JP2014087542A - Electrode for biological information measurement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrode for biological information measurement capable of preventing dehydration of an electrolyte gel covering an electrode without being put into a packaging bag.SOLUTION: A base sheet 200 includes a substrate 210, an electrode 240 provided on the substrate 210, an electrolyte gel 250 provided on front surface side of the electrode 240 to cover the electrode 240, and an adhesive layer 230. A release sheet 300 has a welded layer 320, and the welded layer 320 is thermally welded to the base sheet 200 so as to seal the electrolyte gel 250.

Description

  The present invention relates to a biological information measuring electrode that is worn on a subject and measures biological information such as an electrocardiogram.

  Conventionally, as this type of biological information measuring electrode, there is one disclosed in Patent Document 1, for example. This type of biological information measuring electrode is provided with a pressure-sensitive adhesive, a conductive and adhesive electrolyte gel, and an electrode on a nonwoven fabric, and is attached to the chest of a subject. Then, the electrocardiogram signal of the subject is received by the electrode and transmitted to the electrocardiogram apparatus.

  Further, there is an electrocardiogram sensor sheet in which a plurality of electrodes are provided on one sheet so that the plurality of electrodes can be attached to the chest at a stretch. This type of electrocardiogram sensor sheet is described in, for example, Patent Documents 2-9. By using this type of electrocardiogram sensor sheet, it is possible to quickly and easily measure an electrocardiogram because a plurality of electrodes can be attached to the chest at once, compared to a case where a plurality of electrodes are separately attached to the chest. become. Therefore, it is very convenient when an electrocardiogram needs to be measured urgently.

  Moreover, although the cable corresponding to each site | part must be connected to an electrode, if an electrocardiogram sensor sheet is used, there exists an advantage which can prevent the misdiagnosis by misconnection. In other words, in the electrocardiogram sensor sheet, the leads drawn from the electrodes are bundled together and connected to the electrocardiogram device collectively via the connector, so compared with the case where each electrode and the electrocardiogram device are connected one by one Thus, a wiring mistake between each electrode and the electrocardiogram apparatus can be eliminated.

JP 2001-299711 A Japanese Unexamined Patent Publication No. 63-238851 JP 2001-269322 A JP-A-6-245915 Japanese Utility Model Publication No.2-114011 JP-A-7-289528 Japanese National Patent Publication No. 11-513484 Japanese National Patent Publication No. 11-510073 JP 2010-75691 A

  By the way, in the biological information measuring electrode, generally, an electrolyte gel is provided on the surface side of the electrode so as to cover the electrode, and the body and the electrode are electrically connected via the electrolyte gel. . That is, when the electrolyte gel exchanges ions with the skin, an electric signal is transmitted between the body and the electrode.

  Here, since the electrolyte gel cannot be ion-exchanged if it is dried, the biological information measurement electrode is sealed in a packaging bag having moisture retention properties such as aluminum in order to prevent the electrolyte gel from drying. Shipped. And in use, it takes out from a packaging bag and affixes it to a subject's chest.

  By the way, since such a biological information measuring electrode is generally a disposable type, there is a drawback that a packaging bag is generated as garbage every time it is used. In particular, in an electrocardiogram sensor sheet provided with a plurality of electrodes, the size of the electrocardiogram sensor sheet is the same as the size of the chest, so the size of the packaging bag generated as garbage is also quite large. For example, when an electrocardiogram sensor sheet is used in an ambulance, a packaging bag is generated as a large garbage in a narrow space in the ambulance, which may be an obstacle to the work of emergency personnel.

  In addition, when attaching the biological information measurement electrode to the subject, the user of the biological information measurement electrode first tears the packaging bag and takes out the biological information measurement electrode, and then the sheet body (base A plurality of operations such as peeling the release sheet bonded to the sheet from the sheet main body and then sticking the sheet main body to the chest of the subject are necessary. Here, if the operation of taking out the biological information measurement electrode from the packaging bag can be eliminated, the time until the biological information measurement electrode is attached to the subject can be shortened.

