Blood pressure measuring device

Abstract

A blood pressure measurement device (1) is provided with: a device main body (3); a first cuff (4) that is provided on the device main body (3) and that presses the living body (300); a strap (6) that is provided on the outer surface side of the first cuff (4) and that is wound around a living body (300); and a regulating member (7) that regulates the relative movement of the first cuff (4) and the strap (6) in the width direction and enables the relative movement of the first cuff (4) and the strap (6) in the longitudinal direction.

Description

Technical Field

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

[0002] In recent years, blood pressure measurement devices have become increasingly popular as a means of confirming health status not only in medical facilities but also at home. These devices measure blood pressure by inflating and deflating a cuff wrapped around, for example, a person's wrist. A pressure sensor detects the pressure of the cuff, thereby detecting arterial wall vibrations.

[0003] Furthermore, as disclosed in International Publication No. 2012 / 018029, a known blood pressure measurement device comprises a hook-and-loop fastener provided on the surface of a cuff to prevent the ends from shifting when the cuff is partially overlapped. Furthermore, as disclosed in International Publication No. 2022 / 111377, a known blood pressure measurement device comprises a cuff that is positioned on the cuff by sliding the cuff to adjust its position and then inserting a pin provided on the cuff into a slot in the cuff (see, for example, Patent Document 2).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: International Publication No. 2012 / 018029

[0007] Patent Document 2: International Publication No. 2022 / 111377 Summary of the Invention

[0008] Problems to be solved by the invention

[0009] In the blood pressure measurement device described in International Publication No. 2012 / 018029, it is difficult to adjust the cuff's wrapping strength after the device is attached to the body. Furthermore, in the blood pressure measurement device described in International Publication No. 2022 / 111377, the strap is fixed to the back of the cuff. This fixes the cuff relative to the strap, making it impossible to adjust the relative position of the cuff and strap in the longitudinal direction.

[0010] Therefore, an object of the present invention is to provide a blood pressure measurement device that can easily adjust the relative positions of a cuff and a strap while preventing the cuff from shifting in the width direction.

[0011] Solutions for solving problems

[0012] According to one embodiment, a blood pressure measurement device is provided, comprising: a device body; a first cuff disposed on the device body and configured to press against a living body; a strap disposed on an outer surface of the first cuff and configured to be wrapped around the living body; and a limiting member that limits relative movement of the first cuff and the strap in a width direction and enables relative movement of the first cuff and the strap in a lengthwise direction.

[0013] According to this embodiment, the limiting member restricts relative movement of the strap and the first cuff in the width direction while allowing relative movement of the first cuff and the strap in the longitudinal direction. When the blood pressure measurement device is attached to a living subject and when the first cuff is inflated, the first cuff and the strap of the blood pressure measurement device do not shift in the width direction. Furthermore, the relative position of the first cuff and the strap in the longitudinal direction can be easily adjusted. Therefore, the blood pressure measurement device can appropriately compress the living subject through the inflation of the first cuff, thereby improving measurement accuracy.

[0014] In the blood pressure measurement device of the above-mentioned embodiment, the limiting member includes: a sheet fixed to the device body side of the first cuff and capable of being separated from the front end side of the first cuff; a fixing member provided on a portion of the sheet and the first cuff facing each other, fixing the sheet and the first cuff; and a first limiting portion provided on the strap, capable of allowing the sheet to be inserted and limiting the movement of the sheet in the width direction.

[0015] According to this aspect, the blood pressure measurement device can restrict movement of the first cuff in a direction away from the strap by fixing the sheet inserted into the first restriction portion and the first cuff with the fixing member.

[0016] In the blood pressure measurement device of the above-mentioned embodiment, the sheet, the fixing member, and the first limiting portion are formed to have the following lengths and / or positions: when the strap is wrapped around the biological body with the minimum circumference and the maximum circumference assumed to be worn, the sheet can be inserted into the first limiting portion and the sheet and the first cuff can be fixed by the fixing member.

[0017] According to this aspect, even when the blood pressure measurement device is worn on a living body, the blood pressure measurement device can fix the piece inserted into the first restriction portion to the first cuff, thereby enabling blood pressure measurement with high measurement accuracy in the living body.

[0018] The blood pressure measurement device according to the above aspect includes a second cuff that can overlap the first cuff outside the first cuff, and the restriction member restricts relative movement of the second cuff and at least one of the first cuff and the strap in the width direction.

[0019] According to this embodiment, when the blood pressure measurement device is attached to a living body and when the first and second cuffs are inflated, the first and second cuffs of the blood pressure measurement device, as well as the strap, do not shift in the width direction. Furthermore, the relative positions of the first and second cuffs, as well as the strap, in the longitudinal direction can be easily adjusted. Consequently, the blood pressure measurement device can appropriately compress the living body through the expansion of the first and second cuffs, thereby improving measurement accuracy. Furthermore, by overlapping the first and second cuffs, the overlapping first and second cuffs can more appropriately compress the living body during inflation.

[0020] In the blood pressure measurement device of the above-mentioned embodiment, the limiting member includes: a sheet fixed to the device main body side of the first cuff and capable of being separated from the front end side of the first cuff; a fixing member provided on a portion of the sheet and the first cuff facing each other; a first limiting portion provided on the inner surface of the strap, capable of allowing the sheet to be inserted and limiting the movement of the sheet in the width direction; and a second limiting portion provided on the inner surface of the second cuff, capable of allowing the sheet to be inserted and limiting the movement of the sheet in the width direction.

[0021] According to this method, even when the blood pressure measurement device is attached to a living body to be attached, the blood pressure measurement device can fix the piece inserted into the first limiting portion and the second limiting portion to the first cuff, thereby being able to perform blood pressure measurement with high measurement accuracy in the living body to be attached.

[0022] In the blood pressure measurement device of the above-mentioned embodiment, the sheet, the fixing member, the first limiting portion, and the second limiting portion are formed to have the following lengths and / or positions: when the strap is wrapped around the biological body with the minimum circumference and the maximum circumference assumed to be worn, the sheet can be inserted into the first limiting portion and the second limiting portion, and the sheet and the first cuff can be fixed by the fixing member.

[0023] According to this method, even when the blood pressure measurement device is attached to a living body to be attached, the blood pressure measurement device can fix the piece inserted into the first limiting portion and the second limiting portion to the first cuff, thereby being able to perform blood pressure measurement with high measurement accuracy in the living body to be attached.

[0024] Effects of the Invention

[0025] According to the present invention, a blood pressure measurement device can be provided that can easily adjust the relative positions of a cuff and a strap while preventing the cuff from shifting in the width direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a perspective view showing the structure of a blood pressure measurement device according to an embodiment of the present invention.

[0027] Figure 2 It is a perspective view showing the structure of a blood pressure measurement device according to an embodiment of the present invention.

[0028] Figure 3 It is a side view showing the structure of a blood pressure measurement device according to an embodiment of the present invention.

[0029] Figure 4 This is a side view showing the structure of the blood pressure measurement device according to the embodiment of the present invention in a state where the device is worn on a wrist.

[0030] Figure 5 This is a block diagram showing the configuration of a blood pressure measurement device according to an embodiment of the present invention.

[0031] Figure 6 It is a cross-sectional view showing the main structure of a blood pressure measurement device according to an embodiment of the present invention.

[0032] Figure 7 This is a plan view showing the main configuration of the blood pressure measurement device according to the embodiment of the present invention, as viewed from the back side of the device body.

[0033] Figure 8 This is a plan view showing the main structure of the blood pressure measurement device according to the embodiment of the present invention from the back side of the device body, with some structures omitted.

[0034] Figure 9 It is a perspective view showing the exploded structure of the device main body.

[0035] Figure 10 It is a perspective view showing the exploded structure of the device main body.

[0036] Figure 11 This is a block diagram showing an example of a fluid circuit of a blood pressure measurement device according to an embodiment of the present invention.

[0037] Figure 12 It is a perspective view schematically showing the structure of a restriction member of a blood pressure measurement device according to an embodiment of the present invention.

[0038] Figure 13 It is a perspective view schematically showing the structure of a restriction member of a blood pressure measurement device according to an embodiment of the present invention.

[0039] Figure 14 This is a plan view showing the main structure of a blood pressure measurement device according to another embodiment of the present invention, as viewed from the back side of the device body.

[0040] Figure 15 It is a side view showing the structure of a blood pressure measurement device according to another embodiment of the present invention.

[0041] Figure 16 This is a plan view showing the main structure of a blood pressure measurement device according to another embodiment of the present invention, as viewed from the back side of the device body.

[0042] Figure 17 This is a block diagram showing an example of a fluid circuit of a blood pressure measurement device according to another embodiment of the present invention.

[0043] Figure 18 This is a block diagram showing an example of a fluid circuit of a blood pressure measurement device according to another embodiment of the present invention.

[0044] Figure 19 This is a cross-sectional view schematically showing the structure of a restriction member of a blood pressure measurement device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0045] Below, use Figures 1 to 13 An example of the blood pressure measurement device 1 according to the embodiment of the present invention will be described.

[0046] Figure 1 It is a perspective view showing the structure of a blood pressure measurement device 1 according to an embodiment of the present invention. Figure 2 This is a perspective view showing the structure of the blood pressure measurement device 1 with the restriction member 7 exposed. Figure 3 is a side view showing the structure of the blood pressure measurement device 1. Figure 4 This is a side view showing the structure of the blood pressure measurement device 1 in a state where it is worn on the wrist 300 .

