blood pressure measuring device

Abstract

To provide a blood pressure measuring device capable of dividing a watch body for displaying time and a blood pressure value, and a pressure measuring part for measuring pressure for blood pressure measurement.SOLUTION: A blood pressure measuring device 1 includes: a watch body 2 having a first display part 12 for displaying information including time and a blood pressure value, which is disposed on the back side of the wrist 200; a band equipped with a pressure measuring part 3 having a pump and a pressure sensor for detecting pressure, and band parts 61 and 62 provided at respective target positions in a circumferential direction on the outer peripheral surface of the pressure measuring part 3, which are connected to the watch body 2 and extending from the pressure measuring part 3, for fixing the watch body 2 to the wrist 200; a cuff structure 6 connected fluidically to the pump in which the pressure is detected by the pressure sensor; and a first control part disposed in the watch body 2 or the pressure measuring part 3 for calculating a blood pressure value on the basis of a result of the detection by the pressure sensor 36.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] In recent years, blood pressure measuring devices have been used to measure blood pressure not only in medical facilities but also at home as a means of checking health conditions. Blood pressure measuring devices measure blood pressure by detecting vibrations of arterial walls, for example, by inflating and deflating a cuff wrapped around the upper arm or wrist of a living body and detecting the pressure of the cuff with a pressure sensor.

[0003] One known blood pressure measurement device is an integrated type in which the cuff and the device main body that supplies fluid to the cuff are integrated. This type of blood pressure measurement device includes a device main body that incorporates a blood pressure measurement pump and a pressure sensor and is placed on the back of the hand when worn on the wrist, a band that secures the blood pressure measurement device to the wrist, a pressure cuff that is placed on the inner periphery of the band and extends circumferentially around the wrist, and a sensing cuff that is placed on the inner periphery of the pressure cuff in an area where the wrist arteries are located. The pressure cuff and the sensing cuff compress the wrist, and blood pressure is measured based on the pressure of the pressure-transmitting fluid contained in the sensing cuff (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-118418 Summary of the Invention [Problem to be solved by the invention]

[0005] The blood pressure measuring device described in Patent Document 1 has a device main body placed on the back of the hand, and by incorporating a function to display the time into the device main body, it is suitable for use as a wristwatch that can be worn at all times. However, because the cuff needs to be fluidly connected to the device main body placed on the back of the hand, the structure becomes complicated and the manufacturing load becomes large.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a blood pressure measurement device in which the configuration for performing the function of displaying information and the configuration for performing the function of measuring blood pressure values are separated. [Means for solving the problem]

[0007] According to one aspect, there is provided a blood pressure measurement device worn on a user's wrist, the blood pressure measurement device comprising: a watch body placed on the back of the wrist and having a display unit and a first communication unit that display information including the time and blood pressure values; a second communication unit that communicates with the first communication unit; a pump; and a pressure measurement unit having a sensor that detects pressure; a band provided on the pressure measurement unit and having a band unit connected to the watch body; a cuff provided on the band and fluidly connected to the pump and the sensor; and a control unit provided on the watch body or the pressure measurement unit that calculates blood pressure values based on the detection results of the sensor.

[0008] Here, the cuff is inflated by supplying a fluid, and includes a bag-like structure such as an air bag.

[0009] According to this aspect, by configuring the blood pressure measurement device to include a watch body and a band that includes a pressure measurement unit and is connected to the watch body, it is possible to separate the configuration for performing the function of displaying information from the configuration for performing the function of measuring blood pressure values.

[0010] In the blood pressure measurement device of the above-mentioned one aspect, the cuff includes a sensing cuff that is placed in the area where the wrist artery is located, and the sensing cuff is arranged on the wrist side of the pressure measurement unit.

[0011] According to this aspect, by using the pressure measurement portion as a marker, the sensing cuff can be easily positioned in the area of the wrist where the arteries are present.

[0012] In the blood pressure measurement device according to the above aspect, the band is detachably attached to the watch body.

[0013] According to this aspect, it is possible to attach the pressure measurement unit to different timepiece bodies.

[0014] In the blood pressure measurement device according to the above aspect, the band portion is configured so that the length between the pressure measurement portion and the watch body is adjustable.

[0015] According to this aspect, by adjusting the length of the band, it is possible to position the watch body on the back of the wrist and the pressure measurement unit on the palm side of the wrist according to the circumference of the user's wrist. to In addition, the band can be tightened appropriately, improving the accuracy of blood pressure measurement.

[0016] In the blood pressure measurement device according to the above aspect, the control unit is provided in the watch body.

[0017] According to this aspect, the pressure measurement unit does not need to have a function for calculating blood pressure values, so the pressure measurement unit can be made smaller.

[0018] In the blood pressure measurement device according to the above aspect, the pressure measurement unit may include a pressure measurement unit display unit that displays a blood pressure value.

[0019] According to this aspect, the blood pressure value can be visually confirmed by the pressure measuring unit.

[0020] In the blood pressure measurement device of the above aspect, the timepiece body or the pressure measurement unit may include an operation unit into which an operation to start blood pressure measurement is input.

