JP2019201986A - Blood pressure measuring device - Google Patents

Abstract

To provide a blood pressure measuring device capable of performing palpation of the wrist when mounted and preventing breakage of a sensor module.SOLUTION: A blood pressure measuring device 1 includes: an attaching part 41 having an opening 41b provided at a position opposed to a region where one artery of the wrist 100 is present, which has the shape that allows palpation of the wrist 100 to be performed, and having an end surface curving following the shape of a part in a circumferential direction of the wrist 100; a fastener 43 provided to the attaching part 41; and a sensing body 42 including a sensor unit 52 having a sensor module 63 arranged in the opening 41b that comes in contact with the region where the artery of the wrist 100 is present, and a pressure mechanism for pressing the sensor module 63 against the wrist 100, and a case 51 for storing the sensor unit 52, which can be reciprocated in a direction away from the wrist 100 and the attaching part 41.SELECTED DRAWING: Figure 3

Description

  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. As such a blood pressure measurement device, for example, a technique using an oscillometric method, a technique using a tonometry method, and the like are known (for example, see Patent Document 1). A blood pressure measurement device using an oscillometric method detects the pressure of a cuff wound around the upper arm or wrist of a living body with a pressure sensor, thereby detecting the vibration of the arterial wall and measuring the blood pressure. Moreover, the blood pressure measuring device using the tonometry method measures blood pressure by bringing a sensor module including a plurality of pressure sensors into contact with the wrist in a region where the artery of the wrist exists.

Japanese Patent Laid-Open No. 01-288228

  The blood pressure measurement device using the oscillometric method measures blood pressure from the pressure of the cuff wound around the wrist. However, it is necessary to temporarily stop the blood pressure and cannot measure blood pressure for each beat. On the other hand, a blood pressure measurement device using the tonometry method can measure blood pressure for each beat by detecting the pressure sensor using the pressure sensor to detect the pressure of the radial artery, which is one artery of the arm. However, since the blood pressure measurement 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. Matching is important.

  Therefore, after palpating the wrist and confirming the position of the artery, the pressure sensor is opposed to a region existing in the artery, and the blood pressure measuring device is fixed to the wrist with a fixture. However, when the blood pressure measuring device is wound around the wrist after palpating the artery, the pressure sensor and the artery are displaced from each other.

  Further, the sensor module is configured to detect pressure while in contact with the wrist. However, if the sensor module is moved while the sensor module is in contact with the wrist, the sensor module may be damaged. For this reason, in order to prevent the sensor module from being damaged during use, the user is alerted during use. However, since the burden on the user is large, it is required to reduce the burden on the user during use. It was.

  Accordingly, an object of the present invention is to provide a blood pressure measurement device that can palpate the wrist when worn and prevent the sensor module from being damaged.

  According to one aspect, the wrist is provided at a position opposite to a region where one artery exists, has an opening having a shape capable of palpating the wrist, and bends according to a shape of a part of the wrist in the circumferential direction. An attachment part having an end surface to be attached; a fixture provided in the attachment part; a sensor module disposed in the opening and contacting the region where the artery of the wrist exists; and pressing the sensor module toward the wrist A sensor unit that includes a pressing mechanism, and a sensing body that houses the sensor unit and includes a case that can move relative to the attachment portion in a direction away from the wrist when the sensor unit is attached to the wrist. A blood pressure measurement device is provided.

  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, 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 addition, it is possible to palpate the wrist from the opening, and when attaching the blood pressure measuring device to the wrist, it is possible to locate the artery by palpation and position the blood pressure measuring device so that the blood pressure can be adjusted to an appropriate position. It becomes easy to mount the measuring device.

  In the blood pressure measurement device according to the one aspect, the attachment unit includes a shaft support portion at an end portion in a circumferential direction of the wrist, the sensing body is rotatably connected to the shaft support portion, and is attached to the attachment unit. A blood pressure measurement device having a rotating shaft 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 the circumferential direction of the wrist, and adjusts the position of the sensor unit in the circumferential direction of the wrist. A blood pressure measurement device is provided.

  According to this aspect, it is possible to further 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 the above aspect, the sensing body is configured to be attachable to and detachable from the attachment unit, and the blood pressure measurement device is provided that is movable in a direction away from the wrist.

  According to this aspect, since the blood pressure measurement device can separate the sensing body from the attachment part in order to move the sensing body in the direction away from the attachment part, the sensing body can be reliably removed from the attachment part. It can be moved in the direction of separation.

  The present invention can provide a blood pressure measurement device capable of palpating the wrist when worn and preventing the sensor module from being damaged.

