WO2019225585A1

WO2019225585A1 - Blood pressure measurement device

Info

Publication number: WO2019225585A1
Application number: PCT/JP2019/020052
Authority: WO
Inventors: 勝宣近藤
Original assignee: オムロンヘルスケア株式会社
Priority date: 2018-05-24
Filing date: 2019-05-21
Publication date: 2019-11-28
Also published as: JP2019201984A

Abstract

A blood pressure measurement device (1) provided with: a pair of attachment portions (41) which are disposed in a position opposing a region of a wrist (100) in which an artery is present, and each have an end surface curving along the shape of a part in the circumferential direction of the right and left wrists; a fastener (43) that can be attached to and detached from the pair of attachment portions (41); and a sensing body (42) which is mounted to a selected one of the pair of attachment portions (41) and detects the pressure of the artery.

Description

Blood pressure measurement device

The present invention relates to a blood pressure measurement device that measures blood pressure.

In recent years, blood pressure measurement devices used for blood pressure measurement are used not only in medical facilities but also in the home as means for checking the health condition. Such a blood pressure measuring device is, for example, a technique using an oscillometric method or a technique using a tonometry method as disclosed in Japanese Patent Laid-Open No. 01-288228. The blood pressure measuring device using the sway detects, for example, the vibration of the arterial wall by measuring the pressure of the cuff wound around the upper arm or wrist of the living body, and measures the blood pressure.

A blood pressure measurement device using the tonometry method, for example, brings a sensor module including a plurality of pressure sensors into contact with a region of the radial artery of one wrist, for example, the left wrist, and the pressure sensor is a rib that is one artery of the wrist. By detecting the pressure of the artery with a pressure sensor, the blood pressure for each beat can be measured.

Since such a blood pressure measuring device using the tonometry method measures the pressure of the artery with the pressure sensor, if the pressure sensor is placed at a position deviated from the artery, the accuracy of blood pressure measurement is reduced. Positioning is important. For this reason, there is also known a blood pressure measuring device having a shape in which the shape in contact with the left wrist follows the shape in the circumferential direction of the region where the radial artery in the left wrist exists so that the pressure of the radial artery in the left wrist can be reliably measured. Yes.

Japanese Unexamined Patent Publication No. 01-288228

However, the radial artery on the wrist of the left arm may not be preferable for blood pressure measurement because the structures of the radial artery, tendon, and rib are different depending on the person. Similarly, blood pressure measurement may not be possible when the left wrist is injured. Further, when the dominant arm is the left arm, if blood pressure is measured with the wrist on the dominant arm side, there is a possibility that the activity may be limited.

For this reason, it may be possible to wear a blood pressure measuring device on the right wrist. However, if a blood pressure measuring device shaped like the circumferential shape of the area where the radial artery of the left wrist exists is attached to the right wrist, the pressure sensor does not properly contact the area where the radial artery of the right wrist exists, and blood pressure measurement There is a risk that the accuracy may decrease.

Therefore, an object of the present invention is to provide a blood pressure measurement device that can select a wrist to be worn.

According to one aspect, the pair of attachment portions provided at positions facing the region where the wrist artery exists and having end surfaces curved in accordance with the shape of a part of the left and right wrists in the circumferential direction, and the pair of attachments There is provided a blood pressure measurement device comprising: a fixture provided in a section; and one sensing body that is attached to a selected one of the pair of attachment sections and detects the pressure of the artery.

Here, the region where one artery of the wrist exists is a region where one of the radial artery or ulnar artery of the wrist exists, and is preferably a region where the radial artery exists.

According to this aspect, the blood pressure measuring device can be attached to one selected from the left and right wrists by attaching the sensing body to the selected attachment part of the pair of attachment parts.

In the blood pressure measurement device according to the above aspect, there is provided a blood pressure measurement device in which the pair of attach units can be attached to the sensing body in the same direction when attached to the wrist.

According to this aspect, the blood pressure measurement device can maintain usability since the orientation of the display unit of the sensing body does not change regardless of whether the blood pressure measurement device is worn on either the left or right wrist.

In the blood pressure measurement device according to the one aspect, the attachment unit has an opening provided at a position facing a region where one artery of the wrist exists, and the sensing body is attached to the attachment unit. A sensor module disposed opposite to the opening and in contact with a region of the wrist where the artery exists, a sensor unit having a pressing mechanism for pressing the sensor module toward the wrist, and the sensor unit are accommodated In addition, a blood pressure measurement device is provided that includes a case that can move relative to the attachment unit in a direction away from the wrist when the wrist is attached to the wrist.

According to this aspect, even if the case moves in a state where the sensor module is in contact with the wrist, the case moves in a direction away from the wrist and the attachment part. Therefore, the sensor module accommodated in the case is moved when the case is moved. And it does not interfere with the attached part. For this reason, it is possible to prevent the sensor module from being damaged when the case is moved.

In the blood pressure measurement device according to the above aspect, the pair of attachment units each have a shaft support at an end in the same direction in the circumferential direction of the wrist, and the sensing body is rotatably connected to the shaft support, A blood pressure measurement apparatus having a rotation axis that rotates with respect to the attachment unit is provided.

According to this aspect, the blood pressure measurement device rotates the sensing body about one axis with respect to the attachment unit in order to move the sensing body in a direction away from the attachment unit, thereby securely attaching the sensing body to the attachment unit. It can be moved in the direction away from. The blood pressure measurement device may have a simple configuration in which the shaft support portion and the rotation shaft are provided in the attachment portion and the sensing body.

In the blood pressure measurement device according to the one aspect, the sensing body includes an adjustment unit that accommodates the sensor unit so as to be movable in a circumferential direction of the wrist and adjusts a position of the sensor unit in the circumferential direction of the wrist. A measuring device is provided.

According to this aspect, it is possible to adjust the position of the sensor unit with respect to the artery even after the blood pressure measuring device is attached to the wrist, so the pressure of the artery is measured at a suitable position. can do.

In the blood pressure measurement device according to one aspect, the blood pressure measurement device having a shape in which the opening can palpate the wrist is provided.

According to this aspect, it is possible to palpate the wrist from the opening, and when attaching the blood pressure measurement device to the wrist, it is possible to search for the artery by palpation and adjust the position of the blood pressure measurement device. It becomes easy to mount the blood pressure measurement device at a proper position.

