JP2006026212A - Biological information detection device - Google Patents

Abstract

It is possible to simultaneously measure the systolic blood pressure, the diastolic blood pressure, the pulse rate, and the body fat percentage with a single sensing.
A light receiving / emitting device (pulse wave detecting means) 1 for detecting a pulse wave having a correlation with blood pressure, and a current applying electrode 21 for detecting impedance of a living body. And the impedance detection means 2 comprising the voltage detection electrode 22 are integrated. Then, the pulse and the pulse wave propagation time are obtained from the pulse wave signal from the light emitting / receiving device 1, the maximum blood pressure and the minimum blood pressure are calculated based on the pulse wave propagation time, and the human body measured by the impedance detection means 2 is calculated. The body fat percentage is calculated based on the impedance value.
[Selection] Figure 5

Description

  The present invention relates to a biological information detection apparatus that measures biological information such as pulse, blood pressure, and body fat percentage.

  Conventionally, the blood pressure of the human body is gradually lowered after cuffing an arm band (cuff) around the upper arm or arm, and stopping blood circulation by sending air into the cuff and pressing the arm, etc. The blood pressure value when blood flows out is measured as a maximum blood pressure, the cuff pressure is lowered, and the blood pressure is no longer heard when the blood pressure is lost. According to such a conventional blood pressure measurement method, there is a problem that the measurement subject is forced to suffer from the trouble of winding the cuff and the air pressure by the cuff. In addition, a sphygmomanometer with a body fat percentage meter that measures blood pressure and body fat percentage with a single device has been proposed (see, for example, Patent Document 1). There is a need.

On the other hand, in measuring blood pressure, as a method to relieve the suffering of the patient, the pulse wave and electrocardiogram are measured at the same time, and there is a correlation between the time difference between the pulse wave and electrocardiogram and the blood pressure value. There is also a measurement method for obtaining blood pressure (see, for example, Patent Document 2).
JP 2001-070258 A Japanese Patent Application Laid-Open No. 04-200439

  By the way, when measuring the blood pressure and the body fat percentage, when the measurement method described in Patent Document 2 described above, that is, the method for obtaining the blood pressure based on the time difference between the pulse wave and the electrocardiogram, is adopted, It is difficult to measure blood pressure and body fat percentage at the same time.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a living body information detection apparatus capable of simultaneously measuring a systolic blood pressure, a diastolic blood pressure, and a pulse and a body fat percentage with a single sensing. To do.

  The biological information detection apparatus of the present invention comprises a pulse wave detection means comprising a light emitting and receiving device that detects the movement of blood delivered from the heart as a pulse wave, and detects the pulse wave, a current application electrode, and a voltage detection electrode. There is an impedance detection means, which is characterized in that blood pressure, pulse and body fat percentage can be measured by the pulse wave detection means and the impedance detection means.

  Hereinafter, the present invention will be described in detail.

  First, in the blood pressure measurement, as described above, the maximum blood pressure and the minimum blood pressure are obtained by stopping the blood flow with a pressurization zone called a cuff and gradually decreasing the pressure. It is known that there is a correlation between the pulse wave propagation time and the blood pressure value obtained by the time difference between the two portions using the means for detecting the pulse (see, for example, JP-A-2000-107141). .

  Since there is an individual difference in the correlation between the pulse wave propagation time and the blood pressure value, it is necessary to measure the maximum blood pressure and the minimum blood pressure in advance. Specifically, a relational expression (correction formula) between the already measured maximum blood pressure value and minimum blood pressure value measured with another sphygmomanometer and the actual maximum blood pressure value and minimum blood pressure value based on the pulse wave transit time By obtaining and correcting the actual measured blood pressure value by the relational expression, high measurement accuracy is obtained.