[0047] Figure 5 It is a block diagram showing the configuration of the blood pressure measurement device 1 . Figure 6 It is a cross-sectional view showing the structure of the device body 3 , a portion of the first cuff structure 4 , and a portion of the second cuff structure 5 of the blood pressure measurement device 1 . Figure 7 1 is a plan view showing the structure of the device body 3, a portion of the first cuff structure 4, and a portion of the second cuff structure 5 of the blood pressure measurement device 1. Figure 8 This is a plan view showing the configuration of the device body 3 , a portion of the first cuff structure 4 , and a portion of the second cuff structure 5 of the blood pressure measurement device 1 , omitting the cuff cover 33 .

[0048] Figure 9 This is a perspective view showing the structure of the device body 3 from the top side after decomposition. Figure 10 It is a perspective view showing the structure of the device main body 3 from the bottom side in an exploded manner. Figure 11 This is a block diagram showing an example of the fluid circuit 24 of the blood pressure measurement device 1 . Figure 12 and Figure 13 It is a perspective view schematically showing the structure of the restriction member 7 of the blood pressure measurement device 1 .

[0049] like Figures 1 to 4 As shown, the blood pressure measurement device 1 includes, for example, a device body 3, a first cuff structure 4 (first cuff), a second cuff structure 5 (second cuff), a strap 6, and a restriction member 7. The blood pressure measurement device 1 is configured such that the first cuff structure 4 and the second cuff structure 5 extend from the device body 3 in opposing directions relative to the device body 3, and the strap 6 covers the first cuff structure 4 and the second cuff structure 5, allowing the device 1 to be secured to a wrist 300 of a living body. Furthermore, the restriction member 7 restricts relative movement of the first cuff structure 4 and / or the second cuff structure 5 and the strap 6 in the width direction.

[0050] like Figures 1 to 10 As shown, the device body 3 includes, for example, a housing 11, a display unit 12, an operating 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.

[0051] The housing 11 is a casing that houses the components of the device body 3. For example, the housing 11 houses a display unit 12, an operating 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.

[0052] The housing 11 includes, for example, a shell shell 31 , a damper 32 covering an upper opening of the shell shell 31 , and a cuff cover 33 provided below the shell shell 31 .

[0053] The outer shell 31 is formed into a bottomed cylindrical shape, such as a circular, rectangular, or polygonal cylindrical shape. In this embodiment, the outer shell 31 is formed into a bottomed rectangular cylindrical shape. Specifically, the outer shell 31 includes a rectangular cylindrical peripheral wall portion 31a; a bottom portion 31b provided on the peripheral wall portion 31a; and a pair of ring portions 31c provided on a pair of opposite sides of the peripheral surface of the peripheral wall portion 31a.

[0054] The peripheral wall portion 31a includes, for example, an opening 31d for accommodating a portion of the operating portion 13. For example, the opening 31d is formed on a side of the peripheral wall portion 31a that is different from the two sides on which the pair of ring portions 31c are provided. Alternatively, for example, two openings 31d may be formed on one side of the peripheral wall portion 31a.

[0055] The bottom portion 31b forms the back side (bottom portion 31b) of the housing 11 (outer shell 31). The bottom portion 31b protrudes, for example, so that a portion can contact the wrist 300. For example, the bottom portion 31b has a protrusion 31b1 formed by a rectangular protrusion at the center of the outer surface and a rectangular depression at the center of the inner surface of the bottom portion 31b. Furthermore, the bottom portion 31b is formed with: a plurality of windows 31b2 for accommodating the biosensor 20; and a plurality of holes 31b3 for accommodating the connection portions 73 and 83, described later, which serve as components for fluidly connecting the first and second cuff structures 4 and 5 to the pump 14.

[0056] The biosensor 20 is disposed on the inner surface of the protrusion 31b1. The protrusion 31b1 constitutes a sensor unit that includes at least one of the biosensor 20 and the charging terminal 214, which are disposed on the back surface of the housing 11. Here, the biosensor 20 and the charging terminal 214 disposed on the back surface of the housing 11 refer to the situation where a portion of the components constituting the biosensor 20 are exposed on the back surface of the housing 11 or are disposed on the back surface of the housing 11 via a member other than the first cuff assembly 4 and the second cuff assembly 5 (for example, the cover 31b5 described below).

[0057] The window portion 31b2 is formed in the protruding portion 31b1. Figures 6 to 8 As shown, the window portion 31b2 is formed of, for example, a plurality of openings 31b4 formed at a plurality of locations of the protrusion 31b1 and a light-transmitting cover 31b5 made of glass or resin material covering the openings 31b4. The cover 31b5 covers, for example, the outer surface of the protrusion 31b1.

[0058] like Figure 10 As shown, multiple holes 31b3 are formed between the protrusion 31b1 and each ring portion 31c in the bottom portion 31b. In this embodiment, three holes 31b3 are formed between the protrusion 31b1 and one ring portion 31c, and three holes 31b3 are formed between the protrusion 31b1 and the other ring portion 31c. These three holes 31b3 are arranged in a direction, for example, a direction perpendicular to the direction in which the pair of ring portions 31c face each other. Specifically, at one end of the bottom portion 31b, which serves as the back surface of the housing 11, the three holes 31b3 for securing a portion of the first cuff structure 4 are positioned away from the protrusion 31b1. At the other end of the same direction, the three holes 31b3 for securing another portion of the first cuff structure 4 and the second cuff structure 5 are positioned away from the protrusion 31b1 in the other direction.

[0059] Furthermore, the bottom portion 31b is formed with a slit-shaped ventilation opening 31b6 extending in one direction. The bottom portion 31b is equipped with a waterproof and moisture-permeable sheet 31b7 covering the ventilation opening 31b6. The waterproof and moisture-permeable sheet 31b7 is formed to prevent water from entering the housing 11 from the outside through the ventilation opening 31b6 in the bottom portion 31b, while allowing ventilation between the inside and the outside of the housing 11. The ventilation opening 31b6 and the waterproof and moisture-permeable sheet 31b7 are positioned so as not to overlap with the first cuff structure 4 and the second cuff structure 5 fixed to the bottom portion 31b, that is, to be 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 ring portions 31c, the flow path body 72 of the first pressing cuff 52 (described later) of the first cuff structure 4 is positioned adjacent to one side of the protrusion 31b1, and the ventilation opening 31b6 and the waterproof and moisture-permeable sheet 31b7 are positioned adjacent to the other side of the protrusion 31b1.

[0060] The loop portion 31c is formed to allow the strap 6 to pass through, secure the strap 6, or fold it back. For example, the loop portion 31c is a rectangular ring-shaped member with an opening that is long in one direction, through which the strap 6 can be inserted. The loop portion 31c is integrally formed on the outer surface of the outer shell 31. One of the pair of loop portions 31c secures one end of the strap 6, while the other loop portion 31c folds the strap 6 back.

[0061] The windshield 32 has the same shape as the outer periphery of the outer shell 31 and is a rectangular glass plate in this embodiment. It should be noted that the windshield 32 can be made of any transparent or light-transmitting material and is not limited to a glass plate.

[0062] The cuff cover 33 covers the bottom 31b of the outer shell 31. An opening 33a is formed in the cuff cover 33. This opening 33a accommodates the protrusion 31b1 of the bottom 31b and exposes the protrusion 31b1 to the outside. For example, the cuff cover 33 is formed with a thickness and shape such that, when secured to the bottom 31b, the protrusion 31b1 protrudes from the main surface of the cuff cover 33 facing the wrist 300. Furthermore, for example, holes 33b for screws are formed at the four corners of the cuff cover 33, and the cuff cover 33 is removably secured to the bottom 31b of the outer shell 31 of the housing 11 using screws or the like.

[0063] The cuff cover 33 covers the ends of the first and second cuff structures 4 and 5 located at the bottom 31b, positioning the ends of the first and second cuff structures 4 and 5 in the gap created between the cuff cover 33 and the bottom 31b, thereby securing the first and second cuff structures 4 and 5 to the bottom 31b. Specifically, the cuff cover 33 covers a portion of the flow path 72 and the connection 73 of the first pressing cuff 52, the flow path 82 and three connection portions 83 of the sensing cuff 54, and the flow path 92 and two connection portions 93 of the second pressing cuff 62, described later. Furthermore, the cuff cover 33 restricts movement of the covered portions of the first pressing cuff 52, the sensing cuff 54, and the second pressing cuff 62 away from the bottom 31b, thereby securing the first and second cuff structures 4 and 5. Note that the cuff cover 33 may also have a cushioning material between it and the first and second cuff structures 4 and 5.

[0064] 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 electroluminescent display. Specifically, the display unit 12 is an OLED (Organic Light Emitting Diode). The display unit 12 displays various information, including the date and time, blood pressure values ​​such as maximum and minimum blood pressure, measurement results such as heart rate, and the charge status and remaining battery level of the battery 18. For example, when viewed from above, the display unit 12 has the same shape as the windshield 32 or a shape slightly smaller than the windshield 32.

