CN113855033A

CN113855033A - Saline electrode electroencephalogram cap easy to assemble and disassemble and capable of flexibly positioning and supplementing liquid

Info

Publication number: CN113855033A
Application number: CN202111367331.5A
Authority: CN
Inventors: 陈军; 于庆鹏; 吴天成
Original assignee: Xinyinao Shanghai Information Technology Co ltd
Current assignee: Xinyinao Shanghai Information Technology Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2021-12-31

Abstract

The invention relates to a novel saline electrode electroencephalogram cap which comprises a silica gel cap body and a plurality of electrodes, wherein each electrode can be freely buckled and connected with electrode carriers distributed on the electroencephalogram cap according to a 10-20 system, the electrodes are packaged by a cylindrical shell, a fixing bolt buckle plate is arranged on the outer side of the shell, the electrodes are fixed in the center of the inner side of the shell and are connected out from the top of the shell through a lead, no wall is arranged at the bottom of the shell, a replaceable saline sponge is arranged at the bottom of each electrode, and the sponge expands when meeting water and discharges partial liquid when being extruded. The top of the shell is provided with a circle of depressions, the bottoms of the depressions are provided with evenly distributed pores, and the pores reach the sponge core and are used for supplementing a saline medium so as to prolong the recording time of the saline electrode. The electrodes are stored in a saline electrode cartridge when not in use. This design uses and to replace sponge and salt solution electrode box and carry out the electrode storage, can realize high-efficient brain and each electrode of leading when needs use, has avoided the adjustment process of electrode one by one, has made things convenient for measurement personnel's equipment maintenance, and it is long when also having shortened the measuring of testee, has more guaranteed the low impedance.

Description

Saline electrode electroencephalogram cap easy to assemble and disassemble and capable of flexibly positioning and supplementing liquid

Technical Field

The invention belongs to the technical field of brain wave detection, and particularly relates to a saline water electrode electroencephalogram cap which is easy to assemble and disassemble, can be flexibly positioned and can be used for supplementing liquid.

Background

Electroencephalography (EEG) is a method of detecting and recording waveforms of electrical brain signals by attaching a number of electrodes to the scalp according to a rule. The electroencephalogram is important information for researching and diagnosing mental diseases at present, non-invasive acquisition can be used for electroencephalogram acquisition at present, and acquisition equipment is portable.

The brain electricity cap is a main tool for collecting the human brain bioelectricity signals. In order to ensure the quality of the electroencephalogram signals, the electroencephalogram electrodes need to be contacted with the scalp as much as possible, and the impedance between the electroencephalogram equipment electrodes and the scalp is reduced, so that better signals can be obtained. In order to reduce the impedance, the connection is usually assisted by saline or conductive paste. At present, electroencephalogram collection mainly comprises three types, namely a conductive paste wet electrode, a physiological saline electrode and a dry electrode.

The wet electrode of conductive paste is used for wetting hair and enabling the electrode and the scalp to form electric leads by manually injected conductive paste, although the effect is excellent, the time and labor are wasted when the conductive paste is manually injected one by one in each use, and the residual conductive paste after the collection of electroencephalogram brings inconvenience for cleaning and maintenance.

The dry electrode is very convenient, avoids the injection and the residue of the conductive paste, but has a heavy structure, and the direct contact between the electrode bodies and the scalp needs to be manually adjusted one by one to reduce the impedance.

Compared with other modes, the physiological saline is used for connecting the electrodes without adjusting the electrode resistance one by one, so that the time required by an experiment can be shortened, and the electroencephalogram acquisition efficiency is greatly improved. The whole electroencephalogram cap of the traditional saline-water electrode is required to be soaked in physiological saline, and although the impedance between the electrode and the scalp is low, the wet percolation of the electrode and the scalp can cause discomfort to a subject, bring influence to electroencephalogram signals and cause damage to the electroencephalogram signals more easily due to short circuit. In addition, the saline dries out gradually, resulting in a gradual increase in impedance during the acquisition.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to design the saline-water electrode electroencephalogram cap which is simple in structure, short in lead setting time, low in impedance between an electrode and the scalp, capable of avoiding overall moisture, long in service life and convenient for a user to operate and maintain.

