Sleeve-type electroencephalogram measuring electrode and use method

Abstract

The present invention relates to a sleeve-type electroencephalogram (EEG) measurement electrode and a method for using the electrode. The electrode is fixedly installed on the scalp through a hair bundle, and comprises a sleeve, an electrode wire and a coupling agent. The sleeve is a sleeve structure with two ends open, and the electrode wire and the sleeve; when the electrode is installed on the scalp, the hair bundle is inserted into the inner cavity of the sleeve body, one end of the sleeve is in close contact with the scalp, the coupling agent is filled in the inner cavity of the sleeve body, an oil seal is formed between the root area of ​​the hair bundle and the sleeve, and the sleeve and the hair bundle fix the electrode through contact friction. Compared with the prior art, the present invention has the advantages of strong stability, accurate measurement, and convenient use.

Description

Technical Field

[0001] The invention relates to the field of electroencephalogram measurement, and in particular to a sleeve-type electroencephalogram measurement electrode and a use method thereof. Background Art

[0002] EEG measurement is a common medical measurement method, and physiological information can be obtained through EEG signals. EEG measurement can also provide an important signal source for emerging wearable devices. EEG measurement is to place electrodes at certain positions on the head, form a stable micro-electric detection channel through conductive glue, accurately obtain weak bioelectricity, and collect, amplify, and process signals of the human head through EEG equipment such as electroencephalographs, and display and record its waveform. The EEG electrode cap plays the role of fixing the electrodes and accurately positioning them during EEG measurement. It detects weak currents in the head through electrodes to detect bioelectric signals in the human head.

[0003] However, traditional EEG caps have the following problems:

[0004] In terms of wearing method, the traditional EEG cap needs to be worn with a flannel breathable cap, which is inconvenient. At the same time, during the collection process, the long time may cause the subject's neck to be strangled. And for the wet electrode EEG cap, it needs to be cleaned after each experiment, which is inconvenient.

[0005] In terms of electrode fixation, traditional electrodes need to be fixed by a flannel-type EEG cap, and the corresponding electrodes are fixed on the EEG cap using pre-set holes. In the experiment, if the measurement area needs to be changed, the original electrodes need to be removed from the EEG cap and then re-fixed to the new position. Since the hole positions have been preset at the factory, the electrode positions are relatively fixed and cannot be fine-tuned. In addition, since the head size of each subject is different, the EEG cap needs to be constantly pulled to adjust its position after being put on, which greatly increases the preparation time in the early stage. Due to the adjustability of the position of the EEG cap, the position of the electrodes is not fixed and will shift with the adjustment.

[0006] In terms of acquisition, traditional EEG caps have two acquisition methods: dry and wet. The acquisition of dry electrodes sacrifices the clarity of the signal. Although wet electrodes solve the above problems, they are very complicated in the early preparation. Taking the current EEG caps at home and abroad as an example, the epoch saline wet electrode in the United States uses a sponge soaked in saline to conduct electricity. During use, it will be found that this conduction method is very slow. At the same time, because there is a layer of subject's hair under the sponge, the signal conduction is poor and the impedance is large. It takes a long time to soak and continuously inject saline during the experiment to keep the channel clean. However, due to excessive addition of saline, the phenomenon of adjacent electrodes conducting in series will occur. The better EEG cap in China is the conductive paste wet electrode produced by Bo Ruikang. This electrode uses an electrode sheet for acquisition. The electrode sheet occupies about 1 / 2 of the entire electrode space, and the other half is left empty for injecting conductive paste. The conductive paste is a medical coupling agent with some sand and stone added. During use, the electrode is injected with conductive paste for conduction. This electrode also has the same problem. First, in the preparation stage, the conductive paste needs to be injected through a syringe. Since the conductive paste is in a semi-gel state, the time it takes to completely soak the hair and penetrate into the scalp is similar to that of the saline electrode. Therefore, in the early preparation stage, the same problem of long preparation time as the saline electrode will occur. For these reasons, ordinary electrodes have problems such as long preparation time, inability to achieve good conductivity in one go, and need to be constantly adjusted before experiments can be carried out. Summary of the invention

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a sleeve-type EEG measurement electrode and a method of use which are easy to use, easy to adjust, accurate in measurement and good in stability.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A sleeve-type electroencephalogram measurement electrode, which is fixedly mounted on the scalp through a hair bundle, comprises a sleeve, an electrode wire and a coupling agent, wherein the sleeve is a sleeve structure with two ends open, and the electrode wire and the sleeve;

[0010] When the electrode is installed on the scalp, the hair bundle is inserted into the inner cavity of the sleeve, one end of the sleeve is in close contact with the scalp, the coupling agent is filled in the inner cavity of the sleeve, an oil seal is formed between the root area of ​​the hair bundle and the sleeve, and the sleeve and the hair bundle fix the electrode through contact friction. The cavity oil seal coupling agent plays two roles: one is to ensure that the electrode will not be separated from the scalp; the other is that the oil seal enhances the conductive effect.

