JP5837953B2 - Adhesive pad sheet - Google Patents

Description

  The present invention relates to an adhesive pad that holds a biological electrode that is attached to a subject and extracts an electrical signal from the living body. This technique is particularly applicable to electrocardiograph electrodes and electroencephalogram electrodes.

Bioelectricity generated by activities of the human heart, brain, muscles, etc. can be used for various diagnoses such as guided electrocardiogram examination and electroencephalogram examination. Although bioelectrodes are used for these examinations, it is preferable to use disposable ones because there are the following problems when body fat or keratin adheres when the bioelectrode is reused for many subjects.
[1] Interfacial activity of the electrode is hindered and electrical characteristics are lowered, making accurate measurement difficult.
[2] Adhesiveness of the conductive gel for attaching the electrode to the human body is lowered, making it difficult to stick to the skin surface, increasing noise and degrading measurement accuracy.
[3] There is a risk of cross-infection between subjects.

  However, for example, if an electrocardiograph electrode is thrown away every time, the electrocardiograph electrode is expensive, leading to an increase in medical costs, and a reduction in medical waste due to effective use of resources. Since it is not necessarily desirable in this aspect, the current situation is that it is difficult to spread.

  In order to respond to such a problem, the present applicant divides the biological electrode and the adhesive pad that is attached to the human body as separate members so that the used adhesive pad can be separated and discarded. An electrocardiograph electrode that can be used repeatedly according to the number of service life is proposed (Patent Document 1).

JP 2007-252473 A

  This disposable electrocardiograph electrode is an excellent electrode with a rational structure from the viewpoint of effective use of resources, in which only the adhesive pad is disposable for a single use, and the measurement accuracy deteriorates and cross-infection occurs. Although the above-described inconveniences can be reliably avoided, it has been found that there are the following problems.

  The electrocardiograph electrode includes a contact connected to the electrocardiograph, a lead wire connecting one end of the core wire to the contact, and a measurement electrode connecting the other end of the core wire. Of these, the lead wire and the measurement electrode are made of an X-ray transparent material, and the X-ray imaging can be performed while the electrocardiograph electrode is attached to the body.

  However, when X-ray photography was actually performed using this electrocardiograph electrode, it was found that the shadow of the measurement electrode was slightly reflected. When the cause was investigated, it turned out that it exists in the structure of the measurement electrode which connects a lead wire. That is, this electrode uses a silver-silver chloride electrode having a structure in which a base resin such as ABS formed into a predetermined electrode shape is subjected to silver plating and silver chloride is plated on a silver plating layer. This was the cause of the silver plating layer appearing in the X-ray image. As another electrode structure, there is one in which silver chloride is plated on a flaky silver plate having a predetermined electrode shape, but the silver plate also appears in the same manner as the silver plating layer.

  The present invention has been made against the background of the prior art as described above. That is, an object of the present invention is to improve the X-ray permeability of the bioelectrode and the adhesive pad, based on a configuration in which only the adhesive pad can be disposable by a single use.

  In order to achieve the above object, the present invention is configured as follows.

(1) In the present invention, a bioelectrode pad comprising: an electrode head that is electrically connected to a bioelectric measuring instrument via a lead wire; and an adhesive pad that has one surface that is detachable from the electrode head and that is attached to the subject. about,
The electrode head is a carbon electrode in which an electrode coating film is formed by a paint for electrodes on a conductive carbon sheet,
The adhesive pad is equipped with an adhesive gel that the adhesive pad attaches to the subject and a base material sheet that holds the adhesive gel, and the electrode sheet is held on the adhesive pad by attaching a carbon electrode to the adhesive gel. It has the attachment hole to do.

  Since the electrode head of the bioelectrode is a carbon electrode in which an electrode coating film is formed from an electrode coating material on a conductive carbon sheet, there is no silver plating layer that inhibits X-ray transmission, and the electrode coating film is formed from an electrode coating material. Since the electrode is formed at, the reflection of the electrode head on the X-ray photograph can be improved.

