CN210124760U - Electroencephalogram signal acquisition electrode capable of quickly reducing impedance - Google Patents

Abstract

The utility model discloses an electroencephalogram signal collecting electrode capable of quickly reducing impedance. The electroencephalogram signal collecting electrode capable of rapidly reducing impedance comprises an electrode bowl, an electrode piece and an adjusting handle. The electrode bowl is suitable for being connected with the electroencephalogram signal acquisition cap and is provided with a matching hole; the electrode piece is slidably arranged in the electrode bowl matching hole, one end of the electrode piece is provided with a frosted surface and can extend out of and retract into the matching hole, and the electrode piece is provided with an injection through hole which is communicated from one end to the other end and used for injecting the conductive paste. The adjusting handle is sleeved on the other end of the electrode piece and is provided with an injection hole communicated with the injection through hole. But brain electrical signal collection electrode of fast lowering resistance can convenient and fast ground get rid of by the experimenter head skin cutin, can also conveniently make the electrode piece pass the head hair of experimenter to head hair has been avoided the harmful effects of brain electrical signal collection high-efficiently. Furthermore, the utility model discloses an electroencephalogram signal collecting electrode's simple structure, low in production cost.

Description

Electroencephalogram signal acquisition electrode capable of quickly reducing impedance

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an electroencephalogram signal collecting electrode of resistance can fast descend.

Background

The electroencephalogram collection and analysis technology plays a vital role in modern neuroscience research. In the process of acquiring the electroencephalogram signals, the impedance between the electroencephalogram electrodes and the skin of the head of the tested person directly influences the signal-to-noise ratio of the acquired signals and the subsequent signal analysis result. The high impedance between the brain electrode and the skin of the head of the testee is mainly caused by the horny layer of the skin of the head of the testee and the hair of the head.

The existing traditional electroencephalogram electrode generally needs to use scrub cream or alcohol to remove the stratum corneum at the position of the head skin where the electrode is to be placed before use, and the conductive paste is used for communicating the electrode with the head skin of a testee. Some brain electrodes take the influence of head hair on impedance into consideration, and a plurality of metal or nonmetal claws are designed to penetrate through the head hair to contact the skin of the head or pull the head hair apart. Because the stratum corneum of the skin of the tested head needs to be removed in advance by the traditional electroencephalogram electrode, and the electrode and the skin of the head need to be communicated by depending on conductive paste. The two parts of working processes are time-consuming, especially in the presence of the existing 64-lead and higher 128-lead electroencephalogram equipment, the time consumed for adjusting the impedance not only can seriously affect the electroencephalogram detection efficiency, but also can reduce the acceptance degree of a testee on electroencephalogram detection, thereby directly affecting the possibility of implementation and the detection effect of electroencephalogram detection. A small number of multi-claw electroencephalogram electrodes considering the influence of head hair are too complex in design structure, the head hair can be clamped when the electrodes are taken down, and in addition, the manufacturing cost of the electrodes is greatly increased due to the complex design. In order to solve the problems, an electroencephalogram signal collecting electrode which is low in cost, reasonable in structure and capable of quickly reducing impedance is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an EEG signal acquisition electrode that can reduce impedance fast. The electroencephalogram signal collecting electrode capable of quickly reducing the impedance is simple in structure and convenient to operate, and can guarantee low cost while guaranteeing the quick reduction of the impedance.

The EEG signal acquisition electrode capable of rapidly reducing impedance according to the embodiment of the utility model comprises; the electrode bowl is suitable for being connected with the electroencephalogram signal acquisition cap and is provided with a matching hole; the electrode piece is slidably arranged in the matching hole, one end of the electrode piece is provided with a frosted surface and can extend out of and retract into the matching hole, and the electrode piece is provided with an injection through hole which is communicated from one end to the other end and used for injecting the conductive paste; the adjusting handle is sleeved on the other end of the electrode piece, and an injection hole communicated with the injection through hole is formed in the adjusting handle.

