CN103932695A - Wet electrode liquid storage tank and bio-electricity signal collecting wet electrode provided with same - Google Patents
Wet electrode liquid storage tank and bio-electricity signal collecting wet electrode provided with same Download PDFInfo
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- CN103932695A CN103932695A CN201310033606.0A CN201310033606A CN103932695A CN 103932695 A CN103932695 A CN 103932695A CN 201310033606 A CN201310033606 A CN 201310033606A CN 103932695 A CN103932695 A CN 103932695A
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Abstract
The invention relates to a wet electrode liquid storage tank and a bio-electricity signal collecting wet electrode provided with the same. The wet electrode liquid storage tank is used for measuring the electrode of a bio-electricity signal and is provided with a liquid storage cavity used for accommodating conductive liquid, wherein a skin contact part is arranged on the bottom of the liquid storage cavity and is communicated with liquid in the liquid storage cavity, and water seal holes are further formed in the bottom of the liquid storage cavity and communicated to the outside of the wet electrode liquid storage tank to enable the conductive liquid to be stably and slowly discharged from the liquid storage cavity by means of dynamic equilibrium.
Description
Technical field
The present invention relates to a kind of for measure bioelectrical signals electrode wet electrode reserving liquid tank and there is the acquiring biological electric signals wet electrode of this reserving liquid tank.
Background technology
Along with medical science, neuroscience, cognitive psychology and artificial intelligence study's deep development, bioelectrical signals is being applied to the fields such as medical science detection, clinical diagnosis and emerging brain-computer interface more and more.Electrode, as the interface between organism and external measurement devices, plays a part to transmit bioelectrical signals to measurement device, and its performance is determining the quality of bioelectrical signals.Surface wet electrode is a kind of non-intrusion type electrode, and it is easy to use, little to damage to patient, and certainty of measurement is high, and it has lower contact skin impedance compared with dry electrode, is conducive to the collection of bioelectrical signals.At present, surperficial wet electrode mostly adopts and between metal electrode board and skin, increases one deck conductive materials as conductive liquid or conductive paste, utilizes conductive liquid or conductive paste to carry out moistening skin, reaches the object that reduces electrode and contact skin impedance.The conductive materials that this kind of method not only stored is limited, has shortened electrode life cycle, and long-time use will cause conductive materials volatilization, and the impedance of electrode contact skin is increased, and causes the unstable of contact impedance, is unfavorable for the collection of bioelectrical signals.
By the known a kind of electrode system of prior art, the wet electrode of its use is fixed on metallic plate and is formed by absorbent material, first will conduct electricity drop before use on absorbent material, then by absorbent material and contact skin, thereby measures bioelectrical signals.
Defect and the weak point of above-mentioned technology are, absorbent material absorbs conductive liquid limited amount, along with the increase of service time, the conductive liquid being stored in absorbent material reduces gradually, contact impedance between skin and electrode is increased, thereby make contact impedance become unstable, be unfavorable for the accurate collection of long-term bioelectrical signals.
Known a kind of for measuring electricity physiological signal and comprising the sensor cluster of conducting bridge by CN 101227857A.This assembly has the expansible elements of absorbing material that conducting bridge is provided by one end attaching, and hole extends through expansible elements and forms chamber well.Adding conducting medium to chamber well allows conducting bridge that the conductive path between electrode and patient skin is provided.
But above-mentioned technology can not accurately and equably be controlled the release flow of conductive liquid, be unfavorable for long-time accurate acquired signal.
