CN205181341U - Biological electricity signal transducer - Google Patents
Biological electricity signal transducer Download PDFInfo
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- CN205181341U CN205181341U CN201520796709.7U CN201520796709U CN205181341U CN 205181341 U CN205181341 U CN 205181341U CN 201520796709 U CN201520796709 U CN 201520796709U CN 205181341 U CN205181341 U CN 205181341U
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Abstract
The utility model relates to a biological electricity signal transducer, it includes the electrode body, electrolyte permeation column, electrode to and electric connector, the last closing cap that the electrode body has cavity body and cavity one end, electrolyte permeation column be that the embedding is fixed in the cavity of the electrode body to with electrode electrical contact in the cavity, the terminal surface that electrolyte permeation column exposes outside the electrode cavity physically is used for with organism skin exposure, electric connector on the electrode through the electrode body is connected with the external circuit wire, electrode on for the cavity inner wall of the electrode body and/or the conducting layer on the inner wall top surface, or conductor wire, or conducting strip. The utility model discloses the advantage is: sensor structure is reasonable, need not electrolyte stock solution chamber, and electrolyte permeation column releases the skin surface with its absorptive electrolyte solution under the supporter light pressure, and coated electrode is stable with the contact of electrolyte permeation column, and area of contact is big, therefore the impedance is low and stable, and measurement accuracy is high, wears comfortablely for a long time.
Description
Technical field
This utility model relates to bioelectrical signals sensor, be widely used in bio electricity record, measurement and stimulation, comprise armarium, mobile device, family health care, psychological cognition, game, brain-computer interface, rehabilitation training and neural marketing etc., especially for glue-free bioelectric measurement and wearable device.
Background technology
Along with the development of science and technology, the rehabilitation equipment of monitoring, diagnosing and the bio electricity feedback being widely used in various nervous system disease measured by bio electricity (as brain electricity, electrocardio, myoelectricity etc.).Important laboratory facilities of EEG measuring or cognitive psychological research.In order to obtain feeble computer signals accurately, require that electrode and scalp have good contact, electrode impedance is lower and stable.EEG measuring electrode impedance General Requirements is less than 100kOhm, is preferably less than 5kOhm.For reaching satisfied measurement impedance, needing coated with conductive glue (cream) between electrode and scalp, overcoming hair to the impact of measuring.This traditional wet electrode (referring to the electrode needing conducting resinl) uses, although reach satisfied measurement impedance, there is the problems such as consuming time and uncomfortable, seriously limits range of application.
Along with the development of portable medical and health monitoring, wearable device and ambulatory medical device need the electrode supported the use without the need to coated with conductive glue badly, namely without gel electrode.This kind ofly mainly be divided into dry electrode, half-dried electrode without gel electrode.Described dry electrode, does not namely use any electrolyte; Half-dried electrode is referred to and to be penetrated to the skin by the conducting solution (electrolyte) of trace surface by inorganic or high-molecular porous material.No matter be dry electrode or half-dried electrode, owing to not having or only leaning on electrolyte solution and the skin surface contact of trace, impedance is high relative to gum base electrode, and impedance is more responsive by the impact of electrode contact skin.Therefore, it is good that the key without gel electrode is exactly maintenance electrode and contact skin, and this just proposes new challenge to the design of electrode.
Existing dry electrode technology adopts the gold-plated pillar of tubulose of rigidity, and front end end-blocking preamplifier, although this design can pass hair preferably, exists following problem: (1) electrode-skin impedance is higher, and mobile artifact is large; (2) because rigid pillars is direct and contact skin, have stronger pain, wear uncomfortable, particularly long-time measurement is more uncomfortable.Also there is the claw-type design adopting conductive plastics to make, due to electrode-skin interface dry contact, therefore, need electrode supporting to apply larger Pressure Drop low electrode-Skin Resistance, also there is pain and uncomfortable problem.
