CN105411584B - It is a kind of to concentrate for wet brain electricity cap and flexible micro- ooze electrode structure - Google Patents
It is a kind of to concentrate for wet brain electricity cap and flexible micro- ooze electrode structure Download PDFInfo
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- CN105411584B CN105411584B CN201511020694.6A CN201511020694A CN105411584B CN 105411584 B CN105411584 B CN 105411584B CN 201511020694 A CN201511020694 A CN 201511020694A CN 105411584 B CN105411584 B CN 105411584B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/369—Electroencephalography [EEG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/12—Manufacturing methods specially adapted for producing sensors for in-vivo measurements
- A61B2562/125—Manufacturing methods specially adapted for producing sensors for in-vivo measurements characterised by the manufacture of electrodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/22—Arrangements of medical sensors with cables or leads; Connectors or couplings specifically adapted for medical sensors
- A61B2562/221—Arrangements of sensors with cables or leads, e.g. cable harnesses
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
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- Psychiatry (AREA)
- Psychology (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Electrotherapy Devices (AREA)
Abstract
Micro- electrode is oozed the invention discloses a kind of flexible, it includes flexible hose (21), micro- oozes contact head (22) and conductive lead wire (23), flexible hose (21) includes front-end and back-end, front end is connected with micro- contact head (22) that oozes, rear end is connected with storing the liquid capsule (1) of conduction liquid, conducting liquid is full of in flexible hose (21), conductive lead wire (23) is immersed in the conducting solution.Invention additionally discloses a kind of brain electricity cap using above-mentioned electrode, the flexible micro- electrode and brain electricity cap of oozing formed has good impedance operator and comfort level, solves conduction liquid largely sense of discomfort caused by residual, and largely save the Preparatory work of experiment time.
Description
Technical field
The present invention relates to the correlative technology field such as micro Process manufacturing technology and electricity physiological signal collection, and in particular to Yi Zhongji
In the concentration of metal and flexible material for wet electrode structure and the brain electricity cap formed.
Background technology
Scalp eeg collection system is commonly referred to as brain electricity cap.Brain electricity cap be one kind be assembled with electrode for encephalograms and can by brain electricity
Electrode consolidates the device for being attached to head and immediate vicinity.Under normal conditions, after brain electricity cap is worn, in order to make electrode and head
The electrical contact well stablized is formed between skin, it is necessary to by hole reserved on brain electricity cap and electrode, is noted one by one to base part
Enter to include specific ion and conductive characteristic while the conductive paste with proper viscosity.Conductive paste overflows around in order to prevent, and one
As electrode be designed as tubbiness or bowl-shape, the electrode cream of injection is filled between scalp and electrode, is played wet skin and is disappeared
Electric isolution, a relatively low electrode/organizational interface is provided for brain wave acquisition caused by hair removal.Up to now, this electrode knot
It is always a kind of optimal eeg signal acquisition device of signal quality that structure and cooperation conductive paste, which place strategy,.
Although taking advantage in terms of electrical signal collection quality, the shortcomings that this electrode, is primarily present three aspects：When
Using time length, it is necessary to which electrode injection conductive paste, a people are difficult the independent wearing for completing electrode one by one；Second be by
After examination person has used this electrode, hair and scalp sites have serious conductive glue residua, it is necessary to which washing hair to remove, to use
Cause big inconvenience in family.3rd is not to be suitable for long-term chronic electricity physiological signal monitoring.Elapsed with the time, conduction liquid
It can gradually volatilize, evaporate, increase skin electrode interface impedance.Applied with brain electricity in terms of health supervision and brain-computer interface
It is unfolded and deeply, the deficiency of the mode of this electrode+conductive paste increasingly highlights.In these application scenarios, in order to which self is strong
Health is guarded or amusement, and user is difficult to tolerate with this operator scheme that other people place, wash hair after.Some mechanisms research and develop for this
The dry electrode that conductive paste is not required is gone out, as M.A.Lopez-Gordo et al. is delivered for 2014 on SENSORS periodicals《Dry
EEG Electrodes》In one text, main dry electrode company and product in recent years are reviewed and summarized, these dry electrodes
Device can not all be compared no matter in terms of usage comfort or in terms of signal quality with wet electrode.In order to eliminate hair
Barrier, dry electrode device mostly use pectinate texture, hair are passed through using broach, while having lacked conductive paste buffering, broach
Less cross section directly contacts scalp and itself has certain discomfort, while in order to make contact more stable, often also needs to
Apply the pressure of bigger on the dry electrode of pectination.In terms of impedance and signal stabilization, due to lacking the buffering of conductive paste, dry electrode
Device is often very sensitive to motion artifacts, this is very unfavorable to the system required with wearing.Ground at the same time in long-term
Study carefully middle discovery, the dry electrode overwhelming majority that metal electrode or other polymeric materials are formed is really up to the mark there are hardness, wears uncomfortable
Phenomena such as, when being especially for use in human brain experiment, a degree of feeling of pain is brought to subject.
