Biological information measurement device

Abstract

To improve reliability of fixation of an electrode and a board to a casing of the device and save a space of the device, in a biological information measurement device with an electrocardiographic measurement function.SOLUTION: The biological information measurement device which is worn and used on an arm of a human body to measure at least electrocardiographic waveforms comprises an electrode member having a screwed shaft and a head. The head of the electrode member is fixed in contact with the outer surface of a body casing to couple the shaft to a sensor board inside the body casing and make conduction with the sensor board, thereby collectively perform positioning of the sensor body within the body casing and fixing and conduction of the electrode and the sensor board.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a healthcare-related technical field, and more particularly to a biological information measuring device. [Background technology]

[0002] In recent years, it has become common for individuals to measure their own physical and health information (hereinafter referred to as bioinformation) such as blood pressure values ​​and electrocardiogram waveforms on a daily basis using measuring devices and to utilize the measurement results for health management. This has led to an increased demand for devices that emphasize portability, and many portable measuring devices have been proposed (for example, Patent Document 1, etc.).

[0003] Patent Document 1 discloses a wristwatch-type bioinformation measuring device equipped with electrocardiogram electrodes and capable of measuring electrocardiogram waveforms. Patent Document 1 discloses a structure in which an electrode arranged on the back side of a main body housing (i.e., the side in contact with the skin) is provided with a protrusion facing the inside of the main body housing, and the protrusion is inserted into the main body housing through an opening provided in the main body housing, and is electrically connected to a board on which an electric circuit is arranged via a conductive spring member (spring pin) inside the main body housing. With this configuration, it is possible to arrange electrodes that come into contact with the human body and measure electrocardiogram waveforms. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Chinese Patent No. 110794666 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in the configuration described in the above Patent Document 1, the electrode protrusions and the substrate are electrically connected by a spring member. However, when the electrodes are electrically connected by a spring member, the stress of the spring member may cause the contact (continuity) between the electrodes and the substrate to become unstable. In addition, since the electrodes and the substrate are connected via the spring member, the relative position of the substrate and / or the electrodes in the vertical direction with respect to the main body housing may also become unstable, which may cause the electrodes in contact with the human body to become unstable, making it difficult to perform proper measurements.

[0006] In response to this, it is possible to position the device body and the board using a means for fixing the board to the housing (screws, double-sided tape, etc.). However, when using screws, extra area is required on the mounting surface of the board, and even if double-sided tape is used, there is a risk that it will come off due to the stress of the spring.

[0007] On the other hand, it is also possible to fix the electrodes and the board by soldering while making them conductive without using a spring member. However, even in this case, an area for soldering is required on the board. Furthermore, considering that the electrodes will come into contact with the human body, it is preferable to use a material such as stainless steel that is rust-resistant and safe, but stainless steel cannot be soldered with general solder, which increases costs.

[0008] If it were okay to increase the area of ​​the board, there would be no major problem if a method such as screwing the spring contacts was used, but for wearable devices, there is a demand for both miniaturization and light weight to make them as easy to wear as possible, and the ability to measure multiple pieces of vital signs (multi-function). For this reason, it is desirable to make each component, including the board area, as small and space-saving as possible.

[0009] In view of the above-mentioned problems, the present invention aims to provide a technology in a bioinformation measuring device having an electrocardiogram measurement function that can improve the reliability of fixing the electrodes and substrate to the housing of the device and contribute to reducing the space required for the device. [Means for solving the problem]

[0010] In order to solve the above problems, a biological information measuring device according to the present invention employs the following configuration. A biological information measuring device that is worn on the arm of a human body and is capable of measuring at least an electrocardiogram waveform, a main body housing including a bottom portion located on a side that contacts the arm portion when the device is worn, and a surface portion located on an opposite side to the contact surface; an electrode member having a contact surface exposed at the bottom so as to be capable of coming into contact with the arm portion; a first sensor substrate disposed in the main body housing near the bottom and having an opening with an electrode contact provided on an outer periphery thereof for electrical connection with the electrode member; The electrode member is a shaft portion which constitutes at least a part of a joining means for joining to the first sensor board and which extends in a first direction toward the arm portion when attached to the arm portion, and a head portion which has an area larger than that of the shaft portion when viewed from the first direction and on which the contact surface is formed, the head portion being joined to the first sensor board by the joining means through the opening and being electrically connected to the first sensor board via the electrode contact or a part of the joining means which abuts against the electrode contact, a surface of the head portion opposite to the contact surface is fixed in contact with an outer bottom surface of the main body housing, thereby positioning the first sensor substrate within the main body housing; The present invention is a biological information measuring device characterized by the above.

