Blood pressure measurement device

Abstract

To provide a blood pressure measurement device in which the relative positions of a cuff and a band can be easily adjusted and which can prevent the displacement of the cuff in the width direction.SOLUTION: A blood pressure measurement device 1 includes: a device body 3; a first cuff 4 which is provided in the device body 3 and presses a living body 30; a band 6 which is provided on the outer surface side of the first cuff 4 and is wrapped around the living body 300; and a regulation member 7 which regulates the relative movement in the width direction of the first cuff 4 and the band 6 and allows the relative movement in the longitudinal direction of the first cuff 4 and the band 6.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a blood pressure measuring device. [Background technology]

[0002] In recent years, blood pressure measuring devices used for measuring blood pressure are used as a means for checking health conditions not only in medical facilities but also at home. For example, blood pressure measuring devices measure blood pressure by inflating and deflating a cuff wrapped around the wrist or the like of a living body and detecting the pressure of the cuff with a pressure sensor, thereby detecting the vibration of the arterial wall.

[0003] Also, as a blood pressure measuring device, a technology is known in which a hook-and-loop fastener is provided on the surface of the cuff so that the ends do not shift when both ends of the cuff are overlapped (see, for example, Patent Document 1).Also, as a blood pressure device, a technology is known in which the cuff is placed on the band by inserting a pin provided on the cuff into an oblong hole in the band after sliding the band to adjust the band position (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2012 / 018029 [Patent Document 2] International Publication No. 2022 / 111377 Summary of the Invention [Problem to be solved by the invention]

[0005] In the blood pressure measuring device described in Patent Document 1, it is difficult to adjust the wrapping strength of the cuff after the blood pressure measuring device is attached to a living body. In addition, in the blood pressure measuring device described in Patent Document 2, since the band is fixed to the back of the cuff, the cuff is fixed to the band, and therefore, the relative positional relationship between the cuff and the band in the longitudinal direction cannot be adjusted.

[0006] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a blood pressure measuring device that allows easy adjustment of the relative positions of the cuff and the band and prevents the cuff from shifting in the width direction. [Means for solving the problem]

[0007] According to one embodiment, a blood pressure measuring device is provided, comprising: a device body; a first cuff provided on the device body and pressing against a living body; a band provided on the outer surface side of the first cuff and wrapped around the living body; and a regulating member that regulates relative movement of the first cuff and the band in the width direction and allows relative movement of the first cuff and the band in the longitudinal direction.

[0008] According to this aspect, the restricting member restricts the relative movement of the band and the first cuff in the width direction, while allowing the relative movement of the first cuff and the band in the longitudinal direction. When the blood pressure measuring device is attached to a living body and when the first cuff is inflated, the first cuff and the band do not shift in the width direction, and the relative positions of the first cuff and the band in the longitudinal direction can be easily adjusted. Therefore, the blood pressure measuring device can suitably compress the living body by inflating the first cuff, resulting in good measurement accuracy.

[0009] In one aspect of the blood pressure measuring device described above, the regulating member includes a sheet fixed to the device body side of the first cuff and separable from the tip side of the first cuff, a fixing member provided on opposing parts of the sheet and the first cuff and fixing the sheet and the first cuff, and a first regulating portion provided on the band, into which the sheet can be inserted and which regulates movement of the sheet in the width direction.

[0010] According to this aspect, the blood pressure measurement device can restrict movement of the first cuff in a direction away from the band by fixing the sheet inserted into the first restriction portion and the first cuff with the fixing member.

[0011] In one aspect of the blood pressure measuring device described above, the sheet, the fixing member and the first regulating portion are formed to a length and / or position that allows the sheet to be inserted into the first regulating portion and the sheet and the first cuff to be fixed by the fixing member when the band is wrapped around the living body having the minimum and maximum circumferences intended for wearing.

[0012] According to this aspect, even if the blood pressure measurement device is attached to a living body to which the device is intended to be attached, the sheet inserted into the first restriction portion can be fixed to the first cuff, making it possible to measure blood pressure with high measurement accuracy in the living body to which the device is intended to be attached.

[0013] In one aspect of the blood pressure measurement device described above, a second cuff is provided that can overlap the first cuff outside the first cuff, and the regulating member regulates relative movement in the width direction between the second cuff and at least one of the first cuff and the band.

[0014] According to this aspect, when the blood pressure measuring device is attached to a living body and when the first cuff and the second cuff are inflated, the first cuff, the second cuff and the band do not shift in the width direction, and the relative positions of the first cuff, the second cuff and the band in the longitudinal direction can be easily adjusted. Therefore, the blood pressure measuring device can suitably compress the living body by inflating the first cuff and the second cuff, and therefore the measurement accuracy is good. Furthermore, since the first cuff and the second cuff overlap each other, when the blood pressure measuring device is inflated, the overlapping first cuff and the second cuff can more suitably compress the living body.

[0015] In one aspect of the blood pressure measuring device described above, the regulating member includes a sheet fixed to the device body side of the first cuff and separable from the tip side of the first cuff, a fixing member provided on opposing parts of the sheet and the first cuff, a first regulating portion provided on the inner surface of the band, into which the sheet can be inserted and which regulates movement of the sheet in the width direction, and a second regulating portion provided on the inner surface of the second cuff, into which the sheet can be inserted and which regulates movement of the sheet in the width direction.

[0016] According to this aspect, even if the blood pressure measuring device is attached to a living body to which the device is intended to be attached, the sheet inserted into the first regulating portion and the second regulating portion can be fixed to the first cuff, making it possible to measure blood pressure with high measurement accuracy in the living body to which the device is intended to be attached.

[0017] In the blood pressure measuring device of one embodiment described above, the sheet, the fixing member, the first regulating portion and the second regulating portion are formed to a length and / or position that allows the sheet to be inserted into the first regulating portion and the second regulating portion and the sheet and the first cuff to be fixed by the fixing member when the band is wrapped around the living body having the minimum and maximum circumferences intended for wearing.

[0018] According to this aspect, even if the blood pressure measuring device is attached to a living body to which the device is intended to be attached, the sheet inserted into the first regulating portion and the second regulating portion can be fixed to the first cuff, making it possible to measure blood pressure with high measurement accuracy in the living body to which the device is intended to be attached. Effect of the Invention

[0019] According to the present invention, it is possible to provide a blood pressure measuring device that can easily adjust the relative positions of the cuff and the band and prevent the cuff from shifting in the width direction. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view showing a configuration of a blood pressure measurement device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing the configuration of the blood pressure measuring device. [Diagram 3] FIG. 2 is a side view showing the configuration of the blood pressure measuring device. [Figure 4] FIG. 2 is a side view showing the configuration of the blood pressure measuring device when worn on the wrist. [Diagram 5] FIG. 2 is a block diagram showing the configuration of the blood pressure measuring device. [Figure 6] FIG. 2 is a cross-sectional view showing the configuration of a main part of the blood pressure measuring device. [Figure 7]FIG. 2 is a plan view showing the main configuration of the blood pressure measuring device from the rear side of the device body. [Figure 8] FIG. 2 is a plan view showing the main configuration of the blood pressure measuring device from the rear side of the device body with some components omitted. [Figure 9] FIG. 2 is an exploded perspective view showing the configuration of the main body of the device. [Figure 10] FIG. 2 is an exploded perspective view showing the configuration of the main body of the device. [Figure 11] FIG. 2 is a block diagram showing an example of a fluid circuit of the blood pressure measuring device. [Figure 12] FIG. 4 is a perspective view illustrating a schematic configuration of a restriction member of the blood pressure measuring device. [Figure 13] FIG. 4 is a perspective view illustrating a schematic configuration of a restriction member of the blood pressure measuring device. [Figure 14] FIG. 11 is a plan view showing a main configuration of a blood pressure measuring device according to another embodiment of the present invention, viewed from the back side of the device body. [Figure 15] FIG. 11 is a side view showing the configuration of a blood pressure measurement device according to another embodiment of the present invention. [Figure 16] FIG. 11 is a plan view showing a main configuration of a blood pressure measuring device according to another embodiment of the present invention, viewed from the back side of the device body. [Figure 17] FIG. 2 is a block diagram showing an example of a fluid circuit of the blood pressure measuring device. [Figure 18] FIG. 2 is a block diagram showing an example of a fluid circuit of the blood pressure measuring device. [Figure 19] FIG. 11 is a cross-sectional view illustrating a schematic configuration of a restriction member of a blood pressure measuring device according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an example of a blood pressure measuring device 1 according to an embodiment of the present invention will be described with reference to FIGS.

[0022] FIG. 1 is a perspective view showing the configuration of a blood pressure measuring device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of the blood pressure measuring device 1 in a state where a restricting member 7 is exposed. FIG. 3 is a side view showing the configuration of the blood pressure measuring device 1, and FIG. 4 is a side view showing the configuration of the blood pressure measuring device 1 in a state where the blood pressure measuring device 1 is worn on a wrist 300. FIG. 5 is a block diagram showing the configuration of the blood pressure measuring device 1. FIG. 6 is a cross-sectional view showing the configuration of the device body 3, a part of the first cuff structure 4, and a part of the second cuff structure 5 of the blood pressure measuring device 1. FIG. 7 is a plan view showing the configuration of the device body 3, a part of the first cuff structure 4, and a part of the second cuff structure 5 of the blood pressure measuring device 1, and FIG. 8 is a plan view showing the configuration of the device body 3, a part of the first cuff structure 4, and a part of the second cuff structure 5 of the blood pressure measuring device 1 with the cuff cover 33 omitted.

