Biological information measuring device

Abstract

To provide a biological information measuring device capable of executing stable measurement with a simple configuration.SOLUTION: A biological information measuring device for measuring a blood pressure and biological information on a person to be measured includes: a support member that curves along a circumferential direction of a measured site of the person to be measured; a belt part wound on an outer peripheral side of the support member; a fluid bag disposed on an inner peripheral side of the support member; a pump; a valve; a blood pressure measuring part; a detection part that comes in contact with the site to be measured of the person to be measured; and a biological information measuring part for measuring biological information using the detection part. The fluid bag includes a first bag part and a second bag part communicated with each other, which are disposed separated in a circumferential direction. The detection part is supported by a detection part support part of the support member exposed on an inner peripheral side between the first bag part and the second bag part, and disposed at a position separated from the end on a detection part side of the first bag part by a predetermined distance, and separated from the end on a detection part side of the second bag part by a predetermined distance, which is the position where a change in a contact state between the detection part and the site to be measured by the movement of the detection part support part accompanying a volume change of the first bag part and the second bag part can be limited within a predetermined range.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a biological information measuring device.

Background Art

[0002] In recent years, along with blood pressure values, information regarding an individual's body and health such as an electrocardiogram waveform (hereinafter also referred to as biological information) is generally measured by the individual himself / herself using a measuring device on a daily basis, and the measurement results are utilized for health management. From this, the demand for devices that emphasize portability has been increasing, and many portable measuring devices have been proposed, and portable devices that can measure both blood pressure values and electrocardiogram waveforms have also been proposed (see Patent Documents 1 and 2).

[0003] In Patent Document 1, electrodes are arranged on the back surface (the surface that contacts the user's body) of the main body of a wristwatch-type electrocardiograph.

[0004] In Patent Document 2, electrodes are arranged on the surface (the surface that contacts the user's body) of a belt-shaped cuff that is wound around the user's arm.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in configurations where electrodes are placed on the back of the main body, as in the technology described in Patent Document 1, the cuff cannot be placed on the back of the main body, resulting in insufficient compression force on the user for blood pressure measurement. In configurations where electrodes are placed on the surface of the cuff, as in the technology described in Patent Document 2, wiring to the electrodes is difficult, and the wiring design must take into account the movement of the electrodes as the cuff expands, resulting in a complex design. Furthermore, when rigid electrodes are used, they hinder the compression of the air bladder provided inside the cuff.

[0007] In view of the conventional technologies described above, the present invention aims to provide a biological information measuring device that can measure blood pressure and biological information stably with a simple configuration. [Means for solving the problem]

[0008] To solve the above problems, the present invention provides a biological information measuring device that measures the blood pressure of a subject and biological information other than said blood pressure, A belt portion that is wrapped around the outer circumference of the measurement site of the person being measured and secures the biometric information measuring device to the measurement site, A fluid bag is positioned on the inner circumference side of the support member, A pump that supplies fluid into the fluid bag, A valve provided in the fluid passage that communicates with the fluid bag, A blood pressure measuring unit that measures the blood pressure at the area to be measured by supplying the fluid from the pump to inflate the fluid bag, thereby compressing the area to be measured, or by controlling the valve to discharge the fluid from the fluid bag and deflating the fluid bag, thereby releasing the pressure on the area to be measured, A detection unit for contacting the part of the person to be measured and measuring the biological information, A biological information measuring unit that measures the biological information using the detection unit, Equipped with, The fluid bag includes a first bag portion and a second bag portion that are spaced apart in the circumferential direction of the support member and communicate with each other. The detection unit is The detection support portion, which is the support member, is supported by the detection support portion that is exposed on the inner circumference side between the first bag portion and the second bag portion. The device is positioned at a location that is a first predetermined distance from the first end of the first bag portion on the detection portion side, and a second predetermined distance from the first end of the second bag portion on the detection portion side, and is positioned in a location that can limit the change in the contact state between the detection portion and the part to be measured due to the movement of the detection portion support portion accompanying the volume change of the first bag portion and the second bag portion to a predetermined range.

[0009] According to this, a detection unit used to measure biological information different from the blood pressure of a person being measured is supported by a detection unit support that is exposed on the inner circumference between a first bag portion and a second bag portion, which are spaced apart in the circumferential direction of the support member. This detection unit is positioned at a first predetermined distance from the first end of the first bag portion on the detection unit side and at a second predetermined distance from the first end of the second bag portion on the detection unit side, so that the change in the contact state between the detection unit and the person being measured due to the movement of the detection unit support portion accompanying the volume change of the first and second bags can be limited to a predetermined range. Therefore, even if the support member moves outward as the first and second bags expand, the change in the contact state between the detection unit and the person being measured is limited to a predetermined range, allowing for stable measurement of biological information without interfering with blood pressure measurement. Thus, stable measurement of blood pressure and biological information can be achieved with a simple and easy-to-manufacture configuration.

[0010] Furthermore, in the present invention, the detection unit may be a photoelectric volume pulse wave sensor, and the biological information may be a pulse wave or information based on said pulse wave.

[0011] Thus, by using a photoelectric volume pulse wave sensor as the detection unit, stable measurement of blood pressure and pulse waves or information based on pulse waves can be achieved with a simple and easy-to-manufacture configuration.

[0012] Furthermore, in the present invention, the detection unit may be an arterial blood oxygen saturation sensor, and the biological information may be arterial blood oxygen saturation or information based on said arterial blood oxygen saturation.

[0013] Thus, by using an arterial blood oxygen saturation sensor as the detection unit, stable measurement of blood pressure and arterial blood oxygen saturation, or information based on arterial blood oxygen saturation, can be achieved with a simple and easy-to-manufacture configuration.

[0014] Furthermore, in the present invention, the biological information is an electrocardiogram waveform, A first electrode that comes into contact with the first part of the person being measured, The detection unit includes a second electrode that contacts the second part, which is the part to be measured and is different from the first part, The electrode support portion, which is the detection unit support portion, The aforementioned biological information measurement unit includes an electrocardiogram measurement unit that measures the electrocardiogram waveform of the person being measured through the first electrode and the second electrode, It may be provided with the following features.

[0015] Such a bio-information measuring device comprises a first electrode that contacts a first body part of the person being measured, a second electrode that contacts a second body part, which is a different body part from the first body part, and is supported by an electrode support, and an electrocardiogram measuring unit that measures the electrocardiogram waveform of the person being measured through the first and second electrodes. In this bio-information measuring device, the second electrode is positioned spaced apart in the circumferential direction of the support member. The electrode support portion of the detection member, which is exposed on the inner circumference between the first and second bag portions, is positioned to limit the change in the contact state between the second electrode and the area to be measured, which occurs due to the movement of the support member accompanying the volume change of the first and second bag portions, to a predetermined range. Therefore, even if the support member moves outward due to the expansion of the first and second bag portions, the change in the contact state between the second electrode and the second area is limited to a predetermined range, allowing for stable measurement of the electrocardiogram waveform without interfering with blood pressure measurement. Thus, stable measurement of blood pressure and electrocardiogram waveform can be achieved with a simple and easy-to-manufacture configuration.

[0016] Also, in the present invention, it has a third electrode that contacts a third part of the subject different from the first part and the second part and sets a reference potential. The third electrode is supported by an extension of the support member extending to the opposite side of the first end from the second end of the second bag portion on the opposite side of the first end. It may be arranged at a position separated from the second end of the second bag portion by a third predetermined distance, and at a position where a change in the contact state between the third electrode and the third part due to the movement of the extension portion accompanying the volume change of the second bag portion can be limited within a predetermined range.

[0017] According to this, when the biological information measuring device measures the electrocardiogram waveform of the subject through the first electrode and the second electrode, it further includes a third electrode for setting a reference potential, so that the electrocardiogram waveform can be measured more accurately. Further, this third electrode is supported by an extension of the support member extending to the opposite side of the first end from the second end of the second bag portion on the opposite side of the first end, and is at a position separated from the second end of the second bag portion by a third predetermined distance, and at a position where a change in the contact state between the third electrode and the third part due to the movement of the extension portion accompanying the volume change of the second bag portion can be limited within a predetermined range. Therefore, even if the support member moves to the outer diameter side as the second bag portion expands, the change in the contact state between the third electrode and the third part is limited within a predetermined range, the electrocardiogram waveform can be measured stably, and blood pressure measurement is not inhibited. Thus, with a simple configuration that is easy to manufacture, stable measurement of blood pressure and electrocardiogram waveform can be realized.

[0018] Also, in the present invention, it has a third electrode that contacts a third part of the subject different from the first part and the second part and sets a reference potential. The third electrode may be supported by the electrode support portion and arranged at the same position as the second electrode in the circumferential direction and at a position aligned with the second electrode in a direction orthogonal to the circumferential direction with respect to the first bag portion and the second bag portion.

[0019] According to this, when the biological information measuring device measures the electrocardiogram waveform of the subject through the first electrode and the second electrode, it further includes a third electrode for setting a reference potential, so that the electrocardiogram waveform can be measured more accurately. In addition, this third electrode is supported by the electrode support portion and is arranged at the same position as the second electrode in the circumferential direction with respect to the first bag portion and the second bag portion, and at a position aligned in a direction orthogonal to the circumferential direction with respect to the second electrode. Therefore, even if the support member moves to the outer diameter side as the first bag portion and the second bag portion expand, the change in the contact state between the third electrode and the third site is limited within a predetermined range, and the electrocardiogram waveform can be measured stably without inhibiting blood pressure measurement. Thus, it is possible to realize stable measurement of blood pressure and electrocardiogram waveform with a simple structure that is easy to manufacture.

[0020] Further, in the present invention, it includes a fourth electrode that contacts a fourth site of the subject different from the first site and the second site. The electrocardiogram measurement unit measures the electrocardiogram waveform of the subject through the first electrode, the second electrode, and the fourth electrode. The fluid bag is arranged on the circumferential direction of the support member, separated from the second bag portion on the side opposite to the first bag portion, and further includes a third bag portion communicating with the second bag portion. The fourth electrode is supported by a second electrode support portion that is the support member exposed on the inner peripheral side between the second bag portion and the third bag portion, separated by a fourth predetermined distance from the second end portion on the fourth electrode side of the second bag portion, and separated by a fifth predetermined distance from the first end portion on the fourth electrode side of the third bag portion, and is arranged at a position where the change in the contact state between the fourth electrode and the fourth site due to the movement of the second electrode support portion accompanying the volume change of the second bag portion and the third bag portion can be limited within a predetermined range.

[0021] ​In this way, the fourth electrode, used for measuring the electrocardiogram waveform along with the first and second electrodes, is supported by the second electrode support portion of a support member that is exposed on the inner circumference between the second and third bags, which are located circumferentially on the opposite side of the first bag relative to the second bag. The support member is positioned at a location four predetermined distances from the second end of the second bag on the fourth electrode side and five predetermined distances from the first end of the third bag on the fourth electrode side, in a position that limits the change in the contact state between the fourth electrode and the fourth part due to the movement of the second electrode support portion accompanying the volume change of the second and third bags to a predetermined range. Therefore, even if the support member including the second electrode support portion moves outward due to the expansion of the second and third bags, the change in the contact state between the fourth electrode and the fourth part is limited to a predetermined range, and the electrocardiogram waveform can be measured stably. Furthermore, this bio-information measuring device does not interfere with blood pressure measurement, so it is possible to achieve stable measurement of blood pressure and electrocardiogram waveform with a simple and easy-to-manufacture configuration.

[0022] Furthermore, in the present invention, the aforementioned fourth electrode may be electrically connected to the second electrode.

[0023] In this way, the electrical connection between the second and fourth electrodes effectively increases the contact area of ​​the second electrode with the measurement site of the person being measured, thus enabling more stable electrocardiogram measurements.

[0024] Furthermore, in the present invention, the fourth electrode is not electrically connected to the second electrode. The electrocardiogram measurement unit may measure the electrocardiogram waveform based on either a first potential difference detected by the first electrode and the second electrode, or a second potential difference detected by the first electrode and the fourth electrode.

[0025] According to this method, if there is a difference in the quality of the electrocardiogram waveform measured based on the first potential difference and the quality of the electrocardiogram waveform measured based on the second potential difference, or if there is a difference in the contact resistance between the first and second electrode set and the first and fourth electrode set, it is possible to select the potential difference of the set with the best performance and measure the electrocardiogram waveform, thereby enabling more accurate electrocardiogram waveform measurement.

[0026] Furthermore, in the present invention, a third electrode that contacts a third part of the person being measured, which is different from the first part, the second part, and the fourth part, and sets a reference potential, A fifth electrode, which is in contact with the fifth part of the person being measured and is different from any of the first, second, third, and fourth parts, and is electrically connected to the third electrode, It has, The third electrode is supported by the electrode support portion and is positioned in the same circumferential position as the second electrode with respect to the first and second bag portions, and in a direction perpendicular to the circumferential direction with respect to the second electrode. The fifth electrode may be supported by the second electrode support portion and positioned in the same location as the fourth electrode in the circumferential direction relative to the second and third bag portions, and aligned with the fourth electrode in a direction perpendicular to the circumferential direction.

[0027] According to this, the bio-information measuring device further includes a third and fifth electrode for setting a reference potential when measuring the electrocardiogram waveform of the subject through the first, second, and fourth electrodes, thereby enabling more accurate measurement of the electrocardiogram waveform. Furthermore, this third electrode is an electrode support The fifth electrode is supported by the second electrode support and positioned circumferentially at the same position as the second electrode relative to the first and second bag sections, and aligned perpendicular to the circumferential direction relative to the second electrode. Therefore, even if the support member including the detection support moves outward due to the expansion of the first and second bag sections, the change in the contact state between the third electrode and the third part is limited to a predetermined range. Furthermore, the fifth electrode is supported by the second electrode support and positioned circumferentially at the same position as the fourth electrode relative to the second and third bag sections, and aligned perpendicular to the circumferential direction relative to the fourth electrode. Therefore, even if the support member including the second electrode support moves outward due to the expansion of the second and third bag sections, the change in the contact state between the fifth electrode and the fifth part is limited to a predetermined range. Consequently, the electrocardiogram waveform can be measured stably without interfering with blood pressure measurement, enabling stable measurement of blood pressure and electrocardiogram waveform with a simple and easy-to-manufacture configuration.

[0028] Furthermore, in the present invention, the support member is a curler that curves in accordance with the circumferential direction of the part of the person being measured. The belt portion may be wrapped around the outer circumference of the curler.

[0029] In this way, a fluid bag or the like is placed on the inner circumference of a curler that is curved to conform to the circumferential direction of the area being measured, and the belt is wrapped around the outer circumference of the curler, allowing the biometric information measuring device to be easily and reliably attached to the area being measured in the appropriate position.

[0030] Furthermore, in the present invention, the curler may be joined to the belt portion.

[0031] By attaching the belt portion to the curler in this way, the biometric information measuring device can be easily attached.

[0032] Furthermore, in the present invention, the support member may constitute a part of the belt portion.

[0033] In this way, by having the support member constitute part of the belt section, and the belt section also serving as the support member, the configuration of the biological information measuring device can be simplified, and handling becomes easier. [Effects of the Invention]

[0034] According to the present invention, a biological information measuring device is available that can measure blood pressure and other biological information stably with a simple configuration. [Brief explanation of the drawing]

[0035] [Figure 1] Figure 1 shows the external appearance of the biological information measuring device according to Example 1. [Figure 2] Figure 2 shows the appearance of the biological information measuring device according to Example 1 when it is attached. [Figure 3]Figure 3 is a functional block diagram of the biological information measuring device according to Example 1. [Figure 4] Figures 4(A) and 4(B) show the usage status of the biological information measuring device according to Example 1. [Figure 5] Figures 5(A) and 5(B) are a side view and a rear view of the biological information measuring device according to Example 1. [Figure 6] Figures 6(A) and 6(B) are a side view and a rear view of the biological information measuring device according to Example 1. [Figure 7] Figures 7(A) and 7(B) are a side view and a rear view of a biological information measuring device according to a modified example of Example 1. [Figure 8] Figures 8(A) and 8(B) are a side view and a rear view of the biometric information measuring device according to Example 2. [Figure 9] Figure 9 is a functional block diagram of the biological information measuring device according to Example 2. [Figure 10] Figure 10 is a functional block diagram of a biological information measuring device according to a modified example of Example 2. [Modes for carrying out the invention]

[0036] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

[0037] <Example 1> An example of an embodiment of the present invention is described below. However, unless otherwise specified, the dimensions, materials, shapes, and relative arrangements of the components described in this embodiment are not intended to limit the scope of the present invention to those specifications only.

[0038] (Overall configuration of the device) Figures 1 and 2 are schematic diagrams showing the external configuration of the biological information measuring device 1 according to this embodiment. Figure 3 is a functional block diagram showing the functional configuration of the biological information measuring device 1 according to this embodiment.

[0039] As shown in Figures 1 to 3, the biometric information measuring device 1 generally consists of a main body 100, a cuff assembly 200, and a belt 400, and can measure blood pressure and electrocardiogram waveforms while worn on the wrist of the person being measured. The belt 400 is equipped with a hook-and-loop fastener 411. The main body 100 is provided with a belt loop 150, which has an annular belt loop for inserting the belt 400. When wearing the biometric information measuring device 1, the belt 400 is wrapped around the wrist and inserted into the belt loop 150, and the hook-and-loop fastener 411 is attached to any position on the belt 400 (where the loop into which the hook engages is formed) to secure it. Furthermore, the bio-information measuring device 1 has an FPC (Flexible Printed Circuits) 300 (not shown in Figures 1 and 2) on which wiring for electrically connecting the electrocardiogram measuring unit 130 of the main body 100 and the second electrode 241 and third electrode 242 of the cuff assembly 200 is arranged. Here, the wrist corresponds to the measurement site of the present invention. In the bio-information measuring device 1 shown in Figure 1, a band-shaped belt portion 400 is wrapped around the outer circumference of a pre-formed C-shaped curler 210, but the belt portion 400 may be joined to the outer circumference of the C-shaped curler 210 and integrated. By joining the belt portion 400 to the curler 210 in this way, the operation of attaching the curler 210 also serves as the operation of wrapping a part of the belt portion 400, making it easier to attach the bio-information measuring device 1.

[0040] As shown in Figure 3, the main unit 100 comprises a housing 101, a power supply unit 110, a display unit 111, an operation unit 112, a blood pressure measurement unit 120, an electrocardiogram measurement unit 130, and a first electrode 140. Here, the first electrode 140 includes the entire housing 101 of the main unit 100 and the operation buttons 1121 and 1122. The configuration of the first electrode 140 is not limited to this, and it may be part of the housing 101 or have a structure independent of the housing 101. Here, the blood pressure measurement unit 120 corresponds to the blood pressure measurement unit of the present invention, the electrocardiogram measurement unit 130 corresponds to the electrocardiogram measurement unit and biological information measurement unit of the present invention, and the first electrode 140 corresponds to the first electrode of the present invention.

[0041] The power supply unit 110 includes a battery that supplies the power necessary for the operation of the device. The battery may be a secondary battery such as a lithium-ion battery, or it may be a primary battery.

[0042] The display unit 111 includes a display device such as a liquid crystal display and may also be equipped with LED indicators. Specifically, the operation unit 112 includes operation buttons 1121 and 1122 located on the side of the housing 101 of the main unit 100. The display unit 111 and the operation unit 112 may be integrated into a single configuration, such as a touch panel display.

[0043] The blood pressure measurement unit 120 is a functional unit that controls the cuff assembly unit 200 (described later) and measures the user's blood pressure based on the information obtained therefrom. It includes a control unit 121, a calculation unit 122, a pump 123, and an exhaust valve 124. The control unit 121 and the calculation unit 122 are composed of, for example, a CPU (Central Processing Unit) and may have a storage unit composed of RAM (Random Access Memory), although this is not shown in the figure. Here, the pump 123 and the exhaust valve 124 correspond to the pump and valve of the present invention, respectively.

[0044] The control unit 121 is a functional unit that controls the blood pressure measurement unit 120. It controls the cuff pressure of the cuff assembly unit 200 via the calculation unit 122, pump 123, etc., and acquires information for measuring the user's blood pressure from the artery in the wrist to which the biomedical information measuring device 1 is attached. The calculation unit 122 measures the blood pressure value based on the information thus acquired. The pump 123 and exhaust valve 124 communicate with the compression cuff 220 and sensing cuff 230, which will be described later, via the air passage 125, and are responsible for supplying and discharging air to the compression cuff 220 and sensing cuff 230.

[0045] The electrocardiogram measurement unit 130 is a functional unit that measures the user's electrocardiogram waveform based on the potential difference between the first electrode 140 and the second electrode 241 in contact with the surface of the human body, and includes a control unit 131 and a calculation unit 132. The control unit 131 and the calculation unit 132 are composed of the CPU and the like mentioned above. From a hardware standpoint, the control unit 131 and the calculation unit 132 may have the same configuration as the control unit 121 and the calculation unit 122 of the blood pressure measurement unit 120.

[0046] In addition to the CPU and RAM mentioned above, both the blood pressure measurement unit 120 and the electrocardiogram measurement unit 130 include AD conversion circuits, amplifiers, filters, etc., which are not shown in the diagram. However, since these are composed of known technologies, their explanation will be omitted.

[0047] The cuff assembly 200 comprises a collar 210, a compression cuff 220, a sensing cuff 230, a second electrode 241, a third electrode 242, and a back plate 250. The collar 210 is a base member for holding the compression cuff 220. The cuff assembly 200 is constructed by stacking the collar 210 on the outside, followed by the compression cuff 220, the back plate 250, and the sensing cuff 230. Here, the collar 210 corresponds to the support member of the present invention, and the compression cuff 220 (and sensing cuff 230) corresponds to the fluid bag of the present invention. The second electrode 241 corresponds to the detection unit and second electrode of the present invention. The third electrode 242 corresponds to the third electrode of the present invention.

[0048] The compression cuff 220 inflates with air supplied from the pump 123, constricting the wrist T where it is attached and applying external pressure to the arteries (not shown) present in the wrist T. The sensing cuff 230 (see Figures 6(A) and 6(B)) is a fluid bag for detecting the pressure applied to the area compressed by the compression cuff 220. The pressure applied to the compressed area is measured by detecting the internal pressure of the sensing cuff 230 with a small amount of air inside using a pressure gauge (not shown). The back plate 250 (see Figures 6(A) and 6(B)) is a flexible, flat plate-shaped member positioned between the compression cuff 220 and the sensing cuff 230. It suppresses excessive bending of the sensing cuff 230 when compressed by the compression cuff 220 and equalizes the pressure distribution within the sensing cuff 230. Here, air corresponds to the fluid of the present invention.

[0049] The second electrode 241 and the third electrode 242 are both electrodes positioned to be in contact with the surface of the human body. The second electrode 241 functions as an electrode for measuring electrocardiogram waveforms, and the third electrode 242 functions as a GND (ground) electrode for setting a reference potential.

[0050] (Structure of the cuff assembly) The structure of the cuff assembly 200 will be described based on Figures 4(A) and 4(B), which show the biometric information measuring device 1 attached to the user's wrist T. In this embodiment, a compression cuff 220 is provided along the extension direction (the direction around the wrist T) of a C-shaped curler 210 that curves in accordance with the circumferential direction of the wrist T. The curler 210 has a first curler portion 211 that extends circumferentially from the back side (opposite side from the display portion 111) of the main body portion 100 located on the back side of the wrist T, and a second curler portion 212 that is continuous with the first curler portion 211 and extends from the back side of the main body portion 100 to the opposite side of the circumferential direction from the first curler portion 211. The first curler portion 211 extends so as to cover the arterial side of the wrist T.

[0051] The compression cuff 220 includes a first compression cuff portion 221 and a second compression cuff portion 222 arranged along the circumferential direction. The arrangement of the curler 210, the compression cuff 220, the second electrode 241, and the third electrode 242 will be explained with reference to Figures 5(A) and 5(B). Figure 5(A) is a side view of the biomedical information measuring device 1 as seen from a direction perpendicular to the circumferential direction around which the curler 210 is wrapped. Figure 5(B) is a rear view of the biomedical information measuring device 1 as seen from the inner diameter side to the outer diameter side in the circumferential direction around which the curler 210 is wrapped, that is, from the opposite side of the display portion 111 of the main body portion 100. As shown in Figures 1, 2, 4(A), and 4(B), the curler 210 is formed in advance in a C-shape, but in Figures 5(A) and 5(B), the curler 210 is shown in an unfolded state in the circumferential direction, and the belt portion 400 provided on the outer circumference of the curler 210 is not shown. Here, the first compression cuff portion 221 and the second compression cuff portion 222 correspond to the first bag portion and the second bag portion of the present invention, respectively.

[0052] As shown in Figure 5(B), the first compression cuff portion 221 and the second compression cuff portion 222 are formed by a series of bag-shaped members connected by a connecting portion 224, each having a notch 223 formed by cutting out a part of the width direction (direction perpendicular to the circumferential direction) of the curler 210. Since the first compression cuff portion 221 and the second compression cuff portion 222 are connected by the connecting portion 224, they are maintained at the same pressure, and air is supplied to or discharged to both the first compression cuff portion 221 and the second compression cuff portion 222 by the control of the pump 123 and exhaust valve 124 described above.

[0053] The notch 223 of the compression cuff 220 creates an exposed portion 213 on the inner circumference of the curler 210. The second electrode 241 and the third electrode 242 are arranged on the inner circumference of this exposed portion 213. The second electrode 241 and the third electrode 242 are arranged side by side in the width direction of the exposed portion 213 of the curler 210. The second electrode 241 and the third electrode 242 are made of a conductive material such as stainless steel, having a substantially semicircular cross-section perpendicular to the circumferential direction and a shape obtained by dividing an oval into two in the circumferential direction, and are arranged at a predetermined interval in a direction perpendicular to the circumferential direction. A separator 260 made of an insulating material is placed between the second electrode 241 and the third electrode 242 (the separator 260 can be omitted). Here, the exposed portion 213 of the curler 210 corresponds to the detection unit support portion and electrode support portion of the present invention.

[0054] The second electrode 241 and the third electrode 242 are positioned at predetermined distances from the circumferential end 221a of the first compression cuff portion 221 on the notch 223 side and the circumferential end 222a of the second compression cuff portion 222 on the notch 223 side. The predetermined distances from the circumferential end 221a of the first compression cuff portion 221 on the notch 223 side and the circumferential end 222a of the second compression cuff portion 222 on the notch 223 side are distances that can limit the movement and posture changes of the second electrode 241 and the third electrode 242 to a predetermined range when the compression cuff 220 is inflated by supplying air, as will be described later. By positioning the second electrode 241 and the third electrode 242 at these positions on the exposed portion 213 of the curler 210, changes in the contact state between the second electrode 241 and the third electrode 242 and the wrist T are suppressed even when the compression cuff 220 is inflated. Here, the change in contact state refers to the contact position and contact angle between the second electrode 241 and the third electrode 242 and the wrist T. This refers to changes in contact conditions such as contact area. In this way, in the biological information measuring device 1, the second electrode 241 and the third electrode 242 are positioned between the first compression cuff portion 221 and the second compression cuff portion 222, which are arranged circumferentially on the inner circumference side of the curler 210. Here, the circumferential end portion 221a on the notched portion 223 side of the first compression cuff portion 221 corresponds to the first end portion on the detection portion side of the first bag portion of the present invention, and the predetermined distance at which the circumferential end portion 221a on the notched portion 223 side of the first compression cuff portion 221 is separated from the second electrode 241 and the third electrode 242 corresponds to the first predetermined distance of the present invention. Furthermore, the circumferential end portion 222a of the second compression cuff portion 222 on the notched portion 223 side corresponds to the first end portion on the detection portion side of the second bag portion of the present invention, and the predetermined distance at which the circumferential end portion 222a of the second compression cuff portion 222 on the notched portion 223 side separates from the second electrode 241 and the third electrode 242 corresponds to the second predetermined distance of the present invention.

[0055] Figures 6(A) and 6(B) are a side view and a rear view, respectively, of the bio-information measuring device 1 with the above-described configuration, including the sensing cuff 230 and back plate 250, which are positioned on the inner circumference side of the compression cuff 220. The device is configured with the collar 210 as the outermost layer, followed by the second compression cuff section 222, the back plate 250, and the sensing cuff 230. The sensing cuff 230 is connected to a flow path 230a that connects the pump 123 and exhaust valve 124 to the flow path 125 that communicates the compression cuff 220, allowing for the supply and discharge of air. The flow path 230a is positioned on the inner circumference side of the exposed portion 213 of the collar 210, with a connection portion 224, a second electrode 241, and a third electrode 242 sandwiched between them, and extends toward the main body 100. The sensing cuff 230 and back plate 250 are set to a size that, even when the compression cuff 220 and sensing cuff 230 expand during attachment of the biological information measuring device 1, will not extend beyond the circumferential end 222a on the notched portion 223 side of the second compression cuff portion 222 and interfere with the second electrode 241 and the third electrode 242. Although not shown in the diagram, covers are provided to cover the inner circumference of the first compression cuff portion 221, the second compression cuff portion 222, the sensing cuff 230, and the back plate 250, respectively.

[0056] Returning to Figures 4(A) and 4(B), the operation of the biometric information measuring device 1 attached to the user's wrist T will be explained. Figure 4(A) shows the state before the compression cuff 220 is inflated, with the belt portion 400 wrapped around the wrist T on the outer circumference side of the curler 210, the belt loop portion 150 inserted, and secured with the hook-and-loop fastener 411. Figure 4(B) shows the state after the compression cuff 220 has been inflated. In this way, with the circumferential length restricted by the belt portion 400 wrapped around the wrist T, when the compression cuff 220, which is positioned on the inner circumference side, is inflated, both the first compression cuff portion 221 covering the arterial side of the wrist T and the second compression cuff portion 222 covering the back of the wrist T inflate. As a result, the C-shaped curler 210 expands in the direction of the back of the wrist T indicated by arrow D1 and in the direction of the artery indicated by arrow D2, and deforms to narrow towards the inner circumference in the width direction of the wrist T perpendicular to arrows D1 and D2, as indicated by arrows D3 and D4. As the compression cuff 220 expands, the curler 210 deforms in this way, and a pressing force acts from the curler 210 toward the wrist T on the second electrode 241 and the third electrode 242, which are positioned on the exposed portion 213 exposed to the wrist T side by the notch 223 between the first compression cuff portion 221 and the second compression cuff portion 222 in the circumferential direction. Therefore, even when the compression cuff 220 expands, the second electrode 241 and the third electrode 242 can be kept in stable contact with the wrist T, and changes in the contact state between the second electrode 241 and the third electrode 242 and the wrist T can be suppressed. In addition, blood pressure measurement is not interfered with by the measurement of the electrocardiogram waveform. Here, the expansion of the compression cuff 220 corresponds to the volume change of the fluid bag of the present invention.

[0057] The shapes of the second electrode 241 and the third electrode 242 are not limited to a semicircular shape in the direction perpendicular to the circumferential direction, as shown in Figures 4(A) and 4(B). They may also be semi-elliptical, semi-long oval, or other curved shapes such as a curve that is convex toward the wrist T.

[0058] (Measurement of biological information) To measure biological information using the biological information measuring device 1 having the above configuration, first, with the main body 100 facing the back of the hand, the cuff assembly 200 and belt 400 are wrapped around the wrist T. Then, the belt 400 is passed through the belt loop 150 and folded back, and the hook-and-loop fastener 411 of the belt 400 is attached to any position on the belt 400 to attach the biological information measuring device 1 to the wrist T. At this time, the sensing cuff 230 is attached so that it is positioned on the palm side of the wrist T.

[0059] Then, the measurement is started by operating the operation button 1121 (or 1122). Specifically, air is injected into the compression cuff 220 to inflate it, compressing the T (artery) in the wrist, temporarily stopping blood flow by occluding the artery, and then the air is gradually released from the compression cuff 220 to deflate it, releasing the compression and restoring blood flow to the artery. The pressure at this time is measured by the sensing cuff 230. In other words, blood pressure measurement is performed using the so-called oscillometric method.

[0060] Furthermore, when the wrist T is compressed by the compression cuff 220 during the blood pressure measurement described above, the second electrode 241 and the third electrode 242 are in contact with (pressed against) the surface T1 and T2 of the wrist T (see Figure 5(A)). Therefore, by touching the first electrode 140 provided on the housing 101 of the main unit 100 with the fingers of the hand that is not wearing the biometric information measuring device 1, the electrocardiogram waveform can be measured using the so-called lead I method based on the potential difference between the first electrode 140 and the second electrode 241. Here, the fingers of the hand that is not wearing the biometric information measuring device 1 correspond to the first part of the present invention, and the surface T1 and T2 of the wrist T correspond to the second and third parts of the present invention, respectively.

[0061] As described above, the bio-information measuring device 1 according to this embodiment is a portable device that is worn on the wrist T, has an easy-to-manufacture configuration, and is capable of simultaneously measuring blood pressure values ​​and electrocardiogram waveforms with high accuracy.

[0062] (Variation 1) As a biological information measuring device 1 according to Example 1, a device that measures electrocardiogram waveforms as biological information along with blood pressure has been described, but the biological information is not limited to this. By placing a photoelectric volume plethysmography sensor (PPG sensor) in place of the second electrode 241 and the third electrode 242 on the exposed portion 213 of the collar 210 on which the above-mentioned second electrode 241 and third electrode 242 are arranged, a biological information measuring device can be configured that measures pulse waves or information based on pulse waves as biological information along with blood pressure measurement. With such a biological information measuring device, changes in the contact state of the PPG sensor with the measurement site due to the expansion of the compression cuff 220 can be suppressed, and blood pressure measurement is not interfered with by the measurement of electrocardiogram waveforms. A portable device of the type that is worn on the wrist T has an easy-to-manufacture configuration and can accurately measure blood pressure values ​​and pulse waves simultaneously. Here, the photoelectric volume plethysmography sensor corresponds to the detection unit of the present invention, and the pulse wave or information based on pulse waves corresponds to the biological information of the present invention. Furthermore, by placing an arterial blood oxygen saturation sensor (SpO2 sensor) on the exposed portion 213 of the collar 210 where the second electrode 241 and third electrode 242 described above are arranged, a bio-information measuring device can be configured that measures arterial blood oxygen saturation, or information based on arterial blood oxygen saturation, as bio-information along with blood pressure measurement. With such a bio-information measuring device, changes in the contact state of the SpO2 sensor with the measurement site due to the expansion of the compression cuff 220 can be suppressed, and blood pressure measurement is not interfered with by the measurement of the electrocardiogram waveform. It is a portable device that is worn on the wrist, has an easy-to-manufacture configuration, and can accurately measure blood pressure and arterial blood oxygen saturation simultaneously. Here, the arterial blood oxygen saturation sensor corresponds to the detection unit of the present invention, and arterial blood oxygen saturation, or information based on arterial blood oxygen saturation, corresponds to the bio-information of the present invention.

[0063] (Modification 2) Figures 7(A) and 7(B) show a modified biological information measuring device 11 of the biological information measuring device 1 according to Example 1. Similar components to those in the biological information measuring device 1 according to Example 1 are used, and detailed explanations are omitted. In the biological information measuring device 11, the second electrode 241 and the third electrode 242 are positioned at different circumferential positions relative to the curler 210. Similar to the biological information measuring device 1, the second electrode 241 is positioned on the exposed portion 213 of the curler 210 formed by the notch 223 provided between the first compression cuff portion 221 and the second compression cuff portion 222. In the biological information measuring device 11 as well, the second electrode 241 is positioned at a predetermined distance from the circumferential end 221a of the first compression cuff portion 221 on the notch 223 side and from the circumferential end 222a of the second compression cuff portion 222 on the notch 223 side.

[0064] In the biomedical information measuring device 11, the curler 210 has an extension 214 that extends from the circumferential end 222b of the second compression cuff portion 222, which is on the opposite side of the main body portion 100, that is, the side opposite to the circumferential end 222a of the second compression cuff portion 222. No compression cuff 220 or the like is positioned on the inner circumference side of the extension 214, and the extension 214 of the curler 210 is exposed on the inner circumference side. In the biomedical information measuring device 11, a third electrode 242 is positioned on the inner circumference side of this extension 214. The third electrode 242 is positioned at a predetermined distance from the circumferential end 222b of the second compression cuff portion 222. The predetermined distance from the circumferential end 222b of the second compression cuff portion 222 is a distance that can limit the movement and posture change of the third electrode 242 to a predetermined range when air is supplied to the compression cuff 220 and it is inflated. By positioning the third electrode 242 at this location on the extension 214 of the collar 210, changes in the contact state between the third electrode 242 and the wrist T are suppressed even when the compression cuff 220 is inflated. Furthermore, blood pressure measurement is not interfered with by the measurement of the electrocardiogram waveform. Here, the circumferential end 222b of the second compression cuff portion 222 corresponds to the second end of the second bag portion of the present invention, and the extension 214 corresponds to the extension portion of the present invention. Also, a predetermined distance at which the third electrode 242 is separated from the circumferential end 222b of the second compression cuff portion 222 corresponds to the third predetermined distance of the present invention. In the biometric information measuring device 11, the third electrode 242 is positioned on the extension portion 214, which is the circumferential end of the curler 210. However, as shown in Figures 4(A) and 4(B), when the biometric information measuring device 11 is attached to the user's wrist T, the belt portion 400 is wrapped around the outer circumference of the curler 210, so a force acting on the third electrode 242 is also applied inward toward the wrist T. Thus, even if the second electrode 241 and the third electrode 242 are positioned at different circumferential positions on the curler 210, it becomes possible to accurately measure blood pressure and electrocardiogram waveforms simultaneously in a portable device that is worn on the wrist, with a configuration that is easy to manufacture.

[0065] (Variation 3) In the above-described embodiment 1, the biological information measuring device 1 was described as comprising a sensing cuff 230 and a back plate 250, and performing blood pressure measurement by the oscillometric method. However, the method of blood pressure measurement is not limited to this, and it is also possible to configure the device to perform blood pressure measurement by detecting Korotkoff sounds using a microphone or the like. When blood pressure is measured using this method, the biological information measuring device 1 is configured to include a compression cuff 220, a second electrode 241, and a third electrode 242, as shown in Figures 5(A) and 5(B), but does not include a sensing cuff 230 or a back plate 250. In the bio-information measuring device 1 according to this modified example 3, similarly, even when the compression cuff 220 is inflated, the second electrode 241 and the third electrode 242 can be stably brought into contact with the wrist T, and changes in the contact state between the second electrode 241 and the third electrode 242 and the wrist T can be suppressed. Furthermore, blood pressure measurement is not interfered with by the measurement of the electrocardiogram waveform, and the bio-information measuring device 1 according to modified example 3 makes it possible to accurately measure blood pressure values ​​and electrocardiogram waveforms simultaneously with a configuration that is easy to manufacture.

[0066] <Example 2> The following describes a biological information measuring device 12 according to Embodiment 2 of the present invention with reference to the drawings. Components similar to those in the biological information measuring device 1 according to Embodiment 1 are referred to with the same reference numerals, and detailed descriptions are omitted.

[0067] Figure 8(A) is a side view of the curler 210 of the biological information measuring device 12 unfolded in the circumferential direction, and Figure 8(B) is a rear view of the biological information measuring device 12. In Figures 8(A) and 8(B), the belt portion 400 and the cover are omitted from the illustration, as in Figure 5, etc.

[0068] In the biological information measuring device 12, the compression cuff 220 includes a first compression cuff portion 221, a second compression cuff portion 222, and a third compression cuff portion 225. The compression cuff 220 has a notch 223 formed by cutting out a portion in the width direction between the first compression cuff portion 221 and the second compression cuff portion 222 in the circumferential direction, and a notch 226 formed by cutting out a position in the width direction between the second compression cuff portion 222 and the third compression cuff portion 225 in the circumferential direction. The second compression cuff portion 222 and the third compression cuff portion 225 are formed by a series of bag-shaped members connected by a connecting portion 227. Therefore, the first compression cuff portion 221, the second compression cuff portion 222, and the third compression cuff portion 225 are configured as a series of bag-shaped members connected by connecting portions 224 and 227, and are maintained at the same pressure. Air is supplied to or discharged from all three of the first compression cuff portion 221, the second compression cuff portion 222, and the third compression cuff portion 225 by the control of the pump 123 and exhaust valve 124 described above. Here, the third compression cuff portion 225 corresponds to the third bag portion of the present invention.

[0069] The notch 226 of the compression cuff 220 creates an exposed portion 215 on the collar 210, similar to the exposed portion 213. The second electrode (2) 241b and the third electrode (2) 242b are arranged side by side in the width direction on the exposed portion 215. To distinguish them, in this embodiment, the electrodes arranged in the exposed portion 213 between the first compression cuff portion 221 and the second compression cuff portion 222 are referred to as the second electrode (1) 241a and the third electrode (1) 242a, and the separator arranged between them is referred to as the separator 260a. The second electrode (2) 241b and the third electrode (2) 242b contact different parts of the surface T1 and T2 of the wrist T, respectively, with which the second electrode (1) 241a and the third electrode (1) 242a contact. The second electrode (2) 241b and the third electrode (2) 242b are made of a conductive material such as stainless steel, having a substantially semicircular cross-section perpendicular to the circumferential direction and a shape obtained by dividing an oval into two in the circumferential direction, respectively, and are arranged at a predetermined interval in a direction perpendicular to the circumferential direction. A separator 260b made of an insulating material is placed between the second electrode (1) 241a and the third electrode (2) 242b (the separator 260b may be omitted). Here, the exposed portion 215 corresponds to the second electrode support portion of the present invention. Furthermore, the second electrode (2) 241b and the third electrode (2) 242b correspond to the fourth electrode and the fifth electrode of the present invention, respectively, and the portions of the user's wrist T surface that the second electrode (2) 241b and the third electrode (2) 242b contact correspond to the fourth portion and the fifth portion of the present invention, respectively. The shapes of the second electrode (1) 241a, the second electrode (2) 241b, the third electrode (1) 242a, and the third electrode (2) 242b are not limited to a semicircular shape in the direction perpendicular to the circumferential direction as shown in Figure 8, but may also be semi-elliptical, semi-long oval, or other curved shapes such as a curve that is convex toward the wrist T.

[0070] The second electrode (2) 241b and the third electrode (2) 242b are positioned at predetermined distances from the circumferential end 222c of the second compression cuff portion 222 on the notch 226 side and the circumferential end 225a of the third compression cuff portion 225 on the notch 226 side. The predetermined distances from the circumferential end 222c of the second compression cuff portion 222 on the notch 226 side and the circumferential end 225a of the third compression cuff portion 225 on the notch 226 side are distances that can restrict the movement and posture changes of the second electrode (2) 241b and the third electrode (2) 242b to a predetermined range when air is supplied to the compression cuff 220 and it is inflated. By positioning the second electrode (2) 241b and the third electrode (2) 242b in the same location, changes in the contact state between the second electrode (2) 241b and the third electrode (2) 242b and the wrist T are suppressed even when the compression cuff 220 is inflated. Here, changes in the contact state refer to changes in the contact position, contact angle, contact area, etc., between the second electrode (2) 241b and the third electrode (2) 242b and the wrist T. Thus, in the biomedical information measuring device 12, the second electrode (1) 241a and the third electrode (1) 242a are positioned between the first compression cuff portion 221 and the second compression cuff portion 222, which are arranged circumferentially on the inner circumference side of the curler 210, and similarly, the second electrode (2) 241b and the third electrode (2) 242b are positioned between the second compression cuff portion 222 and the third compression cuff portion 225, which are arranged circumferentially. As the compression cuff 220 expands, the curler 210 deforms as shown in Figure 4(B). This causes a pressing force to act from the curler 210 toward the wrist T on the second electrode (1) 241a and the third electrode (1) 242a, which are positioned on the exposed portion 213 exposed to the wrist T side by the notch 223 between the first compression cuff portion 221 and the second compression cuff portion 222 in the circumferential direction, and on the second electrode (2) 241b and the third electrode (2) 242b, which are positioned on the exposed portion 215 exposed to the wrist T side by the notch 226 between the second compression cuff portion 222 and the third compression cuff portion 225 in the circumferential direction. Therefore, even when the compression cuff 220 is inflated, the second electrode (1) 241a, the second electrode (2) 241b, the third electrode (1) 242a, and the third electrode (2) 242b can be stably brought into contact with the wrist T, and changes in the contact state between the second electrode (1) 241a, the second electrode (2) 241b, the third electrode (1) 242a, and the third electrode (2) 242b and the wrist T can be suppressed. Furthermore, blood pressure measurement is not interfered with by the measurement of the electrocardiogram waveform. Here, the circumferential end 222c on the notched portion 226 side of the second compression cuff portion 222 corresponds to the second end on the fourth electrode side of the second bag portion of the present invention, and the circumferential end 225a on the notched portion 226 side of the third compression cuff portion 225 corresponds to the first end on the fourth electrode side of the third bag portion of the present invention.Furthermore, predetermined distances at which the second electrode (2) 241b is separated from the circumferential end portion 222c of the second compression cuff portion 222 on the notched portion 226 side and the circumferential end portion 225a of the third compression cuff portion 225 on the notched portion 226 side correspond to the fourth predetermined distance and the fifth predetermined distance of the present invention.

[0071] Similar to the biological information measuring device 1 according to Example 1, the second compression cuff portion 222, the back plate 251, and the first sensing cuff portion 231 are stacked in order on the inner circumference side of the second compression cuff portion 222, with the collar 210 being the outermost layer. Similarly, the third compression cuff portion 225, the back plate 252, and the second sensing cuff portion 232 are stacked in order on the inner circumference side of the third compression cuff portion 225, with the collar 210 being the outermost layer. The first sensing cuff portion 231 and the second sensing cuff portion 232 are configured as a series of bag-shaped members connected by a connecting portion 232a and communicate with the flow path 230a. Here, the first sensing cuff portion 231 and the second sensing cuff portion 232 together function as a sensing cuff 230. The first sensing cuff portion 231 and the back plate 251 are set to be such that, even when the second compression cuff portion 222 and the first sensing cuff portion 231 expand when the biological information measuring device 12 is attached, they do not interfere with the second electrode (1) 241a and the third electrode (1) 242a beyond the circumferential end 222a on the notch portion 223 side of the second compression cuff portion 222, nor do they interfere with the second electrode (2) 241b and the third electrode (2) 242b beyond the circumferential end 222c on the notch portion 226 side of the second compression cuff portion 222. Similarly, the second sensing cuff portion 232 and the back plate 252 are set to a size that, even when the third compression cuff portion 225 and the second sensing cuff portion 232 expand when the biometric information measuring device 12 is attached, will not interfere with the second electrode (2) 241b and the third electrode (2) 242b beyond the circumferential end 225a on the notched portion 226 side of the third compression cuff portion 225.

[0072] Figure 9 is a functional block diagram showing the functional configuration of the biological information measurement device 12. The configuration, which is the same as that of the biological information measurement device 1, will not be explained. Here, the second electrode (1) 241a and the second electrode 241(2) 241b are electrically connected to each other and input to the electrocardiogram measurement unit 130 via the FPC 300. Also, the third electrode 242(1) 242a and the third electrode (2) 242b are electrically connected to each other. Therefore, the two second electrodes (1) 241a and the second The measurement of the electrocardiogram waveform using electrodes 241(2)241b and the two third electrodes 242(1)242a and third electrode (2)242b is performed in the same manner as the biomedical information measuring device 1 according to Example 1. Since the second electrode (1)241a and the second electrode 241(2)241b are electrically connected to each other, the contact area of ​​the second electrode is substantially increased, enabling more stable measurement of the electrocardiogram waveform. As mentioned above, this portable device, worn on the wrist, has an easy-to-manufacture design and allows for accurate simultaneous measurement of blood pressure and electrocardiogram waveforms.

[0073] (modified version) Figure 10 is a functional block diagram showing the functional configuration of a biological information measuring device 13, which is a modified version of the biological information measuring device 12. The configuration of the biological information measuring device 13 is the same as that of the biological information measuring device 12 shown in Figure 7, except that the method of connecting the second electrode (1) 241a and the second electrode (2) 241b is different. In the biological information measuring device 13, the second electrode (1) 241a and the second electrode (2) 241b are not connected to each other and are input to the electrocardiogram measurement unit 130 via the FPC 300 independently. The third electrode (1) 242a and the third electrode (2) 242b are electrically connected to each other. Therefore, in the bio-information measuring device 13, the electrocardiogram measuring unit 130 can acquire an electrocardiogram waveform (1) recorded from the potential difference between the first electrode 140 and the second electrode (1) 241a, and an electrocardiogram waveform (2) recorded from the potential difference between the first electrode 140 and the second electrode (2) 241b. Since the device can select and store the waveform with better waveform quality or lower contact resistance, it becomes possible to measure the electrocardiogram waveform with greater accuracy. Here, the potential difference between the first electrode 140 and the second electrode (1) 241a corresponds to the first potential difference of the present invention, and the potential difference between the first electrode 140 and the second electrode (2) 241b corresponds to the second potential difference of the present invention.

[0074] <Example 3> In Examples 1 and 2, the first compression cuff portion 221, the second compression cuff portion 222, the third compression cuff portion 225, and the second electrode 241 (241a, 241b), the third electrode 242 (242a, 242b), etc., are arranged on the inner circumference side of the curler 210, which is provided independently of the belt portion 400. However, the curler 210 may be omitted, and the components that would normally be arranged on the inner circumference side of the curler 210 may be arranged on the inner circumference side of the belt portion 400.

[0075] In this configuration, corresponding to Embodiment 1, the first compression cuff portion 221, the second compression cuff portion 222, the second electrode 241 and the third electrode 242 are arranged on the inner circumference side of the belt portion 400, or the first compression cuff portion 221, the second compression cuff portion 222, the back plate 250, the sensing cuff 230, the second electrode 241 and the third electrode 242 are arranged on the inner circumference side of the belt portion 400. The relative positional relationship of each component arranged on the inner circumference side of the belt portion 400 is the same as that of the bio-information measuring device 1 in Embodiment 1, which is arranged on the inner circumference side of the curler 210. In the configuration corresponding to Modification 1 of Example 1, a PPG sensor or an SpO2 sensor is placed on the inner circumference side of the belt portion 400 in place of the second electrode 241 and the third electrode 242. Furthermore, the configuration corresponding to Modification 2 of Example 1 is the same as the configuration corresponding to Example 1 described above, except that the second electrode 241 and the third electrode 242 are arranged at different positions in the circumferential direction of the belt portion 400. Furthermore, in the configuration corresponding to Modification 3 of Example 1, similar to Example 1, the first compression cuff portion 221, the second compression cuff portion 222, the second electrode 241, and the third electrode 242 are arranged on the inner circumference side of the belt portion 400, and a microphone for detecting Korotkoff sounds is also arranged.

[0076] In the configuration corresponding to Example 2, the inner circumference of the belt portion 400 is provided with a first compression cuff portion 221, a second compression cuff portion 222, a third compression cuff portion 225, a second electrode (1) 241a, a third electrode 242(1) 242a, a second electrode (2) 241b, a third electrode (2) 242b, or the inner circumference of the belt portion 400 is provided with a first compression cuff portion 221, a second compression cuff portion 222, a back plate 251, and a first sensor The single cuff portion 231, the third compression cuff portion 225, the back plate 252, the second sensing cuff portion 232, the second electrode (1) 241a, the third electrode 242(1) 242a, the second electrode (2) 241b, and the third electrode (2) 242b are arranged accordingly. The relative positional relationship of each component arranged on the inner circumference side of the belt portion 400 is the same as that of the bio-information measuring device 1 of Embodiment 2, which is arranged on the inner circumference side of the curler 210.

[0077] In this way, by omitting the curler 210 and arranging the first compression cuff portion 221, the second compression cuff portion 222, the second electrode 241 (241a, 241b), the third electrode 242 (242a, 242b), or a PPG sensor, SpO2 sensor, etc., on the inner circumference side of the belt portion 400, the configuration of the biological information measuring device can be simplified and handling becomes easier. [Explanation of Symbols]

[0078] 1, 11, 12, 13... Biological information measuring devices 120··Blood pressure measurement unit 123 Pump 124. Exhaust valve 130...Electrocardiogram measurement section 210 curlers 220...Compression cuff 221 ··First compression cuff section 222...Second compression cuff section 241...Second electrode

Claims

1. A biological information measuring device that measures the blood pressure of a subject and other biological information different from said blood pressure, A belt portion that is wrapped around the outer circumference of the part of the person to be measured and secures the biometric information measuring device to the part of the person to be measured, A fluid bag is positioned on the inner circumference side of the support member, A pump that supplies fluid into the fluid bag, A valve provided in the fluid passage that communicates with the fluid bag, A blood pressure measuring unit that measures the blood pressure at the area to be measured by supplying the fluid from the pump to inflate the fluid bag, thereby compressing the area to be measured, or by controlling the valve to discharge the fluid from the fluid bag and deflating the fluid bag, thereby releasing the pressure on the area to be measured, A detection unit for contacting the part of the person to be measured and measuring the biological information, A biological information measuring unit that measures the biological information using the detection unit, Equipped with, The fluid bag includes a first bag portion and a second bag portion that are spaced apart in the circumferential direction of the support member and communicate with each other. The detection unit is The detection support portion, which is the support member, is supported by the detection support portion that is exposed on the inner circumference side between the first bag portion and the second bag portion. A biological information measuring device characterized in that it is positioned at a first predetermined distance from the first end of the first bag portion on the detection portion side, and at a second predetermined distance from the first end of the second bag portion on the detection portion side, in a position that can limit the change in the contact state between the detection portion and the part to be measured due to the movement of the detection portion support portion accompanying the volume change of the first bag portion and the second bag portion to a predetermined range.

2. The biological information measuring device according to claim 1, characterized in that the detection unit is a photoelectric volume pulse wave sensor, and the biological information is a pulse wave or information based on the pulse wave.

3. The biological information measuring device according to claim 1, characterized in that the detection unit is an arterial blood oxygen saturation sensor, and the biological information is arterial blood oxygen saturation or information based on said arterial blood oxygen saturation.

4. The aforementioned biological information is an electrocardiogram waveform, A first electrode that comes into contact with the first part of the person being measured, The detection unit includes a second electrode that contacts the second part, which is the part to be measured and is different from the first part, The electrode support portion, which is the detection unit support portion, The aforementioned biological information measurement unit includes an electrocardiogram measurement unit that measures the electrocardiogram waveform of the person being measured through the first electrode and the second electrode, A biological information measuring device according to claim 1, characterized by comprising the above.

5. It has a third electrode that contacts a third part of the person being measured, which is different from the first and second parts, and sets a reference potential, The third electrode is The second bag portion is supported by an extension of the support member that extends from the second end opposite to the first end to the extension of the support member that extends to the opposite side of the first end. The bio-information measuring device according to claim 4 is positioned at a third predetermined distance from the second end of the second bag portion, and is positioned in a location that can limit the change in the contact state between the third electrode and the third portion due to the movement of the extension portion accompanying the volume change of the second bag portion to a predetermined range. Fixed device.

6. It has a third electrode that contacts a third part of the person being measured, which is different from the first and second parts, and sets a reference potential, The biological information measuring device according to claim 4, characterized in that the third electrode is supported by the electrode support portion and is positioned in the same position as the second electrode in the circumferential direction with respect to the first bag portion and the second bag portion, and is aligned with respect to the second electrode in a direction perpendicular to the circumferential direction.

7. The system includes a fourth electrode that contacts a fourth part of the person being measured, which is different from the first and second parts, The electrocardiogram measurement unit measures the electrocardiogram waveform of the person being measured through the first electrode, the second electrode, and the fourth electrode. The fluid bag further includes a third bag portion that is spaced apart from the second bag portion on the opposite side from the first bag portion in the circumferential direction of the support member and communicates with the second bag portion. The biological information measuring device according to claim 4, wherein the fourth electrode is supported by the second electrode support portion, which is a support member exposed on the inner circumference side between the second bag portion and the third bag portion, and is positioned at a fourth predetermined distance from the second end of the second bag portion on the fourth electrode side and a fifth predetermined distance from the first end of the third bag portion on the fourth electrode side, and is positioned in a location that can limit the change in the contact state between the fourth electrode and the fourth portion due to the movement of the second electrode support portion accompanying the volume change of the second bag portion and the third bag portion to a predetermined range.

8. The biological information measuring device according to claim 7, characterized in that the fourth electrode is electrically connected to the second electrode.

9. The fourth electrode is not electrically connected to the second electrode. The bio-information measuring device according to claim 7, characterized in that the electrocardiogram measuring unit measures the electrocardiogram waveform based on either a first potential difference detected by the first electrode and the second electrode, or a second potential difference detected by the first electrode and the fourth electrode.

10. A third electrode that contacts a third part of the person being measured, which is different from the first part, the second part, and the fourth part, and sets a reference potential, A fifth electrode, which is in contact with the fifth part of the person being measured and is different from any of the first, second, third, and fourth parts, and is electrically connected to the third electrode, It has, The third electrode is supported by the electrode support portion and is positioned in the same circumferential position as the second electrode with respect to the first and second bag portions, and in a direction perpendicular to the circumferential direction with respect to the second electrode. The biological information measuring device according to any one of claims 7 to 9, characterized in that the fifth electrode is supported by the second electrode support portion and is positioned in the same position as the fourth electrode in the circumferential direction with respect to the second bag portion and the third bag portion, and is aligned with respect to the fourth electrode in a direction perpendicular to the circumferential direction.

11. The support member is a curler that curves in accordance with the circumferential direction of the part of the person being measured. The biological information measuring device according to claim 1, characterized in that the belt portion is wrapped around the outer circumference of the curler.

12. The biometric information measuring device according to claim 11, characterized in that the curler is joined to the belt portion.

13. The biological information measuring device according to claim 1, characterized in that the support member constitutes a part of the belt portion.

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