Cuff structure and blood pressure measuring device

Abstract

A cuff structure (3) for use in a blood pressure measurement device (1) is provided with: one or more air bags (71, 81) that are inflated by a fluid; and one or more members (51, 53, 71, 81) included in the air bag (71, 81) or laminated on the air bag (71, 81), bent portions (55) being provided on at least two of the air bag (71, 81) and the one or more members (51, 53), one of the bent portions (55) being formed by an opening or a divided portion, and the other of the bent portions (55) being formed by an opening, a divided portion, a cutout, a recess, or a groove.

Description

Technical Field

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

[0002] In recent years, blood pressure measuring devices for measuring blood pressure have been used as a way to check health status not only in medical facilities but also at home. The blood pressure measuring device, for example, inflates and deflates a cuff wrapped around an upper arm or wrist of a living body, detects the pressure of the cuff through a pressure sensor, and thereby detects the vibration of the arterial wall to measure blood pressure.

[0003] As a cuff for such a blood pressure measuring device, a cuff with a laminated structure is known, as disclosed in Japanese Patent Publication No. 2001-224558. The cuff with a laminated structure prevents lateral expansion by providing a connecting portion and hardening the side wall portion, thereby achieving a cuff that does not change in width even if expansion occurs, thereby enabling efficient compression. On the other hand, the cuff with a laminated structure has the following problem: the provision of a connecting portion prevents the collar portion from expanding outward, thereby making a compromise between compression efficiency and ease of lateral expansion.

[0004] In addition, it is generally difficult to adjust the material strength, that is, the thickness and hardness of the sheet member forming the cuff, and the strength of the entire cuff is adjusted, and it is impossible to limit the strength to the part that is prone to lateral expansion to improve the strength. In addition, the cuff with a stacked structure is made by stacking multiple sheet members, so there is a problem that it has thickness and is prone to wrinkles. When wrinkles occur on the cuff, the space inside the cuff will be cut off, and there is a problem of reduced blood pressure measurement accuracy.

[0005] Therefore, as a conventional cuff wrinkle control method, a technique of controlling wrinkles by providing notches in a partition sheet is known, as disclosed in Japanese Patent No. 6751462. This technique aims to reduce stress concentration by forming large curved wrinkles into gentle wrinkles.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2001-224558

[0009] Patent Document 2: Japanese Patent No. 6751462 Summary of the invention

[0010] Problems to be solved by the invention

[0011] In the cuff wrinkle control method, when the cuff is wound around a measuring portion with a small curvature, wrinkles will also occur in places other than the position where the notch is provided, so that the effect cannot be fully exerted. In addition, as in the above-mentioned laminated structure, when the cuff itself has thickness, the effect cannot be fully exerted due to this.

[0012] Therefore, an object of the present invention is to provide a cuff structure and a blood pressure measurement device that can control the generated wrinkles.

[0013] Technical Solution

[0014] According to one scheme, a cuff structure is provided, which is used in a blood pressure measuring device, and the cuff structure comprises: one or more air bags that are inflated by a fluid; and one or more components, included in the air bag or stacked on the air bag, wherein a bending portion is provided on at least two of the air bag and the one or more components, one side of the bending portion is formed by an opening or a dividing portion, and the other side of the bending portion is formed by an opening, a dividing portion, a notch, a recess or a groove.

[0015] According to this scheme, in the cuff structure, the strength of two or more components is weakened by the bent portion including the opening, so that the wrinkles generated in the curved air bag when the cuff structure is worn on the biological body can be controlled. Therefore, the cuff structure can generate desired wrinkles, so that the generation of unintentional wrinkles that are too deep can be prevented. As a result, the cuff structure can stably perform blood pressure measurement using a blood pressure measurement device.

[0016] A cuff structure is provided. In the cuff structure of one of the above schemes, the structure comprises: a clamp ring as the component, the clamp ring is bent to imitate the circumferential shape of the wearing part of the biological body; a pressing cuff fixed to the inner circumferential surface of the clamp ring, including the air bag; a back plate as the component, fixed to the inner circumferential surface of the pressing cuff; and a sensing cuff fixed to the inner circumferential surface of the back plate, including the air bag.

[0017] According to this aspect, the wrinkles of the compression cuff and the sensing cuff which compress the living body and which have a great influence on stress concentration and reduction in compression efficiency can be controlled, and blood pressure measurement can be performed stably.

[0018] A cuff structure is provided. In the cuff structure of one embodiment, the air bag includes an intermediate sheet member, and the bent portion formed in the air bag is one or more openings formed in the intermediate sheet member and / or a recessed portion formed on the surface of the air bag.

[0019] According to this aspect, the cuff structure can reduce the strength of the air bag that generates wrinkles, so it is easy to control the wrinkles generated in the air bag. Therefore, the cuff structure can reduce the influence of the hardness of the air bag on the control of wrinkles.

[0020] A cuff structure is provided. In the cuff structure of the above-mentioned aspect, the bent portion formed on the back plate is an opening, a partition, a notch or a groove formed on the back plate.

[0021] According to this aspect, the cuff structure can reduce the strength of the back plate to which the sensing cuff is fixed, so it is easy to control wrinkles generated in the sensing cuff.

[0022] A cuff structure is provided. In the cuff structure of one of the above schemes, the clamp ring, the pressing cuff, the back plate and the sensing cuff are formed to be long in one direction, and the bending portions provided in at least two of the clamp ring, the pressing cuff, the back plate and the sensing cuff are arranged in a plurality in the one direction.

[0023] According to this aspect, the cuff structure has a plurality of folds arranged in one direction, so that wrinkles generated in the air bag can be dispersed. The cuff structure can suppress the generation of deep wrinkles by providing the wrinkles dispersedly.

[0024] A cuff structure is provided. In the cuff structure of one of the above schemes, the bending portions provided on at least two of the clamping ring, the pressing cuff, the back plate and the sensing cuff are configured to at least partially overlap with the bending portions adjacent to the stacking direction, and / or be offset in one direction from the bending portions adjacent to the stacking direction.

[0025] According to this scheme, by at least partially overlapping the bent portions provided in two or more components, wrinkles can be generated at a target predetermined position. In addition, by staggering the bent portions provided in two or more components, wrinkles can be finely dispersed. In this way, the position and number of wrinkles can be arbitrarily set by configuring the bent portions of the cuff structure.

[0026] According to one aspect, there is provided a blood pressure measurement device including: the cuff structure of the above-mentioned aspect; a device body fixed to the cuff structure; and a band provided on the device body to fix the cuff structure.

[0027] According to this aspect, by providing a blood pressure measurement device having the above-described cuff structure, variations in wrinkles caused by the state of wearing and the shape of the wrist can be suppressed, and variations in the accuracy of blood pressure measurement caused by the wrinkles can be suppressed.

[0028] Effects of the Invention

[0029] According to the present invention, a cuff structure and a blood pressure measurement device capable of controlling the occurrence of wrinkles can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a perspective view showing the structure of a blood pressure measurement device according to an embodiment of the present invention.

[0031] Figure 2 It is a side view showing the structure of the blood pressure measurement device.

[0032] Figure 3 This is a side view showing the structure of the blood pressure measurement device in a state of being worn on a wrist.

[0033] Figure 4 This is a block diagram showing the structure of the blood pressure measurement device.

[0034] Figure 5 This is an explanatory diagram schematically showing the structure of a cuff structure used in the blood pressure measurement device when it is developed from the side.

[0035] Figure 6 It is a cross-sectional view schematically showing the structure of a cuff used in the cuff structure.

[0036] Figure 7 is a cross-sectional view schematically showing another example of the cuff.

[0037] Figure 8 is a cross-sectional view schematically showing another example of the cuff.

[0038] Fig. 9 It is a plan view schematically showing the structure of the folded portion used in the cuff structure.

[0039] Fig.10 It is a top view schematically showing the structure of another example of the bent portion.

[0040] Fig.11 It is a top view schematically showing the structure of another example of the bent portion.