[0023] Fig. 9 is an exploded perspective view showing the configuration of the device body 3 from the top side, and Fig. 10 is an exploded perspective view showing the configuration of the device body 3 from the bottom side. Fig. 11 is a block diagram showing an example of the fluid circuit 24 of the blood pressure measuring device 1. Figs. 12 and 13 are perspective views showing a schematic configuration of the restriction member 7 of the blood pressure measuring device 1.

[0024] 1 to 4, the blood pressure measuring device 1 includes, for example, a device main body 3, a first cuff structure (first cuff) 4, a second cuff structure 5 (second cuff), a band 6, and a restriction member 7. In the blood pressure measuring device 1, the first cuff structure 4 and the second cuff structure 5 extend from the device main body 3 in the direction in which the device main body 3 faces each other, and the band 6 covers the first cuff structure 4 and the second cuff structure 5, and is formed so as to be fixable to a wrist 300, which is a living body, by the band 6. In addition, the blood pressure measuring device 1 restricts the relative movement of the first cuff structure 4 and / or the second cuff structure 5 and the band 6 in the width direction by the restriction member 7.

[0025] As shown in Figures 1 to 10, the device main body 3 includes, for example, a housing 11, a display unit 12, an operation unit 13, a pump 14, an acceleration sensor 15, a valve 16, a pressure sensor 17, a battery 18, a communication unit 19, a biosensor 20, a charging circuit unit 21, a memory 22, a processor 23, a fluid circuit 24, and a substrate 25.

[0026] The housing 11 is a case that houses the components of the device main body 3. The housing 11 houses, for example, a display unit 12, an operation unit 13, a pump 14, an acceleration sensor 15, a valve 16, a pressure sensor 17, a battery 18, a communication unit 19, a biosensor 20, a charging circuit unit 21, a memory 22, a processor 23, a fluid circuit 24, and a substrate 25.

[0027] The housing 11 includes, for example, an outer case 31 , a windshield 32 that covers an upper opening of the outer case 31 , and a cuff cover 33 that is provided below the outer case 31 .

[0028] The outer case 31 is formed in a bottomed tubular shape, for example, a cylindrical shape, a rectangular tubular shape, or a polygonal tubular shape having a bottom. In the present embodiment, the outer case 31 is formed in a bottomed rectangular tubular shape. As a specific example, the outer case 31 has a rectangular tubular peripheral wall portion 31a, a bottom portion 31b provided on the peripheral wall portion 31a, and a pair of loop portions 31c provided on a pair of surfaces among the four outer peripheral surfaces of the peripheral wall portion 31a.

[0029] In the peripheral wall portion 31a, for example, an opening 31d in which a part of the operation portion 13 is disposed is formed. For example, the opening 31d is formed in one surface of the peripheral wall portion 31a other than the two surfaces on which the pair of loop portions 31c are provided. Also, for example, two openings 31d are formed in one surface of the peripheral wall portion 31a.

[0030] The bottom 31b constitutes the back surface (bottom 31b) of the housing 11 (outer case 31). The bottom 31b protrudes, for example, in a portion capable of contacting the wrist 300. For example, the bottom 31b has a protrusion 31b1 formed by a rectangular protrusion at the center of the outer surface side and a rectangular recess at the center of the inner surface side of the bottom 31b. The bottom 31b also has a plurality of windows 31b2 in which the biosensors 20 are disposed, and a plurality of holes 31b3 in which connection parts 73 and 83, which will be described later, are disposed as members for fluidly connecting the first cuff structure 4 and the second cuff structure 5 to the pump 14 are disposed.

[0031] The biosensor 20 is disposed on the inner surface side of the protruding portion 31b1. The protruding portion 31b1 constitutes a sensor unit including at least one of the biosensor 20 and the charging terminal 214 disposed on the rear surface of the housing 11. Here, the biosensor 20 and the charging terminal 214 disposed on the rear surface of the housing 11 means that a part of the components constituting the biosensor 20 is exposed on the rear surface of the housing 11 or is disposed on the rear surface of the housing 11 via a member other than the first cuff structure 4 and the second cuff structure 5 (for example, a cover 31b5 described later).

[0032] The window portion 31b2 is formed in the protruding portion 31b1. For example, as shown in Figures 6 to 8, the window portion 31b2 is formed by a plurality of openings 31b4 formed in a plurality of positions of the protruding portion 31b1 and a light-transmitting cover 31b5 made of glass, resin or the like that covers the openings 31b4. The cover 31b5 covers, for example, the outer surface of the protruding portion 31b1.

[0033] As shown in FIG. 8, a plurality of holes 31b3 are formed between the protrusion 31b1 and each loop 31c of the bottom 31b. In this embodiment, three holes 31b3 are formed between the protrusion 31b1 and one loop 31c, and three holes 31b3 are formed between the protrusion 31b1 and the other loop 31c. These three holes 31b3 are arranged in one direction, for example, in a direction perpendicular to the opposing direction of the pair of loops 31c. That is, the bottom 31b, which is the back surface of the housing 11, has three holes 31b3 at one end in one direction to which a part of the first cuff structure 4 is fixed, which are arranged at a position away from the protrusion 31b1, and three holes 31b3 at the other end in the one direction to which the other part of the first cuff structure 4 and the second cuff structure 5 are fixed, which are arranged away from the protrusion 31b1 in the other direction.

[0034] The bottom 31b is provided with a slit-shaped ventilation hole 31b6 that is long in one direction, and the bottom 31b is provided with a waterproof / moisture-permeable sheet 31b7 that covers the ventilation hole 31b6. The waterproof / moisture-permeable sheet 31b7 is formed to prevent water from entering the housing 11 from the outside through the ventilation hole 31b6 of the bottom 31b, and to allow ventilation between the inside of the housing 11 and the outside. The ventilation hole 31b6 and the waterproof / moisture-permeable sheet 31b7 are provided at positions that do not overlap with the first cuff structure 4 and the second cuff structure 5 fixed to the bottom 31b, i.e., at positions separated from the first cuff structure 4 and the second cuff structure 5. For example, in a direction perpendicular to the opposing direction of the pair of loop portions 31c, a flow path body 72 of a first compression cuff 52 of the first cuff structure 4 described later is provided adjacent to one side of the protrusion 31b1, and an air vent 31b6 and a waterproof moisture permeable sheet 31b7 are provided adjacent to the other side of the protrusion 31b1.

[0035] The loop portion 31c is formed so that the band 6 can be passed through and the band 6 can be fixed or folded back. For example, the loop portion 31c is a rectangular annular member having an opening that is long in one direction through which the band 6 can be inserted. The loop portion 31c is formed integrally with the outer surface of the outer case 31. One end of the band 6 is fixed to one of the pair of loop portions 31c, and the band 6 is folded back around the other loop portion 31c.

[0036] The windshield 32 is a glass plate having a rectangular shape in this embodiment, which is the same shape as the outer peripheral edge of the outer case 31. Note that the windshield 32 is not limited to a glass plate as long as it is made of a transparent or light-transmitting material.

[0037] Cuff cover 33 covers bottom 31b of outer case 31. Protruding portion 31b1 of bottom 31b is disposed in cuff cover 33, and opening 33a is formed to expose protruding portion 31b1 to the outside. For example, cuff cover 33 is formed with a thickness and shape such that protruding portion 31b1 protrudes from a main surface of cuff cover 33 that faces wrist 300 when cuff cover 33 is fixed to bottom 31b. Also, for example, cuff cover 33 is formed with holes 33b in which screws are disposed at four corners, and cuff cover 33 is detachably fixed to bottom 31b of outer case 31 of housing 11 by screws or the like.

[0038] The cuff cover 33 covers the ends of the first cuff structure 4 and the second cuff structure 5 that are disposed on the bottom 31b, disposes the ends of the first cuff structure 4 and the second cuff structure 5 in a gap formed between the cuff cover 33 and the bottom 31b, and fixes the first cuff structure 4 and the second cuff structure 5 to the bottom 31b. As a specific example, the cuff cover 33 covers a part of a flow path body 72 and a connection part 73 of the first pressing cuff 52, a flow path body 82 and three connection parts 83 of the sensing cuff 54, and a flow path body 92 and two connection parts 93 of the second pressing cuff 62, which will be described later. The cuff cover 33 fixes the first cuff structure 4 and the second cuff structure 5 by restricting the movement of the covered parts of the part of the first pressing cuff 52, the sensing cuff 54, and the second pressing cuff 62 in a direction away from the bottom 31b. In addition, the cuff cover 33 may be configured to have a cushioning material between the first cuff structure 4 and the second cuff structure 5.

[0039] The display unit 12 is disposed directly below the windshield 32. The display unit 12 is electrically connected to the processor 23. The display unit 12 is, for example, a liquid crystal display or an organic electroluminescence display. As a specific example, the display unit 12 is an OLED (Organic Light Emitting Diode). The display unit 12 displays various information including date and time, blood pressure values ​​such as systolic blood pressure and diastolic blood pressure, measurement results such as heart rate, and information such as the charging status and remaining amount of the battery 18. The display unit 12 is formed, for example, in the same shape as the windshield 32 or in a shape slightly smaller than the windshield 32 in a plan view.

[0040] The operation unit 13 is configured to be able to input commands from the user. The operation unit 13 includes, for example, a plurality of buttons 41 provided on the housing 11, a sensor that detects the operation of the buttons 41, and a touch panel 43 provided on the display unit 12 or the windshield 32. The operation unit 13 converts commands into electrical signals when operated by the user. The sensor and the touch panel 43 are electrically connected to the processor 23, and output electrical signals corresponding to the operations to the processor 23.

