CN220442667U - Hydrogel electrode and hydrogel electrode headband - Google Patents

Abstract

The utility model discloses a hydrogel electrode and a hydrogel electrode headband, wherein the hydrogel electrode comprises an electrode inner shell, an electrode outer shell, hydrogel and an electrode buckle; the electrode inner shell is detachably arranged in the electrode outer shell; the electrode inner shell is opened towards one end of the electrode outer shell and is internally provided with a containing cavity; the hydrogel is arranged in the accommodating cavity; the other end of the electrode inner shell is provided with the electrode buckle. A hydrogel electrode headband includes the hydrogel electrode. The hydrogel electrode and the hydrogel electrode head band disclosed by the utility model have the advantages that the hydrogel is directly contacted with the skin of a person to be collected when the electroencephalogram signals are collected, the hydrogel material can be non-toxic, soft and in certain viscosity contact with the skin of the person to be collected, the hydrogel can be electrically conductive without injecting conductive paste or saline after being contacted with the skin of the person to be collected, the operation is simple and convenient, and the problems that the contact between the electrode and the scalp is poor and the electroencephalogram signal collection effect is influenced in the background technology are solved.

Description

Hydrogel electrode and hydrogel electrode headband

Technical Field

The utility model belongs to the field of brain wave monitoring equipment, and particularly relates to a hydrogel electrode and a hydrogel electrode head band.

Background

At present, 80% of electroencephalogram signal acquisition uses a conductive paste electrode cap, a tested person needs to wash his head before an experiment, then the main test wears the electrode cap on the tested person, then conductive paste is injected at each electrode position, and the contact resistance between each electrode and the scalp is reduced one by observing an impedance detection interface screen of electroencephalogram acquisition software. And it takes 30 minutes to 60 minutes to wear the cap during this process, which is particularly time-consuming.

The patent with publication number of CN107582052A discloses a brine electrode cap, which comprises an elastic cap body and a plurality of brine electrodes arranged on the cap body, wherein an electrode base can be inserted into an electrode positioning hole on the cap body, and brine is injected into the top of a sponge head to lead a sponge column to be conducted. The method has the defects that saline needs to be injected before use, and the operation is not simple and convenient. The shape of the electrode cap wraps the whole head, so that the electrode cap can be tightly stretched to cause discomfort of the wearer, or can be in poor contact with the scalp due to mismatching of the sizes, and the electroencephalogram signal acquisition effect is affected.

Disclosure of Invention

The utility model aims to provide a hydrogel electrode and a hydrogel electrode head band, which solve the problems that in the background technology, the electrode head is in poor contact with the scalp, and the acquisition effect of brain electrical signals is affected.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a hydrogel electrode comprises an electrode inner shell, an electrode outer shell, hydrogel and an electrode buckle; the electrode inner shell is detachably arranged in the electrode outer shell; the electrode inner shell is opened towards one end of the electrode outer shell and is internally provided with a containing cavity; the hydrogel is arranged in the accommodating cavity; the other end of the electrode inner shell is provided with the electrode buckle.

The hydrogel electrode disclosed by the utility model has the advantages that the hydrogel is directly contacted with the skin of a person to be collected when the electroencephalogram signals are collected, the hydrogel material can be in non-toxic, soft and sticky contact with the skin of the person to be collected, the hydrogel can be electrically conductive without injecting conductive paste or saline after being contacted with the skin of the person to be collected, the operation is simple and convenient, and the problems that the contact between the electrode surface and the scalp is poor and the electroencephalogram signal collection effect is influenced in the background technology are solved.

Preferably, the hydrogel electrode further comprises a conductive sheet; the conducting strip is arranged between the hydrogel and the electrode buckle, the hydrogel contacts the conducting strip, and the conducting strip is connected with the electrode buckle.

Preferably, a positioning column is arranged at one end of the conducting strip facing the electrode buckle; a connecting hole is formed in one end, facing the conducting strip, of the electrode buckle; the other end of the electrode inner shell is provided with a positioning hole; the connecting hole is communicated with the positioning hole; the positioning column is positioned in the connecting hole and the positioning hole.

Preferably, the other end of the conductive sheet is fixedly connected with the hydrogel.

Preferably, one end of the electrode buckle facing the electrode inner shell comprises a mounting piece; the mounting piece is fixedly mounted at the other end of the electrode inner shell.