[0065] The operating unit 13 is configured to receive user commands. For example, the operating unit 13 includes a plurality of buttons 41 provided on the housing 11; sensors that detect operation of the buttons 41; and a touch panel 43 provided on the display 12 or the windshield 32. User operation converts the command into an electrical signal. The sensor and touch panel 43 are electrically connected to the processor 23 and output electrical signals corresponding to the operation to the processor 23.

[0066] The pump 14 is, for example, a piezoelectric pump. The pump 14 compresses air, for example, as a fluid, and supplies the compressed air via the fluid circuit 24 to the air bladder 71 of the first compression cuff 52 and the air bladder 81 of the sensing cuff 54 of the first cuff structure 4, as described later, and to the air bladder 91 of the second compression cuff 62 of the second cuff structure 5, as described later. The pump 14 is electrically connected to the processor 23.

[0067] The acceleration sensor 15 is, for example, a triaxial acceleration sensor. The acceleration sensor 15 measures acceleration and outputs an analog signal. The acceleration sensor 15 is connected to the processor 23 via, for example, an A / D conversion circuit.

[0068] Valve 16 is, for example, an on-off valve. Valve 16 opens and closes the fluid circuit connecting pump 14 with first cuff structure 4 and / or second cuff structure 5 in fluid circuit 24, and / or the fluid circuit connecting first cuff structure 4 with the outside (atmosphere). Valve 16 is electrically connected to processor 23. For example, valve 16 is opened and closed under the control of processor 23.

[0069] As a specific example, the valve 16 is a safety valve that releases the air supplied to the first pressing cuff 52, the second pressing cuff 62, and the sensing cuff 54 described later of the first cuff structure 4 into the atmosphere. For example, when air is supplied to the first pressing cuff 52 and the sensing cuff 54 when measuring blood pressure, the valve 16 is switched to a closed state by being controlled by the processor 23. In addition, when the first pressing cuff 52 and the sensing cuff 54 are exhausted, the valve 16 is switched from a closed state to an open state by being controlled by the processor 23. In addition, the valve 16 can also be formed to be able to adjust the opening. It should be noted that the valve 16 can be provided on the fluid circuit 24, and can also be provided integrally inside the housing of the pump 14.

[0070] The pressure sensor 17 is, for example, disposed in the fluid circuit 24. The pressure sensor 17 detects the pressure of the first compression 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, for example, via an A / D conversion circuit, and converts the detected pressure into an electrical signal, which is then output to the processor 23.

[0071] The battery 18 is, for example, a rechargeable and dischargeable secondary battery such as a lithium-ion battery. The battery 18 is electrically connected to the processor 23. The battery 18 supplies power to the processor 23. The battery 18 supplies power to drive the various components of the processor 23 and also supplies power to drive the display unit 12, the operating unit 13, the pump 14, the acceleration sensor 15, the valve 16, the pressure sensor 17, the communication unit 19, and the biosensor 20 via the processor 23.

[0072] The communication unit 19 is configured to transmit and receive information with external devices via wireless and / or wired communication. For example, the communication unit 19 is a wireless communication module that complies with wireless communication standards. For example, the communication unit 19 transmits information obtained under the control of the processor 23, such as measured blood pressure and pulse information, to the external device. Furthermore, the communication unit 19 receives software update programs from the external device and transmits them to the control unit. In this embodiment, the external device is, for example, a smartphone, tablet computer, personal computer, smartwatch, or other external terminal.

[0073] In this embodiment, the communication unit 19 can be connected to an external terminal directly or via a network. The communication unit 19 can also be connected to an external terminal via a mobile communication network such as 4G (fourth generation mobile communication technology) or 5G (fifth generation mobile communication technology), or a wireless communication line such as WiMAX (World Interoperability for Microwave Access), or Wi-Fi (registered trademark). Furthermore, the communication unit 19 can be connected to an external device via wireless communication means such as BLE (Bluetooth (registered trademark) Low Energy), NFC (Near Field Communication), or infrared communication. Furthermore, the communication unit 19 can include, for example, a wireless communication module, a universal connector such as a micro-USB (Universal Serial Bus), or a dedicated connector for the blood pressure measurement device 1. It can also be connected to an external terminal directly via various cables such as a USB cable, or via a wired communication line such as a LAN (Local Area Network) connection. Therefore, the communication unit 19 can also be configured to include multiple communication means such as a wireless antenna and a micro-USB connector. It should be noted that the connector for wired communication may be a dedicated connector for the blood pressure measurement device 1 .

[0074] The biosensor 20 is a sensor configured to detect biological information by contacting or facing the wrist 300. The biosensor 20 converts the detected biological information 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 a sensor that measures chemical quantities such as blood sugar 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.

[0075] For example, the PPG sensor 20a measures the heart rate using photoplethysmography.For example, the PPG sensor 20a includes a first LED 20d, a second LED 20e, and a first PD (photodiode) 20f.

[0076] 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.

[0077] For example, the ECG sensor 20c measures the current in the heart and acquires an electrocardiogram waveform. For example, the ECG sensor 20c includes a pair of electrocardiogram electrodes 20c1.

[0078] 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 using wired power and / or wireless power. For example, the charging circuit unit 211 receives power transmitted from the antenna unit 103 of the external power transmission device 100 to charge the battery 18. Alternatively, for example, the charging circuit unit 21 receives power transmitted from the power transmission terminal 104 of the external power transmission device 100 to charge the battery 18 using the charging terminal 214. Specifically, the charging circuit unit 21 selectively receives power from the power transmission device 100 using the antenna unit 211 and the charging terminal 214 to charge the battery 18. It should be noted that the charging circuit unit 21 can be configured to perform both wired and wireless power supply, or it can be configured to perform only one of the two.

[0079] Antenna unit 211 receives power transmitted from antenna unit 103 of power transmission device 100. Antenna unit 211 is, for example, a power receiving coil serving as a power receiving resonant circuit. Antenna unit 211 supplies the received power to power receiving unit 212. The power receiving surface of antenna unit 211 is formed into a planar shape. Antenna unit 211 is, for example, disposed within housing 11. As a specific example, antenna unit 211 is disposed within housing 11, adjacent to display unit 12 on the side of display unit 12 opposite windshield 32. Antenna unit 211 includes, for example, a resonant capacitor, forming a power receiving resonant circuit.

[0080] Power receiving unit 212 rectifies the power received via antenna unit 211 or charging terminal 214 and supplies it to charging unit 213. Specifically, power receiving unit 212 rectifies the power supplied from antenna unit 211, converting it from AC to DC. For example, power receiving unit 212 includes a rectifier circuit and a control circuit. The control circuit controls the operation of the rectifier circuit and outputs the rectified DC power to charging unit 213.

[0081] Charging unit 213 supplies the electric power supplied from power receiving unit 212 to battery 18 as charging power. For example, charging unit 213 converts the electric power supplied from power receiving unit 212 into a predetermined current value and voltage value and supplies the converted electric power to battery 18. Furthermore, charging unit 213 may include a circuit for outputting the charge status of battery 18 to power receiving unit 212 and / or processor 23, for example.

[0082] The charging terminal 214 includes, for example, a pair of terminals 214 a , and receives the transmission power from the power transmission terminal 104 of the power transmission device 100 via the pair of terminals 214 a .

[0083] The memory 22 includes, for example, RAM (Random Access Memory) and ROM (Read Only Memory). The memory 22 stores various data. For example, the memory 22 pre-stores various program data, such as programs and application programs for controlling the entire blood pressure measurement device 1 and the pump 14, in a changeable manner; setting data for setting various functions of the blood pressure measurement device 1; calculation data for calculating blood pressure values ​​based on the pressure measured by the pressure sensor 17; and calculation data for calculating biological information such as heart rate, saturation, and electrocardiogram waveforms based on information measured by the biosensor 20.

[0084] The processor 23 controls the overall operation of the blood pressure measurement device 1 and the operation of the pump 14 and valve 16 based on the program stored in the memory 22, thereby performing predetermined operations (functions). In addition, the processor 23 performs predetermined calculations, analysis, processing, etc. according to the read program. The processor 23 is a computing device such as a CPU (Central Processing Unit). In addition to including a main CPU, the processor 23 may also include a sub-CPU. In addition, the processor 23 displays the status and results of various operations performed and calculations, analysis, processing, etc. on the display unit 12 through a program or application.

[0085] The fluid circuit 24 fluidically connects at least two of the pump 14, valve 16, pressure sensor 17, first cuff structure 4, and second cuff structure 5, located within the housing 11. The fluid circuit 24 may include, for example, a tube or flow path plate 24a that forms a flow path for the fluid supplied from the pump 14 to the first cuff structure 4; components such as a single or multiple throttles 24b that control the flow rate 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 direction of fluid flow. The flow path plate 24a is formed by joining multiple plates made of a resin or metal material to sheets or double-sided tape with slits formed between adjacent plates, forming the flow path. It should be noted that the multiple throttles 24b can be located within the flow path plate 24a or can also be located on portions of the first cuff structure 4 or the second cuff structure 5.

[0086] The substrate 25 includes, for example, a control substrate 25 a , a sensor main substrate 25 b , and a sensor sub-substrate 25 c .

[0087] The control substrate 25 a includes, 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 .

[0088] A first LED 20 d , a second LED 20 e , a first PD 20 f , and a second PD 20 g for the PPG sensor 20 a and the SpO 2 sensor 20 b are mounted in the sensor main substrate 25 b .