[0041] The pump 14 is, for example, a piezoelectric pump. The pump 14 compresses, for example, air as a fluid, and supplies the compressed air via the fluid circuit 24 to an air bag 71 of a first pressing cuff 52 (described later) and an air bag 81 of a sensing cuff 54 (described later) of the first cuff structure 4, and an air bag 91 of a second pressing cuff 62 (described later) of the second cuff structure 5. The pump 14 is electrically connected to the processor 23.

[0042] The acceleration sensor 15 is, for example, a three-axis acceleration sensor. The acceleration sensor 15 measures, for example, acceleration and outputs an analog signal. The acceleration sensor 15 is connected to the processor 23 via, for example, an A / D conversion circuit.

[0043] The valve 16 is, for example, an on-off valve. The valve 16 opens and closes a fluid circuit that connects the pump 14 to the first cuff structure 4 and / or the second cuff structure 5, and / or a fluid circuit that connects the first cuff structure 4 to the outside (atmosphere), in the fluid circuit 24. The valve 16 is electrically connected to the processor 23. For example, the valve 16 is opened and closed under the control of the processor 23.

[0044] As a specific example, the valve 16 is a safety valve that releases air supplied to the first pressing cuff 52, the second pressing cuff 62, and the sensing cuff 54 of the first cuff structure 4, which will be described later, to the atmosphere. The valve 16 is switched to a closed state by being controlled by the processor 23 when supplying air to the first pressing cuff 52 and the sensing cuff 54 during blood pressure measurement, for example. The valve 16 is also switched from a closed state to an open state by being controlled by the processor 23 when exhausting the first pressing cuff 52 and the sensing cuff 54. The valve 16 may be formed so that the opening degree can be adjusted. The valve 16 may be provided on the fluid circuit 24, or may be provided integrally inside the housing of the pump 14.

[0045] The pressure sensor 17 is provided in, for example, the fluid circuit 24. The pressure sensor 17 detects the pressure of the first pressing cuff 52 and / or the sensing cuff 54. For example, the pressure sensor 17 detects the pressure of the sensing cuff 54. The pressure sensor 17 is electrically connected to the processor 23 via, for example, an A / D conversion circuit, converts the detected pressure into an electrical signal, and outputs it to the processor 23.

[0046] Battery 18 is, for example, a secondary battery such as a rechargeable lithium ion battery. Battery 18 is electrically connected to processor 23. Battery 18 supplies power to processor 23. Battery 18 supplies driving power to each component of processor 23, as well as to display unit 12, operation unit 13, pump 14, acceleration sensor 15, valve 16, pressure sensor 17, communication unit 19, and biosensor 20 via processor 23.

[0047] The communication unit 19 is configured to be capable of transmitting and receiving information wirelessly and / or wired to and from an external device. The communication unit 19 is, for example, a wireless communication module that complies with a wireless communication standard. The communication unit 19 transmits, for example, information controlled by the processor 23 and information such as measured blood pressure values ​​and pulse rates to the external device, and also receives a program for software update from the external device and sends it to the control unit. In this embodiment, the external device is, for example, an external terminal such as a smartphone, a tablet terminal, a personal computer, or a smart watch.

[0048] In this embodiment, the communication unit 19 and the external terminal may be directly connected or may be connected via a network. The communication unit 19 and the external terminal may be connected via a mobile communication network such as 4G or 5G, or a wireless communication line such as Wimax or Wi-Fi (registered trademark). The communication unit 19 and the external device may be connected by a wireless communication means such as BLE (Bluetooth (registered trademark) Low Energy), NFC (Near Field Communication), or infrared communication. The communication unit 19 may have, in addition to a wireless communication module, a general-purpose connector such as a micro USB (Universal Serial Bus) or a dedicated connector for the blood pressure measurement device 1, and may be connected to the external terminal directly or via a wired communication line such as a LAN (Local Area Network) connection by various cables such as a USB cable. For this reason, the communication unit 19 may be configured to include a plurality of communication means such as a wireless antenna and a micro USB connector. The connector for wired communication may be a dedicated connector for the blood pressure measurement device 1.

[0049] The biosensor 20 is a sensor formed to be capable of detecting bioinformation by contacting or facing the wrist 300. The biosensor 20 converts the detected bioinformation into an electrical signal and outputs it to the processor 23. The biosensor 20 may be, for example, a sensor that measures physical quantities such as heart rate and body temperature, or may be a sensor that measures chemical values ​​such as blood glucose level and blood oxygen concentration. In this embodiment, the biosensor 20 includes, for example, a PPG sensor 20a, an SpO2 sensor 20b, and an ECG sensor 20c.

[0050] For example, the PPG sensor 20a measures the heart rate by photoplethysmography. For example, the PPG sensor 20a includes a first LED 20d, a second LED 20e, and a first PD (Photodiode) 20f.

[0051] For example, the SpO2 sensor 20b measures saturation (transcutaneous arterial oxygen saturation). The SpO2 sensor 20b includes a second LED 20e and a second PD 20g. Here, for example, the PPG sensor 20a and the SpO2 sensor 20b share the second LED 20e.

[0052] For example, the ECG sensor 20c measures the flow of electricity in the heart and obtains an electrocardiogram waveform. For example, the ECG sensor 20c has a pair of electrocardiogram electrodes 20c1.

[0053] The charging circuit unit 21 includes, for example, an antenna unit 211, a power receiving unit 212, a charging unit 213, and a charging terminal 214. The charging circuit unit 21 charges the battery 18 by wire feeding and / or wireless feeding. For example, the charging circuit unit 21 receives transmission power transmitted from the antenna unit 103 of the power transmitting device 100 provided externally via the antenna unit 211, and charges the battery 18. Also, for example, the charging circuit unit 21 receives transmission power transmitted from the power transmitting terminal 104 of the power transmitting device 100 provided externally via the charging terminal 214, and charges the battery 18. That is, the charging circuit unit 21 selectively uses the antenna unit 211 and the charging terminal 214 to receive power from the power transmitting device 100, and charges the battery 18. The charging circuit section 21 may be configured to allow both wire power feeding and wireless power feeding, or may be configured to allow only one of wire power feeding and wireless power feeding.

[0054] The antenna unit 211 receives the transmitted power from the antenna unit 103 of the power transmitting device 100. The antenna unit 211 is, for example, a power receiving coil serving as a power receiving resonant circuit. The antenna unit 211 supplies the received power to the power receiving unit 212. The power receiving surface of the antenna unit 211 is formed in a flat shape. The antenna unit 211 is disposed, for example, within the housing 11. As a specific example, the antenna unit 211 is disposed adjacent to the display unit 12 on the opposite side of the windshield 32 of the display unit 12 within the housing 11. The antenna unit 211 includes, for example, a resonant capacitor, and constitutes a power receiving resonant circuit.

[0055] Power receiving unit 212 rectifies the power received by antenna unit 211 or charging terminal 214 and supplies it to charging unit 213. As a specific example, power receiving unit 212 rectifies the received power supplied from antenna unit 211 and converts it from AC to DC. For example, power receiving unit 212 includes a rectifier circuit and a control circuit, controls the operation of the rectifier circuit by the control circuit, and outputs the rectified DC power to charging unit 213.

[0056] The charging unit 213 supplies the power supplied from the power receiving unit 212 to the battery 18 as charging power. For example, the charging unit 213 converts the power supplied from the power receiving unit 212 into a predetermined current value and voltage value and supplies the power to the battery 18. In addition, for example, the charging unit 213 may have a circuit that outputs the charging state of the battery 18 to the power receiving unit 212 and / or the processor 23.

[0057] The charging terminal 214 has, for example, a pair of terminals 214a, and receives transmitted power from the power transmitting terminal 104 of the power transmitting device 100 via this pair of terminals 214a.

[0058] The memory 22 includes, for example, a RAM (Random Access Memory) and a ROM (Read Only Memory). The memory 22 stores various data. For example, the memory 22 pre-stores, in a changeable manner, various program data such as programs and applications for controlling the entire blood pressure measuring device 1 and the pump 14, setting data for setting various functions of the blood pressure measuring device 1, calculation data for calculating a blood pressure value from the pressure measured by the pressure sensor 17, calculation data for calculating bioinformation such as a heart rate, saturation, and an electrocardiogram waveform from information measured by the biosensor 20, and the like.

[0059] The processor 23 controls the operation of the entire blood pressure measuring device 1 and the operation of the pump 14 and the valve 16 based on the programs stored in the memory 22, and executes predetermined operations (functions). The processor 23 also executes predetermined calculations, analyses, processing, etc. according to the loaded programs. The processor 23 is a calculation device such as a CPU. The processor 23 may include, for example, a main CPU and a sub-CPU. The processor 23 also displays the status and results of the various executed operations and the calculations, analyses, processing, etc. on the display unit 12 by a program or an application.

[0060] The fluid circuit 24 fluidly connects at least two of the pump 14, the valve 16, the pressure sensor 17, the first cuff structure 4, and the second cuff structure 5, which are provided in the housing 11. The fluid circuit 24 may include components such as a tube or a flow path plate 24a that forms a flow path for the fluid supplied from the pump 14 to the first cuff structure 4, a single or multiple orifices 24b that are flow resistances that control the supply amount and pressure of the fluid supplied to the first cuff structure 4 and / or the second cuff structure 5, and a check valve that controls the flow direction of the fluid. The flow path plate 24a is formed by joining multiple plates made of a resin material or a metal material to a sheet or double-sided tape that is arranged between adjacent plates and has slits that serve as flow paths. The multiple orifices 24b may be provided in the flow path plate 24a, or may be provided in a part of the first cuff structure 4 or the second cuff structure 5.