  In the present invention, the pulse wave propagation time is obtained from the detection output of the pulse wave detection means, and based on the correlation between the pulse wave propagation time and the blood pressure, the maximum blood pressure, the minimum blood pressure, and the pulse during actual measurement are measured. To do. Furthermore, since the body fat percentage can also be calculated by obtaining the impedance value of the human body with the impedance detection means comprising the current application electrode and the voltage detection electrode, the maximum blood pressure, minimum blood pressure and It is possible to simultaneously measure the pulse and the body fat percentage.

  Here, if it is going to measure a blood pressure, a pulse, and a body fat percentage simultaneously, it is necessary to install the pulse wave detection means and impedance detection means which contact a part of human bodies, such as a finger, in the same place. To realize this, it is necessary to combine the pulse wave detection means and the impedance detection means in a compact manner, but the sensing method of each biological information is because the pulse wave is an optical method and the body fat percentage is an impedance method, Sensing using the same method is not possible. Therefore, in the present invention, the pulse wave detection means and the impedance detection means can be installed at the same location by integrating different types of sensing means together in the same package.

  In addition, in order to sense the pulse of a blood vessel, it is necessary to detect the movement of blood in the blood vessel. In the present invention, the absorption light spectrum characteristic of oxyhemoglobin in erythrocytes contained in blood (see FIG. 4). ) Is used to perform sensing using the characteristic that the amount of reflected light decreases due to absorption of oxyhemoglobin when irradiated with light of a specific wavelength. As the sensing means, 2 of the light emitting device and the light receiving device are used. A type of device is used.

  The light-receiving device used in the present invention senses light reflected from a component in blood by light emitted from a light-emitting device to a human finger or the like, but light other than the light-emitting device, such as sunlight, a fluorescent lamp, etc. Assuming that the light is sensed, a plurality of light receiving devices are mounted on the light receiving and emitting device.

  Further, if the irradiation light emitted from the light emitting device has only one type of wavelength, the absorption of oxyhemoglobin in the blood may not be sufficiently detected. You may make it detect a pulse wave using the light of the kind of wavelength.

  Furthermore, regarding the light emitting / receiving device used in the present invention, as described above, the wavelength component of the light emitting device and the wavelength component such as sunlight and fluorescent lamp are the detection targets. If the light receiving device is used, the amount of oxyhemoglobin is detected. A configuration may be adopted in which a plurality of light emitting devices for emitting a plurality of wavelength components and a light receiving device for receiving a plurality of wavelength components are mounted according to the use situation.

  In the present invention, the amount of oxyhemoglobin in the blood is detected at the time of detecting the pulse wave. Therefore, light having a wavelength component of about 780 to 1000 nm, which is a region of near infrared light and infrared light components, is irradiated. It is preferable to use a light emitting device. Furthermore, it is necessary to use a light emitting device that emits light having a wavelength component (360 to 660 nm) by utilizing the characteristic that absorption of wavelength component light of 360 to 660 nm is high due to the absorption light property of oxyhemoglobin in blood. Particularly preferred.

  In the present invention, when detecting the amount of oxyhemoglobin with near infrared light and infrared light, if the light emitting device and the light receiving device are sealed with a resin that cuts visible light, the near infrared light and Infrared light can be sensed efficiently.

  In addition, when detecting the amount of oxyhemoglobin with near-infrared light and infrared light, a filter that cuts visible light is arranged on the optical axis of the light-receiving device and the light-emitting device. Can be efficiently sensed.

  In the present invention, a device equipped with IrDA (Infrared Data Association) may be used as the light emitting / receiving device that constitutes the pulse group detection means.

  In the present invention, when detecting a pulse wave, it is necessary to press a part of the human body with an appropriate pressure. However, if the pressure is more than necessary, it may be difficult to detect the pulse wave. As one of means for solving this problem, there can be mentioned a configuration in which a protrusion is provided around the pulse detection means. If such a protrusion is provided, sensing can be performed at an appropriate pressure with respect to the light emitting and receiving device even if the pressure is higher than necessary.

