JP2016067480A - Bio-information detection apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bio-information detection apparatus capable of detecting a warning sign of fainting or onset of fainting, while suppressing physical burden on a test object.SOLUTION: A bio-information detection apparatus 100 includes: a pulse wave information measurement unit 110 for measuring pulse wave information of a test object; an event determination unit 120 for determining whether or not a fainting event such as a warning sign of fainting or onset of the fainting occurs in the test object on the basis of the measured pulse wave information; and a control unit 130 that, when it is determined that the fainting event occurs, performs at least one processing of storage processing of the pulse wave information when the fainting event occurs, and notification processing of the fainting event.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a biological information detection device and the like.

  According to the Syncope Diagnosis and Treatment Guidelines (Revised 2012), in a survey of 3,877 fainting patients in the United States, 381 (9.8%) patients had fainting attacks while driving I know that. If you faint while driving a car, it is very likely and dangerous because it will immediately lead to an accident. According to the above-mentioned guidelines, patients who have a fainting attack while driving a car are relatively younger than men who have a history of fainting but have no experience of a fainting attack while driving. It is known to be more common in patients with a history of vascular disease. Therefore, it is important to monitor the onset of syncope and to diagnose the cause of syncope at an early stage. As an invention relating to detection of the cause of fainting, there is a conventional technique described in Patent Document 1. Patent Document 1 devises a technique for monitoring the state of a subject at the time of fainting using a patch type ECG (electrocardiogram) and a pulse wave that can be easily attached to the subject.

Special table 2011-505891 gazette

  Fainting factors include orthostaticity, reflex (neurogenic), and cardiogenicity. In particular, if there is a suspicion of cardiogenicity and arrhythmia, an implantable electrocardiograph is used, but it must be implanted under the skin and the load on the human body is high. Many patients are not implanted.

  Then, although the method described in the above-mentioned patent document 1 is devised, the patch type ECG needs to attach an electrode to the chest like a normal ECG, and the skin will be worn if it is worn for a long time. There was a fear, it was not suitable for long-time measurement.

  According to some aspects of the present invention, it is possible to provide a biological information detection apparatus and the like that can detect a sign of fainting or the onset of fainting while suppressing a physical burden on the subject.

  According to one aspect of the present invention, a pulse wave information measurement unit that measures pulse wave information of a subject, and a fainting sign or a fainting syncope event occurs in the subject based on the measured pulse wave information. An event determination unit that determines whether or not the syncope event has occurred, and at least one of the storage process of the pulse wave information and the notification process of the syncope event when the syncope event occurs And a biological information detecting device including a control unit that performs the above process.

  In one aspect of the present invention, pulse wave information is measured, and based on the measured pulse wave information, it is determined whether or not a fainting sign or a fainting syncope event has occurred in the subject. When it is determined that a fainting event has occurred, at least one of a pulse wave information storage process and a fainting event notification process when the fainting event occurs is performed.

  Thus, it is possible to detect a fainting sign or fainting episode while suppressing a physical burden on the subject.

  In the aspect of the invention, the event determination unit may determine that the fainting event has occurred in the subject when the subject is determined to be in a bradycardic state based on the pulse wave information. You may judge.

  This makes it possible to store pulse wave information when the subject is in a bradycardia state, notify that the subject is in a bradycardia state, and the like.

  In one aspect of the present invention, the event determination unit may determine that the subject is in the bradycardia state when the pulse rate specified based on the pulse wave information is less than a first threshold value. You may judge.

  As a result, by adjusting the first threshold, it is possible to adjust the state of the subject that is determined to be in the bradycardia state.

  In one aspect of the present invention, the event determination unit determines that the fainting event has occurred in the subject when the subject is determined to be in a tachycardia state based on the pulse wave information. You may judge.

  This makes it possible to store pulse wave information when the subject is in a tachycardia state, notify that the subject is in a tachycardia state, and the like.

  Moreover, in one aspect of the present invention, the event determination unit has a first pulse rate that is specified based on the pulse wave information, and the pulse rate specified based on the pulse wave information is greater than or equal to a second threshold value. When the pulse wave amplitude at the second timing after the first timing is smaller than the pulse wave amplitude at the timing, the subject may be determined to be in the tachycardia state.

  As a result, by adjusting the second threshold, it is possible to adjust the state of the subject that is determined to be in the tachycardia state.

  Moreover, in one aspect of the present invention, the event determination unit determines that the fainting event has occurred in the subject when it is determined that the subject is in a pulseless state based on the pulse wave information. You may judge.

  As a result, it is possible to store pulse wave information when the subject is in a pulse-free state, to notify that the subject is in a pulse-free state, and the like.

  In the aspect of the invention, the event determination unit may detect the pulse wave information when a pulse rate specified based on the pulse wave information is equal to or more than a third threshold value and less than a fourth threshold value. In the pulse waveform specified based on the above, if the pulse is not detected over a given period, the subject may be determined to be in the pulse missing state.

  Accordingly, for example, by adjusting a given period, it is possible to adjust the state of the subject that is determined to be in a pulse-free state.

  In one aspect of the present invention, the event determination unit generates the fainting event in the subject when the subject is determined to be in an atrial fibrillation state based on the pulse wave information. May be determined.

  This makes it possible to store pulse wave information when the subject is in an atrial fibrillation state, notify that the subject is in a pulse-free state, and the like.

  In one aspect of the present invention, the event determination unit generates the fainting event in the subject when it is determined that the blood oxygen saturation level of the subject is equal to or lower than a predetermined set value. May be determined.

As a result, it is possible to store pulse wave information when the blood oxygen saturation level (SpO ₂ ) of the subject is equal to or lower than a given set value, or to notify that the pulse is absent. Become.

  In one aspect of the present invention, when the event determining unit determines that the subject has fallen due to fainting based on body motion sensor information obtained from a body motion sensor, the syncope event is You may determine with having generate | occur | produced in the subject.

  This makes it possible to store pulse wave information when the subject falls due to fainting.

  In one aspect of the present invention, the pulse wave information at the time of occurrence of the fainting event includes at least one information of a pulse rate at the time of occurrence of the fainting event and a pulse wave waveform at the time of occurrence of the fainting event. May be included.

  Thereby, at least one of the event pulse rate and the event pulse wave waveform can be notified by the notification unit.

  In the aspect of the invention, the control unit may output the stored pulse wave information at the time of occurrence of the fainting event as notification information notified by the notification unit.

  This makes it possible for the subject, doctor, etc. to know the pulse wave information at the time of the event occurrence.