[0011] In the above, the head unit and the main body housing may be fixed to each other by, for example, adhesion using an adhesive or by insert molding. Examples of the joining means include screws, rivets, and pins. According to the above configuration, the electrode member and the sensor board are positioned and fixed to the main body housing, and electrical conduction between the electrode member and the sensor board is also achieved. Therefore, there is no need to provide a separate configuration for electrical conduction, which increases the reliability of the fixation of the electrode and the board to the housing of the device and contributes to space saving of the device.

[0012] The electrode member may have a threaded shaft portion, and may be joined to the first sensor board by being screwed into a screw member constituting a part of the joining means through the opening, and may be electrically connected to the first sensor by the shaft portion or the screw member being in contact with the electrode contact. That is, the joining means may be the shaft portion (threaded on the shaft portion) and the screw member. The screw member may be a male screw, and the shaft portion may be formed in a cylindrical shape with a screw cut into the inner wall to function as a female screw.

[0013] Further, a recess may be formed in the bottom of the main body housing in a shape into which the head portion can be fitted, and the head portion may be fixed in a state of being fitted in the recess. With this configuration, the contact surface of the electrode member can be formed flush with the bottom of the housing without the head portion protruding from the outer surface of the bottom of the housing. Furthermore, since movement of the head portion in a direction perpendicular to the first direction is also restricted, the head portion and the first sensor board can be more stably positioned and fixed.

[0014] The electrode member is insert-molded into the main body housing, and the head portion of the electrode member has a stopper protrusion having an area larger than that of the contact surface when viewed in the axial direction. The bottom portion may have an inner wall of the recess formed with a retaining recess for engaging with the retaining protrusion. With this configuration, the head portion and the first sensor board can be more stably positioned and fixed because the movement of the head portion away from the main body housing is also restricted.

[0015] The contact surface of the electrode member may be formed in a circular shape when viewed from the axial direction. With this configuration, it is possible to suppress rotational variations during insertion and bonding during device manufacturing, thereby achieving a high manufacturing yield.

[0016] The bottom may have at least a portion having translucency, and a sensor board housing may be provided in an area including the translucent portion when viewed from the first direction inside the main body housing, and a sensor board including a light emitting element and a light receiving element may be housed in the sensor board housing. The "sensor board" may be the first sensor board or a different board. With this configuration, a multifunctional biological information measuring device may be provided that is also capable of measuring biological information (e.g., pulse wave, pulse, blood oxygen saturation, blood pressure) using a photoelectric sensor.

[0017] In addition, when the sensor substrate is a substrate different from the first substrate, the sensor substrate accommodating section may accommodate a sensor substrate set including the first sensor substrate and a second sensor substrate located closer to the bottom than the first sensor substrate, conductive with the first sensor substrate, and equipped with a light emitting element and a light receiving element, and the first sensor substrate and the second sensor substrate may be configured to be conductive with each other through a spring contact. With such a configuration, the repulsive force of the spring contact acts between the positioned first sensor substrate and the second sensor substrate, stabilizing the conductivity between both substrates and enabling the second sensor substrate to be stably fixed to the inner wall of the main body housing on the bottom side.

[0018] The biological information measuring device may have a blood pressure measuring means including a cuff for measuring the blood pressure of the human body, the sensor board housing is provided in the center of the main body housing as viewed from the first direction, and a joint for joining the cuff to the main body is provided in at least a part of an area of ​​the bottom where the sensor board housing is not provided as viewed from the first direction. Also, a cuff cover for fixing the cuff to the main body housing may be provided in an area of ​​the bottom where the sensor board housing is not provided as viewed from the first direction and includes the joint.

[0019] When a blood pressure measuring means using an oscillometric method is further added, it is necessary to provide a contact part with the cuff on the bottom side of the main body housing, and therefore it is necessary to reduce the space required for accommodating the sensor board at the bottom. For this reason, the technology of the present invention, which realizes the fixing and electrical connection between the electrode member and the sensor board in one structure, is suitable for the above-mentioned structure.