  The present invention is characterized in that the pulse wave detecting means for sensing the blood flow and the impedance detecting means for measuring the impedance of the human body are integrated so as to be used as one sensor. That is, if blood pressure and pulse and body fat percentage are to be measured simultaneously, it is necessary to install pulse wave detection means and impedance detection means as sensing means for contacting a part of a human body such as a finger at the same location. . For this purpose, the pulse wave detection means and the impedance detection means need to be combined in a compact manner. Here, since the pulse wave is an optical method and the body fat percentage is an impedance method, sensing cannot be performed by the same method. Therefore, in the present invention, as described above, different types of sensing means are combined in the same package so that the pulse wave detection means and the impedance detection means can be arranged at the same location.

  In the present invention, two pulse waves are measured, and a blood pressure is calculated using a pulse wave propagation time using a time difference between the two pulse waves. In order to realize this, it is necessary to arrange the first pulse wave detection means and the second pulse wave detection means in at least two places. When blood pressure is obtained using two pulse wave detecting means, for example, a pulse wave signal obtained by the light receiving device of the first pulse wave detecting means and a pulse obtained by the light receiving device of the second pulse wave detecting means. The wave signal is sent to the blood pressure value calculation unit, and the pulse wave propagation time is calculated. Next, correction is made based on the already inputted systolic blood pressure, diastolic blood pressure, and the blood pressure measurement history so far stored in the storage device, and the systolic blood pressure and the diastolic blood pressure are calculated and obtained to determine the actually measured systolic blood pressure and diastolic blood pressure Perform the process.

  As a more specific configuration of the present invention, a pulse wave propagation time calculation unit that calculates a pulse wave propagation time based on the detection signal of the pulse wave detection unit described above, and a living body based on the detection signal of the impedance detection unit An impedance calculation unit that calculates impedance and a storage unit that stores each calculation result are provided, and the pulse wave propagation time calculation unit, the impedance calculation unit, and the storage unit may be integrated.

  In the present invention, if the configuration in which the light emitting and receiving device described above is fixed to a holder and the current applying electrode and the voltage detecting electrode are integrated in the holder is adopted, the pulse wave detecting means and the impedance differing in sensing method. The detection means can be combined into one.

  In the present invention, a resin is filled between the light emitting / receiving device, the current application electrode, and the voltage detection electrode, and the light receiving device, the current application electrode, and the voltage detection are filled with the sealing resin. If the configuration in which the electrodes are integrated is adopted, the pulse wave detection means and the impedance detection means having different sensing methods can be combined into one.

  In the present invention, the front side peripheral portion of the light emitting and receiving device described above is sealed with a conductive resin, and the current application electrode and the voltage detection electrode are formed with the sealing conductive resin. Can be used to combine pulse wave detection means and impedance detection means with different sensing methods into one. In addition, there is no need to separately form a current application electrode and a voltage detection electrode.

  In the present invention, blood pressure measurement using pulse waves and measurement of body fat percentage by detection of bioimpedance can be performed using the pulse wave detection means and impedance detection means having the above characteristics.

  According to the present invention, the pulse wave detecting means for detecting the pulse wave correlated with the blood pressure, and the impedance detecting means including the current applying electrode and the voltage detecting electrode for detecting the impedance of the living body are provided. Therefore, the maximum blood pressure, the minimum blood pressure, the pulse rate, and the body fat percentage can be simultaneously measured with a single sensing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Example 1>
FIG. 1 is a perspective view schematically showing an example of the biological information detection apparatus of the present invention.

  The living body information detection apparatus of this example includes a light emitting / receiving device 1 as a pulse wave detection means, an impedance detection means 2, a separator 3, a visible light cut filter 4, a hollow rectangular holder 5, and the like.

  The light emitting / receiving device 1 is disposed inside the holder 5. The light emitting / receiving device 1 includes a light emitting device 11 and a light receiving device 12 mounted on a substrate 10, and the light emitting device 11 and the light receiving device 12 are sealed with a sealing resin 13.