[0089] Various circuits and electronic components constituting the PPG sensor 20a, the SpO2 sensor 20b, and the ECG sensor 20c are mounted on the sensor sub-substrate 25c. For example, the control substrate 25a, the sensor main substrate 25b, and the sensor sub-substrate 25c are electrically connected.

[0090] Below, use Figures 1 to 4 、 Figures 6 to 8 A specific example of the first cuff structure 4 will be described. Figures 1 to 4 、 Figures 6 to 8 As shown, the first cuff structure 4 includes a first collar 51, a first pressing cuff 52, a back plate 53, and a sensing cuff 54. For example, the first cuff structure 4 includes the first collar 51, the first pressing cuff 52, the back plate 53, and the sensing cuff 54. The first cuff structure 4 is constructed by stacking the first collar 51, the first pressing cuff 52, the back plate 53, and the sensing cuff 54 in this order toward the wrist 300. It should be noted that the first cuff structure 4 may also be constructed without the first collar 51 and / or the back plate 53.

[0091] For example, one end of the first collar 51 is fixed to the bottom 31b of the housing 11 on the wrist 300 side. The first collar 51 is formed into a band-like shape that curves to follow the circumferential shape of the wrist 300. The first collar 51 is made of a resin material. The first collar 51 is made of a low-hardness material that exhibits flexibility and shape retention. Flexibility here means that the first collar 51 deforms radially when external force is applied from the strap 6. Shape retention means that the first collar 51 maintains its pre-set shape when no external force is applied. Specifically, the first collar 51 is made of a resin material with a hardness that allows it to undergo little or no compression deformation but is capable of elastic deformation, such as bending. This bending deformation changes its shape, particularly the curvature of the bent portion. Therefore, the first collar 51 is elastically deformable in such a way that, when bent by external force, it expands or contracts the internal space for the wrist 300 to follow the shape of the wrist on which it is worn. For example, the first collar 51 is formed of thermoplastic polyurethane resin (hereinafter referred to as TPU) or polypropylene resin.

[0092] One end of the first collar 51 is fixed to the housing 11. The first collar 51 is formed to a length such that, when the blood pressure measurement device 1 is worn on the wrist 300 with the longest circumference of the intended user, it faces at least one of the two arteries 311 and 312. Preferably, the first collar 51 is formed to a length such that, when the blood pressure measurement device 1 is worn on the wrist 300 with the longest circumference of the intended user, it faces both arteries 311 and 312. Furthermore, the first collar 51 is set to a length such that, when the blood pressure measurement device 1 is worn on the wrist 300 with the shortest circumference of the intended user, the other end does not contact the device body 3. For example, the portion of the first collar 51 extending from the housing 11 of the device body 3 is curved with a predetermined radius of curvature to follow the shape of the side of one of the left and right wrists 300 and the palm of the wrist 300.

[0093] The first compression cuff 52 is secured to the inner circumferential surface of the first collar 51 using double-sided tape, adhesive, heat fusion, or the like. The first compression cuff 52 is fluidically connected to the pump 14 via the fluid circuit 24. One main surface of the first compression cuff 52 is secured to the inner surface of the first collar 51. The first compression cuff 52 inflates to press the back of the wrist 300 and pushes the back plate 53 and the sensing cuff 54 toward the wrist 300.

[0094] The first compression cuff 52 includes, for example, a single or multiple air bags 71, a fluid path 72 disposed at the end of the air bag 71, and a connection portion 73, such as a pipe joint, disposed on the fluid path 72 and connected to the fluid circuit 24. The air bag 71 is a bag-shaped structure. In this embodiment, the blood pressure measurement device 1 utilizes air via the pump 14, so an air bag will be used for the description. However, if a fluid other than air is used, the bag-shaped structure may be any fluid bag that expands with the fluid. The air bag 71 is formed into a rectangular bag shape that is elongated in one direction.

[0095] The air bag 71 is formed into a bag shape by heat-welding multiple sheet members, for example. For example, if the first compression cuff 52 has multiple air bags 71, the multiple air bags 71 are stacked and integrated by welding, for example, to form a fluid-connected structure. The sheet member forming the air bag 71 is formed, for example, from a thermoplastic elastomer. Here, the thermoplastic elastomer is, for example, TPU.

[0096] The flow path body 72 is, for example, integrally provided on a portion of the edge of one side in the long dimension direction of the air bag 71. The flow path body 72 is formed by a portion of two sheet members among the plurality of sheet members forming the air bag 71. In addition, the flow path body 72 is formed into a shape that is longer in one direction with a width smaller than the width of the short dimension direction of the air bag 71. The flow path body 72 is integrally provided with a connection portion 73 at the front end. The flow path body 72 is connected to the fluid circuit 24 via the connection portion 73, forming 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.

[0097] For example, one connection portion 73 is provided. One connection portion 73 is connected to the fluid circuit 24 via one hole portion 31 b 3 formed in the bottom portion 31 b .

[0098] It should be noted that, for example, the flow path body 72 extends from one end side of the bottom 31b to the other end side in the opposing direction of the pair of ring portions 31c in order to avoid the protrusion 31b1 formed on the bottom 31b, adjacent to the protrusion 31b1, and the connecting portion 73 is connected to one of the three hole portions 31b3 formed at the end portion of the bottom 31b on the protruding side of the second cuff structure 5.

[0099] The back plate 53 is secured to the wrist 300-side surface of the first compression cuff 52 using double-sided tape, adhesive, or the like. The back plate 53 is formed of a resin material. For example, the back plate 53 is formed in the shape of a rectangular plate that is elongated in one direction. It should be noted that the back plate 53 may also be a segmented structure, i.e., formed by arranging multiple rectangular pieces in one direction. The back plate 53 exhibits shape-adaptive properties.

[0100] Here, shape conformability refers to the function of the back plate 53 being able to deform in a manner that imitates the shape of the contacted part of the wrist 300 to be configured. The contacted part of the wrist 300 refers to the area of ​​the wrist 300 that contacts the back plate 53. The contact here includes both direct contact with the back plate 53 and indirect contact with the back plate 53 through the sensing cuff 54.

[0101] The sensing cuff 54 is fixed to the main surface of the back plate 53 on the wrist side. The sensing cuff 54 is in direct contact with the area of ​​the wrist 300 where the arteries 311 and 312 are located, or is in indirect contact with the area via a cover or the like. The sensing cuff 54 is formed into a rectangular shape that is long in one direction. It should be noted that the sensing cuff 54 may also be configured to be in contact with the area where the arteries 311 and 312 are located on one side of the wrist 300. The sensing cuff 54 is the same as or smaller than the first pressing cuff 52 in the longitudinal direction. In addition, the sensing cuff 54 is the same as or smaller than the first pressing cuff 52 in the transverse direction. The sensing cuff 54 is the same shape as the back plate 53 in the longitudinal direction and the width direction of the back plate 53, or is smaller or larger than the back plate 53. The sensing cuff 54 compresses the area of ​​the palm side of the wrist where the arteries are located by inflating. The sensing cuff 54 is pressed toward the living body via the back plate 53 by the inflated first pressing cuff 52 .

[0102] As a specific example, the sensing cuff 54 includes an air bag 81, a fluid path 82 fluidically connected to the air bag 81, and a connection portion 83, such as a pipe joint, provided on the fluid path 82. The air bag 81 and the fluid path 82 are formed into a bag shape by, for example, heat-welding a plurality of sheet members. The sheet members forming the air bag 81 and the fluid path 82 are formed, for example, from a thermoplastic elastomer. Here, the thermoplastic elastomer is, for example, TPU.

[0103] Here, the air bag 81 is a bag-like structure. In this embodiment, the blood pressure measurement device 1 uses air via the pump 14, so the description will use an air bag. However, when using a fluid other than air, the bag-like structure can be any fluid bag that expands with the fluid. The air bag 81 is configured in a rectangular shape that is long in one direction.

[0104] The flow path body 82 is provided integrally with a portion of the edge of one side in the long dimension direction of the air bag 81, for example. The flow path body 82 is formed by a portion of two sheet members among the plurality of sheet members forming the air bag 81. In addition, the flow path body 82 is formed in a shape that is long in one direction with a width smaller than the width in the short dimension direction of the air bag 81. The flow path body 82 is provided integrally with a connection portion 83 at the front end. The flow path body 82 is connected to the fluid circuit 24 via the connection portion 83, forming 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.

[0105] For example, three connection portions 83 are provided. The three connection portions 83 are connected to three holes 31 b 3 formed at the end of the bottom portion 31 b on the protruding side of the first cuff structure 4 . The three connection portions 83 are connected to the fluid circuit 24 .

[0106] Below, use Figures 1 to 4 、 Figures 6 to 8 A specific example of the second cuff structure 5 will be described. Figures 1 to 4 、 Figures 6 to 8 As shown, the second cuff structure 5 includes a second collar 61 and a second pressing cuff 62. The second cuff structure 5 is constructed by sequentially stacking the second collar 61 and the second pressing cuff 62 toward the wrist 300.