Be CNCN103932704A with the immediate prior art of this utility model, disclose a kind of skin contacting device for wet electrode, wet electrode reserving liquid tank, and the brain wave acquisition electrode with this wet electrode reserving liquid tank.Brain wave acquisition electrode comprises crown cap, metal-back, and wet electrode reserving liquid tank, the bottom of this wet electrode reserving liquid tank is also provided with the porous metals post deviating from wet electrode reserving liquid tank and extend, for carrying conductive liquid, metal column one end and described metal polar plate are electrically connected, and the other end is used for and contact skin.This technical scheme is because porous metals post conveying conductive liquid is at skin surface, and the relatively dry electrode of impedance is lower.But electrolyte osmosis post itself can not absorb conductive liquid, need extra reserving liquid tank, complicated structure, need after conductive liquid is finished to carry out fill.In addition, after long-time use, porous metals post direct effect skin, can produce stronger pain, there is uncomfortable defect.
Summary of the invention
The purpose of this utility model is, overcomes the impedance of prior art electrode-skin too high, and long-time use causes the pain of receptor and uncomfortable defect, provides a kind of bioelectrical signals sensor.This sensor construction is reasonable, without the need to electrolyte liquid storage cylinder; Electrolyte osmosis post is under supporter light pressure, the electrolyte solution absorbed is discharged into skin surface, coated electrode and electrolyte osmosis post contact stabilization, and contact area is large, therefore impedance stabilization, signals collecting precision is high, long-time comfortable wearing, stable work time is long, is applicable to long-range acquiring biological electric signals.
The technical scheme of this utility model bioelectrical signals sensor is:
A kind of bioelectrical signals sensor, it comprises electrode body, electrolyte osmosis post, electrode, and electrical connector; Described electrode body has the upper cover of cavity body and cavity one end; Described electrolyte osmosis post be embed be fixed in the cavity of electrode body, and with electrode electrical contact in cavity; End face outside the cavity that electrolyte osmosis post exposes electrode body is for same organism contact skin; Electrode is connected with external circuit wire by the electrical connector in electrode body; Described electrode be electrode body cavity inner wall on and/or conductive layer on inwall end face, or conductor wire, or conducting strip.
Further technical scheme is:
Described bioelectrical signals sensor, the body of its electrode body and upper cover are integral type structure, and this structure is body and upper cover is one-time formed entirety, or the entirety be bonded to.
Described bioelectrical signals sensor, its electrolyte osmosis post embeds shell fragment fixing on inwall on the downside of cavity that fixing component is in the cavities electrode body, or the shell fragment to be extended in cavity by cavity lower end extenal fixation, or card column overall on lower end inner wall, or seam overall on lower end inner wall.
Described bioelectrical signals sensor, the fixing structure in the cavities of its electrolyte osmosis post embedding is that the cavity cavity of resorption diameter of electrode body is less than the tubaeform of epicoele diameter.
Described bioelectrical signals sensor, the body of its electrode body and upper cover are the split-type structural that can split, and this structure is that the external screw thread of body exterior mates with the female thread of upper cover, or body is fixedly connected with upper cover by fastener.
Described bioelectrical signals sensor, its electrical connector is box and pin; External circuit wire is connected with the box of conduction; Pin thread is conductive material, inlays or is bonded on upper cover end face that insulant makes, or with upper cover one-shot forming.
Described bioelectrical signals sensor, its electrical connector is the conducting strip on the spacer of the body perimeter being fixed on electrode body, and external circuit wire welds with conducting strip.
Above-mentioned bioelectrical signals sensor, its electrode body periphery has for fixing groove, to make, in being fixedly mounted on supporter by bioelectrical signals sensor, to form wearable harvester, as gathered cap, or bandage, or vest, the helmet etc.
This utility model beneficial effect:
1. the bioelectrical signals sensor that provides of this utility model is without the need to electrolyte liquid storage cylinder, structure is simple, only need sensor be immersed in electrolyte solution before using, the quick absorbed electrolyte of electrolyte osmosis post, can be penetrated to the skin the electrolyte solution of absorption during use surface under the pressure that supporter is slight, wet skin, reduce electrode-skin impedance fast, impedance is low and stable.