[0041] Fig.12 It is a top view schematically showing the structure of another example of the bent portion.

[0042] Fig.13 It is a top view schematically showing the structure of another example of the bent portion.

[0043] Fig.14 It is a top view schematically showing the structure of another example of the bent portion.

[0044] Fig.15It is a top view schematically showing the structure of another example of the bent portion.

[0045] Fig.16 It is a top view schematically showing the structure of another example of the bent portion.

[0046] Fig.17 It is a cross-sectional view schematically showing the structure of another example of the bent portion.

[0047] Fig.18 It is a top view schematically showing the structure of another example of the bent portion.

[0048] Fig.19 It is a top view schematically showing the structure of another example of the bent portion.

[0049] Fig. 20 It is a top view schematically showing the structure of another example of the bent portion.

[0050] Fig.21 It is a top view schematically showing the structure of another example of the bent portion.

[0051] Fig. 22 This is a plan view schematically showing the structure of the folded portion used in the cuff structure in a developed state.

[0052] Fig.23 This is a plan view schematically showing the structure of the folded portion used in the cuff structure in a developed state.

[0053] Fig.24 It is an explanatory diagram showing the evaluation results of the cuff structure in comparison with a comparative example. DETAILED DESCRIPTION

[0054] Below, use Figures 1 to 24 An example of the blood pressure measurement device 1 according to the embodiment of the present invention will be described.

[0055] Figure 1 1 is a perspective view showing the structure of a blood pressure measurement device 1 according to an embodiment of the present invention. Figure 2 It is a side view showing the structure of the blood pressure measurement device 1 . Figure 3 This is a side view showing the structure of the blood pressure measurement device 1 in a state where the blood pressure measurement device 1 is worn on the wrist 300 . Figure 4 1 is a block diagram showing the configuration of the device body 3 of the blood pressure measurement device 1 .

[0056] Figure 5 This is an explanatory diagram schematically showing the structure of the cuff structure 4 used in the blood pressure measurement device 1 in a developed state and from the side. Figure 6It is a cross-sectional view schematically showing the structure of a pressing cuff 52 and a sensing cuff 54 as cuffs used in the cuff structure 4 . Figure 7 2 is a cross-sectional view schematically showing another example of the pressing cuff 52 . Figure 8 2 is a cross-sectional view schematically showing another example of the sensing cuff 54 . Figures 9 to 21 It is a diagram schematically showing an example of the bent portion 55 provided in each member of the cuff structure 4 . Fig.24 It is an explanatory diagram showing the evaluation results of the cuff structure 4 in comparison with the comparative example.

[0057] The blood pressure measuring device 1 is an electronic blood pressure measuring device that is worn on a living body. Figure 3 As shown, the blood pressure measurement device 1 is a wearable device mounted on a wrist 300. The blood pressure measurement device 1 is, for example, an electronic blood pressure measurement device that measures blood pressure from arteries 311 and 312 of the wrist 300.

[0058] like Figures 1 to 3 As shown, the blood pressure measurement device 1 includes, for example, a device body 3 , a cuff structure 4 , and a strap 5 .

[0059] like Figures 1 to 4 As shown, the device body 3 includes, for example, a housing 11 , a display unit 12 , an operation unit 13 , a pump 14 , an acceleration sensor 15 , a valve 16 , a pressure sensor 17 , a battery 18 , a communication unit 19 , a charging circuit unit 21 , a memory 22 , and a processor 23 .

[0060] The housing 11 is a shell that accommodates the components of the device body 3. The housing 11 accommodates, for example, a display unit 12, an operation unit 13, a pump 14, an acceleration sensor 15, a valve 16, a pressure sensor 17, a battery 18, a communication unit 19, a biosensor 20, a charging circuit unit 21, a memory 22, and a processor 23. In addition, the housing 11 accommodates, for example, a fluid circuit 24. It should be noted that, here, the fluid circuit 24 may include, for example: a pipe forming a flow path of the fluid supplied from the pump 14 to the cuff structure 4, a flow path plate, a flow blocker that controls the supply amount and pressure of the fluid supplied to the cuff structure 4, and other components, and a one-way valve that controls the flow direction of the fluid.

[0061] The housing 11 includes, for example, a shell casing 31 , a damper 32 covering an upper opening of the shell casing 31 , and a rear cover 33 covering a lower portion of the shell casing 31 .

[0062] The contour shell 31 is formed, for example, in a cylindrical shape, a rectangular cylindrical shape, a polygonal cylindrical shape, etc. In the present embodiment, an example in which the contour shell 31 is formed in a rectangular cylindrical shape is shown. The contour shell 31 has a ring portion 31a provided on one side of the outer peripheral surface. The ring portion 31a is a rectangular ring-shaped member having an opening that is longer in one direction through which the strap 5 can be inserted, so that the strap 5 can pass through and fold the strap 5 back. The ring portion 31a is formed integrally with the contour shell 31. The windshield 32 is the same shape as the outer peripheral edge shape of the contour shell 31, and is a rectangular glass plate in the present embodiment. It should be noted that the windshield 32 can be made of a transparent or light-transmitting material, and is not limited to a glass plate. The rear cover 33 closes the bottom of the contour shell 31. It should be noted that the housing 11 may also adopt a structure in which the bottom of the contour shell 31 is closed by a collar 51 described later fixed to the cuff structure 4 of the housing 11, without having a rear cover 33.

[0063] The display unit 12 is arranged just 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. The display unit 12 displays various information including date and time, blood pressure values ​​such as the highest blood pressure and the lowest blood pressure, measurement results such as heart rate, and information such as the charging status and remaining amount of the battery 18. The display unit 12 is formed in the same shape as the windshield 32 when viewed from above, for example.

[0064] The operation unit 13 is configured to be able to input commands from the user. The operation unit 13 includes, for example, a plurality of buttons 41 provided on the housing 11; a sensor that detects the operation of the buttons 41; and a touch panel 43 provided on the display unit 12 or the windshield 32. The operation unit 13 converts the command into an electrical signal by the user's operation. The sensor and the touch panel 43 are electrically connected to the processor 23 and output electrical signals to the processor 23.

[0065] The pump 14 is, for example, a piezoelectric pump and compresses air as a fluid, for example, and supplies the compressed air to a compression cuff 52 and a sensing cuff 54 of the cuff structure 4 , which will be described later, through a fluid circuit. The pump 14 is electrically connected to the processor 23 .

[0066] 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.

[0067] The valve 16 is, for example, an on-off valve. The valve 16 opens and closes the fluid circuit connecting the pump 14 and the cuff structure 4 and / or the fluid circuit connecting the cuff structure 4 and the atmosphere. The valve 16 is electrically connected to the processor 23. For example, the valve 16 is opened and closed by the control of the processor 23.

[0068] As a specific example, valve 16 is a safety valve that releases the air supplied to the later-described pressing cuff 52 and sensing cuff 54 of the cuff structure 4 to the atmosphere. When the valve 16 supplies air to the pressing cuff 52 and the sensing cuff 54, for example, when measuring blood pressure, the valve 16 is switched to a closed state by being controlled by the processor 23. In addition, when the 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 also be provided in the fluid circuit 24, and can also be integrally provided inside the housing of the pump 14.

[0069] The pressure sensor 17 is provided in the fluid circuit 24, for example. The pressure sensor 17 detects the pressure of the pressing cuff 52 and / or the sensing cuff 54. For example, the pressure sensor 17 detects the pressure of the sensing cuff 54. The pressure sensor 17 is electrically connected to the processor 23, for example, via an A / D conversion circuit, converts the detected pressure into an electrical signal, and outputs it to the processor 23.

[0070] The battery 18 is, for example, a secondary battery such as a lithium ion battery that can be charged / discharged. The battery 18 is electrically connected to the processor 23. The battery 18 supplies power to the processor 23. The battery 18 supplies driving power to each structure of the processor 23, and supplies driving power to the display unit 12, the operation unit 13, the pump 14, the acceleration sensor 15, the valve 16, the pressure sensor 17, and the communication unit 19 via the processor 23.