  Since the adhesive pad includes an adhesive gel to be attached to the subject and a base sheet that holds the adhesive gel, the base sheet functions as a reinforcing material and maintains the shape of the adhesive gel, so that the soft adhesive gel It is possible to prevent wrinkles from being generated, damaged or deformed.

  The base sheet has an attachment hole for holding the electrode head on the adhesive pad by attaching a carbon electrode to the adhesive gel. By freely changing the size and shape of the opening of the mounting hole, the holding force of the carbon electrode by the adhesive gel can be adjusted in consideration of the adhesive force between the adhesive gel and the skin. Therefore, the ease of removing the adhesive pad from the electrode head or the skin can be adjusted. Thereby, the adhesive gel can be easily integrated with the electrode head, and the electrode head can be easily peeled off from the adhesive gel. And since the base material sheet can be floated from the skin according to the thickness of the adhesive gel, the base material sheet floating from the skin surface can be picked without touching the skin.

  In the present invention, since the used adhesive pad can be peeled off and discarded, a new unused adhesive pad can be used for each subject while the bioelectrode can be used up to the number of times it can be used.

(2) In the bioelectrode pad of the present invention, for example, silver-silver chloride-containing ink can be used as an electrode paint. By printing or applying it to a predetermined electrode shape, an electrode coating film made of, for example, a silver-silver chloride coating film can be formed.
If the electrode coating film is formed at a position overlapping the attachment hole of the adhesive pad that can be brought close to the living body without passing through the base material sheet in the thickness direction, the bioelectricity pick-up property is enhanced, which contributes to more accurate measurement. it can. In this respect, in the present invention, the electrode coating film can be formed as a printing layer or coating layer whose position, shape, and thickness are controlled by printing or coating, and therefore the electrode coating film considering the positional relationship with the attachment hole of the adhesive pad Can be formed easily and accurately.

(3) In the bioelectrode pad of the present invention, the electrode head includes an electrode disk that holds the carbon electrode and the lead wire. The electrode disk has a lead wire accommodating portion for accommodating the lead wire so as not to protrude toward the carbon electrode, and therefore the electrode surface of the carbon electrode to be adhered to the adhesive gel is a flat surface.
For this reason, the electrode surface of the carbon electrode can be brought into close contact with the adhesive gel of the adhesive pad, and a high holding force for the carbon electrode can be obtained.

(4) In the bioelectrode pad of the present invention, the base sheet is provided with a tab that protrudes outward from the laminated portion with the adhesive gel.
The adhesive pad can be easily peeled from the skin by pinching this tab. Moreover, since the tab floats from the skin surface by the thickness of the adhesive gel, the adhesive pad can be peeled off without touching the skin. In addition, the tabs are not sticky, so they can be easily thrown away from the fingers without clinging to the fingers.

(5) In the bioelectrode pad of the present invention, the attachment hole of the base sheet is provided at a position that does not overlap with the lead wire coating of the electrode head attached to the adhesive pad.
The electrode head is attached to the adhesive gel exposed from the attachment hole of the adhesive pad. When the electrode head is peeled off from the adhesive pad, there is a possibility that the lead wire connected to the electrode head is pulled. In that case, if the part of the adhesive pad that overlaps the coating of the lead wire to which a tensile force is directly applied is an adhesive gel that is exposed from the mounting hole, the adhesive gel is broken by the pull of the lead wire, and the electrode head There is the inconvenience that debris remains and must be removed. However, this can be avoided with the present invention.

(6) In the bioelectrode pad of the present invention, a plurality of small attachment holes are provided as attachment holes for the base sheet.
When one large hole is provided as the attachment hole of the adhesive pad, the portion exposed to the attachment hole becomes a weak portion of only the adhesive gel and may break when the electrode head is peeled off. In order to prevent this, it is desirable to use an adhesive gel in which a reinforcing material such as a non-woven fabric is embedded. However, the cost disadvantage is greater than that of an ordinary adhesive gel. However, according to the present invention, since a plurality of small mounting holes are provided as mounting holes instead of a single large hole, the shearing stress acting on the adhesive gel when peeling off the electrode head can be made small and difficult to break.

