CN103230271A - Wearable electrode array capable of being used for obtaining myoelectric signals of surfaces of arms and legs - Google Patents
Wearable electrode array capable of being used for obtaining myoelectric signals of surfaces of arms and legs Download PDFInfo
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- CN103230271A CN103230271A CN2013101648553A CN201310164855A CN103230271A CN 103230271 A CN103230271 A CN 103230271A CN 2013101648553 A CN2013101648553 A CN 2013101648553A CN 201310164855 A CN201310164855 A CN 201310164855A CN 103230271 A CN103230271 A CN 103230271A
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Abstract
The invention discloses a wearable electrode array capable of being used for obtaining myoelectric signals of surfaces of arms and legs. The wearable electrode array is used for measuring myoelectric signals of human bodies and comprises an elastic substrate which is worn on one of arms and legs and a plurality of dry electrodes which contact with surfaces of arms and legs. The plurality of dry electrodes are fixed on the elastic substrate and form at least one electrode ring which encircles the elastic substrate, all dry electrodes are led out through electrode leads, distances between any two adjacent dry electrodes are equal in the at least one electrode ring, a myoelectric passage is formed inside surface skin of arms and legs between any two adjacent dry electrodes in the at least one electrode ring, and all myoelectric passages are distributed in a zigzag shape. The wearable electrode array is simple in structure, convenient to manufacture and use and capable of guaranteeing that all dry electrodes contacting with surfaces of arms and legs are not displaced during usage and keeping the consistence of distances between all dry electrodes, so that the difficulty in post processing of myoelectric signals is reduced, and the robustness of a system is improved.
Description
Technical field
The present invention relates to the electro-detection technical field of physiological signal, relate in particular to a kind of electrod-array worn that can be used for obtaining the extremity surface electromyogram signal.
Background technology
It is one of clinical inspection method commonly used at present that the physiological signal of human body or animal body is carried out electrical detection, and generally the various bioelectric potentials that absorb human body or animal body by electrode detect.The signal of telecommunication of following when electromyographic signal is muscle contraction, the electromyographic signal of measuring human body are the important method of surveying musculation in health check-up.And electromyographic signal can be applicable to detection and the diagnosis of the relevant sacred disease of muscle, also can be used as a kind of man-machine interface and is used for plant equipment, artificial limb and computer control and operation.
In general, the collection of electromyographic signal has two kinds of different means, i.e. intrusive mood electromyographic signal collection and surface electromyogram signal collection.Wherein, the intrusive mood electromyographic signal collection need be needled into muscle inside with two usually, and links to each other with the electromyographic signal collection system with electrode cable, observes the electromyographic signal feature, estimates patient's state of an illness.And the surface electromyogram signal collection only need be affixed on electrode muscle surface, namely can observe the activity of muscle in the same way.Because there is not pain in the latter, and is more welcome.The present invention relates to for the latter, multichannel ground collection surface electromyographic signal, and for the control of artificial limb.
At present the clinical assays bioelectric potential adopts the disposable electrode such as the wet type of rosette electrode mostly, reduces contact impedance by conductive paste or normal saline and contact skin between these electrodes and the skin.But, because skin wet type electrode is easily because the mobile motion artifact that produces, therefore cause the uncertain shortcoming of the electrode position of skin surface, in addition, few and equipment length setup time of myoelectricity number of channels also is the shortcoming of this class surface electromyogram signal acquisition mode.
Skin dry type electrode adopts capacity coupled principle measured signal, they do not need to use conductive paste or normal saline to come and contact skin, therefore adopt skin dry type electrode to carry out electromyographic signal collection and can improve motion artifact, and avoid conductive paste to corrosion and the stimulation of skin.But skin dry type electrode mostly is at silicon chip and adopts semiconducter process to make at present, and processing technique complexity and cost are higher.
Therefore, those skilled in the art is devoted to develop a kind of electrod-array worn that can be used for obtaining the extremity surface electromyogram signal, and it is suitable for being worn on human limb, and it is relatively stable, reusable to make between simple and its electrode the position.