In the blood pressure measurement device according to the above aspect, the control board is connected to the sensor module via a cable and calculates a blood pressure value from the pressure of the artery detected by the sensor module, the display unit that displays the blood pressure value, There is provided a blood pressure measurement apparatus further comprising a main body case that houses a control board and that exposes the display unit to an outer surface and a main body fixing member that is provided on the main body case and fixes the main body case to the wrist. The

According to this aspect, even when the apparatus main body is provided separately from the sensor module, the positional relationship between the apparatus main body and the sensor module can be made the same when worn on the left and right wrists.

In the blood pressure measurement device according to the one aspect, the control board is provided in the case and calculates a blood pressure value from the pressure of the artery detected by the sensor module, and is disposed to be exposed on an outer surface of the case. There is provided a blood pressure measurement device that further includes a display unit that displays.

According to this aspect, the direction of the display unit can be made the same when worn on each of the left and right wrists.

The present invention can provide a blood pressure measurement device capable of selecting a wrist to be worn.

FIG. 1 is a perspective view showing a configuration of a blood pressure measurement device according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the blood pressure measurement device. FIG. 3 is a perspective view showing a configuration of a sensor device of the blood pressure measurement device. FIG. 4 is a perspective view showing a configuration of a part of the sensor device of the blood pressure measurement device. FIG. 5 is a perspective view showing one of a pair of attachment units of the sensor device. FIG. 6 is a perspective view showing the other of the same pair of attachment parts. FIG. 7 is a cross-sectional view showing a state in which the pair of attachment parts are respectively attached to the left and right wrists. FIG. 8 is a perspective view showing a configuration of a sensor unit of the blood pressure measurement apparatus. FIG. 9 is a plan view showing the configuration of the sensor unit. FIG. 10 is a cross-sectional view showing configurations of a sensor module and an air bag of the sensor unit. FIG. 11 is a cross-sectional view showing configurations of the sensor module and the air bag. FIG. 12 is a cross-sectional view showing configurations of the sensor module and the air bag. FIG. 13 is a cross-sectional view showing the configuration of the blood pressure measurement device as worn on the wrist. FIG. 14 is a cross-sectional view showing the configuration of the blood pressure measurement device as worn on the wrist. FIG. 15 is a cross-sectional view showing the configuration of the blood pressure measurement device as worn on the wrist. FIG. 16 is a cross-sectional view showing a configuration of a sensor module of the sensor unit. FIG. 17 is a plan view showing the configuration of the sensor module. FIG. 18 is an explanatory diagram illustrating an example of position adjustment of the sensor unit of the blood pressure measurement device. FIG. 19 is a flowchart showing an example of blood pressure measurement using the blood pressure measurement device. FIG. 20 is an explanatory diagram showing an example of blood pressure measurement using the blood pressure measurement device. FIG. 21 is an explanatory diagram showing an example of blood pressure measurement using the blood pressure measurement device. FIG. 22 is an explanatory diagram showing an example of blood pressure measurement using the blood pressure measurement device. FIG. 23 is a perspective view showing a configuration of a blood pressure measurement device according to another embodiment of the present invention. FIG. 24 is a block diagram showing a configuration of the blood pressure measurement device. FIG. 25 is an explanatory diagram showing a state in which the blood pressure measurement device is mounted on the left wrist. FIG. 26 is an explanatory diagram showing a state in which the blood pressure measurement device is mounted on the right wrist. FIG. 27 is a perspective view showing a configuration of a blood pressure measurement device according to another embodiment of the present invention. FIG. 28 is a bottom view showing an attachment part of a blood pressure measurement device according to another embodiment of the present invention.

[First Embodiment]
Hereinafter, an example of the blood pressure measurement device 1 according to the first embodiment of the present invention will be exemplified below with reference to FIGS.

FIG. 1 is a perspective view showing a configuration of a blood pressure measurement device 1 according to an embodiment of the present invention with a main body fixture 16 closed. FIG. 2 is a block diagram illustrating a configuration of the blood pressure measurement device 1. FIG. 3 is a perspective view showing the configuration of the sensor device 5 of the blood pressure measurement device 1 with the sensing body 42 opened. FIG. 4 is a perspective view illustrating a configuration in which the sensor unit 52 is removed from the sensor device 5 of the blood pressure measurement device 1. FIG. 5 is a perspective view showing the first attachment portion 41 </ b> A among the pair of attachment portions 41 of the sensor device 5. FIG. 6 is a perspective view showing the second attachment portion 41 </ b> B among the pair of attachment portions 41 of the sensor device 5.

FIG. 7 is a cross-sectional view showing a state in which the first attach portion 41A and the second attach portion 41B are attached to the left and right wrists. FIG. 8 is a perspective view showing the configuration of the sensor unit 52 of the blood pressure measurement device 1. FIG. 9 is a plan view showing the configuration of the sensor unit 52. FIG. 10 is a cross-sectional view showing the configuration of the sensor module 63 and the air bladder 62 of the sensor unit 52 along the line XX in FIG. FIG. 11 is a cross-sectional view showing the configuration of the sensor module 63 and the air bladder 62 along the line XI-XI in FIG. FIG. 12 is a cross-sectional view showing the configuration of the sensor module 63 and the air bladder 62 along the line XII-XII in FIG. 13 to 15 are cross-sectional views showing a state in which the configuration of the blood pressure measurement device 1 is attached to the wrist 100. FIG. 16 is a cross-sectional view showing the configuration of the sensor module 63 of the sensor unit 52. FIG. 17 is a plan view showing the configuration of the sensor module 63 of the sensor unit 52.

In each drawing, the radial artery of the wrist 100 is denoted by 110, the radial bone is denoted by 111, the ulnar artery is denoted by 112, the ulna is denoted by 113, and the tendon is denoted by 114.

The blood pressure measurement device 1 is an electronic blood pressure measurement device that is attached to a wrist 100 of a living body and calculates a blood pressure value from the pressure of the radial artery 110. As shown in FIGS. 1 to 14, for example, the blood pressure measurement device 1 includes a device body 4 and a sensor device 5. For example, in the blood pressure measurement device 1, the sensor device 5 is attached to a region of the wrist 100 where the radial artery 110 exists, and the device body 4 is attached to the wrist 100 adjacent to the elbow side of the sensor device 5.