[0011] Furthermore, the sleeve includes a barrel and a contact portion, the barrel is a cylindrical cylinder with a cavity provided inside, the contact portion is a trumpet-shaped contact portion, which is arranged at the bottom of the barrel, and the electrode wire is connected to the barrel. When the electrode is installed on the scalp, the bottom of the contact portion is in close contact with the scalp, and the trumpet-shaped contact portion is conducive to better adsorption on the subject's scalp.

[0012] Further preferably, the height of the sleeve is 5 cm, and the diameter of the inner cavity of the cylinder is 3 cm.

[0013] Furthermore, the electrode also includes a fixing component, which is arranged on the barrel and is used to contact with the hair bundle to fix the electrode when the electrode is installed on the scalp.

[0014] Furthermore, the fixing assembly comprises an annular base and an elastic sheet, wherein a plurality of the elastic sheets are provided, and the bottom of the elastic sheets is arranged in an arc shape on the circumference of the annular base, and the plurality of elastic sheets are arranged in sequence along the circumference of the annular base to form a blooming-shaped cylinder with a fixed lower end and an upward opening that gradually expands, and the elastic sheet has a radial elastic restoring force;

[0015] When the electrode is installed on the scalp, the hair bundle passes through the annular base and the blooming cylinder surrounded by multiple elastic sheets in sequence, and the multiple elastic sheets are respectively subjected to radial inward forces to clamp the hair bundle from different directions; when the electrode needs to be disassembled, the force applied to each elastic sheet is removed, and the hair bundle is loosened under the action of the elastic restoring force of the elastic sheet.

[0016] Preferably, a strip-shaped protrusion is provided at the inner upper part of the elastic sheet, and when the electrode is installed on the scalp, the strip-shaped protrusion cooperates to clamp the hair bundle.

[0017] Furthermore, an annular clip and part are provided at the end surface of one end of the cylinder away from the contact part, and the annular clip and part form a fixing component mounting hole at the end of the cylinder, and the fixing component is sleeved in the fixing component mounting hole.

[0018] Furthermore, the diameter of the fixing assembly installation hole is larger than the diameter of the lower end of the blooming-shaped cylinder surrounded by the plurality of elastic sheets, and smaller than the diameter of the upper end opening of the blooming-shaped cylinder;

[0019] When the electrode needs to be fixed on the scalp, the fixing component is pressed in the direction of the barrel, and multiple elastic sheets shrink inward under the action of the annular clamp and the part, and clamp the hair bundle from different directions; when the electrode needs to be removed, the fixing component is pulled out in the opposite direction of the barrel, and the hair bundle is loosened under the action of the elastic restoring force of the elastic sheet, which is easy to use.

[0020] A method for using the sleeve-type EEG measuring electrode comprises the following steps:

[0021] S1: Select the scalp area where the electrode test needs to be installed;

[0022] S2: Select the hair bundle in the corresponding area and insert it into the sleeve;

[0023] S3: Push the sleeve along the hair bundle from the end of the hair to the bottom of the hair root, so that the sleeve is in close contact with the scalp;

[0024] S4: Inject coupling agent into the inner cavity of the sleeve body along the hair bundle, perform oil sealing and fix it;

[0025] S5: repeat steps S1-S4 to complete the installation of all electrodes, and then perform signal acquisition through the electrode wires;

[0026] S6: After the collection is completed, the fixing component is released and the sleeve is separated from the scalp;

[0027] S7: Slide the sleeve along the hair to the end of the hair and remove all electrodes.

