JP2013230182A - Method of manufacturing bioelectrode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing bioelectrodes capable of forming a conductor serving as a shield integrally in a bioelectrode, and capable of efficiently manufacturing a number of bioelectrodes.SOLUTION: An insulator 4 and earth gel 5 are layered at different positions on the same layer on an underlay film 30. A base material 1 (with a conductor on one side) is layered astride over the two layers in such a way as to cover both the insulator 4 and the earth gel 5, and a nonwoven fabric 2 is further layered. The layered body on the underlay film 30 is cut into a plurality of pieces 51 in a prescribed shape leaving the underlay film 30, and one side of a slit 31 of the underlay film 30 is released. A receiver 6 is stuck to an exposed part of the insulator 4 in each piece 51, and a sponge 8 is stuck onto the receiver 6 with a double-sided adhesive tape 7 with one end of a cable 11 placed on the receiver 6. Aqueous gel 9 is injected into the sponge 8 and a cover 10 is stuck to the exposed part of the insulator 4.

Description

  The present invention relates to a method of manufacturing a biological electrode used for acquiring a biological signal.

  In order to prevent noise such as static electricity due to clothing friction, it is conventionally known that a bioelectrode shield is fixed so as to cover at least a biosignal deriving portion (conductive gel) above the bioelectrode (Patent Document 1 below). ). This shield for bioelectrodes has an insulating sheet member in which a conductive layer is formed so as to cover the conductive gel of the bioelectrode, and an adhesive conductive gel formed in an electrically connected state to the conductive layer. The conductive layer has the same potential as the human body due to the conductive conductive gel, and the influence of external noise on the electrode part that induces bioelectricity from the measurement target part is attenuated.

Registered Utility Model No. 3020953

  In Patent Document 1, the living body electrode and the shield are substantially separate members, and even when a large number of pieces are manufactured, it is necessary to individually fix each living body electrode with a shielding sheet or tape, There is a problem that it takes time and cost.

  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 integrally forming a conductor as a shield on the bioelectrode and efficiently manufacturing a large number of them. It is to provide a manufacturing method.

One embodiment of the present invention is a method for producing a bioelectrode. This method
Cutting the laminate in which at least the insulator, the conductor, and the base material are sequentially laminated on the underlaying material into a plurality of pieces having a predetermined shape, leaving the underlaying material;
In the state where the connection between the pieces is maintained by the other part excluding the part of the underlay material while exfoliating a part of the underlay material and exposing a part of the insulator of each piece. Adhering a receiver to the part of the body;
Adhering a sponge to the receiver, and impregnating the sponge with a water-containing gel, and then peeling the other part of the underlaying material.

  A slit or a cut may be formed in advance in the underlay material, and the part and the other portion of the underlay material may be partitioned by the slit or the cut.

  An annular double-sided adhesive tape may be bonded to the sponge, and the sponge may be bonded to the receiver by the adhesive force of the double-sided adhesive tape.

  In the step of forming the laminated body, a roll-shaped insulator may be bonded while being fed onto the underlay material.

  In the step of forming the laminated body, a base material that is a roll-shaped base material and a conductor is provided on one surface may be bonded to the insulator while being fed out.

  In the step of forming the laminate, the insulator and the earth gel are laminated on the underlay material in the same layer, and the conductor and the base are straddled over both layers so as to cover both the insulator and the earth gel. You may laminate | stack a material.

  The insulator and the earth gel are bonded to the underlay material while being fed out from a roll, and the roll-shaped substrate on both layers is bonded to the base material provided with a conductor on one surface. Also good.

  When the sponge is bonded to the receiver, a lead wire may be sandwiched between the two.

  In the step of forming the laminate, a nonwoven fabric may be bonded onto the base material on the underlay material.

  After the sponge is soaked with the water-containing gel, a cover is adhered to the part of the insulator, the part and the sponge are covered with the cover, and the other part of the underlaying material is peeled off The cover may be adhered to the remaining portion of the insulator so that the insulator is entirely covered with the cover.

  It should be noted that any combination of the above-described constituent elements and a representation obtained by converting the expression of the present invention between objects and systems are also effective as an aspect of the present invention.

