Electrocardiogram signal measuring belt

Abstract

To provide an electrocardiographic signal measuring belt that can measure a biological signal in a stable state independently of a difference in environmental moisture by enhancing signal conductivity between an electrocardiographic electrode and a skin horny layer, and evaluate a beating state of the heart correctly.SOLUTION: An electrocardiographic signal measuring belt includes a belt body 1 mounted around the chest of a human body, and a plurality of electrocardiographic electrodes 36A, 36B, and 36C held by an electrode holding part 11 provided to the belt body 1. The electrode holding part 11 includes a water absorption material having a water retention function.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electrocardiogram signal measuring belt that measures an electrocardiogram signal accompanying heartbeat. [Background technology]

[0002] This type of electrocardiogram signal measuring belt is known, for example, from Patent Document 1. The biosensor belt (electrocardiogram signal measuring belt) of Patent Document 1 is composed of a sensor belt (belt body) worn around the chest, and three electrocardiogram electrodes provided on the skin contact surface of the sensor belt. One of the electrocardiogram electrodes is a common electrode (installed electrode) and is placed on the back of the user, and the remaining two electrocardiogram electrodes are placed on the left and right sides of the chest. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-253610 A Summary of the Invention [Problem to be solved by the invention]

[0004] When using the biosensor belt of Patent Document 1, it is necessary to attach the electrocardiogram electrodes to the skin surface to increase the conductivity between the electrocardiogram electrodes and the stratum corneum of the skin, but the measurement results are likely to vary depending on the environmental humidity and the position of the electrocardiogram electrodes. In particular, during the cold season when the environmental humidity is low and the environment is dry, the conductivity between the electrocardiogram electrodes and the stratum corneum of the skin is likely to decrease due to the lack of sweating from the human body. As a result, it was not possible to measure the electrocardiogram signals in a stable state with little noise, and the heartbeat status could not be properly evaluated.

[0005] An object of the present invention is to provide an electrocardiogram signal measuring belt that can increase the signal conductivity between the electrocardiogram electrodes and the stratum corneum of the skin, even in low environmental humidity conditions, thereby enabling stable measurement of biological signals. [Means for solving the problem]

[0006] The electrocardiogram signal measurement belt of the present invention comprises a belt body 1 for wearing on a human body, an electrode holding part 11 provided on the belt body 1, and a plurality of electrocardiogram electrodes 36 held by the electrode holding part 11. The electrode holding part 11 is characterized in that it is configured to include a water-absorbent material having a water-retaining function.

[0007] The electrode holding portion 11 includes a sheet material arranged so as to cover the skin contact side of the electrocardiogram electrode 36. This sheet material is made of a water-absorbent material.

[0008] The electrode holding portion 11 is fixed to the skin contact surface side of the belt body 1 and has a pocket body 16 formed in a pocket shape into which each electrocardiogram electrode 36 can be inserted and removed. This pocket body 16 is configured to contain a water absorbent material.

[0009] The electrode holding section 11 has a pocket body 16 fixed to the skin contact surface side of the belt body 1 and formed in a pocket shape into which each electrocardiogram electrode 36 can be inserted and removed. A plurality of electrode windows 17 are opened on the skin contact surface side of the pocket body 16 to individually expose the plurality of electrocardiogram electrodes 36, and when each electrocardiogram electrode 36 is housed in the pocket body 16, the skin contact surface side of each electrocardiogram electrode 36 is exposed from each electrode window 17, and the skin contact surface side of each electrocardiogram electrode 36 is covered by an electrode cover 18 detachably attached to the pocket body 16. This electrode cover 18 is made of a water absorbent material.

[0010] Each of the pocket body 16 and the electrode cover 18 is made of a water-absorbent material.

[0011] A plurality of electrode windows 17 are opened on the skin contact surface side of the pocket body 16, through which a plurality of electrocardiogram electrodes 36 are individually exposed. When each electrocardiogram electrode 36 is housed in the pocket body 16, the skin contact surface side of each electrocardiogram electrode 36 is exposed from each electrode window 17.