  An object of this invention is to provide the electrode for biological information measurement which can prevent the drying of the electrolyte gel which covers an electrode, without putting in a packaging bag.

One aspect of the biological information measuring electrode of the present invention is:
A base material, an electrode provided on the base material, an electrolyte gel provided on the surface side of the electrode so as to cover the electrode, the same surface side as the electrode and the electrolyte gel on the base material, and An adhesive layer provided so as not to prevent contact between the electrolyte gel and the body, and a base sheet adhered to the body by the adhesive layer;
A release sheet that is bonded to the base sheet and peeled off from the base sheet when the base sheet is attached to the body;
A biological information measuring electrode comprising:
The release sheet has a weld layer,
The welding layer is thermally welded to the base sheet so as to seal the electrolyte gel.

  According to the present invention, since the electrolyte gel is hermetically sealed by the welding of the release sheet, the electrolyte gel can be prevented from drying without being put in a packaging bag.

External view showing an electrocardiogram sensor sheet of an embodiment Diagram showing the outer shape of the base sheet The figure which shows the state which affixed the base sheet on the subject's body Sectional view showing the laminated structure of the ECG sensor sheet Sectional view showing the state of thermal welding The figure which showed the position which performs heat welding (heat seal) The figure which showed the position which performs heat welding (heat seal) Schematic plan view showing electrodes for measuring biological information according to another embodiment

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(1) Overall Shape FIG. 1 is an external view showing an electrocardiogram sensor sheet (hereinafter abbreviated as a sensor sheet) according to an embodiment of the present invention. The sensor sheet of the present embodiment is a sensor sheet used for measuring a 12-lead electrocardiogram. In the embodiment, an example in which the present invention is applied to a sensor sheet used for measuring a 12-lead ECG will be described. However, the present invention is not limited to a sensor sheet used for measuring a 12-lead ECG Can also be applied, and can be widely applied to sensor sheets provided with an electrolyte gel covering the surface of the electrode.

  In the following description, the left-right direction is defined by the direction when viewed from the front side of the sensor sheet. Therefore, when looking at the sensor sheet from the subject to which the sensor sheet is attached (especially when looking at the sensor sheet portion attached to the front of the subject's chest), Note that the opposite is true.

  The sensor sheet 100 includes a base sheet 200 and a release sheet 300. The release sheet 300 is attached to the back side of the base sheet 200. The release sheet 300 is peeled from the base sheet 200 by the user when the base sheet 200 is attached to the subject's chest.

  FIG. 2 shows the outer shape of the base sheet 200. FIG. 3 shows a state where the base sheet 200 is attached to the body of the subject.

  As illustrated in FIG. 2, the base sheet 200 includes a strip-shaped main trunk AR0 and branch portions including a plurality of branches AR1, AR2, and AR3 branched in an oblique direction from the main trunk AR0. The strip-shaped main trunk AR0 is a portion that is attached along the center of the body, and is formed continuously in the vertical direction. Each branch AR1, AR2, AR3 of the branch portion is formed in a direction parallel to each other or in a direction intersecting with each other at an acute angle. That is, the branches AR1, AR2, AR3 are formed in a substantially uniform direction. Electrodes are arranged in the vicinity of the ends of the branches AR1, AR2, AR3.

  In other words, the branches AR1 to AR3 are formed in the same direction or in a direction intersecting with an acute angle with respect to the peeling direction of the peeling sheet 300 (FIG. 1) from the base sheet 200.

  As a result, the release sheet 300 can be smoothly peeled from the base sheet 200. As a result, wrinkles are less likely to occur in the base sheet 200 during sticking, and each electrode can be quickly and accurately attached to a predetermined position on the body.