Summary of the invention
Because the above-mentioned defective of prior art, technical problem to be solved by this invention provides a kind of electrod-array worn that can be used for obtaining the extremity surface electromyogram signal, becomes to be fixed in elastic substrate in array by repacking wet type electrode and with it and realizes.
For achieving the above object, the invention provides a kind of electrod-array worn that can be used for obtaining the extremity surface electromyogram signal, it is characterized in that, comprise elastic substrate and a plurality of dry type electrodes that are used for contacting with described limbs surface be used to the cartridge type that is worn on limbs, described a plurality of dry type electrode is fixed on the described elastic substrate and forms at least one around the electrode retaining collar of described elastic substrate, and each described dry type electrode is all drawn by electrode cable;
In described electrode retaining collar, any two adjacent interelectrode distances of described dry type are all equal;
Between any two adjacent described dry type electrodes in the described electrode retaining collar, form a myoelectricity passage in the skin of the top layer of described limbs, described each myoelectricity passage is in a zigzag arranges.
Further, described dry type electrode is obtained by the repacking of Ag/AgCl wet type electrode, and described repacking comprises step:
Remove the conducting resinl on the described Ag/AgCl wet type electrode;
Remove stickup sponge on the described Ag/AgCl wet type electrode along the outer rim of the metal of described Ag/AgCl wet type electrode part.
Further, wherein said limbs comprise upper limb and the lower limb of human body.
Further, comprise equally distributed elastic fiber in the described elastic substrate.
Further, the material of described elastic substrate is elastic fiber cloth.
Further, described elastic fiber comprises genuine milk collodion silk and/or multi-block polyurethane fiber.
Further, described a plurality of dry type electrode retaining collars form two or more described electrode retaining collars around described elastic substrate, and the number of the described dry type electrode in the different described electrode retaining collars is identical or different.
Further, two described dry type distance between electrodes in the different described electrode retaining collar are identical or different.
In preferred embodiments of the present invention, a kind of electrod-array worn that can be used for obtaining the extremity surface electromyogram signal is provided, it comprises elastic substrate and 16 dry type electrodes that are fixed on this elastic substrate of cartridge type.The elastic substrate of cartridge type is used for wearing in the limbs that comprise human upper limb and lower limb, and elastic substrate comprises the material of equally distributed elastic fiber by inside, and it can applied elongation and reinstatement after removing active force.16 dry type electrodes obtain for reequiping by repacking Ag/AgCl wet type electrode, and wherein the front of dry type electrode is in order to contact with the limbs surface, and the back side is connected that with the electromyographic signal collection system bioelectric potential of picked-up is drawn.Each dry type distribution of electrodes is at the inner surface of the elastic substrate of cartridge type, and the elastic substrate that the bossing on the back side of each dry type electrode passes cartridge type engages with the snap-fastener parent of the electrode cable that is connected to the electromyographic signal collection system respectively.16 dry type electrodes have formed two electrode retaining collars around elastic substrate in the elastic substrate of tubular, and each dry type electrode arrangement meets: in an electrode retaining collar, any two interelectrode distances of adjacent dry type are all equal.Use of the present inventionly when can be used for obtaining the electrod-array worn of extremity surface electromyogram signal, its elastic substrate is worn on limbs to be measured.Elastic substrate is strutted by limbs, and its restoring force will make each the applying limbs surface, front in the dry type electrode that is distributed in its inner surface.Between any two adjacent dry type electrodes in each electrode retaining collar, in the skin of the top layer of limbs, form a myoelectricity passage.The electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention each myoelectricity passage of producing of each electrode retaining collar is in use arranged for being zigzag.
This shows that the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention adopts elastic substrate to fix each dry type electrode, can wear quickly and easily, thereby reduce time of test; Though and the limbs thickness difference of different tested objects, being worn on the interelectrode distance of each dry type that of the present invention on the limbs of different thicknesses can be used for obtaining the electrod-array worn of extremity surface electromyogram signal can be inequality, but the limbs for same tested object, because the even extensibility of elastic substrate, the interelectrode distance of each dry type can be consistent, and the restoring force of elastic substrate will guarantee effectively that each dry type electrode that contacts with the limbs surface is not shifted, therefore this design of the present invention helps to simplify later stage electromyographic signal intractability, has improved the robustness of system.In addition, the dry type electrode that the present invention adopts repacking Ag/AgCl wet type electrode to obtain, method is simple and practical.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand purpose of the present invention, feature and effect fully.
