Biological information measurement device

Abstract

A biological information measurement device capable of measuring at least an electrocardio waveform, the biological information measurement device being used by being attached to an arm of a human body, the biological information measurement device being configured so as to have an electrode member having a threaded shaft portion and a head portion, the head portion of the electrode member being fixed in a state in which the head portion is in contact with an outer surface of a main body case, and the electrode member being fixed in a state in which the head portion is in contact with the outer surface of the main body case. The shaft portion is joined to the sensor substrate in the main body case, and the shaft portion is electrically connected to the sensor substrate, whereby positioning of the sensor substrate in the main body case and fixing and electrically connecting of the electrode and the sensor substrate can be performed at the same time.

Description

Technical Field

[0001] The present invention belongs to the technical field related to medical care, and in particular relates to a biological information measuring device. Background Art

[0002] In recent years, it has become common for individuals to measure their own blood pressure values, electrocardiogram waveforms and other information related to their body and health (hereinafter referred to as biological information) by measuring equipment on a regular basis, and to effectively use the measurement results for health management. As a result, the demand for devices that emphasize portability has increased, and many portable measuring devices have been proposed (for example, Patent Document 1, etc.).

[0003] Patent document 1 discloses a wristwatch-type biological information measuring device that has an electrocardiogram electrode and can measure an electrocardiogram waveform. Patent document 1 discloses a structure in which an electrode disposed on the back side of a main body case (i.e., the side in contact with the skin) is provided with a protrusion facing the inside of the main body case, and the protrusion is inserted into the main body case from an opening provided in the main body case, and is connected to a substrate provided with a circuit via a conductive spring member (spring pin) in the main body case. With such a structure, an electrode in contact with the human body is provided, and an electrocardiogram waveform can be measured.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Chinese Patent No. 110794666 Summary of the invention

[0007] Problems to be solved by the invention

[0008] Furthermore, in the configuration described in the above-mentioned Patent Document 1, the protrusion of the electrode is connected to the substrate via a spring member. However, when the electrode is connected via the spring member, the contact (conduction) between the electrode and the substrate may become unstable due to the stress of the spring member. In addition, since the electrode and the substrate are connected via the spring member, the relative position of the substrate and / or the electrode in the vertical direction relative to the main body housing also becomes unstable, and thus the electrode in contact with the human body may also shake and cannot be properly measured.

[0009] In contrast, it is also considered to use a means for fixing the substrate to the housing (screw fasteners, double-sided tape) to position the device body and the substrate. However, in the case of screw fasteners, an additional area is required for the mounting surface of the substrate, and even if double-sided tape is used, there is a possibility that it will peel off due to the stress of the spring.

[0010] On the other hand, it is also considered that the electrode and the substrate are connected and fixed by welding without using a spring member. However, in this case, an area for welding is also required on the substrate. In addition, if contact with the human body is considered, the raw material of the electrode is preferably a raw material such as stainless steel that has rust resistance and safety, but stainless steel cannot be welded with ordinary solder, which is the main reason for the cost increase.

[0011] If the area of ​​the substrate can be increased, there will be no major problems even if a screw fastener or other unit is used on the spring contact. However, in order to make the wearability as good as possible in a wearable terminal, it is required to take into account miniaturization, lightness, and the ability to measure multiple biological information (multifunctionality). Therefore, it is ideal to make each component, headed by the area of ​​the substrate, as small and space-saving as possible.

[0012] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a technology capable of improving the reliability of fixing electrodes and a substrate to a housing of a biological information measuring device having an electrocardiographic measuring function and contributing to space saving of the device.

[0013] Solutions for solving problems

[0014] In order to solve the above-mentioned problems, the biological information measuring device of the present invention adopts the following structure. That is,

[0015] A biological information measuring device is mounted on a human arm and can at least measure an electrocardiogram waveform. The biological information measuring device is characterized in that:

[0016] A main body shell, which is configured to include a bottom located on a side in contact with the arm portion in a mounted state and a surface located on the opposite side of the bottom;

[0017] an electrode member having a contact surface exposed at the bottom portion so as to be contactable with the arm portion; and

[0018] The first sensor substrate is arranged in the vicinity of the bottom portion inside the main body housing and has an opening portion, wherein the opening portion is provided with an electrode contact point on the outer periphery for conducting with the electrode member.

[0019] The electrode member comprises: a shaft portion constituting at least a portion of a joining unit for joining with the first sensor substrate and extending in a first direction toward the arm portion when mounted on the arm portion; and a head portion having an area larger than that of the shaft portion when viewed from the first direction and having the contact surface formed thereon, wherein the electrode member is joined to the first sensor substrate through the joining unit via the opening portion and is electrically connected to the first sensor substrate via the electrode contact or a portion of the joining unit abutting against the electrode contact.