  In the case of the present embodiment, the base sheet 200 is provided with ten electrodes. These ten electrodes are provided at positions R, L, V1, V2, V3, V4, V5, V6, N, and F in FIGS. In practice, the R, L, V1, V2, V3, V4, V5, V6, N, and F patterns in the figure are the base sheet so that the user of the sensor sheet 100 can know where each electrode is located. 200 is printed. In the following description, for convenience, electrodes provided at positions R, L, V1, V2, V3, V4, V5, V6, N, and F are referred to as electrodes R, L, V1, V2, V3, These will be referred to as V4, V5, V6, N, and F.

  Each of the electrodes V1 to V6 is disposed at a general chest guiding position. Electrodes R, F, and L are related electrodes for limb guidance. The electrode R is disposed near the base of the right arm. The electrode L is disposed in the vicinity of the left arm. The electrode F is disposed in the vicinity of the left leg. The electrode N is disposed in the vicinity of the electrode F. The electrode N is an indifferent electrode (also referred to as a reference electrode).

  A 12-lead electrocardiogram is detected by connecting the base sheet 200 to an electrocardiograph.

  Next, the positional relationship between the electrodes R, L, V1, V2, V3, V4, V5, V6, N, and F on the base sheet 200 will be described with reference to FIGS.

  The electrodes R and L are arranged on the first branch AR1 of the base sheet 200. The electrode F is disposed on the second branch AR2. In the third branch AR3, electrodes V1 to V6 are arranged as a plurality of electrodes for performing chest guidance.

  On the main trunk AR0 of the base sheet 200, a center line L1 for performing alignment for attaching to the body is printed. Thus, the user can attach the base sheet 200 to an accurate position by aligning the center line L1 with the center of the body of the subject. On the base sheet 200, an arrow L2 is printed from the electrode R toward the electrode F to indicate a peeling direction to the user. Further, the release sheet 300 has a knob 301 protruding in the direction away from the base sheet 200 in the vicinity of the first related electrode (that is, the electrode R).

  Further, the release sheet 300 is bonded to the base sheet 200 so as to fill at least the space between the plurality of branches AR1, AR2, AR3. Specifically, the release sheet 300 has a substantially rhombus shape that is not cut from the tips of the plurality of branches AR1, AR2, AR3 of the base sheet 200 in the direction of the main trunk AR0. That is, unlike the base sheet 200, the release sheet 300 has a substantially rhombus shape, not a branched shape. As a result, the base sheet 200 can be peeled off from the release sheet 300 more smoothly than the release sheet 300 having a branched shape like the base sheet 200. In addition, the holding force of the release sheet 300 makes it difficult for the base sheet 200 to roll at the time of release, and the base sheet 200 can be accurately attached at a predetermined position.

  Next, an operation when the base sheet 200 is attached to the body of the subject will be described.

  The peeling of the peeling sheet 300 from the base sheet 200 and the sticking of the base sheet 200 to the body start from a position corresponding to the first related electrode (that is, the electrode R) arranged at the upper left corner of the base sheet 200. To the lower right corner. Peeling and sticking are performed by, for example, sticking the base sheet 200 to the body at the same time that the peel sheet 300 is peeled from the base sheet 200, similarly to sticking a bandage to the body. As a result, the base sheet 200 can be attached to the body with one action while interlocking with the peeling of the release sheet 300, so that the release and attachment can be easily performed.

  This will be specifically described. First, in a state where the center line L1 of the base sheet 200 is aligned with the center of the body of the subject, the corners are peeled off from the base sheet 200 to the release sheet 301 while pinching the knob 301 with a finger, and the position of the electrode R is set on the body. paste. Next, the base sheet 200 is affixed to the body while peeling the release sheet 300 from the base sheet 200 by pulling the release sheet 300 in the lower right direction indicated by the arrow L2.

  In this way, the base sheet 200 is formed in a strip-shaped main trunk AR0 and a plurality of branches that are branched in an oblique direction from the main trunk AR0 and directed in directions parallel to each other or intersecting each other at an acute angle. With the configuration having the branches AR <b> 1 to AR <b> 3, the release sheet 300 can be smoothly peeled from the base sheet 200. As a result, each electrode can be quickly and accurately attached to a predetermined position on the body.