According to the utility model discloses can fall electroencephalogram signal acquisition electrode of impedance fast because the one end of electrode piece has the frosting, and the one end movably cooperation of electrode piece is in the electrode bowl, can comparatively convenient and fast get rid of testee head skin cutin, can also make the electrode piece pass the testee's head hair comparatively conveniently to head hair has been avoided the harmful effects of electroencephalogram signal acquisition high-efficiently. Furthermore, the utility model discloses but the structure of the EEG signal acquisition electrode of fast decline impedance is comparatively simple, and manufacturing cost is lower.

In some embodiments, the pole element comprises: the sanding device comprises an electrode tip and an electrode column connected with the electrode tip, wherein a frosted surface is formed at one end, far away from the electrode column, of the electrode tip, the electrode column is connected with an adjusting handle, and the cross section size of the electrode tip in the direction perpendicular to the sliding direction is larger than that of the electrode column in the direction perpendicular to the sliding direction.

In some specific embodiments, the electrode head is formed into a cylinder, the end surface of the cylinder is the frosted surface, and the frosted surface is an arc surface.

In some alternative embodiments, the frosted surface is a portion of a sphere.

In some embodiments, the fitting hole is formed as a tapered hole having a gradually increasing cross-section in a direction away from the adjustment handle, or the fitting hole is formed as a stepped hole having an increasing cross-section in a direction away from the adjustment handle.

In some more specific embodiments, the fitting hole is a circular hole, the electrode member has a circular sectional shape perpendicular to the sliding direction, the fitting hole has a minimum diameter larger than the diameter of the electrode column and smaller than the diameter of the electrode tip, and a maximum diameter larger than the diameter of the electrode tip.

In some embodiments, the outer peripheral wall of the electrode bowl is provided with an annular matching groove, and the matching groove is suitable for being matched with the electroencephalogram signal acquisition cap.

In some embodiments, the peripheral wall of the adjusting handle is provided with a signal wire reserved through hole.

In some embodiments, the electrode bowl is a silicone piece.

In some embodiments, the diameter of the injection through hole is 2mm or less, and the diameter of the injection hole is 2mm or more.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of the whole structure of the electroencephalogram signal collecting electrode capable of rapidly reducing impedance according to the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the initial state of the electroencephalogram signal collecting electrode capable of rapidly reducing impedance according to the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the working state of the electroencephalogram signal collecting electrode capable of rapidly reducing impedance according to the embodiment of the present invention.

Fig. 4 is a cross-sectional view of the electroencephalogram signal collecting electrode capable of rapidly reducing impedance according to the embodiment of the present invention.

Reference numerals:

an electroencephalogram signal collecting electrode 100 capable of quickly reducing impedance,

Electrode part 1, frosted surface S

An electrode head 11, an electrode column 12, an injection through hole 13,

An electrode bowl 2,

A matching hole 21, a matching groove 22,

The adjusting handle 3, the signal wire reserved through hole 31 and the injection hole 32.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following describes an electroencephalogram signal collecting electrode 100 capable of rapidly reducing impedance according to an embodiment of the present invention with reference to fig. 1 to 4.

As fig. 1, fig. 4 shows, according to the utility model discloses but electroencephalogram signal acquisition electrode 100 of fast decline impedance includes electrode bowl 2, electrode component 1 and adjustment handle 3, electrode bowl 2 is suitable for and links to each other with electroencephalogram signal acquisition cap, electrode bowl 2 has mating holes 21, electrode component 1 slidable is established in mating holes 21, electrode component 1 'S one end has frosting S and protractile and withdrawal mating holes 21, electrode component 1 is last to have the injection through-hole 13 that is used for injecting the electrically conductive cream that link up to the other end by one end, adjustment handle 3 covers establishes on electrode component 1' S the other end, be equipped with on adjustment handle 3 and pour into the injection hole 32 that through-hole 13 is linked together.