  In one aspect of the present invention, the control unit obtains autonomic nerve activity information of the subject based on the pulse wave information, and the autonomic nerve activity information is included in the pulse wave information at the time of occurrence of the fainting event. And the autonomic nerve activity information may be output as notification information notified by the notification unit.

  This makes it possible for a doctor or the like to know information about the autonomic nerve activity of the subject when the fainting event occurs.

  In the aspect of the invention, the event determination unit may determine whether or not the fainting event has occurred based on reference pulse wave information for determination.

  This makes it possible to determine whether or not the currently acquired pulse wave information is abnormal with respect to the reference pulse wave information.

  In the aspect of the invention, the reference pulse wave information may be the pulse wave information corresponding to a timing when an operation by a user is received.

  Thereby, even if the reference pulse wave information is not registered in advance, the reference pulse wave information can be newly registered every time the subject performs the measurement process.

  In one aspect of the present invention, the event determination unit compares the reference pulse wave information with the pulse wave information measured by the pulse wave information measurement unit to determine whether the fainting event has occurred. It may be determined whether or not.

  Accordingly, it can be determined that a fainting event has occurred when it can be determined that an abnormality such as bradycardia or tachycardia has occurred in the subject as compared to the normal time.

The system configuration example of this embodiment. FIG. 2A to FIG. 2D are explanatory diagrams of pulse wave waveforms when there is a sign of fainting. FIGS. 3A to 3E are explanatory diagrams of fainting index information. Explanatory drawing of a pulse coefficient. The flowchart explaining the flow of a process of this embodiment. The flowchart explaining the flow of detection processing of a fainting event. The flowchart explaining the flow of an alerting | reporting process. The flowchart explaining the flow of initial setting. The other flowchart explaining the flow of the detection process of fainting event. The flowchart explaining the flow of a comparison process with a 1st event pulse. The other flowchart explaining the flow of an alerting | reporting process. The flowchart explaining the flow of the specific process of fainting index information. FIG. 13A and FIG. 13B are external views of the biological information detection apparatus of this embodiment. The external view of the biological information detection apparatus of this embodiment. Explanatory drawing about mounting | wearing of a biometric information detection apparatus and communication with information processing apparatus. 16A and 16B are explanatory diagrams of display images.

  Hereinafter, this embodiment will be described. In addition, this embodiment demonstrated below does not unduly limit the content of this invention described in the claim. In addition, all the configurations described in the present embodiment are not necessarily essential configuration requirements of the present invention.

1. Outline This embodiment relates to a biological information detection device (syncope detection device) using a wearable pulse wave measurement device that can be easily attached. The wearable pulse wave measuring device is, for example, a wrist watch type. The biological information detection apparatus of this embodiment is equipped with a pulse wave sensor and other sensors, and records a pulse wave in an internal memory while constantly detecting the pulse wave. Then, the pulse rate or pulse wave amplitude value specified from the pulse wave is compared with two preset values, and when the pulse rate satisfies a given condition, a warning is sent to the subject, Record the pulse wave as an event pulse. Specifically, when the pulse rate is less than the first threshold (eg, less than 40 bpm), or the pulse rate is greater than or equal to the second threshold (eg: 200 bpm or more), the pulse wave amplitude tends to decrease. When a pulse wave is lost for 2 seconds or more, a warning is notified and the pulse wave at that time is recorded as an event pulse. The event pulse is recorded until the preset event pulse recording capacity is reached.

  In addition to the above causes, syncope due to arrhythmia may be caused by atrial fibrillation. Therefore, in the present embodiment, when a known atrial fibrillation determination process is performed and it is determined that the atrial fibrillation determination ratio exceeds the set value, a warning is given as the possibility of fainting, and the pulse wave at that time is displayed. Record as an event pulse.

Furthermore, when fainting, it is also known that SpO ₂ (blood oxygen saturation) decreases, and when SpO ₂ detection processing is performed, the SpO ₂ value falls below a set value (for example, 80%) Then, a warning is given that there is a possibility of fainting, and the pulse wave at that time is recorded as an event pulse.

  In each of the above processes, a pulse wave may be transmitted to an electronic device such as a smartphone or a PC using wireless communication means, and they may be recorded. Furthermore, as long as the biological information detection device and the electronic device can communicate with each other, the electronic device may be able to notify the warning.

  In addition, the subject may fall if she faints. Therefore, when the multi-axis acceleration sensor built in the wearable pulse wave measuring device exceeds the set value, it is detected as a fall due to fainting and a warning is notified, and a pulse wave for several minutes before and after is recorded as an event pulse.

  In the present embodiment, as described above, after the event pulse is recorded, the data recorded by the doctor or the like is analyzed. When analyzing data, the biological information detection device or an information processing device connected to the biological information detection device by communication calculates the event pulse rate based on the stored pulse wave data of each event pulse. To do. The event pulse rate is a pulse rate in a given pulse wave interval centered around a value having the lowest pulse wave amplitude value in a series of pulse wave data recorded as an event pulse.

  At that time, the biological information detection device or the like calculates LF / HF as an index representing the vagus nerve activity of the subject. Further, the normal pulse rate is calculated from pulse wave data other than the event pulse.

  Then, the display unit displays the event pulse wave, event pulse rate, vagus nerve activity and normal pulse wave, normal pulse rate, and the like.

  From this display, the doctor determines whether the sign of fainting of the subject is due to arrhythmia (tachycardia or bradycardia) or vagus nerve. As described above, these analysis processing and display processing may be performed by an electronic device (information processing apparatus) such as a smartphone or a PC.

  As described above, according to the present embodiment, unlike conventional ones in which an electrode is attached to the skin and ECG is detected or an implantable electrocardiograph, the pulse wave of the subject in daily life is simple and long. It becomes possible to monitor, and it becomes possible to assist in monitoring and diagnosis of patients with fainting symptoms.

2. System Configuration Example Next, FIG. 1 shows a configuration example of the biological information detection apparatus of the present embodiment.

  The biological information detection apparatus 100 of the present embodiment includes a pulse wave information measurement unit 110, an event determination unit 120, and a control unit 130. The biological information detection apparatus 100 is not limited to the configuration in FIG. 1, and various modifications such as omitting some of these components or adding other components are possible. Part or all of the functions of the biological information detection apparatus 100 are realized by, for example, a wearable pulse wave measurement apparatus. In addition, some or all of the functions of the biological information detection apparatus 100 of the present embodiment may be realized by a mobile electronic device or a server connected to the biological information detection apparatus 100 by communication.

  Next, processing performed in each unit will be described.