  According to the present invention, a conductor serving as a shield can be formed integrally with a biological electrode, and a large number can be efficiently manufactured.

Process explanatory drawing (the 1) of the manufacturing method of the bioelectrode which concerns on embodiment of this invention. Process explanatory drawing (the 2). Process explanatory drawing (the 3). The perspective view of the bioelectrode 100 manufactured by the same method. The disassembled perspective view of the bioelectrode 100. FIG. The top view of the double-sided adhesive tape 7 of the bioelectrode 100. FIG. The disassembled perspective view of the bioelectrode of another form. Furthermore, the partially exploded upper perspective view of the bioelectrode of another form. The partially exploded lower perspective view of the same bioelectrode. The partially exploded side view of the bioelectrode. FIG. 11 is a partially enlarged view of FIG. 10.

  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.

  1-3 is process explanatory drawing of the manufacturing method of the bioelectrode which concerns on embodiment of this invention. FIG. 4 is a perspective view of the bioelectrode 100 manufactured by the same method. FIG. 5 is an exploded perspective view of the bioelectrode 100. First, the configuration of the completed biological electrode 100 will be described with reference to FIGS. 4 and 5, and then the manufacturing method of the present embodiment will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 4, the bioelectrode 100 includes an electrode unit 20, a cover 10 that covers the human body side of the electrode unit 20 when not in use, and a cable 11 that electrically connects the electrode unit 20 and an external device (not shown) to each other. With. One end of the cable 11 is in contact with the electrode unit 20, and the other end is provided with a connector 12 for connection to an external device.

  As shown in FIG. 5, the electrode unit 20 includes a base material 1, a nonwoven fabric 2, a conductor 3, an insulator 4, an earth gel 5, a receiver 6, a double-sided adhesive tape 7, a sponge 8, A hydrogel 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 conductor 3 is, for example, conductive ink, and is applied to the substrate 1 by printing or the like. The insulator 4 is, for example, a bioadhesive (skin application) double-sided adhesive tape. The earth gel 5 is a conductive gel having adhesiveness. The receiver 6 is obtained by applying silver-silver chloride to the human body side of a resin film such as a PET film. The hydrogel 9 has a water content of 80% by weight and contains Cl ions for electrical conduction. The water content of the hydrogel 9 is preferably 60% by weight or more from the viewpoint of reducing impedance with the human body (skin).

  A non-woven fabric 2 is provided (adhered) on the surface of the substrate 1 on the side opposite to the human body. The nonwoven fabric 2 has substantially the same shape as the base material 1 when viewed from the plane perpendicular to the base material 1. The conductor 3 is provided on the human body side surface of the substrate 1 (applied over the entire surface). An insulator 4 is provided (adhered) on the surface of the conductor 3 on the human body side. The insulator 4 also has adhesiveness on the surface on the human body side. The receiver 6 is provided on the human body side surface of the insulator 4 (adhered by the adhesive force of the insulator 4). The hydrated gel 9 is soaked in the sponge 8 because its shape is not fixed by itself. The sponge 8 soaked with the hydrous gel 9 is provided on the human body side of the receiver 6. Adhesion between the sponge 8 and the receiver 6 is performed by a double-sided adhesive tape 7. That is, the double-sided adhesive tape 7 has an annular shape (here, a donut shape) that is bonded to the surface of the sponge 8 on the side opposite to the human body and surrounds the center of the surface, and bonds the sponge 8 and the receiver 6 together. The double-sided adhesive tape 7 preferably circulates around the outer peripheral edge of the surface of the sponge 8 on the side opposite to the human body or the vicinity thereof. The earth gel 5 is provided on a human body side surface of the conductor 3 and at a position different from the insulator 4. In addition, even if the ground gel 5 overlaps the insulator 4, it is functionally good if the ground gel 5 is in contact with the human body.