[0012] The electrode unit 2 is housed in the electrode holding section 11. The electrode unit 2 includes a base mat 34, an electrode mat 35 fixed to the base mat 34, and a plurality of electrocardiogram electrodes 36 fixed to the skin contact surface side of each electrode mat 35. The base mat 34 and the electrode mat 35 are each made of a water absorbent material. Effect of the Invention

[0013] When the electrode holding part 11 for holding the electrocardiogram electrodes 36 is configured to include a water-absorbing material having a water-retaining function as in the electrocardiogram signal measurement belt according to the present invention, the water-absorbing material constituting the electrode holding part 11 is impregnated with water before measurement, and the moisture leaking from the electrode holding part 11 can make the surroundings of the electrocardiogram electrodes 36 in a high humidity state. As a result, even when the environmental humidity is low, the surroundings of the electrocardiogram electrodes 36 can be made in a high humidity state, and the signal conductivity between the electrocardiogram electrodes 36 and the stratum corneum of the skin can be increased, so that the biosignals accompanying the beating of the heart can be measured more stably. In addition, there is no need to use electrocardiogram electrodes with a special structure, and the overall cost of the electrocardiogram signal measurement belt can be reduced.

[0014] If the electrode holding section 11 includes a sheet material arranged to cover the skin contact side of the electrocardiogram electrode 36 and this sheet material is made of a water-absorbent material, the electrocardiogram signal can be indirectly conducted to the electrocardiogram electrode 36 via the sheet material. At this time, by impregnating the sheet material with moisture in advance, the moisture-impregnated sheet material can be brought into close contact with the skin surface, and moisture leaking from the sheet material can create a high humidity state around the electrocardiogram electrode 36. Therefore, even when the environmental humidity is low, the signal conductivity between the electrocardiogram electrode 36 and the stratum corneum of the skin can be increased, and the biosignal accompanying the beating of the heart can be stably measured.

[0015] If the electrode holding section 11 is fixed to the skin contact surface side of the belt body 1 and has a pocket body 16 formed in a pocket shape into which the electrocardiogram electrodes 36 can be inserted and removed, and the pocket body 16 is configured to contain a water absorbent material, a water retention function can be imparted to the pocket body 16 that holds the electrocardiogram electrodes 36. This eliminates the need to add a separate member for exerting the water retention function, and allows the structure to be simplified, reducing the overall cost of the electrocardiogram signal measurement belt.

[0016] The electrode holding section 11 has a pocket body 16 fixed to the skin contact side of the belt body 1 and formed in a pocket shape into which each electrocardiogram electrode 36 can be inserted and removed, and a plurality of electrode windows 17 are opened on the skin contact side of the pocket body 16 to expose the plurality of electrocardiogram electrodes 36 individually, and when each electrocardiogram electrode 36 is housed in the pocket body 16, the skin contact side of each electrocardiogram electrode 36 is exposed from each electrode window 17, and the skin contact side of each electrocardiogram electrode 36 is covered with an electrode cover 18 detachably attached to the pocket body 16, and the electrode cover 18 is made of a water absorbent material. According to this, the electrode cover 18 that touches the skin surface can be removed from the pocket body 16 and replaced with a new electrode cover 18, so that the electrode cover 18 can always be kept hygienic.

[0017] If the pocket body 16 and the electrode cover 18 are each made of a water-absorbent material, it is possible to increase the humidity around the ECG electrode 36 and on the inside and outside of the pocket body 16, thereby further increasing the signal conductivity between the ECG electrode 36 and the stratum corneum of the skin. Therefore, it is possible to accurately measure the biosignals accompanying the beating of the heart, and to correctly evaluate the beating state of the heart.

[0018] A plurality of electrode windows 17 are opened on the skin contact side of the pocket body 16, which expose the plurality of electrocardiogram electrodes 36 individually. When the skin contact side of each electrocardiogram electrode 36 is exposed from each electrode window 17 in a state where each electrocardiogram electrode 36 is housed in the pocket body 16, the electrocardiogram signal can be directly conducted to the electrocardiogram electrode 36 in contact with the skin surface, so that the electrocardiogram signal can be measured more clearly than when the electrocardiogram signal is indirectly conducted to each electrocardiogram electrode 36 via the electrode cover 18 or the like. Even in this case, since the electrode holding part 11 is configured to include a water-absorbing material having a water-retaining function, the water-absorbing material constituting the electrode holding part 11 is impregnated with water in advance, so that the surroundings of the electrocardiogram electrodes 36 can be made in a high humidity state by the water leaking from the electrode holding part 11. Therefore, even when the environmental humidity is low, the signal conductivity between the electrocardiogram electrodes 36 and the stratum corneum of the skin can be increased, and the biosignals accompanying the beating of the heart can be measured more stably.