  The pulse wave information measurement unit 110 measures the pulse wave information of the subject. Here, the pulse wave information measurement unit 110 is, for example, a pulse wave sensor. The pulse wave sensor is a sensor for detecting a pulse wave sensor signal (pulse wave information). For example, a photoelectric sensor or the like can be considered. However, the photoelectric sensor is not necessarily used as the pulse wave sensor, and other sensors such as a sensor using ultrasonic waves may be used. And not only one sensor is provided as a pulse wave sensor, but a plurality of types of sensors may be provided. When a plurality of pulse wave sensors are provided, the sensors may be provided at different positions (parts) of the biological information detection device 100.

  Then, the event determination unit 120 determines whether or not a fainting sign or a fainting fainting event has occurred in the subject based on the measured pulse wave information.

  When it is determined that a fainting event has occurred, the control unit 130 performs at least one of a pulse wave information storage process and a fainting event notification process when the fainting event occurs. Note that the functions of the event determination unit 120 and the control unit 130 can be realized by hardware such as various processors (CPU or the like), ASIC (gate array or the like), a program, or the like.

  That is, in this embodiment, pulse wave information is measured, and based on the measured pulse wave information, it is determined whether or not a fainting sign or a fainting fainting event has occurred in the subject. When it is determined that a fainting event has occurred, at least one of a pulse wave information storage process and a fainting event notification process when the fainting event occurs is performed.

  Thereby, for example, the pulse wave information at the time of the occurrence of the fainting event is stored, and a doctor or the like can later analyze the pulse wave information at the time of the occurrence of the fainting event to identify the cause of the fainting. In addition, when a fainting event occurs, it is possible to prevent an accident due to the onset of fainting by notifying the subject to that effect.

  In addition, the biological information detection apparatus according to the present embodiment is, for example, a wristwatch-type wearable pulse wave measurement apparatus, which measures a pulse wave by, for example, light or ultrasonic waves. It doesn't implant an electrocardiograph or rash your skin. That is, even when the subject always wears the biological information detection device, the physical burden on the subject can be suppressed.

  As described above, according to the present embodiment, it is possible to detect a sign of fainting or the onset of fainting while suppressing a physical burden on the subject.

3. Next, the method of this embodiment will be described. First, the fainting event determination process will be described. In the present embodiment, as described above, it is determined that a fainting event has occurred when the subject is in a bradycardia state, a tachycardia state, a pulseless state, or the like. Below, a specific description will be given for each case.

  First, the event determination unit 120 determines that a fainting event has occurred in the subject when it is determined that the subject is in a bradycardia state based on the pulse wave information.

  This makes it possible to store pulse wave information when the subject is in a bradycardia state, notify that the subject is in a bradycardia state, and the like.

  A specific example will be described. First, it is assumed that the pulse wave of the subject normally has a waveform as shown in FIG. In the graph of FIG. 2A, the vertical axis represents amplitude and the horizontal axis represents time. The same applies to the graphs of FIGS. 2B to 2D and FIGS. 3A to 3E.

  In the example of FIG. 2A, the pulse rate is 60 bpm and the amplitude is 100. In the other graphs of FIGS. 2B to 2D and FIGS. 3A to 3E, the amplitude of the pulse wave waveform of FIG. , Representing its amplitude.

  Then, the event determination unit 120 determines that the subject is in a bradycardia state when the pulse rate specified based on the pulse wave information is less than the first threshold.

  For example, in the example of FIG. 2B, the pulse rate is 30 bpm. Assuming that the first threshold value for determining the bradycardia state is 40 bpm, for example, in the case of FIG. 2B, the pulse rate is less than the first threshold value, and therefore the subject is in the bradycardia state. Can be determined.

  As a result, by adjusting the first threshold, it is possible to adjust the state of the subject that is determined to be in the bradycardia state.

  Further, the event determination unit 120 determines that a fainting event has occurred in the subject when it is determined that the subject is in a tachycardia state based on the pulse wave information.

  This makes it possible to store pulse wave information when the subject is in a tachycardia state, notify that the subject is in a tachycardia state, and the like.

  Specifically, the event determination unit 120 has a pulse rate specified based on the pulse wave information that is equal to or greater than a second threshold and is based on the pulse wave amplitude at the first timing specified based on the pulse wave information. However, when the pulse wave amplitude at the second timing after the first timing is smaller, it is determined that the subject is in a tachycardia state.

  For example, in the example of FIG. 2C, the pulse rate is 220 bpm. If the second threshold value for determining that the state is a tachycardia is 200 bpm, for example, in the case of FIG. 2C, the pulse rate is equal to or greater than the second threshold value. Furthermore, in the example of FIG. 2C, the initial amplitude of the pulse waveform stored as the event pulse was 60, whereas the amplitude gradually decreased to 50, 40, 30, 20, and 10. Therefore, it can be determined that the subject is in a tachycardia state.

  As a result, by adjusting the second threshold, it is possible to adjust the state of the subject that is determined to be in the tachycardia state.

  Further, the event determination unit 120 determines that a fainting event has occurred in the subject when it is determined that the subject is in a pulse missing state based on the pulse wave information.

  As a result, it is possible to store pulse wave information when the subject is in a pulse-free state, to notify that the subject is in a pulse-free state, and the like.

  Specifically, the event determination unit 120 is specified based on the pulse wave information when the pulse rate specified based on the pulse wave information is greater than or equal to the third threshold and less than the fourth threshold. In the pulse wave waveform, when the pulsation is not detected over a given period, it is determined that the subject is in a pulse missing state.

  For example, in the example of FIG. 2D, the pulse rate is 60 bpm. Here, assuming that the third threshold value for determining that there is a pulse missing state is 40 bpm and the fourth threshold value is 200 bpm, in the case of FIG. 2C, the pulse rate is equal to or higher than the third threshold value. Is less than the threshold value. The third threshold value may be the same value as the first threshold value, or may be a different value. Similarly, the fourth threshold value may be the same value as the second threshold value, or may be a different value. However, the fourth threshold value is larger than the third threshold value.

  Furthermore, in the example of FIG. 2D, since there is a period during which pulsation cannot be detected for 3.2 seconds, it can be determined that the subject is in a pulse-missing state. Here, a given period in which pulsation cannot be detected is a period of 2 seconds or more.

  Accordingly, for example, by adjusting a given period, it is possible to adjust the state of the subject that is determined to be in a pulse-free state.

  In the present embodiment, in addition to the above, for example, when the event determination unit 120 determines that the subject is in an atrial fibrillation state based on the pulse wave information, a fainting event has occurred in the subject. judge. Whether or not the subject is in an atrial fibrillation state is determined using a known method.

  This makes it possible to store pulse wave information when the subject is in an atrial fibrillation state, notify that the subject is in a pulse-free state, and the like.