2. electrolyte osmosis post adopts the material such as sponge, foam, hydrogel to have loose structure, can absorb more electrolyte solution, can continue for a long time to permeate, can more than steady operation 12h, therefore, and the collection of applicable long-range bioelectrical signals.Sensor only need be immersed in electrolytic solution and get final product automatic absorption electrolyte supplement, relative to needing manually toward the prior art of fill electrolyte solution in liquid storage cylinder, convenient.Electrolyte osmosis post can repeated multiple timesly absorb, capillary electrolysis matter, and the time of use is long, long-time comfortable wearing.
3. electrode is silver or argentine chloride coating electrode, and greatly, compared with prior art, electrode-skin impedance is less, and can maintain Low ESR for a long time for the contact stabilization of electrode and electrolyte osmosis post and contact area.
4. electrical connector is worked as passing through the one-time formed pin thread of insulant with electrode body, the cylinder of its projection is wound around filamentary silver, external circuit is by being connected with the box of its coupling, because filamentary silver easily forms silver chloride in the electrolyte of chloride ion-containing, soak in the electrolyte even if long-time, also can not affect the precision of signals collecting.
Accompanying drawing explanation
Fig. 1 is the front view of the broken section of a biological electric signal sensor embodiment; Electrode body is integral type, electrolyte osmosis post is cylindrical, electrode is conductive layer, electrode connecting piece and upper cover inner top surface develop, what stationary electrolyte permeated post is shell fragment fixing on inwall: electrical connector is box and pin, pin thread has electrode cable, and described conductive layer is silver or the silver/argentine chloride coating of cavity inner wall.
Fig. 2 is the top view of the broken section of Fig. 1.
Fig. 3 is the front view of the broken section of biological another embodiment of electric signal sensor; Electrode body is integral type, and electrolyte osmosis post is cylindrical, and electrode is conducting strip, and this conducting strip is electrode connecting piece simultaneously, and from upper cover inner top surface to downward-extension, what stationary electrolyte permeated post is shell fragment fixing on inwall.
Fig. 4 is the front view of the broken section of biological another embodiment of electric signal sensor; Electrode body is integral type, electrolyte osmosis post is that lower diameter bottom is less than the cylindrical of upper diameter, electrode is conductive layer, electrode cable and the direct UNICOM of upper cover inner top surface conductive layer, stationary electrolyte infiltration post be the shell fragment that the body exterior being fixed on electrode body stretches to inwall.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the front view of the axial full section of biological another embodiment of electric signal sensor; Electrical connector pin thread is electric conductor, is inlaid in the upper cover that insulant makes, stationary electrolyte infiltration post be holistic card column with inwall.
Fig. 7 is the A-A sectional view of Fig. 6.
Fig. 8 is the front view of the broken section of biological another embodiment of electric signal sensor; The cavity of electrode body is tubaeform, and its cavity of resorption diameter is less than epicoele diameter.
Fig. 9 is the front view of the broken section of biological another embodiment of electric signal sensor; Electrical connector is the schematic diagram of the conducting strip be fixed on the spacer of electrode body periphery; External circuit wire is connected with conducting strip.
Figure 10 is the front view of the axial full section of biological another embodiment of electric signal sensor; Electrode body is split type, and the body of electrode body and upper cover are the split-type structural that can split; The external screw thread of this body exterior mates with the female thread of upper cover; There is the seam for embedding stationary electrolyte infiltration post the lower end of cavity.
Figure 11 is the front view of electrode body upper cover broken section; Electrical connector and upper cover are insulant one-shot forming, and the cylinder of electrical connector pin thread is wound around filamentary silver.
Figure 12 is the B-B sectional view of Figure 11; The filamentary silver that electrical connector pin thread cylinder is wound around is through being bonded on electrode body inner surface after the upper cover of electrode body; In the present embodiment, electrode is silver or the silver/argentine chloride coating of electrode body upper cover inner surface; The filamentary silver be bonded on electrode body inner surface can also be independent of electrode.