Such a blood pressure measurement device 1 measures the pressure of the pressure pulse wave for each heartbeat that changes in conjunction with the heartbeat of the radial artery 110 by compressing the radial artery 110 with the sensor device 5. Moreover, the blood pressure measuring device 1 processes the measured pressure by the device main body 4 based on the tonometry method, and obtains blood pressure.

As shown in FIGS. 1 and 2, the apparatus main body 4 includes a main body case 11, an operation unit 12, a display unit 13, a pump 14, a control board 15, and a main body fixture 16. Further, for example, the apparatus main body 4 may be configured to include a cuff in the main body fixture 16 and press the wrist 100 during blood pressure measurement.

The main body case 11 accommodates a part of the operation unit 12, a part of the display unit 13, and the control board 15, and exposes a part of the operation unit 12 and a part of the display unit 13 from the outer surface. The main body case 11 is attached with a main body fixing tool 16.

The operation unit 12 is configured to be able to input a command from the user. For example, the operation unit 12 includes a plurality of buttons 21 provided on the main body case 11 and a sensor that detects an operation of the buttons 21. The operation unit 12 may be a touch panel and may be provided on the display unit 13. The operation unit 12 converts a command into an electric signal when operated by a user. The sensor that detects the operation of the button 21 is electrically connected to the control board 15 and outputs an electrical signal to the control board 15.

The display unit 13 is disposed on the main body case 11 so as to be exposed from the outer surface of the main body case 11. The display unit 13 is electrically connected to the control board 15. The display unit 13 is, for example, a liquid crystal display or an organic electroluminescence display. The display unit 13 displays various information including blood pressure values such as date and time, maximum blood pressure, and minimum blood pressure, and measurement results such as heart rate.

The pump 14 is, for example, a piezoelectric pump. The pump 14 has a tube 14a connected to the sensor device 5, compresses air, and supplies the compressed air to the sensor device 5 through the tube 14a. The pump 14 is electrically connected to the control board 15.

As shown in FIG. 2, the control board 15 includes, for example, a communication unit 31, a storage unit 32, and a control unit 33. The control board 15 is configured by mounting the communication unit 31, the storage unit 32, and the control unit 33 on the board. The control board 15 is connected to the sensor device 5 via a cable 15a. The cable 15 a is disposed outside the main body case 11 through a part of the outer surface of the main body case 11. For example, the cable 15 a is arranged in the sensor device 5 from the inside of the main body case 11 through an opening provided on the side surface of the main body case 11.

The communication unit 31 is configured to be able to transmit and receive information with an external device wirelessly or by wire. The communication unit 31 transmits, for example, information controlled by the control unit 33 and information such as measured blood pressure value and pulse to an external device via a network, and software from the external device via the network. An update program is received and sent to the control unit.

In the present embodiment, the network is, for example, the Internet, but is not limited thereto, and may be a network such as a LAN (Local Area Network) provided in a hospital, or a predetermined standard such as USB. It may be a direct wired communication with an external device using a cable having a terminal. Therefore, the communication unit 31 may include a plurality of wireless antennas and micro USB connectors.

The storage unit 32 calculates a blood pressure value and a pulse from program data for controlling the entire blood pressure measurement device 1, setting data for setting various functions of the blood pressure measurement device 1, and pressure measured by the pressure-sensitive element 71c. The calculation data and the like for this are stored in advance. Further, the storage unit 32 stores information such as the calculated blood pressure value, the pulse, and time series data in which these calculated data are associated with time.

The control unit 33 is composed of, for example, a single CPU or a plurality of CPUs (Central Processing Unit). The control unit 33 controls the overall operation of the blood pressure measurement device 1 and performs each process based on the program data. The control unit 33 is electrically connected to the operation unit 12, the display unit 13, the pump 14, and the sensor device 5, and controls the operation of each component, transmits / receives signals, or supplies power.

The main body fixture 16 includes, for example, one or a plurality of band-shaped bands and a fixing member such as a hook-and-loop fastener that wraps the bands around the wrist 100 and fixes them. The main body fixing tool 16 fixes the main body case 11 to the wrist 100.

In such a device body 4, blood pressure data is continuously generated from the pulse wave of the radial artery 110 detected by the sensor device 5 by the control unit 33 performing processing using the program data stored in the storage unit 32. To do. The blood pressure data includes blood pressure waveform data corresponding to the measured pulse wave waveform. The blood pressure data may further include time-series data of blood pressure feature amounts (blood pressure values). Examples of the blood pressure feature amount include, but are not limited to, systolic blood pressure (SBP) and diastolic blood pressure (DBP; Diastolic Blood Blood Pressure). The maximum value in the pulse waveform for one heartbeat corresponds to systolic blood pressure, and the minimum value in the pulse waveform for one heartbeat corresponds to diastolic blood pressure.

In this embodiment, the apparatus main body 4 measures a pressure pulse wave as a pulse wave by a tonometry method. Here, the tonometry method is a method in which the radial artery 110 is pressed from above the skin with an appropriate pressure to form a flat portion in the artery, and the sensor device 5 performs pressure in a state where the inside and outside of the radial artery 110 are balanced. A method for measuring pulse waves. According to the tonometry method, blood pressure values for each heartbeat can be obtained.

As shown in FIGS. 1, 3 to 7, the sensor device 5 includes a pair of attachment parts 41, a sensing body 42, and a fixture 43.

One of the pair of attachment portions 41 is attached to the left wrist 100A, and the other is attached to the right wrist 100B. Hereinafter, the attachment part 41 attached to the left wrist 100A will be described as a first attachment part 41A, the attachment part 41 attached to the right wrist 100B will be described as a second attachment part 41B, and common matters of these

attachment parts

41A and 41B Will be described as the attachment unit 41.

The attachment portion 41 has a shape in which one main surface follows the circumferential direction of the wrist 100 in a region where the radial artery 110 of the wrist 100 exists. As a specific example, the attachment part 41 is provided on the base 41a, an opening 41b formed in the base 41a, and a base 41a in which a region in contact with the wrist 100 is curved following the shape of the wrist 100 in the circumferential direction. And a cushion 41d provided on the main surface of the base 41a that comes into contact with the wrist 100 of the base 41a.