Furthermore, the event determination unit 120 also determines that a fainting event has occurred in the subject even when it is determined that the blood oxygen saturation (SpO ₂ ) of the subject is equal to or less than a given set value. For example, when it is determined that the given set value is 80% and the blood oxygen saturation (SpO ₂ ) is 80% or less, it is determined that the fainting event has occurred in the subject.

As a result, it is possible to store pulse wave information when the blood oxygen saturation level (SpO ₂ ) of the subject is equal to or lower than a given set value, or to notify that the pulse is absent. Become.

  The event determination unit 120 determines that a fainting event has occurred in the subject when it is determined that the subject has fallen due to fainting based on body motion sensor information obtained from a body motion sensor (not shown). To do. In this case, it is assumed that a faint has not occurred, but fainting has occurred and the person has fallen.

  This makes it possible to store pulse wave information when the subject falls due to fainting.

  Then, the control unit 130 outputs the stored pulse wave information at the time of occurrence of the fainting event as notification information notified by the notification unit 300.

  This makes it possible for the subject, doctor, etc. to know the pulse wave information at the time of the event occurrence.

  Here, the pulse wave information at the time of the occurrence of the fainting event includes the pulse rate at the time of the occurrence of the fainting event (hereinafter referred to as the event pulse rate) and the pulse waveform at the time of the occurrence of the fainting event (hereinafter referred to as the event pulse wave waveform). Contains at least one piece of information. However, the pulse wave information at the time of occurrence of the fainting event is not limited to such information.

  Thereby, at least one of the event pulse rate and the event pulse wave waveform as shown in FIGS. 2B to 2D can be notified by the notification unit 300.

  Further, the control unit 130 obtains the autonomic nerve activity information of the subject based on the pulse wave information, and associates the autonomic nerve activity information with the pulse wave information at the time of occurrence of the fainting event, and is notified by the notifying unit 300. Autonomic nerve activity information is output as information.

  This makes it possible for a doctor or the like to know information about the autonomic nerve activity of the subject when the fainting event occurs.

  Further, the event determination unit 120 determines whether or not a fainting event has occurred based on the reference pulse wave information for determination.

  For example, in the example of FIGS. 2A to 2D described above, the reference pulse wave information includes a predetermined threshold value (40 bpm, 200 bpm, etc.) of a predetermined pulse rate, or a given pulse missing period. (2 seconds or more).

  This makes it possible to determine whether or not the currently acquired pulse wave information is abnormal with respect to the reference pulse wave information.

  In addition, the reference pulse wave information may be pulse wave information corresponding to the timing at which an operation by the user (subject) is accepted. That is, it is possible to determine that the subject is in a normal state (normal state) at the timing when the operation is received by the user for the first time, and use the pulse wave information at that time as the reference pulse wave information.

  For example, in the examples of FIGS. 2A to 2D described above, the pulse wave information (pulse rate 60 bpm, amplitude 100, etc.) in FIG. 2A is the reference pulse wave information.

  Thereby, even if the reference pulse wave information is not registered in advance, the reference pulse wave information can be newly registered every time the subject performs the measurement process.

  Then, the event determination unit 120 may determine whether or not a fainting event has occurred by comparing the reference pulse wave information with the pulse wave information measured by the pulse wave information measurement unit 110.

  For example, in the example of FIG. 2B, the current pulse rate (30 bpm) may be compared with the reference pulse rate (40 bpm) to determine that the bradycardia state is present. In the example of FIG. 2C, the current pulse rate (220 bpm) is compared with the pulse rate (20 bpm) of the reference pulse wave information, and the amplitude (50 to 10) is compared with that of FIG. By comparing with the amplitude (100) of the pulse wave waveform, it may be determined that the state is tachycardia.

  Accordingly, it can be determined that a fainting event has occurred when it can be determined that an abnormality such as bradycardia or tachycardia has occurred in the subject as compared to the normal time.

  In addition, when notifying the subject or doctor that the fainting event has occurred by the notification unit 300, it is desirable to present information that is easy to understand at a glance. A doctor or the like can read the state of the subject's fainting from the pulse wave waveform, but an index such as a numerical value is easier to judge. Also, if you can roughly determine whether an abnormality has occurred in the subject by looking at one numerical value, you can quickly determine whether it is better to examine the state of the subject at that time. It becomes possible.

  Therefore, in the present embodiment, the control unit 130 obtains fainting index information that changes depending on the sign of fainting or the onset of fainting in the subject based on the measured pulse wave information.

  The fainting index information is information used by, for example, a doctor to determine whether the subject has a sign of fainting or whether the subject has fainted. The fainting index information is, for example, a numerical value that changes in accordance with a sign of fainting in the subject or the state of the onset of fainting. More specifically, for example, in the example of FIGS. 3A to 3E, the fainting index information is a pulse wave amplitude index.

  And the control part 130 calculates | requires fainting index information based on the pulse wave amplitude information of several pulsations in a given period.

  Here, the pulsation (pulse) refers to the pulsation of the artery where the amplitude of the pulse wave is maximized. For example, in the example of FIG. 3A, since the number of times that the amplitude of the pulse wave becomes maximum is five, five pulsations are included. These five pulsations correspond to a plurality of pulsations in the given period described above.

Specifically, the pulse wave amplitude information can be obtained by the following equation (1). In the following formula (1), x _i is the amplitude of each wave of the pulse wave waveform stored as the event pulse, and i is a number indicating each wave. Further, a is a coefficient that changes according to the pulse rate of the subject to be described later.

例えば、図３（Ａ）には、通常時の脈波波形を図示しているが、この場合には、振幅が１００の波を５つ足し合わせ、係数ａ＝１を乗算して、脈波振幅指数を５００と計算する。

For example, FIG. 3A shows a pulse wave waveform at a normal time. In this case, five waves having an amplitude of 100 are added together and multiplied by a coefficient a = 1 to obtain a pulse wave. Calculate the amplitude index as 500.

  Next, FIG. 3B illustrates an example in which the pulse rate is 60 bpm, which is the same as FIG. 3A, but the amplitude gradually decreases. In this case, adding the amplitudes of the waves and multiplying by the coefficient a = 1 gives a pulse wave amplitude index of 330. When this value is compared with the value of 500 in FIG. 3 (A), the numerical value is clearly small, so that the doctor can instantly determine that some abnormality has occurred.

  FIG. 3C illustrates an example of a bradycardia state. In this case, the total value of the pulse rate is reduced to 160. When the total value is multiplied by the coefficient a = 1, the pulse wave amplitude index becomes 160. This value is clearly smaller than the value 500 in FIG. 3A, so that the doctor can instantly determine that some abnormality has occurred.