In figure: 1-electrode body; The cavity of 1.1-electrode body; The body of 1.2-electrode body; 1.3-electrode body seals up lid; 2-electrolyte osmosis post; 3-electrode; 3.1-electrode cable; 3.2-electrode in flakes; 4-electrical connector; 4.1-pin thread; 4.2-box; 5-filamentary silver; 6-spacer; 7-conducting strip; 8-electrolyte osmosis post fixture; 8.1-shell fragment; 8.2-card column; 8.3-seam; 9-external circuit wire; The cavity of resorption of a-electrode body; The epicoele of b-electrode body.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail:
embodiment 1:it is a basic embodiment of the present utility model.As shown in drawings, a kind of bioelectrical signals sensor, it comprises electrode body 1, electrolyte osmosis post 2, electrode 3, and electrical connector 4; Described electrode body 1 has the upper cover 1.3 of cavity 1.1 body 1.2 and cavity one end; Described electrolyte osmosis post 2 be embed be fixed in the cavity 1.1 of electrode body, and with electrode in cavity 3 electrical contact; End face outside the cavity 1.1 that electrolyte osmosis post 2 exposes electrode body is for same organism contact skin; Electrode 3 is connected with external circuit wire 9 by the electrical connector 4 in electrode body 1; Described electrode 3 be electrode body cavity 1.1 inwall on and/or conductive layer on inwall end face, or conductor wire, or conducting strip.
Compared with prior art, bioelectrical signals sensor of the present utility model, without the need to electrolyte liquid storage cylinder, structure is simple, is immersed in electrolyte solution, the quick absorbed electrolyte of electrolyte osmosis post before using by sensor, can be penetrated to the skin the electrolyte solution of absorption during use surface under the pressure that supporter is slight, wet skin, reduce electrode-skin impedance fast, impedance is low and stable.Because electrolyte osmosis post is sponge, foam, hydrogel, fiber and other material, there is loose structure, can more electrolyte solution be absorbed, infiltration can be continued for a long time, can more than steady operation 12h, therefore, be applicable to the collection of long-range bioelectrical signals.Sensor only need be immersed in electrolytic solution and get final product automatic absorption electrolyte supplement, and prior art needs fill electrolyte solution, convenient.Electrolyte osmosis post can repeated multiple timesly absorb, capillary electrolysis matter, and the time of use is long, long-time comfortable wearing.
embodiment 2:it is further embodiment.As shown in accompanying drawing 1 ~ 9, on the basis of embodiment 1, described bioelectrical signals sensor, body 1.2 and the upper cover 1.3 of its electrode body 1 are integral type structure, and this structure is body 1.2 is one-time formed entirety with upper cover 1.3, or the entirety be bonded to.Overall structure is easy to use, and technique is simple, and materials are few, and cost is low.Conductive layer be on electrode body cavity inner wall and/or the coating of inwall top surface or the silver layer that plates or silver/silver chloride layer.Described silver or silver/argentine chloride coating directly with the electrical connector of described electrode body end face, described silver or silver/argentine chloride coating only can also be coated to the inner surface of electrode body upper cover, also can simultaneously in the equal spoon coating of the body cavity inner surface of electrode body.Advantage is: electrode is silver or argentine chloride coating electrode, and comparatively greatly, compared with prior art, electrode-skin impedance is less, and can maintain Low ESR for a long time for the contact stabilization of electrode and electrolyte osmosis post and contact area.Compared with the technical scheme exposing volume density of electrode end-blocking a little with electrode pillar, even if the electrolyte that the sponge on top absorbs is finished, the inwall below electrode body inner chamber still has coating and electrode to contact with porous permeable post, and therefore the working sensor time is longer.Described electrolyte osmosis post 2 is made for sponge or foam or hydrogel or fibrous material.Described fiber is good with Plant fiber, as Cotton Gossypii, can also be the hollow cotton of inorganic chemical.
embodiment 3:it is further embodiment.As shown in accompanying drawing 3,4,5, on the basis of embodiment 1, described bioelectrical signals sensor, its electrolyte osmosis post 2 embeds shell fragment 8.1 as shown in Fig. 1,3,9 fixing on inwall on the downside of cavity 1.1 that the component be fixed in cavity 1.1 is electrode body; Embodiment is in addition: the shell fragment 8.1 extended in cavity by cavity lower end extenal fixation as shown in Figure 4,5; Card column 8.2 overall on lower end inner wall as shown in Figure 6; Seam 8.3 overall on lower end inner wall as shown in Figure 10.Shell fragment 8.1, card column 8.2 are be uniformly distributed on cavity 1.1 inwall.Shell fragment 8.1, or block 8.2, or seam 8.3 is for holding fixing by electrolyte osmosis post 2, prevents electrolyte osmosis post from dropping in use.