The content of the invention
(1) technical problems to be solved
For existing dry, wet electrode at comfort level, Preparatory work of experiment overlong time, long term monitoring and skin electrode interface
The problems such as impedance is unstable.It is a primary object of the present invention to provide a kind of brain electricity cap being made of flexible material as main body,
Realize the quick comfortable brain wave acquisition worn i.e..
(2) technical solution
According to an aspect of the invention, there is provided it is a kind of flexible it is micro- ooze electrode, it includes flexible hose, micro- oozes contact head
And conductive lead wire, flexible hose include front-end and back-end, front end is connected with micro- contact head that oozes, rear end and the liquid capsule of storage conduction liquid
Connect, be full of conducting liquid in flexible hose, conductive lead wire is immersed in the conducting solution.
According to another aspect of the present invention, there is provided a kind of concentrate supplies wet brain electricity cap, it includes liquid capsule and flexibility micro- is oozed
Electrode, liquid capsule are installed on brain electricity cap, are the containers that storage makes flexible micro- conduction liquid for oozing electrode wetting on brain electricity cap, flexible micro-
Ooze electrode include flexible hose, it is micro- ooze contact head and conductive lead wire, flexible hose includes front-end and back-end, and front end is contacted with micro- ooze
Head is connected, and rear end is connected with storing the liquid capsule of conduction liquid, conducting liquid is full of in flexible hose, conductive lead wire is immersed in the conduction
In solution.
(3) beneficial effect
It can be seen from the above technical proposal that the present invention is using being main body by a kind of flexible material, in combination with leading
What electric thing was formed possesses the brain electricity cap system of the quantitative conduction liquid of storage.The flexible micro- electrode and brain electricity cap of oozing formed has well
Impedance operator and comfort level, will not make one to produce the feeling of pain of electrode compressing and conduction liquid largely sense of discomfort caused by residual.
With the benign supply of conduction liquid, the stability of impedance between skin electrode is maintained, drastically increases bio-electro-physiologic
The quality of signal, beneficial to being monitored for a long time to brain signal.Show in substantial amounts of experiment, the concentration that the present invention is formed is for wet
Brain electricity cap and it is flexible it is micro- ooze electrode structure test and work well, the collection effect similar with tradition brain electricity cap can be reached, it was demonstrated that
The feasibility of the present invention.