[0020] The surface of the head portion that faces the contact surface is fixed in a state of being in contact with the outer surface of the bottom of the main body housing, whereby the arrangement of the first sensor substrate in the main body housing is determined.

[0021] It should be noted that, in the above, the fixation of the head and the main body shell can be achieved, for example, by bonding using an adhesive, or by insert molding. In addition, threads, rivets, pins, etc. can be exemplified as the joining unit. According to the above-mentioned structure, the electrode member and the sensor substrate are positioned and fixed relative to the main body shell, and conduction between the electrode member and the sensor substrate can also be achieved. Therefore, there is no need to set up a structure for conduction, which can improve the reliability of the fixation of the electrode and the substrate relative to the shell of the device, and contribute to the space saving of the device.

[0022] In addition, the shaft portion may be threaded and screwed with a threaded member constituting a part of the joining unit through the opening portion, thereby joining the electrode member to the first sensor substrate, and the shaft portion or the threaded member abuts against the electrode contact, thereby conducting the electrode member to the first sensor substrate. That is, the joining unit may also be a shaft portion (threaded on the shaft portion) and a threaded member. In addition, the threaded member may be an external thread, and the shaft portion may be formed into a cylindrical shape and have threads cut on the inner wall to function as an internal thread.

[0023] In addition, a recessed portion may be formed at the bottom of the main body shell in a shape in which the head can be fitted, and the head is fixed in a state of being fitted in the recessed portion. According to such a configuration, the contact surface of the electrode member can be formed to be flush with the bottom of the shell without the head protruding from the bottom outer surface of the shell. In addition, since the movement of the head in a direction orthogonal to the first direction is also restricted, the head and the first sensor substrate can be positioned and fixed more stably.

[0024] In addition, the electrode member and the main body shell may be insert-molded, the head of the electrode member may be provided with an anti-slip convex portion, the anti-slip convex portion having an area larger than the contact surface when viewed from the axial direction, and the inner wall of the concave portion at the bottom may be provided with an anti-slip concave portion engaged with the anti-slip convex portion. According to such a configuration, since the movement of the head away from the main body shell is also restricted, the head and the first sensor substrate can be more stably positioned and fixed.

[0025] In addition, the contact surface of the electrode member may be formed into a circular shape when viewed from the axial direction. According to such a configuration, rotation deviation during insertion and bonding can be suppressed during device manufacturing, thereby achieving a high yield during manufacturing.

[0026] In addition, a light-transmitting portion may be provided at least in a portion of the bottom, and a sensor substrate storage portion may be provided in an area including the light-transmitting portion when viewed from the first direction inside the main body shell, wherein a sensor substrate having a light-emitting element and a light-receiving element is stored in the sensor substrate storage portion. It should be noted that the "sensor substrate" mentioned here may be the first sensor substrate or another substrate different from the first sensor substrate. According to such a configuration, a multifunctional biological information measuring device can be formed, which can also measure biological information (such as pulse wave, pulse, blood oxygen saturation, blood pressure) using a photoelectric sensor.

[0027] Furthermore, in the case where the sensor substrate is a substrate different from the first substrate, the sensor substrate storage portion may be configured such that a sensor substrate group including the first sensor substrate and a second sensor substrate is stored in the sensor substrate storage portion, the second sensor substrate is located closer to the bottom side than the first sensor substrate and is in electrical communication with the first sensor substrate, and includes a light emitting element and a light receiving element, and the first sensor substrate and the second sensor substrate are in electrical communication with each other via a spring contact. According to such a configuration, the rebound force of the spring contact acts between the positioned first sensor substrate and the second sensor substrate, thereby stabilizing the electrical communication between the two substrates and enabling the second sensor substrate to be stably fixed to the inner wall of the main housing on the bottom side.

[0028] In addition, the biological information measuring device may also be configured as follows: having a blood pressure measuring unit, the blood pressure measuring unit including a cuff for measuring the blood pressure of the human body, the sensor substrate storage portion being provided at the central portion of the main body shell when viewed from the first direction, and a joint portion for joining the cuff to the main body shell being provided at least in a portion of the bottom portion where the sensor substrate storage portion is not provided when viewed from the first direction. In addition, a cuff cover for fixing the cuff to the main body shell may be provided in the bottom portion where the sensor substrate storage portion is not provided when viewed from the first direction and in a region including the joint portion.