Summary of the invention
The present invention is directed to the problem of prior art, a kind of wet electrode reserving liquid tank has been proposed, described wet electrode reserving liquid tank is for measuring the electrode of bioelectrical signals, described wet electrode reserving liquid tank has the liquid storage cylinder for holding conductive liquid, be provided with contact skin part in the bottom of described liquid storage cylinder, described contact skin part is communicated with liquid storage cylinder fluid, the outside that is wherein also provided with water seal hole in the bottom of described liquid storage cylinder and is communicated to described wet electrode reserving liquid tank, discharges conductive liquid lentamente to make liquid storage cylinder stablize by pay-as-you-go operation.The invention solves existing wet electrode life cycle short, storage conductive materials few, use for a long time the unsettled technological deficiency of contact impedance.Be connected according to the liquid storage cylinder of reserving liquid tank of the present invention and the contact skin part of wet electrode, for wet electrode contact skin component feed conductive liquid, not only make wet electrode increase conductive materials, and extend its life cycle, and water seal hole can be controlled the flow of conductive liquid effectively, conductive liquid can evenly be discharged lentamente, and then stablized the contact impedance between wet electrode and skin, be conducive to the accurate collection of long-term bioelectrical signals.
According to a kind of favourable embodiment, be provided with tap hole in the bottom of liquid storage cylinder, described contact skin part is communicated with described liquid storage cylinder fluid by described tap hole.When injecting in reserving liquid tank after conductive liquid, the conductive liquid that tap hole flows out will be transported on electrode and parts skin joint continuously, thereby moistening skin reaches and reduces and stable contact impedance, extends the effect of electrode life cycle.
In the more simple embodiment of one, one end of contact skin part can directly extend in liquid storage cylinder, the other end for contact skin.
According to a kind of favourable embodiment, liquid storage cylinder is by upper cover, surround for the housing that holds conductive liquid.In this embodiment, can tap hole be set in the bottom of described housing.
According to a kind of favourable embodiment, contact skin part is porous metals post.This porous metals post is made up of porous materials such as POROUS TITANIUM, porous stainless steel, nickel porous.Compared with prior art, there is good water absorbing capacity according to this porous metals post for wet electrode of the present invention, thereby conductive liquid is passed to skin moistening skin by porous metals post.Porous metals post has possessed the function of transmitting conductive liquid and the function that reduces contact impedance simultaneously, has therefore further reduced the contact impedance between electrode and skin, is conducive to collection and the transmission of bioelectrical signals.
According to a kind of favourable embodiment, upper cover and housing interconnect by bonding, welding or thread connecting mode.
According to a kind of favourable embodiment, upper cover and/or housing are made up of metal or polymer.
According to a kind of favourable embodiment, upper cover and/or housing are by machining or casting.
The present invention also proposes a kind of acquiring biological electric signals wet electrode, and wherein said electrode is provided with the wet electrode reserving liquid tank described in above-mentioned every embodiment.
Brief description of the drawings
Embodiments of the invention shown in the drawings and in the following description it being explained in detail.Wherein:
Fig. 1 shows the wet electrode reserving liquid tank according to one embodiment of the present invention.
Detailed description of the invention
Fig. 1 shows according to a kind of wet electrode reserving liquid tank 100 for brain wave acquisition electrode of the present invention, and described wet electrode reserving liquid tank has liquid storage cylinder 3.In the present embodiment, this liquid storage cylinder 3 is surrounded by upper cover 31 and housing 32.The bottom of described housing 32 has tap hole 5, and described tap hole 5 is connected with contact skin part 2.This contact skin part 2 can be the conventional contact skin part of being made up of imbibition material, or is metal column, is preferably porous metals post.Upper cover 31 and housing 32 can link together by the mode such as bonding, to weld, be threaded.
In addition, in the present embodiment, described upper cover 31 and the material of housing 32 are metal or polymer and can be by machining or casting.
Because tap hole 5 is holes of minor diameter, therefore when injecting after conductive liquid in the liquid storage cylinder 3 at reserving liquid tank 100, conductive liquid flows out from tap hole 5, enters into the contact skin part 2 of being made up of imbibition material or porous metal material, and is accommodated in contact skin part 2.Now, because contact skin part 2 has absorbency, can " encase " conductive liquid, thus moistening skin, and reduce impedance.In the time that the conductive liquid in contact skin part 2 reduces because of reasons such as volatilizations, conductive liquid in liquid storage cylinder 3 is transported to continuously on contact skin part 2 via tap hole 5 under " suction " of the contact skin part 2 of absorbency, thereby ensures the effect of the moistening prolongation electrode life cycle of skin.