Description of drawings
Fig. 1 is the expansion sketch map that can be used for obtaining the electrod-array worn of extremity surface electromyogram signal of the present invention.
Fig. 2 has shown the front of the dry type electrode of the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention that obtains by repacking Ag/AgCl wet type electrode.
Fig. 3 has shown the back side of the dry type electrode of the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention that obtains by repacking Ag/AgCl wet type electrode.
Fig. 4 has shown that worn of the present invention can be used for obtaining the back side of upper limb of the electrod-array worn of extremity surface electromyogram signals.
Fig. 5 has shown that worn of the present invention can be used for obtaining the front of upper limb of the electrod-array worn of extremity surface electromyogram signals.
The specific embodiment
Fig. 1 is in a preferred embodiment, the electrod-array the worn expansion sketch map that can be used for obtaining the extremity surface electromyogram signal of the present invention.As shown in Figure 1, in the present embodiment, the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention comprises elastic substrate 20 and 16 dry type electrode 1-16 that are fixed on the elastic substrate 20.In actual use, the elastic substrate 20 that can be used for obtaining the electrod-array worn of extremity surface electromyogram signal of the present invention is tubular, and namely the left and right both sides of elastic substrate 20 shown in Figure 1 connect together.Such 16 dry type electrode 1-16 have formed two electrode retaining collars around elastic substrate 20 in the elastic substrate 20 of tubular.Wherein, dry type electrode 1-8 has formed an electrode retaining collar, and dry type electrode 9-16 has formed another electrode retaining collar.Need to prove, in other embodiments of the invention, can use the dry type electrode of other numbers, and these dry type electrodes can be in one of the elastic substrate formation of tubular or more than two electrode retaining collars around elastic substrate.
Fig. 2 and 3 has shown that respectively use in the present embodiment of the present invention can be used for obtaining the front and back of dry type electrode 1 of the electrod-array worn of extremity surface electromyogram signal, wherein the front of dry type electrode 1 is in order to contact with the limbs surface, and its back side is used for being connected with electrode cable.
The dry type electrode 1-16 that uses in the present embodiment obtains by repacking Ag/AgCl wet type electrode, and the concrete steps of repacking are as follows:
1, selects Ag/AgCl wet type electrode for use;
2, remove conducting resinl on each Ag/AgCl wet type electrode, particularly, can use soft cloth wiping to be attached to conductive rubber on the Ag/AgCL material of each Ag/AgCl wet type electrode;
3, remove stickup sponge on it along the outer rim of the metal of each Ag/AgCl wet type electrode part, particularly, can use shears will paste sponge along the outer rim of the part of the circular metal in each Ag/AgCl wet type electrode and cut off, only keep the hard solid that has metal-like in each Ag/AgCl wet type electrode.
Dry type electrode 1-16 is arranged in the mode shown in Fig. 1 and is fixed on the elastic substrate 20, and wherein dry type electrode 1-16 is distributed in the inner surface of the elastic substrate 20 of cartridge type, and each bossing at the back side of dry type electrode 1-16 passes the elastic substrate 20 of cartridge type.The arrangement of dry type electrode 1-16 meets: in an electrode retaining collar, any two interelectrode distances of adjacent dry type are all equal.Namely as shown in Figure 1, in the electrode retaining collar that is formed by dry type electrode 1-8, the distance between the distance between dry type electrode 1 and the dry type electrode 2, dry type electrode 2 and the dry type electrode 3 ..., the distance between dry type electrode 7 and the dry type electrode 8 and dry type electrode 9 all equate with distance between the dry type electrode 1; In the electrode retaining collar that is formed by dry type electrode 9-16, the distance between the distance between dry type electrode 9 and the dry type electrode 10, dry type electrode 10 and the dry type electrode 11 ..., the distance between dry type electrode 15 and the dry type electrode 16 and dry type electrode 16 all equate with distance between the dry type electrode 9.Need to prove that in the present embodiment, the number of the dry type electrode in two electrode retaining collars is identical, all be 8, but in other embodiment, the number of the dry type electrode in the different electrode retaining collars can be inequality.In addition, in the present embodiment, adjacent two dry type distance between electrodes in two electrode retaining collars are identical, for example the distance between dry type electrode 1 and the dry type electrode 2 equals the distance between dry type electrode 9 and the dry type electrode 10, but in other embodiment, adjacent two dry type distance between electrodes in the different electrode retaining collars can be inequality, and for example adjacent two the dry type distance between electrodes in electrode retaining collar are greater than adjacent two the dry type distance between electrodes in another electrode retaining collar.