[0021] According to this aspect, the operability of the operation unit can be improved. [Effects of the Invention]

[0022] The present invention can provide a blood pressure measurement device in which the timepiece body that displays information including the time and blood pressure value, and the pressure measurement unit that measures the pressure for blood pressure measurement are separated. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is an explanatory diagram showing the configuration of a blood pressure measurement device according to an embodiment of the present invention in a state where the device is worn on the wrist. [Figure 2] FIG. 2 is a side view showing a state in which the band and pressure measurement unit used in the blood pressure measurement device are separated from the watch body used in the blood pressure measurement device. [Figure 3] FIG. 2 is a block diagram showing the configuration of the blood pressure measurement device. [Figure 4] FIG. 2 is a plan view showing the configuration of a cuff structure used in the blood pressure measurement device. [Figure 5] FIG. 10 is a plan view showing the configuration of the pressure measurement unit and the band as viewed from the side opposite to the wrist. [Figure 6] FIG. 2 is an explanatory diagram showing the blood pressure measuring device attached to the wrist. [Figure 7] 4 is a flowchart showing an example of the operation of the blood pressure measuring device. [Figure 8] FIG. 10 is a side view showing the configuration of a modified example of the blood pressure measuring device. [Figure 9] FIG. 2 is a block diagram showing the configuration of the blood pressure measurement device. [Figure 10] FIG. 2 is a plan view showing the pressure measurement unit and the band used in the blood pressure measurement device as viewed from the side opposite to the wrist side. [Figure 11] FIG. 10 is a side view showing the configuration of a blood pressure measurement device according to a modified example of the present invention. [Figure 12] FIG. 2 is a block diagram showing the configuration of the blood pressure measurement device. [Figure 13] FIG. 2 is a plan view showing the pressure measurement unit and the band used in the blood pressure measurement device as viewed from the side opposite to the wrist side. [Figure 14] FIG. 10 is a plan view showing the configuration of a cuff structure according to a modified example of the present invention as viewed from the wrist side. [Figure 15] FIG. 10 is a side view showing the configuration of a blood pressure measurement device according to a modified example of the present invention. [Figure 16] FIG. 10 is a side view showing the configuration of a blood pressure measurement device according to a modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] An example of a blood pressure measurement device 1 according to one embodiment of the present invention will be illustrated below with reference to FIGS. 1 to 7. FIG. FIG. 1 is an explanatory diagram showing the configuration of a blood pressure measurement device 1 worn on a wrist 200. FIG. 2 is a side view showing a state in which a band 4 and a pressure measurement unit 3 used in the blood pressure measurement device 1 are separated from a watch body 2 used in the blood pressure measurement device 1. FIG. 3 is a block diagram showing the configuration of the blood pressure measurement device 1. FIG. 4 is a plan view showing the configuration of a cuff structure 6 used in the blood pressure measurement device 1 as viewed from the wrist 200 side. FIG. 6 shows the cuff structure 6 separated from the curler 5.

[0025] Fig. 5 is a plan view showing the configuration of the pressure measurement unit 3 and the band 4 as viewed from the side opposite to the wrist 200. Fig. 6 is an explanatory diagram showing the blood pressure measurement device 1 worn on the wrist 200. Fig. 7 is a flowchart showing an example of the operation of the blood pressure measurement device 1.

[0026] The blood pressure measurement device 1 is an electronic blood pressure measurement device that is attached to a living body. In this embodiment, an electronic blood pressure measurement device in the form of a wearable device that is attached to a wrist 200 of a living body will be used for explanation.

[0027] As shown in Figures 1 to 3, the blood pressure measurement device 1 includes a watch body 2, a band 4 that includes a pressure measurement unit 3 and secures the watch body 2 to a wrist 200, a curler 5 that is positioned between the band 4 and the wrist 200, and a cuff structure 6 that has a pressure cuff 71 and a sensing cuff 73.

[0028] The blood pressure measurement device 1 measures the arterial pressure of the user, calculates the blood pressure value from the measured pressure, and blood pressure The blood pressure measurement device 1 is configured to be capable of displaying information including blood pressure values and times. Furthermore, the watch body 2 of the blood pressure measurement device 1 has a function of displaying information including blood pressure values and times, and a pressure measurement unit 3 (described later) of the band 4 has a function of measuring pressure. Furthermore, the watch body 2 or the pressure measurement unit 3 has a function of calculating blood pressure values based on blood pressure measurement signals. In this embodiment, as an example, the watch body 2 has a function of calculating blood pressure values.

[0029] The watch body 2 is placed on the back of the wrist 200. The watch body 2 is configured to be able to display the time and the user's blood pressure value. The watch body 2 is also configured to allow, for example, the user to input an operation to start blood pressure measurement, and to be able to send a command to start blood pressure measurement to the pressure measurement unit 3. The watch body 2 is also configured to be able to calculate the blood pressure value from a blood pressure measurement signal, which is information required for blood pressure calculation, received from the pressure measurement unit 3.