1 is a perspective view showing a configuration of a blood pressure measurement device according to an embodiment of the present invention. The block diagram which shows the structure of the blood pressure measuring device. The perspective view which shows the structure of the sensor apparatus of the blood pressure measuring device. The perspective view which shows a part of structure of the sensor apparatus of the blood pressure measuring device. The perspective view which shows the structure of the sensor unit of the blood pressure measuring device. The top view which shows the structure of the sensor unit. Sectional drawing which shows the structure of the sensor module and air bag of the sensor unit. Sectional drawing which shows the structure of the sensor module and an air bag. Sectional drawing which shows the structure of the sensor module and an air bag. Sectional drawing which shows the structure of the blood pressure measuring device in the state with which the wrist was mounted | worn. Sectional drawing which shows the structure of the blood pressure measuring device in the state with which the wrist was mounted | worn. Sectional drawing which shows the structure of the blood pressure measuring device in the state with which the wrist was mounted | worn. Sectional drawing which shows the structure of the sensor module of the sensor unit. The top view which shows the structure of the sensor module. Explanatory drawing which shows an example of position adjustment of the sensor unit of the blood pressure measuring device. The flowchart which shows an example of the blood pressure measurement using the blood pressure measurement apparatus. Explanatory drawing which shows an example of the blood pressure measurement using the blood pressure measuring device. Explanatory drawing which shows an example of the blood pressure measurement using the blood pressure measuring device. Explanatory drawing which shows an example of the blood pressure measurement using the blood pressure measuring device. The perspective view which shows the structure of the blood-pressure measuring apparatus which concerns on other embodiment of this invention. The block diagram which shows the structure of the blood pressure measuring device. The perspective view which shows the structure of the blood-pressure measuring apparatus which concerns on other embodiment of this 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. 1 to 14.

  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 configuration of the sensor unit 52 of the blood pressure measurement device 1. FIG. 6 is a plan view showing the configuration of the sensor unit 52.

  FIG. 7 is a cross-sectional view showing the configuration of the sensor module 63 and the air bag 62 of the sensor unit 52 along the line VII-VII in FIG. FIG. 8 is a cross-sectional view showing the configuration of the sensor module 63 and the air bladder 62 along the line VIII-VIII in FIG. FIG. 9 is a cross-sectional view showing the configuration of the sensor module 63 and the air bladder 62 in the cross section taken along line IX-IX in FIG. 10 to 12 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. 13 is a cross-sectional view showing the configuration of the sensor module 63 of the sensor unit 52. FIG. 14 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 indicated by 110, the radius is 111, the ulnar artery is 112, the ulna is 113, and the tendon is indicated 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, 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 pulse wave pressure 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, and the measured pressure Is processed by the apparatus main body 4 based on the tonometry method to determine the 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 illustrated 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 to and from an external device by wireless or wired. 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 configured by, for example, one or a plurality of CPUs (Central Processing Units), and controls operations of the entire blood pressure measurement device 1 and performs each process based on 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 body fixing tool 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 band around the wrist 100 and fixes the 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). 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 the pressure pulse wave as a pulse wave by the 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 radial artery 110, and the sensor device 5 is in a state where the inside and outside of the radial artery 110 are balanced. This is a method of measuring pressure pulse waves. According to the tonometry method, blood pressure values for each heartbeat can be obtained.

  As shown in FIGS. 1, 3, and 4, the sensor device 5 includes an attach unit 41, a sensing body 42, and a fixture 43.

  The attachment part 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 of the left hand 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.

  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.

  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 attachment 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 by 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.

  As shown in FIGS. 2 to 12, 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 in which a surface facing the attachment unit 41 is opened. The case 51 holds the sensor unit 52 and the adjusting means 53. The case 51 is attached to the attachment portion 41c so as to be able to reciprocate in a direction away from the base portion 41a. As a specific example, the case 51 includes a rotation shaft 51a that is rotatably provided on 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 51 c and the second hole 51 d are provided on the same side wall of the case 51 adjacent to the apparatus main body 4 when the first hole 51 c and the second hole 51 d are attached to the wrist 100.

  The 3rd hole 51e is provided in the side wall facing 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 includes 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 on which 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. 7 to 12, 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 and the pump 14 constitute a pressing mechanism that presses the sensor module 63 toward the wrist.

  As shown in FIGS. 13 and 14, 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 portion 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 a direction in which the top wall of the movable case 61 and the opening face each other. 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 15 a 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 end surface of the sensor head cover 73 contacts the wrist 100. 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 part 74 is molded 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.

  As shown in FIG. 15, the adjusting unit 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. 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 so as to be visible.

  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. FIG. 16 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. 17 to 19 are explanatory diagrams illustrating an example of blood pressure measurement using the blood pressure measurement device 1.

  First, the user searches for the position of the radial artery 110 on the wrist 100 by palpation (step ST1). 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 separates the sensing body 42 of the sensor device 5 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, as shown in FIG. 17, the user wears the apparatus main body 4 and the sensor apparatus 5 (step ST2). 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 main body fixing tool 16 of the apparatus main body 4 is tightened to fix the apparatus main body 4 to the wrist 100. At this time, if the body fixing tool 16 of the apparatus main body 4 is configured to have a cuff, the skin of the wrist 100 is not sandwiched between the body fixing tool 16 (cuff) and the body fixing tool 16 (cuff) is Check for looseness. Next, the position of the sensor device 5 is adjusted so that the opening 41 b of the attach portion 41 of the sensor device 5 is located at 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. 18, the user palpates the wrist 100 from the opening 41b of the attachment unit 41 (step ST3), and confirms again that the radial artery 110 is located in the opening 41b. Next, as shown in FIG. 19, 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 position of the sensing body 42 is adjusted by operating the adjustment knob 53a.