  The impedance detection means 2 includes a current application electrode 21 and a voltage detection electrode 22. These current application electrode 21 and voltage detection electrode 22 are formed along the peripheral edge of the front surface of the rectangular holder 5. The current application electrode 21 and the voltage detection electrode 22 are divided by the separator 3. The visible light cut filter 4 is located at a position in front of the light emitting / receiving device 1 (on the optical axis of the light emitting device 11 and the light receiving device 12) at the center between the current application electrode 21 and the voltage detection electrode 22. Is arranged.

  As the light emitting device 11 of the light emitting / receiving device 1, it is preferable to use a light emitting device having an emission wavelength in the wavelength range of 360 to 660 nm in consideration of the absorption light characteristic of oxyhemoglobin in blood. Similarly, for the light receiving device 12, it is preferable to use a light receiving device having a light receiving sensitivity wavelength in a wavelength band of 360 to 660 nm.

  According to the biological information detecting apparatus of this example, the light emitting / receiving device (pulse wave detecting means) 1 for sensing the blood flow and the impedance detecting means 2 for detecting the impedance of the human body are integrated. Can measure the systolic blood pressure, the diastolic blood pressure, the pulse and the body fat percentage at the same time. Furthermore, in the biological information detection device of this example, since the protrusion 5A is formed in the peripheral portion on the front side of the light emitting and receiving device 1 by the wall of the holder 5, when detecting the pulse wave, Even if the front surface of the biological information detection device is pressed against a human body with a pressure higher than necessary, the pressing force is regulated by the protrusions 5A on the periphery of the light emitting / receiving device 1, so that a pulse wave can always be sensed with an appropriate pressure. it can.

  In the biological information detecting device of this example, if a visible light cut resin is used for the sealing resin 13 of the light receiving and emitting device 1, it is arranged at the center between the current applying electrode 21 and the voltage detecting electrode 22. The visible light cut filter 4 is not particularly necessary, and the front of the light receiving and emitting device 1 may be covered with a transparent cover or the like.

<Example 2>
FIG. 2 is a perspective view schematically showing another example of the biological information detecting apparatus of the present invention.

  The living body information detection apparatus of this example includes a light emitting / receiving device 101 as a pulse wave detecting means, an impedance detecting means 102, a separator 103, a visible light cut filter 104, and the like. 102 is integrated with a sealing resin 105.

  The light emitting / receiving device 101 includes a light emitting device 111 and a light receiving device 112 mounted on a substrate 110. The light emitting device 111 and the light receiving device 112 are sealed with a sealing resin (primary mold resin) 113. Has been.

  The impedance detection means 102 includes a current application electrode 121 and a voltage detection electrode 122. The current application electrode 121 and the voltage detection electrode 122 are formed along the peripheral edge of the front surface of the sealing resin 105 (integration resin) which is a secondary molding resin. The current application electrode 121 and the voltage detection electrode 122 are divided by the separator 103. The visible light cut filter 104 is located at the center between the current application electrode 121 and the voltage detection electrode 122 at a position in front of the light receiving and emitting device 101 (on the optical axis of the light emitting device 111 and the light receiving device 112). Is arranged.

  As the light emitting device 111 of the light emitting / receiving device 101, it is preferable to use a light emitting device having an emission wavelength in a wavelength range of 360 to 660 nm in consideration of absorption light characteristics of oxyhemoglobin in blood. Similarly, for the light receiving device 112, it is preferable to use a light receiving device having a light receiving sensitivity wavelength of 360 to 660 nm.

  The living body information detection apparatus having the structure shown in FIG. 2 has the visible light cut filter 104 disposed in the center between the current application electrode 121 and the voltage detection electrode 122 of the impedance detection means 102, and the light receiving and emitting apparatus. In a state where the current application electrode 121 and the voltage detection electrode 122 are installed so that the visible light cut filter 104 is positioned in front of the light source 101 (on the optical axis of the light emitting device 111 and the light receiving device 112), the light receiving and emitting device 101. By filling the sealing resin 105 between the current application electrode 121 and the voltage detection electrode 122, the light emitting / receiving device 101 as the pulse wave detection means and the impedance detection means 102 are integrated. Can do.

