JP2007050033A - Electrocardiography electrode - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrocardiography electrode permitting easy and speedy attachment of a plurality of electrodes. <P>SOLUTION: The electrocardiography electrode is for measuring the electrocardiogram by connecting lead wires, and comprises electrodes 100a-100c disposed in respective areas of a sheet-like base material 100, which is formed in such a way as separable into a plurality of areas. The plurality of electrodes 100a-100c can be collectively attached when the electrodes are integrated into one, and it is also easy to separate the integrated electrodes from one another after the electrodes are attached to be rearranged. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electrocardiogram measurement electrode, and more particularly to an electrocardiogram measurement electrode that is easy to wear.

  Conventionally, an electrocardiogram has been widely used for medical treatment of heart diseases and the like. In general, an electrocardiogram recorded in a hospital or the like is composed of 12 types of induced waveforms called standard 12-lead waveforms, and is measured and recorded by attaching electrodes to the wrist, ankle and chest of the subject.

  On the other hand, an electrocardiogram is used also in emergency medical care. In this case, unlike a normal case, it is required to perform quick measurement corresponding to various places and situations. For example, in situations where there is an urgent need such as an accident site or an ICU, it is necessary to perform measurement by attaching an electrocardiogram electrode in parallel with other first aid. In such an urgent situation, it is very important to be able to perform measurement immediately without taking time to start measurement as well as measurement accuracy.

However, since the electrocardiogram represents a potential difference, it is necessary to wear at least two electrodes. In general, it is necessary to wear at least three electrodes in monitor guidance used for electrocardiogram measurement in an emergency.
Conventionally, these electrodes are all independent, and it has been necessary to connect a lead wire to each electrode after mounting each electrode at a predetermined position on the body surface.

JP-A-63-238851 (FIG. 1, FiG. 3)

  In order to attach a plurality of electrodes necessary for standard 12-lead measurement together in an appropriate position, Patent Document 1 proposes an electrocardiogram sensor sheet in which 10 electrodes and their lead wires are embedded in one sheet. is doing.

  However, the electrocardiogram sensor sheet described in Patent Document 1 is intended to attach a large number of electrodes to a predetermined site that is dispersed widely, and lead wires connected to the individual electrodes are embedded in the sheet. Therefore, it has a size enough to cover the entire chest. Therefore, it is not easy to align and attach all the electrodes so as to correspond to the planned mounting positions. In Patent Document 1, it is also described that the patches 42 to 45 are provided as an assist of the alignment, but the alignment is still not easy because the sheet is large.

In addition, since a conductive adhesive gel is usually provided on the portion of the electrode that contacts the body surface, the gel may stick to other portions when a large sheet is attached.
Such a problem can occur even in a situation where the subject is resting with both hands. Therefore, it is not suitable for quick mounting in an emergency.

  The present invention has been made in view of the above-described problems of the prior art, and provides an electrode for electrocardiogram measurement capable of easily and quickly mounting a plurality of electrodes.

  That is, the gist of the present invention is an electrocardiogram measurement electrode for measuring an electrocardiogram by connecting a lead wire, the sheet-like base material formed separably into a plurality of regions, and each of the plurality of regions A plurality of conductive sensors provided to cover the portions of the conductive sensors penetrating the base material and the portions of the plurality of conductive sensors that are exposed on the surface that comes into contact with the living body when the base material is attached. An electrode for electrocardiogram measurement comprising an adhesive material portion.

  Another gist of the present invention resides in an electrocardiogram measuring apparatus for measuring an electrocardiogram by connecting a lead wire to the electroconductive sensor of the electrocardiogram measuring electrode of the present invention.

  Thus, according to the present invention, a plurality of electrodes can be easily mounted by integrating a plurality of sheet-like electrodes so as to be easily separated. In addition, since the lead wires are not embedded in the sheet and are connected after the electrodes are mounted, the sheet can be reduced in size, contributing to quick mounting.

Hereinafter, the present invention will be described in detail based on its official embodiments with reference to the drawings.
1A and 1B are diagrams showing a configuration example of an electrocardiogram measurement electrode according to an embodiment of the present invention. FIG. 1A is a top view and FIG. 1B is a bottom view (viewed from the back).

  In the electrocardiogram measurement electrode 100 shown in FIG. 1, three electrodes 100a to 100c are integrally formed on a common base material. The substrate is composed of a flexible and non-conductive resin sheet. And the perforated cut | notch 150a-150c is provided in the part between the electrodes of a base material so that each electrode 100a-100c can be isolate | separated easily.

  A hole 120 is provided in the approximate center of the electrode 100. The hole 120 has a directional shape (a shape in which the same shape appears only once when the electrode 100 is rotated in its main plane). Thereby, after mounting | wearing with the electrode 100, after removing once for the purpose of treatment etc., when mounting | wearing again without separating each electrode, it can utilize for the position alignment for mounting | wearing at the same position as the beginning. Further, the hole 120 is formed at a position (not necessarily the center) where the width of the portion where the cut is to be made is narrowed, so that the connection portion of each electrode 100a to 100c (the portion where the cut 150a to 150c is provided) Has an effect of shortening and facilitating separation. The hole 120 is not essential.