[0030] The watch body 2 includes, for example, a first case 11, a first display unit 12, an operation unit 13, a memory 14, a first communication unit 15, a first battery 16, and a first control unit (Central Processing Unit) 17.

[0031] The first case 11 includes, for example, a cylindrical outer case 21 that is open on the side opposite to the wrist 200 side, and a windshield 22 that covers the opening of the outer case 21 on the side opposite to the wrist 200 side.

[0032] The outer case 21 is provided with a pair of lugs 23 that are provided at symmetrical positions in the circumferential direction on the outer peripheral surface.

[0033] Between one pair of lugs 23, for example, a spring bar 24 is provided, to which the band 4 is connected. The spring bar 24 is an example of a connected part to which the band 4 is connected. The other pair of lugs 23 is provided with a shaft 25 that folds back the band 4 wrapped around the wrist 200. The shaft 25 is, for example, rod-shaped. The shaft 25 is, for example, a spring bar. The shaft 25 is, for example, provided parallel to a direction perpendicular to the direction from the watch body 2 toward the wrist 200.

[0034] The windshield 22 is, for example, a glass plate.

[0035] The first display unit 12 is electrically connected to the first control unit 17. The first display unit 12 is configured to be able to display the date and time, including the time of day. The first display unit 12 also displays various information, including measurement results such as blood pressure values, such as systolic blood pressure and diastolic blood pressure, and heart rate. The first display unit 12 is disposed in a position facing the windshield 22. The first display unit 12 is electrically connected to the first control unit 17. The first display unit 12 is, for example, a liquid crystal display or an organic electroluminescence display.

[0036] The operation unit 13 is configured to allow a user to input commands. For example, as shown in FIG. 1, the operation unit 13 includes a plurality of buttons 13a provided on the first case 11 and a sensor 13b that detects the operation of the buttons 13a. For example, three buttons 13a are provided. The sensor 13b is electrically connected to the first control unit 17. The sensor 13b transmits the detection result to the first control unit 17.

[0037] Memory 14 is electrically connected to first control unit 17. Memory 14 stores, for example, various programs for operating watch body 2 and a program for calculating blood pressure values. Memory 14 also stores blood pressure values calculated by first control unit 17.

[0038] The first communication unit 15 is electrically connected to the first control unit 17. The first communication unit 15 is configured to be able to communicate wirelessly with the pressure measurement unit 3. The first communication unit 15 uses, for example, Bluetooth (registered trademark).

[0039] The first battery 16 is electrically connected to the first control unit 17. The first battery 16 supplies each component of the timepiece body 2 with the power necessary for its operation.

[0040] The first control unit 17 is composed of one or more CPUs, and controls the overall operation of the watch body 2 and calculates blood pressure values. The first control unit 17 is electrically connected to the first display unit 12, the sensor 13b of the operation unit 13, the memory 14, the first communication unit 15, and the first battery 16. The first control unit 17 controls the first display unit 12. The first control unit 17 also transmits a command to start blood pressure measurement from the first communication unit 15 to the pressure measurement unit 3 based on an operation input to the operation unit 13. The first control unit 17 also calculates blood pressure values based on a blood pressure measurement signal transmitted from the pressure measurement unit 3. The first control unit 17 then outputs the calculated blood pressure. value is stored in the memory 14.

[0041] 1, 2, and 5, the band 4 includes a pressure measurement unit 3 and a band unit 60. The band 4 is configured to be detachable from the watch body 2. The watch body 2 is positioned midway along the length of the band 4, and with the watch body 2 positioned on the back of the wrist 200, a sensing cuff 73 used for pressure measurement can be positioned in the area of the wrist 200 where the arteries are located.

[0042] The band part 60 is provided integrally with the pressure measurement part 3, or provided separately from the pressure measurement part 3 and connected to the pressure measurement part 3, or a part is provided integrally with the pressure measurement part 3 and another part is provided separately from the pressure measurement part 3 and connected to the pressure measurement part 3. In this embodiment, as an example, a configuration will be described in which the band part 60 is provided separately from the pressure measurement part 3 and is used by being connected to the pressure measurement part 3.

[0043] The band portion 60 has, for example, a first band portion 61 and a second band portion 62. The first band portion 61 and the second band portion 62 are provided at symmetrical positions in the circumferential direction of a second case 31 (described later) of the pressure measurement unit 3, and are each connected to the watch body 2. The band 4 is configured in a ring shape together with the watch body 2 and the pressure measurement unit 3, for example, with the first band portion 61 being provided on one pair of lugs 23 and spring bar 24 of the outer case 21 of the watch body 2, and the second band portion 62 being folded back at a shaft portion 25 provided between the other pair of lugs 23.

[0044] The pressure measurement unit 3 includes, for example, a second case 31, a pump 32, a fluid path 33 fluidly connecting the pump 32 and the cuff structure 6, a valve 34, a pump drive circuit 35, a pressure sensor 36, a second communication unit 37, a second display unit 38, a second battery 39, and a second control unit 40.