  According to the living body information detecting apparatus of this example, the light emitting / receiving device (pulse wave detecting means) 101 for sensing the blood flow and the impedance detecting means 102 for detecting the impedance of the human body are integrated by resin sealing. Therefore, the maximum blood pressure, the minimum blood pressure, the pulse rate, and the body fat percentage can be simultaneously measured with a single sensing.

  In the biological information detecting apparatus of this example, if a visible light cut resin is used as the sealing resin 105 used for the secondary mold, it is arranged at the center between the current application electrode 121 and the voltage detection electrode 122. The visible light cut filter 104 is not particularly necessary, and a transparent cover or the like may be disposed in front of the light emitting / receiving device 101.

<Example 3>
FIG. 3 is a perspective view schematically showing another example of the biological information detecting apparatus of the present invention.

  The living body information detection apparatus of this example includes a light emitting / receiving device 201 serving as a pulse wave detection unit, an impedance detection unit 202, a separator 203, and a visible light cut filter 204.

  The light emitting / receiving device 201 includes a light emitting device 211 and a light receiving device 212 mounted on a substrate 210. The light emitting device 211 and the light receiving device 212 are sealed with a sealing resin (primary mold resin) 213. Has been.

  As the light emitting device 211 of the light receiving and emitting device 201, it is preferable to use a light emitting device having an emission wavelength in the wavelength range of 360 to 660 nm in consideration of the absorption light characteristic of oxyhemoglobin in blood. Similarly, for the light receiving device 212, it is preferable to use a light receiving device having a light receiving sensitivity wavelength of 360 to 660 nm.

  In the biological information detecting apparatus of this example, the space on the front side of the light emitting / receiving device 201 is resin-sealed (secondary mold) with the conductive resin 205, and the conductive resin 205 is separated by the separator 203. The current application electrode 221 and the voltage detection electrode 222 constituting the impedance detection means 202 are formed by the two-part conductive resin 205 in the symmetrical shape, and the conductive property A visible light cut filter at a position in front of the light emitting / receiving device 201 (on the optical axis of the light emitting device 211 and the light receiving device 212) at the center between the current application electrode 221 and the voltage detection electrode 222 made of resin 205. It is characterized in that 204 is arranged.

  The living body information detection apparatus having the structure shown in FIG. 3 includes the visible light cut filter 204 disposed in front of the light emitting / receiving device 201 (on the optical axes of the light emitting device 211 and the light receiving device 212) and the front of the light receiving / emitting device 201. By filling the space on the front side of the light emitting / receiving device 201 with the conductive resin 205 in a state where the separator 203 is disposed at a predetermined position on the side (division position between the current application electrode 221 and the voltage detection electrode 222), It can be obtained by integrating the light emitting / receiving device 201 and the visible light cut filter 204 and simultaneously forming the current application electrode 221 and the voltage detection electrode 222 that constitute the impedance detection means 202.

  According to the biological information detection device of this example, the conductive resin 205 is filled in the space in front of the light emitting / receiving device (pulse wave detection means) 201 that senses the blood flow, and the current application electrode 221 and the voltage detection are performed. Since the electrode 222 is formed, the light emitting / receiving device 201 and the impedance detection means 202 for detecting the impedance of the human body can be integrated, and the maximum blood pressure, the minimum blood pressure, the pulse, the body fat percentage, Can be measured simultaneously. Furthermore, since the current application electrode 221 and the voltage detection electrode 222 are formed by filling the conductive resin 205, it is not necessary to separately form the impedance detection means 202, and the number of components can be reduced. .

  In the biological information detecting apparatus of this example, if a visible light cut resin is used as the conductive resin 205 used for the secondary mold, the visible light cut filter 204 is not particularly necessary, and a transparent cover or the like is used for the light receiving and emitting apparatus 201. You may make it arrange | position ahead.

<Example 4>
FIG. 5 is a block diagram showing a system configuration of the biological information detecting apparatus of the present invention.