[0071] The communication unit 19 is configured to be able to send and receive information with an external device wirelessly and / or wired. The communication unit 19 is, for example, a wireless communication module that complies with wireless communication standards. The communication unit 19 sends information obtained by the processor 23, measured blood pressure values, pulse and other information to an external device, and also receives a program for software update from an external device and sends it to the control unit. In this embodiment, the external device is, for example, an external terminal such as a smart phone, a tablet terminal, a personal computer, a smart watch, etc.

[0072] In this embodiment, the communication unit 19 can be connected to the external terminal directly or via a network. The communication unit 19 can also be connected to the external terminal via a mobile communication network such as 4G (fourth generation mobile communication technology) and 5G (fifth generation mobile communication technology), Wimax (World Interoperability for Microwave Access), Wi-Fi (registered trademark) and other wireless communication lines. In addition, the communication unit 19 can also be connected to the external device through a wireless communication unit such as BLE (Bluetooth (registered trademark) Low Energy), NFC (Near Field Communication), and infrared communication. In addition, the communication unit 19, for example, has a universal connector such as a micro USB (Universal Serial Bus) and a dedicated connector for the blood pressure measurement device 1 in addition to a wireless communication module, and can also be directly connected to the external terminal through various cables such as a USB cable or connected to the external terminal via a wired communication line such as a LAN (Local Area Network). Therefore, the communication unit 19 can also be a structure including multiple communication units 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 .

[0073] The biosensor 20 is formed to be able 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 can be, for example, a sensor for measuring physical quantities such as heart rate and body temperature, and can also be a sensor for measuring chemical values ​​such as blood sugar level and blood oxygen concentration. For example, the biosensor 20 is provided on the rear cover 33 of the housing 11 and / or the later-described collar 51 of the cuff structure 4. In the present embodiment, an example in which the biosensor 20 is provided on the collar 51 is shown. It should be noted that the blood pressure measurement device 1 can also be a structure without the biosensor 20.

[0074] The charging circuit unit 21 includes, for example, an antenna unit 211, a power receiving unit 212, and a charging unit 213. The charging circuit unit 21 charges the battery 18 by wireless power supply. For example, the charging circuit unit 21 receives the transmission power transmitted from the antenna unit 103 of the power transmission device 100 provided outside, and charges the battery 18.

[0075] The antenna unit 211 receives the power transmitted from the antenna unit of the power transmission device. The antenna unit 211 is, for example, a power receiving coil as a power receiving resonance circuit. The antenna unit 211 supplies the received power to the power receiving unit 212. The power receiving surface of the antenna unit 211 is formed in a planar shape. The antenna unit 211 is, for example, arranged in the housing 11. As a specific example, the antenna unit 211 is disposed in the housing 11 on the side of the display unit 12 opposite to the windshield 32, and is adjacent to the display unit 12. The antenna unit 211 includes, for example, a resonant capacitor, and constitutes a power receiving resonance circuit.

[0076] The power receiving unit 212 rectifies the power received by the antenna unit 211 and supplies it to the charging unit 213. As a specific example, the power receiving unit 212 rectifies the power received from the antenna unit 211 and converts it from AC to DC. For example, the power receiving unit 212 includes a rectifier circuit and a control circuit, and the control circuit controls the operation of the rectifier circuit to output the rectified DC power to the charging unit 213.

[0077] The charging unit 213 supplies the power supplied from the power receiving unit 212 as power for charging to the battery 18. For example, the charging unit 213 converts the power supplied from the power receiving unit 212 into a predetermined current value and voltage value and supplies the converted power to the battery 18. In addition, for example, the charging unit 213 may include a circuit that outputs the charging state of the battery 18 to the power receiving unit 212 and / or the processor 23.

[0078] The memory 22 includes, for example, a RAM (Random Access Memory) and a ROM (Read Only Memory). The memory 22 stores various data. For example, the memory 22 stores in advance in a changeable manner various program data such as programs and applications for controlling the entire blood pressure measurement device 1 and the pump 14, setting data for setting various functions of the blood pressure measurement device 1, and calculation data for calculating the blood pressure value and pulse based on the pressure measured by the pressure sensor 17.

[0079] The processor 23 controls the overall operation of the blood pressure measurement device 1 and the operation of the pump 14 and the valve 16 based on the program stored in the memory 22, thereby performing a prescribed operation (function). In addition, the processor 23 performs prescribed calculations, analyses, processes, etc. according to the read program. The processor 23 is a computing device such as a CPU (Central Processing Unit). For example, in addition to the main CPU, the processor 23 may also include a sub-CPU. In addition, the processor 23 displays the status and results of various actions and calculations, analyses, processes, etc. performed on the display unit 12 through programs or applications.

[0080] The cuff structure 4 includes, for example, a collar 51, a pressing cuff 52, a back plate 53, a sensing cuff 54, and a bent portion 55. The cuff structure 4 is formed by stacking the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54. In addition, the cuff structure 4 has the bent portion 55 formed on at least two of the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54, which are multiple members constituting the cuff structure 4. In addition, for example, the cuff structure 4 may also be a structure in which the bent portion 55 is formed on multiple members constituting the pressing cuff 52 and / or the sensing cuff 54, such as the sheet members 75, the sheet member 85 and the intermediate sheet members 76, the intermediate sheet member 86 described later.

[0081] Below, use Figures 1 to 3 , Figures 5 to 23 A specific example of the cuff structure 4 will be described. Figures 1 to 3 , Figure 5 As shown, the cuff structure 4 includes a collar 51 , a pressing cuff 52 , a back plate 53 , a sensing cuff 54 , and a plurality of bent portions 55 formed in the pressing cuff 52 , the back plate 53 , and the sensing cuff 54 .

[0082] The collar 51 is fixed to the wrist side of the housing 11 at one end, for example. The collar 51 is formed into a band shape that is bent into a shape that imitates the circumferential direction of the wrist 300. The collar 51 is made of a resin material. In addition, the collar 51 has a decorative sheet 51a such as an outer cloth that is provided on the outer peripheral surface side by welding, bonding or integral molding to improve the design. The collar 51 has a hardness that has flexibility and shape retention. Here, flexibility means that the shape is deformed in the radial direction when an external force of the strap 5 is applied to the collar 51. Shape retention means that the collar 51 can maintain a shape given in advance when no external force is applied. That is, the collar 51 is formed of a resin material that has a hardness that does not cause compression deformation or almost does not cause compression deformation, but can undergo elastic deformation such as bending deformation in which the shape, especially the curvature of the bending portion, changes. Therefore, the collar 51 is formed so that it can be elastically deformed in such a way that the internal space of the wrist 300 to be worn is enlarged or reduced in accordance with the shape of the wrist when an external force is applied.

[0083] In addition, the collar 51 is formed so that one side is longer than the other side from the part fixed to the housing 11. For example, both ends of the collar 51 are formed to have such lengths and shapes that, when worn on either of the wrist 300 with the longest circumference and the wrist 300 with the shortest circumference among the assumed wearer, they are located on one side of the wrist 300 between the palm side and the back side of the wrist 300. In addition, the collar 51 may be formed in a shape that is entirely curved in the long dimension direction to imitate the shape of the wrist 300, or may be formed in a flat plate shape in a part of the long dimension direction.

[0084] As a specific example, the collar 51 is fixed to the outer shell 31 or the rear cover 33 of the housing 11. In addition, the collar 51 includes: a fixed portion 61, the portion fixed to the rear cover 33 is formed in a flat plate shape; a first curved portion 62, provided at one end of the fixed portion 61, and curved with a predetermined curvature radius; and a second curved portion 63, provided at the other end of the fixed portion 61, and curved with a predetermined curvature radius.