[0045] In this embodiment, for example, the pump 32, the fluid path 33, the valve 34, the pump drive circuit 35, the pressure sensor 36, the second communication unit 37, the second display unit 38, the second battery 39, and the second control unit 40 are an example of a configuration for measuring pressure.

[0046] The second case 31 includes an outer case 31a having an opening on the surface opposite to the wrist 200 side, and a cover 31b that covers the opening of the outer case 31a. The second case 31 is configured to be connectable to the band 4. The cover 31b is made of a transparent material that allows the second display unit 38 to be seen.

[0047] The pump 32 supplies compressed air to the cuff structure 6 via a fluid path 33 .

[0048] The fluid path 33 is connected to the pump 32 and the cuff structure 6 .

[0049] The valve 34 is electrically connected to the second control unit 40. The valve 34 is provided in the fluid path 33. When the valve 34 is closed, the fluid path 33 is sealed, and when the valve 34 is opened, the fluid path 33 is opened to the atmosphere.

[0050] The pump drive circuit 35 is electrically connected to the second control unit 40. The pump drive circuit 35 drives the pump 32 under the control of the second control unit 40.

[0051] The pressure sensor 36 is electrically connected to the second control unit 40. The pressure sensor 36 detects the pressure of the sensing cuff 73. The pressure sensor 36 transmits the detection result to the second control unit 40.

[0052] The second communication unit 37 is electrically connected to the second control unit 40. The second communication unit 37 communicates with the first communication unit 15 of the timepiece body 2.

[0053] The second display unit 38 is electrically connected to the second control unit 40. The second display unit 38 is disposed opposite the cover 31b. The second display unit 38 is, for example, a liquid crystal display or an organic electroluminescence display. The second display unit 38 displays the blood pressure value.

[0054] The second battery 39 is electrically connected to the second control unit 40. The second battery 39 supplies power to each component of the pressure measurement unit 3.

[0055] The second control unit 40 is an example of a control unit used in the pressure measurement unit 3. The second control unit 40 controls the valve 34, the pump drive circuit 35, the second communication unit 37, and the second display unit 38.

[0056] The first band portion 61 is formed in a shape that is long in one direction. In this embodiment, the first band portion 61 is detachably attached to the spring bar 24. An attachment portion 61a that is detachable from the spring bar 24 is provided at an end of the first band portion 61.

[0057] The mounting portion 61a has, for example, an opening, and the spring bar 24 is mounted by being placed inside the opening.

[0058] The first band portion 61 is configured, for example, to have an adjustable length. The first band portion 61 has, for example, a plurality of links 61b. The plurality of links 61b are arranged in a line in one direction. The plurality of links 61b are connected so as to be able to bend in accordance with the circumferential direction of the user's wrist 200. The plurality of links 61b are also configured to be detachable. The length of the first band portion 61 can be adjusted by adjusting the number of links 61b. The second band portion 62 is formed from a material, such as cloth, that can be bent to fit the wrist 200. The second band portion 62 is provided with a fastening portion 63 that detachably fastens the portion folded back at the shaft portion 25 to the other portion of the second band portion 62. The fastening portion 63 is, for example, a hook-and-loop fastener.

[0059] The fixing portion 63 includes, for example, a hook portion 64 with multiple hooks provided on one end side of the second band portion 62, and a loop portion 65 with multiple loops provided on the pressure measurement unit 3 side of the hook portion 64. As an example, the second band portion 62 is detachably attached to the watch body 2 by fixing the hook portion 64 folded back at the shaft portion 25 to the loop portion 65.

[0060] In the above example, the hook portion 64 and the loop portion 65 of the fixing portion 63 are respectively configured in different regions on the surface of the second band portion 62, but this is not limiting. In another example, the fixing portion 63 may be configured such that multiple hooks and multiple loops are mixed and provided in the same predetermined region.

[0061] By adjusting the length of the first band portion 61 of the band 4 configured in this manner, the blood pressure measurement device 1 can be fixed to the wrist 200 in a position where the watch body 2 is placed on the back of the wrist 200 and the sensing cuff 73 of the cuff structure 6, which will be described later, is placed in the area of the wrist 200 where the artery 210 is located.

[0062] 1 and 2, curler 5 is configured in a band shape that curves following the circumferential direction of wrist 200. Curler 5 is formed with one end and the other end spaced apart. For example, the outer surface of the central portion of curler 5 along the circumferential direction is fixed to second case 31 of pressure measurement unit 3. Curler 5 is arranged, for example, with one end and the other end facing pressure measurement unit 3.

[0063] The cuff structure 6 is fixed to the inner circumferential surface of the curler 5. The cuff structure 6 has at least a length that faces the artery 210. As shown in FIGS. 1, 2 and 4, the cuff structure 6 includes, for example, a pressure cuff 71, a back plate 72, and a sensing cuff 73. In the cuff structure 6, a back plate 72 is disposed on a pressure cuff 71, and a sensing cuff 73 is disposed on the back plate 72. In the cuff structure 6, adjacent components are fixed to each other by, for example, a bonding layer. The bonding layer is formed of, for example, an adhesive or double-sided tape.