Preferably, the outer side wall of the electrode inner shell is provided with a plurality of limiting holes; the inner side wall of the electrode shell is provided with a plurality of limit protrusions matched with the limit holes; the limiting protrusions and the limiting holes are the same in number and correspond to each other in position one by one.

Preferably, a poking piece is arranged on one outer side wall of the electrode inner shell; a concave area is arranged on one outer side wall of the electrode shell; the poking piece is close to the concave area.

Preferably, the inner bottom wall of the electrode shell is also provided with a plurality of limit posts; and the plurality of limit posts are propped against one end of the electrode inner shell.

The utility model also provides a hydrogel electrode headband, which comprises a plurality of hydrogel electrodes; the hydrogel electrode head band also comprises a first head band, a second head band and a signal acquisition module; one end of the first headband is fixed at one end of the signal acquisition module; one end of the second headband is fixed at the other end of the signal acquisition module; the other end of the first head band is detachably connected with the other end of the second head band, and a head space is formed by surrounding the first head band, the second head band and the signal acquisition module; the hydrogel electrodes are arranged on one side of the signal acquisition module, which faces the head space.

Preferably, the first headband comprises a first inner band, a first sideband, a first connector; one end of the first inner belt is fixed at one end of the signal acquisition module, and the other end of the first inner belt is movably connected with one end of the first sideband through the first connecting piece; the second headband comprises a second inner band, a second sideband and a second connecting piece; one end of the second inner belt is fixed at the other end of the signal acquisition module, and the other end of the second inner belt is movably connected with one end of the second sideband through the second connecting piece; the first sideband and the second sideband are detachably connected.

The beneficial effects are that:

according to the hydrogel electrode and the hydrogel electrode head band, when the electroencephalogram signals are collected, the hydrogel is directly contacted with the skin of a person to be collected, the hydrogel material can be contacted with the skin of the person to be collected in a nontoxic and soft manner with a certain viscosity, and the hydrogel can be electrically conductive without injecting conductive paste or saline after being contacted with the skin of the person to be collected, so that the operation is simple and convenient, and the problems that the electrode is in poor contact with the scalp and the electroencephalogram signal collection effect is affected in the background art are solved.

Drawings

FIG. 1 is a block diagram showing a hydrogel electrode according to a first embodiment;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a view showing a construction of the electrode inner case of FIG. 1;

FIG. 4 is a block diagram of the electrode housing of FIG. 1;

FIG. 5 is a block diagram of a hydrogel electrode headband in accordance with a second embodiment;

fig. 6 is a top view of fig. 5.

Reference numerals

10. A first inner belt; 11. a first sideband; 12. a first connector; 20. a signal acquisition module; 21. a jack; 30. a second inner belt; 31. a second sideband; 32. a mounting member; 33. a fixing member; 34. a hub; 40. an electrode; 41. an electrode inner case; 411. a receiving chamber; 412. a limiting hole; 413. a pulling piece; 414. positioning holes; 42. a hydrogel; 43. an electrode housing; 431. a recessed region; 432. a limit protrusion; 433. a limit column; 44. an electrode buckle; 441. a mounting piece; 45. a conductive sheet; 451. positioning columns; 50. a plug; 51. a conductive hole; 60. an electrode bus; 70. an electrode interface.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

The technical scheme of the utility model is described in detail in the following by specific embodiments.

Example 1

As shown in fig. 1 to 4, a hydrogel electrode of the present embodiment includes an electrode inner case 41, an electrode outer case 43, a hydrogel 42, and an electrode button 44; the electrode inner case 41 is detachably mounted inside the electrode outer case 43; the electrode inner case 41 is opened toward one end of the electrode outer case 43 and forms a receiving chamber 411 therein; hydrogel 42 is disposed within receiving cavity 411; the other end of the electrode inner case 41 is provided with an electrode button 44.

Preferably, the hydrogel electrode further comprises a conductive sheet 45; the conductive sheet 45 is disposed between the hydrogel 42 and the electrode button 44, and the hydrogel 42 and the electrode button 44 are connected by the conductive sheet 45.

Preferably, a positioning column 451 is arranged at one end of the conductive sheet 45 facing the electrode buckle 44; one end of the electrode button 44 facing the conducting strip 45 is provided with a connecting hole; the other end of the electrode inner shell 41 is provided with a positioning hole 414; the connecting hole is communicated with the positioning hole 414; the positioning column 451 is located in the receiving hole and the positioning hole 414.