Figure 4 and 5 have shown that worn of the present invention can be used for obtaining the back side and the front of upper limb of the electrod-array worn of extremity surface electromyogram signal, as can be seen from the figure, wear the elastic substrate 20 that can be used for obtaining the electrod-array worn of extremity surface electromyogram signal human upper limb of the present invention and strutted by limbs, and the restoring force of elastic substrate 20 will make each the applying limbs surface, front among the dry type electrode 1-16 that is distributed in its inner surface.The bossing at the back side of each among the dry type electrode 1-16 all passes the elastic substrate 20 of cartridge type to engage with the snap-fastener parent of electrode cable respectively.One end of electrode cable is the snap-fastener parent, and the other end is electrode plug, and it is not given unnecessary details at this for this area button electrode wires commonly used.The snap-fastener parent engages in the mode of pressing with the bossing at the back side of Ag/AgCl wet type electrode, and the mode that can peel off is removed joint between the two; Electrode plug is connected with the input of electromyographic signal collection system, like this, electrode cable can easily Ag/AgCl wet type electrode be connected to the electromyographic signal collection system or remove its with the electromyographic signal collection system between be connected.Because the dry type electrode that can be used for obtaining the electrod-array worn of extremity surface electromyogram signal of the present invention is obtained by the repacking of Ag/AgCl wet type electrode, its back side has kept the bossing at the back side of Ag/AgCl wet type electrode, so the bossing at each back side among the dry type electrode 1-16 all passes the elastic substrate 20 of cartridge type to be drawn out to the electromyographic signal collection system with the bioelectric potential that the snap-fastener parent of 16 electrode cables engages so that the front of corresponding dry type electrode is absorbed respectively.
The elastic substrate 20 that the bossing at the back side of dry type electrode 1-16 is passed cartridge type is included in the step on the elastic substrate 20 that in the present embodiment dry type electrode 1-16 is fixed on cartridge type, concrete fixing step is: the surface in the elastic substrate 20 of cartridge type makes marks, and treats the fixedly position of dry type electrode 1-16 to demarcate respectively; Respectively each the bossing at the back side among the dry type electrode 1-16 is aimed at the labelling on the elastic substrate 20 of cartridge type, and the elastic substrate 20 of passing cartridge type from the inner surface of the elastic substrate 20 of cartridge type in this position is with the outer surface of the elastic substrate 20 that is exposed to cartridge type; Respectively each the bossing at the back side among the snap-fastener parent of 16 electrode cables and the dry type electrode 1-16 is engaged.
Using of the present inventionly when can be used for obtaining the electrod-array worn of extremity surface electromyogram signal, between any two the adjacent dry type electrodes in electrode retaining collar, will in the skin of the top layer of limbs, form a myoelectricity passage.In the present embodiment, in the electrode retaining collar that is formed by dry type electrode 1-8, between dry type electrode 1 and the dry type electrode 2, between dry type electrode 2 and the dry type electrode 3 ..., between dry type electrode 7 and the dry type electrode 8 and form a myoelectricity passage respectively between dry type electrode 9 and the dry type electrode 1; In the electrode retaining collar that is formed by dry type electrode 9-16, between dry type electrode 9 and the dry type electrode 10, between dry type electrode 10 and the dry type electrode 11 ..., between dry type electrode 15 and the dry type electrode 16 and form a myoelectricity passage respectively between dry type electrode 16 and the dry type electrode 9.Therefore, in the present embodiment, the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention can form 16 myoelectricity passages in use.And, owing to usually can think, the myoelectricity passage is in the skin of top layer and the current flow path of the straight line between the contact point of two electrodes, therefore, as can be seen from Figure 1, the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention in use each myoelectricity passage of producing of each electrode retaining collar arrange for being zigzag.