  In summary, first, the control unit 130 obtains fainting index information based on the pulse wave information corresponding to the timing when it is determined that the fainting event has occurred.

  Thereby, as will be described later, it is possible to obtain fainting index information indicating the state of the subject when the fainting event occurs.

  And the control part 130 calculates | requires fainting index information based on the total value of the pulse wave amplitude information of several pulsations in a given period. For example, in the example of FIG. 3A, a given period is a period corresponding to five waves of a pulse waveform, and a plurality of pulsations are equivalent to five waves. Furthermore, the pulse wave amplitude information is each amplitude (100) of the five waves, and the total value thereof is 500.

  Thereby, it is possible to obtain fainting index information from not only pulse wave information at a certain timing but also pulse wave information in a given period in which a fainting event has occurred. As a result, it is possible to reduce the influence of noise included in the pulse wave information and prevent a doctor or the like from making an erroneous determination.

  Further, the control unit 130 obtains the fainting index information by performing a multiplication process of the total value of the pulse wave amplitude information of a plurality of pulsations within a given period and the coefficient for calculating the fainting index information.

  This coefficient (hereinafter referred to as a pulse coefficient) is a numerical value that changes according to the pulse rate of the subject. In other words, the control unit 130 multiplies the coefficient that changes according to the pulse rate of the subject and the total value of the pulse wave amplitude information described above to obtain fainting index information.

  Specifically, the pulse coefficient is a coefficient as shown in the graph of FIG. In the graph of FIG. 4, the vertical axis is the pulse coefficient, and the horizontal axis is the pulse rate (bpm).

  For example, in the case of FIG. 3D, the pulse rate is 220 bpm, which is a tachycardia state. When the pulse rate is 220 bpm, the pulse coefficient is obtained as 0.7 from the graph of FIG. Therefore, when the total value 260 of the pulse rate in the example of FIG. 3D is multiplied by the coefficient a = 0.7, the pulse wave amplitude index becomes 182. This value is clearly smaller than the value 500 in FIG. 3A, so that the doctor can instantly determine that some abnormality has occurred.

  Also, the case of FIG. 3E is the same as the case of FIG. 3D, and since it is a tachycardia state, the pulse wave amplitude index is 266, and it can be determined that an abnormality has occurred.

  Thereby, it is possible to adjust the rate of increase / decrease in the fainting index information by adjusting the pulse coefficient.

  That is, as described in detail below, it is possible to change the fainting index information according to the pulse rate.

  The pulse coefficient increases in the first pulse rate range and decreases in the second pulse rate range in which the pulse rate is larger than the first pulse rate range. That is, the control unit 130 performs a multiplication process of the total value and a coefficient that increases in the first pulse rate range and decreases in the second pulse rate range in which the pulse rate is larger than the first pulse rate range. For fainting index information.

  In the example of FIG. 4, the range of about 40 bpm or less is the first pulse rate range, and the range of about 140 bpm or more is the second pulse rate range.

  As a result, when the subject is in a bradycardia state or a tachycardia state, the value of the fainting index information can be reduced.

  Furthermore, the pulse coefficient becomes a constant value in a third pulse rate range between the first pulse rate range and the second pulse rate range. That is, the control unit 130 performs the multiplication process of the coefficient that becomes a constant value in the third pulse rate range between the first pulse rate range and the second pulse rate range, and the total value, thereby fainting. Find index information.

  In the example of FIG. 4, the range of about 40 bpm or more and less than about 140 bpm is the third pulse rate range.

  Thereby, when the pulse rate of the subject is normal, the value of the fainting index information can be increased.

  The pulse coefficient may be, for example, a value based on the pulse wave velocity or a value based on the degree of arteriosclerosis. Here, the pulse wave propagation velocity is calculated based on the time from the timing at which the R wave is detected in the electrocardiogram to the timing at which the pulse wave is detected by the biological information detection device. At this time, a biological information detection device having an electrocardiograph and having a back cover as an electrode is attached to the left wrist of the subject. Next, the subject touches the bezel (electrode) of the biological information detection apparatus with the right hand, and the electrocardiograph in the biological information detection apparatus detects and records the lead electrocardiogram. Then, as described above, the biological information detection device obtains the pulse wave propagation speed based on the detected electrocardiogram. By configuring in this way, since the pulse coefficient can be set by combining information of the pulse wave and the electrocardiogram, a more accurate value can be set.

  Further, the control unit 130 outputs the obtained fainting index information as notification information notified by the notification unit 300.

  Thus, the notification unit 300 can notify the fainting index information, and it is possible for a doctor or the like to determine whether or not it is necessary to examine in detail the state of the subject at that time based on the fainting index information. become.

  In addition, the control unit 130 outputs information associating the pulse wave information for which the fainting index information is obtained with the fainting index information as notification information notified by the notification unit 300.

  Thereby, for example, it is possible to simultaneously display fainting index information and a pulse wave waveform corresponding to the fainting index information on the display unit. As a result, when a doctor or the like looks at the fainting index information and determines that there is an abnormality and needs to be examined in detail, the pulse wave waveform at that time can be immediately seen.

  Further, the control unit 130 outputs the fainting index information at the time of the event occurrence and the fainting index information at the normal time as notification information notified by the notification unit 300.

  This makes it possible for doctors, etc. to compare the subject's normal fainting index information with the fainting index information when a fainting event occurs, and determine whether it is necessary to examine the state of the subject at that time in detail. Etc. becomes possible.

  By doing as described above, it is possible to present to the viewer that the sign of fainting has occurred or that fainting has developed as more easily understandable information.

4). Details of Processing Next, a general flow of processing according to the present embodiment will be described with reference to the flowchart of FIG.

  First, the pulse wave information measurement unit 110 measures biological information (pulse wave information) (S501), and stores the measured biological information in an internal memory (not shown) (S502). Next, the event determination unit 120 performs event detection processing for a fainting event based on the measured biological information (S503). The detailed flow of the event detection process will be described later.

  Then, the control unit 130 determines whether or not the storage capacity of the pulse wave information of the event pulse stored in the internal memory is equal to or larger than the set value, or whether or not the measurement process of the biological information is ended (S504).

  Next, when it is determined that the storage capacity of the pulse wave information of the event pulse is less than the set value and the measurement process has not been completed, the control unit 130 determines the event pulse pulse newly detected in step S503. Wave information is stored in the internal memory (S505).

  Next, the control unit 130 performs the above-described fall detection process (S506).

  When the fainting event occurs, the control unit 130 performs at least one of the fainting event notifying process by the notifying unit 300 or the pulse wave information transmitting process of the fainting event to the external device (S507). ), The process returns to step S501. A specific flow of the notification process will be described in detail later.