[0064] The pressure cuff 71 is connected to the fluid path 33 of the pressure measurement unit 3. By being connected to the fluid path 33, the pressure cuff 71 is fluidly connected to the pump 32. The pressure cuff 71 is configured in a strip shape extending in one direction. The pressure cuff 71 extends, for example, from one end to the other end of the curler 5.

[0065] 4, pressure cuff 71 includes air bag 81 and a connection part 84 connected to fluid path 33 of pressure measurement unit 3. Here, air bag 81 is a bag-like structure, and in this embodiment, because blood pressure measurement device 1 is configured to use air via pump 32, an air bag will be used for the description, but if a fluid other than air is used, the bag-like structure may be a fluid bag that is inflated by the fluid.

[0066] Connection portion 84 is provided on the surface of air bag 81 facing curler 5. Connection portion 84 is configured to be connectable to fluid path 33 via curler 5.

[0067] As shown in Fig. 4, back plate 72 is formed in the shape of a plate that is long in one direction. Back plate 72 is fixed to the outer surface of pressure cuff 71 on the wrist 200 side. Back plate 72 is formed, for example, to a length that covers the palm side of wrist 200. Back plate 72 transmits the pressure force from pressure cuff 71 to the main surface of sensing cuff 73 on the back plate 72 side, while conforming to the shape of wrist 200.

[0068] The back plate 72 has shape-conforming properties. Here, shape-conforming properties refer to the ability of the back plate 72 to deform so as to follow the shape of the contacted portion of the wrist 200 on which it is placed, and the contacted portion of the wrist 200 refers to the region of the wrist 200 that the back plate 72 faces. Here, contact includes both direct contact and indirect contact via the sensing cuff 73. For example, as shown in FIG. 4 , the back plate 72 has a plurality of grooves 72a on both main surfaces of the back plate 72 that extend in a direction perpendicular to the longitudinal direction of the back plate 72.

[0069] The sensing cuff 73 is fixed to the surface of the backboard 72 on the wrist 200 side. The longitudinal length of the sensing cuff 73 is set to a length that makes contact with an area where at least one of the radial artery 211 and the ulnar artery 212, which are arteries 210 of the wrist 200, is present.

[0070] The sensing cuff 73 is formed, for example, in the longitudinal and width directions of the back plate 72 to have the same shape as the back plate 72 or a shape smaller than the back plate 72. The inflated pressure cuff 71 presses the sensing cuff 73 toward the wrist 200 via the back plate 72.

[0071] The sensing cuff 73 is fluidly connected to the pressure cuff 71 via a restriction, for example. The restriction 94 is, for example, an orifice.

[0072] As shown in Fig. 4, the sensing cuff 73 includes, for example, one air bag 91 and a connection part 93. Here, the air bag 91 is a bag-like structure. In this embodiment, the blood pressure measurement device 1 is configured to use air via a pump, so the description will be given using an air bag. However, if a fluid other than air is used, the bag-like structure may be a fluid bag that is inflated by the fluid. The connection part 93 is fluidly connected to the pressure cuff 71. For example, a throttle 94 is provided in the connection part 93 or in a flow path connecting the connection part 93 and the air bag 81 of the pressure cuff 71.

[0073] In the blood pressure measurement device 1 configured in this manner, the length of the first band portion 61 is adjusted so that the watch body 2 is placed on the back of the wrist 200 and the sensing cuff 73 is placed in the area of the wrist 200 where the arteries are located.

[0074] Next, a description will be given of an example in which the user wears the blood pressure measurement device 1 on the wrist 200. FIG.

[0075] First, the user releases the second band part 62 from the fixing part 63, and adjusts the size of the annular space formed by the watch body 2, pressure measurement part 3, and band 4 to a size that allows the wrist 200 to be inserted.

[0076] Next, the user inserts the wrist 200 into the annular space formed by the watch body 2, the pressure measurement unit 3, and the band 4, as shown in FIG.

[0077] Next, the user adjusts the position of the blood pressure measurement device 1 so that the watch body 2 is located on the back side of the wrist 200 and the pressure measurement unit 3 is located on the palm side of the wrist 200.

[0078] Next, the user pulls the second band portion 62 to press the sensing cuff 73 against the area of the wrist 200 where the artery is located, and fixes the hook portion 64 to the loop portion 65. By this procedure, the blood pressure measurement device 1 is attached to the wrist 200.

[0079] Next, a description will be given of an example of the operation of the blood pressure measurement device 1. Fig. 7 is a flowchart showing an example of the operation. The user operates the button 13a of the operation unit 13 to input a command corresponding to the start of blood pressure measurement (step S1).

[0080] When the first control unit 17 determines, based on the detection result of the sensor 13b of the operation unit 13, that a command corresponding to the start of blood pressure measurement has been input, it initializes the processing area of the memory 14 and transmits a command to start blood pressure measurement to the second communication unit 37 of the pressure measurement unit 3 via the first communication unit 15 (step S2).