In addition, in order to guarantee in actual use, each dry type electrode that can be used for obtaining the electrod-array worn of extremity surface electromyogram signal of the present invention contacts with the tight of skin, the elastic substrate of the cartridge type of the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal of the present invention is being worn after on the limbs of needs test, can also outside this elastic substrate, wear the elastic substrate of one deck cartridge type more.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variations.Therefore, all those skilled in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (8)
1. electrod-array worn that can be used for obtaining the extremity surface electromyogram signal, it is characterized in that, comprise elastic substrate and a plurality of dry type electrodes that are used for contacting with described limbs surface be used to the cartridge type that is worn on limbs, described a plurality of dry type electrode is fixed on the described elastic substrate and forms at least one around the electrode retaining collar of described elastic substrate, and each described dry type electrode is all drawn by electrode cable;
In described electrode retaining collar, any two adjacent interelectrode distances of described dry type are all equal;
Between any two adjacent described dry type electrodes in the described electrode retaining collar, form a myoelectricity passage in the skin of the top layer of described limbs, described each myoelectricity passage is in a zigzag arranges.
2. the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal as claimed in claim 1, wherein said dry type electrode is obtained by the repacking of Ag/AgCl wet type electrode, and described repacking comprises step:
Remove the conducting resinl on the described Ag/AgCl wet type electrode;
Remove stickup sponge on the described Ag/AgCl wet type electrode along the outer rim of the metal of described Ag/AgCl wet type electrode part.
3. the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal as claimed in claim 1 or 2, wherein said limbs comprise upper limb and the lower limb of human body.
4. the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal as claimed in claim 3 comprises equally distributed elastic fiber in the wherein said elastic substrate.
5. the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal as claimed in claim 4, the material of wherein said elastic substrate is elastic fiber cloth.
6. as claim 4 or the 5 described electrod-arrays worn that can be used for obtaining the extremity surface electromyogram signal, wherein said elastic fiber comprises genuine milk collodion silk and/or multi-block polyurethane fiber.
7. the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal as claimed in claim 6, wherein said a plurality of dry type electrode retaining collar forms two or more described electrode retaining collars around described elastic substrate, and the number of the described dry type electrode in the different described electrode retaining collars is identical or different.
8. the electrod-array worn that can be used for obtaining the extremity surface electromyogram signal as claimed in claim 7, wherein two described dry type distance between electrodes in the different described electrode retaining collar are identical or different.
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Cited By (5)
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| CN103860298A (en) * | 2014-03-31 | 2014-06-18 | 北京大学 | Non-contact capacitance sensing system for intelligent artificial limb |
| CN103948388A (en) * | 2014-04-23 | 2014-07-30 | 深圳先进技术研究院 | Myoelectricity collecting device |
| CN107822629A (en) * | 2017-09-11 | 2018-03-23 | 上海傲意信息科技有限公司 | The detection method of extremity surface myoelectricity axle |
| CN110353677A (en) * | 2018-04-11 | 2019-10-22 | 上海傲意信息科技有限公司 | A kind of biopotential sensor and prosthetic socket |
| WO2022253926A1 (en) * | 2021-06-03 | 2022-12-08 | Stb Inn Ab | Electromyography system for medical use |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103948388B (en) * | 2014-04-23 | 2018-10-30 | 深圳先进技术研究院 | A kind of myoelectricity acquisition device |
| CN107822629A (en) * | 2017-09-11 | 2018-03-23 | 上海傲意信息科技有限公司 | The detection method of extremity surface myoelectricity axle |
| CN107822629B (en) * | 2017-09-11 | 2020-09-11 | 上海傲意信息科技有限公司 | Method for detecting myoelectric axes on surfaces of limbs |
| CN110353677A (en) * | 2018-04-11 | 2019-10-22 | 上海傲意信息科技有限公司 | A kind of biopotential sensor and prosthetic socket |
| WO2022253926A1 (en) * | 2021-06-03 | 2022-12-08 | Stb Inn Ab | Electromyography system for medical use |
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