Here, the first attach part 41A and the second attach part 41B have the base part 41a, the opening part 41b, and the attachment part 41c configured in the same shape, but the base part 41a and the opening part 41b are in the posture attached to the wrist 100. The mounting portions 41c are disposed asymmetrically. That is, in the first attachment portion 41A and the second attachment portion 41B, the attachment portion 41c is formed in an asymmetrical shape and the other shapes are formed in a symmetrical shape in the posture attached to the wrist 100.

Further, the pair of attach units 41 includes a determination unit that can determine the first attach unit 41A and the second attach unit 41B. The determination means is, for example, the color of the attach unit 41, and the pair of attach units 41 is configured with different colors. For example, the determination unit may be configured by changing a part of the color of the attachment unit 41, or may be configured by changing the color of the entire attachment unit 41. Moreover, as a method of making the color of the attachment part 41 different, the material which comprises the attachment part 41, for example, a resin material, may be dye | stained, and the structure which coats the surface may be sufficient. Note that the determination unit is not limited to this, and for example, a character such as right or left or a pattern that can be determined left and right may be printed on the outer surface of the attachment unit 41, and left and right may be printed on a part of the outer surface. It is good also as a structure which can provide right and left judgment by providing the protrusion which can judge these.

The base 41a is configured to be long in one direction. The base 41a is disposed on the palm side of the wrist 100 and on the side of the wrist 100 on the side of the rib 111, and in the circumferential shape of the palm of the wrist 100 and the side of the wrist 100 on the side of the rib 111. Following this, the main surface arranged on the wrist 100 side is curved. Further, the base 41 a abuts at least the main surface on the outer peripheral edge side with the sensing body 42.

Here, as shown in FIGS. 5 to 7, the left wrist 100 </ b> A and the right wrist 100 </ b> B form a substantially symmetric shape although there are differences in the shape of the region of the wrist 100 where the radial artery 110 is arranged. For this reason, the base 41a of the first attach part 41A and the base 41a of the second attach part 41B are configured in the same shape as shown in FIGS. 5 to 7, and are mounted on the wrists 100A and 100B. Are arranged symmetrically.

The opening 41b is provided on the center side of the base 41a, and is formed in a size that allows one or more fingers to be arranged. That is, the opening 41b can palpate a region where the radial artery 110 of the wrist 100 exposed from the opening 41b exists with a finger when the sensor device 5 is attached to the wrist 100, and a part of the sensing body 42 is It is formed in a size that can contact the wrist 100.

The mounting portion 41c is a main surface opposite to the surface facing the wrist 100 of the base portion 41a, and is provided on one end side in the longitudinal direction of the base portion 41a. The attachment portion 41c is configured to hold the sensing body 42 and to move the sensing body 42 in a direction away from the base portion 41a and a direction approaching the base portion 41a. As a specific example, the attachment portion 41c is a shaft support portion that supports the sensing body 42 so as to be rotatable about one axis. For example, the attachment portion 41c is formed integrally with the base portion 41a.

The cushion 41d is, for example, an elastic body configured in a sheet shape with a foamable resin material provided on a main surface that comes into contact with the wrist 100 of the base 41a. The cushion 41d protects the wrist 100 by elastically deforming, for example, when the blood pressure measurement device 1 is attached to the wrist 100.

Here, when the positional relationship between the device body 4 and the sensing body 42 is required, the attachment portion 41c of the first attachment portion 41A and the attachment portion 41c of the second attachment portion 41B are attached to the wrist 100 as shown in FIG. In the state where the sensor device 5 is mounted, the positional relationship between the device main body 4 and the sensing main body 42 can be the same positional relationship. Specifically, in a state where the sensor device 5 is mounted on the left and right wrists 100, the attachment portion 41c is provided at the end portion on the same side in the circumferential direction of the wrist 100. In other words, the attachment portion 41c of the first attachment portion 41A and the attachment portion 41c of the second attachment portion 41B are configured in the same shape as shown in FIG. 7, and are attached to the wrists 100A and 100B. Arranged asymmetrically.

As shown in FIGS. 2 to 17, the sensing body 42 includes a case 51, a sensor unit 52, and an adjusting unit 53 that adjusts the position of the sensor unit 52.

The case 51 is configured, for example, in a rectangular box shape with a surface facing the attachment part 41 being opened. The case 51 holds the sensor unit 52 and the adjusting means 53. The case 51 is attached to the attachment part 41c of the selected one attachment part 41 of the pair of attachment parts 41 so as to be able to reciprocate and rotate along the direction away from the base part 41a. The case 51 is configured to be detachable from the attachment portion 41c.

As a specific example, the case 51 has a rotating shaft 51a that is rotatably attached to and detachable from the attachment portion 41c. In addition, the case 51 has an engagement portion 51b that fixes the case 51 to the base portion 41a when it contacts the base portion 41a. The engaging portion 51b is, for example, a protrusion that engages with an opening provided in the base portion 41a, and is configured to be disengaged from the opening of the base portion 41a when operated.

Furthermore, the case 51 includes a first hole 51c in which the tube 14a is disposed, a second hole 51d in which the cable 15a is disposed, a third hole 51e that movably supports a part of the adjusting means 53, and a sensor. A guide groove 51f for guiding the movement of the unit 52.

The first hole 51c and the second hole 51d are provided on the same side wall of the case 51 adjacent to the apparatus body 4 when the first hole 51c and the second hole 51d are attached to the wrist 100.

3rd hole 51e is provided in the side wall opposite to the side wall of case 51 in which the 1st hole 51c and the 2nd hole 51d are provided. The third hole 51 e is a rectangular opening that extends linearly in the longitudinal direction of the case 51, in other words, when the sensor device 5 is attached to the wrist 100.

The guide groove 51f is provided on the inner surface side of the side wall of the case 51 in which the third hole 51e is provided. The guide groove 51f includes a first groove 51f1 extending from the opening end of the case 51 to a midway toward the top wall facing the opening, and a first groove 51f extending in a direction orthogonal to the first groove 51f1. 2 grooves 51f2. One end of the second groove 51 f 2 is continuous with the first groove 51 f 1, and one end to the other end extends toward one side in the longitudinal direction of the case 51.

The sensor unit 52 includes a movable case 61, an air bag 62, a sensor module 63, and a movable base 64 that holds the sensor module 63 movably in one direction with respect to the movable case 61. The sensor unit 52 is held by the case 51 so as to be movable within a predetermined range along the longitudinal direction of the case 51 by the adjusting means 53.