[0029] When a blood pressure measurement unit using an oscillometric method is further added, since a contact portion with the cuff needs to be provided on the bottom side of the main body housing, it is necessary to realize space saving of the sensor substrate storage portion at the bottom. Therefore, a technique such as realizing fixation and conduction between the electrode member and the sensor substrate by a single structure, as in the present invention, is preferred in the above-mentioned structure.

[0030] In addition, the blood pressure measurement unit may include a piezoelectric pump, a valve, and a flow path plate that forms a gas flow path, the flow path plate being formed of a conductive material and arranged in the main body shell on the surface side of the first sensor substrate, and the first sensor substrate and the flow path plate being connected via a spring contact. With such a configuration, the area of ​​the GND (Ground: wire grounding terminal) of the first sensor substrate can be increased, and noise resistance can be improved. In addition, by forming the flow path plate with a conductive material, a shielding function for noise directed to the sensor substrate group can be achieved, and the noise comes from internal devices such as a piezoelectric pump.

[0031] Furthermore, the sensor substrate storage portion may be formed to protrude toward the arm portion in the wearing state. The higher the contact between various sensors such as ECG electrodes and photoelectric sensors and the human body, the higher the quality of biological information obtained by the sensors can be, so such a shape is preferred.

[0032] It should be noted that, as long as the above-mentioned structures and processes do not cause technical contradictions, they can be combined with each other to constitute the present invention.

[0033] Effects of the Invention

[0034] According to the present invention, it is possible to provide a technology that can improve the reliability of fixing electrodes and a substrate to a housing of a living body information measuring device having an electrocardiographic measuring function and contribute to space saving of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1It is a schematic external perspective view showing a biological information measurement device according to an embodiment of the present invention.

[0036] Figure 2 It is a schematic side view showing a living body information measurement device according to an embodiment.

[0037] Figure 3 This is an explanatory diagram showing the arrangement relationship when the living body information measuring device according to the embodiment is worn on a wrist.

[0038] Figure 4 This is an external view of the main body of the biological information measurement device according to the embodiment as viewed from the bottom side.

[0039] Figure 5 This is a schematic cross-sectional view of the living body information measuring device according to the embodiment when viewed from the side.

[0040] Figure 6 It is a schematic cross-sectional view of the vicinity of a sensor substrate housing portion of the biological information measuring device according to the embodiment.

[0041] Figure 7 (A) is a schematic cross-sectional view for explaining connection between an electrode and a sensor substrate of the biological information measurement device according to the embodiment. Figure 7 (B) is an explanatory diagram for explaining the electrode member according to the embodiment. Figure 7 (C) is an explanatory diagram of the configuration of the opening portion of the first sensor substrate according to the embodiment.

[0042] Figure 8 This is a block diagram showing the functional structure of the biological information measurement device according to the embodiment.

[0043] Fig. 9 (A) is an explanatory diagram of a first modified example of the embodiment. Fig. 9 (B) is an explanatory diagram of a second modification example of the embodiment. DETAILED DESCRIPTION

[0044] <Implementation Method 1>

[0045] However, unless otherwise specified, the dimensions, materials, shapes, and relative arrangements of the components described in the following embodiments are not intended to limit the scope of the present invention to these.

[0046] (Device composition)

[0047] Figure 1 : is a perspective view showing the schematic structure of the biological information measurement device 1 of this embodiment. Figure 21 is a side view schematically showing the structure of the biological information measuring device 1 according to this embodiment. Figure 1 , Figure 2 As shown, the biological information measuring device 1 is a wristwatch-type wearable device having a main body 10 and a band 20 , and can measure biological information such as pulse wave (pulse), blood pressure value and electrocardiogram waveform when worn on a wrist T of a human body. Figure 3 2 shows the arrangement relationship between the wrist T and each component of the biological information measurement device 1 when the biological information measurement device 1 according to the present embodiment is worn on the wrist T.

[0048] like Figure 1 and Figure 2 As shown, the main body 10 is configured to include a main body shell 11 and a cuff cover 16 described later. The main body shell 11 is provided with a display 12 (for example, an organic EL (Electro Luminescence) display, etc.), an operation button 131, an operation button 132, an ear 14, etc., and a sensor substrate storage portion 15 for storing a sensor substrate is provided. It should be noted that in the present embodiment, the side on which the display 12 is formed is the surface of the main body shell 11, and the side on which the sensor substrate storage portion 15 is formed is the bottom of the main body shell 11. In addition, hereinafter, the surface side of the main body shell 11 is sometimes expressed as the upper side, and the bottom side of the main body shell 11 is sometimes expressed as the lower side. It should be noted that in the present embodiment, the operation button 131 and the operation button 132 are formed of a conductor, and also function as electrodes for measuring electrocardiographic waveforms.