[0061] The board 25 includes, for example, a control board 25a, a sensor main board 25b, and a sensor sub-board 25c.

[0062] On the control board 25a, for example, the acceleration sensor 15, the valve 16, the pressure sensor 17, the communication unit 19, the circuit configuration of the charging circuit unit 21, the memory 22, and the processor 23 are mounted.

[0063] A first LED 20d, a second LED 20e, a first PD 20f, and a second PD 20g used in the PPG sensor 20a and the SpO2 sensor 20b are mounted on the sensor main board 25b.

[0064] Various circuits and electronic components for configuring the PPG sensor 20a, the SpO2 sensor 20b, and the ECG sensor 20c are mounted on the sensor sub-board 25c. For example, the control board 25a, the sensor main board 25b, and the sensor sub-board 25c are electrically connected to each other.

[0065] Specific examples of the first cuff structure 4 will be described below with reference to Figs. 1 to 4 and 6 to 8. As shown in Figs. 1 to 4 and 6 to 8, the first cuff structure 4 includes a first curler 51, a first pressure cuff 52, a back plate 53, and a sensing cuff 54. The first cuff structure 4 includes, for example, a first curler 51, a first pressure cuff 52, a back plate 53, and a sensing cuff 54. The first cuff structure 4 is configured by sequentially stacking the first curler 51, the first pressure cuff 52, the back plate 53, and the sensing cuff 54 toward the wrist 300. The first cuff structure 4 may be configured without the first curler 51 and / or the back plate 53.

[0066] For example, one end of the first curler 51 is fixed to the bottom 31b provided on the wrist 300 side of the housing 11. The first curler 51 is formed in a band shape that curves to follow the circumferential direction of the wrist 300. The first curler 51 is made of a resin material. The first curler 51 is formed of a low-hardness material that is flexible and has shape retention. Here, flexibility means that the shape of the first curler 51 changes in the radial direction when an external force is applied to the first curler 51 from the band 6. Shape retention means that the first curler 51 can maintain a shape that has been previously formed when no external force is applied. That is, the first curler 51 is formed of a resin material that is not compressively deformed or does not omit compressive deformation, but has a hardness that allows elastic deformation such as bending deformation that changes the shape, particularly the curvature of the curved portion. Therefore, first curler 51 is formed to be elastically deformable so that when an external force is applied, it bends and deforms to fit the shape of the wrist on which it is worn, enlarging or reducing the internal space in which wrist 300 is placed. For example, first curler 51 is formed from a thermoplastic polyurethane resin (hereinafter referred to as TPU) or a polypropylene resin.

[0067] One end of the first curler 51 is fixed to the housing 11. The first curler 51 is formed to a length that faces at least one of the two arteries 311, 312 when the blood pressure measurement device 1 is worn on the wrist 300 that has the longest circumference among the users who are expected to wear the device. Preferably, the first curler 51 is formed to a length that faces the two arteries 311, 312 when the blood pressure measurement device 1 is worn on the wrist 300 that has the longest circumference among the users who are expected to wear the device. The first curler 51 is set to a length that does not make the other end contact with the device main body 3 when the blood pressure measurement device 1 is worn on the wrist 300 that has the shortest circumference among the users who are expected to wear the device. For example, the portion of the first curler 51 that extends from the housing 11 of the device main body 3 is curved with a predetermined radius of curvature so as to follow the shape of the side of one of the left and right wrists 300 and the palm side of the wrist 300.

[0068] The first pressure cuff 52 is fixed to the inner circumferential surface of the first curler 51 by double-sided tape, adhesive, heat welding, or the like. The first pressure cuff 52 is fluidly connected to the pump 14 via the fluid circuit 24. One main surface of the first pressure cuff 52 is fixed to the inner surface of the first curler 51. When the first pressure cuff 52 inflates, it presses against the back side of the wrist 300 and presses the back plate 53 and the sensing cuff 54 towards the wrist 300.

[0069] The first pressure cuff 52 includes, for example, one or more air bags 71, a flow path body 72 provided at an end of the air bag 71, and a connection part 73 such as a nipple that is provided on the flow path body 72 and connected to the fluid circuit 24. Here, the air bag 71 is a bag-like structure, and in this embodiment, the blood pressure measuring device 1 is configured to use air by the pump 14, so the description will be given using an air bag, but when a fluid other than air is used, the bag-like structure may be a fluid bag that is inflated by the fluid. The air bag 71 is formed into a rectangular bag shape that is long in one direction.

[0070] Air bladder 71 is formed into a bag shape by heat welding a plurality of sheet members. For example, when first pressure cuff 52 has a configuration including a plurality of air bladders 71, the plurality of air bladders 71 are stacked and integrally formed by welding or the like, and are fluidly continuous. The sheet member forming air bladder 71 is formed of, for example, a thermoplastic elastomer. Here, the thermoplastic elastomer is, for example, TPU.

[0071] The flow path body 72 is provided integrally with, for example, a part of one edge portion in the longitudinal direction of the air bag 71. The flow path body 72 is formed by a part of two sheet members out of the multiple sheet members forming the air bag 71. The flow path body 72 is formed in a shape that is elongated in one direction with a width smaller than the width of the air bag 71 in the short direction. A connection portion 73 is provided integrally with the tip of the flow path body 72. The flow path body 72 is connected to the fluid circuit 24 via the connection portion 73, and forms a flow path between the fluid circuit 24 and the air bag 71. The thickness of the flow path body 72 when inflated is smaller than the thickness of the air bag 71 when inflated.

[0072] For example, there is provided one connection portion 73. The one connection portion 73 is connected to the fluid circuit 24 via one hole portion 31b3 formed in the bottom portion 31b.

[0073] For example, in order to avoid the protrusion 31b1 formed on the bottom 31b, the flow path body 72 extends from one end side to the other end side of the bottom 31b in the opposing direction of the pair of loop portions 31c adjacent to the protrusion 31b1, and the connection portion 73 is connected to one of three holes 31b3 formed at the end portion of the bottom 31b on the side from which the second cuff structure 5 protrudes.

[0074] The back plate 53 is fixed to the surface of the first pressure cuff 52 on the wrist 300 side by double-sided tape, adhesive, or the like. The back plate 53 is made of a resin material. The back plate 53 is formed, for example, in the shape of a rectangular plate that is long in one direction. Note that the back plate 53 may be configured to be divided, that is, formed by arranging a plurality of rectangular pieces in one direction. The back plate 53 has shape-following properties.

[0075] Here, shape conformability refers to the ability of the back plate 53 to deform to follow the shape of the contacted portion of the wrist 300 on which it is placed, and the contacted portion of the wrist 300 is the area of ​​the wrist 300 that comes into contact with the back plate 53, and contact here includes both direct contact with the back plate 53 and indirect contact via the sensing cuff 54 of the back plate 53.

[0076] The sensing cuff 54 is fixed to the main surface of the back plate 53 on the wrist side. The sensing cuff 54 comes into direct contact with the area of ​​the wrist 300 where the arteries 311, 312 are present, or indirectly through a cover or the like. The sensing cuff 54 is formed in a rectangular shape that is long in one direction. The sensing cuff 54 may be configured to come into contact with the area of ​​the wrist 300 where one of the arteries 311, 312 is present. The sensing cuff 54 is the same as or smaller than the first pressing cuff 52 in the longitudinal direction. The sensing cuff 54 is the same as or smaller than the first pressing cuff 52 in the transverse direction. The sensing cuff 54 has the same shape as the back plate 53, or is smaller than the back plate 53, or is larger than the back plate 53 in the longitudinal direction and width direction of the back plate 53. The sensing cuff 54 is inflated to press an area on the palm side of the wrist where an artery is present. The sensing cuff 54 is pressed against the living body via the back plate 53 by the inflated first pressure cuff 52.

[0077] As a specific example, the sensing cuff 54 includes an air bag 81, a flow path body 82 fluidly connected to the air bag 81, and a connection portion 83 such as a nipple provided on the flow path body 82. The air bag 81 and the flow path body 82 are formed into a bag shape by thermal welding or the like of a plurality of sheet members. The sheet members forming the air bag 81 and the flow path body 82 are formed of, for example, a thermoplastic elastomer. Here, the thermoplastic elastomer is, for example, TPU.

[0078] Here, air bag 81 is a bag-like structure, and in this embodiment, an air bag will be used for explanation since blood pressure measuring device 1 is configured to use air by pump 14, but when a fluid other than air is used, the bag-like structure may be a fluid bag that expands with the fluid, etc. Air bag 81 is configured in a rectangular shape that is long in one direction.

[0079] The flow path body 82 is provided integrally with, for example, a part of one edge portion in the longitudinal direction of the air bag 81. The flow path body 82 is formed by a part of two sheet members out of the multiple sheet members forming the air bag 81. The flow path body 82 is formed in a shape that is elongated in one direction with a width smaller than the width of the air bag 81 in the short direction. A connection portion 83 is provided integrally with the tip of the flow path body 82. The flow path body 82 is connected to the fluid circuit 24 via the connection portion 83, and forms a flow path between the fluid circuit 24 and the air bag 81. The thickness of the flow path body 82 when inflated is smaller than the thickness of the air bag 81 when inflated.