[0107] The second collar 61 is fixed, for example, at one end to the bottom portion 31b of the housing 11 on the wrist 300 side. The second collar 61 is formed into a band-like shape that curves to follow the circumferential shape of the wrist 300. The second collar 61 is made of a resin material. The second collar 61 is made of a low-hardness material that exhibits flexibility and shape retention. Flexibility here means that the second collar 61 deforms radially when external force is applied from the strap 6. Shape retention means that the second collar 61 maintains its pre-set shape when no external force is applied. Specifically, the second collar 61 is made of a resin material with a hardness that allows for little or no compression deformation, but allows for elastic deformation, such as bending, that changes its shape, particularly the curvature of the bent portion. Therefore, the second collar 61 is elastically deformable in such a way that, when subjected to external force, it bends and expands or contracts the internal space for the wrist 300 to conform to the shape of the wrist on which it is worn. For example, the second collar 61 is formed of thermoplastic polyurethane resin (hereinafter referred to as TPU) or polypropylene resin.

[0108] One end of the second collar 61 is fixed to the housing 11. Furthermore, the second collar 61 is formed to a length such that, when the blood pressure measurement device 1 is worn on the wrist 300 with the longest circumference of the intended wearer, it faces at least one of the two arteries 311 and 312, and its end overlaps with the first cuff structure 4. Here, one of the two arteries 311 and 312 is the radial artery 311, and the other is the ulnar artery 312. Preferably, the second collar 61 is formed to a length such that, when the blood pressure measurement device 1 is worn on the wrist 300 with the longest circumference of the intended wearer, it faces both arteries 311 and 312. Furthermore, the second collar 61 is set to a length such that, when the blood pressure measurement device 1 is worn on the wrist 300 with the shortest circumference of the intended wearer, the other end of the second collar 61 does not contact the device body 3. The portion of the second collar 61 extending from the housing 11 of the device body 3 , for example, is curved with a predetermined curvature radius to follow the shape of the side of one of the left and right wrists 300 and the palm side of the wrist 300 .

[0109] The second compression cuff 62 is secured to the inner circumferential surface of the second collar 61 using double-sided tape, adhesive, thermal welding, or the like. The second compression cuff 62 is fluidically connected to the pump 14 via the fluid circuit 24. One main surface of the second compression cuff 62 is secured to the inner surface of the second collar 61. The second compression cuff 62 inflates to compress the opposing wrist 300 and presses the overlapping first cuff structure 4 toward the wrist 300. The inflated thickness of the second compression cuff 62 is the same as or greater than the inflated thickness of the first compression cuff 52.

[0110] The second compression cuff 62 includes, for example, a single or multiple air bags 91, a fluid path 92 disposed at the end of the air bag 91, and a connection portion 93, such as a pipe joint, disposed on the fluid path 92 and connected to the fluid circuit 24. The air bag 91 is a bag-shaped structure. In this embodiment, the blood pressure measurement device 1 utilizes air via the pump 14, so an air bag will be used for the description. However, if a fluid other than air is used, the bag-shaped structure may be any fluid bag that expands with the fluid. The air bag 91 is formed into a rectangular bag shape that is elongated in one direction.

[0111] The air bag 91 is formed into a bag shape by heat-welding multiple sheet members, for example. For example, if the second compression cuff 62 has multiple air bags 91, the multiple air bags 91 are stacked and integrated by welding, for example, to form a fluid-connected structure. The sheet member forming the air bag 91 is formed, for example, from a thermoplastic elastomer. Here, the thermoplastic elastomer is, for example, TPU.

[0112] The flow path body 92 is, for example, integrally provided on a portion of the edge of one side in the long dimension direction of the air bag 91. The flow path body 92 is formed by a portion of two sheet members among the plurality of sheet members forming the air bag 91. In addition, the flow path body 92 is formed into a shape that is longer in one direction with a width smaller than the width of the short dimension direction of the air bag 91. The flow path body 92 is integrally provided with a connection portion 93 at the front end. The flow path body 92 is connected to the fluid circuit 24 via the connection portion 93, forming a flow path between the fluid circuit 24 and the air bag 91. The thickness of the flow path body 92 when inflated is smaller than the thickness of the air bag 91 when inflated.

[0113] For example, two connection portions 93 are provided. The two connection portions 93 are connected to the fluid circuit 24 via two holes 31b3 formed in the bottom portion 31b.

[0114] Note that, for example, the connection portion 93 is connected to two of the three holes 31 b 3 formed in the end portion of the bottom portion 31 b on the protruding side of the second cuff structure 5 .

[0115] The first and second pressing cuffs 52 and 62 of the first and second cuff structures 4 and 5 thus constructed are formed to such lengths that, when the blood pressure measurement device 1 is worn on the wrist 300 having the maximum circumference, the inflated portion of the air bag 71 of the first pressing cuff 52 covers at least one of the two arteries 311 and 312, and the air bag 91 of the second pressing cuff 62 overlaps with the air bag 71. Furthermore, the air bag 91 of the second pressing cuff 62 is formed to such lengths that, when the blood pressure measurement device 1 is worn on the wrist 300 having the maximum circumference and the air bag 91 overlaps with the air bag 71 of the first pressing cuff 52, the end edge of the air bag 91 on the side opposite to the flow path body 92 does not overlap with the air bag 71 of the first pressing cuff 52 on the artery covered by the air bag 71 of the first pressing cuff 52. That is, the air bag 91 of the second pressing cuff 62 is set to the following length: when the blood pressure measurement device 1 is worn on the wrist 300 with the maximum circumference and the air bag 91 overlaps with the air bag 71 of the first pressing cuff 52, the inflated portion of the air bag 91 of the second pressing cuff 62 overlaps with the air bag 71 of the first pressing cuff 52 on the artery covered by the air bag 71 of the first pressing cuff 52.

[0116] The strap 6 is formed in a band-like shape on the outer circumference of the first and second cuff structures 4 and 5, on the side opposite to the wrist 300. The strap 6 is not fixed to the first and second cuff structures 4 and 5. One end of the strap 6 is fixed to one loop portion 31c. Furthermore, the strap 6 includes a pair of hook-and-loop fasteners 6a, one with a hook and the other with a loop. These fasteners engage with each other to secure the strap 6, with the end inserted into the other loop portion 31c. The strap 6 also has a handle 6b on the other end to facilitate gripping by the user.

[0117] For example, the strap 6 is fixed to the loop portion 31c formed on the side extending from the second cuff structure 5, and is inserted into the loop portion 31c formed on the side extending from the first cuff structure 4, and then folded back. The strap 6 has a length that allows it to be inserted into the loop portion 31c provided on the contour housing 31 when the blood pressure measurement device 1 is worn on the wrist 300 with the maximum circumference assumed to be worn. In addition, the hook and loop fastener 6a is provided on the strap 6 with a length and configuration that allows the strap 6 to be folded back and fastened on the wrist 300 with the maximum circumference and the minimum circumference assumed to be worn. By stretching the end of the strap 6 after the loop portion 31c is folded back in a direction away from the loop portion 31c, as shown in FIG. Figure 3As shown, the blood pressure measurement device 1 is attached to the wrist 300 with the first cuff structure 4 and the second cuff structure 5 wrapped around the wrist 300. By securing the strap 6 with the hook-and-loop fastener 6a, the first and second pressing cuffs 52, 62 are restricted from expanding outwardly, away from the wrist, during expansion. This allows the first and second pressing cuffs 52, 62 to compress the wrist. This enables blood pressure measurement using the known oscillometric method.

[0118] The limiting member 7 limits relative movement in the width direction between the first cuff structure 4 and / or the second cuff structure 5 and the strap 6. Here, the width direction refers to a direction perpendicular to the direction in which the strap 6 is wrapped around the wrist 300. In other words, it refers to a direction perpendicular to the longitudinal direction of the first cuff structure 4, the second cuff structure 5, and the strap 6.

[0119] In this embodiment, the blood pressure measurement device 1 is configured to include a first cuff structure 4 and a second cuff structure 5, and the strap 6 is not fixed to the first cuff structure 4 and the second cuff structure 5. Therefore, an example of a restriction member 7 that restricts relative movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction will be described.

[0120] like Figure 2 、 Figure 12 as well as Figure 13 As shown, the restriction member 7 includes a sheet 7a, a first hook and loop fastener 7b, a second hook and loop fastener 7c, a first restriction portion 7d, and a second restriction portion 7e.

[0121] The sheet 7a is formed into a plate-like shape that is longer 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 strap 6. The sheet 7a is formed, for example, from a resin material. One end of the sheet 7a is fixed to the outer surface of the end portion of the first cuff structure 4 on the side of the device body 3. For example, the sheet 7a is fixed to the outer surface of the portion where the first collar 51 of the first cuff structure 4 is adjacent to the device body 3. The sheet 7a and the first cuff structure 4 are fixed, for example, by welding, bonding using double-sided tape or an adhesive, or joining using a hook and loop fastener. The sheet 7a is formed so as to be detachable from the first cuff structure 4 with one end fixed to the first cuff structure 4 as a base point.

[0122] The first hook and loop fastener 7 b is provided on the outer surface of the end portion (front end) of the first cuff structure 4 on the opposite side to the device main body 3 .

[0123] The second hook and loop fastener 7c is provided, for example, on the inner surface of the wrist 300 side at the end (front end) of the sheet 7a opposite the device body 3. The first hook and loop fastener 7b and the second hook and loop fastener 7c are formed so as to be engageable. The first hook and loop fastener 7b and the second hook and loop fastener 7c function as fixing members that secure the sheet 7a to the first cuff structure 4. It should be noted that the fixing member is not limited to hook and loop fasteners; other examples include magnetic sheets, buckles, and the like.