Brief description of the drawings
Fig. 1 is that the present invention is concentrated for wet brain electricity cap system schematic；
Fig. 2 is that the flexible of the present invention micro- oozes electrode structure schematic diagram.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
The present invention proposes a kind of micro- concentration oozed electrode and use the electrode of flexibility and supplies wet brain electricity cap.According to this hair
Bright basic principle, flexible micro- electrode that oozes are made of flexible hose, flexible porous material and conductive lead wire.It is full of in flexible hose
Conducting liquid, its front end are flexible porous material (such as fibers or flexible ceramic), and rear end is connected to the liquid capsule of perfusion conduction liquid, leads
The lead riser of electrical lead is prepared using silver/silver chlorate, and rear end is connected with connecting line, and wherein silver/silver chlorate part is immersed in hose
Liquid in, with hole neighbour；Connecting line is pierced by through hose wall, outside hose.Conduction liquid can be by hole, with capillary
Effect penetrates into front end porous material lower surface, when surface tension of the conduction liquid in porous material and osmotic pressure reach balance
When, conduction liquid reaches saturation on surface, and there is no conduction liquid exudation at this time；When the surface of porous material is because the reason such as evaporation disappears
Consumption, balance are broken, and the solution in hose may proceed to add to lower surface, holding electrode and its scalp contacted be in wetting and
Low resistive state.This electrode being assemblied on same brain electricity cap is connected to a liquid capsule by hose.Maximum spy of the invention
Put and be to keep impedance stabilization constant for a long time, usage comfort is high, disposable to irrigate all electrodes at the same time, considerably reduces
Electrode time, that is, wear and use.Due to by the way of micro- ooze, avoiding adhesion of the conductive paste on hair.Such electricity
Pole and not only have the advantages that wet electrode signal-to-noise ratio is good, but overcome wet electrode place time is long, wear after need to remove hair
On the inconvenience such as conductive paste.
The solution of the present invention is further described referring to Fig. 1 and Fig. 2.Fig. 1 is that the present invention is concentrated for wet brain electricity
Cap system schematic；Fig. 2 is that the flexible of the present invention micro- oozes electrode structure schematic diagram.
Each reference numeral is meant that：1:Liquid capsule；2：Flexibility is micro- to ooze electrode；21：Flexible hose 22：It is micro- to ooze contact head；23：
Conductive lead wire；231：Lead riser；232：Connecting line.
As shown in Figure 1, concentrating includes liquid capsule 1 for wet brain electricity cap and flexible micro- oozes 2 two parts of electrode.
As shown in Fig. 2, flexible micro- electrode 2 that oozes includes flexible hose 21, micro- oozes contact head 22, conductive lead wire 23.Wherein
Conductive lead wire 23 includes lead riser 231 and connecting line 232 two again.
Flexible micro- electrode 2 that oozes is prepared by following steps：Step 1：By the PDMS host agents of liquid and curing agent with 10:1 ratio
Example mixing, injects in the mould of flexible hose, makes the bubble in mixed liquor floating to surface using the mode vacuumized and rupture,
It is put into 120 degree of oven and bakes about hour, make its curing molding, forms flexible hose 21.Flexible hose 21 includes front end
, can not also be the same and rear end, front-end and back-end can be the same, it is preferable that the front end of flexible hose 21 is wider than rear end, overall
In ampuliform.Step 2：PEDOT materials are fabricated to electrostatic spinning structure using high pressure, form it into spongiform structure, it is internal
Cellular gap structure is formed, formation is micro- to ooze contact head 22.Step 3：Inner wall in 21 one end of flexible hose places silver/silver chlorate
The lead riser 231 of material composition, lead riser 231 are connected with connecting line 232, and connecting line 232 wears out flexible hose inner wall, are led to outer
Portion, easy to be connected with extraneous collecting device.Step 4：By flexible hose 21 and micro- contact head 22 is oozed using the mode being heating and curing
It is combined together, makes lead riser 231 with micro- contact head 22 that oozes close proximity to the unification for forming a closing is overall.Step 5：Will
1 one end of liquid capsule that epoxy resin is formed carries out heat cure with 21 other end of flexible hose that PDMS is formed, and is formed and is tightly connected.
It is then according to world 10-20 electroencephalogram lead systems to concentrate for wet brain electricity cap, making will be referred in above step
Electrode, be placed in the correspondence position of silk fabrics brain electricity cap one by one, and fix, formed to concentrate and supply wet brain electricity cap.
Liquid capsule 1 be storage make brain electricity cap top electrode soak conduction liquid container, by with flexible hose 21 and each electrode
Connection, liquid capsule 1 can be placed in the position on brain electricity cap head top, and wetting electrolyte is provided to a electrode by gravitional force；
Other positions can be placed in, by the power drive such as compressed air or Micropump conduction liquid to electrode movement.