[0085] The first curved portion 62 is formed to have a length from the fixed portion 61 to one side of the wrist 300. In addition, the biosensor 20 is provided, for example, on the inner surface of the end side of the first curved portion 62. The second curved portion 63 is formed to have a length from the fixed portion 61 to the side of one side of the wrist 300 where the end of the first curved portion 62 is arranged, beyond the other side of the wrist 300 and the palm side of the wrist 300.

[0086] For example, one of the end of the first curved portion 62 and the end of the second curved portion 63 is located radially outward of the other. Figure 2 and Figure 3 As shown in FIG. 1 , the end of the second curved portion 63 is located radially outward of the end of the first curved portion 62. Figure 2 As shown by the double dotted line in the middle, the structure can also be as follows: before the external force is applied to the retaining ring 51, the end of the second bend 63 is located radially outside the end of the first bend 62 and is separated in the circumferential direction, and the ends of the first bend 62 and the second bend 63 are separated.

[0087] For example, the lengths of the first curved portion 62 and the second curved portion 63 are such that, when the blood pressure measurement device 1 is worn on the wrist 300 having the longest circumference among the wrists 300 on which the blood pressure measurement device 1 is supposed to be worn, the second curved portion 63 faces the part of the wrist 300 where the two arteries 311 and 312 exist, the second curved portion 63 is disposed at a part of the side of the wrist 300, and the end of the first curved portion 62 is separated from the end of the second curved portion 63. Here, the two arteries 311 and 312 refer to the radial artery 311 and the ulnar artery 312.

[0088] In addition, for example, the lengths of the first bend 62 and the second bend 63 are such that, when worn on the wrist 300 having the shortest circumference among the wrists 300 on which the blood pressure measurement device 1 is assumed to be worn, the second bend 63 is opposite to a portion of the wrist 300 where two arteries 311 and 312 exist, and the first bend 62 and the second bend 63 overlap on the side of the wrist 300.

[0089] Such a collar 51 has the largest curvature at the boundary (edge) between the fixed portion 61 and the first curved portion 62 and at the boundary (edge) between the fixed portion 61 and the second curved portion 63 .

[0090] The pressing cuff 52 is fixed to the inner peripheral surface of the collar 51 by double-sided tape, adhesive, thermal welding, etc. The pressing cuff 52 is provided at least in the area of ​​the second curved portion 63 where the artery of the wrist 300 exists. As a specific example, the pressing cuff 52 is provided in the area from the fixed portion 61 side of the first curved portion 62 including the ridge of the fixed portion 61 and the first curved portion 62 to the end side of the second curved portion 63 in the long dimension direction of the collar 51. The pressing cuff 52 is along the inner surface of the collar 51, and has the largest curvature at the boundary between the fixed portion 61 and the first curved portion 62 and the boundary between the fixed portion 61 and the second curved portion 63.

[0091] The pressing cuff 52 is fluidically connected to the pump 14 via a fluid circuit. One main surface of the pressing cuff 52 is fixed to the inner surface of the collar 51. For example, the pressing cuff 52 is attached to the inner surface of the collar 51 by a double-sided tape, an adhesive, etc. The pressing cuff 52 presses the back of the wrist 300 by inflating, and presses the back plate 53 and the sensing cuff 54 toward the wrist 300.

[0092] The compression cuff 52 includes, for example, a single or multiple air bags 71 and a connection portion such as a pipe joint provided on the air bag 71 and connected to the fluid circuit 24. Here, the air bag 71 is a bag-shaped structure. In this embodiment, the blood pressure measurement device 1 is a structure that uses air through the pump 14, so the air bag is used for description. However, when a fluid other than air is used, the bag-shaped structure can be any fluid bag that can be expanded by the fluid. The air bag 71 is formed in a rectangular bag shape that is long in one direction.

[0093] For example, the air bag 71 includes a plurality of sheet members 75 and a single intermediate sheet member 76 at least part of which has an opening 76a. The air bag 71 is formed in a bag shape in which the internal space is divided by the intermediate sheet member 76 and the intermediate sheet member 76 is divided into two fluid-connected chambers by fixing the plurality of sheet members 75 and the single or multiple intermediate sheet members 76 by heat welding or the like.

[0094] The air bag 71 is, for example, a cuff structure whose side wall is concave in a ∑ shape. The air bag 71 has a pair of main walls 71a in the thickness direction, each of which is formed by a portion of each sheet member 75, and a pair of side walls 71b in the short dimension direction, each of which is formed by the end portions of each sheet member 75 in the short dimension direction.

[0095] The sheet member 75 forms, for example, a pair of main walls 71a in the thickness direction of the air bag 71 and a portion of a pair of side walls 71b of the air bag 71. In the thickness direction of the air bag 71 (radial direction of the collar 51), the center side of the side wall 71b is recessed toward the inside of the air bag 71 in a Σ shape.

[0096] like Figure 6 As shown in FIG. 5 , when the air bag 71 provided in the pressing cuff 52 is single, the collar 51 and the back plate 53 are fixed to the main wall 71a. Figure 7 As shown, when there are multiple air bags 71 provided in the pressing cuff 52, the multiple air bags 71 are stacked to form an integral body, and the collar 51 is fixed to a main wall 71a of one side of the air bag 71 at one end side in the thickness direction of the multiple air bags 71, and the back plate 53 is fixed to a part of the main wall 71a of one side of the air bag 71 at the other end side in the thickness direction. Figure 7 As shown, the main walls 71a of the adjacent air bags 71 in the plurality of air bags 71 are fixed together by welding or the like, or are shared, and are formed with a single or multiple openings 75a for fluid communication between the adjacent air bags 71. In other words, Figure 7 As shown, a single or multiple openings 75 a for fluidly connecting adjacent air bags 71 are formed on the sheet member 75 that forms the opposing main walls 71 a of adjacent air bags 71 or the common main wall 71 a .

[0097] The air bag 71 having a pair of main walls 71a and a pair of side walls 71b is formed by welding a plurality of sheet members 75. Here, one air bag 71 may be formed by two sheet members 75, or may be formed by three or more sheet members 75, for example, by four sheet members 75 constituting each main wall 71a and each side wall 71b. That is, the number of sheet members 75 used to form the air bag 71 is not limited.

[0098] In addition, in the case of multiple air bags 71 stacked integrally, the sheet members 75 forming the main walls 71a of adjacent air bags 71 may be welded to each other. Furthermore, the main walls 71a of adjacent air bags 71 may be formed by a sheet member 75, and adjacent air bags 71 may share one main wall 71a.

[0099] The intermediate sheet member 76 is provided at the innermost portion of the side wall 71b. The intermediate sheet member 76 divides the air bag 71 into two chambers (spaces) in the thickness direction of the air bag 71. In addition, the intermediate sheet member 76 is formed with a single or multiple openings 76a that connect the two chambers in the air bag 71.

[0100] The material of the sheet member 75 and the intermediate sheet member 76 is, for example, a thermoplastic elastomer. Here, as the thermoplastic elastomer, for example, thermoplastic polyurethane resin (Thermoplastic PolyUrethane, hereinafter referred to as TPU), polyvinyl chloride resin (PolyVinyl Chloride), ethylene vinyl acetate resin (Ethylene-VinylAcetate), thermoplastic polystyrene resin (Thermoplastic PolyStyrene), thermoplastic polyolefin resin (Thermoplastic PolyOlefin), thermoplastic polyester resin (Thermoplastic Polyester) and thermoplastic polyamide resin (Thermoplastic PolyAmide) can be listed. It should be noted that as the thermoplastic elastomer used for the sheet member 75 and the intermediate sheet member 76, TPU is preferably used. In addition, the sheet member 75 and the intermediate sheet member 76 can have a single-layer structure, and can also have a multi-layer structure formed by stacking a plurality of resin materials. Alternatively, the air bag 71 may be formed of a thermoplastic elastomer such as TPU and then laminated with a cloth material.