  In each of the electrodes 100a to 100c, conductive sensors 110a to 110c (which realize functions as individual electrodes) are arranged. As will be described later, the sensors 110a to 110c have a substantially inverted T-shaped cross section, and a lead wire (not shown) is attached to a columnar portion (a portion visible in FIG. 1A). In the present embodiment, the sensors 110a to 110c are formed by coating the ABS base material with Ag / AgCl, so that the sensor does not appear during X-ray simple imaging. For example, when diagnosing the chest by X-ray CT But there is no need to remove the electrodes.

  FIG. 1B shows the configuration of the side that actually contacts the body surface (also referred to as the back surface or the mounting surface). Adhesive is applied to the entire mounting surface of the base material, and conductive gels 130a to 130c having adhesive properties are provided so as to cover the sensors 110a to 110c. The mounting surface is covered with liners 180a and 180b made of a transparent film such as a PET film. In the present embodiment, the liner is divided into two parts 180a and 180b, and the liners 180a and 180b overlap each other at the center part, so that the liner can be easily peeled off during mounting. However, such a configuration is not essential, and the front surface of the mounting surface may be covered with a single liner.

FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG. 1A, and shows the configuration of the sensor 110a and its surroundings.
As shown in FIG. 2, in the present embodiment, the sensor 110 a has a shape like a thumbtack upside down, and the cross section has a substantially inverted T shape. At the time of measurement, one end of the lead wire is attached to the columnar portion protruding from the base material to the surface.

A method for mounting the electrocardiogram measurement electrode of this embodiment will be described with reference to FIG.
First, the liners 180a and 180b are removed. Then, the electrode 100 is attached to a predetermined position on the body surface (for example, on the sternum) (FIG. 3A). In addition, you may affix on the body surface, peeling liner 180a, 180b.

  Next, marking is performed on the body surface using the holes 120 as necessary (FIG. 3B). Then, the lead wire 190 connected to the monitor device is connected to the sensors 110a to 110c of the individual electrodes 100a to 100c.

FIG. 4 is a diagram for explaining alignment at the time of remounting using the holes 120.
In the field of emergency medical care, for example, after measuring an electrocardiogram for seeking a doctor's judgment, it may occur that the electrode needs to be peeled off once for first aid. In such a case, when the electrocardiogram is measured again after the first aid is completed, it is desirable to reattach it at the same position as the initial wearing position. This is because the waveform to be measured changes when the electrode position changes.

  When the hole 120 is provided in the electrode, the marking as shown in FIG. 3B is performed at an arbitrary time from the mounting to the removal. As a result, even after the electrode is peeled off as shown in FIG. 4A, the mark 160 having the shape of the hole 120 remains on the body surface.

  As described above, the hole 120 has a directional shape. Therefore, at the time of remounting, the electrode can be remounted at a position substantially equal to the initial mounting position by aligning the shape of the hole 120 of the electrode 100 with the shape of the mark 160 (FIG. 4). (C)). Here, “remounting” includes not only the case where the peeled electrode itself is mounted again, but also the case where the electrode is replaced with a new electrode.

FIG. 5 is a diagram illustrating an electrode separation method.
As shown to Fig.5 (a), each electrode can be isolate | separated from another electrode by tearing the part of the notches 150a-150c. The separated electrode can be moved to another position on the body surface and used again (FIG. 5B).

  In the present embodiment, since the individual electrodes are integrally formed so as to be separable, in a situation where it is not desired to take time and effort such as in an emergency, the electrodes are collectively mounted at an arbitrary position where the electrocardiogram can be measured, (Alternatively, if it takes time to wear) individual electrodes can be separated and moved to a more desirable position.

FIG. 6 is a diagram showing an example of the mounting position when the electrocardiogram measurement electrodes of this embodiment are integrated and the mounting position of each electrode after separation.
Here, since the electrocardiogram measurement electrode of the present embodiment has a configuration in which three electrodes are integrated, it is assumed that measurement is performed using a tripolar induction method. In this case, the electrode 100a is used as the left (L) electrode, the electrode 100b is used as the right (R) electrode, and the electrode 100c is used as the indifferent electrode (N).

  FIG. 6A shows an example in which the electrode 100c is attached to the sternum body midline when integrated, and the center of the electrode 100 (the hole 120 when there is the hole 120) is attached to the center of the sternum body. After separating the individual electrodes, each electrode is moved to a more preferable position (the electrode 100a is near the left subclavian, the electrode 100b is near the right subclavian, and the electrode 100c is near the lower left rib). Good electrocardiogram measurement becomes possible.

  Similarly, FIG. 6B and FIG. 6C show an example in which the electrode 100a or 100b is integrally mounted in accordance with the mounting position in the tripolar induction method. In this case, after separation, the electrodes 100b and 100c (in the case of FIG. 6B) or the electrodes 100a and 100c (in the case of FIG. 6C) may be moved. Note that the mounting position shown in FIG. 6 is merely an example, and it can be mounted at any other position as long as good electrocardiogram measurement is possible.

