CN103393419B - A kind of biomedical electrode and manufacture method thereof with surface micro-structure array - Google Patents
A kind of biomedical electrode and manufacture method thereof with surface micro-structure array Download PDFInfo
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Abstract
There is biomedical electrode and the manufacture method thereof of surface micro-structure array, relate to a kind of biomedical electrode.The described biomedical electrode with surface micro-structure array feature is provided with metal electric pole piece, foamed materials backing and shielded conductor.Using the raw material of foil as metal electric pole piece, adopt laser micro-machining technology to be formed on metal electric pole piece having fore-and-aft distance is 0.1 ~ 0.3mm, lateral separation is the micro structure array of 0.1 ~ 0.3mm, remove oxide layer and impurity with hydrochloric acid after cleaning-drying, then plate Au or Ag/AgCl thin layer with after alcohol washes at metal electrode wicking surface; Metal electric pole piece is fastened with glue in the surface of foamed materials backing; Shielded conductor is penetrated foamed materials backing, and be connected to metal electrode wicking surface by filled conductive elargol mode, metal electric pole piece can be formed to be connected with the solderless of shielded conductor after conductive silver glue solidification, the biomedical electrode of surface micro-structure array must be had.
Description
Technical field
The present invention relates to a kind of biomedical electrode, particularly relate to a kind of biomedical electrode and the manufacture method thereof with surface micro-structure array feature.
Background technology
Bio electricity is the most basic physiological phenomenon of organism, and the measurement of various bioelectric potential all needs to use biomedical electrode.In bio electricity collection and measuring process, electrode system is often positioned at test macro foremost, clinically by the information exchange of line correlation of being gone forward side by side by direct and contact human skin and transmission, becomes one of key part affecting whole measuring system.And electrode also will there is a series of event, comprising useful information, noise, artifact, contact impedance, polarizing voltage etc., capital enters subsequent conditioning circuit and is exaggerated, transmits, and participate in signal processing, and garbage even can flood effective information data sometimes in some cases, considerable influence is caused to systems axiol-ogy sensitivity and measuring accuracy.The change of the electrode parameter such as quantity, kind, structural parameters, configuration of electrodes of electrode used in a test system also has a strong impact on also causing the stability of measuring system.Therefore, in bio electricity collection and measuring process, electrode system faces a series of practical problem, requires further improvement the performance of electrode.
At present, the most widely used in conventional bioelectric measurement process is traditional Ag/AgCl electrode.Ag/AgCl electrode is generally made up of parts such as electrode cores, Ag/AgCl layer, Signa Gel, non-woven fabrics.Ag/AgCl electrode can not only convert ion current to electronic current under reduced-current condition, and have signal of telecommunication baseline stability, capacity of resisting disturbance, manufacture and use comparatively for convenience of, low price, be easy to advantages such as producing, in electrocardio, EEG measuring, obtain extensive clinical practice.But, due to the existence of Signa Gel, in use easily there is dehydrate in Ag/AgCl electrode, make the electrical characteristics of Signa Gel that some change occur, be not suitable for long-term use continuously, and easily introduce larger noise and error in high accuracy experiment, thus cause the inaccurate of measurement result.In addition, before use Ag/AgCl electrode, effectively must process skin, wipe the horny layer of skin surface as far as possible, before using, need certain time.More seriously, Signa Gel may cause the anaphylaxis of skin in addition, produces the phenomenons such as red and swollen, thus makes some measuring process be difficult to carry out.Therefore, for effectively improving sensitivity and the precision of bioelectric measurement system, the new bio medical electrode developing alternative Ag/AgCl electrode become one of key problem in current biological electricity research field.
Chinese patent CN102169103A discloses a kind of solid-state Ag/AgCl electrode cores, its preparation method and application, and described solid-state Ag/AgCl electrode cores comprises the component of following percentage by weight: the argentum powder 30% ~ 70% of argentum powder 30% ~ 70%, surface coverage silver chloride.This invention scientific formulation, preparation technology is reasonable, by the technical scheme adopting the argentum powder of surface coverage silver chloride to replace silver chloride powder in prior art, overcome existing electrode cores and use the problem that the chemical property of generation drifts about, stable phase is short in the seawater, achieve and use the advantage that chemical property is good, stable phase is long in the seawater.
Summary of the invention
The object of the invention is to in bio electricity collection and measuring process, be not suitable for the problems such as life-time service, repeatability is poor, measurement result is inaccurate existing for traditional Ag/AgCl electrode, a kind of biomedical electrode and manufacture method thereof with surface micro-structure array that can repeatedly repeat with life-time service is provided.