The movable case 61 accommodates the sensor module 63 and the movable base 64, and holds the movable base 64 holding the sensor module 63 movably toward the opening 41b of the attach portion 41. The movable case 61 is held in the case 51 so as to be movable along the longitudinal direction of the case 51.

As a specific example, the movable case 61 is configured in a rectangular box shape in which a surface facing the attachment portion 41 that houses the air bag 62 and the sensor module 63 is opened. The movable case 61 accommodates an air bag 62, a sensor module 63 and a movable base 64. The movable case 61 has an air bag 62 disposed between the top wall and the movable base 64. The movable case 61 holds the movable base 64 movably in one direction so that the sensor module 63 can protrude and retract from the opening of the movable case 61.

The movable case 61 has a guide protrusion 61a that is arranged so that the guide groove 51f can be moved on the outer surface of the side wall of the case 51 that faces the side wall where the guide groove 51f is provided, and a fixed portion to which a part of the adjusting means 53 is fixed. 61b. As the guide protrusion 61 a moves along the second groove 51 f 2, the movable case 61 moves along the longitudinal direction of the case 51.

The air bag 62 has a bellows structure. The air bladder 62 is fluidly connected to the pump 14 via the tube 14a. As shown in FIGS. 10 to 15, the air bag 62 expands in a direction from the top wall of the movable case 61 toward the opening. The air bag 62 is inflated so that the sensor module 63 protrudes from the opening of the movable case 61 from the position where the sensor module 63 is accommodated in the movable case 61 and touches the wrist 100 from the opening 41b of the attachment part 41. Until the sensor module 63 is moved. The air bag 62 is formed of polyurethane, for example. Such an air bag 62 constitutes a pressing mechanism that presses the sensor module 63 toward the wrist 100 together with the pump 14.

As shown in FIGS. 16 and 17, the sensor module 63 includes a pressure sensor unit 71, a sensor base 72 that holds the pressure sensor unit 71, and covers the sensor base 72 and has an opening 73 a in a region facing the pressure sensor unit 71. And a soft part 74 provided in the opening 73a of the sensor head cover 73.

The sensor module 63 is disposed in the movable case 61 and is held by the movable case 61 so as to be movable within a predetermined movement range along the direction in which the top wall of the movable case 61 and the opening are opposed. That is, the sensor module 63 is held movably in the movable case 61 and its movement is restricted by a restriction means such as a stopper when the sensor module 63 is moved to a position protruding beyond a certain amount from the opening of the movable case 61.

The pressure sensor unit 71 includes a flexible substrate 71a, a substrate 71b mounted on the flexible substrate 71a, and a plurality of pressure sensitive elements 71c mounted on the substrate 71b. The flexible board 71a is connected to the cable 15a, and is electrically connected to the control board 15 via the cable 15a.

The substrate 71b and the plurality of pressure sensitive elements 71c constitute a sensor chip. The plurality of pressure sensitive elements 71c are arranged in one direction to constitute a pressure sensitive element row 71d. One or more pressure-sensitive element rows 71d are provided. When a plurality of pressure sensitive element rows 71d are provided, the plurality of pressure sensitive element rows 71d are arranged at predetermined intervals in a direction orthogonal to the direction in which the plurality of pressure sensitive elements 71c are arranged.

Further, the pressure sensor unit 71 is disposed on the sensor base 72 so that one direction in which the plurality of pressure sensitive elements 71 c are disposed is the width direction of the wrist 100. The pressure sensor unit 71 transmits pressure values measured by the plurality of pressure sensitive elements 71c to the control board 15 via the cable 15a.

The sensor base 72 holds the pressure sensor unit 71 and the cable 15a connected to the pressure sensor unit 71. The sensor base 72 is fitted with a sensor head cover 73 on one main surface, and holds the pressure sensor unit 71 in a region facing the opening 73a of the sensor head cover 73. The sensor base 72 has a movable base 64 fixed to the other main surface.

The sensor head cover 73 comes into contact with the wrist 100 at the end face. The soft part 74 is provided in the opening 73a of the sensor head cover 73 and protects the pressure sensitive element 71c. The opening 73a is configured in a rectangular shape, for example.

The soft portion 74 is formed by, for example, injecting a relatively soft resin material such as silicone resin into the opening 73a. The end surface of the soft part 74 is configured to be flush with the end surface of the sensor head cover 73. The soft part 74 may be formed of a material that comes into contact with the wrist 100 and is capable of detecting the pressure of the radial artery 110 with the pressure-sensitive element 71c. Can be set as appropriate.

The movable base 64 is held in the movable case 61 so as to be movable along one direction approaching and separating from the wrist 100 in a state where the blood pressure measurement device 1 is attached to the wrist 100. For example, the movable base 64 is configured to be movable along a plurality of columnar members provided in the movable case 61. The movable base 64 holds the sensor base 72 so that the sensor base 72 can be moved in one direction with respect to the movable case 61 by fixing the end on the wrist 100 side to the sensor base 72.

The adjusting means 53 is configured to be able to adjust the position of the sensor unit 52 with respect to the case 51 in the circumferential direction of the wrist 100 as shown in FIG. The adjustment means 53 has an adjustment knob 53a that is located on the outer surface of the case 51 and that is partly fixed to the fixed portion 61b of the movable case 61 via the third hole 51e. The adjustment means 53 includes a scale 53b provided adjacent to the third hole 51e of the case 51, and an instruction part 53c provided on the adjustment knob 53a and pointing to the scale 53b.

The adjustment knob 53 a is connected to the sensor unit 52 by being fixed to the movable case 61. The adjustment knob 53a is configured to be able to move the sensor unit 52. That is, the adjustment means 53 moves the sensor unit 52 along the second groove 51f2 by moving the adjustment knob 53a in the longitudinal direction of the third hole 51e, and adjusts the position with respect to the case 51. It is an adjustment mechanism.

The scale 53b and the instruction unit 53c are display units that display the position of the adjustment knob 53a, that is, the position of the sensor unit 52 connected to the adjustment knob 53a in a visible manner.

The fixing tool 43 includes, for example, one or a plurality of band-shaped bands and a fixing member such as a hook-and-loop fastener that wraps the band around the wrist 100 and fixes the attachment part 41 and the sensing body 42 to the wrist 100. . In addition, the fixing tool 43 may be comprised by the 1st belt called the parent which has a buckle, and the 2nd belt called the sword tip fixed to a buckle. In addition, the fixing tool 43 may further have a configuration for fixing the case 51 to the attachment portion 41 by being wound around the case 51.

