JP2015073623A - Bioelectrode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bioelectrode capable of reducing a material loss compared with that formed by integrally producing a body part and a lead part.SOLUTION: A bioelectrode comprises a body part 10 and a lead part 20. The body part 10 includes a substrate 1 such as a resin film, and a silver-silver chloride 6 provided on the substrate 1. The lead part 20 includes a substrate 21 such as a resin film, and a silver-silver chloride 26 provided on the substrate 21. The body part 10 and the lead part 20 are independently produced, and mutually fixed in a partially overlapped state. In the overlapped part, the silvers-silver chlorides 6 and 26 are mutually electrically connected.

Description

  The present invention relates to a biological electrode for acquiring a biological signal.

  In order to acquire a biological signal typified by an electrocardiogram, a biological electrode is used (Patent Document 1 below). In general, the biological electrode includes a main body portion attached to a human body and a lead portion for leading a biological signal from the main body portion to the outside. A substrate having a conductive pattern printed on a substrate such as a resin film may be used in common for the main body and the lead.

JP 2007-44208 A

  The main body portion of the bioelectrode is wider than the lead portion due to a relationship such as securing a bonding area with the human body. For this reason, when a main-body part and a lead part are manufactured with an integral base material, the problem that material loss will become large arises. FIG. 15 is an explanatory diagram of material loss when the main body portion and the lead portion are manufactured from an integral base material. In FIG. 15, hatching indicates a part used as a bioelectrode, and the other part is a material loss.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a bioelectrode capable of reducing material loss as compared with a case where a main body portion and a lead portion are integrally manufactured. is there.

One embodiment of the present invention is a bioelectrode. This bioelectrode
A main body unit that is attached to a human body and obtains a biological signal;
A lead portion for leading the biological signal from the main body portion to the outside,
Each of the main body portion and the lead portion has a base material and a conductive pattern formed on the base material,
The main body portion and the lead portion are fixed to each other in a state where the conductive pattern of the main body portion and the conductive pattern of the lead portion are electrically connected to each other.

  The main body portion and the lead portion partially overlap, and the conductive pattern of the main body portion and the conductive pattern of the lead portion face each other and are electrically connected to each other at the overlapped portion. The main body portion and the lead portion may be fixed to each other.

  The base material of the main body part and the base material of the lead part may be welded to each other.

  The main body portion and the lead portion may be fixed to each other by a fastener.

  The conductive pattern of the main body part and the conductive pattern of the lead part may be in direct contact with each other.

  The conductive pattern of the main body part and the conductive pattern of the lead part may be indirectly connected to each other.

  The conductive pattern of the main body portion and the conductive pattern of the lead portion may be electrically connected to each other and fixed to each other by a conductive tape.

  The conductive pattern of the main body portion and the conductive pattern of the lead portion may be electrically connected to each other by solder bonding and fixed to each other.

  The main body has the conductive pattern on the human body side surface of the base material, and is provided on the human body side surface of the base material, and a conductive layer provided on the anti-human body side surface of the base material. And a conductive gel that is electrically connected to the conductive pattern, and a ground gel that is provided at a position different from the conductive gel on the human body side surface of the substrate and is electrically connected to the human body.

  A plurality of the earth gels may be provided so as to sandwich the conductive gel.

  The conductive layer and the earth gel may be electrically connected to each other.

  The conductive layer and the earth gel may be electrically connected to each other through a hole provided in the base material.

  The conductive layer and the earth gel may be electrically connected to each other by folding the base material.

  The main body may have a waterproof member on the surface of the base material on the side opposite to the human body.

  The earth gel may be an adhesive gel.

  The lead portion may have a nonwoven fabric on at least one side of the human body side and the anti-human body side of the base material.

  The nonwoven fabric may be subjected to antistatic treatment.

  The biological electrode may be made of a material that transmits X-rays.

