CN103230271B - 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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- CN103230271B CN103230271B CN201310164855.3A CN201310164855A CN103230271B CN 103230271 B CN103230271 B CN 103230271B CN 201310164855 A CN201310164855 A CN 201310164855A CN 103230271 B CN103230271 B CN 103230271B
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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, particularly relate to a kind of electrod-array worn that can be used for obtaining extremity surface electromyographic signal.
Background technology
Carrying out electrical detection to the physiological signal of human body or animal body is one of current clinical conventional inspection method, and the various bioelectric potentials generally absorbing human body or animal body by electrode detect.The signal of telecommunication adjoint when electromyographic signal is muscle contraction, the electromyographic signal measuring human body surveys the important method of musculation.Further, electromyographic signal can be applicable to the Detection and diagnosis of the sacred disease that muscle is correlated with, and also can be used as a kind of man-machine interface 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 acquisition.Wherein, intrusive mood electromyographic signal collection needs to be needled into muscle inside with two usually, and is connected with electromyographic signal collection system with electrode cable, observes electromyographic signal feature, evaluates patient's state of an illness.And surface electromyogram signal acquisition only needs electrode to be affixed on muscle surface, the activity of muscle namely can be observed in the same way.Because the latter does not exist pain, more welcome.The present invention relates to for the latter, multichannel ground collection surface electromyographic signal, and for the control of artificial limb.
Current clinical assays bioelectric potential adopts the disposable electrode of the wet type of such as rosette electrode mostly, reduces contact impedance between these electrode and skins by conductive paste or normal saline and contact skin.But, because skin wet type electrode is easily because mobile generation motion artifact, therefore cause the uncertain shortcoming of the electrode position of skin surface, in addition, the few and Equipments Setting time length of myoelectricity number of channels is also the shortcoming of this kind of 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 the corrosion of skin and stimulation.But current skin dry-type electrode mostly is and adopts semiconducter process to make on silicon chip, processing technique is complicated and cost is higher.
Therefore, those skilled in the art is devoted to develop a kind of electrod-array worn that can be used for obtaining extremity surface electromyographic signal, and it is suitable for being worn on human limb, make simple and between its electrode position relatively stable, reusable.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of electrod-array worn that can be used for obtaining extremity surface electromyographic signal, is become be fixed on elastic substrate in array and realize by repacking wet type electrode.
For achieving the above object, the invention provides a kind of electrod-array worn that can be used for obtaining extremity surface electromyographic signal, it is characterized in that, comprise the cartridge type for being worn on limbs elastic substrate and for the multiple dry-type electrodes with described limbs surface contact, described multiple dry-type electrode to be fixed in described elastic substrate and to form at least one electrode retaining collar around described elastic substrate, and described in each, dry-type electrode is all drawn by electrode cable;
In described electrode retaining collar, the distance between any two adjacent described dry-type electrodes is all equal;
Between any two adjacent described dry-type electrodes in described electrode retaining collar, in the superficial skin of described limbs, form a myoelectricity passage, each myoelectricity passage described is in arrangement in a zigzag.
Further, described dry-type electrode is reequiped by Ag/AgCl wet type electrode and is obtained, and described repacking comprises step:
Remove the conducting resinl on described Ag/AgCl wet type electrode;
Outer rim along the metallic member of described Ag/AgCl wet type electrode removes the stickup sponge on described Ag/AgCl wet type electrode.
Further, wherein said limbs comprise upper limb and the lower limb of human body.
Further, equally distributed elastic fiber is comprised in 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 multiple dry-type electrode forms electrode retaining collar described in two or more around described elastic substrate, and the number of the described dry-type electrode in different described electrode retaining collars is identical or different.
Further, the distance between two described dry-type electrodes in different described electrode retaining collars is identical or different.
In better embodiment of the present invention, provide a kind of electrod-array worn that can be used for obtaining extremity surface electromyographic signal, it comprises elastic substrate and 16 dry-type electrodes be fixed in this elastic substrate of cartridge type.The elastic substrate of cartridge type is for wearing the limbs in comprising human upper limb and lower limb, and the material that elastic substrate comprises equally distributed elastic fiber by inside makes, and it can applied elongation reinstatement after removing active force.16 dry-type electrodes for being obtained by the repacking of repacking Ag/AgCl wet type electrode, wherein dry-type electrode front in order to limbs surface contact, the back side is connected with electromyographic signal collection system and draws with the bioelectric potential that will absorb.Each dry-type electrode is distributed in the inner surface of the elastic substrate of cartridge type, and the bossing on the back side of each dry-type electrode engages with the snap-fastener parent of the electrode cable being connected to electromyographic signal collection system respectively through the elastic substrate of cartridge type.16 dry-type electrodes define two electrode retaining collars around elastic substrate in the elastic substrate of tubular, and the arrangement of each dry-type electrode meets: in an electrode retaining collar, and the distance between any two adjacent dry-type electrodes is all equal.Use of the present invention when can be used for the electrod-array worn obtaining extremity surface electromyographic signal, its elastic substrate is worn on limbs to be measured.Elastic substrate is strutted by limbs, and its restoring force will make the laminating limbs surface, front being distributed in each in the dry-type electrode of its inner surface.Between any two adjacent dry-type electrodes in each electrode retaining collar, in the superficial skin of limbs, form a myoelectricity passage.The electrod-array worn each myoelectricity passage that each electrode retaining collar produces in use that can be used for obtaining extremity surface electromyographic signal of the present invention is in arrangement in a zigzag.