[0101] The back plate 53 is fixed to the surface of the wrist 300 side of the pressing cuff 52 by double-sided tape, adhesive, etc. The back plate 53 is formed of a resin material. The back plate 53 is formed, for example, in the shape of a rectangular plate that is long in one direction. It should be noted that the back plate 53 may also be a divided structure, that is, a plurality of rectangular small pieces are arranged in one direction. The back plate 53 has shape-following properties.

[0102] Here, shape conformity 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 on which it is 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 via the sensing cuff 54.

[0103] The sensing cuff 54 is fixed to the main surface of the wrist side of the back plate 53. The sensing cuff 54 is in direct contact with the region of the wrist 300 where the artery 311 and the artery 312 exist, or is in indirect contact 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 a structure that is in contact with the region where the artery 311 and the artery 312 exist on one side of the wrist 300. The sensing cuff 54 is smaller than the pressing cuff 52 in the long dimension direction. In addition, the sensing cuff 54 is the same as or smaller than the pressing cuff 52 in the short dimension direction. The sensing cuff 54 is the same shape as the back plate 53 or smaller than the back plate 53 in the long dimension direction and the width direction of the back plate 53. The sensing cuff 54 compresses the region where the artery exists on the palm side of the wrist by inflating. The inflated pressing cuff 52 of the sensing cuff 54 presses toward the biological body side via the back plate 53.

[0104] As a specific example, the sensing cuff 54 includes one air bag 81 and a flow path body 82 .

[0105] Here, the air bag 81 is a bag-like structure. In the present embodiment, the blood pressure measurement device 1 is a structure that uses air through the pump 14. Therefore, an air bag is used for description. However, when a fluid other than air is used, the bag-like structure may be a liquid bag or the like.

[0106] The air bag 81 is formed in a rectangular shape that is long in one direction. For example, the air bag 81 includes a plurality of sheet members 85 and a single intermediate sheet member 86 having an opening 86a formed in at least a portion thereof. In the air bag 81, the plurality of sheet members 85 and the single or multiple intermediate sheet members 86 are fixed by heat welding or the like, whereby the internal space is divided by the intermediate sheet member 86, and the air bag 81 is formed in a bag shape divided into two chambers that are fluidically connected by the intermediate sheet member 86.

[0107] For example, Figure 6 As shown in FIG. 1 , the air bag 81 is a cuff structure in which the side wall is concave in a ∑ shape. The air bag 81 has a pair of main walls 81a in the thickness direction, each of which is formed by a portion of each sheet member 85, and a pair of side walls 81b in the short dimension direction, each of which is formed by the end portions of each sheet member 85 in the short dimension direction. It should be noted that Figure 8 As shown, the air bag 81 may be a single cuff structure obtained by welding the outer peripheral edges of two sheet members 85 instead of a cuff structure in which the side wall is recessed in a Σ shape.

[0108] The sheet member 85 forms, for example, a pair of main walls 81a in the thickness direction of the air bag 81 and a portion of a pair of side walls 81b of the air bag 81. The back plate 53 is fixed to one of the main walls 81a, and the other main wall 81a is in direct contact with the region of the wrist 300 where the two arteries 311 and 312 exist, or is in indirect contact via a cover or the like. In the thickness direction of the air bag 81 (radial direction of the collar 51), the center side of the side wall 81b is recessed in a ∑ shape toward the inside of the air bag 81.

[0109] The air bag 81 having a pair of main walls 81a and a pair of side walls 81b is formed by welding a plurality of sheet members 85. Here, one air bag 81 may be formed by two sheet members 85 or by three or more sheet members 85, for example, by four sheet members 85 constituting each main wall 81a and each side wall 81b. That is, the number of sheet members 85 used to form the air bag 81 is not limited.

[0110] The intermediate sheet member 86 is provided at the innermost portion of the side wall 81b. The intermediate sheet member 86 divides the air bag 81 into two chambers (spaces) in the thickness direction of the air bag 81. In addition, the intermediate sheet member 86 is formed with a single or multiple openings 86a that connect the two chambers in the air bag 81.

[0111] The material of the sheet member 85 and the intermediate sheet member 86 is, for example, a thermoplastic elastomer. Here, as the thermoplastic elastomer, for example, thermoplastic polyurethane resin (Thermoplastic PolyUrethane), polyvinyl chloride resin (PolyVinyl Chloride), ethylene vinyl acetate resin (Ethylene-Vinyl Acetate), thermoplastic polystyrene resin (Thermoplastic PolyStyrene), thermoplastic polyolefin resin (Thermoplastic PolyOlefin), thermoplastic polyester resin (Thermoplastic Polyester) and thermoplastic polyamide resin (Thermoplastic PolyAmide) can be listed. It should be noted that as the thermoplastic elastomer used for the sheet member 85 and the intermediate sheet member 86, TPU is preferably used. In addition, the sheet member 85 and the intermediate sheet member 86 can have a single-layer structure, and can also have a multi-layer structure formed by stacking a plurality of resin materials. Alternatively, the air bag 81 may be formed of a thermoplastic elastomer such as TPU and then laminated with a cloth material.

[0112] The flow path body 82 is provided integrally with a part of the edge of one side in the long dimension direction of the air bag 81, for example. The flow path body 82 is provided at the end of the air bag 81 close to the device body 3. 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 has a connection portion such as a pipe joint at the front end. The flow path body 82 is connected to the fluid circuit 24 via the connection portion, and constitutes a flow path between the fluid circuit 24 and the air bag 81.

[0113] The bent portion 55 is formed in at least two of the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54. The bent portion 55 suppresses wrinkles generated in the pressing cuff 52 and / or the sensing cuff 54 when the cuff structure 4 is wrapped around the wrist 300 and the pressing cuff 52 and the sensing cuff 54 are expanded, and controls the position where the wrinkles are generated.

[0114] In order to suppress and control wrinkles, a single or multiple bending portions 55 are provided in the formed collar 51, the pressing cuff 52, the back plate 53 and the sensing cuff 54. For example, the bending portion 55 formed on at least one of at least two components of the collar 51, the pressing cuff 52, the back plate 53 and the sensing cuff 54 is formed by an opening, and the bending portion 55 formed on other components is formed by an opening, a groove, a notch, a recess or by dividing the component. In addition, the shape of the bending portion 55 can be set to various shapes including a polygonal shape including a rectangular shape, a circular shape, a straight line shape, an irregular shape, etc. In addition, the number and configuration of the bending portion 55 can be appropriately set.

[0115] Below, refer to Figures 5 to 23 A specific example of the bent portion 55 will be described. Figures 5 to 23 In the figure, the description of the bending portion 55 is sometimes performed on the same drawing, and the description of the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54 is sometimes performed, and sometimes a plurality of reference numerals are given to one structure. Therefore, in each drawing, the shape is appropriately reduced, enlarged, or omitted for representation.

[0116] For example, Figure 5 and Fig. 22 As shown, the bending portion 55 is formed on the pressing cuff 52, the back plate 53 and the sensing cuff 54. As another example, Fig.23 As shown, the bending portion 55 is formed on the collar 51 , the pressing cuff 52 , the back plate 53 and the sensing cuff 54 , for example.

[0117] like Fig.23As shown in FIG. 1 , the bent portion 55 formed on the collar 51 is, for example, a plurality of recessed portions 51b formed on the inner surface of the collar 51. The recessed portion 51b is a groove that is recessed from the inner surface of the collar 51 toward the outer surface. The recessed portion 51b extends, for example, in the short dimension direction of the collar 51. The plurality of recessed portions 51b are arranged at equal intervals or as shown in FIG. Fig.23 As shown, the plurality of recesses 51b are arranged in one direction on the inner surface of the collar 51 at two or more predetermined different intervals. In addition, the shapes of the plurality of recesses 51b may be the same shape, or may be formed in different shapes such as width and depth. In addition, the bent portion 55 formed on the collar 51 may be any structure as long as it does not impair the function of the collar 51, and may be an opening, a notch, etc. In addition, the number, shape, and arrangement of the bent portions 55 formed on the collar 51 may be appropriately set.