In use, micro- to ooze contact head 22 and head contact, conduction liquid enters through flexible hose 21, soaks micro- ooze and connects
Contact and the hair skin contacted.The flexible hose supplement conduction liquid of the timely forward end of liquid capsule energy, maintains skin electrode interface
Moistening, easy to long term monitoring.And micro- contact head that oozes of flexible hose front end can effectively avoid conduction liquid rapid osmotic from causing
Each collection path short circuit or conduction liquid the problems such as largely remaining.Flexible micro- electrode structure that oozes designed at the same time is because of its elasticity
Characteristic, by increasing capacitance it is possible to increase the comfort level of real user, effectively prevent the senses of discomfort such as pain adjoint in current electrode use.
Particular embodiments described above, has carried out the purpose of the present invention, technical solution and beneficial effect further in detail
Describe in detail bright, it should be understood that the foregoing is merely the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done, should be included in the protection of the present invention
Within the scope of.
Claims (9)
1. it is a kind of flexible it is micro- ooze electrode, it includes flexible hose (21), micro- oozes contact head (22) and conductive lead wire (23), flexibility
Hose (21) includes front-end and back-end, and front end is connected with micro- contact head (22) that oozes, and rear end and the liquid capsule (1) of storage conduction liquid connect
Connect, conducting liquid is full of in flexible hose (21), conductive lead wire (23) is immersed in the conducting solution.
2. flexibility according to claim 1 is micro- to ooze electrode, it is characterised in that flexible hose (21) by polymer prepare and
Into.
3. flexibility according to claim 2 is micro- to ooze electrode, it is characterised in that micro- contact head (22) that oozes is by flexible porous material
It is prepared, micro- to ooze contact head (22) and head contact, conduction liquid enters through flexible hose (21), and wetting is micro- to ooze contact head (22)
And the hair skin contacted.
4. flexibility according to claim 3 is micro- to ooze electrode, it is characterised in that conductive lead wire (23) is by being in flexible hose
(21) lead riser (231) in and connecting line (232) two parts outside hose are formed, and wherein lead riser (231) is by electrification
Learn electrode material to prepare, lead riser (231) is immersed in hose, is close to or the micro- contact head (22) that oozes of neighbour is placed, connecting line
(232) wear out hose wall to guide to outside hose, be connected with brain wave acquisition equipment, formed through the part of flexible hose (21) good
Sealing, manages the electrical connection of the stable low-resistance of formation between inside and outside two parts.
5. it is a kind of concentrate supply wet brain electricity cap, it include liquid capsule (1) and flexibility it is micro- ooze electrode (2), liquid capsule (1) is installed on brain electricity cap
On, it is the container that storage makes flexible micro- conduction liquid for oozing electrode (2) wetting on brain electricity cap, flexible micro- electrode that oozes includes flexible hose
(21), micro- to ooze contact head (22) and conductive lead wire (23), flexible hose (21) includes front-end and back-end, and contact head is oozed in front end with micro-
(22) it is connected, rear end is connected with storing the liquid capsule (1) of conduction liquid, and conducting liquid, conductive lead wire are full of in flexible hose (21)
(23) it is immersed in the conducting solution.
6. according to claim 5 concentrate supplies wet brain electricity cap, it is characterised in that flexible hose (21) is prepared by polymer
Form.
7. according to claim 6 concentrate supplies wet brain electricity cap, it is characterised in that micro- contact head (22) that oozes is by flexible hole
Material is prepared, micro- to ooze contact head (22) and head contact, and conduction liquid enters through flexible hose (21), and wetting is micro- to ooze contact head
(22) and the hair skin that contacts.
8. according to claim 7 concentrate supplies wet brain electricity cap, it is characterised in that conductive lead wire (23) is flexible soft by being in
Manage the lead riser (231) in (21) and connecting line (232) two parts outside hose are formed, wherein lead riser (231) is by electricity
Prepared by chemical electrode material, lead riser (231) is immersed in hose, is close to or the micro- contact head (22) that oozes of neighbour is placed, connecting line
(232) wear out hose wall to guide to outside hose, be connected with brain wave acquisition equipment, formed through the part of flexible hose (21) good
Sealing, manages the electrical connection of the stable low-resistance of formation between inside and outside two parts.