[0049] Figure 4 2 shows an appearance diagram of the main body 10 when viewed from the bottom side. Figure 4 As shown in FIG. 1 , at the bottom of the main body housing 11, there is a central area covered by a light-transmitting resin cover 151 and an area corresponding to the outer periphery thereof covered by the cuff cover 16. The inner side of the main body housing 11 of the area covered by the resin cover 151 corresponds to the sensor substrate storage section 15. The sensor substrate storage section 15 is located in the central area of ​​the main body housing 11 in a top view, and is covered by the light-transmitting resin cover 151 at the bottom, and as shown in FIG. Figure 2 and Figure 3 As shown in FIG. 1 , the cuff cover 16 is formed to protrude toward the wrist T in the worn state.

[0050] In addition, the first electrode 133 and the second electrode 134 are provided at the bottom of the main body housing 11 in such a manner that the contact surface with the human body is exposed. Either the first electrode 133 or the second electrode 134 functions as a GND electrode when measuring an electrocardiographic waveform. When measuring an electrocardiographic waveform, the living body information 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 a finger on the side where the living body information measuring device 1 is not worn, thereby enabling electrocardiographic waveform measurement under lead I. It should be noted that the detailed structure of the first electrode 133 and the second electrode 134 will be described later.

[0051] In addition, a charging terminal 192 is provided at the bottom of the main body housing 11. By connecting the connection terminal of the power supply side device to the charging terminal 192, the rechargeable battery (in Figure 4 (not shown) for charging.

[0052] In addition, if Figure 5 As shown, the first LED (Light Emitting Diode: light emitting diode) 111, the second LED 113, the first photodiode (PD: photodiode) 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. These structures will be described later.

[0053] The belt portion 20 is configured to include, in addition to the belt 21 and the hook-and-loop fastener 25 for fixing the biological information measurement device 1 to the wrist T, a first compression cuff 22 and a second compression cuff 23 for compressing the artery located at the wrist T, and a sensing cuff 24 for detecting the pressure pulse wave. It should be noted that the connection portion between each cuff 22, 23, 24 and the main body housing 11 is covered by a cuff cover 16. The cuff cover 16 protects the connection portion between each cuff 22, 23, 24 and the main body housing 11, and also has the function of fixing each cuff 22, 23, 24 to the main body housing 11.

[0054] Next, based on Figure 5 and Figure 6 The internal structure of the main body casing 11 will be described. Figure 5 is equivalent to Figure 4 A schematic cross-sectional view of section XX of Figure 6 Yes Figure 5 The enlarged view of the vicinity of the sensor substrate storage portion 15 in FIG. Figure 5 and Figure 6 It is not an accurate cross-sectional view, and the structure is appropriately omitted and deformed for the sake of convenience. Figure 5As shown, a rechargeable battery 191, a control substrate 17, a piezoelectric pump 161, a valve 162, a pressure sensor 163, a flow path plate 164, etc. are stored inside the main body housing 11. In addition, a sensor substrate storage portion 15 formed in a convex shape is provided near the bottom of the main body housing 11, and a sensor substrate group 100 composed of a first sensor substrate 101 and a second sensor substrate 102 is stored in the sensor substrate storage portion 15.

[0055] At the bottom of the main body housing 11, a portion of the area where the sensor substrate storage section 15 is not provided in a plan view is provided with a first connection section 165 that connects the main body housing 11 (more specifically, the flow path plate 164 in the housing) with the first pressing cuff 22 and the sensing cuff 24, and a second connection section 166 that similarly connects the main body housing 11 with the second pressing cuff 23. The first connection section 165 and the second connection section 166 are configured to be covered by the cuff cover 16 provided in an area of ​​the main body bottom corresponding to the outer periphery of the sensor substrate storage section 15. In addition, as described above, the portion located in the sensor substrate storage section 15 is configured to be covered by the resin cover 151 made of transparent resin.

[0056] The rechargeable battery 191 can be a general-purpose secondary battery such as a lithium-ion battery, and can be repeatedly charged by receiving power supply through the charging terminal 192. In addition, the control substrate 17 is equipped with a processor such as a CPU (Central Processing Unit) not shown in the figure, a memory such as a RAM (Random Access Memory), etc., and is responsible for the overall control of the biological information measurement device 1. In addition, the piezoelectric pump 161, the valve 162, the pressure sensor 163, the flow path plate 164, the first pressing cuff 22, the second pressing 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 a flow path for conveying gas from the piezoelectric pump 161 to each cuff is formed inside.