That is, in the fixing tool 43, the repulsive force when the sensor module 63 presses the wrist 100 due to the expansion of the air bag 62 is applied to the movable case 61, and the adjustment knob 53a directly or from the movable case 61 by the movable case 61. It may be possible to prevent the case 51 from being indirectly pressed via the movement of the case 51 in a direction away from the attachment portion 41.

Next, an example of blood pressure measurement using the blood pressure measurement device 1 will be described with reference to FIGS. 19 to 22. FIG. 19 is a flowchart showing an example of blood pressure measurement using the blood pressure measurement device 1, and shows both the user's operation and the operation of the control unit 33. 20 to 22 are explanatory diagrams illustrating an example of blood pressure measurement using the blood pressure measurement device 1.

First, the wrist 100 to which the sensor device 5 is attached is selected according to the situation of the user's wrist 100, and the sensing body 42 is attached to the selected one of the pair of attachment units 41 (step ST1). For example, the doctor selects the wrist 100 to which the sensor device 5 is to be attached, depending on whether the wrist 100 of the user is injured, the arrangement of the ribs 111, the radial artery 110, and the tendon 114 of the left and right wrists 100.

Next, the user attaches the sensor device 5 and the device main body 4 to which the attach unit 41 corresponding to the wrist 100 is attached to the selected wrist 100. Next, the user searches for the position of the radial artery 110 of the selected wrist 100 by palpation (step ST2). For example, at this time, the skin on the radial artery 110 may be marked by drawing a line with a pen.

Next, the user moves the sensing body 42 of the sensor device 5 away from the attachment unit 41. In the present embodiment, the user operates the engagement portion 51b to release the fixing of the case 51 and the base portion 41a, and rotates the sensing body 42 around the rotation shaft 51a in a direction away from the attachment portion 41.

Next, the user wears the apparatus main body 4 and the sensor apparatus 5 as shown in FIG. 20 (step ST3). As a specific example, first, the user passes the wrist 100 through the body fixture 16 of the device body 4 and the fixture 43 of the sensor device 5, and places the device body 4 and the sensor device 5 at predetermined positions on the wrist 100. Next, the user fastens the main body fixing tool 16 of the apparatus main body 4 to fix the apparatus main body 4 to the wrist 100. At this time, when the cuff is provided on the main body fixing tool 16 of the apparatus main body 4, the user checks whether the skin of the wrist 100 is not sandwiched between the main body fixing tool 16 (cuff) and the main body fixing tool 16 ( Check if the cuff is loose. Next, the user adjusts the position of the sensor device 5 so that the opening 41b of the attach portion 41 of the sensor device 5 is located in the radial artery 110 of the wrist 100. Further, the user fixes the sensor device 5 to the wrist 100 by tightening the fixture 43 of the sensor device 5 while maintaining the radial artery 110 positioned in the opening 41b.

Next, as shown in FIG. 21, the user palpates the wrist 100 from the opening 41b of the attachment unit 41 (step ST4), and confirms again that the radial artery 110 is located in the opening 41b. Next, as shown in FIG. 22, the user rotates the sensing main body 42 in a direction close to the attachment portion 41 and fixes the sensing main body 42 to the attachment portion 41 by the engaging portion 51 b. When the position of the sensing body 42 is shifted from the radial artery 110, the user operates the adjustment knob 53a to adjust the position of the sensing body 42.

Next, the user operates the operation unit 12 to instruct blood pressure measurement. The control unit 33 measures the blood pressure based on the blood pressure measurement command (step ST5). At this time, the control unit 33 controls the pump 14 to inflate the air bag 62 so that the sensor module 63 is accommodated in the movable case 61 as shown in FIGS. 10 and 13. 11 and FIG. 14 gradually move toward the wrist 100. Accordingly, as shown in FIGS. 12 and 15, the sensor head cover 73 and the soft part 74 of the sensor module 63 press the region where the radial artery 110 of the wrist 100 exists. When the sensor head cover 73 and the soft portion 74 press the corresponding region of the wrist 100, the radial artery 110 is pressed with an appropriate pressure, as shown in FIG. In this state, each pressure sensitive element 71c of the pressure sensor unit 71 measures a pressure pulse wave.

The control unit 33 obtains the blood pressure by the tonometry method from the pressure pulse wave of the radial artery 110 detected by the pressure sensor unit 71. Prior to blood pressure measurement, the control unit 33 may perform blood pressure measurement for calibration based on the program data stored in the storage unit 32, and the mounting state and pressure of the device main body 4 and the sensor device 5 may be measured. You may determine whether the position of the sensor part 71 is correct.

According to the blood pressure measurement device 1 configured as described above, the sensor device 5 allows the case 51 of the sensing body 42 to be attached to and detached from the attachment portion 41c, and has a pair corresponding to the left and right wrists 100A and 100B. The attachment part 41 is provided. For this reason, the sensor device 5 selects the wrist 100 for blood pressure measurement from the left and right wrists 100A and 100B, and uses the first attachment unit 41A or the second attachment unit 41B corresponding to the selected wrist 100 for the sensor device 5. Can do.

That is, by selecting the attachment unit 41 and attaching the sensing body 42 to the selected attachment unit 41, blood pressure can be appropriately measured on either the left or right wrist 100.

For this reason, since the blood pressure measurement device 1 can select the wrist 100 that can preferably measure blood pressure, the blood pressure can be measured with a certain accuracy. Moreover, since the sensor apparatus 5 can select the wrist 100 to be worn according to the state of the wrist 100 of the user, the degree of freedom is high and the usability is high.

In the state where the sensor device 5 is attached to the wrist 100, the first attachment portion 41A and the second attachment portion 41B are configured such that the attachment portion 41c is provided at the end portion on the same side in the circumferential direction of the wrist 100. For this reason, the sensor device 5 can make the orientation of the sensing body 42 constant regardless of whether the sensing body 42 is attached to the first attach part 41A or the second attach part 41B. For this reason, even if it is a case where the sensor apparatus 5 is mounted | worn to either left and right wrist 100A, 100B, the arrangement | positioning relationship between the apparatus main body 4 and the sensing main body 42 of the sensor apparatus 5 can be made constant.