(7) In the bioelectrode pad of the present invention as described above, specifically, the bioelectric measuring device can be an electrocardiograph and the electrode head can be an electrocardiograph electrode.

(8) The present invention includes a contact that is electrically connected to the bioelectric measuring device, a lead wire that extends from the contact, and an electrode head that is attached to the end of the lead wire and is attached to the subject via an adhesive pad. The biological electrode is characterized in that the electrode head is provided with a carbon electrode in which an electrode coating film is formed on a conductive carbon sheet with an electrode paint.
According to this, the same operation and effect as the electrode head in the above-mentioned living body electrode pad can be produced.

(9) In the bioelectrode of the present invention, the electrode head is provided with an electrically insulating electrode disk that sandwiches the lead wire with the carbon electrode so that the lead wire does not protrude toward the carbon electrode side. It has a lead wire accommodating portion for accommodating, and the electrode surface of the carbon electrode to be adhered to the adhesive pad is a flat surface.
For this reason, the electrode surface of the carbon electrode can be brought into close contact with the adhesive gel of the adhesive pad, and a high holding force for the carbon electrode can be obtained.

(10) In the present invention, an adhesive pad for a bioelectrode comprising an adhesive gel in which an electrode head of a bioelectrode is held on one side and the other side is attached to a subject, and a substrate sheet holding the adhesive gel The base sheet has a mounting hole for holding the electrode head with the adhesive gel from the base sheet side and a tab on which the adhesive gel is not laminated. By picking up the tab of the base sheet, The adhesive gel is peeled off from the skin.
The adhesive pad can be easily peeled from the skin by pinching this tab. Moreover, since the tab floats from the skin surface by the thickness of the adhesive gel, the adhesive pad can be peeled off without touching the skin. In addition, the tabs are not sticky, so they can be easily thrown away from the fingers without clinging to the fingers.

(11) In the biomedical electrode adhesive pad of the present invention, the attachment hole is formed at a position that does not overlap with the covering of the lead wire connected to the electrode head attached to the adhesive pad.
The electrode head is affixed to the adhesive gel exposed from the attachment hole of the adhesive pad. When this is peeled off from the adhesive pad, the lead wire connected to the electrode head may be pulled. In that case, if the part of the adhesive pad that overlaps the coating of the lead wire to which a tensile force is directly applied is an adhesive gel that is exposed from the mounting hole, the adhesive gel is broken by the pull of the lead wire, and the electrode head There is the inconvenience that debris remains and must be removed. However, this can be avoided with the present invention.

(12) In the present invention, a bioelectrode pressure-sensitive adhesive pad comprising a pressure-sensitive adhesive gel having a bioelectrode electrode head bonded to one surface and the other surface bonded to a subject, and a base material sheet holding the pressure-sensitive adhesive gel A first protective film that includes a first protective film that covers the base sheet side of the adhesive pad, and a second protective film that covers the adhesive gel side of the adhesive pad. Is a resin film that is more flexible and easier to bend than the second protective film.
According to this, since the first protective film on the base sheet side is softer and easier to bend than the second protective film, the first protective film that is flexible and easy to bend is wound, and the base film side of the adhesive pad is first exposed. Can be handled easily.

(13) In the present invention, a bioelectrode pressure-sensitive adhesive pad comprising a pressure-sensitive adhesive gel in which a bioelectrode electrode head is bonded to one surface and the other surface is bonded to a subject, and a base sheet that holds the pressure-sensitive adhesive gel A first protective film that includes a first protective film that covers the base sheet side of the adhesive pad, and a second protective film that covers the adhesive gel side of the adhesive pad. Is attached to the adhesive gel exposed from the attachment hole of the adhesive pad and held.
According to this, even if it does not prepare another affixing method, the 1st protective film can be hold | maintained with the adhesive gel exposed to an attachment hole.

(14) The pressure-sensitive adhesive pad sheet of the present invention can be configured as a structure in which the pressure-sensitive adhesive pads are arranged on the first and second protective films as one set of three, four, five, six or ten. .
For example, 3 or 5 adhesive pad sheets are used for ECG monitoring, 4 adhesive pad sheets are used for limb guidance, and 6 adhesive pad sheets are used for chest guidance. In addition, a set of 10 adhesive pad sheets can be used up for each of the lead electrocardiogram examinations including the limb lead and the chest lead, and it is convenient and material management is also easy.