[0080] For example, three connection parts 83 are provided. The three connection parts 83 are connected to three holes 31b3 formed at the end of the bottom part 31b on the side from which the first cuff structure 4 projects. The three connection parts 83 are connected to the fluid circuit 24.

[0081] Specific examples of second cuff structure 5 will be described below with reference to Figures 1 to 4 and 6 to 8. As shown in Figures 1 to 4 and 6 to 8, second cuff structure 5 includes a second curler 61 and a second pressure cuff 62. Second cuff structure 5 is configured by sequentially stacking second curler 61 and second pressure cuff 62 toward wrist 300.

[0082] The second curler 61 is fixed, for example, to the bottom 31b, one end of which is provided on the wrist 300 side of the housing 11. The second curler 61 is formed in a band shape that curves to follow the circumferential direction of the wrist 300. The second curler 61 is made of a resin material. The second curler 61 is formed of a low-hardness material that is flexible and has shape retention. Here, flexibility means that the shape of the second curler 61 changes in the radial direction when an external force is applied to the second curler 61 from the band 6. Shape retention means that the second curler 61 can maintain a shape that has been previously formed when no external force is applied. That is, the second curler 61 is formed of a resin material that is not compressively deformed or does not omit compressive deformation, but has a hardness that allows elastic deformation such as bending deformation that changes the shape, particularly the curvature of the curved portion. Therefore, second curler 61 is formed to be elastically deformable so that when an external force is applied, it bends and deforms to fit the shape of the wrist on which it is worn, enlarging or reducing the internal space in which wrist 300 is placed. For example, second curler 61 is formed from a thermoplastic polyurethane resin (hereinafter referred to as TPU) or a polypropylene resin.

[0083] Moreover, the second curler 61 has one end fixed to the housing 11. The second curler 61 is formed to a length that faces at least one of the two arteries 311, 312 and overlaps the first cuff structure 4 when the blood pressure measurement device 1 is worn on the wrist 300 that has the longest circumference among the users who are expected to wear the device. Here, one of the two arteries 311, 312 is the radial artery 311, and the other is the ulnar artery 312. Preferably, the second curler 61 is formed to a length that faces the two arteries 311, 312 when the blood pressure measurement device 1 is worn on the wrist 300 that has the longest circumference among the users who are expected to wear the device. The second curler 61 is set to a length that does not make the other end contact with the device main body 3 when the blood pressure measurement device 1 is worn on the wrist 300 that has the shortest circumference among the users who are expected to wear the device. For example, the portion of second curler 61 extending from housing 11 of device body 3 is curved with a predetermined radius of curvature so as to follow the shape of one of the sides of wrist 300 and the palm side of wrist 300 .

[0084] The second press cuff 62 is fixed to the inner circumferential surface of the second curler 61 by double-sided tape, adhesive, heat welding, or the like. The second press cuff 62 is fluidly connected to the pump 14 via the fluid circuit 24. One main surface of the second press cuff 62 is fixed to the inner surface of the second curler 61. When the second press cuff 62 inflates, it presses the opposing wrist 300 and presses the overlapping first cuff structure 4 toward the wrist 300. The thickness of the second press cuff 62 when inflated is the same as or greater than the thickness of the first press cuff 52 when inflated.

[0085] The second pressure cuff 62 includes, for example, one or more air bags 91, a flow path body 92 provided at an end of the air bag 91, and a connection part 93 such as a nipple that is provided on the flow path body 92 and connected to the fluid circuit 24. Here, the air bag 91 is a bag-like structure, and in this embodiment, the blood pressure measuring device 1 is configured to use air through the pump 14, so the description will be given using an air bag, but when a fluid other than air is used, the bag-like structure may be a fluid bag that is inflated by the fluid. The air bag 91 is formed into a rectangular bag shape that is long in one direction.

[0086] The air bladder 91 is formed into a bag shape by heat welding a plurality of sheet members. For example, when the second compression cuff 62 has a configuration including a plurality of air bladders 91, the plurality of air bladders 91 are stacked and integrally formed by welding or the like, and are fluidly continuous. The sheet member forming the air bladder 91 is formed of, for example, a thermoplastic elastomer. Here, the thermoplastic elastomer is, for example, TPU.

[0087] The flow path body 92 is provided integrally with, for example, a part of one edge portion in the longitudinal direction of the air bag 91. The flow path body 92 is formed by a part of two sheet members out of the multiple sheet members forming the air bag 91. The flow path body 92 is formed in a shape that is elongated in one direction with a width smaller than the width of the air bag 91 in the short direction. A connection portion 93 is provided integrally with the tip of the flow path body 92. The flow path body 92 is connected to the fluid circuit 24 via the connection portion 93, and forms a flow path between the fluid circuit 24 and the air bag 71. The thickness of the flow path body 92 when inflated is smaller than the thickness of the air bag 91 when inflated.

[0088] For example, there are two connection parts 93. The two connection parts 93 are connected to the fluid circuit 24 via two holes 31b3 formed in the bottom part 31b.

[0089] For example, the connection portion 93 is connected to two of the three holes 31b3 formed at the end of the bottom portion 31b on the side from which the second cuff structure 5 projects.

[0090] The first and second pressure cuffs 52 and 62 of the first and second cuff structures 4 and 5 thus configured are formed to a length such that, when the blood pressure measuring device 1 is attached to the wrist 300 having the maximum circumference, the inflatable portion of the air bag 71 of the first pressure cuff 52 covers at least one of the two arteries 311, 312, and the air bag 91 of the second pressure cuff 62 can overlap the air bag 71. The air bag 91 of the second pressure cuff 62 is formed to a length such that, when the blood pressure measuring device 1 is attached to the wrist 300 having the maximum circumference and overlaps the air bag 71 of the first pressure cuff 52, the end edge of the air bag 91 on the opposite side to the flow path body 92 does not overlap the air bag 71 of the first pressure cuff 52 on the artery covered by the air bag 71 of the first pressure cuff 52. That is, when the blood pressure measuring device 1 is attached to the wrist 300 having the maximum circumference and the air bag 91 of the second pressure cuff 62 overlaps with the air bag 71 of the first pressure cuff 52, the length of the air bag 91 of the second pressure cuff 62 is set so that the inflating portion of the air bag 91 of the second pressure cuff 62 overlaps with the air bag 71 of the first pressure cuff 52 on the artery covered by the air bag 71 of the first pressure cuff 52.

[0091] The band 6 is formed in a belt shape on the outer periphery of the first cuff structure 4 and the second cuff structure 5 on the side opposite the wrist 300. The band 6 is not fixed to the first cuff structure 4 and the second cuff structure 5. One end of the band 6 is fixed to one of the loop portions 31c. The band 6 also has a pair of hook-and-loop fasteners 6a, one of which has a hook and the other has a loop, which engage with each other to fix the band 6 with its end inserted in the other loop portion 31c. The band 6 also has a tab 6b at the other end so that the user can easily grasp it.

[0092] For example, the band 6 is fixed to the loop portion 31c formed on the side from which the second cuff structure 5 extends, inserted into the loop portion 31c formed on the side from which the first cuff structure 4 extends, and then folded back. The band 6 has a length that allows it to be inserted into the loop portion 31c provided on the outer case 31 when the blood pressure measurement device 1 is attached to the wrist 300 having the maximum circumference that is expected to be attached. The hook-and-loop fastener 6a is provided on the band 6 with a length and arrangement that allows the band 6 to be folded back and fastened on the wrist 300 having the maximum and minimum circumferences that are expected to be attached. By pulling the end of the band 6 folded back at the loop portion 31c in a direction away from the loop portion 31c, the blood pressure measurement device 1 is attached to the wrist 300 in a state in which the first cuff structure 4 and the second cuff structure 5 are wrapped around the wrist 300, as shown in FIG. 3. Since the band 6 is fixed by the hook-and-loop fastener 6a, the first pressure cuff 52 and the second pressure cuff 62 are prevented from expanding outwardly on the opposite side to the wrist when inflated, so that the first pressure cuff 52 and the second pressure cuff 62 can press against the wrist. This allows blood pressure measurement by a known oscillometric method.

[0093] The restricting member 7 restricts the relative movement in the width direction between the first cuff structure 4 and / or the second cuff structure 5 and the band 6. Here, the width direction is a direction perpendicular to the wrapping direction of the band 6 around the wrist 300, in other words, a direction perpendicular to the longitudinal direction of the first cuff structure 4, the second cuff structure 5 and the band 6.

[0094] In this embodiment, the blood pressure measuring device 1 has a first cuff structure 4 and a second cuff structure 5, and the band 6 is not fixed to the first cuff structure 4 and the second cuff structure 5. Therefore, an example is described in which the regulating member 7 regulates the relative movement of the first cuff structure 4, the second cuff structure 5 and the band 6 in the width direction.

[0095] As shown in FIGS. 2, 12 and 13, the regulating member 7 includes a sheet 7a, a first hook-and-loop fastener 7b, a second hook-and-loop fastener 7c, a first regulating portion 7d, and a second regulating portion 7e.

[0096] The sheet 7a is formed in a plate shape long in one direction. The width of the sheet 7a is smaller than the widths of the first cuff structure 4, the second cuff structure 5, and the band 6. The sheet 7a is formed of, for example, a resin material. One end of the sheet 7a is fixed to the outer surface of the end of the first cuff structure 4 on the device main body 3 side. For example, the sheet 7a is fixed to the outer surface of a portion of the first curler 51 of the first cuff structure 4 adjacent to the device main body 3. The sheet 7a and the first cuff structure 4 are fixed by, for example, welding, adhesion with double-sided tape or adhesive, or joining with a hook-and-loop fastener. The sheet 7a is formed so as to be separable from the first cuff structure 4, with the one end fixed to the first cuff structure 4 as a base point.