Preferably, the other end of the conductive sheet 45 is fixedly connected to the hydrogel 42.

Preferably, the end of the electrode button 44 facing the electrode inner case 41 includes a mounting piece 441; the mounting piece 441 is fixedly mounted to the other end of the electrode inner case 41.

Preferably, the outer side wall of the electrode inner shell 41 is provided with a plurality of limiting holes 412; the inner side wall of the electrode shell 43 is provided with a plurality of limit protrusions 432 matched with the limit holes 412; the number of the limit protrusions 432 and the limit holes 412 are the same and the positions are in one-to-one correspondence.

Preferably, a dial 413 is disposed on an outer side wall of the electrode inner case 41; an outer sidewall of the electrode housing 43 is provided with a recess 431; the paddle 413 is adjacent to the recessed region 431.

Preferably, the inner bottom wall of the electrode housing 43 is further provided with a plurality of limiting posts 433; the limiting posts 433 are all abutted against one end of the electrode inner shell 41.

In particular, the hydrogels (hydrogels) of this example are a class of extremely hydrophilic three-dimensional network structured gels that swell rapidly in water and in this swollen state can hold a large volume of water without dissolution, a conventional material in the art.

Specifically, in the actual use process, the electrode housing 43 of the hydrogel electrode 40 of the present embodiment needs to be removed first, so that the hydrogel 42 inside the hydrogel electrode 40 is directly contacted with the skin of the wearer, the hydrogel material can be contacted with the skin of the wearer in a nontoxic, soft and certain adhesive manner, and the hydrogel 42 can be electrically conductive without injecting conductive paste or saline after being contacted with the skin of the wearer, so that the operation is simple and convenient.

Specifically, in the internal structure of the hydrogel electrode 40, the hydrogel 42 is poured into the electrode inner shell 41 to form a convex shape, is in contact with the forehead skin of a wearer, has good conductive performance, is self-adhesive, is not easy to shift when in contact with the skin, and is comfortable to wear. The electrode inner case 41 is provided with an electrode button 44. The electrode housing 43 is covered after the hydrogel electrode 40 is used, so that the hydrogel 42 is prevented from being lack of water, stained with dust and oxidized.

Specifically, the electrode outer case 43 of the present embodiment is folded with the electrode inner case 41, and functions to protect the hydrogel 42 and prevent water loss thereof.

Specifically, a concave area 431 is provided on an outer side wall of the electrode outer case 43 of the present embodiment, corresponding to the pulling piece 413 provided on an outer side wall of the electrode inner case 41, and is convenient to open from the side-tilted outer case after folding.

Example two

As shown in fig. 5 to 6, a hydrogel electrode headband of the present embodiment includes a signal acquisition module 20, a first headband, and a second headband; a hydrogel electrode headband of the present embodiment further includes a plurality of hydrogel electrodes 40 of the first embodiment; one end of the first headband is fixed to one end of the signal acquisition module 20; one end of the second headband is fixed to the other end of the signal acquisition module 20; the other end of the first head band is detachably connected with the other end of the second head band, and a head space is formed by surrounding the first head band, the second head band and the signal acquisition module 20; a plurality of hydrogel electrodes 40 are disposed on the side of the signal acquisition module 20 facing the head space.

The hydrogel electrode headband of this embodiment, cavity that accessible first bandeau and second bandeau formed wears patient's head, solves "electrode cap shape parcel whole head among the background art, and to the wearer of different head surrounding, the possible tight discomfort that arouses the wearer to use, or can arouse electrode and scalp bad contact because of the size mismatch, influence the problem of EEG signal acquisition effect", and set up a plurality of hydrogel electrodes 40 in one side of signal acquisition module, guarantee the EEG signal acquisition function of hydrogel electrode headband.

Preferably, the first headband includes a first inner band 10, a first edge band 11, a first connector 12; one end of the first inner belt 10 is fixed at one end of the signal acquisition module 20, and the other end of the first inner belt 10 is movably connected with one end of the first side belt 11 through a first connecting piece 12; the second headband includes a second inner band 30, a second sideband 31, a second connector; one end of the second inner belt 30 is fixed at the other end of the signal acquisition module 20, and the other end of the second inner belt 30 is movably connected with one end of the second sideband 31 through a second connecting piece; the first and second side bands 11, 31 are detachably connected.