(15) The second protective film is provided with a perforation capable of separating a plurality of adhesive pads arranged in at least two groups, and the first protective film has a separation edge corresponding to the perforation. The first protective film and the adhesive pad can be divided into a plurality of parts by cutting and separating the second protective film at perforations.
According to this, for example, an adhesive pad sheet in which a plurality of adhesive pads are combined into one sheet can be separated during storage, and a single adhesive pad sheet can be separated into a plurality when using the adhesive pad. For example, when ten adhesive pads are used in the lead electrocardiogram, the adhesive pad sheet is separated into a part including four adhesive pads for limb guidance and a part including six adhesive pads for chest guidance, Since the bioelectrode can be attached by handing it to different persons, the work efficiency of the inspection can be improved.

  The solution according to the present invention can be used specifically as the above-described electrocardiograph electrode, electroencephalogram electrode, or the like.

According to the present invention, a used adhesive pad can be separated from the electrode body and easily replaced with an unused one, and a new adhesive pad can be used for each subject. Therefore, accurate measurement can be realized and cross-infection between subjects can be prevented.
The member exchanged for each subject is only the adhesive pad, and the electrode body composed of the contactor, the lead wire, and the measurement electrode can be used repeatedly. For this reason, compared to existing disposable electrocardiograph electrodes that are disposable, including contacts and lead wires, induction ECG inspection can be performed at a lower cost, and the social and environmental value of effective use of resources Can respond to requests. Therefore, it is possible to eliminate the obstruction factors that have been regarded as an obstacle to the spread of disposable electrocardiograph electrodes, and it is possible to contribute to the implementation of a more accurate and safer electrocardiogram examination.

  In addition, since it is difficult to appear in X-ray photographs, X-ray imaging can be performed with the electrodes for living bodies attached to the body. Therefore, workability such as a health check can be improved and it is suitable for the convenience of the subject.

Explanatory drawing of the electrode for electrocardiographs by one Embodiment. The exploded view of the electrode main body which comprises the electrode for electrocardiographs shown in FIG. It is explanatory drawing which shows the insertion state of the lead wire to an electrode disk, Fig.3 (a) is a bottom view, FIG.3 (b) is SB-SB sectional view taken on the line of Fig.3 (a), FIG.3 (c) is shown. FIG. 3 is a sectional view taken along line SA-SA in FIG. The exploded view of the adhesive pad shown in FIG. The top view which shows the example of embodiment of a gel holding sheet. The exploded view of the adhesion pad sheet by one embodiment. The exploded view of the adhesion pad sheet by other embodiments.

  Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, an electrocardiograph electrode will be described as an example of a “bioelectrode pad”.

  As shown in FIG. 1, the electrocardiograph electrode 1 includes an electrode body 10 as a “biological electrode” and an adhesive pad 50. Among these, the electrode main body 10 includes a contact 20, a lead wire 30, and an electrode head 40.

  The contact 20 includes a terminal connected to an electrocardiograph (not shown) in a cylindrical cover made of hard resin, and a lead wire 30 is connected to the terminal.

  The lead wire 30 is configured by covering a core wire 30a made of conductive and X-ray transparent carbon fiber with a coating 30b made of insulating and X-ray transparent soft resin such as polyethylene resin or silicone resin. .

  As shown in the exploded view of FIG. 2, the electrode head 40 is configured to hold the core wire 30 a of the lead wire 30 between the carbon sheet 41 and the electrode disk 42.