It should be noted that, as shown in fig. 2 to fig. 3, the electroencephalogram signal collecting electrode 100 capable of rapidly reducing impedance according to the embodiment of the present invention has two states, in one state, the end of the electrode member 1 having the frosted surface S retracts into the fitting hole 21 on the electrode bowl 2, and in another state, the end of the electrode member 1 having the frosted surface S extends out of the fitting hole 21 on the electrode bowl 2. According to the position of the end of the electrode element 1 having the frosted surface S in the two states, the first state can be defined as the initial state and the second state can be defined as the working state.

It can be understood that, under the operating condition, through rotating and swing adjustment handle 3, help electrode 1 to pass the head hair and impel to the person under test' S head skin direction, until electrode 1 front end pass with the skin contact of the head of being examined, after contacting the skin of the head, continue to swing electrode 1 gently, the one end that has electrode 1 and frosting S can get rid of the skin stratum corneum of the head of being examined in certain extent, and this process can be accomplished simultaneously to a plurality of electrode 1 to many people. Then, the conductive paste injector is inserted into the injection through hole 13 of the electrode piece 1 and a proper amount of conductive paste is injected, so that the electroencephalogram paste seeps out from one end of the electrode piece 1 with the frosted surface S, the electrode piece and the contacted head skin are soaked in the conductive paste, the front end of the electrode piece 1 is helped to be better contacted with the head skin of a testee, and electroencephalogram signal acquisition can be started. And finally, after the electroencephalogram signal acquisition is finished, resetting the electrode element 1 to the initial state, and cleaning and wiping the electrode element.

The utility model discloses but electroencephalogram signal acquisition electrode 100 of fast decline impedance is in the course of the work, and the one end of electrode spare 1 has frosted surface S for can get rid of head skin stratum corneum after electrode spare 1 location. Therefore, on one hand, the time consumption caused by the step of removing the cuticle of the skin of the head to be tested by using the scrub cream before the electroencephalogram signal collecting electrode 100 capable of quickly reducing the impedance is positioned can be avoided, on the other hand, the cuticle can be removed in a smaller range of the position of the electrode in a more targeted manner after the electroencephalogram signal collecting electrode 100 capable of quickly reducing the impedance is positioned, and the test acceptance is facilitated. In addition, adjustment handle 3 can the person of facilitating the use drive electrode 1 and slide in the mating holes 21 of electrode bowl 2 to can make things convenient for the swing and the rotation of electrode 1, the one end that help electrode 1 have frosting S passes head hair smoothly, reaches testee head skin, can avoid the influence that head hair produced signal acquisition high-efficiently.

Furthermore, the utility model discloses can fall electroencephalogram signal acquisition electrode 100 of impedance fast only includes electrode bowl 2, electrode piece 1 and adjustment handle 3, for prior art's multi-jaw electroencephalogram electrode, the utility model discloses can fall electroencephalogram signal acquisition electrode 100 of impedance fast's simple structure, manufacturing cost is lower.

According to the utility model discloses can fall electroencephalogram signal acquisition electrode 100 of impedance fast, because the one end of electrode part 1 has frosted surface S, and electrode part 1 'S one end movably cooperates in electrode bowl 2, can get rid of testee head skin cutin comparatively convenient and fast ground, can also make electrode part 1 pass the testee' S head hair comparatively conveniently to head hair has been avoided the harmful effects of electroencephalogram signal acquisition high-efficiently. Furthermore, the utility model discloses but the structure of the EEG signal acquisition electrode 100 of fast decline impedance is comparatively simple, and manufacturing cost is lower.

In some embodiments, as shown in fig. 1, the electrode member 1 includes an electrode head 11 and an electrode column 12 connected to the electrode head 11, a frosted surface S is formed on an end of the electrode head 11 remote from the electrode column 12, the electrode column 12 is connected to the adjustment handle 3, and a sectional dimension of the electrode head 11 perpendicular to the sliding direction is larger than a sectional dimension of the electrode column 12 perpendicular to the sliding direction. It can be understood that the sectional dimension of the electrode head 11 is larger than that of the electrode column 12 in the direction perpendicular to the sliding direction, so that the contact part of the electrode piece 1 and the head of the human subject is thicker, the pricking feeling of the electrode piece 1 to the human subject is reduced, and the human subject is more favorably accepted. In addition, because the size of the electrode head 11 is large, the cutin of the relatively large area of the head of the testee can be removed in a working state, and the impedance is further reduced, so that the detection precision of the electroencephalogram signal collecting electrode 100 capable of quickly reducing the impedance is improved. Of course, in the embodiment of the present invention, the dimensions of the electrode head 11 and the electrode column 12 perpendicular to the sliding direction may also be the same.