[0020] The blood pressure measuring means may include a piezoelectric pump, a valve, and a flow path plate forming a flow path for gas, the flow path plate being made of a conductive material and disposed on the front side of the first sensor substrate in the main body housing, and the first sensor substrate and the flow path plate may be electrically connected by a spring contact. With this configuration, the GND area of ​​the first sensor substrate can be increased, and noise resistance can be improved. Furthermore, since the flow path plate is made of a conductive material, it can function as a shield against noise from internal devices such as a piezoelectric pump for the sensor substrate set.

[0021] The sensor board housing portion may be formed so as to protrude toward the arm portion when the sensor board is attached to the arm. Such a shape is preferable because various sensors such as electrocardiogram electrodes and photoelectric sensors can improve the quality of the biological information they obtain as the degree of contact with the human body increases. do.

[0022] The present invention can be achieved by combining the above-described configurations and processes as long as no technical contradiction occurs. Effect of the Invention

[0023] According to the present invention, in a bioinformation measuring device having an electrocardiogram measuring function, it is possible to provide a technology that can increase the reliability of the fixation of the electrodes and the substrate to the housing of the device and contribute to reducing the space required for the device. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view showing an outline of a biological information measuring device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a side view showing an outline of the biological information measuring device according to the embodiment. [Diagram 3] FIG. 3 is an explanatory diagram showing a positional relationship when the biological information measuring device according to the embodiment is worn on the wrist. [Figure 4] FIG. 4 is an external view of the main body of the biological information measuring device according to the embodiment as viewed from the bottom side. [Diagram 5] FIG. 5 is a schematic cross-sectional view of the biological information measuring device according to the embodiment as viewed from the side. [Figure 6] FIG. 6 is a schematic cross-sectional view of the vicinity of the sensor substrate housing section of the biological information measuring device according to the embodiment. [Figure 7] Fig. 7A is a schematic cross-sectional view illustrating a connection between an electrode and a sensor substrate of a biological information measuring device according to an embodiment. Fig. 7B is an explanatory diagram illustrating an electrode member according to an embodiment. Fig. 7C is an explanatory diagram illustrating a configuration of an opening of a first sensor substrate according to an embodiment. [Figure 8] FIG. 8 is a block diagram showing a functional configuration of the biological information measuring device according to the embodiment. [Figure 9] Fig. 9A is an explanatory diagram according to a first modified example of the embodiment. Fig. 9B is an explanatory diagram according to the first modified example of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] <Embodiment 1> Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative positions, and the like of the components described in the following embodiments are not intended to limit the scope of the present invention.

[0026] (Device configuration) FIG. 1 is an external perspective view showing an outline of the configuration of a biological information measuring device 1 according to this embodiment. FIG. 2 is a side view showing an outline of the configuration of the biological information measuring device 1 according to this embodiment. As shown in FIGS. 1 and 2, the biological information measuring device 1 is generally a wristwatch-type wearable device having a main body 10 and a belt part 20, and can measure biological information such as pulse waves (pulse), blood pressure values, and electrocardiogram waveforms when worn on a human wrist T. FIG. 3 shows the positional relationship between the wrist T and each component of the biological information measuring device 1 according to this embodiment when worn on the wrist T.

[0027] 1 and 2, the main body 10 includes a main body housing 11 and a cuff cover 16, which will be described later. The main body housing 11 is provided with a display 12 (such as an organic EL display), operation buttons 131 and 132, a lug 14, and the like, as well as a sensor board housing section 15 for housing a sensor board. In this embodiment, The side on which display 12 is formed is the surface of main body housing 11, and the side on which sensor board housing section 15 is formed is the bottom of main body housing 11. In the following, the surface side of main body housing 11 may be expressed as the upper side, and the bottom side of main body housing 11 as the lower side. In this embodiment, operation buttons 131 and 132 are made of conductors, and also function as electrodes for measuring electrocardiogram waveforms.

[0028] Fig. 4 shows an external view of main body 10 as viewed from the bottom side. As shown in Fig. 4, the bottom of main body housing 11 has a central area covered with translucent resin cover 151 and an area corresponding to the outer periphery of the central area covered with cuff cover 16. The inside of main body housing 11 of the area covered with resin cover 151 corresponds to sensor board housing 15. Sensor board housing 15 is located in the central area of ​​main body housing 11 in a plan view, is covered at the bottom with translucent resin cover 151, and is formed so as to protrude toward wrist T beyond cuff cover 16 when worn, as shown in Figs. 2 and 3.