[0057] The first sensor substrate 101 and the flow path plate 164 are electrically connected via the spring contact 181, and the control substrate 17 and the flow path plate 164 are also electrically connected via the spring contact 182. By electrically connecting the flow path plate 164, which is a conductive member, the GND area of ​​the first sensor substrate 101 and the control substrate 17 can be increased, and the noise resistance can be improved. In addition, for the first sensor substrate 101, the flow path plate 164 also functions as a shield against noise generated from internal devices such as the piezoelectric pump 161.

[0058] Next, the sensor substrate storage portion 15 and the sensor substrate group 100 are described. Figure 6As shown in FIG. 1 , the sensor substrate storage portion 15 is a space protruding from the bottom of the main body housing 11 toward the side in contact with the human body. In addition, a sensor substrate group 100 in which a first sensor substrate 101 and a second sensor substrate 102 are stacked in two layers is stored in the space. It should be noted that the first sensor substrate 101 and the second sensor substrate 102 are connected by conductive spring contacts 105, and function as a group of two.

[0059] In the second sensor substrate 102, 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, are arranged on the lower surface of the substrate. It should be noted that, in the present embodiment, the first LED 111 irradiates green light, and the second LED 113 irradiates red and / or infrared light in addition to green light. In addition, a partition wall 152 is provided to isolate the first LED 111, the second LED 113, the first PD 112, and the second PD 121, respectively.

[0060] On the other hand, although not shown in the figure, capacitors, amplifier circuits, A / D (Analog-to-Digital) conversion circuits, etc. are mounted on the first sensor substrate 101. It should be noted that the first sensor substrate 101 may be a double-sided mounting substrate. In this way, by forming the sensor substrate group 100 into a stacked structure of two layers consisting of the second sensor substrate 102 and the first sensor substrate 101, the area of ​​the substrate when viewed from above can be greatly reduced compared to the case where all components are mounted on one substrate.

[0061] Next, based on Figure 7 (A) Figure 7 (B) Figure 7 (C) describes the connection method between the first sensor substrate 101 and each electrode. Figure 7 (A) is equivalent to Figure 4 A schematic cross-sectional view of the YY section of FIG. Figure 7 (A) is not an accurate cross-sectional view and is omitted and deformed for the sake of convenience. Figure 7 (B) is an explanatory diagram showing the structure of the first electrode 133 . Figure 7 (C) is an explanatory diagram showing the outline of the lower surface of the first sensor substrate 101. Figure 7 As shown in FIG. 1A , the first electrode 133 and the second electrode 134 are fixed in a state of being in contact with the lower surface of the first sensor substrate 101 .

[0062] Here, refer to Figure 7(B), the first electrode 133 is in a so-called hat-shaped shape when viewed from the side, and is roughly composed of a shaft portion 133a (equivalent to the top of the hat) and a head portion 133b (equivalent to the brim of the hat). That is, the head portion 133b has a larger area than the shaft portion when viewed from above. It should be noted that the surface of the head portion 133b opposite to the shaft portion 133a becomes the contact surface that contacts the human body when the device is worn. The shaft portion 133a of this embodiment is formed into a cylindrical shape with a hollow interior, and a thread is cut into its inner wall. That is, the shaft portion 133a functions as an internal thread. It should be noted that the first electrode 133 is described here, but the same is true for the second electrode 134.

[0063] like Figure 7 As shown in (C), the first sensor substrate 101 is provided with an opening 106, and an electrode pad 107 is formed on the outer periphery of the first sensor substrate 101. Figure 7 As shown in (A), the first electrode 133 and the second electrode 134 are screwed with the screw member 103 as an external thread through the opening 106 of the first sensor substrate 101, thereby being fixed to the first sensor substrate 101. The fixing is performed in a state where the front end surfaces of the shaft portions 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 to the first sensor substrate 101 in a conductive state.

[0064] In addition, if Figure 7 As shown in (A), the heads of the first electrode 133 and the second electrode 134 are in a state of being fitted into the recess formed in the main body housing 11. More specifically, the surface of the head on the side where the shaft portion is provided is bonded and fixed in a state of abutting against the outer surface of the recess of the main body housing 11. In this way, the configuration of the first sensor substrate 101 joined to the first electrode 133 and the second electrode 134 fixed to the main body housing 11 by the screw fixing member in the main body housing 11 (the relative positional relationship with the main body housing 11) is determined.

[0065] Furthermore, a force toward the bottom side of the main body case 11 is applied to the first sensor substrate 101 by the screw fixing member. Here, since the first sensor substrate 101 is connected to the second sensor substrate 102 via the spring contact 105, the second sensor substrate 102 is pressed against the inner wall of the bottom side of the main body case 11. Thus, the second sensor substrate 102 is stably fixed to the main body case 11, and the first sensor substrate 101 and the second sensor substrate 102 are also stably connected.