The electrode disk 42 functions as a lid that holds the shape of the carbon sheet 41 and places and fixes the lead wire 30 on the carbon sheet 41. Although it is formed in a flat plate shape, a lead wire accommodating portion 42c that protrudes toward the front surface 42a side of the electrode disk 42 and is recessed in a concave shape on the back surface 42b side of the electrode disk 42 is provided at a portion where the lead wire 30 is introduced and accommodated. ing. If the electrode surface of the electrode head 40 (the back surface 41b of the carbon sheet 41) has a large unevenness due to the lead wire 30 or the like, when it is attached to or detached from the adhesive pad 50, the unevenness causes an adhesion imbalance on the electrode surface. A large stress acts on the projecting portion that strongly adheres, and is easily damaged, and the life of the electrode head 40 itself is shortened. For this reason, the thickness of the lead wire 30 can be absorbed by the lead wire accommodating portion 42c of the electrode disk 42 in order to keep the back surface 41b side of the carbon sheet 41 (that is, the back surface of the electrode head 40) flat.
Such an electrode disk 42 is formed as a molded body of an electrically insulating and X-ray transparent synthetic resin. For example, in addition to a general resin such as an ABS resin, a resin in a broad sense including a relatively flexible material such as a thermoplastic elastomer can be used. Among these materials, in particular, when a thermoplastic elastomer is used, when the electrode head 40 is pressed against the adhesive pad 50 and applied to the human body, the touch is soft and warm without giving a hard touch that presses the hard resin against the skin. It is preferable at the point which gives. The identification mark 42d is provided with a colored sticker so as to serve as a mark for distinguishing each of the electrode heads 40 by color.

The carbon sheet 41 is formed by forming carbon fibers into a sheet shape, and is a flexible and relatively soft sheet. Since it has conductivity, it is used as an exposed electrode of the electrode head 40. As the carbon sheet 41, a carbon woven fabric in which carbon fibers are woven into a sheet shape, a prepreg formed into a sheet shape by impregnating carbon fibers with a resin, and the like can be used. Is a prepreg. The thickness is preferably 80 μm to 300 μm.
The back surface 41b on the opposite side of the front surface 41a where the carbon sheet 41 is in contact with the lead wire 30 has a silver-silver chloride coating film 41c made of silver-silver chloride. This is because silver-silver chloride is superior in terms of picking up electricity from a living body. The silver-silver chloride coating film of the present embodiment is provided by applying a silver-silver chloride-containing ink on the back surface 41 b of the carbon sheet 41 as a thin film. Specifically, it is formed into a thin film by printing or coating a silver-silver chloride-containing ink.

FIG. 3 shows a state where the leading end of the lead wire 30 is housed in the lead wire housing portion 42 c of the electrode disk 42. As shown in the bottom view of FIG. 3 (a) and the cross-sectional view of FIG. 3 (b), the lead wire 30 is broken or the core wire 30a is internally disconnected at the boundary where the lead wire 30 enters the lead wire accommodating portion 42c. A soft lead wire protective material 30c for preventing the above is mounted.
The lead wire protective material 30c does not restrain the lead wire 30 in a tight contact state over its entire length, but is divided into a restrained portion 30d and an unconstrained portion 30e. These portions are formed by using a heat-shrinkable tube as the lead wire protective material 30c and heating and shrinking only the close contact portion 30d to be in close contact.
The boundary between the constrained portion 30d and the non-constrained portion 30e is disposed at a position away from the lead wire accommodating portion 42c of the electrode disk 42 for the following reason.
As with many other biological electrodes, the electrocardiograph electrode 1 is used by being attached to the human body, but the lead wire 30 connecting the human body and the measuring device is pulled obliquely from the rear end of the electrode head 40. (Refer to the two-dot chain line in FIG. 3B). For this reason, the lead wire 30 is not attached to the lead wire 30, and the rear end portion of the electrode disk 42 (introduction port of the lead wire housing portion 42c) can be bent when the lead wire 30 is pulled obliquely. Then, the core wire 30a twisted with the carbon fine wire is easily disconnected. Therefore, in this embodiment, two measures are taken.
One of them is to provide a lead wire protection member 30c, which protects the lead wire 30 by alleviating the sudden bending of the thin and weak lead wire 30. The other is that the lead wire protecting member 30c is divided into a restraining portion 30d and a non-restraining portion 30e, and the boundary portion thereof is positioned outside the lead wire accommodating portion 42c. In this way, the lead wire 30 pulled obliquely tends to bend particularly at the boundary portion, but excessively bent is buffered by abutting against the inner peripheral surface of the unconstrained portion 30e located concentrically. The wire 30 can be protected.