  First, in order to measure blood pressure, it is necessary to sense pulse waves at a plurality of locations (in this example, 2 locations). In this example, two biological information detection devices shown in FIG. The devices (pulse wave detection means) 1 and 1 are installed on a part of the fingertip (sensing unit), and further, impedance detection comprising a current application electrode 21 and a voltage detection electrode 22 for measuring the impedance of the human body. Means 2 and 2 are installed on a part of the fingertip. The output of the light receiving device 12 of each light receiving and emitting device 1 installed in this way passes through the amplifier 6 and the filter circuit 7 and then is input to the arithmetic unit 303 described later.

  In this example, as a measurement system, a current source 301 that applies a current to each of the current application electrodes 21 and 21, a voltmeter 302 that measures a voltage between the two voltage detection electrodes 22 and 22, and a calculation unit (CPU) 303, input device 304, storage device (RAM / ROM) 305, display device 306, communication module 307, and the like.

  Next, the measurement process of this example will be described.

  First, in this example, the maximum blood pressure and the minimum blood pressure value measured by another blood pressure monitor, and information such as age, height, weight, and sex are input from the input device 304 and stored in the storage device 305. . Next, as shown in FIG. 5, in a state where the two light receiving / emitting devices 1 and 1 and the two impedance detection means 2 and 2 are respectively attached to the left and right fingers, the light receiving and emitting devices 1 and 1 are driven, Measurement is performed by applying a current from the current source 301 to each of the current application electrodes 21 and 21. By executing this measurement, the pulse wave signals from the two light receiving devices 12, the voltage signal measured by the voltmeter 302, and the applied current value of the current source 301 are input to the calculation unit 303. The calculation unit 303 obtains the pulse wave propagation time from the two input pulse wave signals, obtains the impedance value of the human body based on the signals from the voltmeter 302 and the current source 301, and the pulse wave propagation time and impedance value. Based on the already inputted maximum blood pressure, minimum blood pressure value, age, height, weight, sex, etc., the maximum blood pressure, minimum blood pressure, pulse and body fat percentage are obtained. These calculation results are displayed on the display device 306 and stored in the storage device 305. In addition, the calculation results of the systolic blood pressure, the diastolic blood pressure, the pulse rate, and the body fat percentage may be transmitted / received to / from another external device using the communication module 307.

  In this example, the method of calculating blood pressure and body fat percentage will be briefly described. As for blood pressure, the highest blood pressure value and the lowest blood pressure value (values already input) measured by another sphygmomanometer, and the pulse By obtaining a relational expression between the actual maximum blood pressure value and the minimum blood pressure value based on the wave propagation time and correcting the actual measured blood pressure value using the relational expression, high measurement accuracy can be obtained. The body fat percentage is determined based on a conversion formula that is set in advance using physical information such as age, height, weight, and gender input by the input device 304 and a measured value of impedance. The body fat percentage of the measurer can be calculated.

  The living body information detection apparatus of the present invention can be effectively used to simultaneously measure the systolic blood pressure, the systolic blood pressure, the pulse, and the body fat percentage with a single sensing.

It is a perspective view which shows typically an example of the biometric information detection apparatus of this invention. It is a perspective view which shows typically the other structure of the biometric information detection apparatus of this invention. It is a perspective view which shows typically another structure of the biometric information detection apparatus of this invention. The light absorption characteristic of oxyhemoglobin is shown. It is a block diagram which shows the system configuration | structure of the biometric information detection apparatus of this invention.

