection, you can choose Figure 5 The connecting member 5 shown includes a connecting rod 52 with a limiting flange 51 at one end and a nut 53 threadedly connected to the connecting rod 52.

[0041] When the opening 40 is flat, in order to achieve quick connection, the following can be selected: Figure 6 The connecting member 5 shown in the figure comprises a connecting rod 52 having a limiting flange 51 at one end, and a flat limiting piece 54 at one end of the connecting rod 52 away from the limiting flange 51. When connecting, the limiting piece 54 is aligned with the opening 40, and the limiting piece 54 is passed through the opening 40, and then the limiting piece 54 is rotated 90° so that the limiting piece 54 is perpendicular to the length direction of the opening 40, so that a quick connection can be achieved.

[0042] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A brain electrode fixing bracket, characterized in that: The invention comprises a mounting seat (1) having a contact surface (11) and a fixing structure for fixing a brain electrode on the mounting seat (1); the contact surface (11) is provided with a glue-receiving cavity (12) extending to the brain electrode; the mounting seat (1) is provided with a glue injection hole (13) communicating with the glue-receiving cavity (12); the mounting seat (1) is provided with a positioning surface (14); the brain electrode is contacted with the positioning surface (14) under the action of the fixing structure; the positioning surface (14) is provided with an opening (15) communicating with the glue-receiving cavity (12); the brain electrode completely covers the opening (15).

2. The brain electrode fixing bracket according to claim 1, characterized in that: The fixing structure comprises a connecting seat (2) connected to the mounting seat (1), the connecting seat (2) having a concave cavity (21) arranged relative to the positioning surface (14) and used for positioning the brain electrode, and the brain electrode is positioned in the concave cavity (21).

3. The brain electrode fixing bracket according to claim 2, characterized in that: The connecting seat (2) is provided with a connecting sleeve (22), the concave cavity (21) is located at the inner end of the connecting sleeve (22), the mounting seat (1) has a connecting column (16) threadedly engaged with the connecting sleeve (22), and the positioning surface (14) is located at an end of the connecting column (16) away from the mounting seat (1).

4. The brain electrode fixing bracket according to claim 3, characterized in that: The connecting sleeve (22) is provided with a slot (23).

5. The brain electrode fixing bracket according to claim 2, characterized in that: The connection seat (2) is provided with a limiting surface (24), and a positioning column (25) is vertically arranged on the limiting surface (24).

6. The brain electrode fixing bracket according to claim 5, characterized in that: An outer periphery of the positioning column (25) close to the limiting surface (24) is provided with an external thread, and a clamping cap (3) is threadedly connected to the external thread.

7. An electroencephalogram signal acquisition device, characterized in that: It comprises an EEG cap and a brain electrode fixing bracket as claimed in any one of claims 1 to 6, wherein the EEG cap is provided with a plurality of openings (40), and the brain electrode fixing bracket is positioned in the openings (40).

8. The electroencephalogram signal acquisition device according to claim 7, characterized in that: The EEG cap comprises two ear straps (41), a plurality of warp straps (42) connected between the two ear straps (41), and a weft strap (43) used to connect the plurality of warp straps (42), wherein the warp straps (42) and the weft straps (43) are respectively provided with a plurality of the above-mentioned openings (40) along their length directions.

9. The electroencephalogram signal acquisition device according to claim 8, characterized in that: The warp belt (42) and the weft belt (43) are connected via a connecting piece (5).

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