(2) Structure for sealing the electrolyte gel FIG. 4 is a cross-sectional view showing a laminated structure of the sensor sheet 100 of the present embodiment.

  The base sheet 200 includes a substrate 210, a polyethylene layer 220, and an adhesive layer 230. The base sheet 200 includes an electrode 240 (corresponding to the electrodes R, L, V1, V2, V3, V4, V5, V6, N, and F described above) and an electrolyte gel provided so as to cover the electrode 240. 250. The base material 210 is a nonwoven fabric, for example. The substrate 210 may be a heat resistant resin film such as polyethylene terephthalate.

  The laminated structure of the base sheet 200 is not limited to that shown in FIG. However, the base sheet 200 includes at least a base material, a plurality of electrodes provided on the base material, an electrolyte gel provided on the surface side of the electrode so as to cover the electrodes, a plurality of electrodes on the base material, and And an adhesive layer provided on the same surface side as the electrolyte gel.

  The release sheet 300 includes a moisture retention layer 310 and a weld layer 320. The moisturizing layer 310 is formed of a material that does not transmit moisture, such as polyethylene terephthalate. For the moisture retaining layer 310, a material having excellent heat resistance is selected. That is, the moisture retaining layer 310 may be any material that does not transmit moisture and is excellent in heat resistance, and may be aluminum, for example. Here, the material having excellent heat resistance means a material that can withstand heat when heat sealing described later is performed. That is, the moisture retention layer 310 is formed of a material that can withstand the melting temperature of the weld layer 320.

  The welding layer 320 is made of polyethylene. The weld layer 320 is not limited to polyethylene, and a general material used for heat sealing can be used. For example, polypropylene or vinyl chloride may be used. In this case, if the polyethylene layer 220 of the base sheet 200 is also changed to the same material as this, the adhesion with the welding layer 320 can be improved.

  The base sheet 200 and the release sheet 300 are heat-welded at a position where the electrolyte gel 250 can be sealed. FIG. 5 shows this state. As the welded layer 320 of the release sheet 300 is thermally welded to the polyethylene layer 220 of the base sheet 200, the electrolyte gel 250 is sealed. The peel seal 300 is adhered to the base sheet 200 by the adhesive layer 230 at a position other than the welding position.

  Here, only the adhesion of the adhesive layer 230 can prevent the deviation of moisture from the electrolyte gel 250 to some extent. But that is not enough. In the present embodiment, the electrolyte gel 250 is hermetically sealed by heat welding, that is, heat sealing, so that deviation of moisture from the electrolyte gel 250 can be reliably prevented. As a result, the deviation of moisture from the electrolyte gel 250 can be prevented without packaging the sensor sheet 100 with a packaging bag.

  6 and 7 are views showing positions for performing heat welding (heat sealing). The one-dot chain line in the figure indicates the heat welding position. In the example of FIG. 6, heat welding is performed at the edge of the base sheet 200. In the example of FIG. 7, heat welding is performed around the electrolyte gel of each electrode.

  Incidentally, the larger the area of heat welding, the more difficult it is to peel off the release sheet 300 from the base sheet 200. Therefore, considering this, the position to be thermally welded can be selected as the minimum position where the electrolyte gel 250 can be sealed. preferable.

  As described above, according to the present embodiment, the electrode 240 is provided without being put in the packaging bag by providing the welding layer 320 on the release sheet 300 and performing heat sealing so as to seal the electrolyte gel 250. The electrocardiogram sensor sheet 100 that can prevent the electrolyte gel 250 covering the electrode from being dried can be realized.

  Further, since the electrocardiogram sensor sheet 100 does not need to be put in a packaging bag, the lead wire drawn out from the electrocardiogram sensor sheet 100 can be connected in advance to the electrocardiogram apparatus, and the electrocardiogram measurement can be performed promptly. Will be able to do. That is, the conventional sensor sheet needs to be connected to the electrocardiogram apparatus after the sensor sheet is taken out from the packaging bag immediately before the electrocardiogram measurement in order to prevent the electrolyte gel from drying. That is, it is disadvantageous when an electrocardiogram is to be measured promptly, such as in an emergency. On the other hand, the electrocardiogram sensor sheet 100 according to the present embodiment can perform electrocardiogram measurement more quickly than the conventional electrocardiogram sensor sheet.