As can be seen here, the electrod-array worn that can be used for obtaining extremity surface electromyographic signal of the present invention adopts elastic substrate to fix each dry-type electrode, can wear quickly and easily, thus reduce the time of test, and although the limbs thickness of different tested object is different, the distance be worn between each dry-type electrode that can be used for the electrod-array worn obtaining extremity surface electromyographic signal of the present invention on the limbs of different thicknesses can not be identical, but for the limbs of same tested object, due to the even extensibility of elastic substrate, distance between each dry-type electrode can be consistent, and the restoring force of elastic substrate is not shifted effectively ensureing with each dry-type electrode of limbs surface contact, therefore this being designed with of the present invention helps simplify later stage electromyographic signal intractability, improve 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 object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the expansion schematic diagram that can be used for the electrod-array worn obtaining extremity surface electromyographic signal of the present invention.
Fig. 2 shows the front that can be used for the dry-type electrode of the electrod-array worn obtaining extremity surface electromyographic signal of the present invention obtained by repacking Ag/AgCl wet type electrode.
Fig. 3 shows the back side that can be used for the dry-type electrode of the electrod-array worn obtaining extremity surface electromyographic signal of the present invention obtained by repacking Ag/AgCl wet type electrode.
Fig. 4 shows the back side that can be used for the upper limb of the electrod-array worn obtaining extremity surface electromyographic signal of the present invention of having worn.
Fig. 5 shows the front that can be used for the upper limb of the electrod-array worn obtaining extremity surface electromyographic signal of the present invention of having worn.
Detailed description of the invention
Fig. 1 is in a preferred embodiment, and the electrod-array worn that can be used for obtaining extremity surface electromyographic signal of the present invention launches schematic diagram.As shown in Figure 1, in the present embodiment, the electrod-array worn that can be used for obtaining extremity surface electromyographic signal of the present invention comprises elastic substrate 20 and 16 dry-type electrode 1-16 be fixed in elastic substrate 20.In actual use, the elastic substrate 20 that can be used for the electrod-array worn obtaining extremity surface electromyographic signal of the present invention is tubular, and the left and right both sides of the elastic substrate 20 namely shown in Fig. 1 connect together.Such 16 dry-type electrode 1-16 define two electrode retaining collars around elastic substrate 20 in the elastic substrate 20 of tubular.Wherein, dry-type electrode 1-8 defines an electrode retaining collar, and dry-type electrode 9-16 defines another electrode retaining collar.It should be noted that, in other embodiments of the invention, the dry-type electrode of other numbers can be used, and these dry-type electrodes can form one or more than two electrode retaining collars around elastic substrate in the elastic substrate of tubular.
Elastic substrate 20 has elasticity, and when the effect being subject to tensile force, elastic substrate 20 will be evenly stretched elongation at Impact direction, and after removing this tensile force, elastic substrate 20 is by its original shape of reply.The material that inside can be used to comprise equally distributed elastic fiber makes elastic substrate 20, such as elastic fiber cloth.Elastic fiber and elastomeric fibre (elastomeric fibre), it is for having the synthetic fibers of high extension at break (more than 400%), low modulus and elastic recovery rate, such as genuine milk collodion silk, multi-block polyurethane fiber etc.The elastic substrate 20 of cartridge type is for wearing the limbs in comprising human upper limb and lower limb.
Fig. 2 and 3 respectively illustrates the front and back that can be used for the dry-type electrode 1 of the electrod-array worn obtaining extremity surface electromyographic signal of the present invention used in the present embodiment, wherein dry-type electrode 1 front in order to limbs surface contact, its back side be used for be connected with electrode cable.
The dry-type electrode 1-16 used in the present embodiment is for obtaining by repacking Ag/AgCl wet type electrode, and the concrete steps of repacking are as follows:
1, Ag/AgCl wet type electrode is selected;
2, remove the conducting resinl on each Ag/AgCl wet type electrode, particularly, soft cloth wiping can be used to be attached to conductive rubber on the Ag/AgCL material of each Ag/AgCl wet type electrode;
3, the stickup sponge on it is removed along the outer rim of the metallic member of each Ag/AgCl wet type electrode, particularly, shears can be used to be cut off by stickup sponge along the outer rim of the circular metal part in each Ag/AgCl wet type electrode, only retain the rigid solid in each Ag/AgCl wet type electrode with metal-like.