In addition, in Fig. 1, can further see in the bottom of liquid storage cylinder 3, also also have water seal hole 7 in described housing 32 bottoms.The diameter of water seal hole 7 is designed to be very little, and liquid can cannot directly be flowed out by this water seal hole under capillary effect.This water seal hole 7, owing to being located at liquid storage cylinder bottom, therefore, in the time injecting conductive liquid, is sealed by conductive liquid.When injecting after conductive liquid in reserving liquid tank 100, the conductive liquid flowing out via tap hole 5 will constantly be transported on the contact skin part 2 of wet electrode.In the time that in reserving liquid tank 100, liquid level drops to certain altitude, because the volume of air in reserving liquid tank 100 interior reservoir sap cavities 3 increases, the suffered conductive liquid institute applied pressure sum in the air pressure of liquid level top and the bottom of liquid storage cylinder 3 is less than the atmospheric pressure of reserving liquid tank 100 outsides, therefore, conductive liquid cannot continue to flow out from tap hole 5.Now, in the position of water seal hole 7, because external pressure is greater than the pressure sum of reserving liquid tank 100 air pressure inside and conductive liquid, extraneous air enters by water seal hole 7 in the liquid storage cylinder 3 of reserving liquid tank 100, make external and internal pressure roughly equal, now the tap hole 5 in liquid storage cylinder 3 can continue to flow out conductive liquid, thereby reach pay-as-you-go operation, effectively control the liquid outlet quantity of tap hole 5, tap hole 5 can be stablized and discharge lentamente conductive liquid, thereby reduce and stable contact impedance, extend the life cycle of electrode.
Although do not illustrate, but what can expect is, the reserving liquid tank with water seal hole 7 100 shown in Fig. 1 can be used in known any one for gather bioelectrical signals wet electrode so that conductive liquid evenly discharge lentamente, thereby the further contact impedance between stabilized electrodes and skin.
Protection scope of the present invention is only defined by the claims.Have benefited from instruction of the present invention; those skilled in the art can make various modification, amendment or replacement to the present invention as the case may be in the situation that not exceeding protection scope of the present invention, and these modification, amendment or replacement fall into protection scope of the present invention.
Claims (8)
1. a wet electrode reserving liquid tank, described wet electrode reserving liquid tank is for measuring the electrode of bioelectrical signals, described wet electrode reserving liquid tank has the liquid storage cylinder (3) for holding conductive liquid, be provided with contact skin part (2) in the bottom of described liquid storage cylinder, described contact skin part (2) is communicated with liquid storage cylinder (3) fluid, the outside that is wherein also provided with water seal hole (7) in the bottom of described liquid storage cylinder (3) and is communicated to described wet electrode reserving liquid tank, discharges conductive liquid lentamente to make liquid storage cylinder (3) stablize by pay-as-you-go operation.
2. wet electrode reserving liquid tank according to claim 1, it is characterized in that, be provided with tap hole (5) in the bottom of described liquid storage cylinder (3), described contact skin part (2) is communicated with described liquid storage cylinder (3) fluid by described tap hole (5).
3. wet electrode reserving liquid tank according to claim 1, is characterized in that, described liquid storage cylinder (3) is surrounded by upper cover (31) and housing (32).
4. wet electrode reserving liquid tank according to claim 1, is characterized in that, described contact skin part (2) is porous metals post.
5. wet electrode reserving liquid tank according to claim 3, is characterized in that, described upper cover (31) and housing (32) interconnect by bonding, welding or thread connecting mode.
6. wet electrode reserving liquid tank according to claim 3, is characterized in that, described upper cover (31) and/or housing (32) are made up of metal or polymer.
7. wet electrode reserving liquid tank according to claim 3, is characterized in that, described upper cover (31) and/or housing (32) are by machining or casting.