[0028] Furthermore, if the position of individual electrodes needs to be adjusted during the signal acquisition process, first execute steps S6 and S7 to remove the corresponding electrodes, then execute steps S1-S4 to re-fix the electrodes at the new positions, and then perform signal acquisition operations. This is not affected by the fixed opening limit of the traditional electrode cap, and there is no need to adjust all the electrodes.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1) The present invention utilizes the good stability of hair to attach electrodes to hair bundles, and replaces the traditional EEG cap with hair, so that the subjects no longer need to wear a bulky EEG cap, which is easy to carry and use, and solves the problems of inconvenience in wearing and difficulty in cleaning caused by the original EEG cap;

[0031] 2) The present invention uses the subject's hair bundle as an electrode fixing support, so that the entire hair area itself can be regarded as a natural EEG cap, and the EEG cap grows on the subject's head and is in close contact with the scalp. The EEG signal collected during the collection process has high clarity and reduces impedance, which can greatly improve the accuracy of detection;

[0032] 3) The electrodes of the present invention adopt a free positioning and channel number selection method without position limitation and channel number limitation. Since the hair is evenly distributed and generally covers the entire scalp, the installation position of the electrodes will not be restricted by the traditional EEG cap when collecting signals. At the same time, since hair bundles penetrate the electrodes, it is relatively simple to replace the position of individual electrodes, which is not affected by the fixed openings of the traditional electrode caps. It is convenient to add or reduce electrodes during the collection process. There is no need to take off all the electrode caps for adjustment. The corresponding electrodes only need to be put on or pulled off through the hair bundles, which is convenient for adjustment.

[0033] 4) The present invention adopts a brand-new collection method, which mainly relies on the subject's hair for fixation and takes the hair root as the collection point. The original electrode is designed as a cylindrical horn base with a reserved cavity in the middle. After passing through the hair bundle, the new cylindrical electrode continues to be pushed to the bottom of the hair root and is tightly connected to the scalp. At the same time, a coupling agent is injected into the cavity to completely seal the bottom area of ​​the hair root with the cylindrical electrode horn. Since the cylindrical electrode itself is made of metal and fits tightly with the hair root scalp, it is double-protected by a liquid coupling agent oil seal to ensure the continuity and goodness of the electrical conduction, greatly improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the electrode structure of the present invention;

[0035] Figure 2 This is the general appearance diagram of the electrode of the present invention;

[0036] FIG3 is a schematic diagram of the steps for using the electrode of the present invention, wherein FIG3a (a) to FIG3e (b) are schematic diagrams of steps S2, S3, S4, S6, and S7, respectively.

[0037] Figure 4 It is a schematic diagram of the structure of the fixed component;

[0038] Figure 5 This is a schematic diagram of the installation of the fixed components;

[0039] Figure 6 It is a schematic diagram of the installation plane of the fixed components.

[0040] Among them, 1. hair bundle, 2. scalp, 3. sleeve, 31. cylinder, 32. contact part, 33. annular clamp and part, 4. electrode wire, 5. coupling agent, 6. fixing component, 61. annular base, 62. strip protrusion, 63. elastic sheet, 631, limiting part. DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should belong to the scope of protection of the present invention.

[0042] Example

[0043] Although human hair cannot directly conduct electricity, the sleeve-type EEG measurement electrode of the present invention mainly uses the subject's hair as a natural fixing method, and relies on and utilizes the characteristics of the subject's hair roots and scalp being closely attached, so that the EEG signals collected during the collection process have higher clarity and lower impedance. The present invention strives to be light in appearance and pursues the concept of human-machine integration, presenting the new electrode in the form of a female hairpin, changing the previous bulky and unsightly design of wearing an EEG cap.

[0044] like Figure 1 and Figure 2 As shown, the present invention discloses a sleeve-type electroencephalogram measuring electrode, which is fixedly installed on the scalp 2 through a hair bundle 1, and comprises a sleeve 3, an electrode wire 4 and a coupling agent 5. The sleeve 3 is a sleeve structure with two ends opened, and the electrode wire 4 is connected to the sleeve 3. When the electrode is installed on the scalp 2, the hair bundle 1 is inserted into the inner cavity of the barrel of the sleeve 3, one end of the sleeve 3 is in close contact with the scalp 2, the coupling agent 5 is filled in the inner cavity of the barrel of the sleeve 3, an oil seal is formed between the root area of ​​the hair bundle 1 and the sleeve 3, and the sleeve 3 and the hair bundle 1 fix the electrode through contact friction.