  At the emergency site, for example, in order to ask a doctor about the need for defibrillation, the electrocardiogram measurement is first performed in an integrated state, and then if there is a need for defibrillation, a defibrillation pad (usually with the right shoulder) Wear a device near the left flank and perform defibrillation. At this time, if an integrated electrode is mounted at the position shown in FIGS. 6A and 6B, it does not become an obstacle when the defibrillation pad is mounted, and it is not necessary to remove it.

  When it is determined that defibrillation is not necessary, measurement may be continued in an integrated state as it is, or the electrodes are separated to make diagnostic accuracy more reliable, and the normal three-point guidance method is used. It can also be moved to the electrode mounting position.

  As described above, in this embodiment, downsizing is realized by emphasizing ease of mounting and integrally forming only the electrode portion. According to the inventor's experiment, measurement was possible with a configuration of FIG. Therefore, even with one hand, it is possible to quickly attach a plurality of electrodes. Furthermore, since the plurality of electrodes are integrally formed so as to be separable, it is possible to easily cope with the case where measurement with higher accuracy is required or when it is desired to measure the induction waveform with different electrode arrangements.

  In addition, by providing a hole having directionality in the central portion, even when remounting is necessary, it is possible to remount at a position substantially equal to the initial mounting position.

(Other embodiments)
In the above-described embodiment, only the configuration in which the electrodes are not completely separated and the notches 150a to 150c are provided in the connection portion between the electrodes has been described.
However, as long as the electrodes can be mounted together, there may be a portion where the electrodes are completely separated. For example, in the configuration of FIG. 1, any one of the cuts 150a to 150c may be completely cut off.

  Further, in the slit, the ratio between the connected portion and the disconnected portion does not need to be uniform over the entire length, and it is possible to facilitate separation by increasing the number of disconnected portions at the end portion. Alternatively, when the width of the connecting portion is large, such as when there is no hole, it is possible to largely cut the central portion and provide a portion where only the end portion is connected (see FIG. 7B described later).

  Further, in the above-described embodiment, an electrode having three substantially circular shapes formed around a vertex of a triangle and a part of which overlaps has been described, but the electrode outer shape when integrated can be arbitrarily determined. . For example, as shown in FIG. 7A, a heart shape generally used as a mark representing the heart can be used. In this case, the orientation at the time of wearing (the direction in which the heart shape can be correctly viewed as shown in the figure). ) Can be intuitively recalled by the surgeon. In addition, since there is an acute angle portion, when it is necessary to peel off the electrode, there is an effect that it is easier to peel off than the other portion by peeling off the acute angle portion.

Moreover, in the above-described embodiment, it is assumed that the three-electrode induction method with a small number of electrodes is used among the induction methods generally used as the monitor induction. Even if it exists, this invention is applicable similarly. An electrode that can be used as a spare electrode may be included.
For example, in FIG. 7B, the outer shape is the same as in FIG. 7A, but four electrodes are integrated. In this case, one can be used as a spare.

It is a figure which shows the structural example of the electrode for electrocardiogram measurement which concerns on embodiment of this invention. It is A-A 'sectional drawing of FIG. It is a figure explaining the mounting method of the electrode for electrocardiogram measurement concerning an embodiment. In the electrocardiogram measurement electrode according to the embodiment, a remounting method using a hole 120 is described. It is a figure explaining the method to isolate | separate each electrode in the electrode for electrocardiogram measurement which concerns on embodiment. It is a figure which shows the example of the mounting position at the time of integration of the electrode for electrocardiogram measurement which concerns on embodiment, and the mounting position of each electrode after isolation | separation. It is a figure which shows the example of the electrode for electrocardiogram measurement which concerns on other embodiment.

Claims (8)

An electrode for measuring an electrocardiogram for measuring an electrocardiogram by connecting a lead wire,
A sheet-like base material formed to be separable into a plurality of regions;
A conductive sensor provided in each of the plurality of regions and penetrating the substrate;
An electrocardiogram measurement comprising: a plurality of conductive adhesive members provided so as to individually cover portions of the plurality of conductive sensors that are exposed on a surface of the base that comes into contact with a living body when worn. Electrode.   The electrocardiogram measurement electrode according to claim 1, wherein the base material has notches provided between the plurality of regions.   The electrocardiogram measurement electrode according to claim 1 or 2, wherein the base material is provided with a hole having a direction.   The electrocardiogram measurement electrode according to claim 3, wherein the hole is disposed at a position that narrows a width of a site where the cut is provided.   2. The substrate according to claim 1, wherein the substrate has a shape reminiscent of an orientation when the electrocardiogram measurement electrode is mounted, and the plurality of regions are arranged corresponding to the orientation. 5. The electrocardiogram measurement electrode according to any one of items 4.   6. The electrocardiogram measurement electrode according to claim 5, wherein the substrate has a substantially heart shape.   The electrocardiogram measurement electrode according to any one of claims 1 to 6, wherein the plurality of regions include a region provided as a reserve.   An electrocardiogram measurement apparatus that performs electrocardiogram measurement by connecting a lead wire to the conductive sensor of the electrocardiogram measurement electrode according to any one of claims 1 to 6.

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