[0097] The first hook-and-loop fastener 7b is provided on the outer surface of the end (tip) of the first cuff structure 4 opposite to the device body 3 side.

[0098] The second hook-and-loop fastener 7c is provided, for example, on the inner surface of the end (tip) of the sheet 7a opposite to the device body 3 side, which is the wrist 300 side. The first hook-and-loop fastener 7b and the second hook-and-loop fastener 7c are formed to be joinable. The first hook-and-loop fastener 7b and the second hook-and-loop fastener 7c function as fixing members that fix the sheet 7a and the first cuff structure 4. Note that the fixing member is not limited to a hook-and-loop fastener, and other examples include a magnetic sheet, a snap fit, etc.

[0099] The first restricting portion 7d restricts the relative movement of the first cuff structure 4 and the band 6 in the width direction, and allows the relative movement of the first cuff structure 4 and the band 6 in the longitudinal direction without restricting it. Also, for example, the first restricting portion 7d restricts the relative movement of the first cuff structure 4 and the band 6 in the direction perpendicular to the width direction and the longitudinal direction of the first cuff structure 4 and the band 6, that is, in the direction along the opposing direction of the first cuff structure 4 and the band 6, in the direction in which the first cuff structure 4 and the band 6 move apart. The first restricting portion 7d restricts the relative movement of the first cuff structure 4 and the band 6 in the width direction and the direction in which they move apart by engaging with the sheet 7a fixed to the first cuff structure 4.

[0100] For example, the first restricting portion 7d is formed in an annular shape and is formed so that the sheet 7a can be inserted therein. The first restricting portion 7d is provided on the inner surface of the band 6. For example, the first restricting portion 7d is formed by fixing a sheet-like member in an annular shape to the inner surface of the band 6.

[0101] The second restricting portion 7e restricts the relative movement of the first cuff structure 4 and the second cuff structure 5 in the width direction, and allows the relative movement of the first cuff structure 4 and the band 6 in the longitudinal direction without restricting it. In addition, for example, the second restricting portion 7e restricts the relative movement of the first cuff structure 4 and the second cuff structure 5 in the direction perpendicular to the width direction and the longitudinal direction of the first cuff structure 4 and the second cuff structure 5, that is, in the direction along the opposing direction of the first cuff structure 4 and the second cuff structure 5, in the direction in which the first cuff structure 4 and the second cuff structure 5 move apart. The second restricting portion 7e restricts the relative movement of the first cuff structure 4 and the second cuff structure 5 in the width direction and the direction in which they move apart by engaging with the sheet 7a fixed to the first cuff structure 4. Therefore, the second regulating portion 7e, together with the sheet 7a and the first regulating portion 7d, regulates the movement of the first cuff structure 4, the second cuff structure 5 and the band 6 in the width direction, as well as in the direction in which the first cuff structure 4 and the second cuff structure 5 face each other and the band 6 face each other.

[0102] For example, the second restricting portion 7e is formed in an annular shape and is formed so that the sheet 7a can be inserted therein. The second restricting portion 7e is provided on the inner surface of the band 6. For example, the second restricting portion 7e is formed by fixing a sheet-like member in an annular shape to the inner surface of the band 6.

[0103] The length of the first restricting portion 7d and the second restricting portion 7e in the longitudinal direction of the band 6 and the second cuff structure 5 can be appropriately set based on the ease of relative movement of the first cuff structure 4, the second cuff structure 5, and the band 6 in the width direction, the stability of the posture of the first cuff structure 4, the second cuff structure 5, and the band 6, etc. That is, by increasing the length of the first restricting portion 7d and the second restricting portion 7e in the longitudinal direction of the band 6 and the second cuff structure 5, the length of contact with the sheet 7a in the width direction can be secured, so that the sheet 7a can be stably held in the width direction. In addition, by shortening the length of the first restricting portion 7d and the second restricting portion 7e in the longitudinal direction of the band 6 and the second cuff structure 5, the sheet 7a can be easily inserted and the frictional force in the sliding movement with the sheet 7a can be reduced, so that the first cuff structure 4, the second cuff structure 5, and the band 6 can easily and stably move relatively in the longitudinal direction.

[0104] The width of the opening into which the sheet 7a of the first restricting portion 7d and the second restricting portion 7e is inserted is larger than the width of the sheet 7a. The width of the opening into which the sheet 7a of the first restricting portion 7d and the second restricting portion 7e is inserted can be appropriately set based on the ease of inserting the sheet 7a, the ease of relative movement in the width direction of the first cuff structure 4, the second cuff structure 5, and the band 6, the stability of the postures of the first cuff structure 4, the second cuff structure 5, and the band 6, and the like.

[0105] That is, the larger the gap between sheet 7a and restricting portions 7d, 7e in the width direction, the easier it is to insert and move sheet 7a, and the easier it is to move the first cuff structure 4, second cuff structure 5, and band 6 relative to each other in the width direction, but the relative movable range of first cuff structure 4, second cuff structure 5, and band 6 in the width direction increases. The smaller the gap between sheet 7a and restricting portions 7d, 7e in the width direction, the lower the ease of insertion and movement of sheet 7a, and the more difficult it is to move the first cuff structure 4, second cuff structure 5, and band 6 relative to each other in the width direction, but the relative movable range of first cuff structure 4, second cuff structure 5, and band 6 in the width direction becomes smaller, and the relative movement in the width direction can be suppressed.

[0106] For these reasons, the length and width of the first restricting portion 7d and the second restricting portion 7e can be set according to the desired function, etc. For example, the first restricting portion 7d and the second restricting portion 7e may have the same shape, or the first restricting portion 7d and the second restricting portion 7e may have different shapes, such as by making one of the first restricting portion 7d and the second restricting portion 7e longer in length and / or width than the other restricting portion.

[0107] The length of the sheet 7a, the positions of the pair of hook-and-loop fasteners 7b, 7c, the positions of the first restricting portion 7d, and the second restricting portion 7e are set to lengths and / or positions that allow the sheet 7a to be inserted into the first restricting portion 7d and the second restricting portion 7e and the sheet 7a and the first cuff structure 4 to be fixed by the hook-and-loop fasteners 7b, 7c when the blood pressure measuring device 1 is attached to the wrist 300 having the minimum and maximum circumferences assumed to be attached and the band 6 is wrapped around the wrist 300 having the minimum and maximum circumferences assumed to be attached. The length of the sheet 7a, the positions of the pair of hook-and-loop fasteners 7b, 7c, the positions of the first restricting portion 7d, and the second restricting portion 7e are set to lengths and / or positions that allow the first cuff structure 4 and the sheet 7a joined by the pair of hook-and-loop fasteners 7b, 7c not to interfere with the second restricting portion 7e and the first cuff structure 4 in the longitudinal direction when the blood pressure measuring device 1 is attached to the wrist 300 having the minimum and maximum circumferences assumed to be attached. In addition, the first restriction portion 7d is positioned at a position that does not come into contact with the end of the second cuff structure 5 when the blood pressure measurement device 1 is worn on a wrist 300 having the minimum and maximum circumferences expected for wearing.

[0108] That is, when the blood pressure measuring device 1 is worn on the wrist 300 having the minimum and maximum circumferences expected for wearing, the restricting member 7 can move the first cuff structure 4 and the second cuff structure 5 to a position suitable for wearing on the wrist 300. Furthermore, the restricting member 7 does not interfere with the second restricting portion 7e provided on the band 6 and the second cuff structure 5, and does not restrict the relative movement of the second cuff structure 5 and the band 6 in the wrapping direction around the wrist 300.

[0109] 12 and 13, the restricting member 7 releases the hook-and-loop fasteners 7b and 7c provided on the first cuff structure 4 and the sheet 7a, and inserts the sheet 7a into the first restricting portion 7d and the second restricting portion 7e while separating the first cuff structure 4 from the sheet 7a. Then, the hook-and-loop fasteners 7c of the sheet 7a inserted into the first restricting portion 7d and the second restricting portion 7e are joined to the hook-and-loop fasteners 7b of the first cuff structure 4. In this way, the restricting member 7 restricts the relative movement of the first cuff structure 4, the second cuff structure 5, and the band 6 in the width direction while allowing the relative movement of the first cuff structure 4, the second cuff structure 5, and the band 6 in the longitudinal direction.

[0110] Next, an example of the fluid configuration of the device body 3, the first cuff structure 4, the second cuff structure 5, and the fluid circuit 24 of the blood pressure measuring device 1 configured as above will be described with reference to FIG.

[0111] The first pressing cuff 52 is connected to the pump 14, for example, via the flow path plate 24a. The first pressing cuff 52 and the pump 14 are connected to the valve 16, for example, via the flow path plate 24a. The first pressing cuff 52 is connected to the second pressing cuff 62, for example, via the flow path plate 24a. The first pressing cuff 52 is connected to the sensing cuff 54, for example, via the flow path plate 24a and an orifice 24b provided in the flow path plate 24a. The sensing cuff 54 is connected to the pressure sensor 17, for example, via the flow path plate 24a. The sensing cuff 54 is connected to the atmosphere, for example, via the flow path plate 24a and an orifice 24b provided in the flow path plate 24a. Here, the orifice 24b between the first pressure cuff 52 and the sensing cuff 54, and the orifice 24b between the sensing cuff 54 and the atmosphere are set to flow resistances that result in a desired pressure difference between the first pressure cuff 52 and the sensing cuff 54.