The described biomedical electrode with surface micro-structure array feature is provided with metal electric pole piece, foamed materials backing and shielded conductor; Described metal electric pole piece is located at the upper surface of foamed materials backing, and metal electric pole piece is provided with micro structure array; One end of described shielded conductor penetrates foamed materials backing from the lower surface of foamed materials backing and is connected with metal electric pole piece.
Described metal electric pole piece can adopt copper electrode core, aluminum electrode cores or stainless steel electrode core etc.
Described micro structure array can adopt taper microstructure array, cylindricality micro structure array or circular micro structure array etc.; Micro structure array can adopt circumference array or linear array etc.
Micro structure fore-and-aft distance in described micro structure array can be 0.1 ~ 0.3mm, and lateral separation can be 0.1 ~ 0.3mm.
Described micro structure array is preferably located at the upper surface middle part of foamed materials backing.
Described micro structure array preferably fastens with glue at the upper surface of foamed materials backing.
One end of described shielded conductor is connected preferably by the surface of filled conductive elargol with metal electric pole piece.
One end of described shielded conductor penetrates the center of foamed materials backing from the lower surface of foamed materials backing and is connected with metal electric pole piece.
The described manufacture method with the biomedical electrode of surface micro-structure array, comprises the following steps:
1) using the raw material of foil as metal electric pole piece, adopt laser micro-machining technology to be formed on metal electric pole piece having fore-and-aft distance is 0.1 ~ 0.3mm, lateral separation is the micro structure array of 0.1 ~ 0.3mm, after cleaning-drying, with hydrochloric acid except oxide layer and impurity, again with after alcohol washes, at metal electrode wicking surface plating Au or Ag/AgCl thin layer;
2) metal electric pole piece is fastened with glue in the surface of foamed materials backing;
3) shielded conductor is penetrated foamed materials backing, and be connected to metal electrode wicking surface by filled conductive elargol mode, can form metal electric pole piece to be connected with the solderless of shielded conductor after conductive silver glue solidification, final acquisition has the biomedical electrode of surface micro-structure array.
In step 1), described foil preferably adopts red copper foil; Described micro structure array can adopt taper microstructure array, cylindricality micro structure array or circular micro structure array etc.; Described hydrochloric acid can adopt concentration to be 5%HCl hydrochloric acid; The method of described plating Au or Ag/AgCl thin layer can adopt EFI or plating; The thickness of described plating Au or Ag/AgCl thin layer can be 5 ~ 10 μm, to construct good electrode and the interface of skin.
The biomedical electrode with surface micro-structure array feature manufactured by the present invention, the reliable contacts of electrode surface and human body skin can be ensured, reduce its contact impedance, the design of foam backing material can reduce the signal disturbing brought in motor process, and conductive silver glue then can realize metal electric pole piece and be connected with the solderless of shielded conductor.Therefore, this electrode have reusable, contact impedance is little, be suitable for life-time service, certainty of measurement is high, scope of application advantage widely, thus greatly can improve the precision of bio electricity collection and measurement.
Compared with prior art, the present invention has following features:
The present invention adopts Laser Micro-Machining metal electrode wicking surface, and after it being connected with foam backing material, utilizes conductive silver glue it to be connected with shielded conductor, manufactures and forms a kind of biomedical electrode with surface micro-structure array feature.The process for making of employing the method is relatively simple, process equipment is less demanding, production cost is moderate, be easy to the advantage of industrialization.And for traditional Ag/AgCl electrode, often also exist in bioelectric measurement process repeatable poor, measurement result is inaccurate, contact is poor, easily causes the series of problems such as skin allergy.The biomedical electrode of the surface micro-structure array feature utilizing this kind of manufacture method to be formed, because its surface micro-structure can improve electrode surface and contact human skin's situation, can effectively reduce its contact impedance.Foam-back structure at the metal electric pole piece back side can effectively be reduced in the signal disturbing brought in motor process, effectively expands the scope of application of electrode.In addition, conductive silver glue achieves metal electric pole piece and is connected with the solderless of shielded conductor, effectively avoids the negative effect caused to test macro due to failure welding.Therefore, utilize the biomedical electrode with surface micro-structure array feature of this kind of method manufacture, not only ensure the reliable contacts of human body skin and electrode in use procedure, but also there is the many merits such as reusable, contact impedance is little, be suitable for life-time service, certainty of measurement is high, the scope of application is extensive.The signals collecting excellent due to it and stable testing characteristic, the research and apply field in bio electricity field is had boundless application prospect by this kind of biomedical electrode.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram with the biomedical electrode embodiment of surface micro-structure array feature of the present invention.