[0019] If the base mat 34 constituting the electrode unit 2 housed in the electrode holding part 11 and the electrode mat 35 fixed to the base mat 34 are made of a water-absorbent material, both the base mat 34 and the electrode mat 35 can retain moisture, thereby increasing the humidity around each ECG electrode 36 and on the inner surface of the pocket body 16, thereby improving the signal conductivity between each ECG electrode 36 and the stratum corneum of the skin. In addition, since each mat 34, 35 is elastically deformable, when the ECG signal measurement belt is worn around the chest, the elastic deformation of each mat 34, 35 brings each ECG electrode 36 into close contact with the skin surface, thereby improving the signal conductivity between each ECG electrode 36 and the stratum corneum of the skin. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a rear view of the electrocardiogram signal measurement belt according to the first embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing a state in which the electrocardiogram signal measuring belt is worn around the chest. [Diagram 3] FIG. 2 is a rear view of the electrocardiogram signal measurement belt as seen from the skin contact side. [Figure 4]FIG. 2 is a front view of the electrocardiogram signal measuring belt as seen from the front side. [Diagram 5] FIG. 4 is an exploded rear view of the first belt as viewed from the skin contact surface side. [Figure 6] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 7] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Figure 8] FIG. 2 is a block diagram showing electrocardiogram electrodes and a control unit. [Figure 9] 1 is a conceptual diagram showing an outline of an electrocardiogram signal measuring system. [Figure 10] FIG. 2 is a schematic plan view of an electrocardiogram signal measuring belt. [Figure 11] FIG. 2 is a schematic plan view of an electrocardiogram signal measuring belt worn around the chest. [Figure 12] FIG. 11 is a rear view of an electrocardiogram signal measurement belt according to a second embodiment of the present invention. [Figure 13] 13 is a cross-sectional view taken along line CC in FIG. 12. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] (First embodiment) Fig. 1 to Fig. 11 show a first embodiment of an electrocardiogram signal measurement belt according to the present invention. In this embodiment, front, back, left, right, up and down refer to the crossed arrows shown in Fig. 1 and Fig. 3 and the indications of front, back, left, right, up and down written near each arrow. In Fig. 2 to Fig. 4, the electrocardiogram signal measurement belt is composed of a belt main body 1 to be worn around the chest (human body), an electrode unit 2 arranged on the skin contact side of the belt main body 1, a control unit 3 provided on the front side of the belt main body 1, etc. The belt main body 1 is composed of a first belt 4L on the left side of Fig. 3, a second belt 4R on the right side, a pair of fastening belts 5 and 6 connected to adjacent ends of the belts 4L and 4R, and a pair of hook-and-loop fasteners 7 and 8 provided on the front side of the first belt 4L and the skin contact side of the second belt 4R, etc.

[0022] The first belt 4L is made of a highly breathable mesh material such as double raschel fabric, and as shown in FIG. 5, an electrode holder 11 for accommodating the electrode unit 2 and a pair of commercially available anti-slip tapes 12 are arranged on the skin contact side, and a pocket 13 for accommodating the control unit 3 and a loop-shaped hook-and-loop fastener 7 are provided on the front side. Rectangular belt loops 14 and 15 are fixed to the lower side of the belt end adjacent to the second belt 4R and to two places in the upper and lower centers of the front side. The electrode holder 11 is composed of a pocket body 16 made of a non-elastic mesh material, electrode windows 17 opened in three places on the skin contact side of the pocket body 16, an electrode cover 18 covering the electrode windows 17, and flaps 19 fixed to two places on the inner surface of the upper opening of the pocket body 16. The electrode cover 18 is made of a mesh material. Loop-shaped hook-and-loop fasteners 20 are provided above and below the electrode window 17, and hook-shaped hook-and-loop fasteners 21 are provided above and below the electrode cover 18, respectively, so that the electrode cover 18 can be attached and detached to the pocket body 16 as needed. A hook-shaped hook-and-loop fastener 19a is provided at the free end of the flap 19 (see FIG. 6). In FIG. 5, reference numeral 22 denotes an eyelet. The first belt 4L facing the upper inner surface of the pocket 13 is provided with a hook-and-loop fastener 13a for fastening the pocket 13 (see FIG. 7).

