A conductive paste fast filling device based on electrode cap

Abstract

The present invention discloses a fast filling device for conductive paste based on an electrode cap, the device comprising a plurality of flexible elastic bands and a plurality of suction injection balls arranged on the elastic bands. When the elastic bands are bent into the same arc as the electrode caps, the suction injection balls on each elastic band are plugged into the electrode cavities on the electrode caps in a one-to-one correspondence. The present invention installs a plurality of suction injection balls on a plurality of flexible elastic bands, and the distribution of the suction injection balls on the entire filling device is consistent with the distribution of electrodes on the electrode caps to be injected. Since the elastic bands have a certain elasticity, some of them can be bent and fitted with the electrode caps, and the suction ports of the plurality of suction injection balls are plugged into the cavities of the electrode caps. By manually pressing the injection balls, the conductive paste filling of the plurality of electrode cavities can be completed at one time. The entire filling time can be shortened to 5 minutes, which greatly improves work efficiency and makes the data recording of brain electrical activity more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of reaction time measurement, and in particular to a conductive paste fast filling device based on an electrode cap. Background Art

[0002] The electroencephalogram (EEG) is one of the most commonly used scientific instruments in psychology and cognitive neuroscience. Its basic principle is to record the spontaneous and evoked electrical activity of the brain's nerve cells using multiple electrodes placed firmly on the scalp. Existing EEGs have varying configurations, including 32, 64, 128, and 256 electrodes. In terms of recording completeness, 256 electrodes provide more detailed and accurate recordings than 128-electrode EEGs, with higher spatial resolution. However, due to various factors, increasing the number of electrodes is neither feasible nor desirable. In fact, the most common EEG currently has 64 electrodes.

[0003] Since the brain is an irregular "circle" and is covered with hair, in order to make the electrodes close to the scalp, the electrodes of the EEG device adopt two methods: 1) All electrodes are connected in series with a semicircular fabric to form an "electrode cap"; 2) The electrodes are hollow and filled with conductive paste to form a path between the scalp and the data cable, reducing electrical signal loss.

[0004] At present, all the filling processes of conductive paste are done manually, that is, a certain amount of paste-like conductive paste is extracted with a syringe and injected into the electrode cavity to ensure complete filling. It takes about 30 minutes to fill 64 electrodes, and unskilled experimenters may even need 50 minutes. Therefore, under the current circumstances, the preparation work for EEG experiments is very time-consuming. Because when recording the spontaneous and induced electrical activities of the brain's nerve cells, it is necessary to first put the electrode cap on the head, and then fill the conductive paste into each hollow electrode. Taking too long will have an adverse effect on people's psychology, causing irritability, discomfort and other experiences, thereby reducing the reliability and repeatability of the experiment. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies in the above-mentioned background technology and provide a conductive paste rapid filling device based on an electrode cap, which can quickly fill 64 electrodes or more with conductive paste in a short time without any psychological impact on the tester, making the test data more accurate.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A conductive paste rapid filling device based on an electrode cap, the device comprising a plurality of flexible elastic bands and a plurality of suction injection balls arranged on the elastic bands. When the elastic bands are bent to have the same curvature as the electrode cap, the suction injection balls on each elastic band are plugged into each electrode cavity on the electrode cap in a one-to-one correspondence.

[0008] The middle parts of the elastic bands intersect at the same point, and the elastic bands are fixed together by fasteners. A plurality of the suction injection balls are arranged along the length direction of the elastic bands.

[0009] A branch elastic belt is also provided on the elastic belt, and an angle is formed between the branch elastic belt and the elastic belt. The suction injection ball is provided on the branch elastic belt.

[0010] The multiple elastic bands are divided into two groups, and the elastic bands in the same group are arranged in parallel and at intervals. The two groups of elastic bands are arranged vertically, and the elastic bands in one group are overlapped with the elastic bands in the other group, and a suction injection ball is respectively arranged at the overlapping position.

[0011] The elastic band is made of a bendable elastic steel plate or a flexible polymer material, and the distribution of the suction injection balls on the elastic band corresponds to the positions of the electrode cavities on the electrode cap.

[0012] The amount of adsorption by the suction injection ball at one time is equal to the amount of conductive paste that can be accommodated in the electrode cavity.