[0045] The sleeve 3 includes a body 31 and a contact portion 32. The metal cylindrical body 31 is the main body, and the middle part is a cavity. In this embodiment, the diameter of the cavity is set to 3 cm. The lower part of the body 31 that contacts the hair roots and scalp is a trumpet-shaped contact portion 32, which is conducive to better adsorption on the subject's scalp. In this embodiment, the total height of the sleeve 3 is 5 cm, and the outer body is directly connected to the electrode wire 4. When the electrode is installed on the scalp 2, the bottom of the contact portion 32 is in close contact with the scalp 2.

[0046] The collecting position and principle of the electrode of the present invention are as follows: the trumpet mouth at the bottom of the sleeve 3 is sucked on the surface of the scalp 2, and the hair root of the hair bundle 1 passes through the middle cavity. After the fixation is completed, the coupling agent 5 is injected into the cavity to play the role of oil seal. The barrel 31 passes through the hair bundle 1 to play the role of fixing the electrode. The close contact between the trumpet-shaped contact part 32 and the scalp 2 is the main signal collection method. The cavity oil seal coupling agent plays two roles: one is to ensure that the electrode will not be separated from the scalp; the other is that the oil seal plays an enhanced conductive effect. In addition, in order to increase the contact effect between the bottom of the electrode and the scalp, a protruding nipple can be added to the bottom ring to increase the collection effect.

[0047] The invention is easy to put on and take off and is beautiful (similar to the small bun used by women). It does not require a headgear and will not get stuck in the neck when worn for a long time. The coupling agent 5 added to the inner cavity flows directly along the hair to the hair root, making the conductive effect better. The electrode position can be freely determined without being restricted by the position of the fixed EEG cap. The user does not need to shave his hair, and it is more suitable for subjects with long hair.

[0048] like Figure 4-Figure 6As shown, in order to improve the fixing effect of the electrode, the present invention further provides a fixing component 6, which is arranged on the sleeve 3 and used to fix the electrode. The fixing component 6 includes an annular base 61 and an elastic sheet 63. A plurality of elastic sheets 63 are provided, and the bottom thereof is arranged in an arc shape on the circumference of the annular base 61. The plurality of elastic sheets 63 are arranged in sequence along the circumference of the annular base 61 to form a blooming-shaped cylinder with a fixed lower end and a gradually expanding upward opening. The elastic sheet 61 has a radial elastic restoring force. A strip-shaped protrusion 62 is provided at the inner upper part of the elastic sheet 63. When the electrode is installed on the scalp 2, the strip-shaped protrusion 62 cooperates to clamp the hair bundle 1. An annular clip and part 33 is provided at the end surface of the cylinder 31 away from the contact part 32. The annular clip and part 33 forms a fixing component mounting hole at the end of the cylinder 31. The fixing component 6 is sleeved in the fixing component mounting hole. The diameter of the fixing component mounting hole is larger than the diameter of the lower end of the blooming-shaped cylinder surrounded by the plurality of elastic sheets 63, and smaller than the diameter of the upper end opening of the blooming-shaped cylinder.

[0049] In addition, the outer diameter of the annular base 61 is larger than the diameter of the fixing assembly mounting hole, which plays a limiting role in the upward pulling process to ensure that the fixing assembly 6 does not fall out of the sleeve 3. A limiting portion 631 is also provided on the upper part of each elastic sheet 63 to play a limiting role in the downward pressing process.

[0050] When the electrode is installed on the scalp 2, the hair bundle 1 passes through the blooming-shaped cylinder surrounded by the annular base 61 and multiple elastic sheets 63 in sequence. When the contact portion 32 is in close contact with the scalp 2 and the coupling agent 5 is filled, the fixing component 6 is pressed into the direction of the cylinder 31. The multiple elastic sheets 63 shrink inwardly under the action of the annular clamping portion 33. It is preferred that the annular clamping portion 33 and the strip protrusion 62 are set in the same plane. At this time, the multiple elastic sheets shrink toward the center from different directions, and each strip protrusion 62 cooperates to clamp the hair bundle 1. When the electrode is removed, the fixing component 6 is pulled out in the opposite direction of the cylinder 31, and the hair bundle 1 is loosened under the action of the elastic restoring force of the elastic sheet 61.