[0029] Further, a first electrode 133 and a second electrode 134 are provided on the bottom of the main body housing 11 so that their contact surfaces with the human body are exposed. Either the first electrode 133 or the second electrode 134 functions as a GND electrode during electrocardiogram waveform measurement. When measuring an electrocardiogram waveform, the bioinformation measuring device 1 is worn, the contact surfaces of the first electrode 133 and the second electrode 134 are brought into contact with the skin surface of the wearing part, and the operation button is touched with the fingers of the hand on which the bioinformation measuring device 1 is not worn, thereby performing electrocardiogram waveform measurement in I-lead. The detailed structures of the first electrode 133 and the second electrode 134 will be described later.

[0030] Furthermore, a charging terminal 192 is provided on the bottom of main body housing 11. By connecting the connection terminal of the power supply side device and charging terminal 192, it is possible to charge a rechargeable battery (not shown in FIG. 4).

[0031] 5, the first LED 111, the second LED 113, the first photodiode (PD) 112, and the second PD 121 mounted on the lower surface (mounting surface) of the second sensor substrate 102 described later can be seen through the resin cover 151 from the bottom side of the main body housing 11. The configuration of these will be described later.

[0032] The belt section 20 includes a belt 21 and a hook-and-loop fastener 25 for fixing the biological information measuring device 1 to the wrist T, as well as a first pressure cuff 22 and a second pressure cuff 23 for compressing an artery in the wrist T, and a sensing cuff 24 for detecting a pressure pulse wave. The connection portions between the cuffs 22, 23, and 24 and the main body housing 11 are covered by a cuff cover 16. The cuff cover 16 protects the connection portions between the cuffs 22, 23, and 24 and the main body housing 11, and also has the function of fixing the cuffs 22, 23, and 24 to the main body housing 11.

[0033] Next, the internal configuration of the main body housing 11 will be described with reference to Fig. 5 and Fig. 6. Fig. 5 is a schematic cross-sectional view corresponding to the cross section XX in Fig. 4, and Fig. 6 is an enlarged view of the vicinity of the sensor board housing section 15 in Fig. 5. Note that Figs. 5 and 6 are not accurate cross-sectional views, and the configuration is omitted or deformed as appropriate for convenience of explanation. As shown in Fig. 5, the main body housing 11 contains a rechargeable battery 191, a control board 17, a piezoelectric pump 161, a valve 162, a pressure sensor 163, a flow path plate 164, and the like. In addition, a sensor board housing section 15 formed in a convex shape is provided near the bottom of the main body housing 11, and a sensor board set 100 consisting of a first sensor board 101 and a second sensor board 102 is contained in the sensor board housing section 15.

[0034] In a part of the bottom of the main body housing 11, in an area where the sensor board housing portion 15 is not provided in a plan view, a first connection portion 165 that connects the main body housing 11 (more specifically, a flow path plate 164 in the housing) to the first pressure cuff 22 and the sensing cuff 24, and a second connection portion 165 that connects the main body housing 11 to the second pressure cuff 22 and the sensing cuff 24 are provided. There is provided a second connection portion 166 that connects to pressure cuff 23. First connection portion 165 and second connection portion 166 are covered by cuff cover 16 provided in an area corresponding to the outer periphery of sensor board housing portion 15 at the bottom of the main body. As already described, the portion located at sensor board housing portion 15 is covered with resin cover 151 made of transparent resin.

[0035] The rechargeable battery 191 may be a general-purpose secondary battery such as a lithium ion battery, and can be repeatedly charged by receiving power via a charging terminal 192. The control board 17 is equipped with a processor such as a CPU (not shown), a memory such as a RAM, and the like, and controls the entire vital information measuring device 1. The piezoelectric pump 161, the valve 162, the pressure sensor 163, the flow path plate 164, the first pressure cuff 22, the second pressure cuff 23, and the sensing cuff 24 are components related to blood pressure measurement. The flow path plate 164 is a conductive member (metal), and has a flow path formed therein for sending gas from the piezoelectric pump 161 to each cuff.

[0036] The first sensor substrate 101 and the flow path plate 164 are electrically connected by a spring contact 181, and the control substrate 17 and the flow path plate 164 are also electrically connected by a spring contact 182. By being electrically connected to the flow path plate 164 made of a conductive material, the GND areas of the first sensor substrate 101 and the control substrate 17 can be increased, and noise resistance can be improved. In addition, the flow path plate 164 also functions as a shield for the first sensor substrate 101 against noise generated from internal devices such as the piezoelectric pump 161.