  In step S504, if the control unit 130 determines that the storage capacity of the pulse wave information of the event pulse is equal to or greater than the set value, or the measurement process is ended, the process ends.

  Next, details of the event detection process will be described with reference to the flowchart of FIG.

  First, the pulse wave information measurement unit 110 specifies pulse wave information from the biological information detected in step S501 in FIG. 5 (S601). The biological information may include various measurement data related to the subject's body in addition to the pulse wave information.

  And the event determination part 120 specifies a pulse rate from pulse wave information, and determines whether the specified pulse rate is below a 1st threshold value (40 bpm) (S602).

  When the event determination unit 120 determines that the pulse rate is equal to or less than the first threshold (40 bpm), the event determination unit 120 determines that the subject is in a bradycardia state (S603), and ends the event detection process. For example, this corresponds to the case of FIG.

  On the other hand, when the event determination unit 120 determines that the pulse rate is greater than the first threshold (40 bpm), it determines that the subject is not in the bradycardia state. And it is determined whether a pulse rate is more than a 2nd threshold value (200 bpm) (S604).

  If the event determination unit 120 determines that the pulse rate is greater than or equal to the second threshold (200 bpm), it further determines whether or not the pulse wave amplitude is gradually decreasing (S605).

  If the event determination unit 120 determines that the pulse wave amplitude is gradually decreasing, it determines that the subject is in a tachycardia state (S603), and ends the event detection process. For example, this corresponds to the case of FIG.

  On the other hand, when the event determination unit 120 determines that the pulse rate is smaller than the second threshold, or when the pulse rate is equal to or greater than the second threshold but the pulse wave amplitude has not decreased. It is determined that there is no tachycardia condition. In this case, the event determination unit 120 determines whether there is a pulse missing for 2 seconds or more (S606).

  If the event determination unit 120 determines that there is a pulse missing for 2 seconds or more, it is determined that the pulse is missing (S603), and the event detection process is terminated. For example, this corresponds to the case of FIG.

  On the other hand, when the event determination unit 120 determines that there is no pulse missing for 2 seconds or more, it is not a pulse missing state, so it is determined that no fainting event has occurred, and the event detection process is terminated.

  Next, the detailed flow of the notification process in S507 of FIG. 5 will be described using the flowchart of FIG. The series of processing shown in FIG. 7 is performed, for example, when the analysis button of the biological information detection apparatus 100 is pressed by the user.

  First, the control unit 130 calculates the pulse rate at a location where the pulse wave amplitude of the event pulse is low (S901). Next, the control unit 130 calculates HF (High Frequency) and LF (Low Frequency) / HF by frequency analysis as an index representing the vagus nerve activity of the subject (S902). And the control part 130 calculates a normal pulse rate from normal pulse wave data (S903), displays these data on a display part (notification part 300), and complete | finishes a process. Note that these processes may be performed by the biological information detection apparatus 100 or an external information processing apparatus.

  Moreover, the flow of the process at the time of calculating fainting index information is shown to the flowchart of FIGS.

  In this case, it is necessary to make initial settings first. In the initial setting, as shown in the flowchart of FIG. 8, first, the pulse wave information measurement unit 110 measures biological information (pulse wave information) (S1001), and stores the measured biological information in an internal memory (not shown). (S1002). Next, the control unit 130 determines whether or not an event button provided in the biological information detection apparatus 100 has been pressed (S1003).

  In this example, for example, the subject presses the event button when he / she feels a low blood pressure state (cerebral ischemic symptom) such as dizziness, shortness of breath or fatigue (due to reduced cardiac output) during exertion. When it is determined that the event button provided in the biological information detection apparatus 100 is pressed, the control unit 130 uses the time of the timing when the event button is pressed and the pulse waves for several times before and after as the first event pulse. Recording is performed (S1004), and the initial setting is completed.

  On the other hand, when it determines with the event button provided in the biometric information detection apparatus 100 not being pressed, it returns to step S1001 and repeats a process until the 1st event pulse is recorded.

  Next, the flow of faint detection processing will be described using the flowchart of FIG. First, similarly to step S1001 and step S1002, the pulse wave information measurement unit 110 measures biological information (pulse wave information) (S1101), and stores the measured biological information in an internal memory (not shown) (S1102).

  Then, the event determination unit 120 performs a comparison process with the first event pulse (S1103). The detailed flow of this process will be described later.

  Next, the event determination unit 120 determines whether or not a fainting event has occurred based on the comparison result of step S1103 (S1104). If it is determined that a fainting event has occurred, the (n + 1) th event As the pulse wave information of the pulse, the pulse wave information of the currently measured pulse is stored in the internal memory (S1105). n is an integer of 1 or more. For example, the pulse waveform of the (n + 1) th event pulse is the pulse waveform shown in any of FIGS. 3B to 3E described above.

  And the control part 130 performs at least one of the alerting | reporting process of the fainting event by the alerting | reporting part 300, or the transmission process of the pulse wave information of the fainting event to an external device (S1106). Thereafter, if there is an end instruction, the process ends. If there is no end instruction, the process returns to step S1101. A specific flow of the notification process will be described in detail later.

  If it is determined in step S1104 that no fainting event has occurred, the process returns to step S1101 and the process is repeated.

  Next, the flow of comparison processing with the first event pulse will be described using the flowchart of FIG. Processes other than step S1205 are the same as steps S601 to S604 and S606 in FIG.

  In step S605 in FIG. 6, the control unit 130 determines whether or not the pulse wave amplitude is gradually decreasing. In step S1205 in FIG. 10, the pulse wave amplitude currently measured by the control unit 130 is It is determined whether or not the amplitude is equal to or less than one event pulse.

  If it is determined that the currently measured pulse wave amplitude is less than or equal to the amplitude of the first event pulse, it is determined that a fainting event has occurred (S1203), and the process ends. That is, in this embodiment, when it is determined that the current pulse wave information is a sign of fainting or fainting is worse than the pulse wave information of the first event pulse, the current pulse wave information is changed to the (n + 1) th event. This is stored as a pulse (S1105).

  On the other hand, if it is determined that the currently measured pulse wave amplitude is greater than the amplitude of the first event pulse, a pulse missing determination process in step S1206 is performed.

  Next, a detailed flow of the notification process in step S1106 in FIG. 9 will be described with reference to FIG.

  First, the control unit 130 reads the pulse wave information of the first event pulse and the pulse wave information of the (n + 1) th event pulse (S1301). Then, the process for identifying the fainting index information is performed (S1302). A detailed flow of the fainting index information specifying process will be described later. Further, the flow of processing after step S1303 in FIG. 11 is the same as the flow of processing after step S901 in FIG.