As shown in Fig. 1,3,9, electrolyte osmosis post 2 is cylindrical.
embodiment 4:it is further embodiment.As shown in accompanying drawing 8,10, on the basis of embodiment 1, described bioelectrical signals sensor, the electrolyte osmosis post 2 embedding structure be fixed in cavity 1.1 is that the cavity 1.1 cavity of resorption diameter a of electrode body is less than the tubaeform of epicoele diameter b, also be for the electrolyte osmosis post 2 of electrolyte solution is held fixing, prevent electrolyte osmosis post from dropping in use, this structure is simpler, easy to use.
embodiment 5:it is further embodiment.As shown in Figure 10, on the basis of embodiment 1, body 1.2 and the upper cover 1.3 of electrode body 1 are the split-type structural that can split, and this structure is that the external screw thread of body 1.2 outside mates with the female thread of upper cover 1.3.Advantage is convenient for changing electrolyte osmosis post, can using porous permeable post as medical disposable material.Described electrolyte osmosis post 2 is taper, and because the cavity Inner electrolysis matter infiltration post of electrode body and the upper end of electrode contact are greater than the lower end of work, electrolyte osmosis post not easily drops from electrode body cavity.
The scheme similar with the present embodiment 5 also has: be fixedly connected with upper cover 1.3 by fastener by body 1.2.
embodiment 6:it is further embodiment.As shown in accompanying drawing 1,3,4,5,6,8,10,11, on the basis of embodiment 1, described bioelectrical signals sensor, electrical connector 4 is box and pin; External circuit wire 9 is connected with the box 4.2 of conduction; Pin thread 4.1 be as Fig. 3,6,10 conductive materials, inlay or be bonded on upper cover 1.3 end face that insulant makes, or with upper cover 1.3 one-shot forming.Described conduction box is made up of metal or conductive plastics or electric silica gel material with conduction pin thread.The preferred conductive plastics of described conductive material, electric silica gel.This sensor construction is simple, easy to process.Electrical connector 4 is connected by male and female button with external circuit, both can realize the electrical connection with external circuit, has been fixed on supporter by sensor again by pin thread, box.Sensor can fixedly mount on supporter as required neatly, improves the utilization rate of sensor.
As shown in accompanying drawing 1,4,5,8,11, described bioelectrical signals sensor, the pin thread 4.1 of electrical connector 4 is non-conducting material, and this pin thread and upper cover 1.3 are by insulant one-shot forming; The cylinder of its projection of pin thread 4.1 is wound around filamentary silver 5, and this filamentary silver 5 is connected with electrode 3.Described filamentary silver, through electrode body upper cover, is fixed on electrode body upper cover inner surface.
embodiment 7:it is further embodiment.As shown in Figure 9, described electrical connector 4 is for being fixed on the conducting strip 7 on the spacer 6 of body 1.2 periphery of electrode body, and external circuit wire 9 welds with conducting strip 7.Described electrical connector 4 can also be the external circuit wire 9 being directly welded on electrode 3.
As shown in accompanying drawing 11,12, filamentary silver can directly with as the silver of electrode or silver/argentine chloride coating be connected.Because filamentary silver easily forms silver chloride in the electrolyte of chloride ion-containing, therefore, soak in the electrolyte even if long-time, also can not affect the precision of signals collecting.The filamentary silver be bonded in the present embodiment on electrode body inner surface can also be independent of electrode.