[0051] In this embodiment, the elastic sheet 63 is provided with two petals, which are symmetrically arranged with the upper opening being outward-shaped and having a certain elasticity when the two sides are pressed inwardly. After being loosened, the upper two petals naturally stretch outward. The hair bundle 1 is mainly restrained by the strip protrusion 62. The strip protrusion 62 is arranged around a half circle. When the fixing component 6 is pressed down, the two petals of the outward-shaped elastic sheet 63 begin to shrink inwardly, the upper opening begins to shrink inwardly, and at the same time, the inner strip protrusion 62 squeezes the hair bundle 1 inwardly, and is in a tightened state to achieve a fixing effect; when the fixing component 6 is lifted upward, the upper opening of the two petals of the outward-shaped elastic sheet 63 is naturally loosened outward and is in a relaxed state, and the strip protrusion 62 no longer squeezes the hair bundle 1, and is in a relaxed state.

[0052] Tightening state: When tightening is required, first pass the hair bundle 1 through the sleeve 3 and push it to the hair root position to confirm that it is fixed, then press down the position of the fixing component 6. After the hair bundle 1 is squeezed and tightened by the strip protrusion 62, try to shake the entire electrode to see if it is loose and whether the fixing component 6 slides out in the opposite direction.

[0053] Relaxed state: After the collection is completed, pull up the fixing component 6 until the strip protrusion 62 is loosened and the two elastic pieces 63 on the upper mouth of the entire fixing component 6 are loosened outward, indicating that it is in a relaxed state. It can be lifted up until the edge of the annular base 61 contacts the annular clamp and part 33, and reaches the limit position and cannot be pulled out, indicating that it is completely loosened and bound.

[0054] As shown in FIG3 , the present invention also provides a method for using the sleeve-type EEG measurement electrode, comprising the following steps:

[0055] S1: Select the scalp area where the electrode test needs to be installed. Specifically, select the corresponding collection area according to the collection requirements. In principle, the error of electrode position selection should be within 10% according to international standards;

[0056] S2: Select a hair bundle 1 in the corresponding area and insert it into the sleeve 3, as shown in FIG. (3a). Specifically, a certain amount of adjacent hair is selected to form the hair bundle 1. The hair bundle 1 should not be too much to prevent the sleeve 3 from being unable to be inserted, nor too little to prevent the sleeve 3 from slipping off. It is recommended to select the amount of hair that can be naturally inserted into the sleeve 3.

[0057] S3: Push the sleeve 3 along the hair bundle 1 from the hair tip to the bottom of the hair root, so that the sleeve 3 is in close contact with the scalp 2, as shown in FIG. (3b). Specifically, push the sleeve 3 along the hair bundle from the hair tip to the bottom of the hair root, and make it in close contact with the scalp 2;

[0058] S4: Inject coupling agent into the inner cavity of the sleeve 3 along the hair bundle 1, perform oil sealing and fix it, as shown in Figure (3c), specifically, inject coupling agent 5 into the central cavity of the sleeve 3, perform oil sealing, and ensure the conductivity between the electrode and the scalp at the same time;

[0059] S5: repeating steps S1-S4 to complete the installation of all electrodes, and then performing signal acquisition through the electrode wire 4, specifically, checking whether the electrode wire 4 is well connected, and starting corresponding signal acquisition;

[0060] S6: After the collection is completed, the fixing assembly is released, and the sleeve 3 is separated from the scalp 2, as shown in FIG. (3d). Specifically, the sleeve 3 is separated from the hair root, and when pulling out, attention is paid to the coupling agent 5 flowing out of the cavity of the oil seal;

[0061] S7: Slide the sleeve 3 along the hair bundle 1 to the end of the hair, and remove all the electrodes, as shown in Figure (3e). Specifically, slide the sleeve 3 along the hair bundle 1 to the end of the hair, remove the electrodes, and couple. 5 can play a lubricating role in this process to avoid pulling the hair when removing the electrodes.

[0062] Finally, use a small brush to directly clean the internal cavity of the sleeve 3. If the position of individual electrodes needs to be adjusted during the signal acquisition process, first perform steps S6 and S7 to remove the corresponding electrodes, then perform steps S1-S4 to re-fix the electrodes at the new positions, and then perform signal acquisition operations.