  It should be noted that any combination of the above-described constituent elements, and those obtained by converting the expression of the present invention between methods and systems are also effective as aspects of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the bioelectrode which can reduce material loss compared with what manufactured the main-body part and the lead part integrally can be provided.

The principal part expansion perspective view seen from the anti-human body side in the state which decomposed | disassembled the main-body part 10 and the lead part 20 of the bioelectrode which concerns on Embodiment 1 of this invention. The principal part expansion perspective view seen from the anti-human body side in the state which fixed the main-body part 10 and the lead part 20 of the bioelectrode. The principal part expansion perspective view seen from the human body side in the state which decomposed | disassembled the main-body part 10 and the lead part 20 of the bioelectrode. The principal part expansion perspective view seen from the human body side in the state which fixed the main-body part 10 and the lead part 20 of the bioelectrode. The whole perspective view seen from the anti-human body side of the same bioelectrode. The perspective view seen from the anti-human body side which expanded the front-end | tip part of the lead part 20 of the same bioelectrode. Sectional drawing of the longitudinal direction containing the conductive gel 9 of the main-body part 10 of the bioelectrode. Sectional drawing of the longitudinal direction containing the earth gel 5 of the main-body part 10 of the bioelectrode. Sectional drawing of the transversal direction of the main-body part 10 of the bioelectrode. FIG. 3 is a cross-sectional view in the longitudinal direction of the bioelectrode in a state where a main body portion 10 and a lead portion 20 are joined to each other by a joining member 30. Sectional drawing of the longitudinal direction in the state which made the bioelectric electrode the conductive patterns of the main-body part 10 and the lead part 20 contact each other directly. FIG. 12 is a longitudinal sectional view of the bioelectrode in which the main body 10 and the lead 20 are fixed to each other with a fastener in FIG. 11. Sectional drawing of the transversal direction of the main-body part 10 of the bioelectrode which concerns on Embodiment 2 of this invention. The principal part expansion perspective view seen from the anti-human body side in the state which decomposed | disassembled the main-body part 10 and the lead part 20 of the bioelectrode which concerns on Embodiment 3 of this invention. Explanatory drawing of the material loss in the case of manufacturing a main-body part and a lead part with an integral base material.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

Embodiment 1
FIG. 1 is an enlarged perspective view of a main part of a bioelectrode according to Embodiment 1 of the present invention as viewed from the side of the human body in a state where the main body 10 and the lead 20 are disassembled. FIG. 2 is an enlarged perspective view of a main part of the biomedical electrode as seen from the anti-human body side in a state where the main body part 10 and the lead part 20 are fixed to each other. FIG. 3 is an enlarged perspective view of a main part of the bioelectrode as seen from the human body side in a state in which the main body 10 and the lead part 20 are disassembled. FIG. 4 is an enlarged perspective view of a main part of the biomedical electrode viewed from the human body side in a state where the main body part 10 and the lead part 20 are fixed to each other. FIG. 5 is an overall perspective view of the biomedical electrode as viewed from the side opposite the human body. FIG. 6 is a perspective view of the lead portion 20 of the bioelectrode as seen from the side of the human body with the distal end portion enlarged. FIG. 7 is a longitudinal sectional view including the conductive gel 9 of the body portion 10 of the bioelectrode. FIG. 8 is a longitudinal sectional view including the earth gel 5 of the body portion 10 of the bioelectrode. FIG. 9 is a cross-sectional view of the body portion 10 of the bioelectrode in the short direction. FIG. 10 is a longitudinal sectional view of the bioelectrode in a state where the main body 10 and the lead 20 are joined to each other by the joining member 30. FIG. 11 is a longitudinal sectional view of the bioelectrode in a state where the conductive patterns of the main body 10 and the lead 20 are in direct contact with each other. FIG. 12 is a cross-sectional view in the longitudinal direction of the bioelectrode in which the main body portion 10 and the lead portion 20 in FIG. 11 are fixed to each other with a fastener.