[0081] When second control unit 40 of pressure measurement unit 3 receives a command to start blood pressure measurement via second communication unit 37, second control unit 40 stops pump 32 via pump drive circuit 35 and opens valve 34 to exhaust air from pressure cuff 71. Next, second control unit 40 drives pump 32 via pump drive circuit 35 and closes valve 34 to start pressurizing pressure cuff 71 (step S3).

[0082] A portion of the compressed air supplied to pressure cuff 71 is supplied to sensing cuff 73 via restrictor 94. Second control unit 40 controls pump 32 based on the detection result of pressure sensor 36 to control the compressed air supplied to pressure cuff 71, thereby gradually inflating pressure cuff 71 and sensing cuff 73.

[0083] During the pressurization process, the second control unit 40 transmits the detection result of the pressure sensor 36 to the first communication unit 15 of the watch body 2 via the second communication unit 37.

[0084] When first control unit 17 receives the detection result of pressure sensor 36 via first communication unit 15, it calculates the blood pressure value (step S4). Furthermore, first control unit 17 acquires a pulse wave signal from the detection result of pressure sensor 36.

[0085] First control unit 17 determines whether or not the blood pressure value can be determined (step S5). The blood pressure value cannot be determined when the pressure in sensing cuff 73 does not reach the upper limit for blood pressure measurement.

[0086] If the first controller 17 cannot determine the blood pressure value due to insufficient data, that is, if the pressure in the sensing cuff 73 has not reached the upper limit (NO in step S5), it repeats steps S3 to S5.

[0087] When the first control unit 17 can determine the pressure value (YES in step S5), it transmits a command to stop the pump 32 to the second communication unit 37 via the first communication unit 15. When the second control unit 40 receives the command to stop the pump 32 via the second communication unit 37, it stops driving the pump 32, opens the valve 34, and evacuates the sensing cuff 73 and the pressure cuff 71 (step S6). In addition, the second control unit 40 transmits a message that the driving of the pump 32 has been stopped to the first communication unit 15 via the second communication unit 37.

[0088] Next, first control unit 17 transmits the blood pressure value to second communication unit 37 via first communication unit 15 and displays it on first display unit 12 (step S7). When second control unit 40 receives the blood pressure value via second communication unit 37, it displays it on second display unit 38 (step S8).

[0089] The blood pressure measurement device 1 configured in this manner includes the watch body 2 and the band 4 including the pressure measurement unit 3, making it possible to separate the configuration for displaying information including the time and blood pressure value from the configuration for measuring blood pressure. Furthermore, the watch body 2 includes a first communication unit 15, and the pressure measurement unit 3 includes a second communication unit 37, with the communication units 15 and 37 being able to communicate with each other wirelessly. This eliminates the need for communication wiring between the watch body 2 and the pressure measurement unit 3.

[0090] Furthermore, by dividing the functions of the blood pressure measurement device 1 into the watch body 2 and the pressure measurement unit 3, the pump 32 and pressure sensor 36 do not need to be housed in the watch body 2, which makes it possible to prevent the watch body 2 from becoming larger.

[0091] Furthermore, since the distance from the pump 32 to the cuff structure 6 can be shortened, the cuff structure 6 can be inflated efficiently.

[0092] Furthermore, since the sensing cuff 73 is fixed to the wrist 200 side of the pressure measurement unit 3, by placing the pressure measurement unit 3 on the palm side of the wrist 200, it becomes possible to place the sensing cuff 73 in the area where the arteries of the wrist 200 are present. In other words, by using the pressure measurement unit 3 as a landmark, it becomes possible to easily place the sensing cuff 73 in the area where the arteries of the wrist 200 are present.

[0093] Furthermore, since the band 4 is configured to be detachably attached to the watch body 2, the band 4 can be attached to a variety of watch bodies 2.

[0094] Furthermore, the first band part 61 is configured to have an adjustable length. Therefore, by adjusting the length of the first band part 61, it is possible to position the watch body 2 on the back side of the wrist 200 and the pressure measurement part 3 on the palm side of the wrist 200 according to the circumference of the user's wrist 200.

[0095] Furthermore, the second band part 62 is adjustable in length between the pressure measurement part 3 of the second band part 62 and the watch body 2. Therefore, by adjusting the length between the pressure measurement part 3 of the second band part 62 and the watch body 2, the circumference of the wrist 200 can be adjusted. to In addition, the band 4 can be tightened appropriately, improving the accuracy of blood pressure measurement.

[0096] Furthermore, the watch body 2 is equipped with a first battery 16, and the pressure measurement unit 3 is equipped with a second battery 39. Therefore, there is no need to install wiring for power supply outside the watch body 2 and the blood pressure measurement device.

[0097] Furthermore, by using the first control unit 17 of the watch body 2 as a control unit that calculates the blood pressure value, the function of the second control unit 40 of the pressure measurement unit 3 can be kept small. That Therefore, the second control unit 40 can be made smaller, and the pressure measurement unit 3 can be made smaller.