[0023] The second belt 4R is made of the same mesh material as the first belt 4L, and as shown in Figs. 3 and 4, a pair of commercially available anti-slip tapes 25 and a hook-shaped hook-and-loop fastener 8 are provided on the skin-contacting surface side, and a loop-shaped hook-and-loop fastener 26 is provided on the entire surface. In addition, rectangular belt loops 27 and 28 are fixed to the upper side of the belt end adjacent to the first belt 4L and two places at the upper and lower centers of the front side. A loop-shaped hook-and-loop fastener 29 is provided on the surface of the free end of the tightening belt 5. The left-right length of the second belt 4R is set to be smaller than the left-right length of the first belt 4L. The first belt 4L and the second belt 4R are connected via the tightening belts 5 and 6. In detail, the right half of the tightening belt 5 is formed in a loop shape (see Fig. 10), and this loop part is passed through the belt loop 15 on the front side of the first belt 4L and the belt loop 27 at the belt end of the second belt 4R. Similarly, the left half of the tightening belt 6 is formed in a loop shape, and this loop portion is passed through the belt loop 28 on the front side of the second belt 4R and the belt loop 14 at the belt end of the first belt 4L. Therefore, the overall length of the belt body 1 can be adjusted within the range of the circumference of the loop portions of each of the tightening belts 5 and 6. Also, by pulling each of the tightening belts 5 and 6 forward around the chest, the first belt 4L and the second belt 4R can be brought closer to each other and tightened.

[0024] As shown in Fig. 5, the electrode unit 2 is composed of a base mat 34 made of urethane foam that is long in the left-right direction, rectangular electrode mats 35 made of urethane foam that are fixed at three positions on the base mat 34 at intervals, first to third electrocardiogram electrodes 36 (36A, 36B, 36C) that are fixed to the skin-contacting surface of each electrode mat 35, and signal leads 39 that connect each of the electrocardiogram electrodes 36A, 36B, 36C to the control unit 3. The base mat 34 between the three electrode mats 35 has an upwardly concave notch 40 formed to make it easier for the electrode unit 2 to bend around the chest. Each of the electrocardiogram electrodes 36A, 36B, 36C is made of an inexpensive and easily available sheet-like electrode material, such as a thin plate made of titanium or stainless steel that has excellent corrosion resistance, or a flexible substrate that has excellent flexibility. Of the three ECG electrodes 36A, 36B, and 36C, the first ECG electrode 36A on the left is an electrode that outputs the positive input signal of the amplifier, the third ECG electrode 36C on the right is an electrode that outputs the negative input signal of the amplifier, and the second ECG electrode 36B in the center is an RLD electrode that inverts and outputs the common-mode signal of the amplifier input.

[0025] As shown in FIG. 6, the electrode unit 2 is inserted between the pocket body 16 and the first belt 4L and is held in place by a flap 19 attached to the hook-and-loop fastener 7. In this state, the ECG electrodes 36A, 36B, and 36C protrude from the electrode window 17 by an amount equivalent to the thickness of the electrode mat 35, but the skin-contacting surfaces of the electrodes 36A, 36B, and 36C are covered by the electrode cover 18 attached to the electrode window 17. In other words, when the ECG electrodes 36A, 36B, and 36C are housed in the electrode holder 11, the skin-contacting surfaces of the electrodes 36A, 36B, and 36C are covered by the electrode cover 18 that is detachably attached to the pocket body 16. The control unit 3 is attached inside the pocket 13 on the front side as shown in FIG. 7, and is held in place by fastening the upper edge of the opening of the pocket 13 with the hook-and-loop fastener 13a. The signal lead 39 is led to the front side of the first belt 4L via the eyelet 22 and then connected to the control unit 3.