  From the tip of the restraining portion 30d of the lead wire protective material 30c, the core wire 30a without the covering 30b extends without being exposed. The exposed core wire 30a can be brought into contact with the carbon sheet 41 in a state in which individual carbon thin wires constituting the core wire 30a are collected or in a state where the carbon thin wires are fanned out. A fan-shaped arrangement is preferable in terms of contact resistance because the contact area between the carbon fine wire and the carbon sheet 41 increases. Further, it is also preferable in that the back surface 41b of the carbon sheet 41 is not made uneven by the bundled core wires 30a.

The electrode disk 42 and the carbon sheet 41 are fixed with an adhesive, a double-sided tape or the like, and the core wire 30a is connected to the carbon sheet 41, and the leading end of the lead wire 30 is not easily detached from the electrode disk 42. Further, the lead wire 30 is not easily detached by pressing the lead wire protection member 30 c and the lead wire 30 with the lead wire housing portion 42 c and the carbon sheet 41.
In addition, the lead wire protective material 30c can be used as a mark for distinguishing which part of the living body the electrode head 40 should be fixed by color-coding for each individual electrode head 40. By making it the same as the color of the identification mark 42d, the electrode head 40 having an excellent design can be obtained.

  FIG. 4 shows the adhesive pad 50. The adhesive pad 50 is formed by adhering an adhesive gel 51 to a gel holding sheet 52 as a “base material sheet”.

  The adhesive gel 51 is made of a flexible conductive gel and is formed in a rounded rectangular shape in plan view. However, the shape is not limited to such a shape, and the shape should be substantially the same as that of the electrode disk 42. Is preferred. This is because the electrode head 40 having the electrode disk 42 can be firmly fixed to the living body by having substantially the same shape as the electrode disk 42. Although such an adhesive gel 51 has a regularity, even if the adhesive gel 51 is formed by embedding fibers such as a nonwoven fabric in the gel to prevent shear peeling of the gel itself. good. As the adhesive gel 51, various conductive gels such as hydrogel and silicone gel can be used.

  In the gel holding sheet 52, an opening 52a as an “attachment hole” is formed through the thickness of the sheet. This is because the back surface 41 b of the carbon sheet 41, which is the electrode surface of the electrode head 40, is attached to the one surface 51 a of the adhesive gel 51 through the opening 52 a. In addition, adhesion with the electrode head 40, the gel holding sheet 52, and the skin surface of the body utilizes the adhesiveness of the adhesive gel 51 itself.

The shape and number of the openings 52a are not limited to the circle or one shown in FIG. 4 or FIG. 5A, but may be a plurality of openings 52a as shown in FIG. 5B to FIG. 5E, for example. Various shapes and numbers such as a circle and an ellipse can be used.
In these, as shown in FIG.5 (c), it is preferable that the opening 52a is a shape which avoids the position in which the site | part of the coating | cover 30b of the lead wire 30 was provided. Since the opening 52a is avoided by avoiding the portion with the coating 30b, the portion where the lead wire 30 is weak and the adhesive strength is firmly fixed to the adhesive gel 51 to prevent the carbon sheet 41 from being peeled off is prevented. Because you can.

  Moreover, when using the adhesive gel 51 which does not contain a fiber, the some opening 52a as shown in FIG.5 (d) or FIG.5 (e) at the point which makes it difficult to apply a shearing stress to the adhesive gel 51. It is preferable to have. When the opening 52a is large, a large shearing stress is applied to the adhesive gel 51, and the internal gel easily breaks in the adhesive gel 51, and the adhesive gel 51 in the portion of the opening 52a is in a portion other than the opening 52a. It is because it cannot peel from the property gel 51 and cannot be discarded as an adhesive pad.

  The gel holding sheet 52 has a tab 52 b that protrudes outward from a portion where the adhesive gel 51 is laminated, that is, a portion formed in the same shape as the adhesive gel 51. Since the tab 52b protrudes from the adhesive gel 51 and the electrode head 40, the adhesive pad 50 can be removed from the subject without touching the subject, and the adhesive pad 50 can be easily removed from the electrode head 40. Can do. As the material of the gel holding sheet 52, it is preferable to use a relatively hard resin film having a fixed holding property even if it is thin.