In some specific embodiments, the electrode tip 11 is formed in a substantially cylindrical shape, and the end surface of the cylindrical shape is a frosted surface S, and the frosted surface S is an arc surface. It can be understood that the cylindrical electrode tip 11 can slide relative to the electrode bowl 2 more smoothly, so as to ensure the convenience of the electroencephalogram signal collecting electrode 100 capable of quickly reducing the impedance. In addition, the formation of the frosted surface S as a curved surface is advantageous to reduce the pain feeling of the subject when the electrode tip 11 removes the cutin, thereby being more acceptable to the subject.

In some alternative embodiments, the frosting surface S is a portion of a sphere. This can further reduce the pain of the subject when the tip 11 removes the cutin.

Of course, it should be noted that the shapes of the electrode tip 11, the electrode column 12 and the frosted surface S are not limited to the above, and the specific shapes of the electrode tip 11, the electrode column 12 and the frosted surface S can be adjusted according to actual requirements.

In some embodiments, the fitting hole 21 is formed as a tapered hole having a gradually increasing cross section in a direction away from the adjustment handle 3. It can be understood that the fitting hole 21 is formed as a tapered hole whose boundary surface gradually increases in a direction away from the adjustment handle 3, on the one hand, smooth sliding of the electrode tip 11 at the large end of the fitting hole 21 and smooth sliding of the electrode post 12 at the small end of the fitting hole 21 are ensured, and on the other hand, a phenomenon in which the electrode tip 11 slips out of the small end of the fitting hole 21 is prevented to some extent.

In some alternative embodiments, as shown in fig. 4, the fitting hole 21 is formed as a stepped hole with a gradually increasing cross section in a direction away from the adjustment handle 3, and it can be understood that the fitting hole 21 is formed as a stepped hole with a gradually increasing interface in a direction away from the adjustment handle 3, on one hand, smooth sliding of the electrode tip 11 at the large end of the fitting hole 21 and smooth sliding of the electrode column 12 at the small end of the fitting hole 21 are ensured, and on the other hand, a phenomenon that the electrode tip 11 slides out of the small end of the fitting hole 21 is prevented to some extent.

In some more specific embodiments, the fitting hole 21 is a circular hole, the cross-sectional shape of the electrode element 1 perpendicular to the sliding direction is circular, the minimum diameter of the fitting hole 21 is larger than the diameter of the electrode column 12 and smaller than the diameter of the electrode tip 11, and the maximum diameter of the fitting hole 21 is larger than the diameter of the electrode tip 11. Therefore, on one hand, the phenomenon that the electrode tip 11 slides out of the small end of the matching hole 21 is well avoided, and on the other hand, the electrode element 1 is convenient to insert into the electrode bowl 2 from the large end of the matching hole 21.

Of course, it should be noted here that the specific shape of the fitting hole 21 may be selected according to the specific shapes of the electrode tip 11 and the electrode column 12 and is not limited to a circular hole.

In some embodiments, as shown in fig. 1, the outer peripheral wall of the electrode bowl 2 is provided with an annular fitting groove 22, and the fitting groove 22 is suitable for fitting with the electroencephalogram signal acquisition cap. It can be understood that the matching groove 22 can help the whole electroencephalogram signal collecting electrode 100 capable of quickly reducing impedance to be positioned at the electroencephalogram lead position designated by the electroencephalogram cap, and the actual practicability of the electroencephalogram signal collecting electrode 100 capable of quickly reducing impedance is facilitated. The shape of the signal wire reserved matching groove 22 is not limited, and the shape of the matching groove 22 can be adjusted according to the specific structure of the electroencephalogram signal acquisition cap.