  The bioelectrode of the present embodiment includes a main body portion 10 and a lead portion 20. Both the main body 10 and the lead 20 are made of a material that transmits X-rays. The main body 10 is a part that is attached to a human body and acquires a biological signal. The lead part 20 is a part for leading the biological signal from the main body part 10 to the outside. The leading end portion of the lead portion 20 is connected to an external measuring device (not shown) by being sandwiched between clips. The main body 10 includes a base material 1, a conductive layer 1 </ b> A, a nonwoven fabric 2, a ground gel 5, silver-silver chloride 6 as a conductive pattern, and a conductive gel 9.

  The substrate 1 is a resin film such as a PET film or a PP film (PET: polyethylene terephthalate, PP: polypropylene). The nonwoven fabric 2 is, for example, a PP nonwoven fabric. The nonwoven fabric 2 is preferably subjected to antistatic treatment, for example, impregnated or coated with any of a surfactant, a humectant, a hydrophilic agent, and a conductive agent. The earth gel 5 and the conductive gel 9 are adhesive conductive gels.

  A conductive layer 1 </ b> A is provided on the entire surface of the substrate 1 on the side opposite to the human body by printing or the like. A non-woven fabric 2 is provided on the surface of the substrate 1 on the side opposite to the human body so as to cover the conductive layer 1A. Silver-silver chloride 6 is provided on the surface of the substrate 1 on the human body side by printing or the like. A conductive gel 9 is provided on the surface of the substrate 1 on the human body side so as to cover the silver-silver chloride 6 except for an overlapping portion with a lead portion 20 described later. The biological signal is transmitted from the conductive gel 9 attached to the human body to the silver-silver chloride 6. A ground gel 5 is provided on the human body side surface of the substrate 1 at a position different from the conductive gel 9. The earth gel 5 is provided at two places on the left and right sides, with the conductive gel 9 sandwiched therebetween (the two earth gels 5 are in contact with the human body at different positions). The earth gel 5 and the conductive gel 9 are not in contact with each other and are electrically insulated. The ground gel 5 is electrically connected to the conductive layer 1 </ b> A through the through hole 13. A plurality of through holes 13 are preferably provided. The through-hole 13 is opened by a large number of needle-shaped or blade-shaped molds, and the conductive layer 1 </ b> A of the base material 1 is embedded in the ground gel 5 by a burr or burring shape to conduct with the ground gel 5. In this case, by making the shape of the needle or blade easy to hold the ground gel 5, the ground gel 5 can be pulled up to the conductive layer 1 </ b> A of the substrate 1 to be conducted. The mold needle or blade is inserted at least until it reaches the earth gel 5. In addition, the base material 1 may be perforated before the earth gel 5 is attached, and the base material 1 and the earth gel 5 only need to be electrically connected after bonding. The earth gel 5 is affixed to the human body and has the same potential as the human body. The conductive layer 1A that conducts with the earth gel 5 also has the same potential as the human body.

  The lead portion 20 includes a base material 21, a conductive layer 21A, nonwoven fabrics 22A and 22B, and silver-silver chloride 26 as a conductive pattern. The base material 21 is a resin film such as a PET film or a PP film. Nonwoven fabric 22A, 22B is PP nonwoven fabric, for example. The nonwoven fabric 2 is preferably subjected to antistatic treatment, for example, impregnated or coated with any of a surfactant, a humectant, a hydrophilic agent, and a conductive agent. A conductive layer 21 </ b> A is provided on the entire surface of the substrate 21 on the human body side by printing or the like. A non-woven fabric 22A is provided on the human body side surface of the base material 21 so as to cover the conductive layer 21A. Silver-silver chloride 26 is provided on the surface of the substrate 21 on the side opposite to the human body by printing or the like. A non-woven fabric 22 </ b> B is provided on the surface of the base 21 on the side opposite to the human body so as to cover the silver-silver chloride 26 except for both ends.