As shown in FIG. 6, the adhesive pad 50 as described above covers the gel holding sheet 52 side with a relatively soft first adhesive pad protective film 61a, and the adhesive gel 51 side is a relatively hard second. It is preferable to manufacture the adhesive pad sheet 70 covered with the adhesive pad protective film 61b.
In this embodiment, 10 adhesive pads 50 are arranged as a set on one adhesive pad sheet 70, but this is the same as the number (10) of electrocardiograph electrodes 1 used in the induction electrocardiogram examination. The material management is facilitated by using up one adhesive pad sheet 70 for each subject. As other forms, the adhesive pads 50 are arranged in a set of three, one set of four, one set of five, one set of six, and one set of six, as suitable for induction electrocardiogram examination and monitoring of an electrocardiogram waveform. (It is not shown).

The difference in hardness between the first pressure-sensitive adhesive pad protective film 61a and the second pressure-sensitive adhesive pad protective film 61b is such that the tester who touched the pressure-sensitive adhesive pad sheet 70 can recognize the difference in the film. It is sufficient that the first adhesive pad protective film 61a covering the side is softer than the second adhesive pad protective film 61b covering the adhesive gel 51 side.
When the adhesive pad 50 is used, the gel holding sheet 52 may be peeled from the adhesive pad sheet 70 with the side of the gel holding sheet 52 facing forward (upper side). For this purpose, the first adhesive pad protective film 61a covering the gel holding sheet 52 is easily wound. . On the other hand, the second adhesive pad protective film 61b is given a certain degree of hardness so as to maintain the sheet shape in order to improve the overall handleability of the adhesive pad sheet 70. The difference in relative hardness makes a difference in how easy it is to beat.

The first adhesive pad protective film 61a and the second adhesive pad protective film 61b may be the same type of resin film or different types of resin films, but when using the same type of resin film, The difference is made clear by making the thickness of the second adhesive pad protective film 61b thicker (harder) than that of the first adhesive pad protective film 61a.
In the case of using a different kind of resin film, for example, a urethane resin film having a relatively soft property is used for the first adhesive pad protective film 61a, and a relatively hard PET film is used for the second adhesive pad protective film 61b. Can be used.
In order to make the distinction between the first adhesive pad protective film 61a and the second adhesive pad protective film 61b easier, the colors of the respective adhesive pad protective films 61a and 61b are preferably color-coded.

If the adhesive pad 50 is formed as the adhesive pad sheet 70, it is suitable for storage of the adhesive pad 50, and the usability of the electrocardiograph electrode 1 is improved even when measuring an electrocardiogram.
That is, the soft first adhesive pad protective film 61 a of the adhesive pad sheet 70 is peeled off, and the electrode head 40 is placed on the adhesive pad 50. Thus, the electrode head 40 is adhered to the position where the adhesive gel 51 is exposed through the opening 52a, and the adhesive pad 50 and the electrode head 40 are integrated.
Next, the adhesive pad 50 attached to the electrode head 40 is attached to a predetermined skin surface of the subject's body while peeling off the second adhesive pad protective film 61b. In particular, if the adhesive pads 50 corresponding to the number of electrode heads 40 are provided as one adhesive pad sheet 70, the adhesive pad protective films 61a and 61b are peeled off when the adhesive pads 50 are attached for the required electrode head 40 minutes. Since it only takes one time each, the work can be carried out efficiently.
In the above description, the electrocardiograph electrode 1 with the adhesive pad 50 attached first is attached to the skin surface of the subject. However, after the adhesive pad 50 is first attached to the subject skin surface, the electrode head is applied thereon. 40 may be pasted.