The technical scheme of the invention is as follows:

a plurality of electrode carriers are distributed on the silica gel cap body as required, and the electrode carriers are all distributed according to an international 10-20 electroencephalogram electrode system.

Further, the upper side of the electrode carrier is provided with a convex arc-shaped fixing bolt for freely fixing the brine electrode body.

Furthermore, the saline electrode body is stored in the saline electrode box, physiological saline in the box is absorbed by the sponge at the bottom, the saline electrode body can be taken out one by one when in use, and the fixing bolts at the side surfaces of the electrodes are buckled and rotated into the fixing bolts to be fixed on the silica gel cap body.

This storage and fixing system had both accomplished that normal saline only uses when needing, only appeared in the most critical region, had avoided whole humidity, had made things convenient for the user to operate again, only need take out the required electrode in the box and screw in the fixed knot can begin to gather.

Further, the length of the electrode body under the pinch plate is different for different electrode positions.

Further, the electrode body is connected to a data acquisition device through a lead wire outside the top of the outer shell, and the bottom of the electrode body is connected with the sponge without a wall.

When in use, the sponge filled with normal saline is squeezed on the scalp, so that the scalp and the electrode are connected by the normal saline in an auxiliary way, and low-impedance signal acquisition is realized.

Furthermore, the selected sponge is a replaceable sponge, and can be directly taken down after being worn to be discarded and replaced, so that the equipment is convenient to maintain and repair after being used.

Furthermore, the top of the electrode body is provided with a circle of recess, the bottom of the recess is provided with a plurality of small holes, the small holes are directly connected with the bottom sponge core, and a user can inject and supplement physiological saline by using the small holes according to the use condition, so that the use time limit is prolonged.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the accompanying drawings.

FIG. 1 is a schematic diagram of an electrode structure according to the present invention. The length of the shell under the fixing bolt buckle plates on the two sides can be adjusted according to the position of the electroencephalogram cap.

FIG. 1 shows the following symbols: 1. the whole saline electrode; 2. connecting a lead externally; 3. fixing the bolt buckle plate; 4. an electrode core; 5. a sponge core;

FIG. 2 is a schematic view of an electrode carrier structure on the cap body of the present invention.

FIG. 2 identifies: 6. an electrode carrier entirety; 7. an arc-shaped fixing bolt; 8. an annular groove.

FIG. 3 is a schematic view of a brine electrode storage cartridge of the present invention.

Detailed Description

Referring to fig. 1 to 3, the complete equipment of the saline electrode electroencephalogram cap provided by the embodiment of the invention comprises: silica gel brain electricity cap main part, salt solution electrode and salt solution electrode storage box.

Fig. 1 illustrates the internal construction of the saline electrode and the appearance pattern after installation of the sponge core.

Fig. 2 illustrates the appearance pattern of the electrode carrier embedded on the silica gel cap.

Fig. 3 illustrates a case where electrode bodies of different possible styles and partial heights of the electrode cartridge are stored therein.

Wherein, a plurality of electrode carriers 6 have been inlayed in the brain electricity cap main part, electrode carrier 6 realizes fixing through inlaying silica gel cap body round hole edge into annular groove 8.

The electrode carrier can be installed according to the position of an international standard system, and can also be freely installed at a proper position according to the requirement of a user. The maximum number of the electrode carriers which can be arranged is determined by the coordination of the size of the electrode carriers and the surface area of the electroencephalogram cap. The number of electrode carriers can be freely set while ensuring the accuracy of data acquisition.