  In the above-described embodiment, the case where the present invention is applied to a sensor sheet used for measuring a 12-lead electrocardiogram has been described. However, the present invention can be widely applied to an electrocardiogram sensor sheet for performing an electrocardiogram examination.

  Furthermore, in the above-described embodiment, when the present invention is applied to an electrocardiogram sensor sheet in which a plurality of electrodes 240 are provided on the base sheet 200 and the plurality of electrodes 240 can be attached to the chest of the subject at once. However, the present invention is not limited to this, and can be widely applied to electrodes for measuring biological information.

  The present invention is also applicable to a biological information measuring electrode of the type shown in FIG. 8, for example. In FIG. 8, the dotted line indicated by a circle indicates the position of the electrode 240 and the electrolyte gel 250, and the alternate long and short dash line indicates the welding position. FIG. 8A shows a biological information measurement electrode in which one electrode is provided on one base sheet 200. In the biological information measurement electrode of FIG. 8A, the user peels off the release sheet 300 from the base sheet 200 for each electrode 240 and then attaches each base sheet 200 to the subject. In FIG. 8A, the release sheet 300 is divided into three parts from the beginning. However, the release sheet 300 may be one connected release sheet, or may be divided by putting a perforation in one release sheet. FIG. 8B shows a biological information measurement electrode of a type in which a plurality of electrodes are provided on one base sheet 200 at the time of shipment, but each electrode is attached separately when attached to a subject. In the biometric information measurement electrode of FIG. 8B, after the user peels the release sheet 300 from the base sheet 200, the user separates the base sheet 200 (in three) by cutting along the perforation, and then Each base sheet 200 is adhered to the subject.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be applied to an electrode for biological information measurement using an electrolyte gel.

100, 400 ECG sensor sheet 200, 500 Base sheet 210 Base material 220 Polyethylene layer 230 Adhesive layer 240 Electrode 250 Electrolyte gel 300 Release sheet 310 Moisturizing layer 320 Welded layer AR0 Main part AR1, AR2, AR3 Branches R, L, V1, V2 , V3, V4, V5, V6, N, F electrodes

Claims (6)

A base material, an electrode provided on the base material, an electrolyte gel provided on the surface side of the electrode so as to cover the electrode, the same surface side as the electrode and the electrolyte gel on the base material, and An adhesive layer provided so as not to prevent contact between the electrolyte gel and the body, and a base sheet adhered to the body by the adhesive layer;
A release sheet that is bonded to the base sheet and peeled off from the base sheet when the base sheet is attached to the body;
A biological information measuring electrode comprising:
The release sheet has a weld layer,
The welding layer is thermally welded to the base sheet so as to seal the electrolyte gel.
Biological information measurement electrode. The weld layer is welded to the base sheet at the edge of the base sheet,
The biological information measuring electrode according to claim 1. The weld layer is welded to the base sheet around the electrolyte gel of each electrode,
The biological information measuring electrode according to claim 1. The weld layer is polyethylene,
The biological information measuring electrode according to any one of claims 1 to 3. The release sheet further has a moisturizing layer,
The moisturizing layer is formed of a material that does not transmit moisture and can withstand the melting temperature of the weld layer.
The biological information measuring electrode according to any one of claims 1 to 4. The base sheet is provided with a plurality of electrodes,
The base sheet is
A belt-shaped main executive,
It has a plurality of branches branched obliquely from the main trunk, and the electrodes are arranged near the ends of the branches, and the branches are directed in a direction parallel to each other or in a direction intersecting at an acute angle. The branch part formed,
The biological information measuring electrode according to any one of claims 1 to 5, further comprising:

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