[0013] The suction injection ball comprises a rubber ball and a suction tube, one end of the suction tube is communicated with the rubber ball, and the other end of the suction tube is adapted to the electrode cavity.

[0014] A stopper is provided at a position of the suction tube near the suction port, for limiting the depth of the suction tube inserted into the electrode cavity.

[0015] The suction injection ball is fixed to the upper end surface of the elastic band through a bracket, the bracket fixes the suction tube, and the suction port of the suction tube extends out of the lower end surface of the elastic band.

[0016] The suction pipe is also provided with a one-way valve.

[0017] The technical solution of the present invention has the following advantages:

[0018] A. The present invention installs multiple suction injection balls on multiple flexible elastic belts. The distribution of the suction injection balls on the entire filling device is consistent with the distribution of electrodes on the electrode cap to be injected. Since the elastic belts have a certain elasticity, some of them can be bent and fit with the electrode cap. The suction ports of the multiple suction injection balls are inserted into the cavity of the electrode cap. By manually pressing the injection balls, the conductive paste filling of multiple electrode cavities can be completed at one time. The entire filling time can be shortened to 5 minutes, which greatly improves work efficiency and makes the data recording of brain electrical activity more accurate.

[0019] B. The present invention sets a limiter at the suction port near the suction tube. On the one hand, the limiter can prevent the entire suction injection ball from detaching from the bracket, and on the other hand, it can also limit the depth of the suction tube inserted into the electrode cavity. The appropriate height of the conductive paste contained in the electrode cavity should be lower than the position of the suction port when the suction tube is inserted into the electrode cavity, which is conducive to completely discharging the conductive paste in the suction tube into the electrode cavity without causing back suction problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention, the following will briefly introduce the drawings required for use in the specific embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A top view of the structure of the first embodiment provided by the present invention (in a flatly unfolded state);

[0022] Figure 2 A top view of the second embodiment of the present invention (in a flattened state);

[0023] Figure 3 A top view of the structure of the third embodiment provided by the present invention (in a flatly unfolded state);

[0024] Figure 4 This is a schematic diagram of the connection structure between the suction injection ball and the elastic band provided by the present invention;

[0025] Description of reference numerals:

[0026] 1-elastic band, 11-branch elastic band; 2-suction injection ball, 21-rubber ball, 22-suction tube; 3-limiter; 4-bracket. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] like Figure 1 As shown, the present invention provides a device for rapidly filling conductive paste with an electrode cap, comprising multiple flexible elastic bands 1 and multiple suction and injection balls 2 disposed on the elastic bands 1. When the elastic bands 1 are bent to the same arc as the electrode cap, the suction and injection balls 2 on each elastic band 1 are plugged into each electrode cavity on the electrode cap in a one-to-one correspondence. The bending of the elastic bands 1 allows the multiple suction and injection balls 2 to quickly plug into the electrode cavities on the electrode cap. By pressing the suction and injection balls 2, the conductive paste is quickly filled into the electrode cavities, greatly improving filling efficiency and shortening filling time.

[0029] like Figure 1 As shown, the middle parts of the elastic bands 1 intersect at the same point, and the elastic bands 1 are fixed together by fasteners (such as rivets, etc.). Multiple suction injection balls 2 are arranged along the length direction of the elastic band 1, and their spacing is consistent with the spacing between the electrodes on the electrode cap.

[0030] Of course, a branch elastic band 11 can also be provided on the elastic band 1, and an angle is formed between the branch elastic band 11 and the elastic band 1. The branch elastic band and the elastic band can be fixed with rivets. A suction injection ball 2 is also provided on the branch elastic band 11, which makes it easier to match the suction injection ball with the electrode cavities on the electrode cap.

[0031] like Figure 2 and Figure 3 As shown, the present invention can also divide multiple elastic bands 1 into two groups, with the elastic bands 1 in the same group arranged parallel and spaced apart, and the two groups of elastic bands 1 arranged perpendicularly. The elastic bands 1 in one group are arranged to overlap with the elastic bands 1 in the other group, and a suction injection ball 2 is provided at each overlapping portion. By bending the elastic band between the two suction injection balls 2, the conductive paste in each electrode cavity on the electrode cap can also be quickly filled.

[0032] The elastic band 1 is made of a bendable elastic steel plate or a flexible polymer material, and the distribution of the suction injection balls 2 on the elastic band 1 corresponds to the positions of the electrode cavities on the electrode cap.