In some embodiments, as shown in fig. 1, the outer peripheral wall of the adjustment handle 3 is provided with a signal conductor reservation through hole 31. It can be understood that the signal wire of the electrode element 1 can penetrate out of the signal wire reserved through hole 31, and therefore, the signal collected by the electrode element 1 can be stably transmitted in related instruments. The shape of the signal wire reserved through hole 31 is not limited, and the shape of the signal wire reserved through hole 31 may be determined according to parameters such as the diameter and the number of the signal wires.

In some embodiments, the electrode bowl 2 is a silicone piece. Therefore, the electrode bowl 2 is convenient to be matched with the electroencephalogram signal acquisition cap, and the electrode piece 1 is convenient to be matched with the electrode bowl 2.

In some embodiments, the diameter of the injection through hole 13 is 2mm or less, and the diameter of the injection hole 32 is 2mm or more. It can be understood that the oversize of the injection through hole 13 can cause the sizes of the electrode element 1 and the adjusting handle 3 to be relatively increased, so that the production cost of the whole electroencephalogram signal collecting electrode 100 capable of rapidly reducing the impedance is increased, and therefore, the diameter of the injection through hole 13 is controlled within 2 mm. And the diameter of injection hole 32 more than or equal to 2mm then can make things convenient for the syringe to insert to the convenience gets into the injection passageway 13 with the conductive paste injection, in the utility model discloses a other embodiments, the shape and the size of injecting through-hole 13 and injection hole 32 can make the selection according to actual need.

Example (b):

the following describes the electroencephalogram signal collecting electrode 100 capable of rapidly reducing impedance according to an embodiment of the present invention with reference to fig. 1 to 4.

As shown in fig. 1, the electroencephalogram signal collecting electrode 100 capable of rapidly reducing impedance in this embodiment includes an electrode bowl 2, an electrode member 1 and an adjusting handle 3, the electrode bowl 2 is suitable for being connected with an electroencephalogram signal collecting cap, the electrode bowl 2 has a matching hole 21, the electrode member 1 is slidably arranged in the matching hole 21, one end of the electrode member 1 has a frosted surface S and can extend out and retract into the matching hole 21, the electrode member 1 is provided with an injection through hole 13 which is used for injecting conductive paste and is through from one end to the other end, the adjusting handle 3 is sleeved on the other end of the electrode member 1, and the adjusting handle 3 is provided with an injection hole 32 communicated with the injection through hole 13.

The electrode member 1 comprises an electrode head 11 and an electrode column 12 connected with the electrode head 11, wherein the electrode head 11 is made of a metal material, and the electrode column 12 can be made of a conductive metal or a non-metal material. The frosted surface S is formed on one end of the electrode tip 11 far from the electrode column 12, the electrode column 12 is tightly combined with the adjustment handle 3 through friction, the electrode tip 11 and the electrode column 12 are generally formed into a cylinder, the end surface of the electrode tip 11 is the frosted surface S, the diameter of the electrode column 12 is 4mm, the diameter of the injection through hole 13 is 2mm, and the maximum diameter of the electrode tip 11 is 6 mm.

The electrode bowl 2 is a silica gel piece, and the peripheral wall of the electrode bowl 2 is provided with an annular matching groove 22 to help the whole electroencephalogram signal collecting electrode 100 capable of quickly reducing impedance to be positioned at the electroencephalogram lead position appointed by the electroencephalogram signal collecting cap. The fitting hole 21 is formed as a stepped hole having a gradually increasing cross section in a direction away from the adjustment handle 3, and the minimum diameter of the stepped hole is 4mm and the maximum diameter of the stepped hole is 6 mm. The outer peripheral wall of the electrode bowl 2 is provided with an annular matching groove 22, and the matching groove 22 is suitable for being matched with the electroencephalogram signal acquisition cap. The adjusting handle 3 is made of insulating materials, the outer diameter of the adjusting handle is 4mm, a signal conducting wire reserved through hole 31 is formed in the outer peripheral wall of the adjusting handle 3, an injection hole 32 connected with the injection through hole 13 is formed in the adjusting handle 3, and the diameter of the injection hole 32 is 2 mm.