  The cover 10 includes a flat portion 10a and a concave portion 10b that is recessed from the flat portion 10a. The flat portion 10a faces a portion of the electrode unit 20 excluding the sponge 8. The recess 10b houses the sponge 8 and the like. The cover 10 is made of resin, and silicone or fluorine (release agent) is formed on a contact portion with the electrode unit 20 (contact surface with the insulator 4 and the earth gel 5) in order to improve releasability from the electrode unit 20. Is coated. Further, in order to improve the peeling workability between the cover 10 and the electrode unit 20, a part of the electrode unit 20 facing the cover 10 and a part having no adhesiveness is provided except for the sponge 8. . Specifically, the outer peripheral edge of the ground gel 5 opposite to the insulator 4 is inside the outer peripheral edge of the laminate of the base material 1, the nonwoven fabric 2, and the conductor 3. For this reason, the said laminated body is extended outside the said outer periphery of the earth gel 5, and the user can peel the electrode unit 20 from the cover 10 easily by holding this extended part. Note that the non-adhesive portion may be provided by bringing the outer peripheral edge of the insulator 4 to the inside.

  The cable 11 is a carbon wire, and its end is sandwiched between the receiver 6 and the sponge 8. The cable 11 is held by the double-sided adhesive tape 7. For this reason, as shown in FIG. 6, the double-sided adhesive tape 7 is preferably formed such that the center hole has a D shape, for example, and a part of the circumference is a wide part 7a, and the cable 11 is adhered and held by the wide part 7a.

  Prior to use, the bioelectrode 100 is stored in a moisture-proof bag. In use, the bioelectrode 100 is taken out from the moisture-proof bag, the cover 10 is removed, the sponge 8 soaked with the hydrogel 9 is brought into contact with a predetermined part of the human body, and the insulator 4 and the earth gel 5 are bonded to the human body. Then, the biological signal is transmitted through the hydrogel 9 and received by the receiver 6 and transmitted to the external device via the cable 11. On the other hand, the conductor 3 is electrically connected to the human body via the earth gel 5 and has a potential close to that of the human body. For this reason, the conductor 3 becomes a shield against noises such as external static electricity, and noise can be prevented from entering the biological signal.

  Hereinafter, the manufacturing method of the present embodiment will be described with reference to FIGS.

  As shown in FIG. 1A, an underlay film 30 is prepared as an underlay material. The underlay film 30 is a base material made of, for example, a PET film, and is used in the manufacturing process and finally removed. The underlay film 30 is provided with slits 31 and positioning holes 32. The slit 31 is formed so as to cross an intermediate portion (preferably a central portion) of the underlay film 30 and penetrates the underlay film 30 in the thickness direction. The positioning hole 32 functions as a reference hole for alignment in each process described later. The underlay film 30 is preferably drawn out from a roll shape, and the underlay film 30 shown in FIG. 1 (A) is one of a number of compartments arranged in a long length (a slit 31 is provided in each compartment). The positioning hole 32 is provided on the center side with respect to the length of the slit 31).

  On the underlying film 30, the insulator 4 and the earth gel 5 are laminated (adhered) in the same layer and at different positions on the basis of the positioning holes 32. At this time, preferably, the insulator 4 and the earth gel 5 are each fed out from the roll shape and bonded together to a number of sections of the underlay film 30. The bonding position of the insulator 4 is a position straddling both sides of the slit 31. The bonding position of the earth gel 5 is in the vicinity of the insulator 4.

  As shown in FIG. 1 (B), the base material 1 is laminated (adhered) over both layers so as to cover both the insulator 4 and the earth gel 5 with the positioning hole 32 as a reference, and the nonwoven fabric 2 is further bonded. Laminate (adhere). In addition, conductive ink (conductor 3 in FIG. 5) is printed on one surface of the substrate 1, and the substrate 1 is laminated so that the conductive ink is on the insulator 4 and the earth gel 5 side. At this time, the roll-shaped base material 1 preferably coated with conductive ink on one side is bonded to a large number of compartments while being fed onto the insulator 4 and the earth gel 5. And preferably, the roll-shaped nonwoven fabric 2 is bonded to a large number of compartments while being fed onto the substrate 1.

  As shown in FIG. 1C, a laminate on the underlay film 30 (the first layer is an insulator 4 and an earth gel 5, the second layer is a substrate 1 provided with a conductor 3, and the third layer is a non-woven fabric 2). Is cut into a plurality of pieces 51 having a predetermined shape (half cut), leaving the underlay film 30. Here, it cuts into 6 pieces 51 per division. In FIGS. 2 and 3 to be described later, the thickness of the underlay film 30 and the piece 51 is shown smaller than that in FIG. After the process of FIG. 1C, the underlay film 30 is divided into sections, and the whole is turned over so that the underlay film 30 is on the upper side. Note that FIG. 1D is a diagram for explaining reduction of the cutting line at the time of division, and elements other than the underlay film 30 are omitted in this drawing.