[0033] In order to ensure that the conductive paste can fill the electrode cavity once, the suction injection ball 2 is designed so that its capacity is equal to the amount of conductive paste that can be accommodated in the electrode cavity.

[0034] like Figure 4As shown, the suction injection ball 2 comprises a rubber ball 21 and a suction tube 22. One end of the suction tube 22 is connected to the rubber ball 21, and the other end is adapted to fit within the electrode cavity. A stopper 3 is also provided near the suction port of the suction tube 22 to limit the depth of insertion of the suction tube 22 into the electrode cavity. When the suction tube 22 fully presses the conductive paste in the rubber ball 21 into the electrode cavity, the outlet of the suction tube is completely free of the conductive paste in the electrode cavity, thus preventing back suction.

[0035] The suction injection ball 2 is fixed to the upper end surface of the elastic band 1 through a bracket 4, and the bracket 4 fixes the suction tube 22, and the suction port of the suction tube 22 extends out of the lower end surface of the elastic band 1. At this time, the limiter 3 is located at the lower end surface of the elastic band.

[0036] Of course, in order to prevent the back-suction problem of the suction tube in the present invention, a one-way valve can be provided on the suction tube 22. When discharging the conductive paste, only one-way discharge of the conductive paste into the electrode cavity is allowed; after the discharge is completed, the external gas can be replenished into the rubber ball on the rubber ball, thereby restoring the suction capacity of the rubber ball.

[0037] Specifically, 64 suction injection balls are inserted into the bracket, and they are bent into a flat surface, which makes it convenient to fill all 64 suction tubes with conductive paste at one time; they are bent into an arc surface to facilitate the insertion of 64 suction tubes into the electrode cavity. When the elastic band is fitted on the electrode cap, each electrode cavity can be quickly filled by pressing each rubber ball, which greatly improves the filling efficiency and is more conducive to obtaining accurate data during testing.

[0038] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A conductive paste fast filling device based on an electrode cap, characterized in that: The device comprises a plurality of flexible elastic bands (1) and a plurality of suction injection balls (2) arranged on the elastic bands (1); when the elastic bands (1) are bent into the same arc as the electrode cap, the suction injection balls (2) on each of the elastic bands (1) are plugged into each of the electrode cavities on the electrode cap in a one-to-one correspondence; the elastic bands (1) are made of a bendable elastic steel plate or a flexible polymer material, and the distribution of the suction injection balls (2) on the elastic bands (1) corresponds to the position of each of the electrode cavities on the electrode cap. Correspondingly, the amount of the suction injection ball (2) adsorbed at one time is equal to the amount of the conductive paste that can be accommodated in the electrode cavity; the suction injection ball (2) comprises a rubber ball (21) and a suction tube (22), one end of the suction tube (22) is connected to the rubber ball (21), and the other end thereof is adapted to the electrode cavity, and a one-way valve is further provided on the suction tube (22); a stopper (3) is provided at a position near the suction port of the suction tube (22) for limiting the depth of the suction tube (22) inserted into the electrode cavity; The suction injection ball (2) is fixed to the upper end surface of the elastic band (1) through a bracket (4), and the bracket (4) fixes the suction tube (22), and the suction port of the suction tube (22) extends out of the lower end surface of the elastic band (1).

2. The conductive paste rapid filling device based on the electrode cap according to claim 1, characterized in that: The middle parts of the elastic bands (1) intersect at the same point, and the elastic bands (1) are fixed together by fasteners. A plurality of the suction injection balls (2) are arranged along the length direction of the elastic bands (1).

3. The conductive paste rapid filling device based on the electrode cap according to claim 2, characterized in that: A branch elastic belt (11) is also provided on the elastic belt (1), and an angle is formed between the branch elastic belt (11) and the elastic belt (1), and the suction injection ball (2) is provided on the branch elastic belt (11).

4. The conductive paste rapid filling device based on the electrode cap according to claim 1, characterized in that: The plurality of elastic bands (1) are divided into two groups. The elastic bands (1) in the same group are arranged in parallel and spaced apart. The two groups of elastic bands (1) are arranged vertically. The elastic bands (1) in one group are arranged in an overlapping manner with the elastic bands (1) in the other group, and a suction injection ball (2) is respectively arranged at the overlapping position.

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