Above-mentioned bioelectrical signals can be fixedly mounted on the supporter as support belt or cap by the outside draw-in groove of body 1.2 of box and pin or electrode body, forms wearable harvester, as gathered cap, or bandage, or vest, the helmet etc.
Claims of the present utility model is not limited to above-described embodiment.
Claims (7)
1. a bioelectrical signals sensor, is characterized in that, comprises electrode body (1), electrolyte osmosis post (2), electrode (3), and electrical connector (4); Described electrode body (1) has the upper cover (1.3) of cavity (1.1) body (1.2) and cavity one end; Described electrolyte osmosis post (2) be embed be fixed in the cavity (1.1) of electrode body, and with electrode in cavity (3) electrical contact; End face outside the cavity (1.1) that electrolyte osmosis post (2) exposes electrode body is used for organism contact skin; Electrode (3) is connected with external circuit wire (9) by the electrical connector (4) in electrode body (1); Conductive layer on cavity (1.1) inwall that described electrode (3) is electrode body and/or on inwall end face, or conductor wire, or conducting strip.
2. bioelectrical signals sensor according to claim 1, it is characterized in that, body (1.2) and the upper cover (1.3) of electrode body (1) are integral type structure, and this structure is body (1.2) is one-time formed entirety with upper cover (1.3), or the entirety be bonded to.
3. bioelectrical signals sensor according to claim 1, it is characterized in that, it is shell fragment (8.1) fixing on cavity (1.1) the downside inwall of electrode body that electrolyte osmosis post (2) embeds the component be fixed in cavity (1.1), or the shell fragment (8.1) to be extended in cavity by cavity lower end extenal fixation, or overall card column (8.2) on lower end inner wall, or seam (8.3) overall on lower end inner wall.
4. bioelectrical signals sensor according to claim 1, is characterized in that, electrolyte osmosis post (2) the embedding structure be fixed in cavity (1.1) is that cavity (1.1) the cavity of resorption diameter of electrode body is less than the tubaeform of epicoele diameter.
5. bioelectrical signals sensor according to claim 1, it is characterized in that, body (1.2) and the upper cover (1.3) of electrode body (1) are the split-type structural that can split, this structure is that the external screw thread of body (1.2) outside mates with the female thread of upper cover (1.3), or body (1.2) is fixedly connected with upper cover (1.3) by fastener.
6. bioelectrical signals sensor according to claim 1, is characterized in that, described electrical connector (4) is box and pin; External circuit wire (9) is connected with the box (4.2) of conduction; Pin thread (4.1) is conductive material, inlays or is bonded on upper cover (1.3) end face that insulant makes, or with upper cover (1.3) one-shot forming.
7. bioelectrical signals sensor according to claim 1, it is characterized in that, described electrical connector (4) is for being fixed on the conducting strip (7) on the spacer (6) of body (1.2) periphery of electrode body, and external circuit wire (9) welds with conducting strip (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796709.7U CN205181341U (en) | 2015-10-15 | 2015-10-15 | Biological electricity signal transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796709.7U CN205181341U (en) | 2015-10-15 | 2015-10-15 | Biological electricity signal transducer |
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| CN205181341U true CN205181341U (en) | 2016-04-27 |
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| CN201520796709.7U Active CN205181341U (en) | 2015-10-15 | 2015-10-15 | Biological electricity signal transducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232035A (en) * | 2015-10-15 | 2016-01-13 | 苏州格林泰克科技有限公司 | Bioelectric signal sensor |
| US20210038367A1 (en) * | 2018-04-04 | 2021-02-11 | Gc Aesthetics (Manufacturing) Limited | Implant |
-
2015
- 2015-10-15 CN CN201520796709.7U patent/CN205181341U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232035A (en) * | 2015-10-15 | 2016-01-13 | 苏州格林泰克科技有限公司 | Bioelectric signal sensor |
| CN105232035B (en) * | 2015-10-15 | 2018-11-02 | 苏州格林泰克科技有限公司 | A kind of bioelectrical signals sensor |
| US20210038367A1 (en) * | 2018-04-04 | 2021-02-11 | Gc Aesthetics (Manufacturing) Limited | Implant |
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