[0063] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A sleeve-type electroencephalogram measuring electrode, characterized in that: The electrode is fixedly mounted on the scalp (2) through a hair bundle (1), and comprises a sleeve (3), an electrode wire (4) and a coupling agent (5); the sleeve (3) is a sleeve structure with two ends open, and the electrode wire (4) and the sleeve (3); When the electrode is installed on the scalp (2), the hair bundle (1) is inserted into the inner cavity of the sleeve (3), one end of the sleeve (3) is in close contact with the scalp (2), the coupling agent (5) is filled in the inner cavity of the sleeve (3), an oil seal is formed between the root area of ​​the hair bundle (1) and the sleeve (3), and the sleeve (3) and the hair bundle (1) fix the electrode by contact friction; The sleeve (3) comprises a barrel (31) and a contact portion (32); the barrel (31) is a cylindrical cylinder with a cavity formed inside; the contact portion (32) is a trumpet-shaped contact portion disposed at the bottom of the barrel (31); the electrode lead (4) is connected to the barrel (31); when the electrode is mounted on the scalp (2), the bottom of the contact portion (32) is in close contact with the scalp (2); The electrode further comprises a fixing component (6), wherein the fixing component (6) is arranged on the barrel (31) and is used to contact and fix the electrode with the hair bundle (1) when the electrode is mounted on the scalp (2); The fixing assembly (6) comprises an annular base (61) and an elastic sheet (63), wherein a plurality of the elastic sheets (63) are provided, and the bottom of the elastic sheets (63) is arranged in an arc shape on the circumference of the annular base (61), and the plurality of elastic sheets (63) are arranged in sequence along the circumference of the annular base (61) to form a blooming-shaped cylinder with a fixed lower end and an upward opening that gradually expands, and the elastic sheet (63) has a radial elastic restoring force; When the electrode is installed on the scalp (2), the hair bundle (1) passes through the annular base (61) and the blooming-shaped cylinder surrounded by a plurality of elastic sheets (63) in sequence, and the plurality of elastic sheets (63) are respectively subjected to radially inward forces to cooperate and clamp the hair bundle (1) from different directions; when the electrode needs to be disassembled, the force applied to each elastic sheet (63) is removed, and the hair bundle (1) is loosened under the action of the elastic restoring force of the elastic sheet (63); A strip-shaped protrusion (62) is provided at the inner upper part of the elastic sheet (63); when the electrode is installed on the scalp (2), the strip-shaped protrusion (62) cooperates to clamp the hair bundle (1); An annular clip and part (33) is provided at the end surface of one end of the cylinder (31) away from the contact part (32), and the annular clip and part (33) forms a fixing component mounting hole at the end of the cylinder (31), and the fixing component (6) is sleeved in the fixing component mounting hole.

2. A sleeve-type electroencephalogram measuring electrode according to claim 1, characterized in that: The height of the sleeve (3) is 5 cm, and the diameter of the inner cavity of the cylinder (31) is 3 cm.

3. The sleeve-type EEG measurement electrode according to claim 1, characterized in that: The diameter of the fixing assembly installation hole is larger than the diameter of the lower end of the blooming-shaped cylinder surrounded by a plurality of elastic sheets (63), and smaller than the diameter of the upper end opening of the blooming-shaped cylinder; When the electrode needs to be fixed on the scalp (2), the fixing assembly (6) is pressed in the direction of the barrel (31), and the plurality of elastic sheets (63) are contracted inwardly under the action of the annular clamping portion (33), thereby clamping the hair bundle (1) from different directions; when the electrode needs to be removed, the fixing assembly (6) is pulled out in the opposite direction of the barrel (31), and the hair bundle (1) is loosened under the action of the elastic restoring force of the elastic sheets (63).

4. A method for using the sleeve-type EEG measurement electrode according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1: Select the scalp area where the electrode test needs to be installed; S2: Select a hair bundle (1) in a corresponding area and insert it into the sleeve (3); S3: Push the sleeve (3) along the hair bundle (1) from the hair tip to the bottom of the hair root, so that the sleeve (3) is in close contact with the scalp (2); S4: injecting coupling agent into the inner cavity of the sleeve (3) along the hair bundle (1) to perform oil sealing and fixation; S5: repeating steps S1-S4 to complete the installation of all electrodes, and then performing signal acquisition through the electrode wire (4); S6: After the collection is completed, the fixing component is released, and the sleeve (3) is separated from the scalp (2); S7: Slide the sleeve (3) along the hair bundle (1) to the end of the hair, and remove all the electrodes.

5. The method for using a sleeve-type electroencephalogram measuring electrode according to claim 4, characterized in that: If the position of individual electrodes needs to be adjusted during the signal acquisition process, first perform steps S6 and S7 to remove the corresponding electrodes, then perform steps S1-S4 to re-fix the electrodes at the new positions, and then perform the signal acquisition operation.

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