8. an acquiring biological electric signals wet electrode, is characterized in that, described electrode is provided with the wet electrode reserving liquid tank described in any one in the claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033606.0A CN103932695B (en) | 2013-01-23 | 2013-01-23 | Wet electrode liquid reserve tank and the acquiring biological electric signals wet electrode with this liquid reserve tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033606.0A CN103932695B (en) | 2013-01-23 | 2013-01-23 | Wet electrode liquid reserve tank and the acquiring biological electric signals wet electrode with this liquid reserve tank |
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| CN103932695A true CN103932695A (en) | 2014-07-23 |
| CN103932695B CN103932695B (en) | 2016-11-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109875554A (en) * | 2019-02-26 | 2019-06-14 | 清华大学 | Flexible non-embedded brain-computer interface electrode and preparation method thereof and brain-computer interface module |
| CN110072450A (en) * | 2018-02-28 | 2019-07-30 | 北京布润科技有限责任公司 | A kind of bioelectricity acquisition electrode and brain wave acquisition cap |
| CN111134655A (en) * | 2020-01-16 | 2020-05-12 | 南京大学 | Humidification design of bioelectrode |
| CN112914584A (en) * | 2021-02-25 | 2021-06-08 | 中国人民解放军陆军特色医学中心 | Electrocardiogram acquisition system with guiding function |
| CN113069119A (en) * | 2021-03-25 | 2021-07-06 | 潍坊歌尔电子有限公司 | Wearable equipment |
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| CN85100553A (en) * | 1985-04-01 | 1986-08-20 | 浙江大学 | A kind of measuring electrode for electrocardiogram used in front of chest |
| JPH03118037A (en) * | 1989-10-02 | 1991-05-20 | Nippondenso Co Ltd | Skin potential detector |
| CN2636818Y (en) * | 2003-07-17 | 2004-09-01 | 刘建夏 | Diposable electrode for electrocardiograph |
| CN101744526A (en) * | 2010-02-04 | 2010-06-23 | 吴加钿 | Multi-functional energy-saving boiler |
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| CN85100554A (en) * | 1985-04-01 | 1986-08-13 | 浙江大学 | A kind of EEG measurement electrode |
| CN85100553A (en) * | 1985-04-01 | 1986-08-20 | 浙江大学 | A kind of measuring electrode for electrocardiogram used in front of chest |
| JPH03118037A (en) * | 1989-10-02 | 1991-05-20 | Nippondenso Co Ltd | Skin potential detector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072450A (en) * | 2018-02-28 | 2019-07-30 | 北京布润科技有限责任公司 | A kind of bioelectricity acquisition electrode and brain wave acquisition cap |
| WO2019165606A1 (en) * | 2018-02-28 | 2019-09-06 | 陈晓苏 | Bioelectricity acquisition electrode and electroencephalogram acquisition cap |
| CN109875554A (en) * | 2019-02-26 | 2019-06-14 | 清华大学 | Flexible non-embedded brain-computer interface electrode and preparation method thereof and brain-computer interface module |
| CN111134655A (en) * | 2020-01-16 | 2020-05-12 | 南京大学 | Humidification design of bioelectrode |
| CN112914584A (en) * | 2021-02-25 | 2021-06-08 | 中国人民解放军陆军特色医学中心 | Electrocardiogram acquisition system with guiding function |
| CN113069119A (en) * | 2021-03-25 | 2021-07-06 | 潍坊歌尔电子有限公司 | Wearable equipment |
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| Publication number | Publication date |
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| CN103932695B (en) | 2016-11-02 |
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Effective date of registration: 20201124 Address after: Room 818, 8 / F, No.4 building, incubation base, No.11 tangshou street, Tanghuai Park, Taiyuan City, Shanxi Province Patentee after: Shanxi Di Yi an Technology Co.,Ltd. Address before: 201203 Shanghai Guo Shou Jing Road, Zhangjiang hi tech Park No. 351 Building No. 2 room 657-11 Patentee before: SHANGHAI DIYI SCIENCE & TECHNOLOGY Co.,Ltd. |