Explanation of symbols

1 Light emitting / receiving device (pulse wave detection means)
DESCRIPTION OF SYMBOLS 10 Board | substrate 11 Light-emitting device 12 Light-receiving device 13 Sealing resin 2 Impedance detection means 21 Current application electrode 22 Voltage detection electrode 3 Separator 4 Visible light cut filter 5 Holder 6 Amplifier 7 Filter circuit 101 Light emitting / receiving device 110 Substrate 111 Light emitting device 112 Photodetector 113 Sealing resin (primary mold)
102 Impedance detection means 121 Current application electrode 122 Voltage detection electrode 103 Separator 104 Visible light cut filter 105 Sealing resin (secondary mold)
201 Light emitting / receiving device (pulse wave detecting means)
210 Substrate 211 Light emitting device 212 Light receiving device 213 Sealing resin (primary mold)
202 Impedance detection means 221 Current application electrode 222 Voltage detection electrode 203 Separator 204 Visible light cut filter 205 Conductive resin (secondary mold)
301 Current source 302 Voltmeter 303 Control unit (CPU)
304 Storage device (RAM / ROM)
305 Input device 306 Display device 307 Communication module

Claims (19)

  It is provided with a pulse wave detection means comprising a light emitting and receiving device for detecting the pulse wave by detecting the movement of blood sent from the heart as a pulse wave, and an impedance detection means comprising a current application electrode and a voltage detection electrode. A biological information detection device characterized by the above.   The living body information detecting apparatus according to claim 1, wherein a plurality of light receiving devices constituting the light receiving and emitting device are mounted.   The living body information detecting device according to claim 1, wherein a plurality of light emitting devices constituting the light emitting / receiving device are mounted.   The biological information detection device according to claim 1, wherein a plurality of light emitting devices and light receiving devices constituting the light emitting / receiving device are mounted.   The living body according to any one of claims 1 to 4, wherein the light emitting wavelength of the light emitting device and the light receiving sensitivity wavelength of the light receiving device constituting the light emitting / receiving device are near infrared light or wavelengths in the infrared light region. Information detection device.   6. The biological information detecting device according to claim 5, wherein the light emission wavelength of the light emitting device and the light receiving sensitivity wavelength of the light receiving device are in a wavelength band of 360 to 660 nm.   6. The biological information detection apparatus according to claim 5, wherein the light receiving device is resin-sealed with a resin containing a component that cuts visible light.   6. The biological information detection device according to claim 5, wherein a visible light cut filter is disposed in front of the light receiving surface of the light receiving device.   6. The biological information detection apparatus according to claim 5, wherein the light emitting device is resin-sealed with a resin containing a component that cuts visible light.   6. The biological information detection apparatus according to claim 5, wherein a visible light cut filter is disposed in front of the light emitting unit of the light emitting apparatus.   The biological information detection device according to claim 1, wherein IrDA is mounted on the light receiving and emitting device of the pulse wave detecting means.   In the biological information detection device, a protrusion is provided on the periphery of the pulse wave detection means so that a part of the human body contacts the pulse wave detection means with an optimal pressure when detecting the pulse wave. The biological information detection device according to claim 1, wherein the biological information detection device is a biological information detection device.   The biological information detection device according to any one of claims 1 to 12, wherein the pulse wave detection means and the impedance detection means are integrated so as to be detected at the same location.   The biological information detection apparatus according to claim 13, wherein the pulse wave detection means and the impedance detection means are arranged in at least two places.   Pulse wave propagation time calculation means for calculating pulse wave propagation time based on the detection signal of the pulse wave detection means, impedance calculation means for calculating impedance based on the detection signal of the impedance detection means, and storing the calculation results The biological information detection apparatus according to claim 1, further comprising a storage unit configured to perform storage.   The biological information according to claim 1, wherein the light emitting and receiving device is fixed to a holder, and the current application electrode and the voltage detection electrode are integrated with the holder. Detection device.   Resin is filled between the light emitting / receiving device and the current applying electrode and the voltage detecting electrode, and the light receiving / emitting device, the current applying electrode, and the voltage detecting electrode are integrated with the sealing resin. The living body information detecting device according to claim 1, wherein the living body information detecting device is formed.   A front peripheral portion of the light emitting and receiving device is sealed with a conductive resin, and the current application electrode and the voltage detection electrode are formed of the sealing conductive resin. The biological information detection apparatus according to any one of claims 1 to 15. The biological information detection apparatus according to claim 1, wherein blood pressure, pulse, and body fat percentage can be measured.

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