  Next, the detailed flow of the fainting index information specifying process in step S1302 of FIG. 11 will be described with reference to FIG.

  First, the controller 130 sets the pulse amplitude of the first event pulse to 100 with respect to the pulse wave information of the first event pulse and the pulse wave information of the (n + 1) th event pulse acquired in step S1301 of FIG. The relative value conversion processing is performed (S1401). Then, the control unit 130 reads out a pulse wave during a period in which the pulse wave amplitude of the event pulse wave is lower than a given threshold for a given set time (S1402).

  Further, the control unit 130 performs a relative value summation process of pulse amplitudes for a set time (S1403).

  Finally, the control unit 130 performs a pulse wave coefficient multiplication process (S1404) and ends the process. That is, in step S1403 and step S1404, the above-described processing of equation (1) is performed.

  In step S1306 in FIG. 11 described above, display images such as those shown in FIGS. 16A and 16B are displayed on the display unit based on the pulse wave information, fainting index information, and the like thus obtained. (Notification unit 300). FIG. 16A shows an example of a display image when a fainting event due to tachycardia occurs, and FIG. 16B shows an example of a display image when a fainting event due to bradycardia occurs. In this embodiment, a doctor or the like browses these display images and analyzes the cause of fainting of the subject.

For example, the display image of FIG. 16A will be described in detail. In the display image of this example, the horizontal axis is the common time axis, and the syncope index information, the pulse rate (bpm), and the triaxial acceleration sensor The sensor signal, HF (ms ² ) representing vagus nerve activity, and LF / HF representing sympathetic nerve activity are displayed.

  In the example of FIG. 16 (A), the fainting index information that was stable in the vicinity of 330 to 360 between times 15:00 and 15:15 fluctuated greatly to 217, and something abnormal occurred. I understand that. Therefore, when other information is examined in detail, it can be seen that the pulse rate is rapidly increased at the timing of T1. It can also be seen that there is no significant change in the sensor signal of the acceleration sensor or HF, but LF / HF also varies greatly. If the pulse rate at this time is analyzed in more detail, it can be seen that the pulse rate is increasing while the pulse amplitude is decreasing, as shown in the lower diagram of FIG. Therefore, it can be determined that the subject is in a tachycardia state. In this way, the doctor or the like can determine that the subject may fall into a tachycardia state, which can be a sign of fainting. Note that a detailed image of the pulse rate shown in the lower diagram of FIG. 16A may be appropriately displayed on the display unit based on an instruction to the user.

  Similarly, in the example of FIG. 16B, the fainting index information greatly fluctuates between the times 15:00:00 and 15:15. If the information during this period is examined in detail, the pulse rate has decreased and HF and LF / HF have fluctuated greatly, so that it can be determined that the subject is in bradycardia. In this way, the doctor or the like can determine that the subject may fall into a bradycardia state, which can be a sign of fainting.

5. Configuration Example of Biological Information Detection Device FIGS. 13A, 13B, and 14 are external views of the biological information detection device of this embodiment. FIG. 13A is a view of the biological information detection apparatus viewed from the front direction side, FIG. 13B is a view viewed from the upper direction side, and FIG. 14 is a view viewed from the side direction side.

  As shown in FIGS. 13A to 14, the biological information detection apparatus of the present embodiment includes a band unit 510, a case unit 530, and a sensor unit (pulse wave information measurement unit) 110. Case portion 530 is attached to band portion 510. The sensor unit 110 is provided in the case unit 530. The biological information detection apparatus includes an event determination unit 120 and a control unit 130 as shown in FIG. 1 described above, and these are provided in the case unit 530. Note that the biological information detection apparatus according to the present embodiment is not limited to the configuration shown in FIGS. 13A to 14 and the like, and some of the components may be omitted or replaced with other components. Various modifications, such as adding, are possible.

  The band unit 510 is wound around a user's wrist to wear the biological information detection device. The band part 510 has a hole part 512 and a buckle part 514. The buckle part 514 includes a band insertion part 515 and a protrusion part 516. The user inserts one end side of the band part 510 into the band insertion part 515 of the buckle part 514 and inserts the projection part 516 of the buckle part 514 into the hole part 512 of the band part 510, whereby the biological information detection device is attached to the wrist. Can be attached to. In this case, the magnitude of the pressure on the sensor unit 110 (the pressure on the wrist surface) is adjusted according to which hole portion 512 the projection 516 is inserted into.

  The case part 530 corresponds to the main body part of the biological information detection device. Various components of the biological information detection device such as the sensor unit 110, the event determination unit 120, and the control unit 130 are provided inside the case unit 530. That is, the case portion 530 is a housing that houses these components.

  The case portion 530 is provided with a light emission window portion 532. The light emission window part 532 is formed of a translucent member. The case portion 530 is provided with a light emitting portion (LED) mounted on a flexible substrate, and light from the light emitting portion is irradiated to the outside of the case portion 530 through the light emitting window portion 532.

  As shown in FIG. 14, the case portion 530 is provided with a terminal portion 531. When the biological information detection device is attached to a cradle (not shown), the terminal portion of the cradle and the terminal portion 531 of the case portion 530 are electrically connected. Thereby, the secondary battery (battery) provided in the case part 530 can be charged.

  The sensor unit (pulse wave information measurement unit) 110 detects biological information such as a pulse wave of the subject. For example, the sensor unit 110 includes a light receiving unit and a light emitting unit. The sensor unit 110 includes a convex portion 552 that is formed of a translucent member and that makes contact with the skin surface of the subject to apply pressure. In this state where the convex portion 552 presses the skin surface, the light emitting portion emits light, and the light receiving portion receives the light reflected by the subject (blood vessel), and the light reception result is detected. The signal is output to the control unit 130 as a signal. The control unit 130 detects biological information such as a pulse wave based on the detection signal from the sensor unit 110. Note that the biological information to be detected by the biological information detection device of this embodiment is not limited to the pulse wave (pulse rate), and the biological information detection device can detect biological information other than the pulse wave (for example, oxygen saturation in blood). Device for detecting temperature, body temperature, heart rate, etc.).

  FIG. 15 is an explanatory diagram regarding the wearing of the biological information detection device 100 and the communication with the portable communication terminal 200.

  As shown in FIG. 15, the user who is the subject wears the biological information detecting device 100 on the wrist 410 like a watch. As shown in FIG. 14, the sensor unit 110 is provided on the subject-side surface of the case unit 530. Accordingly, when the biological information detection device 100 is attached, the convex portion 552 of the sensor unit 110 contacts and presses the skin surface of the wrist 410, and in this state, the light emitting unit of the sensor unit 110 emits light and receives light. When the unit receives the reflected light, biological information such as a pulse wave is detected.