[0112] Next, an example of the power transmitting device 100 that transmits power to the charging circuit section 21 of the device main body 3 will be described. 5, the power transmitting device 100 includes a power source 101, a power transmitting unit 102, an antenna unit 103, and a power transmitting terminal 104. Note that the power transmitting device 100 may include either the antenna unit 103 or the power transmitting terminal 104. The power source 101 is, for example, an AC adapter connected to a commercial power source or the like. The power source 101 converts AC power input from the commercial power source into DC power, and supplies the DC power to the power transmitting unit 102.

[0113] The power transmitting unit 102 generates AC power as transmission power from the DC power supplied from the power source 101, and supplies the AC power to the antenna unit 103. The power transmitting unit 102 generates AC power having a frequency that is the same as or approximately the same as the resonant frequency of a power transmitting resonant circuit formed by the antenna unit 103, for example.

[0114] The antenna unit 103 is, for example, a power transmitting coil serving as a power transmitting resonant circuit. The power transmitting surface of the antenna unit 103 is formed in a planar shape. The antenna unit 103 transmits power to the antenna unit 211 of the device body 3. The antenna unit 103 includes, for example, a resonance capacitor, and constitutes a power transmitting resonant circuit.

[0115] The power transmitting terminal 104 is formed so as to come into contact with a charging terminal 214 provided on the device body 3 and be fixable to the charging terminal 214 .

[0116] The blood pressure measurement device 1 configured in this manner can restrict the movement of the first cuff structure 4 and the band 6 in the width direction by the restricting member 7, and can also restrict the movement of the first cuff structure 4 and the second cuff structure 5 in the width direction. Therefore, the blood pressure measurement device 1 can prevent the first cuff structure 4, the second cuff structure 5, and the band 6 from shifting in the width direction when the blood pressure measurement device 1 is attached to the wrist 300 and when the first cuff structure 4 and the second cuff structure 5 are inflated. Therefore, the band 6 can stably press the first cuff structure 4 and the second cuff structure 5 toward the wrist 300, so that the first cuff structure 4 and the second cuff structure 5 can suitably compress the wrist 300. Therefore, the blood pressure measurement device 1 has good blood pressure measurement accuracy.

[0117] In addition, since the restricting member 7 does not restrict the longitudinal movement of the first cuff structure 4, the second cuff structure 5, and the band 6, by wrapping the band 6 around the wrist 300, the first cuff structure 4 and the second cuff structure 5 also move in the longitudinal direction, and the first cuff structure 4 and the second cuff structure 5 can be suitably wrapped around the wrist 300. In addition, when the blood pressure measuring device 1 is worn on the wrist 300 having the minimum and maximum circumferences assumed for wearing, the restricting member 7 is arranged so that the first restricting portion 7d provided on the band 6 and the second cuff structure 5 do not interfere with each other, and thus does not hinder the relative longitudinal movement of the first cuff structure 4, the second cuff structure 5, and the band 6. Therefore, the blood pressure measuring device 1 can easily adjust the relative positions of the first cuff structure 4, the second cuff structure 5, and the band 6.

[0118] Moreover, the blood pressure measuring device 1 has a first cuff structure 4 and a second cuff structure 5, which are fluidly connected and extend from the device body 3, disposed on both sides in one direction of the device body 3. The device body 3 also has a protrusion (sensor portion) 31b1 as a space for arranging at least one of the biosensor 20 and the charging terminal 214 on the bottom 31b of the housing 11, which is the back side, at a position away from the first cuff structure 4 and the second cuff structure 5, for example, on the center side of the bottom 31b. This allows the first cuff structure 4 and the second cuff structure 5, and at least one of the biosensor 20 and the charging terminal 214 to be disposed on the back side of the device body 3.

[0119] The first cuff structure 4 and the second cuff structure 5 are fluidly connected via the fluid circuit 24 including the flow path plate 24a. The first cuff structure 4 and the second cuff structure 5 may be directly fluidly connected to the first pressure cuff 52 and the second pressure cuff 62. With this configuration, even if the first cuff structure 4 and the second cuff structure 5 are provided and fixed to the housing 11 apart in one direction, the first cuff structure 4 and the second cuff structure 5 can be fluidly continuous.

[0120] Furthermore, when the blood pressure measuring device 1 is worn on the wrist 300 having the maximum circumference that is expected for wearing, the air bag 71 of the first pressure cuff 52 covers the area in which at least one of the two arteries 311, 312 is located, and the air bag 91 of the second pressure cuff 62 can overlap at least a portion of the air bag 71 of the first pressure cuff 52.

[0121] Therefore, since the wrist 300 can be pressed by the first pressure cuff 52 and the second pressure cuff 62, sufficient pressure force can be secured to compress the artery even if the air bag 71 of the first pressure cuff 52 and the air bag 91 of the second pressure cuff 62 are not disposed on the back surface of the device main body 3.

[0122] In this way, when the blood pressure measurement device 1 is worn on the wrist 300 having the maximum circumference that is assumed for wearing, the air bag 71 of the first pressure cuff 52 and the air bag 91 of the second pressure cuff 62 can overlap by a predetermined length. Moreover, when the blood pressure measurement device 1 is worn on the wrist 300 having the minimum circumference, the first cuff structure 4 and the second cuff structure 5 are of a length that does not contact the device main body 3. Moreover, the first cuff structure 4 and the second cuff structure 5 are not directly joined to the band 6.

[0123] With these configurations, the blood pressure measurement device 1 is capable of suitably pressing the artery with the first pressure cuff 52 and the second pressure cuff 62 because the air bladders 71, 91 of the first pressure cuff 52 and the second pressure cuff 62 are inflated in an overlapping manner. Therefore, the blood pressure measurement device 1 is capable of arranging the biosensor 20 on the back surface side of the device main body 3, and is capable of measuring blood pressure with high accuracy even if the air bladders 71, 91 of the first pressure cuff 52 and the second pressure cuff 62 are not arranged on the back surface of the device main body 3.

[0124] Moreover, the housing 11 has the ventilation opening 31b6 covered with the waterproof moisture-permeable sheet 31b7 in the bottom 31b, which allows ventilation inside the housing 11. Moreover, by arranging the ventilation opening 31b6 and the first cuff structure 4 and the second cuff structure 5 at positions apart from each other in a portion other than the protruding portion 31b1 of the bottom 31b, the ventilation opening 31b6 can be prevented from being blocked by the first cuff structure 4 and the second cuff structure 5. Moreover, by providing the ventilation opening 31b6 at a position covered by the cuff cover 33 arranged with a gap from the bottom 31b, the ventilation opening 31b6 is protected by the cuff cover 33. Thus, the blood pressure measurement device 1 can prevent the ventilation opening 31b6 and the waterproof moisture-permeable sheet 31b7 from becoming dirty, and can prevent the ventilation function from being impaired.

[0125] In addition, the ends of the first cuff structure 4 and the second cuff structure 5 that are disposed on the bottom 31b of the housing 11 are covered by the cuff cover 33, and therefore movement in a direction away from the bottom 31b is restricted by the cuff cover 33. This makes it possible to prevent the first cuff structure 4 and the second cuff structure 5 from easily coming off the device main body 3.

[0126] Moreover, the blood pressure measurement device 1 is configured such that the various sensors 20a to 20c as the biosensor 20 and the charging terminal 214 are provided on the bottom 31b of the device body 3. Therefore, the device body 3 does not need to provide the biosensor 20 and the charging terminal 214 at a position far from the device body from the substrate 25 provided inside the housing 11, and it is possible to simplify wiring, etc., and the degree of freedom of arrangement is high. In addition, the biosensor 20 is provided in the housing 11 with high rigidity, and when the blood pressure measurement device 1 is worn on the wrist 300, it can stably contact the wrist 300, so that the biosensor 20 can suitably acquire bioinformation. In addition, by providing the charging terminal 214 on the bottom 31b, when the blood pressure measurement device 1 is removed from the wrist 300, the charging terminal 214 is exposed to the outside, making it easy to charge using the charging terminal 214.

[0127] In addition, in the blood pressure measurement device 1, the first pressure cuff 52 and the second pressure cuff 62 are fluidly connected via the fluid circuit 24 provided in the device main body 3, thereby simplifying the arrangement of the first pressure cuff 52 and the second pressure cuff 62 at the bottom 31b.

[0128] The blood pressure measuring device 1 configured in this manner allows the first cuff structure 4, the second cuff structure 5 and the band 6 to move in the longitudinal direction by the regulating member 7, while regulating their movement in the width direction, thereby making it possible to easily adjust the relative positions of the first cuff structure 4, the second cuff structure 5 and the band 6 and preventing the first cuff structure 4, the second cuff structure 5 and the band 6 from shifting in the width direction.

[0129] The present invention is not limited to the above-described embodiment. For example, in the above-described example, the first pressure cuff 52 of the first cuff structure 4 and the second pressure cuff 62 of the second cuff structure 5 are connected to, for example, the flow path plate 24a of the fluid circuit 24 via the flow path bodies 72, 92 and the connection parts 73, 93 formed thereon, respectively, and are fluidically connected in the fluid circuit 24.