Fig. 2 is the structure schematic diagram with the biomedical electrode embodiment of surface micro-structure array feature of the present invention.
Fig. 3 is the scanning electron microscope (SEM) photograph that the embodiment of the present invention 1 has the metal electrode wicking surface micro structure array of the biomedical electrode embodiment of surface micro-structure array feature.
Detailed description of the invention
The specific embodiment of the present invention is described in further detail below, but embodiments of the present invention are not limited thereto.
Embodiment 1:
As shown in Figures 1 to 3, a kind of biomedical electrode with surface micro-structure array feature, comprises metal electric pole piece 1, foamed materials backing 2, conductive silver glue 3 and shielded conductor 4 four part.Metal electric pole piece 1 is pasted on the opposite side of foamed materials backing 2, as shown in Figure 1.Foam backing material 2 realizes solderless with shielded conductor 4 by conductive silver glue 3 and is connected, as shown in Figure 2.There is surperficial taper micro structure array feature, as shown in Figure 3 on the surface of metal electric pole piece.
Method of manufacturing technology comprises the following steps:
First step Laser Processing.Select red copper foil as the raw material of metal electric pole piece, by design Laser Processing route, and adopt laser micro-machining technology to be formed to have spacing be in length and breadth the linear array of 0.1mm × 0.1mm conical surface micro structure.
Second step cleaning-drying.Metal electric pole piece needing after Laser Micro-Machining is used before use except oxide layer or other impurity in dilute hydrochloric acid (5%HCl), and also keeps the clean and tidy of surface with alcohol washes again.
3rd step overlay coating.Metal electric pole piece recycles Au or the Ag/AgCl thin layer that EFI or electroplating technology additional thickness are 5 ~ 10 microns after cleaning, to construct good electrode and the interface of skin.
4th step pastes foam backing material.Metal electric pole piece fastens with glue in the surface of foamed materials backing, and ensures that it connects reliably, to reduce the probability that electrode use procedure comes off.
5th step conductive silver glue connects.Shielded conductor will penetrate foamed materials backing, metal electrode wicking surface is connected to by filled conductive elargol mode, can form metal electric pole piece to be connected with the solderless of shielded conductor after conductive silver glue solidification, final acquisition has the biomedical electrode of surface micro-structure array feature.
Adopt the biomedical electrode with surface micro-structure array feature manufactured by the method, the reliable contacts of electrode surface and human body skin can be ensured, reduce its contact impedance, the design of foam backing material can reduce the signal disturbing brought in motor process, and conductive silver glue then can realize metal electric pole piece and be connected with the solderless of shielded conductor.Therefore, this electrode have reusable, contact impedance is little, be suitable for life-time service, certainty of measurement is high, scope of application advantage widely, thus greatly can improve the precision of bio electricity collection and measurement.
Embodiment 2:
The raw material of the electrode cores of the first step can be chosen as metallic aluminium sheeting, utilizes Laser Processing can form the linear array of the columnar microstructure that spacing is in length and breadth 0.2mm × 0.2mm.Other are identical with embodiment 1.
Embodiment 3:
The raw material of the electrode cores of the first step can be chosen as Thin Stainless Steel sheet material, utilizes Laser Processing can form the linear array of the circular micro structure that spacing is in length and breadth 0.3mm × 0.3mm.Other are identical with embodiment 1.