  As shown in FIG. 2 (A), a part of the underlay film 30 is peeled off to expose a part of the insulator 4 of each piece 51, and the remaining pieces of the underlay film 30 make the pieces 51 to each other. The connection is maintained. Specifically, one side (the side where the earth gel 5 does not exist) of the slit 31 is peeled from the underlying film 30. At this time, both ends of the underlay film 30 are cut due to the presence of the slits 31 (for example, cut at a cutting line connected to the ends of the slits 31 as shown in FIG. 1D when divided into sections). Thus, a part of the underlay film 30 can be easily peeled off.

  As shown in FIG. 2B, the receiver 6 is bonded to the exposed portion of the insulator 4 of each piece 51. Next, as shown in FIG. 2 (C), with one end (the end opposite to the connector 12) of the cable 11 (lead wire assembly) placed on each receiver 6, FIG. As shown, a sponge 8 is bonded to the receiver 6 with a double-sided adhesive tape 7. At this time, one end of the cable 11 is bonded and held by the wide portion 7 a of the double-sided adhesive tape 7.

  As shown in FIG. 3 (A), a predetermined amount of water-containing gel 9 is injected (soaked) into each sponge 8. Thereafter, as shown in FIG. 3B, the cover 10 is adhered to the exposed portion of the insulator 4 to cover the exposed portion of the insulator 4 and the sponge 8 with the cover 10, and the remaining portion of the underlay film 30 is peeled off. Then, the cover 10 is adhered to the remaining portion of the insulator 4, and the insulator 4 is entirely covered with the cover 10 (the insulator 4 is covered with the flat portion 10a of the cover 10 and the sponge 8 is covered with the recess 10b). And it puts into a moisture-proof bag not shown in the unit of 1 section (six pieces 51), and packs up as needed.

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

(1) Since the conductor that serves as a shield against noise can be formed integrally with the biological electrode, unlike the conventional case, it is not necessary to individually fix each biological electrode with a shielding sheet or tape. . Therefore, there is no need to fix the shield as compared with the conventional case, and the manufacturing is easy and the cost is low.

(2) When the laminated body on the underlay film 30 is divided into a plurality of pieces 51, the underlay film 30 is peeled off while exposing a part of the insulator 4 of each piece 51. Since the connection between the pieces 51 is maintained by the remaining 30 parts, the pieces 51 in the same section are not separated in the subsequent work, and the workability is good. Further, the part of the underlying film 30 can be easily peeled off by using the slit 31 of the underlying film 30.

(3) On the underlay film 30, the insulator 4, the earth gel 5, the base material 1 (with a conductor on one side), and the non-woven fabric 2 are rolled out and laminated, so that a large number of laminated bodies are collected at once. Manufacturing efficiency and good manufacturing efficiency.

(4) Since the sponge 8 is bonded to the receiver 6 with the double-sided adhesive tape 7, unlike the case of using hot melt, it is not necessary to heat and hold the dispenser at a high temperature or a thermostatic bath.

(5) Since the sponge 8 impregnated with the water-containing gel 9 containing 60% by weight or more of moisture is used for biosignal acquisition, a conductive cream or the like is used unlike a case where an adhesive conductive gel is used. The impedance with the human body can be reduced without painting. Therefore, the conductive cream and the work of applying it are unnecessary, and labor and cost are reduced as compared with the conventional case.

(6) Since the substrate 1 is a resin film, the conductive ink as the conductor 3 can be uniformly applied, and the shielding effect is high.

(7) 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.

(8) Since the double-sided adhesive tape 7 for bonding the sponge 8 and the receiver 6 has a donut shape, the bonding workability is good, and the sponge 8 and the receiver 6 are in contact with each other over a wide area inside the donut shape. The reception sensitivity of biological signals is high. Furthermore, since the cable 11 is bonded and held by the wide portion 7a of the double-sided adhesive tape 7, the holding strength of the cable 11 is high.