[0130] However, the first pressure cuff 52 and the second pressure cuff 62 may be configured to be directly connected to each other in a fluidic manner. For example, as shown in Fig. 14, the first cuff structure 4 and the second cuff structure 5 may be configured such that the flow path body 72 of the first pressure cuff 52 and the flow path body 92 of the second pressure cuff 62 are fluidly continuous and connected to the fluid circuit 24 by a connection portion 93 formed on the flow path body 72 or the flow path body 92. With this configuration, the first pressure cuff 52 and the second pressure cuff 62 are connected to each other while avoiding the protruding portion 31b1, which is the sensor portion, and therefore it is possible to prevent the first pressure cuff 52 and the second pressure cuff 62 from interfering with the protruding portion 31b1 and inhibiting the functions of the biosensor 20 and the charging terminal 214 provided on the protruding portion 31b1.

[0131] In the above-described example, the first cuff structure 4 is configured to have a first curler 51, a first pressure cuff 52, a back plate 53 and a sensing cuff 54, and the second cuff structure 5 is configured to have a second curler 61 and a second pressure cuff 62.

[0132] However, first cuff structure 4 may be configured to not have at least one of first curler 51 and back plate 53, and second cuff structure 5 may be configured to not have second curler 61. When first cuff structure 4 is configured to not have first curler 51, sheet 7a and first hook-and-loop fastener 7b of restricting member 7 may be provided on the outer surface of the tip of air bag 71 of first pressure cuff 52 on the side opposite to flow path body 72.

[0133] 14 and 15, the first cuff structure 4 may not have the sensing cuff 54. For example, when the first cuff structure 4 does not have the sensing cuff 54, the pressure sensor 17 may be fluidly connected to at least the first pressing cuff 52, and the blood pressure may be obtained from the pressure of the first pressing cuff 52, as shown in Fig. 16 and 17. Even when the first cuff structure 4 does not have the sensing cuff 54, the first pressing cuff 52 and the second pressing cuff 62 may be fluidly connected via the fluid circuit 24 in the device main body 3, as shown in Fig. 17, or, for example, the flow path body 72 and the flow path body 92 may be fluidly connected, as shown in Fig. 18.

[0134] In the above example, the band 6 is not fixed to the first cuff structure 4 and the second cuff structure 5. However, the band 6 may be fixed to the second cuff structure 5 that is on the outer side when the first cuff structure 4 and the second cuff structure 5 overlap. In other words, even if the band 6 is fixed to the second cuff structure 5, if the first cuff structure 4 that is closer to the wrist 300 than the second cuff structure 5 is not fixed to the band 6, the first cuff structure 4 and the second cuff structure 5 can be tightened and tightly attached to the wrist 300 when the band 6 is tightened.

[0135] In the above example, the device main body 3 is configured to have the PPG sensor 20a, the SpO2 sensor 20b, and the ECG sensor 20c provided as the biosensor 20 on the bottom 31b of the outer case 31 forming the back side of the housing 11. However, the biosensor 20 may be any one of the PPG sensor 20a, the SpO2 sensor 20b, and the ECG sensor 20c, and may have a sensor for acquiring other bioinformation in addition to or instead of these sensors 20a to 20c.

[0136] In the above example, the blood pressure measuring device 1 has been described as having a configuration including the first cuff structure 4 and the second cuff structure 5 that can overlap the first cuff structure 4 as a pair of overlapping cuffs, but is not limited thereto. For example, the blood pressure measuring device 1 may have a configuration including the device main body 3, the first cuff structure 4, the band 6, and the restricting member 7 without having the second cuff structure 5. In the case of such a blood pressure measuring device 1, the restricting member 7 may be configured not to have the second restricting portion 7e.

[0137] In the above-mentioned example, the restricting member 7 has a sheet 7a, a pair of hook-and-loop fasteners 7b, 7c, a first restricting portion 7d, and a second restricting portion 7e, but is not limited thereto. That is, the restricting member 7 may be configured to restrict the movement of the first cuff structure 4 and / or the second cuff structure 5 and the band 6 in the width direction and to allow the movement in the longitudinal direction. For example, as in another example of the restricting member 7A shown in FIG. 19, a protrusion 7f that abuts against the side surface of the band 6 in the width direction may be provided on both ends of the first curler 51 and / or the second curler 61 of the first cuff structure 4 and / or the second cuff structure 5, and the protrusion 7f may abut against the side surface of the band 6. Note that the restricting member may be configured by a protrusion provided on one of the first curler 51 and / or the second curler 61 and the band 6, and an opening provided on the other. That is, the restricting member may be configured to have a member or a portion that abuts against the first cuff structure 4 and / or the second cuff structure 5 and the band 6 in the width direction.

[0138] That is, the present invention is not limited to the above embodiment, and can be modified in various ways in the implementation stage without departing from the gist of the invention. In addition, each embodiment may be implemented in appropriate combination as much as possible, and in that case, the combined effect can be obtained. Furthermore, the above embodiment includes inventions at various stages, and various inventions can be extracted by appropriate combinations of the multiple constituent elements disclosed. Note that the present invention is not limited to the above embodiment, and can be modified in various ways in the implementation stage without departing from the gist of the invention. In addition, each embodiment may be implemented in appropriate combination, and in that case, the combined effect can be obtained. Furthermore, the above embodiment includes various inventions, and various inventions can be extracted by combinations selected from the multiple constituent elements disclosed. For example, if some constituent elements are deleted from all the constituent elements shown in the embodiment, and the problem can be solved and an effect can be obtained, the configuration from which the constituent elements are deleted can be extracted as an invention. [Explanation of symbols]

[0139] 1. Blood pressure measuring device 3. Device body 4…First cuff structure 5…Second cuff structure 6. Band 6a…Velcro 6b…Knob 7. Regulatory components 7a…Sheet 7b…First hook-and-loop fastener (fixing member) 7c…Second hook-and-loop fastener (fixing member) 7d...1st Regulatory Department 7e…Second Regulatory Department 7f…Protrusion 11…Housing 12...Display section 13...Operation unit 14…Pump 15...Accelerometer 16...Valve 17...Pressure sensor 18...Battery 19…Communications Department 20...Biometric sensor 20a…PPG sensor 20b…SpO2 sensor 20c…ECG sensor 20c1...electrocardiogram electrode 20d…1st LED 20e…2nd LED 20f…1st PD 20g…2nd PD 21...Charging circuit section 22…Memory 23…Processor 24…Fluid circuit 24a...Flow path plate 24b…Orifice 25…Substrate 25a…Control board 25b…Sensor main board 25c…Sensor sub-board 31…Outer case 31a...peripheral wall part 31b…Bottom (back side) 31b1...protrusion (sensor part) 31b1…Sensor section 31b2…Window section 31b3…hole 31b4…Aperture 31b5…Cover 31b6…Ventilation hole 31b7…Waterproof and breathable sheet 31c…Loop section 31d…Aperture 32…Windshield 33…Cuff cover 33a…Aperture 33b…hole 41...Button 43...Touch panel 51…1st Carla 52…First pressure cuff 53...Backboard 54…Sensing cuff 61…2nd Carla 62…Second compression cuff 71...Air bag 72...Flow path body 73…Connection 81...Air bag 82...Flow path body 83…Connection 91...Air bag 92...Flow path body 93…Connection 100...Power transmission device 101…Power supply 102...Power transmission section 103…Antenna section 104...Power transmission terminal 211…Antenna section 212…Power receiving unit 213...Charging part 214…Charging terminal 214a...Terminal 300…Wrist 311...Radial artery 312…ulnar artery

Claims

1. A device body, a first cuff provided on the device body and configured to press against a living body; a band provided on an outer surface side of the first cuff and wrapped around the living body; a restricting member that restricts relative movement of the first cuff and the band in a width direction and allows relative movement of the first cuff and the band in a longitudinal direction; Equipped with The regulating member is a sheet fixed to the device body side of the first cuff and separable from the distal end side of the first cuff; a fixing member provided on a portion of the sheet and the first cuff that faces each other, the fixing member fixing the sheet and the first cuff; a first restricting portion provided on the band, into which the sheet can be inserted and which restricts movement of the sheet in a width direction; A blood pressure measuring device comprising:

2. 2. The blood pressure measurement device according to claim 1, wherein the sheet, the fixing member, and the first restricting portion are formed to have a length and / or position that allows the sheet to be inserted into the first restricting portion and the sheet and the first cuff to be fixed by the fixing member when the band is wrapped around the living body having a minimum circumference and a maximum circumference intended for wearing.

3. A device body, a first cuff provided on the device body and configured to press against a living body; a band provided on an outer surface side of the first cuff and wrapped around the living body; a restricting member that restricts relative movement of the first cuff and the band in a width direction and allows relative movement of the first cuff and the band in a longitudinal direction; Equipped with a second cuff that is outside the first cuff and can overlap the first cuff; The restricting member restricts relative movement in the width direction between the second cuff and at least one of the first cuff and the band.

4. The regulating member is a sheet fixed to the device body side of the first cuff and separable from the distal end side of the first cuff; a fixing member provided on a portion of the sheet and the first cuff that faces each other; a first restricting portion provided on an inner surface of the band, into which the sheet can be inserted and which restricts movement of the sheet in a width direction; a second restriction portion provided on an inner surface of the second cuff, into which the sheet can be inserted and which restricts movement of the sheet in a width direction; The blood pressure measurement device according to claim 3 , comprising:

5. 5. The blood pressure measurement device according to claim 4, wherein the sheet, the fixing member, the first restricting portion, and the second restricting portion are formed to have lengths and / or positions that allow the sheet to be inserted into the first restricting portion and the second restricting portion and the sheet and the first cuff to be fixed by the fixing member when the band is wrapped around the living body having a minimum circumference and a maximum circumference intended for wearing.

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