Claims (7)
1. there is a manufacture method for the biomedical electrode of surface micro-structure array, it is characterized in that described a kind of biomedical electrode with surface micro-structure array is provided with metal electric pole piece, foamed materials backing and shielded conductor; Described metal electric pole piece is located at the upper surface of foamed materials backing, and metal electric pole piece is provided with micro structure array; One end of described shielded conductor penetrates foamed materials backing from the lower surface of foamed materials backing and is connected with metal electric pole piece;
Described micro structure array adopts taper microstructure array, cylindricality micro structure array or circular micro structure array; Micro structure array adopts circumference array or linear array;
Micro structure fore-and-aft distance in described micro structure array is 0.1 ~ 0.3mm, and lateral separation is 0.1 ~ 0.3mm;
Described manufacture method comprises the following steps:
1) using the raw material of foil as metal electric pole piece, adopt laser micro-machining technology to be formed on metal electric pole piece having fore-and-aft distance is 0.1 ~ 0.3mm, lateral separation is the micro structure array of 0.1 ~ 0.3mm, after cleaning-drying, with hydrochloric acid except oxide layer and impurity, again with after alcohol washes, at metal electrode wicking surface plating Au or Ag/AgCl thin layer;
2) metal electric pole piece is fastened with glue in the surface of foamed materials backing;
3) shielded conductor is penetrated foamed materials backing, and be connected to metal electrode wicking surface by filled conductive elargol mode, after conductive silver glue solidification, namely form metal electric pole piece be connected with the solderless of shielded conductor, final acquisition has the biomedical electrode of surface micro-structure array.
2. a kind of manufacture method with the biomedical electrode of surface micro-structure array as claimed in claim 1, is characterized in that described metal electric pole piece adopts copper electrode core, aluminum electrode cores or stainless steel electrode core.
3. a kind of manufacture method with the biomedical electrode of surface micro-structure array as claimed in claim 1, is characterized in that described micro structure array is located at the upper surface middle part of foamed materials backing.
4. a kind of manufacture method with the biomedical electrode of surface micro-structure array as claimed in claim 1, is characterized in that described micro structure array fastens with glue at the upper surface of foamed materials backing.
5. a kind of manufacture method with the biomedical electrode of surface micro-structure array as claimed in claim 1, is characterized in that one end of described shielded conductor is connected by the surface of filled conductive elargol with metal electric pole piece; One end of described shielded conductor penetrates the center of foamed materials backing from the lower surface of foamed materials backing and is connected with metal electric pole piece.
6. a kind of manufacture method with the biomedical electrode of surface micro-structure array as claimed in claim 1, is characterized in that in step 1) in, described foil adopts red copper foil; Described hydrochloric acid adopts concentration to be 5%HCl hydrochloric acid.
7. a kind of manufacture method with the biomedical electrode of surface micro-structure array as claimed in claim 1, is characterized in that in step 1) in, the method for described plating Au or Ag/AgCl thin layer adopts EFI or plating; The thickness of described plating Au or Ag/AgCl thin layer is 5 ~ 10 μm.
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| CN106073752A (en) * | 2016-06-23 | 2016-11-09 | 厦门大学 | A kind of metal dry electrode tilt with microneedle configuration and manufacture method thereof |
| CN106108890B (en) * | 2016-06-23 | 2019-08-27 | 厦门大学 | A kind of medical dry electrode and its manufacturing method with high conduction performance |
| CN106175751A (en) * | 2016-07-29 | 2016-12-07 | 上海市共进通信技术有限公司 | A kind of electrode sensor location mode of Weaving type wearable electrocardiogram acquisition equipment |
| CN106618556A (en) * | 2017-02-20 | 2017-05-10 | 成都心医云科技有限公司 | Wearable dynamic cardiovascular disease monitor |
| CN209826723U (en) * | 2019-01-15 | 2019-12-24 | 浙江强脑科技有限公司 | Metal electrode |
| CN110680311B (en) * | 2019-08-30 | 2020-11-03 | 北京航空航天大学 | Dry electrode brain electricity collection system |
| JP7152818B1 (en) | 2022-01-21 | 2022-10-13 | 東和株式会社 | Biomedical electrode device |
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| CN101322645A (en) * | 2007-06-13 | 2008-12-17 | 中国科学院半导体研究所 | Method for producing skin dry electrode |
| CN102090889A (en) * | 2011-01-21 | 2011-06-15 | 中山大学 | Concentric circle type metal body surface electrode for bioelectrical impedance detection technology and manufacturing method thereof |
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| KR100805913B1 (en) * | 2005-12-16 | 2008-02-21 | 후앙 엘리스 와이 | Structure and manufacturing method of disposable electrochemical sensor strip |
| CN102920452B (en) * | 2012-11-02 | 2015-02-11 | 上海交通大学 | Graphene-based flexible coronary electrocardio-electrode and preparation method thereof |
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| CN101322645A (en) * | 2007-06-13 | 2008-12-17 | 中国科学院半导体研究所 | Method for producing skin dry electrode |
| CN102090889A (en) * | 2011-01-21 | 2011-06-15 | 中山大学 | Concentric circle type metal body surface electrode for bioelectrical impedance detection technology and manufacturing method thereof |
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