[0066] (Functional composition of the device)

[0067] Next, the functional configuration of the biological information measurement device 1 will be described. Figure 8 1 is a block diagram showing the functional structure of the biological information measuring device 1. Figure 8 As shown, the biological information measurement device 1 of this embodiment includes a pulse wave measurement unit 110, a blood oxygen saturation (SpO2) measurement unit 120, a blood pressure measurement unit 130, an electrocardiogram waveform measurement unit 140, a display unit 150, an operation unit 160, a communication unit 170, a storage unit 180, and a power supply unit 190. The processor of the control substrate 17 reads out a program from a memory and executes it to control each component of the biological information measurement device 1, thereby realizing these functional units.

[0068] 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 by a so-called photoelectric pulse wave method to calculate the pulse. Specifically, the first LED 111 and the second LED 113 emit green light, and the first PD 112 receives the reflected light reflected in the living body, thereby detecting the blood flow (capacity change of blood vessels) that changes with the pulsation of the heart and measuring the pulse wave.

[0069] The SpO2 measurement unit 120 includes a second LED 113 and a second PD 121 , and measures the blood oxygen saturation based on the intensity of the reflected light by receiving the reflected light of red light or infrared light emitted from the second LED 113 at the second PD 121 .

[0070] The blood pressure measuring unit 130 includes a piezoelectric pump 161, a valve 162, a pressure sensor 163, a flow path plate 164, a first pressing cuff 22, a second pressing cuff 23, and a sensing cuff 24, and measures blood pressure by the so-called oscillometric method. Blood pressure measurement by the oscillometric method is a well-known technique, so detailed description is omitted.

[0071] The electrocardiogram waveform measuring unit 140 includes the operation buttons 131 and 132, the first electrode 133 and the second electrode 134 provided at the bottom of the main body case 11, and an electrocardiogram waveform measuring circuit (not shown), and measures the electrocardiogram waveform in a so-called lead I method. Specifically, the electrocardiogram waveform is measured based on the potential difference between the first electrode 133 and the second electrode 134 in contact with the wrist T of one arm in the wearing state and the fingers of the other hand in contact with the operation button 131 or the operation button 132 functioning as an electrode.

[0072] The display unit 150 is configured to include a display 12, and displays various information such as the measurement results of biological information and a menu screen. The operation unit 160 is configured to include an operation button 131 and an operation button 132, and accepts user input operations via the operation button 131 and the operation button 132. The communication unit 170 includes an antenna for wireless communication (not shown), and performs information communication with other electronic devices such as an information processing terminal through BLE communication, for example. It should be noted that a terminal for wired communication may also be provided.

[0073] The storage unit 180 is configured to include 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 be provided. The power supply unit 190 is configured to include a rechargeable battery 191 and a charging terminal 192, and functions as a power supply source for each unit constituting the biological information measurement device 1.

[0074] (Effects of this embodiment)

[0075] According to the configuration of the biological information measuring device 1 of the present embodiment, the electrode on the bottom side of the main body housing 11 can be stably fixed and connected to the first sensor substrate 101. With such a configuration, it is possible to prevent deviations caused by individual differences in the contacts between the electrodes and the substrate between the various devices. That is, the yield rate during manufacturing can be improved. In addition, by making the shafts of the first electrode 133 and the second electrode 134 have a predetermined length, the first sensor substrate 101 can be positioned at a distance from the bottom inner wall of the main body housing 11. As a result, other substrates can be easily arranged on the bottom side than the first sensor substrate 101. Therefore, the substrate related to the acquisition of biological information is formed into a sensor substrate group 100 consisting of an upper and lower two-layer structure 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 top view.

[0076] <Modification>

[0077] It should be noted that in the above-mentioned embodiment, a recess is formed at 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 such a mode. The shape of the head of the electrode can be any shape as long as the electrode and the first sensor substrate 101 can be positioned in the main body housing 11. Hereinafter, a modification of the shape of the head of the electrode and the bottom of the main body housing 11 engaged with the head will be described. It should be noted that in the following description, the same reference numerals are used for the components common to the biological information measurement device 1 of the first embodiment, and detailed descriptions are omitted.

[0078] (Variant 1)

[0079] Fig. 9 (A) is an explanatory diagram showing a first modification example, and shows the shapes of the first electrode 135, the second electrode 136, and the bottom of the main body case 11 of this modification example. Fig. 9 As shown in (A), in this modified example, no recess is formed at the bottom of the main body case 11, and each head of the first electrode 135 and the second electrode 136 is fixed to the main body case 11 in a state where the contact surface is located at a position slightly protruding from the bottom outer surface of the main body case 11. Specifically, the surface of the head opposite to the contact surface may be bonded to the outer surface of the main body case 11 by an adhesive.