[0037] Next, the sensor board housing section 15 and the sensor board set 100 will be described. As shown in Fig. 6, the sensor board housing section 15 is a space that protrudes from the bottom of the main body housing 11 toward the side that comes into contact with the human body. The sensor board set 100, in which a first sensor board 101 and a second sensor board 102 are stacked in two layers, one above the other, is housed in the space. The first sensor board 101 and the second sensor board 102 are connected by conductive spring contacts 105 and function as a pair.

[0038] The second sensor substrate 102 is provided on its lower surface with two light emitting elements, a first LED 111 and a second LED 113, and two light receiving elements, a first photodiode (PD) 112 and a second PD 121. In this embodiment, the first LED 111 irradiates green light, and the second LED 113 irradiates red light and / or infrared light in addition to green light. Also, a separation wall 152 is provided to separate the first LED 111, the second LED 113, the first PD 112, and the second PD 121 from each other.

[0039] On the other hand, although not shown, a capacitor, an amplifier circuit, an A / D (Analog-to-Digital) conversion circuit, etc. are mounted on the first sensor board 101. The first sensor board 101 may be a double-sided mounting board. In this way, by forming the sensor board set 100 into a two-tiered stacked structure consisting of the second sensor board 102 and the first sensor board 101, it is possible to greatly reduce the area of ​​the board when viewed in plan, compared to the case where all components are mounted on a single board.

[0040] Next, the manner of connection between the first sensor substrate 101 and each electrode will be described with reference to Figs. 7A, 7B, and 7C. Fig. 7A is a schematic cross-sectional view corresponding to the YY cross-section of Fig. 4. However, Fig. 7A is also not an accurate cross-sectional view, and some omissions and deformations have been made for convenience of explanation. Fig. 7B is an explanatory diagram showing the structure of the first electrode 133. Fig. 7C is an explanatory diagram showing an outline of the lower surface of the first sensor substrate 101. As shown in Fig. 7A, the first electrode 133 and the second electrode 134 are fixed in a state of contact with the lower surface of the first sensor substrate 101.

[0041] Referring to FIG. 7B, the first electrode 133 has a so-called hat shape when viewed from the side. The shaft 133a has a cylindrical shape and is generally composed of a shaft 133a (corresponding to the peak of the hat) and a head 133b (corresponding to the brim of the hat). That is, the head 133b has a larger area than the shaft in a plan view. The surface of the head 133b opposite to the shaft 133a becomes the contact surface that comes into contact with the human body when the device is worn. The shaft 133a according to this embodiment is formed in a cylindrical shape with a hollow interior, and the inner wall is threaded. That is, the shaft 133a functions as a female screw. Although the first electrode 133 has been described here, the same is true for the second electrode 134.

[0042] As shown in Fig. 7C, an opening 106 is provided in the first sensor substrate 101, and an electrode pad 107 is formed on the outer periphery of the opening 106. As shown in Fig. 7A, the first electrode 133 and the second electrode 134 are fixed to the first sensor substrate 101 by being screwed into a screw member 103 serving as a male screw through the opening 106 of the first sensor substrate 101. This fixing is performed in a state where the tip surfaces of the shafts of the first electrode 133 and the second electrode 134 are in contact with the electrode pad 107 formed on the outer periphery of the opening 106 of the first sensor substrate 101, so that the first electrode 133 and the second electrode 134 are fixed in a conductive state to the first sensor substrate 101.

[0043] 7A, the head portions of the first electrode 133 and the second electrode 134 are fitted into recesses formed in the main body housing 11. More specifically, the surface on which the shaft portion of the head portion is provided is adhesively fixed in a state of abutting against the outer surface of the recess of the main body housing 11. In this manner, the arrangement of the sensor substrate 101 joined by screws to the first electrode 133 and the second electrode 134 fixed to the main body housing 11 is positioned within the main body housing 11 (the relative positional relationship with the main body housing 11).

[0044] Furthermore, a force is applied to first sensor board 101 toward the bottom side of main body housing 11 due to the screws. Here, since first sensor board 101 is connected to second sensor board 102 via spring contacts 105, second sensor board 102 is pressed against the inner wall on the bottom side of main body housing 11. As a result, second sensor board 102 is stably fixed to main body housing 11, and first sensor board 101 and second sensor board 102 are also stably connected.