As a result, even if the control board 15 and the sensing body 42 are connected by the cable 15a, and the pump 14 and the air bag 62 are connected by the tube 14a, the apparatus body 4 is adjacent to the elbow side of the sensor device 5. Thus, the device main body 4 and the sensor device 5 can be attached to the wrist 100. Thereby, blood pressure measuring device 1 has the same usability regardless of whether it is worn on either left or right wrist 100. Moreover, since the distance which the apparatus main body 4 and the sensor apparatus 5 arrange | position does not change, the length of the tube 14a and the cable 15a may be the shortest length.

In addition, by providing an opening 41b of a size that can be palpated in the attach portion 41, the wrist 100 can be palpated while the sensor device 5 is worn, so whether or not the sensor device 5 is worn at a predetermined position. Can be easily determined. That is, it is possible to palpate the wrist 100 from the opening 41b, and when the sensor device 5 of the blood pressure measurement device 1 is attached to the wrist 100, the radial artery 110 is temporarily attached to the wrist 100 while the sensor device 5 is temporarily attached to the wrist 100. By searching through palpation, the position of the sensor device 5 can be adjusted, and then it can be fully mounted.

As a result, it becomes easy to mount the blood pressure measurement device 1 at an appropriate position. Further, since the sensor device 5 includes the adjusting means 53, even after the sensor device 5 is permanently attached to the wrist 100, the radial artery 110 can be further operated by operating the adjusting knob 53a. Since the position of the sensor unit 52 can be adjusted with respect to the radial artery 110, the pressure of the radial artery 110 can be measured at a suitable position.

Further, the sensor device 5 is configured such that the sensing body 42 rotates relative to the attachment unit 41 around one axis as a configuration in which the sensing body 42 can move in a direction away from the attachment unit 41. For this reason, when the sensing main body 42 is moved, the sensor module 63 provided in the sensing main body 42 moves in a direction away from the opening 41 b of the attach portion 41.

Thereby, when the sensing body 42 is moved with respect to the attachment unit 41, the sensor module 63 can be prevented from moving while being in contact with the wrist 100 or the attachment unit 41. More specifically, the sensor unit 52 measures the blood pressure in a state where the sensor head cover 73 and the soft part 74 of the sensor module 63 protrude from the opening of the movable case 61 to a position where the wrist 100 can be appropriately pressed by the air bag 62. Is done.

Even if the sensing body 42 moves relative to the attachment unit 41 in such a state, the sensing body 42 moves in a direction in which the sensor module 63 is separated from the wrist 100, so that the end surface of the sensor head cover 73 and the soft part 74 are The sensing body 42 does not move while in contact with the wrist 100 or the attachment unit 41. For this reason, when the sensing body 42 is moved, the sensor module 63 can be prevented from being damaged due to interference with other configurations or the wrist 100, and a burden on the wrist 100 can be prevented.

As described above, the sensor device 5 is provided with the opening 41b having a palpable shape in the attach portion 41 and enables the sensing main body 42 to move in a direction away from the attach portion 41 and the wrist 100, whereby the sensor module 63 is provided. Can be prevented, and safety can be improved.

In addition, since the sensor device 5 is configured to rotate the sensing body 42 about one axis with respect to the attachment portion 41, the attachment portion 41 is provided with the attachment portion 41, and the rotation shaft 51a pivotally supported by the attachment portion 41c is provided. A simple configuration provided in the sensing body 42 may be used. For this reason, compared with the structure etc. which are slid to one direction with respect to the attachment part 41, the sensor apparatus 5 becomes a simple structure, and can be manufactured cheaply.

In addition, the sensor device 5 has a configuration in which the sensing body 42 rotates with respect to the attachment portion 41 on one end side in the longitudinal direction of the attachment portion 41, so that substantially the entire area of the upper surface of the attachment portion 41 is exposed to the outside. be able to. For this reason, since all the opening parts 41b of the attachment part 41 are exposed, the shape of the opening part 41b required in order to perform palpation can be made as small as possible. The sensor device 5 does not require a rail structure for sliding the sensing body 42 with respect to the attachment part 41 or a structure for holding the sensing body 42 on the attachment part 41 after sliding movement. For this reason, since the shape of the width direction of the wrist 100 can be made as small as possible, the sensor device 5 can be downsized.

In addition, the pair of attachment portions 41 includes a determination unit that determines which of the left wrist 100A and the right wrist 100B is attached to the attachment portion 41, so that it corresponds to one wrist 100 by mistake. It is possible to prevent the sensor device 5 having the attachment part 41 from being attached to the other wrist 100. When the doctor selects the wrist 100 on which the sensor device 5 is to be worn by the doctor, if the doctor passes the corresponding attachment unit 41 to the user based on the determination means, the user confuses the left and right, and the wrong side It is possible to prevent the sensor device 5 from being attached to the wrist 100. In addition, when the user selects the wrist 100 on which the sensor device 5 is to be worn, the user attaches the sensing body 42 and the fixture 43 to the corresponding attachment unit 41 based on the determination means, and then erroneously It is possible to prevent the sensor device 5 from being attached to the wrist 100 on the side.

As described above, according to the blood pressure measurement device 1 according to the embodiment of the present invention, the pair of attach portions 41 corresponding to the left and right wrists 100 are provided, and the sensing body 42 can be attached to and detached from the attach portion 41. The wrist 100 to be worn can be selected.

The present invention is not limited to the above embodiment. In the example described above, the blood pressure measurement device 1 has been described as having a configuration in which the device main body 4 and the sensor device 5 are provided separately, but is not limited thereto. For example, as shown in FIGS. 23 to 24, the blood pressure measurement device 1 may be configured such that the device body 4 and the sensor device 5 are integrated. For example, the blood pressure measurement device 1 having such a configuration may be configured such that the operation unit 12, the display unit 13, the pump 14, and the control board 15 used in the device body 4 are provided in the case 51 of the sensing body 42. In addition, the blood pressure measurement device 1 has a pair of attachment units 41.

Thus, by using the attachment unit 41 corresponding to the wrist 100 selected from the pair of attachment units 41, the posture of the sensing main body 42 is the same regardless of whether the wrist unit 100 is worn on either the left or right wrist 100. As a result, as shown in FIG. 25 and FIG. 26, the display unit 13 provided in the case 51 of the sensing body 42 is in the same direction regardless of whether it is worn on either the left or right wrist 100. The information displayed on the part 13 is displayed in the same direction. As a result, the blood pressure measurement device 1 can maintain the visibility of the display unit 13 and does not need to perform control using a program for switching the display direction of the display unit 13.