[0026] As shown in FIG. 8, the control unit 3 is provided with a battery (secondary battery) 42 as a power source and a circuit board 43. The circuit board 43 is provided with a signal processor 44 for processing signals output from the electrocardiogram electrodes 36A, 36B, and 36C, and a wireless communication unit 45 for transmitting signals processed by the signal processor 44. Although not shown, the battery 42 and the circuit board 43 are housed inside a rectangular case, and a power switch, a charging connector, a connector for the signal lead 39, and the like are provided on the outer surface of the case. FIG. 9 shows an outline of an electrocardiogram signal measurement system including an electrocardiogram signal measurement belt. A signal transmitted from the wireless communication unit 45 of the electrocardiogram signal measurement belt is sent to a server 48 and a personal computer 49 via a smartphone 46 and an Internet line 47, and compared with an electrocardiogram signal stored in advance to evaluate the heartbeat state. The evaluation result is sent to the smartphone 46 via the Internet line 47.

[0027] In order to correctly wear the belt body 1 around the chest and position and wear the electrocardiogram electrodes 36A, 36B, and 36C at the appropriate body parts, a position indicator 50 is formed on the skin-contacting side of the pocket body 16 between the right electrode window 17 and the central electrode window 17 in FIG. 5, as a position reference for wearing the electrocardiogram electrodes 36A, 36B, and 36C at the appropriate body parts. The position indicator 50 is formed of a strip-shaped vertical indicator body 51 perpendicular to the longitudinal line of the belt body 1, and a center mark 52 parallel to the longitudinal direction of the vertical indicator body 51 is formed in a linear shape at the center of the left and right. The vertical indicator body 51 is formed of a material different from that of the pocket body 16, and the color state of the pocket body 16 and the color state of the vertical indicator body 51 are made to be significantly different. For example, when the pocket body 16 is formed of a black mesh material, the vertical indicator body 51 is formed of a chromatic fabric such as blue, red, or yellow. This allows the position and orientation of the vertical indicator 51 to be recognized at a glance.

[0028] When using the electrocardiogram signal measurement belt constructed as above, water is sprayed onto the electrode cover 18 to impregnate it, and then the first belt 4L and the second belt 4R are worn around the chest with the center mark 52 of the position indicator 50 coinciding with the vertical trunk axis P passing through the epigastrium of the body and the second electrocardiogram electrode 36B positioned near the heart as shown in Figures 2 and 11, and the hook-and-loop fastener 8 of the second belt 4R is fastened temporarily to the hook-and-loop fastener 7 of the first belt 4L. Furthermore, with the left and right tightening belts 5 and 6 pulled forward of the body, the hook-and-loop fastener 30 of the tightening belt 5 on the first belt 4L side is fastened to the hook-and-loop fastener 26 on the front side of the second belt 4R. Similarly, the hook-and-loop fastener 31 of the tightening belt 6 on the second belt 4R side is fastened to the hook-and-loop fastener 29 on the front side of the tightening belt 5. In summer when the environmental humidity is high, the moisture from sweat generated on the skin surface where the belt is attached can be absorbed by electrode cover 18 without spraying water on electrode cover 18 in advance, thereby increasing the signal conductivity between each of the ECG electrodes 36A, 36B, 36C and the stratum corneum of the skin. In Fig. 11, the control unit 3 and other components are omitted to avoid complicating the drawing.

[0029] In the electrocardiogram signal measurement belt according to the present embodiment, the electrode cover 18, which is impregnated with moisture, is brought into close contact with the skin surface to measure the electrocardiogram signal. Although the electrocardiogram signal is indirectly conducted to the electrocardiogram electrodes 36A, 36B, and 36C via the electrode cover 18, the electrode cover 18, which is impregnated with moisture in advance, is brought into close contact with the skin surface to measure the electrocardiogram signal, thereby increasing the signal conductivity between the electrocardiogram electrodes 36A, 36B, and 36C and the stratum corneum of the skin, and the biosignal associated with the pulsation of the heart can be measured in a stable state without noise. Therefore, even in a case where the environmental humidity is low, the biosignal associated with the pulsation of the heart can be accurately measured, and the pulsation state of the heart can be correctly evaluated. Furthermore, since the electrode cover 18 is used to impregnate the electrode holding portion 11 with moisture, the structure can be simplified, contributing to a reduction in the weight of the electrocardiogram signal measurement belt, and the belt thickness can be prevented from increasing, which would impair the comfort of wearing the electrocardiogram signal measurement belt.