  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 ST4). At this time, the controller 33 controls the drive of 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. 8 and 11 gradually move toward the wrist 100, and as shown in FIGS. 9 and 12, the sensor head cover 73 and the soft portion 74 of the sensor module 63 press the area where the radial artery 110 of the wrist 100 exists. . When the sensor head cover 73 and the soft part 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 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 wrist device 100 can be palpated with the sensor device 5 attached by providing the attachment portion 41 with an opening 41b having a size that allows palpation. It can be easily determined whether or not 5 is mounted at a predetermined position. 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 is easy to attach the blood pressure measurement device 1 to 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 about 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 main 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.

  As described above, according to the blood pressure measurement device 1 according to the embodiment of the present invention, the attachment body 41 is provided with the opening 41b having a palpable shape and rotates around the axis with respect to the attachment section 41. By providing, it is possible to palpate the wrist at the time of wearing and prevent the sensor module 63 from being damaged.

  In addition, this invention is not limited to the said 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. 20 and 21, in the blood pressure measurement device 1, the device body 4 and the sensor device 5 may be configured integrally. 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 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 illustrated in FIG. 22, the blood pressure measurement device 1 has a configuration in which the attachment unit 41 and the sensing body 42 are separated 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 away from 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.

  Further, for example, the configuration in which the sensing body 42 rotates with respect to the attachment unit 41 around one axis is not limited to the above example. That is, in the above-described example, the sensing main body 42 has been described as being configured to rotate about one axis extending in a direction orthogonal to the circumferential direction of the wrist 100 with respect to the attachment unit 41, but is not limited thereto. In other words, the sensing body 42 may be configured to rotate about one axis extending in the tangential direction of the wrist 100 with respect to the attachment unit 41.

  In the above-described example, the blood pressure measurement device 1 has been configured to measure the pressure of the radial artery 110 and obtain the blood pressure by the tonometry method. However, the present invention is not limited to this. For example, the blood pressure measurement device 1 is configured to measure 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.

  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 the 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.

  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 ... Body fixing tool, 21 ... button, 31 ... communication part, 32 ... memory part, 33 ... control part, 41 ... attach part, 41a ... base part, 41b ... opening part, 41c ... attachment part, 41d ... cushion, 42 ... sensing body , 43 ... Fixing tool, 51 ... Case, 51a ... Rotating shaft, 51b ... Engagement part, 51c ... First hole, 51d ... Second hole, 51e ... Third hole, 51f ... Guide groove, 51f1 ... First 1 groove, 51f2 ... 2nd groove, 52 ... sensor unit, 53 ... adjustment means, 53b ... scale, 53c ... indicator, 61 ... movable case, 61a ... guide projection, 61b ... fixed part, 62 ... air bag, 63 ... Sensor module, 64... Dynamic base, 71 ... Pressure sensor unit, 71a ... Flexible substrate, 71b ... Substrate, 71c ... Pressure sensitive element, 71d ... Pressure sensitive element row, 72 ... Sensor base, 73 ... Sensor head cover, 73a ... Opening, 74 ... Soft part, DESCRIPTION OF SYMBOLS 100 ... Wrist, 110 ... Radial artery, 111 ... Radius, 112 ... Ulna artery, 113 ... Ulna, 114 ... Tendon.

Claims (4)

An attachment portion provided at a position opposite to a region where one artery of the wrist is present, having an opening having a shape capable of palpating the wrist, and having an end surface curved in accordance with the shape of a part of the wrist in the circumferential direction When,
A fixture provided in the attachment part;
A sensor module disposed in the opening and contacting a region where the artery of the wrist exists, a sensor unit having a pressing mechanism for pressing the sensor module toward the wrist, and the sensor unit are accommodated, and A sensing body including a case that can move relative to the attachment unit in a direction away from the wrist when worn on the wrist;
A blood pressure measurement device comprising: The attach part has a shaft support part at an end part in a circumferential direction of the wrist,
The blood pressure measurement device according to claim 1, wherein the sensing body includes a rotation shaft that is rotatably connected to the shaft support portion and rotates with respect to the attachment portion.   2. The blood pressure measurement device according to claim 1, wherein the sensing main body accommodates the sensor unit so as to be movable in a circumferential direction of the wrist, and includes an adjusting unit that adjusts a position of the sensor unit in the circumferential direction of the wrist. . The sensing body is configured to be detachable from the attachment unit,
The blood pressure measurement device according to claim 1, wherein the sensing body is movable in a direction away from the wrist.