[0118] For example, Figures 5 to 7 , Figures 9 to 15 , Figures 17 to 19 As shown in FIG. 1 , the bent portion 55 formed in the pressing cuff 52 is a single or multiple openings 76a formed in the middle sheet member 76. Fig.16 and Fig.17 As shown in FIG. 5 , the bent portion 55 formed in the pressing cuff 52 may be a recessed portion 75b formed in the sheet member 75 in addition to or in place of the opening 76a formed in the intermediate sheet member 76. Figure 5 , Figure 7 and Fig.19 As shown, when the pressing cuff 52 is formed by stacking a plurality of air bags 71, the bent portion 55 formed in the pressing cuff 52 may be a single or multiple openings 75a formed in the main wall 71a of the adjacent air bag 71 in addition to or instead of the opening 76a formed in the middle sheet member 76. Figures 9 to 15 as well as Fig.18 As shown, the number, shape, and arrangement of the bent portions 55 formed in the pressing cuff 52 as the openings 75 a and / or the openings 76 a can be appropriately set.

[0119] For example, the plurality of openings 75a may be Figures 9 to 13 , Fig.15 As shown, formed into the same shape, or as Fig.14 and Fig.18 As shown in FIG. 1 , the plurality of openings 75a are formed into two or more different shapes. Fig. 9 , Fig.10 , Fig.12 , Fig.15 as well as Fig.18 As shown, they are arranged at equal intervals, or as Fig.11 , Fig.13 as well as Fig.14As shown, the Fig.15 and Fig.18 As shown, a plurality of openings 75 a may be formed so as to be aligned in the long dimension direction and the short dimension direction of the sheet member 75 .

[0120] The recessed portion 75b extends, for example, in the short-dimension direction of the sheet member 75. The recessed portion 75b is, for example, a weld line that is sunken by heating the sheet member 75 from the surface of the sheet member 75 using a jig extending in the short-dimension direction. It should be noted that the bent portion 55 formed in the pressing cuff 52 may be a groove or a notch as long as it does not hinder the function of the pressing cuff 52. Fig.16 As shown, the plurality of recesses 75b are arranged in one direction at equal intervals or at two or more predetermined different intervals on the inner surface of the sheet member 75. The plurality of recesses 75b may have the same shape or may have different shapes such as width and depth.

[0121] The plurality of openings 76a are as follows Figures 9 to 13 , Fig.15 As shown, formed into the same shape, or as Fig.14 and Fig.18 As shown in FIG. 1 , the plurality of openings 76a are formed into two or more different shapes. Fig. 9 , Fig.10 , Fig.12 , Fig.15 as well as Fig.18 As shown, they are arranged at equal intervals, or as Fig.11 , Fig.13 as well as Fig.14 As shown, the Fig.15 and Fig.18 As shown, a plurality of openings 76 a may be formed so as to be aligned in the long dimension direction and the short dimension direction of the intermediate sheet member 76 .

[0122] The number, shape, interval, etc. of the openings 75a formed in the sheet member 75 and the openings 76a formed in the intermediate sheet member 76 may be the same or different. Figure 5 and Figure 7 In the example shown, the plurality of openings 75a formed in the sheet member 75 and the plurality of openings 76a formed in the intermediate sheet member 76 are arranged in different relationships, specifically, they are arranged staggered in the longitudinal direction. Fig.19 In the example shown, the plurality of openings 75a formed in the sheet member 75 and the plurality of openings 76a formed in the intermediate sheet member 76 are arranged in the same relationship, specifically, arranged at the same position in the longitudinal direction, and the openings 75a and 76a face each other.

[0123] For example, Figure 5 , Figures 9 to 15 , Fig.18 As shown in FIG. 1 , the bent portion 55 formed on the back plate 53 is a single or multiple openings 53a. In addition, the bent portion 55 formed on the back plate 53 can be as follows: Fig.16 As shown, there are multiple recesses 53b, which can also be as shown in Fig. 20 As shown in FIG. 5 , there are a plurality of notches 53c. Here, the recess 53b is, for example, a groove formed in the back plate 53. Fig.21 As shown, the bent portion 55 formed on the back plate 53 can also be configured to divide the back plate 53 into a plurality of small pieces 53d, and the gaps between adjacent small pieces 53d when the divided small pieces 53d are arranged in one direction. Figures 9 to 15 , Fig.18 , Fig. 20 as well as Fig.21 As shown, the number, shape, and arrangement of the bent portions 55 formed on the back plate 53 can be appropriately set.

[0124] For example, the plurality of openings 53a may be Figures 9 to 13 As shown, formed into the same shape, or as Fig.14 and Fig.18 As shown in FIG. 1 , the plurality of openings 53a are formed into two or more different shapes. Fig. 9 , Fig.10 , Fig.12 , Fig.15 as well as Fig.18 , Fig. 20 , Fig.21 As shown, they are arranged at equal intervals, or as Fig.11 , Fig.13 as well as Fig.14 As shown, the Fig.15 and Fig.18 As shown, a plurality of openings 53 a may be formed so as to be aligned in the long dimension direction and the short dimension direction of the back plate 53 .

[0125] The recess 53b extends, for example, in the short dimension direction of the back plate 53. The recess 53b is, for example, a groove formed by a mold during molding and extending from the surface of the back plate 53 to the back plate 53 in the short dimension direction. Fig.16 As shown, the plurality of recesses 53b are arranged in one direction at equal intervals or at two or more predetermined different intervals on the inner surface of the back plate 53. In addition, the plurality of recesses 53b may have the same shape or may have different shapes such as width and depth.

[0126] like Fig. 20As shown, for example, a pair of notches 53c are formed in the short dimension direction of the back plate 53. In other words, the plurality of notches 53c are symmetrically arranged with the center line along the long dimension direction of the back plate 53 as the center. In addition, the notches 53c are formed, for example, at the edge along the long dimension direction of the back plate 53, and are arranged in one direction at equal intervals or at two or more predetermined different intervals in the long dimension direction of the back plate 53. Fig.21 As shown, the divided small pieces 53d are arranged in one direction at equal intervals, for example.

[0127] For example, Figures 5 to 7 , Figures 9 to 15 , Figures 17 to 19 As shown, the bent portion 55 formed in the sensing cuff 54 is a single or multiple openings 86a formed in the middle sheet member 86. In addition, the bent portion 55 formed in the sensing cuff 54 may be a recessed portion 85b formed in the sheet member 85 in addition to or instead of the opening 86a formed in the middle sheet member 86.

[0128] For example, the plurality of openings 86a may be Figures 9 to 13 , Fig.15 As shown, formed into the same shape, or as Fig.14 and Fig.18 As shown, it is formed into two or more different shapes. A plurality of openings 86a are formed in the long dimension direction of the intermediate sheet member 86, such as Fig. 9 , Fig.10 , Fig.12 , Fig.15 as well as Fig.18 As shown, they are arranged at equal intervals, or as Fig.11 , Fig.13 as well as Fig.14 As shown, the Fig.15 and Fig.18 As shown, a plurality of openings 86 a may be formed so as to be aligned in the long dimension direction and the short dimension direction of the intermediate sheet member 86 .

[0129] The recessed portion 85b extends, for example, in the short-dimension direction of the sheet member 85. The recessed portion 85b is, for example, a weld line that is sunken by heating the sheet member 85 from the surface of the sheet member 85 using a jig extending in the short-dimension direction. It should be noted that the bent portion 55 formed on the sensing cuff 54 may be a groove or a notch as long as it does not hinder the function of the sensing cuff 54. Fig.16 As shown, the plurality of recesses 85b are arranged in one direction at equal intervals or at two or more predetermined different intervals on the inner surface of the sheet member 75. The plurality of recesses 85b may have the same shape or may have different shapes such as width and depth.