Dry-type electrode 1-16 is arranged in the mode shown in Fig. 1 and is fixed in 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, and the distance between any two adjacent dry-type electrodes is all equal.Namely as shown in Figure 1, in the electrode retaining collar formed by dry-type electrode 1-8, the distance between dry-type electrode 1 and dry-type electrode 2, between dry-type electrode 2 and dry-type electrode 3 distance ..., the distance between dry-type electrode 7 with dry-type electrode 8 and the distance between dry-type electrode 9 with dry-type electrode 1 all equal; In the electrode retaining collar formed by dry-type electrode 9-16, the distance between dry-type electrode 9 and dry-type electrode 10, between dry-type electrode 10 and dry-type electrode 11 distance ..., the distance between dry-type electrode 15 with dry-type electrode 16 and the distance between dry-type electrode 16 with dry-type electrode 9 all equal.It should be noted that, in the present embodiment, the number of the dry-type electrode in two electrode retaining collars is identical, is all 8, but in other examples, the number of the dry-type electrode in different electrode retaining collars can not be identical.In addition, in the present embodiment, distance between adjacent two dry-type electrodes in two electrode retaining collars is identical, distance such as between dry-type electrode 1 and dry-type electrode 2 equals the distance between dry-type electrode 9 and dry-type electrode 10, but in other examples, distance between adjacent two dry-type electrodes in different electrode retaining collars can not be identical, and the distance between such as, adjacent two dry-type electrodes in an electrode retaining collar is greater than the distance between adjacent two dry-type electrodes in another electrode retaining collar.
Figure 4 and 5 show the back side and the front that can be used for the upper limb of the electrod-array worn obtaining extremity surface electromyographic signal of the present invention of having worn, as can be seen from the figure, wear and strutted by limbs in the elastic substrate 20 that can be used for the electrod-array worn obtaining extremity surface electromyographic signal of the present invention of human upper limb, and the restoring force of elastic substrate 20 will make the laminating limbs surface, front being distributed in each in the dry-type electrode 1-16 of its inner surface.The bossing at the back side of each in 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 snap-fastener parent, and the other end is electrode plug, its button electrode wires commonly used for this area, is not repeated herein.Snap-fastener parent engages in the mode pressed with the bossing at the back side of Ag/AgCl wet type electrode, and the mode that can peel off removes joint between the two; Electrode plug is connected with the input of electromyographic signal collection system, like this, electrode cable can easily by Ag/AgCl wet type Electrode connection to electromyographic signal collection system or the connection removed between itself and electromyographic signal collection system.Because the dry-type electrode that can be used for the electrod-array worn obtaining extremity surface electromyographic signal of the present invention is obtained by the repacking of Ag/AgCl wet type electrode, its back side remains the bossing at the back side of Ag/AgCl wet type electrode, and the bossing at each back side therefore in dry-type electrode 1-16 is all drawn out to electromyographic signal collection system to engage with the snap-fastener parent of 16 electrode cables respectively with the bioelectric potential absorbed in the front of corresponding dry-type electrode through the elastic substrate 20 of cartridge type.
The elastic substrate 20 of the bossing at the back side of dry-type electrode 1-16 being passed cartridge type is included in the present embodiment and is fixed in the step in the elastic substrate 20 of cartridge type by dry-type electrode 1-16, concrete fixing step is: make marks on the surface of the elastic substrate 20 of cartridge type, to demarcate the position of dry-type electrode 1-16 to be fixed respectively; Respectively the bossing at the back side of each in dry-type electrode 1-16 is aimed at the labelling in the elastic substrate 20 of cartridge type, and pass the elastic substrate 20 of cartridge type to be exposed to the outer surface of the elastic substrate 20 of cartridge type in this position from the inner surface of the elastic substrate 20 of cartridge type; Respectively the snap-fastener parent of 16 electrode cables is engaged with the bossing at the back side of each in dry-type electrode 1-16.