Preferably, the hydrogel electrode head strip is provided with a plurality of insertion holes 21; the hydrogel electrode headband also includes an electrode bus 60, a plurality of plugs 50; the number of plugs 50 and the number of jacks 21 are the same, and one end of each plug 50 is installed in one jack 21 one by one; one end of the electrode bus 60 includes a plurality of electrode wires in the same number as the plugs 50, and one end of each electrode wire is mounted one-to-one to the other end of one plug 50.

Preferably, the hydrogel electrode headband also includes a hub 34; the side of the second sideband 31 facing away from the signal acquisition module 20 is provided with a mounting piece 32; the outer wall of the mounting member 32 is fixedly provided with a fixing member 33; the hub 34 is fixedly mounted to the outer wall of the mounting member 32 by a fixing member 33.

Preferably, the middle section of the electrode bus 60 is secured to the second sideband 31 by the hub 34; the hydrogel electrode headband also includes an electrode interface 70; the other end of the electrode bus 60 is mounted to an electrode interface 70.

Preferably, one end of each plug 50 is provided with a conductive hole 51; the electrode buttons 44 of each hydrogel electrode 40 are located one-to-one in one of the conductive pores 51.

Preferably, the side of the first sideband 11 facing away from the signal acquisition module 20 is provided as a fiber surface of a magic tape; the second side band 31 is arranged as a burr surface of the magic tape towards one side of the signal acquisition module 20; the second side band 31 is detachably connected with the first side band 11 through the fiber surface stuck on the burr surface; the second sideband 31 is now located outside the first sideband 11.

Specifically, the hydrogel electrode 40 of the present embodiment is provided in three, and the insertion hole 21, the plug 50, and the conductive hole 51 are provided in three correspondingly.

Specifically, first bandeau and second bandeau of this embodiment are adjustable, and two bandeau are the silica gel material, and soft have elasticity, can guarantee the wearing comfort of wearer.

Specifically, the electrode button 44 of the present embodiment is detachably inserted into the conductive hole 51, so that the hydrogel electrode 40 can be replaced with a new one.

In particular, the hydrogel electrode headband is suitable for electroencephalogram signal acquisition in multiple application situations, such as electroencephalogram biofeedback. In the internal structure of the hydrogel electrode 40, the hydrogel 42 is poured into the electrode inner shell 41 to form a bulge shape, is contacted with the forehead skin of a wearer, has good electric conduction performance, is self-adhesive, is not easy to shift when contacted with the skin, and is comfortable to wear. The electrode inner case 41 is provided with electrode buttons 44, and is electrically connected to the electrode bus 60 after being inserted into conductive holes of the plug 50 embedded in the headband. The electrode housing 43 is covered after the hydrogel electrode 40 is used, so that the hydrogel 42 is prevented from being lack of water, stained with dust and oxidized.

In the actual use process, the mounting position of the hydrogel electrode 40 is set at one side of the signal acquisition module 20 according to the 10-20 international electroencephalogram recording system established in 1958 by the international society of electroencephalogram, and is used for acquiring signals of the recording electrode Fp1, the ground electrode Fpz and the reference electrode Fp2 respectively.

Further, when wearing the hydrogel electrode headband of this embodiment, the wearer needs to wipe the forehead skin with cleaning cloth towel or normal saline, so as to reduce the interference of skin grease on the contact of the hydrogel electrode 40, and wear the hydrogel electrode headband after aligning the hydrogel electrode 40 with the corresponding position of the forehead, and attach the magic tape after the brain, so that the hydrogel electrode headband is ensured not to be too tight, resulting in discomfort, and not to loosen, so as to influence the acquisition quality of the electroencephalogram signals.

The hydrogel electrode headband is simple and stable to operate and high in comfort during use, is particularly suitable for children with different head circumferences, and has durability and practicability due to the fact that the hydrogel electrode 40 is replaceable.

Specifically, the hydrogel electrode 40 of the present embodiment is electrically connected to the electrode bus 60, and functions to transmit an electroencephalogram signal.

Specifically, the electrode outer case 43 of the present embodiment is folded with the electrode inner case 41, and functions to protect the hydrogel 42 and prevent water loss thereof.

Specifically, the electrode interface 70 of the present embodiment may be inserted into an electroencephalogram biofeedback instrument to realize electroencephalogram signal acquisition.