[0130] like Fig. 22 As shown, in the cuff structure 4 thus configured, for example, the bent portions 55 formed in each member may be staggered in the long dimension direction of the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54 so as to partially overlap in the stacking direction of the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54. In addition, in the cuff structure 4, for example, the bent portions 55 formed in each member may be staggered in the long dimension direction of the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54 so as not to overlap in the stacking direction of the collar 51, the pressing cuff 52, the back plate 53, and the sensing cuff 54.

[0131] In addition, if Fig.23 As shown, in the cuff structure 4, for example, a portion of the bent portion 55 formed on each component may be arranged at the same position in the long dimension direction of the collar 51, the pressing cuff 52, the back plate 53 and the sensing cuff 54 in a manner that they are completely overlapped in the stacking direction of the collar 51, the pressing cuff 52, the back plate 53 and the sensing cuff 54, and the remaining portion of the bent portion 55 formed on each component may be arranged partially or completely staggered in the long dimension direction.

[0132] In addition, in the cuff structure 4, for example, all of the bent portions 55 formed in each component may be arranged at the same position in the long dimension direction of the collar 51, the pressing cuff 52, the back plate 53 and the sensing cuff 54 in a manner that overlaps in the stacking direction of the collar 51, the pressing cuff 52, the back plate 53 and the sensing cuff 54.

[0133] The strap 5 makes the cuff structure 4 fit closely to the wrist 300 and fixes the cuff structure 4. The strap 5 is provided at one of the first curved portion 62 or the second curved portion 63 of the collar 51. The strap 5 is formed in a belt shape, for example. Figure 2 and Figure 3 As shown, the strap 5 is inserted into the loop 31a provided on the outer shell 31 and folded back. The strap 5 has, for example, a pair of hook-and-loop fasteners 5a with a hook formed on one side and a loop formed on the other side, and the strap 5 with the end side inserted into the loop 31a is fixed by mutual engagement.

[0134] In the present embodiment, the band 5 is provided at the front end of the second curved portion 63 , and the ring portion 31 a is provided on the outer surface of the side of the profile housing 31 where the first curved portion 62 is provided.

[0135] It should be noted that the strap 5 may also be a structure having a first strap and a second strap, wherein the first strap is called a so-called mother strap having a buckle, and the second strap is called a so-called hook strap having a plurality of small holes for inserting the buckle tongue.

[0136] Next, an example of a power transmission device 100 that transmits power to the charging circuit unit 21 of the device body 3 will be described. Figure 4 As shown, power transmission device 100 includes power supply 101, power transmission unit 102, and antenna unit 103. Power supply 101 is, for example, an AC adapter connected to a commercial power source. Power supply 101 converts AC power input from a commercial power source into DC power and supplies the DC power to power transmission unit 102.

[0137] The power transmission unit 102 generates AC power as transmission power from the DC power supplied from the power supply 101, and supplies it to the antenna unit 103. The power transmission unit 102 generates AC power having the same or substantially the same frequency as the resonance frequency of the power transmission resonance circuit of the antenna unit 103, for example.

[0138] The antenna unit 103 is, for example, a power transmission coil as a power transmission resonance circuit. The power transmission surface of the antenna unit 103 is formed in a planar shape. The antenna unit 103 transmits power to the antenna unit 211 of the device body 3. The antenna unit 103 includes, for example, a resonant capacitor and constitutes a power transmission resonance circuit.

[0139] According to the blood pressure measurement device 1 configured as above, the bent portion 55 is formed in at least two of the plurality of members constituting the cuff structure 4, namely, the collar 51, the air bag 71 pressing the cuff 52, the back plate 53, and the air bag 81 of the sensing cuff 54. In addition, a structure is adopted in which, among at least two members of the collar 51, the air bag 71 pressing the cuff 52, the back plate 53, and the air bag 81 of the sensing cuff 54, the bent portion 55 formed in at least one member includes an opening, and the bent portion 55 formed in the remaining members includes an opening, a partition, a notch, or a groove.

[0140] With these structures, the strength of the bent portion 55, in the region where the bent portion 55 is formed, is lower than the region where the bent portion 55 is not formed, in the collar 51, the air bag 71 of the pressing cuff 52, the back plate 53, and the sensing cuff 54, through the bending strength. Therefore, the region where the bent portion 55 is provided is more easily bent and deformed than the region where the bent portion 55 is not provided, and becomes the base point of the wrinkles generated in the air bag 71 of the pressing cuff 52 and the air bag 81 of the sensing cuff 54. Here, when the wrinkles generated in the air bag 71 and the air bag 81 are generated mainly due to the difference in the inner and outer peripheries generated when the air bag 71 is expanded in a bent state, the shape of the wrist 300, etc., the generated wrinkles can be controlled by the bent portion 55. For example, the position where wrinkles are generated can be adjusted by the number, configuration and shape of the bending portion 55, so the number of wrinkles generated in the air bag 71 of the pressing cuff 52 and the air bag 81 of the sensing cuff 54 can be adjusted, and the depth of the wrinkles in each wrinkle can be adjusted by the number of wrinkles.

[0141] In this way, the bending strength of the cuff structure 4 is adjusted by the bending portion 55, so that the air bags 71 and 81 can be wrinkled in the desired number, position and depth. Fig. 22 As shown in FIG. 1 , by staggering the bent portions 55 of each member in the longitudinal direction of each member, the bent portions 55 can be made different from each other, thereby making it possible to finely disperse the wrinkles. Fig.23 That is, even if the cuff structure 4 has different characteristics such as bending strength, desired wrinkles can be generated by adjusting the number, arrangement and shape of the bent portions 55.

[0142] Therefore, even if the air bag 71 and the air bag 81 are formed into a cuff structure with a relatively thick thickness and a side wall concave in a ∑ shape, wrinkles can be controlled. In this way, the cuff structure 4 can prevent the space in the air bag 71 and the air bag 81 from being cut off by wrinkles due to excessive wrinkles, etc., so that the measurement accuracy of the blood pressure measurement device 1 can be stabilized. That is, the blood pressure measurement device 1 can suppress the deviation of wrinkles caused by the state of the cuff structure 4 when it is attached to the wrist 300 and the shape of the wrist 300, and can suppress the deviation of the measurement accuracy of the blood pressure caused by wrinkles.

[0143] In addition, in the blood pressure measurement device 1, preferably, by setting the number, arrangement and shape of the bent portions 55, the cuff structure 4 is intentionally bent greatly at positions with relatively large curvatures such as the boundary (edge) between the fixed portion 61 and the first bent portion 62 and the boundary (edge) between the fixed portion 61 and the second bent portion 63, so that wrinkles are less likely to be generated near the arteries 311 and 312 that are easily affected by the reduction in compression efficiency, thereby dispersing wrinkles. As a result, the cuff structure 4 can reduce the influence of stress concentration and the reduction in compression efficiency.

[0144] The member and position of the bent portion 55, and the number, shape, and arrangement of the bent portion 55 can be arbitrarily selected. Therefore, the cuff structure 4 can control wrinkles by setting the bent portion 55 from the viewpoints of ease of manufacture and cost.

[0145] Furthermore, by setting the air bag 71 and the air bag 81 as a cuff structure with a side wall recessed in a ∑ shape, lateral expansion can be prevented, and thus a higher compression efficiency can be obtained. Furthermore, when the openings 76a and 86a are provided on the intermediate sheet members 76 and the intermediate sheet members 86, when lateral expansion occurs on the air bag 71 and the air bag 81, the lateral expansion can be suppressed by setting the shape of the openings 76a and the openings 86a to be smaller, and further, when lateral expansion does not occur, the openings 76a and the openings 86a can be set to be larger. Furthermore, the size of the openings 76a and the openings 86a can be partially changed according to the size and depth of the wrinkles generated. In this way, the cuff structure 4 can adjust the strength of the intermediate sheet members 76 and the intermediate sheet members 86 by the shape of the openings 76a and the openings 86a, and can set the bending portion 55 formed in each member with a high degree of freedom based on the relationship between the suppression of the generation of lateral expansion and the control of wrinkles when the air bag 71 and the air bag 81 are set as a cuff structure with a side wall recessed in a ∑ shape.