  The main body portion 10 and the lead portion 20 are separately manufactured and partially overlapped as shown in FIG. 10 or FIG. In this overlapping portion, the silver-silver chloride 6 of the main body portion 10 and the silver-silver chloride 26 of the lead portion 20 face each other and are electrically connected, and the main body portion 10 and the lead portion 20 are mutually connected. Fixed. The biological signal is transmitted from the silver-silver chloride 6 of the main body unit 10 to the silver-silver chloride 26 of the lead unit 20 and further transmitted to a measuring device (not shown).

  In the example of FIG. 10, the silver-silver chloride 6 of the main body 10 and the silver-silver chloride 26 of the lead 20 are electrically connected to each other by the bonding member 30, and the main body 10 and the lead 20 are bonded. The members 30 are fixed to each other. The joining member 30 is provided so as to be interposed between the silver-silver chloride 6 of the main body portion 10 and the silver-silver chloride 26 of the lead portion 20 (the silver-silver chloride 6, 26 is indirectly provided by the joining member 30. Connected). The joining member 30 is, for example, a conductive double-sided tape or solder formed by soldering.

  In the example of FIG. 11, in a state where the silver-silver chloride 6 of the main body portion 10 and the silver-silver chloride 26 of the lead portion 20 are in direct contact with each other and electrically connected, The base material 21 of the lead part 20 is fixed to each other by welding. The welding is, for example, ultrasonic welding or heat welding. In place of or in addition to welding, as shown in FIG. 12, the main body 10 and the lead 20 may be fixed to each other by a fastener 31 such as a staple. Moreover, you may combine the fixing by welding or the fastener 31 with the fixing by the above-mentioned indirect connection (conductive double-sided tape or solder). The fastener 31 may be, for example, a stapleless staple (a crimp between films) or a paper staple.

  According to the present embodiment, the following effects can be achieved.

(1) Since the main body portion 10 and the lead portion 20 can be manufactured separately, it is possible to reduce material loss compared to a case where the main body portion 10 and the lead portion 20 are manufactured integrally.

(2) Since the conductive layer 1A provided on the surface of the substrate 1 on the side opposite to the human body is electrically connected to the ground gel 5, the noise reduction effect is enhanced.

(3) Since the two ground gels 5 come into contact with the human body at different positions, a further noise reduction effect can be achieved as compared with the case where the ground gel is only one.

(4) In the lead part 20, since the nonwoven fabrics 22 </ b> A and 22 </ b> B are provided on both surfaces of the base material 21, it is possible to prevent noise from entering from the lead part 20. In addition, if a nonwoven fabric is provided in at least one surface of the base material 21, the noise prevention effect will be acquired compared with the case where a nonwoven fabric is not provided.

(5) Since the nonwoven fabric 2 is provided on the surface of the substrate 1 on the side opposite to the human body, the generation of static electricity is reduced and noise is reduced as compared with the case where the nonwoven fabric 2 is not provided. In particular, since the material of surgical clothes worn by doctors and patients is often PP, if the nonwoven fabric 2 is a PP nonwoven fabric, the effect of preventing the generation of static electricity is high.

(6) Since the main body part 10 and the lead part 20 are made of a material that transmits X-rays, the body part 10 and the lead part 20 become X-ray transmission type bioelectrodes, and are suitable for use in treatment while transmitting X-rays.

Embodiment 2
FIG. 13 is a cross-sectional view in the lateral direction of the main body 10 of the bioelectrode according to the second embodiment of the present invention. The bioelectrode of the present embodiment is different from that of the first embodiment in that the through holes 13 for conducting the ground gel 5 and the conductive layer 1A are eliminated, but both ends of the base material 1 are on the ground gel 5 side. It is different in that the ground gel 5 and the conductive layer 1 </ b> A are electrically connected (directly contacted) with each other, and are identical in other points. The present embodiment can achieve the same effects as the first embodiment.