[0080] (Variant 2)

[0081] Fig. 9 (B) is an explanatory diagram showing a second modification example, and shows the shapes of the first electrode 137, the second electrode 138, and the bottom of the main body case 11 in this modification example. Fig. 9 As shown in (B), the first electrode 137 of this modification example also has a flange-shaped anti-detachment protrusion 137c formed on the head. And, the anti-detachment protrusion 137c is fixed in a state of being engaged with the anti-detachment recess 301 on the inner wall of the recess provided at the bottom of the main body shell 11. It should be noted that only the first electrode 137 is described here, but the same is true for the second electrode. In this modification example, each electrode is fixed by insert molding the first electrode 137 and the second electrode 138 in the main body shell 11. According to the structure of this modification example, the movement of the head to the side where it falls off from the main body shell 11 is restricted, so that each electrode and the first sensor substrate 101 can be positioned and fixed more stably.

[0082] <Others>

[0083] The above-mentioned examples are merely illustrative of the present invention, and the present invention is not limited to the above-mentioned specific solutions. The present invention can be modified and combined in various ways within the scope of its technical concept. For example, the biological information measuring device only needs to have electrodes and circuits for measuring electrocardiographic waveforms, and other functions and structures for obtaining biological information are not necessarily required. Specifically, it is also possible to configure the second sensor substrate 102 not to be provided, that is, only a substrate equivalent to the first sensor substrate 101 is stored in the sensor substrate storage portion 15 without storing the sensor substrate group 100.

[0084] In addition, in each of the above examples, the electrode pad 107 is provided on the lower surface of the first sensor substrate 101, but the electrode pad may be provided on the upper surface of the first sensor substrate 101. In this case, for example, by using a conductive material for the screw member, the conduction between the first sensor substrate 101 and the electrode can be ensured.

[0085] In addition, in each of the above examples, the joining unit between each electrode and the first sensor substrate 101 is an external thread and an internal thread, and the shaft of each electrode is set as an internal thread, but the shaft can also be configured as an external thread and the threaded member can be configured as an internal thread. In other words, the electrode can also be configured as a bolt and the threaded member can be configured as a nut.

[0086] Furthermore, the joining unit of each electrode with the first sensor substrate 101 is not necessarily limited to a screw thread. For example, by using a pin instead of a screw thread member and pressing the pin into a cylindrical shaft portion, the electrode and the first sensor substrate can be joined and connected at the same time. In addition, an electrode pad may be provided on the upper side of the first sensor substrate, and the front end of the shaft portion may be riveted to contact the electrode pad, that is, the electrode member is used as a rivet, thereby joining and connecting the electrode and the first sensor substrate.

[0087] In addition, in each of the above examples, the sensor substrate storage portion 15 is configured to protrude toward the human body at the bottom of the main body housing 11, but this configuration is not necessarily required, and the bottom of the main body housing 11 including the area of ​​the sensor substrate storage portion 15 may be a flat structure. In addition, the position where the sensor substrate storage portion 15 is arranged in a top view does not necessarily need to be near the center of the bottom.

[0088] Description of Reference Numerals

[0089] 1: Bio-information measuring device;

[0090] 10: Main body;

[0091] 11: Main body shell;

[0092] 12: Display;

[0093] 14: ear;

[0094] 15: sensor substrate storage portion;

[0095] 16: Cuff cover;

[0096] 17: Control substrate;

[0097] 20: belt;

[0098] 21: belt;

[0099] 22: First press the cuff;

[0100] 23: Second compression cuff;

[0101] 24: Sensing cuff;

[0102] 25: hook and loop fasteners;

[0103] 100: sensor substrate assembly;

[0104] 101: a first sensor substrate;

[0105] 102: a second sensor substrate;

[0106] 103: threaded member;

[0107] 105, 181, 182: spring contacts;

[0108] 106: opening;

[0109] 107: electrode pad;

[0110] 111: first LED;

[0111] 112: 1st PD;

[0112] 113: second LED;

[0113] 121: 2nd PD;

[0114] 131, 132: operation buttons;

[0115] 133, 135, 137: first electrode;

[0116] 134, 136, 138: second electrode;

[0117] 137c: Anti-detachment convex part;

[0118] 161: Piezoelectric pump;

[0119] 162: valve;

[0120] 163: pressure sensor;

[0121] 164: Flow plate;

[0122] 165: first connecting portion;

[0123] 166: second connecting portion;

[0124] 151: resin cover;

[0125] 152: Isolation wall;

[0126] 191: Rechargeable battery;

[0127] 192: Charging terminal;

[0128] 301: Anti-falling concave part;

[0129] T: Wrist.