[0098] Furthermore, by providing the pressure measurement unit 3 with the second display unit 38, it becomes possible to visually confirm the blood pressure value on the pressure measurement unit 3 as well.

[0099] Furthermore, the watch body 2 is configured to include an operation unit 13 through which the operation to start blood pressure measurement is input, thereby enabling the pressure measurement unit 3 to be made smaller. 。 As described above, the blood pressure measurement device 1 according to this embodiment can separate the timepiece body 2 that displays information including the time and blood pressure value from the pressure measurement unit 3 that measures pressure.

[0100] In the above example, the pressure measuring unit 3 has one second case 31, and the second case 31 contains a pump 32, a fluid path 33, a pump drive circuit 35, a pressure sensor 36, a second communication unit 37, a second display unit 38, a second battery 39, and a second control unit 40, but this is not limited to this.

[0101] In another example, the pressure measurement unit 3 may have multiple cases, and the pump 32, fluid path 33, pump drive circuit 35, pressure sensor 36, second communication unit 37, second display unit 38, second battery 39, and second control unit 40 may be housed in multiple second cases 31 in a distributed manner.

[0102] As an example, as shown in Figures 8 to 10, the pressure measurement unit 3 may be configured to include two cases. Figure 8 is a side view showing the configuration of a blood pressure measurement device 1 according to this modification, with the pressure measurement unit 3 and band 4 separated from the watch body 2. Figure 9 is a block diagram showing the configuration of a blood pressure measurement device 1 according to this modification. Figure 10 is a plan view showing the configuration of the pressure measurement unit 3 and band 4 used in the blood pressure measurement device 1 according to this modification, as viewed from the side opposite to the wrist 200 side.

[0103] 8 to 10, in this modification, the pressure measurement unit 3 includes two cases, that is, a second case 31 and a sub-case 101. The second case 31 houses, for example, a pump 32, a fluid path 33, a pressure sensor 36, and a second display unit 38. The sub-case 101 houses, for example, a pump drive circuit 35, a second communication unit 37, a second battery 39, and a second control unit 40.

[0104] In another example, the pressure measurement unit 3 may be configured to include three cases, as in the modified examples shown in Figures 11 to 13. Figure 11 is a side view showing the configuration of a blood pressure measurement device 1 according to this modified example, with the pressure measurement unit 3 and band 4 separated from the watch body 2. Figure 12 is a block diagram showing the configuration of a blood pressure measurement device 1 according to this modified example. Figure 13 is a plan view showing the configuration of the pressure measurement unit 3 and band 4 used in the blood pressure measurement device 1 according to this modified example, as viewed from the side opposite to the wrist 200 side.

[0105] 11 to 13, in this modification, the pressure measurement unit 3 includes three cases: a sub-case 101 and a sub-case 102 in addition to a second case 31. The second case 31 houses, for example, a pump 32, a fluid path 33, a pressure sensor 36, and a second display unit 38. The sub-case 101 houses, for example, a pump drive circuit 35, a second communication unit 37, and a second control unit 40. The sub-case 102 houses a second battery 39.

[0106] In the above example, the sensing cuff 73 is fluidly connected via the pressure cuff 71, but this is not limiting. In another example, as shown in FIG. 14 , the sensing cuff 73 may be directly connected to the fluid path 33. In this configuration, the connection portion 93 is connected to the fluid path 33.

[0107] In the above example, the blood pressure measurement device 1 has been described as having a configuration in which the watch body 2 is equipped with the first control unit 17 and memory 14, which are components necessary for calculating blood pressure based on the detection results of the pressure sensor 36, but is not limited to this.

[0108] In another example, the watch body 2 may be configured to be able to calculate blood pressure based on the detection results of the pressure sensor 36. For example, the watch body 2 may be provided with a memory necessary to calculate blood pressure based on the detection results of the pressure sensor 36, and this memory and the second control unit 40 may be used to calculate blood pressure. do In this configuration, the blood pressure value may be calculated by the pressure measurement unit 3, transmitted to the watch body 2, and displayed on the first display unit 12. In this configuration, the watch body 2 does not need to have the function of calculating blood pressure based on the detection result of the pressure sensor 36, but only needs to have the function of receiving and displaying blood pressure value information from the outside, making it possible to use a variety of watch bodies 2.

[0109] In the above example, the first band portion 61 is described as having a plurality of links 61b as a length-adjustable configuration, but is not limited to this. In another example, as shown in Fig. 15, the shaft portion 25 may be provided between a pair of lugs 23 of the second case 31 of the watch body 2, and the length of the first band portion 61 may be adjusted by adjusting the folding position of the shaft portion 25. The first band portion 61 folded back at the shaft portion 25 may be fixed to another portion of the first band portion 61 by a detachable fastening portion 63 such as a hook-and-loop fastener.