(9) Since the cover 10 is made of resin and silicone is applied to the contact surface with the insulator 4 and the earth gel 5, the cover 10 can be easily peeled off (easy to remove) during use, and the electrode when the cover 10 is peeled off Unit deformation is reduced. Moreover, since the laminated body of the base material 1, the nonwoven fabric 2, and the conductor 3 extends outside the outer peripheral edge on the side opposite to the insulator 4 of the earth gel 5, the user can use this extended portion. The electrode unit 20 can be easily peeled from the cover 10 by hand.

(10) Since the electrode unit 20 is all made of a material that transmits X-rays and uses a carbon wire for the cable 11 that connects the receiver 6 and the external device, the biological electrode 100 becomes an X-ray transmission type. It is also suitable for use in treatment while transmitting X-rays.

  FIG. 7 is an exploded perspective view of a bioelectrode having a form different from that shown in FIGS. 4 and 5. In this bioelectrode, the insulator 4 is smaller than those shown in FIGS. 4 and 5, and thereby an earth gel 5 ′ is provided in the vacant space (a plurality of earth gels are provided and the insulator 4 is provided). The other points are the same. The earth gel 5 ′ extends on the surface of the receiver 6 on the side opposite to the human body. According to this embodiment, the earth gels 5 and 5 'come into contact with the human body at different positions so that the conductor 3 is reliably and stably at the same potential as the human body. Further noise reduction effects can be achieved. In manufacturing, the ground gel 5 ′ together with the insulator 4 and the ground gel 5 are laminated (adhered) on the underlying film 30 in the same layer and at different positions. The bonding position of the receiver 6 extends over the exposed portion of the insulator 4 and the exposed portion of the earth gel 5 '. Other points in the manufacturing method are the same as those of the embodiment described with reference to FIGS.

  FIG. 8 is a partially exploded upper perspective view of a bioelectrode having a different form from that shown in FIGS. 4, 5, and 7. FIG. 9 is a partially exploded lower perspective view of the bioelectrode. FIG. 10 is a partially exploded side view of the bioelectrode. FIG. 11 is a partially enlarged view of FIG. In these figures, the resin film 61 (PET film or the like) of the receiver 6 and the silver-silver chloride 62 applied thereto are separately shown. Unlike the one shown in FIGS. 4 and 5, this bioelectrode is configured to be connected to an external device (not shown) with a clip or the like. Hereinafter, the description will focus on the differences, and the description on the points of coincidence will be omitted as appropriate.

  Each of the resin film 61 and the silver-silver chloride 62 constituting the receiver 6 has extending portions 61 a and 62 a extending in the same shape on the outside of the sponge 8. The base material 1 and the conductor 3 respectively have folded portions 1a and 3a. The folded portions 1 a and 3 a are narrower than the main surface portions of the base material 1 and the conductor 3, extend outward from the main surface portions, and are folded back to the anti-human body side. The folded portion 3a of the conductor 3 is exposed on the surface on the anti-human body side. The extending portions 61a and 62a of the resin film 61 and the silver-silver chloride 62, and the folded portions 1a and 3a of the base material 1 and the conductor 3 sandwich the extending portion 4a of the insulator 4 between them. 1 are substantially in the same position as viewed from the direction perpendicular to the surface of the substrate 1 and have substantially the same shape on the outside of the main surface portion of the substrate 1, and by sandwiching them with clips, the extended portion 62a of the silver-silver chloride 62 can be Connected to the signal acquisition terminal of the device, the folded portion 3a of the conductor 3 can be connected to the ground terminal of the external device. Since the conductor 3 is connected to the ground terminal of the external device, the ground gel 5 shown in FIG. 5 is not used, and the insulator 4 is made larger correspondingly. Considering the peelability from the cover 10, the outer peripheral edge of the insulator 4 may be set inside the outer peripheral edges of the substrate 1, the nonwoven fabric 2 and the conductor 3. According to this embodiment, the same effects as those of the embodiments of FIGS. 4 and 5 can be obtained except that the X-ray transmission type is not achieved due to the clip connection.