Embodiment 3
FIG. 14 is an enlarged perspective view of a main part of the biological electrode according to Embodiment 3 of the present invention, as viewed from the anti-human body side in a state where the main body part 10 and the lead part 20 are disassembled. The bioelectrode according to the present embodiment is different from that according to the first embodiment in that a waterproof member 40 is provided on the surface of the base material 1 of the main body 10 on the side opposite to the human body. Match. The waterproof member 40 is a moisture permeable waterproof sheet having adhesiveness on the surface of the human body using, for example, a polyolefin-based resin foam sheet (product name “Borara” manufactured by Sekisui Chemical Co., Ltd.). The waterproof member 40 entirely covers the main body 10 except for a part of the overlapping portion with the lead portion 20. According to the present embodiment, it is convenient to take a shower with the bioelectrode attached.

  The present invention has been described above by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way.

1 base material, 1A conductive layer, 2 non-woven fabric, 5 earth gel, 6 silver-silver chloride, 9 conductive gel, 10 main body, 13 through-hole, 20 lead portion, 21 base material, 21A conductive layer, 22A, 22B non-woven fabric, 26 Silver-silver chloride, 30 joint members, 31 fasteners, 40 waterproof members

Claims (18)

A main body unit that is attached to a human body and obtains a biological signal;
A lead portion for leading the biological signal from the main body portion to the outside,
Each of the main body portion and the lead portion has a base material and a conductive pattern formed on the base material,
The biological electrode, wherein the main body and the lead are fixed to each other in a state where the conductive pattern of the main body and the conductive pattern of the lead are electrically connected to each other.   The main body portion and the lead portion partially overlap, and the conductive pattern of the main body portion and the conductive pattern of the lead portion face each other and are electrically connected to each other at the overlapped portion. The biological electrode according to claim 1, wherein the main body portion and the lead portion are fixed to each other.   The bioelectrode according to claim 1 or 2, wherein the base material of the main body part and the base material of the lead part are welded to each other.   The biological electrode according to any one of 1 to 3, wherein the main body portion and the lead portion are fixed to each other by a fastener.   The bioelectrode according to any one of claims 1 to 4, wherein the conductive pattern of the main body part and the conductive pattern of the lead part are in direct contact with each other.   The bioelectrode according to any one of claims 1 to 4, wherein the conductive pattern of the main body portion and the conductive pattern of the lead portion are indirectly connected to each other.   The conductive pattern of the main body part and the conductive pattern of the lead part are electrically connected to each other and fixed to each other by a conductive tape. Bioelectrode.   The living body according to any one of claims 1 to 4, wherein the conductive pattern of the main body portion and the conductive pattern of the lead portion are electrically connected to each other by solder bonding and are fixed to each other. electrode.   The main body has the conductive pattern on the human body side surface of the base material, and is provided on the human body side surface of the base material, and a conductive layer provided on the anti-human body side surface of the base material. The conductive gel that is electrically connected to the conductive pattern and the earth gel that is provided at a position different from the conductive gel on the human body side surface of the substrate and is electrically connected to the human body. The bioelectrode according to item.   The biological electrode according to claim 9, wherein a plurality of the earth gels are provided to sandwich the conductive gel.   The bioelectrode according to claim 9 or 10, wherein the conductive layer and the earth gel are electrically connected to each other.   The biological electrode according to claim 11, wherein the conductive layer and the earth gel are electrically connected to each other through a hole provided in the base material.   The biological electrode according to claim 11, wherein the conductive layer and the earth gel are electrically connected to each other by folding the base material.   The biological electrode according to any one of claims 9 to 13, wherein the main body has a waterproof member on a surface of the base on the side opposite to the human body.   The bioelectrode according to any one of claims 9 to 14, wherein the earth gel is an adhesive gel.   The said lead part is a bioelectrode as described in any one of Claim 1 to 15 which has a nonwoven fabric in the at least one side of the human body side and anti-human body side of the said base material.   The bioelectrode according to claim 16, wherein the nonwoven fabric is subjected to an antistatic treatment.   The biological electrode according to any one of claims 1 to 17, which is made of a material that transmits X-rays.