[0045] (Functional configuration of the device) Next, the functional configuration of the biological information measuring device 1 will be described. Fig. 8 is a block diagram showing the functional configuration of the biological information measuring device 1. As shown in Fig. 8, the biological information measuring device 1 according to this embodiment has each of the functional units, namely, a pulse wave measuring unit 110, a blood oxygen saturation (SpO2) measuring unit 120, a blood pressure measuring unit 130, an electrocardiogram waveform measuring unit 140, a display unit 150, an operation unit 160, a communication unit 170, a storage unit 180, and a power supply unit 190. These functional units are realized by the processor of the control board 17 reading and executing a program from a memory, thereby controlling each component of the biological information measuring device 1.

[0046] The pulse wave measuring unit 110 includes a first LED 111, a second LED 113, and a first PD 112, and measures the pulse wave and calculates the pulse rate by a so-called photoplethysmography method. Specifically, the first LED 111 and the second LED 113 irradiate green light, and the first PD 112 receives the light reflected inside the living body, thereby detecting the blood flow rate (change in the volume of blood vessels) that changes with the heartbeat, and measuring the pulse wave.

[0047] The SpO2 measuring unit 120 includes a second LED 113 and a second PD 114, and measures blood oxygen saturation from the intensity of the reflected light by receiving red light or infrared light irradiated from the second LED 113 with the second PD 114.

[0048] The blood pressure measurement unit 130 includes a piezoelectric pump 161, a valve 162, a pressure sensor 163, and a flow path plate 164. The cuff includes a first pressure cuff 22, a second pressure cuff 23, and a sensing cuff 24, and measures blood pressure by a so-called oscillometric method. Blood pressure measurement by the oscillometric method is a well-known technique, so a detailed description will be omitted.

[0049] The electrocardiogram waveform measurement unit 140 is configured to include operation buttons 131 and 132, a first electrode 133 and a second electrode 134 provided on the bottom of the main body housing 11, and an electrocardiogram waveform measurement circuit (not shown), and measures the electrocardiogram waveform by a so-called I-lead method. Specifically, the electrocardiogram waveform is measured based on the potential difference between the first electrode 133 and the second electrode 134 that contact the wrist T of one arm when the device is worn, and the fingers of the other hand that touch the operation button 131 or 132 functioning as electrodes.

[0050] The display unit 150 includes a display 12 and displays various information such as the measurement results of biological information and a menu screen. The operation unit 160 includes operation buttons 131 and 132 and accepts input operations from the user via these. The communication unit 170 includes an antenna (not shown) for wireless communication and performs information communication with other electronic devices such as an information processing terminal, for example, by BLE communication. Note that a terminal for wired communication may also be provided.

[0051] The storage unit 180 includes a main storage device (not shown) such as a RAM (Random Access Memory) and stores various information such as application programs and measured biological information. In addition to the RAM, a long-term storage medium such as a flash memory may also be provided. The power supply unit 190 includes a rechargeable battery 191 and a charging terminal 192, and functions as a power supply source for each component of the biological information measuring device 1.

[0052] (Effects of this embodiment) According to the configuration of the biological information measuring device 1 of this embodiment, the electrodes on the bottom side of the main body housing 11 and the first sensor substrate 101 can be stably fixed and electrically connected. With such a configuration, it is possible to prevent variations due to individual differences in the contact points between the electrodes and the substrate between individual devices. That is, it is possible to increase the yield rate during manufacturing. In addition, by giving a predetermined length to the shaft parts of the first electrode 133 and the second electrode 134, it is possible to position the first sensor substrate 101 at a location distant from the bottom inner wall of the main body housing 11. This makes it easy to arrange other substrates on the bottom side of the first sensor substrate 101. Therefore, the substrate related to the acquisition of biological information is made into a sensor substrate set 100 of a two-tiered configuration consisting of the first sensor substrate 101 and the second sensor substrate 102, and it is easy to reduce the area of ​​the substrate related to the sensor substrate in a plan view.

[0053] <Modification> In the above embodiment, a recess is formed in the bottom of the main body housing 11, and the heads of the first electrode 133 and the second electrode 134 are fitted into the recess, but the embodiment of the present invention is not limited to this. The shape of the heads of the electrodes may be any shape as long as the electrodes and the first sensor substrate 101 can be positioned in the main body housing 11. Below, modified examples of the shape of the heads of the electrodes and the bottom of the main body housing 11 that engages with the heads will be described. In the following description, the same reference numerals are used for components common to the biological information measuring device 1 of embodiment 1, and detailed description will be omitted.