The electroencephalogram signal collecting electrode 100 capable of quickly reducing impedance of the embodiment has the following advantages:

1. through the electrode tip 11 with frosted surface S at the front end of the electrode column 12, the skin cuticle of the head can be locally removed after the electroencephalogram signal collecting electrode 100 capable of quickly reducing impedance is positioned. On one hand, the time consumption caused by the step of removing the cuticle of the skin of the tested head by using the scrub cream before positioning can be avoided; on the other hand, the cutin can be removed in a smaller range of the position of the electrode tip 11 in a more targeted manner after positioning, and the test acceptance is facilitated.

2. Because the electrode part 1 can slide in the mating hole 21 of the silica gel electrode bowl 2, and the swing and the rotation of the electrode part 1 can be realized by the adjusting handle 3 at the tail part of the electrode part 1, the electrode tip 11 at the front end of the electrode part 1 can smoothly pass through the head hair to reach the skin of the head of a testee, and the influence of the head hair on signal acquisition can be efficiently avoided.

3. Simple structure, the operation is convenient, when guaranteeing fast descending impedance, can guarantee lower cost again.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electroencephalogram signal acquisition electrode capable of quickly reducing impedance is characterized by comprising;

the electrode bowl is suitable for being connected with the electroencephalogram signal acquisition cap and is provided with a matching hole;

the electrode piece is slidably arranged in the matching hole, one end of the electrode piece is provided with a frosted surface and can extend out of and retract into the matching hole, and the electrode piece is provided with an injection through hole which is communicated from one end to the other end and used for injecting the conductive paste;

the adjusting handle is sleeved on the other end of the electrode piece, and an injection hole communicated with the injection through hole is formed in the adjusting handle.

2. The EEG signal collecting electrode with rapid impedance reduction according to claim 1, wherein said electrode member comprises: the sanding device comprises an electrode tip and an electrode column connected with the electrode tip, wherein a frosted surface is formed at one end, far away from the electrode column, of the electrode tip, the electrode column is connected with an adjusting handle, and the cross section size of the electrode tip in the direction perpendicular to the sliding direction is larger than that of the electrode column in the direction perpendicular to the sliding direction.

3. The EEG signal collecting electrode capable of rapidly reducing impedance according to claim 2, wherein the electrode tip is formed into a cylinder, the end surface of the cylinder is the frosted surface, and the frosted surface is an arc surface.

4. The EEG electrode capable of rapidly reducing impedance according to claim 3, wherein the frosted surface is a portion of a sphere.

5. The EEG signal collecting electrode capable of rapidly reducing impedance according to claim 2, wherein the fitting hole is formed as a tapered hole having a gradually increasing cross section in a direction away from the adjustment handle, or formed as a stepped hole having an increasing cross section in a direction away from the adjustment handle.

6. The EEG electrode capable of rapidly reducing impedance according to claim 5, wherein the fitting hole is a circular hole, the cross-sectional shape of the electrode element in the direction perpendicular to the sliding direction is circular, the minimum diameter of the fitting hole is larger than the diameter of the electrode column and smaller than the diameter of the electrode tip, and the maximum diameter of the fitting hole is larger than the diameter of the electrode tip.

7. The EEG signal collecting electrode capable of rapidly reducing impedance according to claim 1, wherein an annular matching groove is formed in the outer peripheral wall of the electrode bowl, and the matching groove is suitable for being matched with the EEG signal collecting cap.

8. The EEG electrode capable of rapidly reducing impedance according to claim 1, wherein a signal wire reserved through hole is formed in the outer peripheral wall of the adjusting handle.

9. The EEG signal collecting electrode capable of rapidly reducing impedance according to any one of claims 1-8, wherein the electrode bowl is a silica gel piece.

10. The EEG signal collecting electrode capable of rapidly reducing impedance according to any one of claims 1-8, wherein the diameter of the injection through hole is less than or equal to 2mm, and the diameter of the injection hole is greater than or equal to 2 mm.

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