Use of the present invention can be used for the electrod-array worn obtaining extremity surface electromyographic signal time, between any two the adjacent dry-type electrodes in an electrode retaining collar, form a myoelectricity passage by the superficial skin of limbs.In the present embodiment, in the electrode retaining collar formed by dry-type electrode 1-8, between dry-type electrode 1 and dry-type electrode 2, between dry-type electrode 2 and dry-type electrode 3 ..., form a myoelectricity passage respectively between dry-type electrode 7 and dry-type electrode 8 and between dry-type electrode 9 and dry-type electrode 1; In the electrode retaining collar formed by dry-type electrode 9-16, between dry-type electrode 9 and dry-type electrode 10, between dry-type electrode 10 and dry-type electrode 11 ..., form a myoelectricity passage respectively between dry-type electrode 15 and dry-type electrode 16 and between dry-type electrode 16 and dry-type electrode 9.Therefore, in the present embodiment, the electrod-array worn that can be used for obtaining extremity surface electromyographic signal of the present invention can form 16 myoelectricity passages in use.And, owing to usually can think, myoelectricity passage is the current flow path of the straight line in superficial skin and between the contact point of two electrodes, therefore, as can be seen from Figure 1, the electrod-array worn each myoelectricity passage that each electrode retaining collar produces in use that can be used for obtaining extremity surface electromyographic signal of the present invention is in arrangement in a zigzag.
In addition, in order to ensure in actual use, each dry-type electrode of the electrod-array worn and the close contact of skin that can be used for acquisition extremity surface electromyographic signal of the present invention, the elastic substrate that can be used for the cartridge type of the electrod-array worn obtaining extremity surface electromyographic signal of the present invention is being worn after on the limbs of needs test, can also in this elastic substrate elastic substrate wearing one deck cartridge type outward more.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all those skilled in the art, all should by the determined protection domain of 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. one kind can be used for the electrod-array worn obtaining extremity surface electromyographic signal, it is characterized in that, comprise the cartridge type for being worn on limbs elastic substrate and for the multiple dry-type electrodes with described limbs surface contact, described multiple dry-type electrode is distributed in the inner surface of the elastic substrate of described cartridge type, bossing on the back side of described multiple dry-type electrode engages with the snap-fastener parent of the electrode cable being connected to electromyographic signal collection system respectively through the elastic substrate of described cartridge type, and form at least one electrode retaining collar around described elastic substrate, described in each, dry-type electrode is all drawn by electrode cable,
In described electrode retaining collar, the distance between any two adjacent described dry-type electrodes is all equal;
Between any two adjacent described dry-type electrodes in described electrode retaining collar, in the superficial skin of described limbs, form a myoelectricity passage, each myoelectricity passage described is in arrangement in a zigzag.
2. can be used for the electrod-array worn obtaining extremity surface electromyographic signal as claimed in claim 1, wherein said dry-type electrode is reequiped by Ag/AgCl wet type electrode and is obtained, and described repacking comprises step:
Remove the conducting resinl on described Ag/AgCl wet type electrode;
Outer rim along the metallic member of described Ag/AgCl wet type electrode removes the stickup sponge on described Ag/AgCl wet type electrode.
3. can be used for the electrod-array worn obtaining extremity surface electromyographic signal as claimed in claim 1 or 2, wherein said limbs comprise upper limb and the lower limb of human body.
4. can be used for the electrod-array worn obtaining extremity surface electromyographic signal as claimed in claim 3, in wherein said elastic substrate, comprise equally distributed elastic fiber.
5. can be used for the electrod-array worn obtaining extremity surface electromyographic signal as claimed in claim 4, the material of wherein said elastic substrate is elastic fiber cloth.
6. the electrod-array worn can be used for acquisition extremity surface electromyographic signal as described in claim 4 or 5, wherein said elastic fiber comprises genuine milk collodion silk and/or multi-block polyurethane fiber.
7. can be used for the electrod-array worn obtaining extremity surface electromyographic signal as claimed in claim 6, wherein said multiple dry-type electrode forms electrode retaining collar described in two or more around described elastic substrate, and the number of the described dry-type electrode in different described electrode retaining collars is identical or different.
8. can be used for the electrod-array worn obtaining extremity surface electromyographic signal as claimed in claim 7, the distance between two described dry-type electrodes in wherein different described electrode retaining collars is identical or different.
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| CN201310164855.3A CN103230271B (en) | 2013-05-07 | 2013-05-07 | Wearable electrode array capable of being used for obtaining myoelectric signals of surfaces of arms and legs |
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| CN201310164855.3A CN103230271B (en) | 2013-05-07 | 2013-05-07 | Wearable electrode array capable of being used for obtaining myoelectric signals of surfaces of arms and legs |
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| CN103230271B true CN103230271B (en) | 2015-07-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103860298B (en) * | 2014-03-31 | 2015-08-19 | 北京大学 | A kind of non-contact capacitance sensor-based system for intelligent artificial limb |
| CN103948388B (en) * | 2014-04-23 | 2018-10-30 | 深圳先进技术研究院 | A kind of myoelectricity acquisition device |
| 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 |
| GB202107978D0 (en) * | 2021-06-03 | 2021-07-21 | Stb Inn Ab | Electromyography system for medical use |
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