[0054] (Variation 1) 9A is an explanatory diagram showing a first modified example, and shows the shapes of the first electrode 135, the second electrode 136, and the vicinity of the bottom of the main body housing 11 according to this modified example. As shown in FIG. 9A, no recess is formed in the bottom of the main body housing 11 according to this modified example, and the head parts of the first electrode 135 and the second electrode 136 are fixed to the main body housing 11 in a state in which the contact surfaces are located at positions that protrude slightly from the outer surface of the bottom of the main body housing 11. Specifically, the opposite side to the contact surfaces of the head parts This surface may be bonded to the outer surface of main body housing 11 with an adhesive.

[0055] (Variation 2) FIG. 9B is an explanatory diagram showing the second modified example, and shows the shapes of the first electrode 137, the second electrode 138, and the vicinity of the bottom of the main body housing 11 according to this modified example. As shown in FIG. 9B, the first electrode 137 according to this modified example further has a brim-shaped anti-slip protrusion 137c formed on the head part. The anti-slip protrusion 137c is fixed in a state of being engaged with the anti-slip recess 301 provided on the inner wall of the recess at the bottom of the main body housing 11. Note that only the first electrode 137 has been described here, but the same is true for the second electrode. In this modified example, the first electrode 137 and the second electrode 138 are insert-molded into the main body housing 11 to fix each electrode. According to the configuration of this modified example, the movement of the head part toward the side where it falls out of the main body housing 11 is restricted, so that the electrodes and the first sensor substrate 101 can be more stably positioned and fixed.

[0056] <Other> The above examples are merely illustrative of the present invention, and the present invention is not limited to the above specific embodiments. Various modifications and combinations of the present invention are possible within the scope of the technical concept. For example, the biological information measuring device only needs to have electrodes and circuits for measuring electrocardiogram waveforms, and other functions and configurations for acquiring biological information are not necessarily required. Specifically, the device may be configured without the second sensor substrate 102, that is, the sensor substrate housing section 15 may house only a substrate corresponding to the first sensor substrate 101, rather than the sensor substrate set 100.

[0057] In addition, in each of the above examples, the electrode pads 107 are provided on the lower surface of the first sensor substrate 101, but the electrode pads may be provided on the upper surface. In this case, for example, a conductive material may be used for the screw members to ensure electrical continuity between the first sensor substrate 101 and the electrodes.

[0058] In addition, in the above examples, the means for connecting each electrode to the first sensor substrate 101 are male and female screws, and the shaft portion of each electrode is a female screw, but the shaft portion may be configured as a male screw and the screw member may be a female screw. That is, the electrodes may be configured as bolts, and the screw member may be configured as nuts.

[0059] Furthermore, the means for joining each electrode to the first sensor board 101 is not necessarily limited to screws. For example, a pin can be used instead of a screw member, and the pin can be pressed into a cylindrical shaft portion to simultaneously join and establish electrical continuity between the electrodes and the first sensor board. Alternatively, an electrode pad can be provided on the upper side of the first sensor board, and the tip of the shaft portion can be crimped so as to come into contact with the electrode pad, i.e., the electrode member can be used like a rivet to join and establish electrical continuity between the electrodes and the first sensor board.

[0060] In addition, in each of the above examples, sensor board accommodating section 15 is configured to protrude toward the human body at the bottom of main body housing 11, but this is not necessarily required, and the bottom of main body housing 11 may be flush, including the area of ​​sensor board accommodating section 15. Furthermore, the position where sensor board accommodating section 15 is disposed in a plan view does not necessarily need to be near the center of the bottom. [Explanation of symbols]

[0061] 1. Biological information measuring device 10 Main body 11 Main body 12. Display 14. Rug 15 Sensor board housing 16···Cuff cover 17 Control board 20 Belt section 21. Belt 22...First pressure cuff 23...Second compression cuff 24 Sensing cuff 25... Hook and loop fastener 100···Sensor board set 101: First sensor board 102: Second sensor board 103 Screw member 105, 181, 182...Spring contact 106...Opening 107 Electrode pad 111...1st LED 112 PD 1 113 Second LED 121...2nd PD 131, 132... Operation buttons 133, 135, 137...1st electrode 134, 136, 138...2nd electrode 137c···Protruding part to prevent slipping out 161 Piezoelectric pump 162 Valve 163 Pressure Sensor 164...Flow path plate 165···First connection part 166...Second connection part 151···Translucent cover 152...Isolation wall 191... Rechargeable battery 192...Charging terminal 301....Retaining recess T···Wrist