[0110] In the above example, the pressure measurement unit 3 and the band 4 are configured separately, and the band 4 is connected to the second case 31 of the pressure measurement unit 3. However, the present invention is not limited to this. In other examples, the second case 31 and the band 4 may be integrated rather than configured separately and connected. Alternatively, a part of the band 4 may be integrated with the second case 31, and another part of the band 4 may be configured separately from the second case 31 and connected to the second case 31. Structure It may be composed of

[0111] Furthermore, the pressure measurement unit 3, the band 4, the curler 5, and the cuff structure 6 may be integrated into one piece, rather than being configured separately and connected to one another.

[0112] In the above example, the operation unit 13 of the watch body 2 is configured to allow input of an operation to start blood pressure measurement, but this is not limiting. In another example, the pressure measurement unit 3 may be configured to include an operation unit that allows input of an operation to start blood pressure measurement.

[0113] In the above example, the pressure measuring unit 3 is described as having the second display unit 38, but is not limited to this. For example, the pressure measuring unit 3 may not have the second display unit 38.

[0114] In the above example, the blood pressure measurement device 1 has been described as including a curler 5, but this is not limiting. In another example, the blood pressure measurement device 1 may not include a curler 5. A blood pressure measurement device 1 according to this modification will be described with reference to FIG. 16. Note that FIG. 16 shows, as an example, a blood pressure measurement device 1 in which the pressure measurement unit 3 includes three cases 31, 101, and 102.

[0115] 16 , when the blood pressure measurement device 1 is configured without the curler 5, for example, the pressure cuff 71 is fixed to the surface of the second case 31 of the pressure measurement unit 3 on the wrist 200 side. Furthermore, when the blood pressure measurement device 1 is configured without the curler 5, it may be provided with a fixing unit 104 for fixing the cuff structure 6 in a state where it is wrapped around the wrist 200 before wrapping the band 4 around the wrist 200. This fixing unit 104 fixes both ends of the pressure cuff 71 wrapped around the wrist 200 to each other, for example. The fixing unit is, for example, a hook-and-loop fastener or a snap fit.

[0116] That is, the present invention is not limited to the above-described embodiments, and various modifications can be made in the implementation stage without departing from the spirit of the invention. Furthermore, the embodiments may be implemented in appropriate combinations where possible, and in such cases, the combined effects can be obtained. Furthermore, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining the disclosed multiple constituent elements. For example, if the problem can be solved and the effects can be obtained even if some constituent elements are deleted from all the constituent elements shown in the embodiments, the configuration from which these constituent elements are deleted can be extracted as an invention. [Explanation of symbols]

[0117] 1...Blood pressure measuring device 2. Watch body 3...Pressure measurement section 4...Band 5. Carla 6...Cuff structure 11...First case 12...First display unit 13...Operation unit 13a...button 13b...Sensor 14...Memory 15...First Communications Department 16...First battery 17...First control section 21...Outer case 22...Windshield 23...Rug 24...Spring bar 25...Shaft 31...Second case 31a...Outer case 31b...Cover 32...Pump 33...Fluid path 34...Valve 35...Pump drive circuit 36...Pressure sensor 37...Second Communications Department 38...Second display unit 39...Second battery 40...Second control section 60...Band 61...First band section 61a...Mounting part 61b...frame 62...Second band section 63…Fixed part 64...Hook part 65...Loop section 71...Compression cuff 72...Backboard 72a...Groove 73...Sensing cuff 81...Air bag 84...Connection 86...Sheet member 91...Air bag 93...Connection 96...Sheet member 101...Subcase 102...Subcase 200...Wrist 210...artery 211...Radial artery 212…ulnar artery

Claims

1. A blood pressure measurement device worn on a user's wrist, a watch body that is placed on the back of the wrist and has a display unit that displays information including the time and blood pressure value, and a first communication unit; a second communication unit that communicates wirelessly with the first communication unit, a pump, a pressure measurement unit that has a sensor that detects pressure, and a band that is provided on the pressure measurement unit and includes a band portion that is connected to the timepiece body; a curler formed in a band shape that curves along the circumferential direction of the wrist and has one end and the other end spaced apart; a cuff provided on an inner circumferential surface of the curler and fluidly connected to the pump and the sensor; a control unit provided in the timepiece body or the pressure measurement unit, which calculates a blood pressure value based on the detection result of the sensor; Equipped with The blood pressure measurement device, wherein the pressure measurement unit is fixed to an outer surface of the curler at a central portion in a circumferential direction.

2. The cuff includes a sensing cuff that is placed in an area of the wrist where an artery is present, The sensing cuff is disposed on the wrist side of the pressure measurement unit. The blood pressure measuring device according to claim 1 .

3. The blood pressure measurement device according to claim 1 , wherein the band is detachably attached to the watch body.

4. The blood pressure measurement device according to claim 3 , wherein the band portion is configured so that the length between the pressure measurement portion and the watch body is adjustable.

5. The blood pressure measurement device according to claim 1 , wherein the control unit is provided in the watch body.

6. The blood pressure measurement device according to claim 1 , wherein the pressure measurement unit includes a pressure measurement unit display unit that displays a blood pressure value.

7. The blood pressure measurement device according to claim 1 , wherein the timepiece body or the pressure measurement unit includes an operation unit into which an operation to start blood pressure measurement is input.

Images