9. brain electricity cap according to claim 5, it is characterised in that liquid capsule (1) is placed in the position on brain electricity cap head top, passes through
Gravitional force provides wetting electrolyte to each electrode, or is placed in other positions, passes through the power such as compressed air or Micropump
Conduction liquid is driven to electrode movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020694.6A CN105411584B (en) | 2015-12-30 | 2015-12-30 | It is a kind of to concentrate for wet brain electricity cap and flexible micro- ooze electrode structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020694.6A CN105411584B (en) | 2015-12-30 | 2015-12-30 | It is a kind of to concentrate for wet brain electricity cap and flexible micro- ooze electrode structure |
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| Publication Number | Publication Date |
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| CN105411584A CN105411584A (en) | 2016-03-23 |
| CN105411584B true CN105411584B (en) | 2018-04-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072450B (en) * | 2018-02-28 | 2022-05-20 | 北京布润科技有限责任公司 | Bioelectricity collection electrode and electroencephalogram collection cap |
| CN108742604A (en) * | 2018-06-19 | 2018-11-06 | 苏州修普诺斯医疗器械有限公司 | Wear-type brain wave acquisition terminal and brain wave acquisition method |
| CN109077724B (en) * | 2018-07-26 | 2021-12-07 | 北京机械设备研究所 | Conductive medium conveying system and method for electroencephalogram acquisition |
| CN209574689U (en) * | 2019-01-15 | 2019-11-05 | 浙江强脑科技有限公司 | Hydrogel reservoirs electrode for encephalograms |
| CN111281381A (en) * | 2020-03-13 | 2020-06-16 | 江苏集萃脑机融合智能技术研究所有限公司 | Electrode and equipment for keeping long-term wetting of contact part |
| CN113349804A (en) * | 2021-06-28 | 2021-09-07 | 上海大学 | Flexible extensible quick automatic conductive paste injection device |
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| US4709702A (en) * | 1985-04-25 | 1987-12-01 | Westinghouse Electric Corp. | Electroencephalographic cap |
| US5404875A (en) * | 1993-09-17 | 1995-04-11 | Sam Technology, Inc. | Electrode electrolyte application device |
| US20020177767A1 (en) * | 2000-05-16 | 2002-11-28 | Steve Burton | Sensor for biopotential measurements |
| US20020173710A1 (en) * | 2001-05-18 | 2002-11-21 | Licata Mark J. | Sensor for biopotential measurements |
| CN201139565Y (en) * | 2007-12-14 | 2008-10-29 | 彭小虎 | Self-charging-up EEG electrode |
| WO2012036639A1 (en) * | 2010-09-16 | 2012-03-22 | National University Of Singapore | Eeg electrodes with gated electrolyte storage chamber and an adjustable eeg headset assembly |
| CN102871657B (en) * | 2012-10-16 | 2014-04-02 | 中国人民解放军国防科学技术大学 | System and method for collecting electroencephalogram signal on basis of impedance self-adaption |
| WO2014152806A1 (en) * | 2013-03-14 | 2014-09-25 | Encephalodynamics, Inc. | Electrode assemblies and electroencephalographs devices |
| CN104224166B (en) * | 2013-06-07 | 2016-11-23 | 上海帝仪科技有限公司 | Wet electrode based on conductive liquid |
| CN103330562B (en) * | 2013-07-11 | 2015-01-28 | 无锡交大联云科技有限公司 | Bionic flexible dry electrode and manufacturing method thereof |
| CN104068852A (en) * | 2014-06-28 | 2014-10-01 | 苏州格林泰克科技有限公司 | Bio-electricity signal sensor |
| CN104287727A (en) * | 2014-09-28 | 2015-01-21 | 青岛柏恩鸿泰电子科技有限公司 | Elastic and dry type soft electrode |
| CN104799853A (en) * | 2015-04-09 | 2015-07-29 | 中国科学院半导体研究所 | Tough claw type dry electrode used for recording electroencephalogram and preparation method |
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