As another implementation of the hydrogel electrode headband of this embodiment, the second sideband 31 is changed to be a fiber surface of a magic tape on a side facing away from the signal acquisition module 20, and the first sideband 11 is changed to be a burr surface of a magic tape on a side facing toward the signal acquisition module 20.

Preferably, in the hydrogel electrode headband of the present embodiment, a through hole is further formed in the mounting member 32; while the first side band 11 is connected with the second side band 31 through the tattooing surface pasting fiber surface, the other end of the first side band 11 also passes through the through hole; the first sideband 11 is now located outside the second sideband 31.

The embodiments of a hydrogel electrode and a headband for a hydrogel electrode provided by the present utility model are described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that the present utility model may be modified and adapted without departing from the principles of the present utility model, and that such modifications and adaptations are intended to be within the scope of the appended claims.

Claims (10)

1. A hydrogel electrode, which is characterized by comprising an electrode inner shell (41), an electrode outer shell (43), hydrogel (42) and an electrode buckle (44); the electrode inner case (41) is detachably mounted inside the electrode outer case (43); the electrode inner case (41) is open toward one end of the electrode outer case (43) and forms a receiving chamber (411) inside; the hydrogel (42) is arranged in the accommodating cavity (411); the other end of the electrode inner shell (41) is provided with the electrode buckle (44).

2. The hydrogel electrode according to claim 1, further comprising a conductive sheet (45); the conducting strip (45) is arranged between the hydrogel (42) and the electrode buckle (44), the hydrogel (42) contacts the conducting strip (45), and the conducting strip (45) is connected with the electrode buckle (44).

3. The hydrogel electrode according to claim 2, characterized in that one end of the conductive sheet (45) facing the electrode button (44) is provided with a positioning post (451); one end of the electrode buckle (44) facing the conducting strip (45) is provided with a connecting hole; the other end of the electrode inner shell (41) is provided with a positioning hole (414); the connecting hole is communicated with the positioning hole (414); the positioning column (451) is located in the receiving hole and the positioning hole (414).

4. A hydrogel electrode according to claim 3, characterized in that the other end of the conductive sheet (45) is fixedly connected to the hydrogel (42).

5. The hydrogel electrode according to claim 1, wherein an end of the electrode button (44) facing the electrode inner housing (41) comprises a mounting tab (441); the mounting piece (441) is fixedly mounted at the other end of the electrode inner case (41).

6. The hydrogel electrode according to claim 1, characterized in that the outer side wall of the electrode inner housing (41) is provided with a number of limiting holes (412); the inner side wall of the electrode shell (43) is provided with a plurality of limit protrusions (432) matched with the limit holes (412); the limiting protrusions (432) and the limiting holes (412) are the same in number and in one-to-one correspondence.

7. The hydrogel electrode according to claim 1, characterized in that an outer side wall of the electrode inner housing (41) is provided with a paddle (413); an outer side wall of the electrode shell (43) is provided with a concave area (431); the paddle (413) is adjacent to the recessed region (431).

8. The hydrogel electrode according to claim 1, characterized in that the inner bottom wall of the electrode housing (43) is further provided with a number of stopper posts (433); the limiting columns (433) are propped against one end of the electrode inner shell (41).

9. A hydrogel electrode headband comprising a plurality of hydrogel electrodes according to any one of claims 1-8; the hydrogel electrode head band also comprises a first head band, a second head band and a signal acquisition module (20); one end of the first headband is fixed at one end of the signal acquisition module (20); one end of the second headband is fixed to the other end of the signal acquisition module (20); the other end of the first head band is detachably connected with the other end of the second head band, and a head space is formed by surrounding the first head band, the second head band and the signal acquisition module (20); a plurality of hydrogel electrodes (40) are arranged on the side of the signal acquisition module (20) facing the head space.

10. The hydrogel electrode headgear of claim 9, wherein the first headgear comprises a first inner strap (10), a first edge strap (11), a first connector (12); one end of the first inner belt (10) is fixed at one end of the signal acquisition module (20), and the other end of the first inner belt (10) is movably connected with one end of the first side belt (11) through the first connecting piece (12); the second headband includes a second inner band (30), a second sideband (31), a second connector; one end of the second inner belt (30) is fixed at the other end of the signal acquisition module (20), and the other end of the second inner belt (30) is movably connected with one end of the second sideband (31) through the second connecting piece; the first sideband (11) and the second sideband (31) are detachably connected.