[0124] The first restricting portion 7d restricts relative movement of the first cuff structure 4 and strap 6 in the width direction, while allowing unrestricted relative movement of the first cuff structure 4 and strap 6 in the longitudinal direction. Furthermore, for example, the first restricting portion 7d restricts relative movement of the first cuff structure 4 and strap 6 in the separation direction in a direction perpendicular to the width and longitudinal directions of the first cuff structure 4 and strap 6, that is, in a direction along the opposing direction of the first cuff structure 4 and strap 6. The first restricting portion 7d restricts relative movement of the first cuff structure 4 and strap 6 in the width and separation directions by engaging with the tab 7a fixed to the first cuff structure 4.

[0125] For example, the first restricting portion 7d is formed in an annular shape and is formed so that the sheet 7a can be inserted. The first restricting portion 7d is provided on the inner surface of the band 6. For example, the first restricting portion 7d can be formed by forming a sheet-like member into an annular shape and fixing it to the inner surface of the band 6.

[0126] The second restricting portion 7e restricts relative movement of the first and second cuff structures 4 and 5 in the width direction, while allowing unrestricted relative movement of the first and second cuff structures 4 and 5 in the longitudinal direction. Furthermore, for example, the second restricting portion 7e restricts relative movement of the first and second cuff structures 4 and 5 in the separation direction in a direction perpendicular to the width and longitudinal directions of the first and second cuff structures 4 and 5, that is, in a direction along the opposing direction of the first and second cuff structures 4 and 5. The second restricting portion 7e restricts relative movement of the first and second cuff structures 4 and 5 in the width and separation directions by engaging with the tab 7a fixed to the first cuff structure 4. Thus, the second restricting portion 7e, together with the sheet 7a and the first restricting portion 7d, restricts movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction, and movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the opposing direction away from each other.

[0127] For example, the second restricting portion 7e is formed in an annular shape and is formed so that the sheet 7a can be inserted. The second restricting portion 7e is provided on the inner surface of the band 6. For example, the second restricting portion 7e can be formed by forming a sheet member into an annular shape and fixing it to the inner surface of the band 6.

[0128] The lengths of the first and second restricting portions 7d and 7e in the longitudinal direction of the strap 6 and second cuff structure 5 can be appropriately set based on the ease of relative movement of the first and second cuff structures 4, 5, and strap 6 in the width direction, as well as the postural stability of the first and second cuff structures 4, 5, and strap 6. Specifically, increasing the lengths of the first and second restricting portions 7d and 7e in the longitudinal direction of the strap 6 and second cuff structure 5 ensures sufficient contact length with the sheet 7a in the width direction, thereby stably holding the sheet 7a in the width direction. Furthermore, decreasing the lengths of the first and second restricting portions 7d and 7e in the longitudinal direction of the strap 6 and second cuff structure 5 facilitates insertion of the sheet 7a and reduces friction during sliding movement with the sheet 7a, thereby facilitating stable relative movement of the first and second cuff structures 4, 5, and strap 6 in the longitudinal direction.

[0129] Furthermore, the width of the openings of the first and second restricting portions 7d, 7e, through which the sheet 7a is inserted, is greater than the width of the sheet 7a. Furthermore, the width of the openings of the first and second restricting portions 7d, 7e, through which the sheet 7a is inserted, can be appropriately set based on the ease of inserting the sheet 7a, the ease of relative movement of the first and second cuff structures 4, 5, and strap 6 in the width direction, and the postural stability of the first and second cuff structures 4, 5, and strap 6.

[0130] That is, as the gap between the sheet 7a and the restricting portions 7d and 7e in the width direction increases, the sheet 7a can be inserted and moved more easily, and the relative movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction becomes easier, but the range of relative movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction increases. As the gap between the sheet 7a and the restricting portions 7d and 7e in the width direction decreases, the sheet 7a can be inserted and moved less easily, and the relative movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction becomes more difficult. However, the range of relative movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction decreases, thereby suppressing relative movement in the width direction.

[0131] Thus, the length and width of the first and second limiting portions 7d, 7e can be set according to the required functions, etc. For example, the first and second limiting portions 7d, 7e can have the same shape. Alternatively, the first and second limiting portions 7d, 7e can have different shapes, such as one having a greater length and / or width than the other.

[0132] The length of the sheet 7a, the positions of the pair of hook-and-loop fasteners 7b and 7c, the position of the first limiting portion 7d, and the position of the second limiting portion 7e are set to the following lengths and / or positions: when the blood pressure measurement device 1 is worn on the wrist 300 with the minimum and maximum circumferences assumed for wearing, and when the strap 6 is wrapped around the wrist 300 with the minimum and maximum circumferences assumed for wearing, the sheet 7a can be inserted into the first limiting portion 7d and the second limiting portion 7e, and the sheet 7a and the first cuff structure 4 can be fixed by the hook-and-loop fasteners 7b and 7c. Furthermore, the length of the sheet 7a, the positions of the pair of hook-and-loop fasteners 7b and 7c, the position of the first restricting portion 7d, and the position of the second restricting portion 7e are set so that, when the blood pressure measurement device 1 is worn on a wrist 300 with the minimum and maximum circumferences assumed for wearing, the first cuff structure 4 and the sheet 7a joined by the pair of hook-and-loop fasteners 7b and 7c do not interfere with the second restricting portion 7e in the longitudinal direction of the first cuff structure 4. Furthermore, the first restricting portion 7d is positioned so that, when the blood pressure measurement device 1 is worn on a wrist 300 with the minimum and maximum circumferences assumed for wearing, it does not contact the end of the second cuff structure 5.

[0133] That is, when the blood pressure measurement device 1 is worn on the wrist 300 having the minimum and maximum circumferences assumed for wearing, the restricting member 7 can move the first cuff structure 4 and the second cuff structure 5 to positions suitable for wearing on the wrist 300. Furthermore, the restricting member 7 does not interfere with the second restricting portion 7e provided on the strap 6 and the second cuff structure 5, and does not restrict relative movement of the second cuff structure 5 and the strap 6 in the direction of wrapping around the wrist 300.

[0134] like Figure 12 and Figure 13As shown, the restricting member 7 is configured such that, after the hook-and-loop fasteners 7b and 7c provided on the first cuff structure 4 and the sheet 7a are disconnected and the first cuff structure 4 is separated from the sheet 7a, the sheet 7a is inserted into the first restricting portion 7d and the second restricting portion 7e. The hook-and-loop fastener 7c of the sheet 7a, which is inserted into the first restricting portion 7d and the second restricting portion 7e, is then joined to the hook-and-loop fastener 7b of the first cuff structure 4. Thus, the restricting member 7 restricts relative movement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction while allowing relative movement in the longitudinal direction.

[0135] Next, use Figure 11 An example of the fluid structure of the device body 3 , the first cuff structure 4 , the second cuff structure 5 , and the fluid circuit 24 of the blood pressure measurement device 1 configured as described above will be described.

[0136] The first pressing cuff 52 is connected to the pump 14, for example, via the flow plate 24a. In addition, the first pressing cuff 52 and the pump 14 are connected to the valve 16, for example, via the flow plate 24a. In addition, the first pressing cuff 52 is connected to the second pressing cuff 62, for example, via the flow plate 24a. In addition, the first pressing cuff 52 is connected to the sensing cuff 54, for example, via the flow plate 24a and the throttle 24b provided on the flow plate 24a. The sensing cuff 54 is connected to the pressure sensor 17, for example, via the flow plate 24a. In addition, the sensing cuff 54 is connected to the atmosphere, for example, via the flow plate 24a and the throttle 24b provided on the flow plate 24a. Here, the throttle 24b between the first pressing cuff 52 and the sensing cuff 54 and the throttle 24b between the sensing cuff 54 and the atmosphere are set as flow chokes that cause the first pressing cuff 52 and the sensing cuff 54 to become a desired pressure difference.

[0137] Next, an example of the power transmission device 100 that transmits power to the charging circuit unit 21 of the device main body 3 will be described.

[0138] like Figure 5 As shown, power transmission device 100 includes a power supply 101, a power transmission unit 102, an antenna unit 103, and a power transmission terminal 104. Note that power transmission device 100 may also include only one of antenna unit 103 and power transmission terminal 104. Power supply 101 is, for example, an AC adapter connected to a commercial power source. Power supply 101 converts AC power input from the commercial power source into DC power and supplies the DC power to power transmission unit 102.

[0139] Transmitter 102 generates AC power as transmission power from DC power supplied from power source 101 and supplies it to antenna 103. Transmitter 102 generates AC power having the same or substantially the same frequency as the resonant frequency of the power transmission resonant circuit of antenna 103, for example.

[0140] Antenna unit 103 is, for example, a power transmission coil serving as a power transmission resonant circuit. The power transmission surface of antenna unit 103 is formed in a planar shape. Antenna unit 103 transmits power to antenna unit 211 of device body 3. Antenna unit 103 includes, for example, a resonant capacitor, forming a power transmission resonant circuit.