Claims

1. A biological information measuring device, which is mounted on a human arm and can at least measure an electrocardiogram waveform, wherein the biological information measuring device has: A main body shell, which is configured to include a bottom located on a side in contact with the arm portion in a mounted state and a surface located on the opposite side of the bottom; an electrode member having a contact surface exposed at the bottom portion so as to be contactable with the arm portion; as well as The first sensor substrate is arranged in the vicinity of the bottom portion inside the main body housing and has an opening portion, wherein the opening portion is provided with an electrode contact point on the outer periphery for conducting with the electrode member. The electrode member includes: a shaft portion constituting at least a portion of a joining unit for joining with the first sensor substrate and extending in a first direction toward the arm portion when attached to the arm portion; and a head portion having an area larger than that of the shaft portion when viewed from the first direction and having the contact surface formed thereon, wherein the electrode member is bonded to the first sensor substrate through the bonding unit via the opening portion, and is electrically connected to the first sensor substrate via the electrode contact or a portion of the bonding unit abutting against the electrode contact, The surface of the head portion that faces the contact surface is fixed in a state of being in contact with the outer surface of the bottom of the main body housing, whereby the arrangement of the first sensor substrate in the main body housing is determined.

2. The biological information measuring device according to claim 1, characterized in that: The electrode member is joined to the first sensor substrate by threading the shaft and screwing the threaded member constituting a part of the joining unit through the opening, and the electrode member is electrically connected to the first sensor substrate by the shaft or the threaded member abutting against the electrode contact.

3. The biological information measuring device according to claim 2, characterized in that: The threaded member is an external thread, The shaft portion is formed in a cylindrical shape, and a thread is cut on the inner wall to function as an internal thread.

4. The biological information measuring device according to claim 1, characterized in that: A recessed portion is formed in the bottom of the main body housing in a shape in which the head portion can be fitted, and the head portion is fixed in a state of being fitted in the recessed portion.

5. The biological information measuring device according to claim 4, characterized in that: The electrode component is insert-molded with the main body shell, The head of the electrode member is provided with an anti-slip convex portion, and the anti-slip convex portion has an area larger than the contact surface when viewed from the axial direction. An anti-slip concave portion that engages with the anti-slip convex portion is formed on an inner wall of the concave portion of the bottom portion.

6. The biological information measuring device according to claim 1, characterized in that: The contact surface of the electrode member is formed in a circular shape when viewed from the axial direction.

7. The biological information measuring device according to claim 1, characterized in that: The bottom portion is provided with a light-transmitting portion at least in a portion thereof. A sensor substrate storage portion is provided inside the main housing in a region including the light-transmitting portion when viewed from the first direction. The sensor substrate housing portion houses a sensor substrate including a light emitting element and a light receiving element.

8. The biological information measuring device according to claim 1, characterized in that: The bottom portion is provided with a light-transmitting portion at least in a portion thereof. A sensor substrate storage portion is provided inside the main housing in a region including the light-transmitting portion when viewed from the first direction. The sensor substrate storage portion stores a sensor substrate group including the first sensor substrate and a second sensor substrate, wherein the second sensor substrate is located closer to the bottom side than the first sensor substrate and is electrically connected to the first sensor substrate, and includes a light emitting element and a light receiving element. The first sensor substrate and the second sensor substrate are electrically connected via a spring contact.

9. The biological information measuring device according to claim 7, characterized in that: The biological information measuring device includes a blood pressure measuring unit, and the blood pressure measuring unit includes a cuff for measuring the blood pressure of the human body. A joining portion for joining the cuff and the main body housing is provided in at least a portion of a region of the bottom portion where the sensor substrate housing portion is not provided when viewed from the first direction.

10. The biological information measuring device according to claim 9, characterized in that: A cuff cover for fixing the cuff to the main body housing is provided on the bottom portion in a region where the sensor substrate housing portion is not provided and includes the joint portion when viewed from the first direction.

11. The biological information measuring device according to claim 9, characterized in that: The blood pressure measurement unit includes a piezoelectric pump, a valve, and a flow path plate forming a flow path for gas. The flow path plate is formed of a conductive material and is arranged in the main body housing on the surface side of the first sensor substrate. The first sensor substrate is electrically connected to the flow path plate via a spring contact.

12. The biological information measuring device according to any one of claims 7 to 11, characterized in that: The sensor substrate housing portion is formed to protrude toward the arm portion in a mounted state.

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