[0030] The electrode cover 18, which covers the skin-contacting sides of the electrocardiogram electrodes 36A, 36B, 36C, can be attached and detached as needed from the pocket body 16. With this electrocardiogram signal measurement belt, the electrode cover 18 that touches the skin surface can be removed from the pocket body 16 and replaced with a new electrode cover 18, or the electrode cover 18 removed from the pocket body 16 can be washed, so that the electrode cover 18 can always be used in a hygienic state.

[0031] Furthermore, when this electrocardiogram signal measuring belt is used, the signal conductivity between the electrocardiogram electrodes 36 and the stratum corneum of the skin can be increased and biosignals can be measured in a stable state even in low humidity environments, thereby contributing to Goal 3 (Ensure good health and well-being for all) of the Sustainable Development Goals (SDGs) advocated by the United Nations.

[0032] In the electrocardiogram signal measurement belt according to this embodiment, the pocket body 16 may be impregnated with moisture in addition to the electrode cover 18. In this case, by impregnating the pocket body 16 and the electrode cover 18 with moisture in advance, it is possible to increase the humidity around the electrocardiogram electrodes 36A, 36B, 36C and on the inside and outside of the pocket body 16, thereby increasing the signal conductivity between the electrocardiogram electrodes 36A, 36B, 36C and the stratum corneum of the skin. In this case, the pocket body 16 and the electrode cover 18 may be formed from a water-absorbent sheet material such as an open-cell foamed plastic sheet, a moisturizing nonwoven fabric sheet, a gauze fabric, or a knitted fabric.

[0033] Furthermore, the electrocardiogram signal measurement belt according to this embodiment may be impregnated with moisture using the electrode unit 2. More specifically, the electrocardiogram signal measurement belt may be used with the base mat 34 and electrode mat 35 of the electrode unit 2 impregnated with moisture to measure the electrocardiogram signal. In this case, with the electrode cover 18 separated from the pocket body 16, the skin contact surfaces of the electrocardiogram electrodes 36A, 36B, and 36C may be exposed from the electrode window 17, and the electrocardiogram signal may be directly conducted from the stratum corneum to the electrocardiogram electrodes 36A, 36B, and 36C to measure the electrocardiogram signal.

[0034] As described above, when both the base mat 34 and the electrode mat 35 are allowed to retain moisture, the humidity can be increased around the electrocardiogram electrodes 36A, 36B, and 36C and on the inner surface of the pocket body 16. In addition, since the electrocardiogram signal is directly conducted from the stratum corneum of the skin to the electrocardiogram electrodes 36A, 36B, and 36C to measure the biosignal, the electrocardiogram signal can be measured clearly with less noise than when the electrocardiogram signal is indirectly conducted to the electrocardiogram electrodes 36A, 36B, and 36C. Therefore, even if the environmental humidity is low, the electrocardiogram signal accompanying the beating of the heart can be accurately measured, and the beating state of the heart can be correctly evaluated. Furthermore, since the mats 34 and 35 are elastically deformable, when the electrocardiogram signal measurement belt is worn around the chest, the mats 34 and 35 can be elastically deformed to bring the electrocardiogram electrodes 36A, 36B, and 36C into close contact with the skin surface, thereby increasing the signal conductivity between the electrocardiogram electrodes 36A, 36B, and 36C and the stratum corneum of the skin.

[0035] 12 and 13 show a second embodiment of an electrocardiogram signal measurement belt according to the present invention. In this embodiment, a pocket body 16 is fixed to the first belt 4L to form the electrode holding portion 11, and the electrode window 17 and the electrode cover 18 are omitted. The pocket body 16 is formed from a sheet material with excellent water absorption and moisture retention, such as an open-cell foamed plastic sheet, a nonwoven fabric sheet with excellent moisture retention, a gauze fabric, or a knitted fabric, so that the skin-contacting portion of the pocket body 16 covering the electrocardiogram electrodes 36A, 36B, and 36C is impregnated with moisture.