[0141] The power transmission terminal 104 is formed so as to be contactable with a charging terminal 214 provided in the device body 3 and is fixed to the charging terminal 214 .

[0142] The blood pressure measurement device 1 thus configured can restrict the widthwise movement of the first cuff structure 4 and the strap 6 by means of the restriction member 7, and can also restrict the widthwise movement of the first cuff structure 4 and the second cuff structure 5. Consequently, when the blood pressure measurement device 1 is worn on the wrist 300 and when the first cuff structure 4 and the second cuff structure 5 are inflated, the first cuff structure 4, the second cuff structure 5, and the strap 6 are prevented from shifting in the widthwise direction. Consequently, the strap 6 can stably press the first cuff structure 4 and the second cuff structure 5 against the wrist 300, allowing the first cuff structure 4 and the second cuff structure 5 to appropriately compress the wrist 300. Consequently, the blood pressure measurement accuracy of the blood pressure measurement device 1 is improved.

[0143] Furthermore, because the restriction member 7 does not restrict longitudinal movement of the first and second cuff structures 4 and 5 and the strap 6, wrapping the strap 6 around the wrist 300 also causes the first and second cuff structures 4 and 5 to move longitudinally, enabling proper wrapping of the first and second cuff structures 4 and 5 around the wrist 300. Furthermore, the restriction member 7 is configured so that when the blood pressure measurement device 1 is worn on a wrist 300 with the minimum and maximum circumferences assumed for wear, the first restriction portion 7d provided on the strap 6 does not interfere with the second cuff structure 5. Consequently, relative longitudinal movement of the first and second cuff structures 4 and 5 and the strap 6 is not hindered. Consequently, the blood pressure measurement device 1 can easily adjust the relative positions of the first and second cuff structures 4 and 5 and the strap 6.

[0144] Furthermore, the blood pressure measurement device 1 is provided with a first cuff structure 4 and a second cuff structure 5 extending from the device body 3 and fluidically connected to each other, respectively, on both sides of the device body 3 in one direction. Furthermore, the device body 3 has a protruding portion (sensor portion) 31b1 on the bottom 31b of the housing 11, which is the back side, at a position separated from the first cuff structure 4 and the second cuff structure 5, for example, at the center of the bottom 31b, which serves as a space for accommodating at least one of the biosensor 20 and the charging terminal 214. This allows the first cuff structure 4 and the second cuff structure 5, as well as at least one of the biosensor 20 and the charging terminal 214, to be arranged on the back side of the device body 3.

[0145] Furthermore, the first cuff structure 4 and the second cuff structure 5 are fluidically connected via the fluid circuit 24 including the flow path plate 24a. It should be noted that the first pressing cuff 52 and the second pressing cuff 62 may also be directly fluidically connected to the first cuff structure 4 and the second cuff structure 5. With these structures, even if the first cuff structure 4 and the second cuff structure 5 are provided and fixed to the housing 11 in one direction, the first cuff structure 4 and the second cuff structure 5 can be fluidically connected.

[0146] In addition, when the blood pressure measurement device 1 is worn on the wrist 300 with the maximum circumference assumed for wearing, the air bag 71 of the first compression cuff 52 covers the area where at least one of the two arteries 311 and 312 exists, and the air bag 91 of the second compression cuff 62 can overlap with at least a portion of the air bag 71 of the first compression cuff 52.

[0147] Thus, the wrist 300 can be compressed by the first compression cuff 52 and the second compression cuff 62 , so even if the air bag 71 of the first compression cuff 52 and the air bag 91 of the second compression cuff 62 are not arranged on the back of the device body 3 , sufficient compression force can be ensured to compress the artery.

[0148] Thus, in the blood pressure measurement device 1, when worn on the wrist 300 with the maximum circumference assumed for wearing, the air bag 71 of the first pressing cuff 52 and the air bag 91 of the second pressing cuff 62 overlap by a predetermined length. Furthermore, when the blood pressure measurement device 1 is worn on the wrist 300 with the minimum circumference, the first cuff structure 4 and the second cuff structure 5 are of a length that does not contact the device body 3. Furthermore, the first cuff structure 4 and the second cuff structure 5 are not directly connected to the strap 6.

[0149] With these structures, in the blood pressure measurement device 1, the air bag 71 of the first pressing cuff 52 and the air bag 91 of the second pressing cuff 62 overlap and expand, thereby enabling the first pressing cuff 52 and the second pressing cuff 62 to appropriately compress the artery. Consequently, the blood pressure measurement device 1 can dispose the biosensor 20 on the back side of the device body 3 and can perform highly accurate blood pressure measurement even without disposing the air bag 71 of the first pressing cuff 52 and the air bag 91 of the second pressing cuff 62 on the back side of the device body 3.

[0150] The housing 11 also has a vent 31b6 on the bottom 31b, covered by a waterproof and moisture-permeable sheet 31b7, enabling ventilation within the housing 11. Furthermore, by arranging the vent 31b6 at a location separate from the first and second cuff structures 4 and 5, outside of the protruding portion 31b1 of the bottom 31b, the vent 31b6 can be prevented from being blocked by the first and second cuff structures 4 and 5. Furthermore, by arranging the vent 31b6 at a location covered by the cuff cover 33, which is spaced apart from the bottom 31b, the vent 31b6 is protected by the cuff cover 33. Consequently, the blood pressure measurement device 1 can prevent contaminants from adhering to the vent 31b6 and the waterproof and moisture-permeable sheet 31b7, thereby preventing impairment of the ventilation function.

[0151] Furthermore, the ends of the first cuff structure 4 and the second cuff structure 5 disposed at the bottom 31b of the housing 11 are covered by the cuff cover 33. Therefore, movement of the first cuff structure 4 and the second cuff structure 5 away from the bottom 31b is restricted by the cuff cover 33. Therefore, the first cuff structure 4 and the second cuff structure 5 are prevented from being easily separated from the device body 3.

[0152] Furthermore, the blood pressure measurement device 1 is configured such that the various sensors 20a to 20c serving as the biosensor 20 and the charging terminal 214 are located on the bottom 31b of the device body 3. This eliminates the need for the device body 3 to locate the biosensor 20 and the charging terminal 214 remote from the device body using the substrate 25 disposed within the housing 11, simplifying wiring and providing greater flexibility in configuration. Furthermore, since the biosensor 20 is disposed within the highly rigid housing 11, it maintains stable contact with the wrist 300 when the blood pressure measurement device 1 is worn, enabling appropriate acquisition of biometric information through the biosensor 20. Furthermore, by locating the charging terminal 214 on the bottom 31b, the charging terminal 214 is exposed to the outside when the blood pressure measurement device 1 is removed from the wrist 300, making charging using the charging terminal 214 easier.

[0153] Furthermore, in the blood pressure measurement device 1 , the first pressing cuff 52 and the second pressing cuff 62 are fluidically connected via the fluid circuit 24 provided in the device body 3 , thereby simplifying the placement of the first pressing cuff 52 and the second pressing cuff 62 on the bottom 31 b .

[0154] The blood pressure measurement device 1 constructed in this manner allows the first cuff structure 4, the second cuff structure 5, and the strap 6 to move in the longitudinal direction while restricting their movement in the width direction through the limiting member 7. This allows for easy adjustment of the relative positions of the first cuff structure 4, the second cuff structure 5, and the strap 6, while preventing displacement of the first cuff structure 4, the second cuff structure 5, and the strap 6 in the width direction.

[0155] It should be noted that the present invention is not limited to the above-described embodiment. For example, in the above-described example, the first pressing cuff 52 of the first cuff structure 4 and the second pressing 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 and 92 and the connecting portions 73 and 93 formed therein, and fluid connection is established within the fluid circuit 24.

[0156] However, the first compression cuff 52 and the second compression cuff 62 may also be in a structure of direct fluid connection. Figure 14 As shown, the first cuff structure 4 and the second cuff structure 5 may be configured such that the fluid path body 72 of the first pressing cuff 52 and the fluid path body 92 of the second pressing cuff 62 are integrally fluidically connected and connected to the fluid circuit 24 via a connection portion 93 formed on the fluid path body 72 or the fluid path body 92. With this configuration, the first pressing cuff 52 and the second pressing cuff 62 are connected while avoiding the protrusion 31b1 serving as the sensor portion. This prevents the first pressing cuff 52 and the second pressing cuff 62 from interfering with the protrusion 31b1 and thereby hindering the functions of the biosensor 20 and the charging terminal 214 provided on the protrusion 31b1.

[0157] In the above example, the first cuff structure 4 includes the first collar 51 , the first pressing cuff 52 , the back plate 53 , and the sensing cuff 54 , and the second cuff structure 5 includes the second collar 61 and the second pressing cuff 62 .

[0158] However, the first cuff structure 4 may be configured without at least one of the first collar 51 and the back plate 53, and the second cuff structure 5 may be configured without the second collar 61. It should be noted that when the first cuff structure 4 is configured without the first collar 51, the piece 7a and the first hook-and-loop fastener 7b of the restricting member 7 may be configured such that they are provided on the outer surface of the front end of the air bag 71 of the first pressing cuff 52 on the side opposite to the flow path body 72.