Claims

1. A biological information measurement device that is worn on the arm of a human body and is capable of measuring at least an electrocardiogram waveform, a main body housing including a bottom portion positioned on the side that contacts the arm portion when the device is worn, and a surface portion positioned on the opposite side from the side that contacts the arm portion; an electrode member having a contact surface exposed at the bottom so as to be able to come into contact with the arm portion; a first sensor substrate disposed in the main body housing near the bottom and having an opening with an electrode contact provided on an outer periphery for electrical connection with the electrode member; The electrode member is a shaft portion that forms at least a part of a joining means for joining to the first sensor substrate and that extends in a first direction toward the arm portion when attached to the arm portion, and a head portion that has an area larger than that of the shaft portion when viewed from the first direction and on which the contact surface is formed, the head portion being joined to the first sensor substrate by the joining means through the opening and being electrically connected to the first sensor substrate via the electrode contact or a part of the joining means that abuts against the electrode contact, a surface of the head portion opposite to the contact surface being fixed in a state of abutting against an outer bottom surface of the main body housing, thereby positioning the first sensor substrate within the main body housing; A biological information measuring device comprising:

2. The electrode member has a threaded shaft portion, and is joined to the first sensor board by being threadedly engaged with a screw member constituting a part of the joining means through the opening, and is electrically connected to the first sensor board by the shaft portion or the screw member abutting against the electrode contact.

2. The biological information measuring device according to claim 1, wherein:

3. the screw member is a male screw, The shaft portion is formed in a cylindrical shape and has a threaded inner wall that functions as a female screw.

3. The biological information measuring device according to claim 2, wherein:

4. A recess is formed in the bottom of the main body housing so that the head part can be fitted therein, and the head part is fixed in a fitted state in the recess.

2. The biological information measuring device according to claim 1, wherein:

5. The electrode member and the main body housing are insert-molded, the head portion of the electrode member is provided with a retaining protrusion having an area larger than that of the contact surface when viewed from the first direction, An inner wall of the recess in the bottom portion is formed with a retaining recess that engages with the retaining protrusion.

5. The biological information measuring device according to claim 4.

6. The contact surface of the electrode member is formed in a circular shape when viewed from the first direction.

2. The biological information measuring device according to claim 1, wherein:

7. The bottom portion has at least a portion that is translucent, a sensor substrate accommodating section is provided in an area including the light-transmitting portion when viewed from the first direction inside the main body housing; The sensor substrate accommodating section accommodates a sensor substrate including a light emitting element and a light receiving element.

2. The biological information measuring device according to claim 1, wherein:

8. The bottom portion has at least a portion that is translucent, a sensor substrate accommodating section is provided in an area including the light-transmitting portion when viewed from the first direction inside the main body housing; the sensor substrate accommodating section accommodates a sensor substrate set including the first sensor substrate and a second sensor substrate located closer to the bottom than the first sensor substrate, in electrical conduction with the first sensor substrate, and including a light emitting element and a light receiving element; The first sensor substrate and the second sensor substrate are electrically connected by a spring contact.

2. The biological information measuring device according to claim 1, wherein:

9. a blood pressure measuring means including a cuff for measuring the blood pressure of the human body; a joint portion that joins the cuff and the main body housing is provided in at least a part of an area of ​​the bottom portion where the sensor board housing portion is not provided when viewed from the first direction; 8. The biological information measuring device according to claim 7, wherein:

10. a cuff cover for fixing the cuff to the main body housing is provided in an area of ​​the bottom portion, the area including the joint portion and not including the sensor board housing portion when viewed from the first direction; 10. The biological information measuring device according to claim 9.

11. the blood pressure measuring means includes a piezoelectric pump, a valve, and a flow path plate that forms a gas flow path; the flow path plate is made of a conductive material and is disposed on the front side of the main body housing relative to the first sensor substrate; The first sensor substrate and the flow path plate are electrically connected by a spring contact.

10. The biological information measuring device according to claim 9.

12. The sensor board housing portion is formed so as to protrude toward the arm portion when the sensor board housing portion is attached to the arm. The biological information measuring device according to claim 7 ,

Images