[0036] In the electrocardiogram signal measurement belt according to this embodiment, as in the electrocardiogram signal measurement belt of the first embodiment, when used, the portion of the pocket body 16 covering the electrocardiogram electrodes 36A, 36B, 36C is sprayed with water to impregnate it, or the pocket body 16 absorbs the moisture of sweat generated on the skin surface of the belt attachment part, thereby increasing the signal conductivity between each of the electrocardiogram electrodes 36A, 36B, 36C and the stratum corneum of the skin. In addition, since the pocket body 16 covering the electrocardiogram electrodes 36A, 36B, 36C is impregnated with water, the structure of the electrode holding part 11 is simplified by the amount of the electrode window 17 and the electrode cover 18 omitted compared to the electrocardiogram signal measurement belt of the first embodiment, and the overall cost of the electrocardiogram signal measurement belt can be further reduced. In addition, this contributes to reducing the weight of the electrocardiogram signal measurement belt and improving the comfort of wearing the belt.

[0037] In addition to the above, at least two electrocardiogram electrodes 36 may be provided on the skin contact surface of the belt body 1. The electrode holding portion 11 does not need to have a pocket structure, and any structure capable of holding the electrocardiogram electrodes 36A, 36B, 36C without causing them to shift relative to the belt body 1 will suffice. For example, the electrode holding portion 11 may have a structure in which the upper edges of the left and right cutout portions 40 are fastened and held by hook-and-loop fasteners fixed to the belt body 1. The electrode unit 2 does not need to be composed of one base mat 34 and three electrode mats 35, and may be composed of three independent base mats 34 and three electrode mats 35. [Explanation of symbols]

[0038] 1 Belt body 2 Electrode Unit 11 Electrode holding part 16 Pocket body 17 Electrode window 18 Electrode cover 34 Base Mat 35 Electrode Mat 36 Electrocardiogram electrode

Claims

1. The device comprises a belt body (1) that is attached to a human body, an electrode holding portion (11) provided on the belt body (1), and a plurality of electrocardiogram electrodes (36) held by the electrode holding portion (11), The electrode holding portion (11) is fixed to the skin contact surface side of the belt body (1) and has a pocket body (16) formed in a pocket shape into which each electrocardiogram electrode (36) can be inserted and removed, The electrocardiogram signal measuring belt is characterized in that the pocket body (16) is constructed to include a water-absorbent material having a water-retaining function.

2. A device comprising: a belt body (1) for attachment to a human body; an electrode holding portion (11) provided on the belt body (1); and a plurality of electrocardiogram electrodes (36) held by the electrode holding portion (11); The electrode holding portion (11) is fixed to the skin contact surface side of the belt body (1) and has a pocket body (16) formed in a pocket shape into which each electrocardiogram electrode (36) can be inserted and removed, A plurality of electrode windows (17) are opened on the skin contact surface side of the pocket body (16) to expose a plurality of electrocardiogram electrodes (36) individually, When each electrocardiogram electrode (36) is housed in the pocket body (16), the skin contact surface of each electrocardiogram electrode (36) is exposed from each electrode window (17); The skin-contacting surface side of the electrocardiogram electrode (36) is covered with an electrode cover (18) detachably attached to the pocket body (16), An electrocardiogram signal measuring belt, characterized in that the electrode cover (18) is made of a water-absorbent material having a water-retaining function.

3. A device comprising: a belt body (1) for attachment to a human body; an electrode holding portion (11) provided on the belt body (1); and a plurality of electrocardiogram electrodes (36) held by the electrode holding portion (11); The electrode unit (2) is housed in the electrode holder (11), The electrode unit (2) comprises a base mat (34), an electrode mat (35) fixed to the base mat (34), and a plurality of electrocardiogram electrodes (36) fixed to the skin-contacting surface side of each electrode mat (35), The electrocardiogram signal measuring belt is characterized in that the base mat (34) and the electrode mat (35) are each made of a water-absorbent material having a water-retaining function.

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