  In the production, the base material 1, the conductor 3 (already applied to the base material 1), and the insulator 4 are pre-stacked (roll-shaped) portions corresponding to the folded portions 1a, 3a and the extending portion 4a. Form from the stage. The earth gel 5 is not laminated on the underlying film 30. After the base material 1 and the conductor 3 (already applied to the base material 1) are laminated on the insulator 4, the folded portions 1a and 3a are folded back to the front of the non-woven fabric 2 (not overlapped with the non-woven fabric 2). In addition, the resin film 61 and the silver-silver chloride 62 constituting the receiver 6 are provided with extension portions 61 a and 62 a in advance, and are adhered to predetermined positions on the insulator 4. Since the connection with the outside is by a clip, the cable 11 is not attached. Other points in the manufacturing method are the same as those of the embodiment described with reference to FIGS.

  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. Hereinafter, modifications will be described.

  Depending on the application, there may be no non-woven fabric.

  The underlay material is not limited to a film shape, and may be a sheet shape, for example.

  Instead of the slit 31, a cut having no width may be provided.

  The substrate 1 is not limited to a resin film, and may be a nonwoven fabric such as a PP nonwoven fabric or a cloth. In this case, a non-woven fabric is not provided on the anti-human body side of the substrate 1. Regarding the application uniformity of the conductive ink as the conductor 3, the base material 1 is preferably a resin film, but in other respects, this modification can also obtain the same effects as those of the embodiment.

DESCRIPTION OF SYMBOLS 1 Base material 2 Nonwoven fabric 3 Conductor 4 Insulator 5 Ground gel 6 Receiver 61 Resin film 62 Silver-silver chloride 7 Double-sided tape 7a Wide part 8 Sponge 9 Hydrous gel 10 Cover 10a Flat part 10b Recess 11 Cable 12 Connector 20 Electrode unit 30 Underlay film 31 Slit 32 Positioning hole 100 Bioelectrode

Claims (10)

Cutting the laminate in which at least the insulator, the conductor, and the base material are sequentially laminated on the underlaying material into a plurality of pieces having a predetermined shape, leaving the underlaying material;
In the state where the connection between the pieces is maintained by the other part excluding the part of the underlay material while exfoliating a part of the underlay material and exposing a part of the insulator of each piece. Adhering a receiver to the part of the body;
A method of manufacturing a bioelectrode, comprising: adhering a sponge to the receiver and impregnating the sponge with a water-containing gel, and then peeling the other part of the underlay material.   2. The bioelectrode production according to claim 1, wherein a slit or a cut is formed in advance in the underlay material, and the part and the other portion of the underlay material are partitioned by the slit or the cut. Method.   The bioelectrode manufacturing method according to claim 1, wherein an annular double-sided adhesive tape is bonded to the sponge, and the sponge is bonded to the receiver by an adhesive force of the double-sided adhesive tape.   The method for producing a bioelectrode according to any one of claims 1 to 3, wherein in the step of forming the laminated body, a roll-shaped insulator is adhered while being fed onto the underlaying material.   5. The step of forming the laminated body includes a roll-shaped base material, and a base material provided with a conductor on one surface is bonded to the insulator while being fed out. The manufacturing method of the bioelectrode as described in any one of.   In the step of forming the laminate, the insulator and the earth gel are laminated on the underlay material in the same layer, and the conductor and the base are straddled over both layers so as to cover both the insulator and the earth gel. The manufacturing method of the bioelectrode as described in any one of Claim 1 to 3 which laminates | stacks a material.   The insulator and the earth gel are adhered while being fed out from the roll on the underlaying material, and are adhered while being fed out a base material that is a roll-shaped base material on one surface and a conductor is provided on one surface. The manufacturing method of the bioelectrode of Claim 6.   The bioelectrode manufacturing method according to claim 6 or 7, wherein a lead wire is sandwiched between the two when the sponge is bonded to the receiver.   The method for producing a bioelectrode according to any one of claims 1 to 8, wherein in the step of forming the laminate, a non-woven fabric is bonded onto the base material on the underlay material.   After the sponge is soaked with the water-containing gel, a cover is adhered to the part of the insulator, the part and the sponge are covered with the cover, and the other part of the underlaying material is peeled off The bioelectrode manufacturing method according to any one of claims 1 to 9, wherein the cover is bonded to the remaining portion of the insulator and the insulator is entirely covered with the cover.