After the measurement, the electrode head 40 and the adhesive pad 50 are peeled off from the skin surface, and the adhesive pad 50 can be easily peeled off from the electrode head 40 by pinching the tab 52b of the gel holding sheet 52. Also, the adhesive pad 50 can be easily discarded without adhering to the fingers.
That is, according to the electrocardiograph electrode 1, the used adhesive pad 50 can be easily separated from the electrode body 10 together with the adhesive gel 51 as described above. Further, the electrode head 40 can be easily attached to the unused adhesive pad 50. Thus, by always using a new adhesive pad 50 for each subject, accurate measurement can be realized for each subject, and cross-infection between subjects can be reliably prevented.

  Only the adhesive pad 50 is exchanged for each subject, and the electrode body 10 can be used repeatedly up to the number of times it can be used. Therefore, compared with the existing disposable electrocardiograph electrodes which are all disposable, the inspection cost can be reduced, and the social and environmental value request of effective use of resources can be met.

In addition to the above-described embodiment, the adhesive pad sheet 70 can be implemented, for example, in the form of FIG.
In this embodiment, the perforation 61c for cutting is provided on the second adhesive pad protective film 61b. At the same time, the first adhesive pad protective film 61a is cut to correspond to the perforation 61c to form a separation edge 61d. The left protective film 61a (6) and the right protective film 61a (4) It is divided into two. Accordingly, the adhesive pad sheet 70 can be divided into a left part having six adhesive pads 50 and a right part having four adhesive pads 50.
According to this, since the adhesive pad sheet | seat 70 can be divided | segmented according to the usage type of the adhesive pad 50, it is convenient. That is, in the example of FIG. 7, when ten adhesive pads 50 are used in the lead electrocardiogram examination, the adhesive pad sheet 70 includes four adhesive pads 50 for guiding the limbs by the perforation 61 c and the separation edge 61 d. The electrode body 10 can be attached to the right side portion and the left side portion including the six adhesive pads 50 for guiding the chest, and can be handed to different persons, thereby improving the work efficiency of the examination. be able to. Moreover, since both surfaces of the adhesive pad sheet 70 are covered with the first and second protective films 61a and 61b even in a state of being divided into two sheets, it is possible to prevent adhesion of foreign matters to the adhesive gel 51 and prevention of damage. However, it is preferable.
Here, the perforation 61c and the separation edge 61d are provided so as to be divided into 6 sheets and 4 sheets, but other combinations may be implemented. Further, if consideration is not given to the prevention of adhesion of foreign substances and prevention of breakage, the present invention can be implemented in a form having only one of the perforation 61c or the separation edge 61d.

1 Electrocardiograph electrodes (bioelectrode pads)
10 Electrode body (biological electrode)
20 Contact 30 Lead wire 30a Core wire 30b Coating 30c Lead wire protective material 30d Restraint portion 30e Unrestraint portion 40 Electrode head 41 Carbon sheet 41a Front surface 41b Back surface 41c Silver-silver chloride coating film (electrode coating film)
42 Electrode disk 42a Front surface 42b Back surface 42c Lead wire accommodating part 42d Identification mark 50 Adhesive pad 51 Adhesive gel 51a One side 52 Gel holding sheet (base material sheet)
52a Opening (Mounting hole)
52b Tab 61 Adhesive pad protective film 61a First adhesive pad protective film 61b Second adhesive pad protective film 61c Perforation 61d Separation edge 70 Adhesive pad sheet

Claims (1)

An adhesive pad for holding a bioelectrode on one side and an adhesive gel for attaching the other side to a subject; and a base sheet for holding the adhesive gel;
In an adhesive pad sheet comprising a protective film for holding an adhesive pad,
The base sheet has an attachment hole for holding the bioelectrode with the adhesive gel from the base sheet side, and a tab on which the adhesive gel is not laminated,
The protective film covers the base sheet side of the adhesive pad, covers the adhesive gel side of the adhesive pad, and covers the adhesive gel side of the first protective film that sticks to the adhesive gel from the mounting hole. A second protective film to be attached,
The first protective film and the second protective film are formed in such a size that the entire adhesive pad can be disposed in an in-plane position thereof, and the adhesive pad includes the first protective film and the second protective film. Is located in the in-plane position,
The adhesive pad sheet for bioelectrodes is characterized in that the adhesive gel is peeled off from the skin by picking up the tab of the base sheet.

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