The upper part of the electrode carrier 6 is provided with a convex arc-shaped fixing bolt 7, and a user can fix the fixing bolt buckle plate 3 on the brine electrode 1 by screwing the fixing bolt buckle plate into the fixing bolt 7. In actual use, the silica gel electroencephalogram cap is worn on the head to be tested, the electrode carriers 7 with different heights are matched with the points to be collected, and then the saline electrode 1 is screwed in.

The saline electrode 1 consists of a shell, an electrode core 4, a lead 2 and a water-absorbing expansion sponge 5.

The shell is of a semi-surrounding type with a hollow bottom.

The side of shell is equipped with two gim peg buckle 3 and is used for fixing, the bottom stopper of shell has the expansion sponge 5 that absorbs water, and the top is equipped with the round and caves in, and there are a plurality of apertures sunken bottom. In practical use, the sponge 5 is placed in the saline electrode box along with the saline electrode 1 at ordinary times, and the sponge 5 can absorb the physiological saline in the box to expand; when the brain-electrical-brain-cap-wearing device needs to be used, the saline electrode 1 is taken out and screwed into the electrode carrier 6 on the brain-electrical-brain cap worn, the bottom of the sponge 5 is connected with the scalp, and partial physiological saline is discharged by extrusion to form a low-impedance lead. Wherein, the electrode core 4 is led out from the top of the brine electrode shell through the lead 2 and is connected with an external amplifier device.

In the collection process, as with most of the existing saline electrode electroencephalogram caps, the physiological saline can be dried gradually, so that the impedance is increased gradually, and the long-time collection task is not facilitated; in this embodiment, the electrode body top is equipped with the round and caves in, and sunken bottom is equipped with the aperture passageway that reaches bottom sponge core, and the user of using can use like syringe etc. to carry out the fluid infusion to this aperture, the extension acquisition time.

The silica gel cap body is not limited to the silica gel material, and can be a main body which is made of any elastic material and is similar to the structure of the head of a user, and the silica gel cap body is not limited in the embodiment.

The arc-shaped fixing bolt system of the present invention is only a specific implementation way of this embodiment, but the protection scope of the present invention is not limited to this, and other embodiments obtained by modifying/replacing the same effects without creative efforts for those skilled in the art are included.

Claims

1. The utility model provides an easily install and remove brine electrode brain electricity cap that can fix a position in a flexible way and fluid infusion, includes the silica gel cap body and a plurality of electrode carrier, a plurality of brine electrodes and brine electrode box, its characterized in that: the electrode carriers are uniformly distributed on the cap body, the upper sides of the electrode carriers are provided with convex arc-shaped fixing bolts, and the saline electrodes can be stored in the electrode box.

2. The electrode carrier of claim 1, wherein: the outer ring side of the carrier is provided with an annular groove which can be used for fixing the carrier at a specific position of the silica gel cap body.

3. The brine electrode cartridge of claim 1, wherein: the top of the electrode box is provided with a plurality of round holes, the saline electrode can be placed in the round holes, the inside of the electrode box is stored with physiological saline, and the sponge at the bottom of the electrode can be fully stored in the electrode box.

4. The brine electrode of claim 1, wherein: and fixing bolt buckle plates for fixing the electrode carrier are arranged on two sides of the outer shell of the electrode column.

5. The brine electrode of claim 1, wherein: the bottom side of the electrode column shell is hollow and is connected with the replaceable sponge.

6. The brine electrode of claim 1, wherein: the center of the electrode column is fixed with an electrode and is externally connected by a lead, and the other end of the lead is used for being connected with a signal amplifier.

7. The brine electrode of claim 1, wherein: the top of the electrode column shell is provided with a circle of recess, the bottom of the recess is provided with uniformly distributed pores, and the pores are directly connected to the bottom sponge core.

8. The sponge according to claim 3, wherein: the sponge is water-absorbing expansion sponge, and the absorbed liquid is released when the sponge is squeezed in the presence of force, so that the sponge can be detached and replaced from the bottom of the electrode column body.