[0159] In addition, if Figure 14 and Figure 15 As shown, the first cuff structure 4 may also be configured without the sensing cuff 54. For example, when the first cuff structure 4 is configured without the sensing cuff 54, as shown in FIG. Figure 16 and Figure 17 As shown, the following structure can be adopted: the pressure sensor 17 is connected to the fluid of at least the first pressing cuff 52, and the blood pressure is obtained according to the pressure of the first pressing cuff 52. In addition, when a structure without a sensing cuff 54 is adopted, as shown in FIG. Figure 17 As shown, the first compression cuff 52 and the second compression cuff 62 can also be fluidically connected via the fluid circuit 24 in the device body 3. Figure 18 As shown, for example, the flow path body 72 and the flow path body 92 may be fluidically connected.

[0160] Furthermore, in the above example, the strap 6 is not fixed to the first cuff structure 4 and the second cuff structure 5. However, a configuration in which the strap 6 is fixed to the second cuff structure 5, which is positioned on the outer side when the first cuff structure 4 and the second cuff structure 5 overlap, may be employed. That is, even if the strap 6 is fixed to the second cuff structure 5, if the first cuff structure 4, which is closer to the wrist 300 than the second cuff structure 5, is not fixed to the strap 6, the first cuff structure 4 and the second cuff structure 5 can be securely fastened and tightly attached to the wrist 300 when the strap 6 is tightened.

[0161] In the above example, the device body 3 is configured such that the PPG sensor 20a, the SpO2 sensor 20b, and the ECG sensor 20c are provided as the biosensors 20 on the bottom 31b of the outer shell 31 forming the back side of the casing 11. However, the biosensor 20 may be any one of the PPG sensor 20a, the SpO2 sensor 20b, and the ECG sensor 20c. Furthermore, the device body 3 may be configured to include other sensors for acquiring biometric information in addition to or in place of these sensors 20a to 20c.

[0162] Furthermore, while the above example illustrates a configuration in which the blood pressure measurement device 1 includes a first cuff structure 4 and a second cuff structure 5 that can overlap with the first cuff structure 4 as a pair of overlapping cuffs, the present invention is not limited thereto. For example, the blood pressure measurement device 1 may also have a configuration that does not include the second cuff structure 5 but instead includes the device body 3, the first cuff structure 4, the strap 6, and the restricting member 7. In such a blood pressure measurement device 1, the restricting member 7 may be configured without the second restricting portion 7e.

[0163] In the above example, the restricting member 7 has a structure including a sheet 7a, a pair of hook-and-loop fasteners 7b and 7c, a first restricting portion 7d, and a second restricting portion 7e, but the present invention is not limited thereto. In other words, 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 strap 6 in the width direction while allowing them to move in the longitudinal direction. For example, Figure 19 As with the restriction member 7A in the other example shown, a structure may be employed in which protrusions 7f are provided at both ends of the first collar 51 and / or the second collar 61 of the first cuff structure 4 and / or the second cuff structure 5 in the width direction, so as to abut against the side surfaces of the strap 6 in the width direction. It should be noted that the restriction member may also be formed by a protrusion provided on one of the first collar 51 and / or the second collar 61 and the strap 6, and an opening provided on the other. In other words, the restriction member may be a member or portion provided on the first cuff structure 4 and / or the second cuff structure 5 and the strap 6 in the width direction.

[0164] That is, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made in the implementation stage without departing from the scope of the main purpose. In addition, the various embodiments can also be implemented in combination as much as possible, in which case, the effect of the combination can be obtained. Moreover, the above-mentioned embodiments include inventions at various stages, and various inventions can be extracted by appropriate combinations of the disclosed multiple constituent elements. It should be noted that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made in the implementation stage without departing from the scope of the main purpose. In addition, the various embodiments can also be implemented in combination as much as possible, in which case, the effect of the combination can be obtained. Moreover, the above-mentioned embodiments include various inventions, and various inventions can be extracted by combinations selected from the disclosed multiple constituent elements. For example, in the case where a problem can be solved and an effect can be obtained even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the structure in which the constituent elements are deleted can be extracted as an invention.

[0165] Description of Reference Numerals

[0166] 1: Blood pressure measuring device;

[0167] 3: device body;

[0168] 4: first cuff structure;

[0169] 5: Second cuff structure;

[0170] 6: strap;

[0171] 6a: hook and loop fastener;

[0172] 6b: pinch hand;

[0173] 7: Restriction member;

[0174] 7a: slice;

[0175] 7b: first hook and loop fastener (fixing member);

[0176] 7c: second hook and loop fastener (fixing member);

[0177] 7d: first limiting portion;

[0178] 7e: second limiting portion;

[0179] 7f: protrusion;

[0180] 11: Shell;

[0181] 12: Display unit;

[0182] 13: Operation unit;

[0183] 14: Pump;

[0184] 15: Acceleration sensor;

[0185] 16: valve;

[0186] 17: pressure sensor;

[0187] 18: Battery;

[0188] 19: Ministry of Communications;

[0189] 20: Biosensor;

[0190] 20a: PPG sensor;

[0191] 20b: SpO2 sensor;

[0192] 20c: ECG sensor;

[0193] 20c1: ECG electrodes;

[0194] 20d: first LED;

[0195] 20e: second LED;

[0196] 20f: first PD;

[0197] 20g: second PD;

[0198] 21: Charging circuit;

[0199] 22: memory;

[0200] 23: Processor;

[0201] 24: Fluid circuit;

[0202] 24a: Flow plate;

[0203] 24b: throttle element;

[0204] 25: substrate;

[0205] 25a: control substrate;

[0206] 25b: sensor main substrate;

[0207] 25c: sensor sub-substrate;

[0208] 31: outline shell;

[0209] 31a: peripheral wall;

[0210] 31b: bottom (back);

[0211] 31b1: protrusion (sensor portion);

[0212] 31b1: sensor unit;

[0213] 31b2: window;

[0214] 31b3: hole;

[0215] 31b4: opening;

[0216] 31b5: hood;

[0217] 31b6: vent;

[0218] 31b7: Waterproof and breathable sheet;

[0219] 31c: annulus;

[0220] 31d: opening;

[0221] 32: Windshield;

[0222] 33: cuff cover;

[0223] 33a: opening;

[0224] 33b: hole;

[0225] 41: button;

[0226] 43: touch panel;

[0227] 51: first clamping ring;

[0228] 52: First press the cuff;

[0229] 53: back panel;

[0230] 54: Sensing cuff;

[0231] 61: second clamping ring;

[0232] 62: Second compression cuff;

[0233] 71: air bag;

[0234] 72: Flow path body;

[0235] 73: connecting part;

[0236] 81: air bag;

[0237] 82: Flow path body;

[0238] 83: connecting part;

[0239] 91: air bag;

[0240] 92: Flow path body;

[0241] 93: connecting part;

[0242] 100: power transmission device;

[0243] 101: Power supply;

[0244] 102: Ministry of Power Transmission;

[0245] 103: antenna unit;

[0246] 104: power transmission terminal;

[0247] 211: antenna unit;

[0248] 212: Power receiving unit;

[0249] 213: Charging unit;

[0250] 214: Charging terminal;

[0251] 214a: terminal;

[0252] 300: wrist;

[0253] 311: radial artery;

[0254] 312: Ulnar artery.

Claims

1. A blood pressure measurement device, comprising: Device body; a first cuff, provided on the device body, pressing the biological body; a strap provided on an outer surface side of the first cuff and wrapped around the biological body; and The restriction member restricts relative movement of the first cuff and the belt in the width direction and enables relative movement of the first cuff and the belt in the longitudinal direction.

2. The blood pressure measurement device according to claim 1, wherein The limiting member comprises: a sheet fixed to the device body side of the first cuff and capable of being separated from the front end side of the first cuff; a fixing member provided on a portion of the sheet and the first cuff facing each other, for fixing the sheet and the first cuff; and The first restricting portion is provided on the binding belt, can be inserted into the sheet, and restricts movement of the sheet in the width direction.

3. The blood pressure measurement device according to claim 2, wherein: The sheet, the fixing member, and the first limiting portion are formed to have the following lengths and / or positions: when the band is wrapped around the biological body with the minimum circumference and the maximum circumference assumed to be worn, the sheet can be inserted into the first limiting portion and the sheet and the first cuff can be fixed by the fixing member.

4. The blood pressure measurement device according to claim 1, wherein The blood pressure measurement device includes a second cuff that can overlap the first cuff outside the first cuff. The restriction member restricts relative movement of the second cuff and at least one of the first cuff and the belt in the width direction.

5. The blood pressure measurement device according to claim 4, wherein The limiting member comprises: a sheet fixed to the device body side of the first cuff and capable of being separated from the front end side of the first cuff; a fixing member provided on a portion of the sheet and the first cuff that is opposed to each other; a first limiting portion, provided on the inner surface of the binding band, capable of being inserted into the sheet and limiting movement of the sheet in the width direction; and The second restricting portion is provided on the inner surface of the second cuff, is capable of receiving the sheet and restricting movement of the sheet in the width direction.

6. The blood pressure measurement device according to claim 5, wherein The sheet, the fixing member, the first limiting portion, and the second limiting portion are formed to have the following lengths and / or positions: when the strap is wrapped around the biological body with the minimum circumference and the maximum circumference assumed to be worn, the sheet can be inserted into the first limiting portion and the second limiting portion, and the sheet and the first cuff can be fixed by the fixing member.

Images