In the above-described example, the blood pressure measurement device 1 is configured to move in the direction in which the sensing body 42 moves away from and the direction in which the sensing body 42 moves toward the attachment unit 41, and the sensing body 42 rotates with respect to the attachment unit 41 around one axis. However, the present invention is not limited to this. For example, as shown in FIG. 27, the blood pressure measurement device 1 has a configuration in which the attachment unit 41 and the sensing body 42 are separated from each other as a configuration in which the sensing body 42 moves in a direction away from and in a direction in which the sensing body 42 moves toward the attachment unit 41. Also good. In the case of the blood pressure measurement device 1 having such a configuration, for example, the engagement portions 51b are provided at a plurality of locations of the case 51 of the sensing body 42, and the sensing body 42 is engaged with the attachment portion 41 at a plurality of positions. do it.

In the above-described example, the blood pressure measurement device 1 measures the pressure of the radial artery 110 and obtains the blood pressure by the tonometry method. However, the configuration is not limited to this, and for example, the pressure measurement device 1 measures the pressure of the ulnar artery 112. It may be. Moreover, the structure which calculates | requires blood pressure by methods other than the tonometry method may be sufficient as the blood pressure measuring device 1. FIG. In other words, the blood pressure measurement device 1 can move the sensor module 63 in contact with the wrist 100 with respect to the opening 41b of the attachment unit 41 and the wrist 100, and is in contact with the wrist 100 with other configurations. Any configuration that moves is acceptable. Similarly, the present invention is not limited to a device that measures blood pressure, and can also be used in a device that uses other measurement methods such as a device that measures pulse waves.

Furthermore, in the example mentioned above, although the structure which is the shape which can palpate the wrist 100 is demonstrated for the opening part 41b of the attachment part 41, it is not limited to this. That is, for example, as shown in FIG. 28, the opening 41 b of the attachment portion 41 has a shape that allows the sensor unit 52 to contact the wrist 100 beyond the opening 41 b in a range in which the position is adjusted by the adjusting means 53. It may be.

In the above-described example, the sensor unit 52 has been described with the configuration in which the sensor base 72 of the sensor module 63 is held by the movable base 64 that can move in the movable case 61, but the present invention is not limited to this. For example, the movable base 64 may be configured integrally with the sensor base 72 of the sensor module 63.

That is, each embodiment mentioned above is only illustration of this invention in all points. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. That is, in implementing the present invention, a specific configuration according to the embodiment may be adopted as appropriate.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

DESCRIPTION OF SYMBOLS 1 ... Blood pressure measuring device 4 ... Apparatus main body 5 ... Sensor apparatus 11 ... Main body case 12 ... Operation part 13 ... Display part 14 ... Pump 14a ... Tube 15 ... Control board 15a ... Cable 16 ... Main body fixing tool 21 ... Button 31 ... Communication part 32 ... Storage part 33 ... Control part 41 ... Attached part 41A ... First attached part 41B ... Second attached part 41a ... Base part 41b ... Opening part 41c ... Mounting part 41d ... Cushion 42 ... Sensing body 43 ... Fixing tool 51 ... Case 51a ... rotating shaft 51b ... engaging part 51c ... first hole 51d ... second hole 51e ... third hole 51f ... guide groove 51f1 ... first groove 51f2 ... second groove 52 ... sensor unit 53 ... adjusting means 53b ... Scale 53c ... indicating part 61 ... movable case 61a ... guide protrusion 61b ... fixed part 62 ... air bag 63 ... sensor module 64 ... movable base 71 ... Pressure sensor unit 71a ... Flexible substrate 71b ... Substrate 71c ... Pressure sensitive element 71d ... Pressure sensitive element array 72 ... Sensor base 73 ... Sensor head cover 73a ... Opening 74 ... Soft part 100 ... Wrist 100A ... Left wrist 100B ... Right wrist 110 ... radial artery 111 ... radius 112 ... ulnar artery 113 ... ulna 114 ... tendon

Claims

A pair of attachment units provided at positions facing the region where the artery of the wrist exists, each having an end surface curved according to the shape of a part of the left and right wrists in the circumferential direction;
A fixture provided on the pair of attachment parts;
One sensing body that is attached to a selected one of the pair of attachment units and detects the pressure of the artery;
A blood pressure measurement device comprising:
The blood pressure measurement device according to claim 1, wherein when the pair of attachment parts are attached to the wrist, the sensing body can be attached in the same direction.
The attachment part has an opening provided at a position facing a region where one artery of the wrist exists,
The sensing body is disposed to face the opening when attached to the attachment unit, and a sensor module that contacts the region of the wrist where the artery exists and a pressure that presses the sensor module toward the wrist A sensor unit having a mechanism, and a case that accommodates the sensor unit and that can move relative to the attachment portion in a direction away from the wrist when the sensor unit is attached to the wrist.
The blood pressure measurement device according to claim 2.
Each of the pair of attachment portions has a shaft support portion at an end portion in the same direction in the circumferential direction of the wrist,
The sensing body is rotatably connected to the shaft support portion and has a rotation shaft that rotates with respect to the attachment portion.
The blood pressure measurement device according to claim 3.
The blood pressure measurement device according to claim 3, wherein the sensing body includes an adjustment unit that accommodates the sensor unit so as to be movable in a circumferential direction of the wrist and adjusts a circumferential position of the wrist of the sensor unit. .
The blood pressure measurement device according to claim 3, wherein the opening has a shape capable of palpating the wrist.
A control board that is connected to the sensor module via a cable and calculates a blood pressure value from the pressure of the artery detected by the sensor module, a display unit that displays the blood pressure value, the control board, and the display 7. The apparatus body according to claim 3, further comprising a main body case that exposes a portion to an outer surface and a main body fixing member that is provided on the main body case and fixes the main body case to the wrist. Blood pressure measuring device.
A control board that is provided in the case and calculates a blood pressure value from the pressure of the artery detected by the sensor module;
A display unit arranged to be exposed on the outer surface of the case and displaying the blood pressure value;
The blood pressure measurement device according to any one of claims 3 to 6, further comprising: