Biological information measurement device

Abstract

This biological information measurement device is provided with: a blood pressure measurement means comprising a cuff for measuring the blood pressure of a human body; a biological information measurement means for measuring biological information different from the blood pressure; a band part which is wound and fixed around the outer periphery of the arm part of the human body and in which the cuff provided on the inner peripheral side is disposed on the outer periphery of the arm part; the main body part comprises a bottom part, and the bottom part is positioned on one side which is in contact with the arm part in a wearing state; and a sensor which is provided on the bottom portion and measures the biological information by coming into contact with the arm portion, a plurality of the cuffs are provided in the extension direction of the band portion, and the sensor is disposed at a change suppression position on the bottom portion. The bottom portion change suppression position is a position of the bottom portion on an extension line of a resultant vector obtained by combining vectors of forces acting from a center portion of the arm portion toward a most-expanded portion of the cuff, the vectors being formed by combining vectors of forces acting from a center portion of the arm portion toward the most-expanded portion of the cuff. The change suppression position of the bottom portion can suppress a change in the contact state of the sensor with respect to the arm portion due to the expansion of the cuff.

Description

Technical Field

[0001] This invention relates to a biometric information measuring device worn on the human body. Background Technology

[0002] In recent years, it has become common for individuals to measure their own blood pressure, electrocardiogram waveforms, and other information related to their physical health (hereinafter also referred to as biometric information) using measuring devices, and to effectively utilize the results for health management. As a result, the demand for portable devices has increased, leading to the development of portable measuring devices worn on the wrist (e.g., Patent Document 1, etc.).

[0003] Patent Document 1 discloses a portable electrocardiogram (ECG) measuring device worn on the wrist that can measure blood pressure. In this device, two electrodes for ECG measurement are arranged circumferentially on the back of the main body, which is located on the back of the hand and is wrapped around the wrist by a cuff. In this portable ECG measuring device, when measuring both blood pressure and ECG signals, the cuff wrapped around the wrist is pressurized and inflated, causing the main body to tilt. This changes the contact area between the electrodes and the skin, thus reducing the accuracy of the ECG signal.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Chinese Application Publication No. 114680852 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] In view of the above-mentioned prior art, the object of the present invention is to provide a technology that allows the sensor to maintain stable contact with the skin even when the cuff is inflated, and can measure biological information with high accuracy.

[0009] Solution for solving the problem

[0010] To solve the above-mentioned technical problems, the present invention is a biological information measuring device, characterized in that it comprises:

[0011] A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body;

[0012] A biological information measurement unit measures biological information that differs from the blood pressure.

[0013] The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm.

[0014] The main body includes a bottom portion, the bottom portion being located on the side that contacts the arm portion when worn; and

[0015] A sensor, located at the bottom, is used to contact the arm to measure information about the organism.

[0016] A plurality of sleeve straps are provided on both sides of the extension direction of the belt portion relative to the main body portion.

[0017] The sensor is disposed at the bottom change suppression position, which is the position of the bottom on the extension line of the composite vector obtained by the vector synthesis of the forces acting on the center of the arm toward the most bulging part of each cuff. The most bulging part of each cuff is the part that expands the most radially when each cuff expands. The bottom change suppression position can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff.

[0018] Therefore, even when the cuff expands during blood pressure measurement, changes in the contact state between the sensor and the arm can be suppressed. Thus, even when the cuff expands, the sensor remains in stable contact with the skin, enabling high-precision measurement of biological information.

[0019] Here, the contact state includes at least one of the angle and position of the sensor relative to the arm.

[0020] Furthermore, in this invention, it is also possible that...

[0021] The sensor includes two or more sensor units arranged side by side in a direction orthogonal to the extension direction of the strip.

[0022] Therefore, when the cuff expands, a force is applied in the rotational direction relative to the direction of extension of the cuff, but the sensor units are arranged side by side in this direction, so changes in the contact state can be suppressed.

[0023] Furthermore, in this invention, it is also possible that...

[0024] The circumferential lengths of the plurality of cuffs are approximately equal, and when the plurality of cuffs expand, the change-inhibiting position is located opposite the central portion of the portion of the outer periphery of the arm where it overlaps with the plurality of cuffs.

[0025] Therefore, when the circumferential lengths of the multiple cuffs are approximately equal, when the multiple cuffs expand, the radial expansion of the multiple cuffs combined together is greatest at the central part of the overlapping portion. As a result, for the sensor positioned on the outer periphery of the arm opposite to this central part, the force in the rotational direction centered on the axis orthogonal to the circumferential direction of the arm is reduced, thus suppressing changes in the sensor's contact state with the arm.

[0026] Here, "opposite" on the outer periphery of the arm means that the central part of the area where the change suppression position overlaps with the multiple cuffs, across the center of the arm, is located on the same straight line passing through the center of the arm. Furthermore, the case where the circumferential lengths of the multiple cuffs are approximately equal is not limited to the case where the circumferential lengths of the multiple cuffs are completely equal, but also includes cases where the circumferential lengths of the multiple cuffs are slightly different due to manufacturing errors, etc. In essence, the main point is that the circumferential lengths of the multiple cuffs are equal.

[0027] Furthermore, in this invention, it is also possible that...

[0028] The multiple cuffs are approximately equal in length. In the wearing state, a circumferential gap is formed between the circumferential ends of the multiple cuffs. When the multiple cuffs expand, the change suppression position is opposite the outer periphery of the arm and the center of the gap.

[0029] Therefore, when the circumferential lengths of the multiple cuffs are approximately equal, when the multiple cuffs expand, the force in the rotational direction centered on the axis orthogonal to the circumferential ends of the multiple cuffs decreases for the sensor located at the position opposite the center of the gap formed between the outer periphery of the arm and the circumferential ends of the multiple cuffs, thus suppressing changes in the sensor's contact state with the arm.

[0030] Here, "opposite" on the outer periphery of the arm means that the central part of the gap between the change suppression position and the circumferential end, separated by the center of the arm, is located on the same straight line passing through the center of the arm. Furthermore, the case where the circumferential lengths of multiple sleeves are approximately equal is not limited to the case where the circumferential lengths of multiple sleeves are completely equal, but also includes the case where the circumferential lengths of multiple sleeves are slightly different due to manufacturing errors, etc. In essence, the main point is that the circumferential lengths of multiple sleeves are equal.

[0031] Furthermore, the present invention is a biological information measuring device, characterized in that it comprises:

[0032] A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body;

[0033] A biological information measurement unit measures biological information that differs from the blood pressure.

[0034] The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm.

[0035] The main body includes a bottom portion, the bottom portion being located on the side that contacts the arm portion when worn; and

[0036] A sensor, located at the bottom, is used to contact the arm to measure information about the organism.

[0037] A cuff is provided relative to the main body in the extension direction of the belt portion.

[0038] When the cuff expands, the bottom of the sensor, which is equipped with the sensor and can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff, is located at the outer periphery of the arm and opposite the most expanded part, which is the most expanded part of the cuff in the radial direction.

[0039] Therefore, in a configuration where a cuff is provided in the extension direction of the belt relative to the main body, for a sensor positioned at the outer periphery of the arm when the cuff expands, opposite the most expanded part of the cuff in the radial direction, the force in the rotational direction centered on the axis orthogonal to the circumferential direction of the arm is reduced, thus suppressing changes in the sensor's contact state with the arm.

[0040] Here, "opposite" on the outer periphery of the arm means that, across the center of the arm, the position of the change suppression and the most bulging part of the cuff are on the same straight line passing through the center of the arm.

[0041] Furthermore, in this invention, it is also possible that...

[0042] The sensor includes two or more sensor units arranged side by side in a direction orthogonal to the extension direction of the strip.

[0043] Therefore, when the cuff expands, a force is applied in the rotational direction relative to the direction of extension of the cuff, but the sensor units are arranged side by side in this direction, so changes in the contact state can be suppressed.

[0044] Furthermore, the present invention is a biological information measuring device, characterized in that it comprises:

[0045] A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body;

[0046] A biological information measurement unit measures biological information that differs from the blood pressure.

[0047] The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm.

[0048] The main body includes a bottom portion, the bottom portion being located on the side that contacts the arm portion when worn; and

[0049] A sensor, located at the bottom, is used to contact the arm to measure information about the organism.

[0050] A cuff is provided relative to the main body in the extension direction of the belt portion.

[0051] The sensor is positioned between a first change-suppression position and a second change-suppression position on the bottom, wherein,

[0052] The first change-suppressing position at the bottom is the location of the bottom where, when the cuff expands, the vector of the force acting from this position toward the most expanded portion, which is the radially most expanded part of the cuff, passes through the center of the assumed thinnest part of the arm. This first change-suppressing position at the bottom can suppress changes in the contact state of the sensor relative to the arm caused by the expansion of the cuff.

[0053] The second change suppression position at the bottom is another position of the bottom where, when the cuff expands, the vector of the force acting toward the most expanded portion passes through the center of the assumed thickest part of the arm. The second change suppression position at the bottom can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff.

[0054] Therefore, in a configuration where a cuff is provided in the extension direction of the band relative to the main body, the sensor is positioned between a first change-suppressing position and a second change-suppressing position at the bottom. The first change-suppressing position at the bottom is the position of the bottom of the main body. When the cuff expands, the vector of the force acting from this position toward the most expanded part, which is the radially most expanded part of the cuff, passes through the center of the assumed thinnest arm. The first change-suppressing position at the bottom can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff. The second change-suppressing position at the bottom is any other position at the bottom. When the cuff expands, the vector of the force acting toward the most expanded part passes through the center of the assumed thickest arm. The second change-suppressing position at the bottom can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff. Therefore, regardless of the thickness of the arm of the person wearing the biometric information measuring device, the change in the contact state between the sensor and the arm can be suppressed. Thus, even when the cuff expands, the sensor maintains stable contact with the skin, enabling high-precision measurement of biometric information.

[0055] A biological information measuring device, characterized in that it comprises:

[0056] A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body;

[0057] A biological information measurement unit measures biological information that differs from the blood pressure.

[0058] The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm.

[0059] The main body includes a bottom portion, the bottom portion being located on the side that contacts the arm portion when worn; and

[0060] A sensor, located at the bottom, is used to contact the arm to measure information about the organism.

[0061] The sensor includes two or more sensor units arranged side by side in a direction orthogonal to the extension direction of the strip.

[0062] Therefore, when the cuff expands, a force is applied in the rotational direction relative to the direction of extension of the cuff, but the sensor units are arranged side by side in this direction, so changes in the contact state can be suppressed.

[0063] Furthermore, in this invention, it is also possible that...

[0064] When viewed from a direction orthogonal to the extension direction of the strip, at least a portion of the sensor portion overlaps.

[0065] Therefore, when the cuff expands, a force is applied in the direction of rotation relative to the direction of extension of the cuff. However, when viewed from the direction of extension of the cuff, the sensor is configured to overlap at least partially, thus suppressing changes in the contact state.

[0066] Furthermore, the present invention is a biological information measuring device, characterized in that it comprises:

[0067] A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body;

[0068] A biological information measurement unit measures biological information that differs from the blood pressure.

[0069] The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm.

[0070] The main body includes a bottom portion located on the side that contacts the arm when worn; and a sensor disposed on the bottom portion for contacting the arm portion to measure biometric information.

[0071] Relative to the main body, a plurality of cuffs of approximately equal circumferential length are provided on both sides of the extension direction of the belt portion.

[0072] The sensor is positioned at the center of the portion of the outer periphery of the arm where it overlaps with the plurality of cuffs.

[0073] Therefore, in a configuration where multiple cuffs of approximately equal circumferential length are provided on both sides of the main body in the extension direction of the strap, the radial expansion is greatest at the center of the overlapping portion of the multiple cuffs. Consequently, the force in the rotational direction centered on an axis orthogonal to the circumferential direction of the arm is reduced for a sensor positioned at this location opposite the arm's outer periphery. This suppresses changes in the sensor's contact state with the arm when the cuffs expand.

[0074] Here, "opposite" on the outer periphery of the arm means that, across the center of the arm, the central portion of the area where the sensor overlaps with multiple cuffs is located on the same straight line passing through the center of the arm. Furthermore, the circumferential lengths of the multiple cuffs are approximately equal, not limited to the case where the circumferential lengths of the multiple cuffs are completely equal, but also including cases where the circumferential lengths of the multiple cuffs differ slightly due to manufacturing errors, etc. In essence, the main point is that the circumferential lengths of the multiple cuffs are equal.

[0075] Furthermore, the present invention is a biological information measuring device, characterized in that it comprises:

[0076] A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body;

[0077] A biological information measurement unit measures biological information that differs from the blood pressure.

[0078] The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm.

[0079] The main body includes a bottom portion, the bottom portion being located on the side that contacts the arm portion when worn; and

[0080] A sensor, located at the bottom, is used to contact the arm to measure information about the organism.

[0081] Relative to the main body, a plurality of cuffs of approximately equal circumferential length are provided on both sides of the extension direction of the belt portion.

[0082] In the wearing state, a circumferential gap is formed between the circumferential ends of the plurality of cuffs.

[0083] The sensor is positioned opposite the center of the gap on the outer periphery of the arm.

[0084] Therefore, for a sensor positioned opposite the center of the gap formed between the outer periphery of the arm and the circumferential ends of the multiple cuffs, the force in the rotational direction centered on the axis orthogonal to the circumferential direction of the arm is reduced, thus suppressing changes in the sensor's contact state with the arm.

[0085] Here, "opposite" on the outer periphery of the arm means that the center of the gap between the sensor and the circumferential end, separated by the center of the arm, is located on the same straight line passing through the center of the arm. Furthermore, the circumferential lengths of the multiple cuffs are approximately equal, not limited to the case where the circumferential lengths of the multiple cuffs are completely equal, but also including cases where the circumferential lengths of the multiple cuffs are slightly different due to manufacturing errors, etc. In essence, the main point is that the circumferential lengths of the multiple cuffs are equal.

[0086] A biological information measuring device, characterized in that it comprises:

[0087] A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body;

[0088] A biological information measurement unit measures biological information that differs from the blood pressure.

[0089] The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm.

[0090] The main body includes a bottom portion, the bottom portion being located on the side that contacts the arm portion when worn; and

[0091] A sensor, located at the bottom, is used to contact the arm to measure information about the organism.

[0092] A cuff is provided in the extension direction of the belt relative to the main body. When the cuff expands, the sensor is located on the outer periphery of the arm opposite the most expanded part of the cuff in the radial direction.

[0093] Therefore, in a configuration where a cuff is provided in the extension direction of the belt relative to the main body, for a sensor positioned at the outer periphery of the arm and opposite the most expanded portion of the cuff in the radial direction when the cuff expands, the force in the rotational direction centered on the axis orthogonal to the circumferential direction of the arm is reduced, thus suppressing changes in the sensor's contact state with the arm.

[0094] Here, "opposite" on the outer periphery of the arm means that, across the center of the arm, the sensor and the most bulging part of the cuff are located on the same straight line passing through the center of the arm.

[0095] Furthermore, in this invention, it is also possible that...

[0096] The biological information measurement unit measures the electrocardiogram waveform of the human body.

[0097] The sensor is an electrode that detects the electrocardiogram waveform.

[0098] Therefore, even when the cuff expands during blood pressure measurement, changes in the contact state between the electrode and the arm can be suppressed. Thus, even when the cuff expands, the electrode maintains stable contact with the skin, enabling high-precision measurement of electrocardiogram waveforms.

[0099] Furthermore, in this invention, it is also possible that...

[0100] The electrode has a shape that is linearly symmetrical with respect to a direction orthogonal to the extension direction of the strip.

[0101] Therefore, when the cuff expands, even if a force is applied in the direction of rotation relative to the axis orthogonal to the extension direction of the cuff, the change in the contact state between the electrode and the arm can be suppressed.

[0102] Invention Effects

[0103] According to the present invention, the sensor remains in stable contact with the skin even when the cuff is inflated, enabling high-precision measurement of biological information. Attached Figure Description

[0104] Figure 1 This is a schematic perspective view of the biological information measuring device according to an embodiment of the present invention.

[0105] Figure 2 This is a schematic side view illustrating the biological information measuring device of an embodiment.

[0106] Figure 3 This is an explanatory diagram showing the configuration of the biometric information measuring device of the embodiment when worn on the wrist.

[0107] Figure 4 This is an external view of the main body of the biological information measuring device of the embodiment, viewed from the bottom side.

[0108] Figure 5 This is a block diagram illustrating the functional configuration of the biological information measuring device in the embodiment.

[0109] Figure 6 (A) Figure 6 (B) is a diagram illustrating the configuration of the vital signs sensor in Example 1.

[0110] Figure 7 (A) Figure 7 (B) is a diagram illustrating the details of the configuration of the vital signs sensor in Example 1.

[0111] Figure 8 (A) Figure 8 (B) is a diagram illustrating the configuration of the vital signs sensor in Example 2.

[0112] Figure 9 (A) Figure 9 (B) is a diagram illustrating the configuration of the vital signs sensor in Example 3.

[0113] Figure 10 (A) ~ Figure 10 Figure (C) illustrates the shape of the electrodes and the distance between them in Example 4.

[0114] Figure 11 (A) ~ Figure 11 (E) is a diagram illustrating the configuration of the electrodes in Example 5. Detailed Implementation

[0115] Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

[0116] <Example 1>

[0117] Hereinafter, an example of an embodiment of the present invention will be described. Unless otherwise specified, the dimensions, materials, shapes, and relative arrangements of the constituent components described in this embodiment are not intended to limit the scope of the present invention.

[0118] (Device Composition)

[0119] Figure 1 This is a schematic perspective view showing the configuration of the biological information measuring device 1 in this embodiment. Furthermore, Figure 2 This is a schematic side view showing the configuration of the biological information measuring device 1 in this embodiment. Figure 1 , Figure 2 As shown, the bio-information measuring device 1 is a watch-shaped wearable device that generally has a main body 10 and a strap 20. It can measure bio-information such as pulse wave (pulse), blood pressure value and electrocardiogram waveform when worn on the wrist T of a human body. Figure 3 The diagram shows the configuration relationship between the wrist T and each component of the biometric information measuring device 1 when the biometric information measuring device 1 of this embodiment is worn on the wrist T.

[0120] like Figure 1 and Figure 2As shown, the main body 10 is configured to include a main housing 11 and a cuff cover 16 (described later). The main housing 11 is provided with a display 12 (e.g., an organic EL display), operation buttons 131 and 132, and an ear 14, and also includes a sensor receiving portion 15 for accommodating various sensors described later. It should be noted that in this embodiment, the side where the display 12 is formed is the surface of the main housing 11, and the side where the sensor receiving portion 15 is formed is the bottom 13 of the main housing 11. It should also be noted that in this embodiment, the operation buttons 131 and 132 are formed of conductors and also function as electrodes for electrocardiogram waveform measurement.

[0121] Figure 4 The image shows the appearance of the main body 10 as viewed from the bottom 13 side. Figure 4 As shown, the bottom 13 of the main housing 11 has a central area covered by a light-transmitting resin cover and an area corresponding to its outer periphery covered by a cuff cover 16. The sensor housing 15, viewed from above, is located in the central area of ​​the main housing 11, and the bottom 13 is covered by a light-transmitting resin cover, and as... Figure 2 and Figure 3 As shown, it is formed such that, when worn, the sleeve cover 16 protrudes towards the wrist T side.

[0122] Furthermore, a first electrode 133 and a second electrode 134 are provided at the bottom 13 of the main body housing 11, with the contact surface exposed to the human body. Either the first electrode 133 or the second electrode 134 functions as the GND electrode during electrocardiogram waveform measurement. When measuring the electrocardiogram waveform, the bio-information measuring device 1 is worn, the contact surfaces of the first electrode 133 and the second electrode 134 are in contact with the skin surface of the wearing part, and the operation buttons 131 and 132 are touched with the finger on the side of the bio-information measuring device 1 not being worn, thereby enabling electrocardiogram waveform measurement under lead I.

[0123] Furthermore, a charging terminal 192 is provided at the bottom 13 of the main 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 in the image) is being charged.

[0124] The band portion 20 is configured to include, in addition to a band 21 for securing the biometric information measuring device 1 to the wrist T and a hook-and-loop fastener 25, 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 pressure pulse waves. It should be noted that the connection portions of each cuff 22, 23, 24 to the main body housing 11 are covered by a cuff cover 16. The cuff cover 16 protects the connection portions of each cuff 22, 23, 24 to the main body housing 11 and also functions to secure each cuff 22, 23, 24 to the main body housing 11. The first compression cuff 22 is located on one side of the circumference relative to the main body portion 10, and the second compression cuff 23 is located on the other side of the circumference relative to the main body portion 10. The band 21 corresponds to the band portion of the present invention, and the first compression cuff 22 and the second compression cuff 23 correspond to the plurality of cuffs of the present invention. Furthermore, the wrist T corresponds to the arm portion of the present invention.

[0125] In addition, the control board 17 is equipped with a processor such as a CPU (Central Processing Unit) and a memory such as RAM (Random Access Memory), which are not shown in the figure, and is responsible for the overall control of the biological information measuring device 1.

[0126] It should be noted that in this embodiment, the first LED 111 illuminates green light, and the second LED 113 illuminates not only green light but also red and / or infrared light.

[0127] On the other hand, although not shown, capacitors, amplifier circuits, A / D (Analog-to-Digital) conversion circuits, etc. are mounted on the first sensor substrate 101.

[0128] (Functional composition of the device)

[0129] Next, the functional structure of the biological information measuring device 1 will be explained. Figure 5 This is a block diagram illustrating the functional structure of the biological information measuring device 1. For example... Figure 5 As shown, the bio-information measuring device 1 of this embodiment includes functional units such as a pulse wave measuring unit 110, a blood oxygen saturation (SpO2) measuring unit 120, a blood pressure measuring unit 130, an electrocardiogram waveform measuring unit 140, a display unit 150, an operation unit 160, a communication unit 170, a storage unit 180, and a power supply unit 190. The processor of the control board 17 controls each component of the bio-information measuring device 1 by reading from the memory and executing programs, thereby realizing these functional units.

[0130] The pulse wave measuring unit 110 is configured to include a first LED 111, a second LED 113, and a first PD 112. It measures the pulse wave using a so-called photoelectric pulse wave method and calculates the pulse. Specifically, it detects and measures the pulse wave by irradiating green light from the first LED 111 and the second LED 113 and receiving the reflected light reflected within the biological body by the first PD 112. This detects changes in blood flow (changes in vascular capacity) associated with heartbeats. The pulse wave corresponds to the biological information of the present invention, and the pulse wave measuring unit 110 corresponds to the biological information measuring unit of the present invention. Furthermore, the first LED 111, the second LED 113, and the first PD 112 correspond to the sensor and sensor unit of the present invention.

[0131] The SpO2 measuring unit 120 is configured to include a second LED 113 and a second PD 121. It measures blood oxygen saturation by receiving reflected red light or infrared light irradiated from the second LED 113 using the second PD 121, based on the intensity of the reflected light. Blood oxygen saturation corresponds to the biological information of the present invention, and the SpO2 measuring unit 120 corresponds to the biological information measuring unit of the present invention. Furthermore, the second LED 113 and the second PD 121 correspond to the sensor and sensor unit of the present invention.

[0132] The blood pressure measuring unit 130 is configured to include a piezoelectric pump (not shown), a valve, a pressure sensor and a flow path plate, a first compression cuff 22, a second compression cuff 23, and a sensing cuff 24, and measures blood pressure using a so-called oscillometric method. Blood pressure measurement using the oscillometric method is a well-known technique, therefore a detailed description is omitted. The blood pressure measuring unit 130 corresponds to the blood pressure measuring unit of the present invention.

[0133] The electrocardiogram (ECG) waveform measurement unit 140 is configured to include operation buttons 131 and 132, a first electrode 133 and a second electrode 134 located at the bottom 13 of the main housing 11, and an ECG waveform measurement circuit (not shown), measuring the ECG waveform in a so-called I-lead manner. Specifically, the ECG waveform is measured based on the potential difference between the first electrode 133 and the second electrode 134, which are in contact with the wrist T of one arm when worn, and the fingers of the other hand, which are in contact with the operation buttons 131 or 132, which function as electrodes. The ECG waveform measurement unit 140 corresponds to the bio-information measurement unit of the present invention. Furthermore, the operation buttons 131 and 132, the first electrode 133, and the second electrode 134 correspond to the sensor and sensor unit of the present invention.

[0134] The display unit 150 is configured to include a display 12, which displays various information such as measurement results of biological information and menu screens. The operation unit 160 is configured to include operation buttons 131 and 132, which accept user input operations. The communication unit 170 includes an antenna (not shown) for wireless communication, for example, for communication with other electronic devices such as information processing terminals via BLE communication. It should be noted that a terminal for wired communication may also be included.

[0135] The storage unit 180 is configured to include a main storage device (not shown) such as RAM (Random Access Memory) to store various information such as application programs and measured biological information. In addition to RAM, it may also include long-term storage media such as flash memory. The power supply unit 190 is configured to include a rechargeable battery and a charging terminal 192, and functions as a power supply source for all parts constituting the biological information measuring device 1.

[0136] (Configuration of vital signs sensors)

[0137] The configuration of the vital signs sensor 30 at the bottom 13 of the main body 10 of the biological information measuring device 1 in this embodiment will be described below.

[0138] The vital signs sensor 30 refers to a sensor that contacts the wrist T of a person when wearing the biometric information measuring device 1, and is used to measure biometric information. For example, it is equivalent to... Figure 4 The first electrode 133 and the second electrode 134 used for measuring electrocardiogram waveforms are described in the description, but are not limited to these. Figure 6 In the diagram, only one vital sign sensor 30 is shown, but this is a schematic representation of the vital sign sensor 30. It may also include two vital sign sensors, as described above with the first electrode 133 and the second electrode 134. When the vital sign sensor 30 is composed of multiple vital sign sensors, its number is not limited. Here, the vital sign sensor 30 corresponds to the sensor of the present invention.

[0139] Figure 6 (A) is a schematic diagram showing the configuration of the biological information measuring device 1 as viewed from the bottom 13 side. Here, as in Figures 1-4 As explained, the biological information measuring device 1 extends along the belt portion 20 of the main body 10 ( Figure 4 The bottom 13, located approximately at its center in the Y direction (hereinafter also referred to as the long dimension direction), is positioned in a direction orthogonal to the extension direction of the strip 20. Figure 4 The vital signs sensor 30 is a rectangular structure extending in the X direction (hereinafter also referred to as the short dimension direction).

[0140] Reference Figure 7 (A), for the position 13a of the bottom 13 in the biological information measuring device 1 (in Figure 6 The technical significance of the position shown by the dashed line in (A) will be explained. When the biometric information measuring device 1 described herein is worn on the wrist T, the first pressing cuff 22 and the second pressing cuff 23 overlap on the inner side of the wrist T, which is opposite the main body 10, across the wrist T.

[0141] Assuming that during pressure application, the first compression cuff 22 expands to its maximum radial extent at its most inflated part 22e, and similarly, the second compression cuff 23 expands to its maximum radial extent at its most inflated part 23e, respectively... Figure 7 The position shown in (A). At this time, the vector V22, which passes through the center C of the wrist T toward the most expanded portion 22e, represents the force acting on the main body 10 via the strap portion 20 due to the expansion of the first pressing cuff 22, and the vector V23, which passes through the center C of the wrist T toward the most expanded portion 23e, represents the force acting on the main body 10 via the strap portion 20 due to the expansion of the second pressing cuff 23. At this time, as Figure 7 As shown in (B), during pressurization, the force exerted on the main body 10 by the expansion of the first pressing cuff 22 and the second pressing cuff 23 can be represented by a composite vector VT1 obtained by combining vectors V22 and V23. This composite vector VT1 is also a vector passing through the center C of the wrist T. A vital signs sensor 30 is positioned at the intersection of the extension line EL of the composite vector VT1, representing the force exerted on the main body 10 by the expansion of the first pressing cuff 22 and the second pressing cuff 23, and the bottom 13 of the main body 10. This minimizes the rotational torque about the X-axis caused by the force exerted on the vital signs sensor 30 by the expansion of the first pressing cuff 22 and the second pressing cuff 23 during pressurization. Therefore, even if the first compression cuff 22 and the second compression cuff 23 expand, the rotation of the vital signs sensor 30 around the X-axis can be suppressed. Thus, even when blood pressure measurement and biometric information measurement based on the vital signs sensor 30 are performed simultaneously, changes in the contact state of the vital signs sensor 30 relative to the wrist T can be suppressed, and changes in the contact area between the vital signs sensor 30 and the wrist T can be suppressed, enabling high-precision measurements. Furthermore, the center C of the wrist T is, for example, the center when the cross-section of the wrist T taken in the direction of the arm is approximately a circle or an ellipse, but it is not limited to this. Here, the position where the extension line EL of the composite vector VT intersects the bottom 13 of the main body 10 corresponds to the change suppression position of the present invention.

[0142] Figure 6 (A) and Figure 6The biometric information measuring device 1 shown in (B) illustrates an example where the circumferential length of the first compression cuff 22 is approximately equal to the circumferential length of the second compression cuff 23. In this configuration, the aforementioned vectors V22 and V23 are symmetrical with respect to the central portion 200 of the overlapping area connecting the first compression cuff 22 and the second compression cuff 23, and the straight line of the center portion C of the wrist T. Therefore, as shown in (B), the biometric information measuring device 1 has an circumferential length of approximately equal to the circumferential length of the first compression cuff 22 and the second compression cuff 23. Figure 6 As shown in (B), the composite vector VT1 overlaps with the straight line connecting the central part 200 of the overlapping portion of the first pressing sleeve 22 and the second pressing sleeve 23 with the central part C of the wrist T. Figure 7 The position where the extension line EL of the composite vector VT1 shown in (B) intersects with the bottom 13 is: Figure 6 Position 13a is shown in (A). As described above, position 13a is located on a straight line between the central portion 200 of the overlapping portion of the first compression cuff 22 and the second compression cuff 23 and the central portion C of the wrist T. That is, position 13a is on the outer periphery of the wrist T opposite to the central portion 200 of the overlapping portion of the first compression cuff 22 and the second compression cuff 23. Therefore, even if the first compression cuff 22 and the second compression cuff 23 expand, the rotation of the vital signs sensor 30 about the X-axis can be suppressed. Thus, even if blood pressure measurement and biometric information measurement based on the vital signs sensor 30 are performed simultaneously, changes in the contact state of the vital signs sensor 30 relative to the wrist T can be suppressed, and changes in the contact area between the vital signs sensor 30 and the wrist T can be suppressed, thus enabling high-precision measurement. Here, position 13a corresponds to the change suppression position of the present invention, and the central portion 200 corresponds to the central portion of the overlapping portion of the plurality of cuffs of the present invention. Furthermore, the case where the circumferential length of the first pressing sleeve 22 is approximately equal to the circumferential length of the second pressing sleeve 23 is not limited to the case where the circumferential lengths are completely equal, but also includes the case where the circumferential lengths are slightly different due to manufacturing errors, etc. In a substantial sense, the main point is that the circumferential lengths are equal.

[0143] <Example 2>

[0144] The following describes the biometric information measuring device 1-2 of Example 2. In the biometric information measuring device 1-2, the circumferential length of the first pressing cuff 22 and the circumferential length of the second pressing cuff 23 are approximately equal, but as will be explained below, their lengths differ from those of the biometric information measuring device 1 of Example 1. Apart from this, they share a common configuration. For configurations common to Example 1, common reference numerals are used, and detailed descriptions are omitted. It should be noted that, here, "approximately equal circumferential lengths" is not limited to the case where the circumferential lengths are completely equal, but also includes cases where the circumferential lengths are slightly different due to manufacturing errors, etc. In a substantial sense, the main point is the case where the circumferential lengths are equal.

[0145] like Figure 8 As shown in (A), the biometric information measuring device 1-2 includes a first pressing cuff 221 corresponding to the first pressing cuff 22 and a second pressing cuff 231 corresponding to the second pressing cuff 23. Figure 8 As shown in (B), when the biometric information measuring device 1-2 is fixed to the wrist T via the strap 20, the first pressing cuff 221 and the second pressing cuff 231 wrapped around the outer periphery of the wrist T do not overlap. A gap 210 exists between the circumferential ends 221a and 231a of the first pressing cuff 221 and the second pressing cuff 231a, where no cuff exists on the outer periphery of the wrist T. Here, the vital signs sensor 30 is positioned at position 13b on the bottom 13, opposite the central portion 210a of this gap 210, across the wrist T. The gap 210 corresponds to the gap of the present invention. Furthermore, position 13b corresponds to the change suppression position of the present invention.

[0146] When measuring blood pressure, the composite vector VT2, which is the vector from the center C of the wrist T toward the most bulging part of the first compression cuff 221 and the vector from the center C of the wrist T toward the most bulging part of the second compression cuff 231, overlaps with the straight line from the center 210a of the connecting gap 210 to the center C of the wrist T. Furthermore, the position 13b where the extension of this composite vector VT2 intersects the bottom 13 is located. This position 13b lies on the straight line from the center 210a of the connecting gap 210 to the center C of the wrist T; that is, position 13b is on the outer periphery of the wrist T opposite the center 210a of the circumferentially formed gap 210 between the circumferential ends 221a of the first compression cuff 221 and 231a of the second compression cuff 231. Therefore, even if the first compression cuff 221 and the second compression cuff 231 expand, the rotation of the vital signs sensor 30 around the X-axis can be suppressed. Thus, even if blood pressure measurement and biological information measurement based on the vital signs sensor 30 are performed simultaneously, the change in the contact state of the vital signs sensor 30 relative to the wrist T can be suppressed, the change in the contact area between the vital signs sensor 30 and the wrist T can be suppressed, and high-precision measurement can be performed.

[0147] <Example 3>

[0148] The following describes the biometric information measuring devices 1-3 of Example 3. As described below, the biometric information measuring devices 1-3 have only one pressing cuff 222 relative to the main body 10, and otherwise have the same configuration as the biometric information measuring device 1 of Example 1. For the configuration common to Example 1, common reference numerals are used, and detailed descriptions are omitted.

[0149] like Figure 9As shown in (A), the biometric information measuring device 1-3 has a press cuff 222 corresponding to the first press cuff 22, but does not have a press cuff corresponding to the second press cuff 23. Figure 9 As shown in (B), with the biometric measuring device 1-3 fixed to the wrist T via the band 20, the expansion of the compression cuff 222 wrapped around the outer periphery of the wrist T presses only a portion of the outer periphery of the wrist T. At this time, the most expanded part of the compression cuff 222 in the outer diameter direction is the most expanded part 220. Here, the position 13c of the bottom 13 of the vital signs sensor 30 is opposite to this most expanded part 220 across the wrist T. When measuring blood pressure, when the compression cuff 222 expands, the compression cuff 222 expands on the outermost diameter side at the most expanded part 220, so the compression cuff 222 and the band 20 exert a force on the main body 10 represented by the vector VF in the direction of the arrow passing through the center C of the wrist T. The position 13c is where the extension of this vector VF intersects the bottom 13 of the main body 10. The vital signs sensor 30 is positioned at the bottom 13, opposite the most bulging portion 220, across the wrist T. Therefore, even if a rotational torque is generated about the X-axis, this torque is minimized. Thus, even if the cuff 222 is pressed to expand, rotation of the vital signs sensor 30 about the X-axis can be suppressed. Therefore, even when blood pressure measurement and biometric measurements based on the vital signs sensor 30 are performed simultaneously, changes in the contact state of the vital signs sensor 30 relative to the wrist T can be suppressed, and changes in the contact area between the vital signs sensor 30 and the wrist T can be suppressed, enabling high-precision measurements. Here, position 13c corresponds to the change-suppression position of this invention.

[0150] Here, the relative positional relationship between the most bulging part 220 of the pressing cuff 222 and the center part C of the wrist T changes depending on the thickness of the wrist T of the person using the biometric information measuring device 1-3. Therefore, depending on the size of the wrist T of the person using the biometric information measuring device 1, the position where the extension line of the force vector VF passing through the center C of the wrist T towards the most bulging part 220 intersects with the bottom 13 of the main body 10 also changes. Figure 9In (A), assuming the person with the thinnest wrist T wears the biometric information measuring device 1-3, position 13d represents the position opposite to the most bulging part 220; assuming the person with the thickest wrist T wears it, position 13e represents the position opposite to the most bulging part 220. Therefore, the vital signs sensor 30 is positioned in the area between positions 13d and 13e, thereby suppressing rotation of the vital signs sensor 30 about the X-axis even when the cuff 222 is pressed to expand. Thus, even if people with varying wrist sizes T simultaneously undergo blood pressure measurement and biometric information measurement based on the vital signs sensor 30, changes in the contact state of the vital signs sensor 30 relative to the wrist T can be suppressed, and changes in the contact area between the vital signs sensor 30 and the wrist T can be suppressed, enabling high-precision measurement. Here, position 13d corresponds to the first change suppression position of the present invention, and position 13e corresponds to the second change suppression position of the present invention.

[0151] <Example 4>

[0152] The following describes the biological information measuring devices 1-4 of Embodiment 4. In the biological information measuring devices 1-4, the shape of the electrodes, which serve as an example of the vital signs sensor 30, is set to a specific shape. In the biological information measuring devices 1-4, apart from the overall configuration of the electrode shape, any one of the configurations of biological information measuring devices 1, 1-2, and 1-3 of Embodiments 1, 2, and 3 can be applied. Therefore, regarding configurations other than the electrodes, common reference numerals are used for configurations common to these embodiments, and detailed descriptions are omitted.

[0153] Figure 10 (A) shows an example of the shape of an electrode as an example of a vital signs sensor 30. Figure 10 The single-dot dashed line shown in (A) is Figure 4The X-axis is shown. Electrodes 301 to 303 are electrodes of preferred shapes. Electrode 301 is circular, and electrode 302 is a square obtained by rounding the four corners, both of which are symmetrical about the X-axis. Electrodes 303 and 304 are both trapezoidal, but electrode 303 is linearly symmetrical about the X-axis, while electrode 304 is linearly symmetrical about the Y-axis (orthogonal to the X-axis). The expansion of the cuff during blood pressure measurement causes a force in the rotational direction centered on the X-axis to act on the main body 10. Therefore, if the electrodes 301-303 are linearly symmetrical in the X-axis direction, changes in the contact area between the wrist T and the electrodes and changes in the pressure applied by the electrodes to the wrist can be further suppressed during the rotation of the main body 10. Thus, even when blood pressure measurement and ECG waveform measurement using electrodes 301-303 are performed simultaneously, changes in the posture of electrodes 301-303 relative to the wrist T can be further suppressed, and changes in the contact area and pressure applied by electrodes 301-303 to the wrist T can be suppressed, enabling high-precision measurement. Here, one electrode has been described, but the number of electrodes constituting the vital signs sensor 30 can be appropriately set.

[0154] Figure 10 (B) shows an example of electrode size. Figure 10 The generally rectangular electrodes 311 and 312 shown in (B) schematically represent the size of the electrodes, specifically, they are shaped like electrodes 301 to 303. The size of electrode 311 in the X-axis direction is larger than the size in the direction orthogonal to the X-axis. With this size, changes in the contact area between the wrist T and the electrode when the main body 10 rotates, as well as changes in the pressure of the electrode on the wrist, can be suppressed. Therefore, even when blood pressure measurement and ECG waveform measurement using electrode 311 are performed simultaneously, changes in the posture of electrode 311 relative to wrist T can be suppressed, and changes in the contact area and pressure of electrode 311 with wrist T can be further suppressed, enabling higher precision measurements. Around the X-axis, for example, the width of electrode 311 in the direction orthogonal to the X-axis can be set to 12 to 13 mm.

[0155] In contrast, it is also possible to consider making the size of the direction orthogonal to the X-axis larger than the size of the X-axis direction, as with electrode 312. However, in order to suppress the change in the contact area between the wrist T and the electrode caused by the rotation of the main body 10 around the X-axis, and the change in the pressure of the electrode on the wrist, it is ideal to have the size of electrode 311.

[0156] Figure 10 (C) is a diagram illustrating the spacing in the case of multiple electrodes. Figure 10 The roughly square electrodes 321 and 322 shown in (C) are examples used to illustrate the distance between two electrodes; their specific shapes and sizes are as shown in [the diagram]. Figure 10 (A) and Figure 10 As explained in (B). Ideally, the distance D in the X-axis direction between electrodes 321 and 322, which are arranged side-by-side along the X-axis, should be 40 mm or less. If the distance D between electrodes 321 and 322 is this close, the contact state with the wrist T during blood pressure measurement is the same, thus enabling more accurate measurement of the electrocardiogram waveform while measuring blood pressure. On the other hand, if the distance D between electrodes 321 and 322 is too large, the contact state with the wrist T during blood pressure measurement is not the same, which may affect the accuracy of the electrocardiogram waveform measurement.

[0157] <Example 5>

[0158] The following describes the biological information measuring apparatus 1-5 of Embodiment 5. The biological information measuring apparatus 1-5 has electrodes disposed at specific positions on the bottom 13. As described in Embodiments 1-3, there is an ideal position relative to the bottom 13, but the position of the electrodes at that position has a degree of freedom; therefore, the number and arrangement of the electrodes can be various. In the biological information measuring apparatus 1-5, apart from the overall configuration of the electrode arrangement, any one of the configurations of biological information measuring apparatus 1, biological information measuring apparatus 1-2, and biological information measuring apparatus 1-3 of Embodiments 1, 2, and 3 can be applied. Therefore, regarding configurations other than the electrodes, common reference numerals are used for configurations common to these embodiments, and detailed descriptions are omitted.

[0159] Figure 11 (A) ~ Figure 11 Example of electrode configuration for the bottom 13 of the biological information measuring device 1-5 is shown in (E). Figure 4 As shown, the X-axis direction is the elbow-wrist direction of the person wearing the biometric information measuring device 1-5, and the Y-axis direction is the long dimension direction of the belt 20.

[0160] exist Figure 11 In (A), electrodes 331 and 332, which are symmetrical about the X-axis, are arranged side-by-side along the X-axis in a manner symmetrical about the Y-axis. In contrast, Figure 11 As shown in (B), electrodes 334 and 335 are arranged in the X-axis direction with respect to the symmetrical shape of electrodes 331 and 332, but electrodes 334 and 335 are positioned biased towards the X-axis relative to the bottom 13. Not limited to the case where electrodes 331 and 332 are equally positioned in the X-axis direction, even when electrodes 334 and 335 are biased towards the X-axis relative to the bottom 13, changes in the contact area between the wrist T and the electrodes caused by the rotation of the main body 10 around the X-axis, and changes in the pressure of the electrodes on the wrist, can be suppressed, enabling high-precision measurement of electrocardiogram waveforms simultaneously with blood pressure measurement.

[0161] Figure 11 Electrodes 356 and 357, as shown in (C), are arranged equidistantly from the bottom 13 in the X-axis direction, but are asymmetrically arranged relative to the X-axis. However, when viewed in the X-direction, electrodes 356 and 357 are arranged to overlap in the central portion in the Y-direction. Even with this arrangement, changes in the contact area between the wrist T and the electrodes caused by the rotation of the main body 10 around the X-axis, as well as changes in the pressure exerted by the electrodes on the wrist, can be suppressed, enabling high-precision measurement of electrocardiogram waveforms simultaneously with blood pressure measurement.

[0162] exist Figure 11 In (D), electrode 338 is disposed at the center of the bottom 13 in both the X and Y directions. In contrast, Figure 11 The electrode 339 shown in (E) is positioned at the center of the bottom 13 in the Y direction, and at a position offset from the center of the bottom 13 in the X direction. Even with this configuration, changes in the contact area between the wrist T and the electrode caused by the rotation of the main body 10 around the X-axis, as well as changes in the pressure of the electrode on the wrist, can be suppressed, enabling high-precision measurement of electrocardiogram waveforms while measuring blood pressure.

[0163] Explanation of reference numerals in the attached figures

[0164] 1: Organism information measurement device;

[0165] 10: Main body;

[0166] 13a, 13b, 13c, 13d, 13e: Position;

[0167] 20: Belt section;

[0168] 22: First press the cuff;

[0169] 22e: The most bulging part;

[0170] 23: Second pressing cuff;

[0171] 23e: The most bulging part;

[0172] 30: Vital signs sensor;

[0173] 110: Pulse wave measurement unit;

[0174] 120: SpO2 measuring unit;

[0175] 130: Blood Pressure Measurement Department;

[0176] 140: Electrocardiogram waveform measurement unit;

[0177] 133: First electrode;

[0178] 134: Second electrode;

[0179] T: Wrist.

Claims

1. A biological information measuring device, characterized in that, have: A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body; A biological information measurement unit measures biological information that differs from the blood pressure. The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm. The main body includes a bottom, which is located on the side that contacts the arm when worn; and A sensor, located at the bottom, is used to contact the arm to measure information about the organism. A plurality of sleeve straps are provided on both sides of the extension direction of the belt portion relative to the main body portion. The sensor is disposed at the bottom change suppression position, which is the position of the bottom on the extension line of the composite vector obtained by the vector synthesis of the forces acting on the center of the arm toward the most bulging part of each cuff. The most bulging part of each cuff is the part that expands the most radially when each cuff expands. The bottom change suppression position can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff.

2. The biological information measuring device according to claim 1, characterized in that, The sensor includes two or more sensor units arranged side by side in a direction orthogonal to the extension direction of the strip.

3. The biological information measuring device according to claim 1, characterized in that, The circumferential lengths of the plurality of cuffs are approximately equal, and when the plurality of cuffs expand, the change-inhibiting position is located opposite the central portion of the portion of the outer periphery of the arm where it overlaps with the plurality of cuffs.

4. The biological information measuring device according to claim 1, characterized in that, The multiple cuffs are approximately equal in length. In the wearing state, a circumferential gap is formed between the circumferential ends of the multiple cuffs. When the multiple cuffs expand, the change suppression position is opposite the outer periphery of the arm and the center of the gap.

5. A biological information measuring device, characterized in that, have: A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body; A biological information measurement unit measures biological information that differs from the blood pressure. The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm. The main body includes a bottom, which is located on the side that contacts the arm when worn; and A sensor, located at the bottom, is used to contact the arm to measure information about the organism. A cuff is provided relative to the main body in the extension direction of the belt portion. When the cuff expands, the bottom of the sensor, which is equipped with the sensor and can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff, is located at the outer periphery of the arm and opposite the most expanded part, which is the most expanded part of the cuff in the radial direction.

6. The biological information measuring device according to claim 5, characterized in that, The sensor includes two or more sensor units arranged side by side in a direction orthogonal to the extension direction of the strip.

7. A biological information measuring device, characterized in that, have: A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body; A biological information measurement unit measures biological information that differs from the blood pressure. The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm. The main body includes a bottom, which is located on the side that contacts the arm when worn; and A sensor, located at the bottom, is used to contact the arm to measure information about the organism. A cuff is provided relative to the main body in the extension direction of the belt portion. The sensor is positioned between a first change-suppression position and a second change-suppression position on the bottom, wherein, The first change-suppressing position at the bottom is the location of the bottom where, when the cuff expands, the vector of the force acting from this position toward the most expanded portion, which is the radially most expanded part of the cuff, passes through the center of the assumed thinnest part of the arm. This first change-suppressing position at the bottom can suppress changes in the contact state of the sensor relative to the arm caused by the expansion of the cuff. The second change suppression position at the bottom is another position of the bottom where, when the cuff expands, the vector of the force acting toward the most expanded portion passes through the center of the assumed thickest part of the arm. The second change suppression position at the bottom can suppress the change in the contact state of the sensor relative to the arm caused by the expansion of the cuff.

8. A biological information measuring device, characterized in that, have: A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body; A biological information measurement unit measures biological information that differs from the blood pressure. The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm. The main body includes a bottom, which is located on the side that contacts the arm when worn; and A sensor, located at the bottom, is used to contact the arm to measure information about the organism. The sensor includes two or more sensor units arranged side by side in a direction orthogonal to the extension direction of the strip.

9. The biological information measuring device according to claim 8, characterized in that, When viewed from a direction orthogonal to the extension direction of the strip, at least a portion of the sensor portion overlaps.

10. A biological information measuring device, characterized in that, have: A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body; A biological information measurement unit measures biological information that differs from the blood pressure. The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm. The main body includes a bottom, which is located on the side that contacts the arm when worn; and A sensor, located at the bottom, is used to contact the arm to measure information about the organism. Relative to the main body, a plurality of cuffs of approximately equal circumferential length are provided on both sides of the extension direction of the belt portion. The sensor is positioned at the center of the portion of the outer periphery of the arm where it overlaps with the plurality of cuffs.

11. A biological information measuring device, characterized in that, have: A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body; A biological information measurement unit measures biological information that differs from the blood pressure. The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm. The main body includes a bottom, which is located on the side that contacts the arm when worn; and A sensor, located at the bottom, is used to contact the arm to measure information about the organism. Relative to the main body, a plurality of cuffs of approximately equal circumferential length are provided on both sides of the extension direction of the belt portion. In the wearing state, a circumferential gap is formed between the circumferential ends of the plurality of cuffs. The sensor is positioned opposite the center of the gap on the outer periphery of the arm.

12. A biological information measuring device, characterized in that, have: A blood pressure measuring unit, including a cuff for measuring blood pressure in a human body; A biological information measurement unit measures biological information that differs from the blood pressure. The cuff is wrapped around and fixed to the outer periphery of the arm of the human body, and the cuff located on the inner periphery is positioned on the outer periphery of the arm. The main body includes a bottom, which is located on the side that contacts the arm when worn; and A sensor, located at the bottom, is used to contact the arm to measure information about the organism. A cuff is provided in the extension direction of the belt relative to the main body. When the cuff expands, the sensor is located on the outer periphery of the arm opposite the most expanded part of the cuff in the radial direction.

13. The biological information measuring device according to any one of claims 1 to 12, characterized in that, The biological information measurement unit measures the electrocardiogram waveform of the human body. The sensor is an electrode that detects the electrocardiogram waveform.

14. The biological information measuring device according to claim 13, characterized in that, The electrode has a shape that is linearly symmetrical with respect to a direction orthogonal to the extension direction of the strip.

Images