[0146] Next, use Fig.24 The evaluation test results of the blood pressure measurement device 1 of the embodiment are described. As an evaluation test, the blood pressure measurement device 1 of the embodiment and the blood pressure measurement devices (cuff structures) of Comparative Examples 1 and 2 were inflated to evaluate wrinkles generated in the sensing cuff 54.

[0147] It should be noted that in the blood pressure measurement device 1 of the embodiment used for the evaluation test, a plurality of recessed portions 75b as weld lines are provided at equal intervals of 8 mm on the sheet member 75 of the sensing cuff 54 as the bending portion 55, and a plurality of openings 76a are provided on the intermediate sheet member 76 as the bending portion 55. In addition, the sensing cuff 54 is formed of TPU, and the surface is laminated with a cloth material.

[0148] The blood pressure measuring device of Comparative Example 1 adopts the following structure: a plurality of recessed portions 75b as weld lines are provided at equal intervals of 8 mm as the bending portion 55 on the sheet member 75 of the sensing cuff 54, and a plurality of openings 76a as the bending portion 55 are not provided on the intermediate sheet member 76. In addition, in the blood pressure measuring device of Comparative Example 1, no fabric is provided on the surface of the sensing cuff 54, and it is formed of TPU.

[0149] The blood pressure measuring device of Comparative Example 2 has a structure in which a plurality of recessed portions 75b as weld lines are provided at equal intervals of 8 mm as the bending portion 55 on the sheet member 75 of the sensing cuff 54, and a plurality of openings 76a as the bending portion 55 are not provided on the intermediate sheet member 76. In addition, in the blood pressure measuring device of Comparative Example 2, the sensing cuff 54 is formed of TPU, and the surface is laminated with a cloth material.

[0150] like Fig.24 As shown, when the cuff structure 4 of the blood pressure measurement device 1 of the embodiment is expanded, wrinkles generated in the sensing cuff 54 can be uniformly dispersed. Therefore, in the cuff structure 4 of the embodiment, as at least one member, for example, the opening 76a of the intermediate sheet member 76 is provided as the bent portion 55, and as other members, combined with the sheet member 75, wrinkles can be uniformly dispersed.

[0151] In contrast, in the cuff structure of the blood pressure measuring device of Comparative Example 1, since the sensing cuff 54 does not have a cloth laminate, it is softer than the sensing cuff 54 of the cuff structure of the embodiment and Comparative Example 2. In addition, since the intermediate sheet member does not have an opening, the size of the wrinkles varies and cannot be evenly dispersed.

[0152] In addition, in the cuff structure of the blood pressure measurement device of Comparative Example 2, since the cloth laminate is included, the sensing cuff 54 is harder than that of Comparative Example 1, and therefore wrinkles are not generated in some of the plurality of recesses 75b (weld lines).

[0153] As can be seen from the results of such evaluation tests, the blood pressure measurement device 1 of this embodiment can control the occurrence of wrinkles.

[0154] As described above, according to the blood pressure measurement device 1 of this embodiment, the occurrence of wrinkles can be controlled by forming the bent portion 55 including the opening in at least two of the members constituting the cuff structure 4 .

[0155] It should be noted that the present invention is not limited to the above-mentioned embodiment. That is, the cuff structure 4 can be a structure in which at least two components are provided with the bending portion 55, and therefore, the cuff structure 4 can be a structure having one or more air bags and one or more other components included in the air bags or stacked with the air bags. Therefore, for example, the cuff structure 4 can be a structure having only one cuff, and can also be a structure having other cuffs in addition to the pressing cuff 52 and the sensing cuff 54.

[0156] 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, each embodiment 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 structural 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 main purpose. In addition, each embodiment 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 structural elements. For example, in the case where the problem can be solved and the effect can be obtained even if some structural elements are deleted from all the structural elements shown in the embodiment, the structure in which the structural element is deleted can be extracted as an invention.

[0157] Description of Reference Numerals

[0158] 1: Blood pressure measuring device;

[0159] 3: Device body;

[0160] 4: Cuff structure;

[0161] 5: strap;

[0162] 5a: hook and loop fastener;

[0163] 11: Shell;

[0164] 12: Display unit;

[0165] 13: Operation unit;

[0166] 14: Pump;

[0167] 15: Acceleration sensor;

[0168] 16: valve;

[0169] 17: Pressure sensor;

[0170] 18: Battery;

[0171] 19: Ministry of Communications;

[0172] 20: Biosensor;

[0173] 21: Charging circuit unit;

[0174] 22: Memory;

[0175] 23: Processor;

[0176] 24: Fluid circuit;

[0177] 31: contour shell;

[0178] 31a: annulus;

[0179] 32: Windshield;

[0180] 33: back cover;

[0181] 41: button;

[0182] 43: Touch panel;

[0183] 51: clamp ring;

[0184] 51a: decorative piece;

[0185] 51b: concave part;

[0186] 52: Press the cuff;

[0187] 53: back panel;

[0188] 53a: opening;

[0189] 53b: concave part;

[0190] 53c: gap;

[0191] 53d: small piece;

[0192] 54: sensing cuff;

[0193] 55: bending portion;

[0194] 61: fixed part;

[0195] 62: first bending portion;

[0196] 63: second curved portion;

[0197] 71: air bag;

[0198] 71a: main wall;

[0199] 71b: side wall;

[0200] 75: Sheet member;

[0201] 75a: opening;

[0202] 75b: concave part;

[0203] 76: intermediate sheet member;

[0204] 76a: Opening;

[0205] 81: air bag;

[0206] 81a: main wall;

[0207] 81b: side wall;

[0208] 82: Flow path body;

[0209] 85: Sheet member;

[0210] 85b: concave part;

[0211] 86: intermediate sheet member;

[0212] 86a: Opening;

[0213] 100: power transmission device;

[0214] 101: Power supply;

[0215] 102: Power transmission department;

[0216] 103: antenna unit;

[0217] 211: antenna unit;

[0218] 212: Receiving department;

[0219] 213: Charging unit;

[0220] 300: wrist;

[0221] 311: radial artery;

[0222] 312: Ulnar artery.

Claims

1. A cuff structure, the cuff structure being used in a blood pressure measurement device, the cuff structure comprising: one or more air pockets inflated by a fluid; and One or more components are included in the air bag or are stacked on the air bag; At least two of the air bag and the one or more members are provided with bending portions, one of the bending portions is formed by an opening or a partition, and the other is formed by an opening, a partition, a notch, a recess, or a groove.

2. The cuff structure according to claim 1, comprising: A collar as the component, the collar is bent to imitate the circumferential shape of the wearing part of the biological body; A pressing cuff is fixed to the inner circumference of the collar, including the air bag; A back plate as the component, fixed to the inner circumference of the pressing cuff; and The sensing cuff is fixed to the inner peripheral surface of the back plate and includes the air bag.

3. The cuff structure according to claim 2, wherein: The air bag includes an intermediate sheet member, The folded portion formed in the air bag is one or more openings formed in the intermediate sheet member and / or a recessed portion formed on the surface of the air bag.

4. The cuff structure according to claim 2, wherein: The bending portion formed on the back plate is an opening, a partition, a notch or a groove formed on the back plate.

5. The cuff structure according to claim 2, wherein: The collar, the compression cuff, the back plate and the sensing cuff are formed long in one direction. A plurality of the bending portions provided on at least two of the collar, the pressing cuff, the back plate, and the sensing cuff are arranged in the one direction.

6. The cuff structure according to claim 5, wherein: The bending portions provided on at least two of the clamping ring, the compression cuff, the back plate and the sensing cuff are configured to at least partially overlap with the bending portions adjacent to the stacking direction and / or be offset in one direction from the bending portions adjacent to the stacking direction.

7. A blood pressure measurement device, comprising: The cuff structure according to any one of claims 1 to 6; a device body fixed to the cuff structure; and The binding belt is provided on the device body and fixes the cuff structure.

Images