  The biological information detection apparatus 100 and the information processing apparatus 200 are connected for communication so that data can be exchanged. The information processing apparatus 200 is a portable communication terminal such as a smartphone, a mobile phone, or a future phone, for example. Alternatively, the information processing apparatus 200 may be an information processing terminal such as a tablet computer. As a communication connection between the biological information detection apparatus 100 and the information processing apparatus 200, for example, proximity wireless communication such as Bluetooth can be employed. In this way, the biological information detecting apparatus 100 and the portable communication terminal 200 are communicatively connected to the display unit 430 (LCD or the like) of the portable communication terminal 200, so that various biological information such as the pulse rate and calorie consumption (the first number) 1 biological information, second biological information) can be displayed. That is, various information obtained based on the detection signal of the sensor unit 110 can be displayed. The display unit 430 is an example of the notification unit 300 described above. Note that arithmetic processing such as fainting index information may be executed in the biological information detecting apparatus 100, or at least a part thereof may be executed in the portable communication terminal 200.

  In addition, the biological information detection apparatus 100 or the like of the present embodiment may realize part or most of the processing by a program. In this case, the biological information detection apparatus 100 according to the present embodiment is realized by a processor such as a CPU executing a program. Specifically, a program stored in a non-temporary information storage device is read, and a processor such as a CPU executes the read program. Here, an information storage device (device readable by a computer) stores programs, data, and the like, and functions as an optical disk (DVD, CD, etc.), HDD (hard disk drive), or memory (card type). It can be realized by memory, ROM, etc. A processor such as a CPU performs various processes according to the present embodiment based on a program (data) stored in the information storage device. That is, in the information storage device, a program for causing a computer (an apparatus including an operation unit, a processing unit, a storage unit, and an output unit) to function as each unit of the present embodiment (a program for causing a computer to execute the processing of each unit). Is memorized.

  As a result, the processing of this embodiment can be realized by a program. The program may be a program that is read and executed by a processing unit (for example, a DSP) of a device such as a smartphone.

  In addition, the biological information detection apparatus 100 according to the present embodiment may include a processor and a memory. The processor here may be, for example, a CPU (Central Processing Unit). However, the processor is not limited to the CPU, and various processors such as a GPU (Graphics Processing Unit) or a DSP (Digital Signal Processor) can be used. The processor may be a hardware circuit based on ASIC (Application Specific Integrated Circuit). Further, the memory stores instructions that can be read by a computer. When the instructions are executed by the processor, each unit of the biological information detecting apparatus 100 according to the present embodiment is realized. The memory here may be a semiconductor memory such as an SRAM (Static Random Access Memory) or a DRAM (Dynamic Random Access Memory), or may be a register or a hard disk. In addition, the instruction here may be an instruction of an instruction set constituting the program, or an instruction for instructing an operation to the hardware circuit of the processor.

  Further, the pulse wave detection device worn by the user may include a pulse wave sensor 11 and a communication unit that communicates a pulse wave sensor signal from the pulse wave sensor 11 wirelessly or by wire. In that case, the program according to the present embodiment is provided separately from the pulse wave detection device, and is read out by a processing unit (for example, a CPU) of an information processing system that receives a pulse wave sensor signal from the communication unit described above. Executed. This information processing system may not be assumed to be worn by a user such as a PC, or may be assumed to be worn (mobile) by a user such as a smartphone. Further, a server system or the like connected via a network such as the Internet may be used as the information processing system.

  When the pulse wave detection device and the information processing system on which the program is executed are separate, a display unit used for presenting pulsation information to the user is provided at an arbitrary location. For example, the information may be displayed on a display unit of the information processing system, or a pulse wave detection device may be provided with a display unit to display pulsation information output from the information processing system. Moreover, you may display on the display part of different apparatuses (for example, arbitrary client apparatuses, etc. when a server system is used as an information processing system).

  Although the present embodiment has been described in detail as described above, it will be easily understood by those skilled in the art that many modifications can be made without departing from the novel matters and effects of the present invention. Accordingly, all such modifications are intended to be included in the scope of the present invention. For example, a term described at least once together with a different term having a broader meaning or the same meaning in the specification or the drawings can be replaced with the different term in any part of the specification or the drawings. In addition, the configuration and operation of the biological information detection apparatus are not limited to those described in the present embodiment, and various modifications can be made.

100 biological information detection device, 110 pulse wave information measurement unit (sensor unit),
120 event determination unit, 130 control unit, 200 portable communication terminal (information processing device),
300 notification section, 410 wrist, 430 display section, 510 band section, 512 hole section,
514 Buckle part, 515 Band insertion part, 516 Projection part, 530 Case part,
531 Terminal part, 532 Light emitting window part, 552 Convex part

Claims (16)

A pulse wave information measurement unit for measuring the pulse wave information of the subject;
Based on the measured pulse wave information, an event determination unit that determines whether a fainting syncope or fainting fainting event has occurred in the subject;
When it is determined that the fainting event has occurred, a control unit that performs at least one of storage processing of the pulse wave information at the time of occurrence of the fainting event and notification processing of the fainting event;
A biological information detection device comprising: In claim 1,
The event determination unit
A biological information detection apparatus, wherein when it is determined that the subject is in a bradycardia state based on the pulse wave information, it is determined that the fainting event has occurred in the subject. In claim 2,
The event determination unit
A biological information detection apparatus, wherein when the pulse rate specified based on the pulse wave information is less than a first threshold, the subject is determined to be in the bradycardia state. In any one of Claims 1 thru | or 3,
The event determination unit
A biological information detection apparatus that determines that the fainting event has occurred in the subject when it is determined that the subject is in a tachycardia state based on the pulse wave information. In claim 4,
The event determination unit
The pulse rate specified based on the pulse wave information is greater than or equal to a second threshold, and the pulse wave amplitude at the first timing specified based on the pulse wave information is more than the first timing. A biological information detection apparatus, wherein when the pulse wave amplitude at a later second timing is smaller, the subject is determined to be in the tachycardia state. In any one of Claims 1 thru | or 5,
The event determination unit
A biological information detection apparatus that determines that the fainting event has occurred in the subject when it is determined that the subject is in a pulse missing state based on the pulse wave information. In claim 6,
The event determination unit
When a pulse rate specified based on the pulse wave information is greater than or equal to a third threshold value and less than a fourth threshold value, in the pulse wave waveform specified based on the pulse wave information, a given period When the pulse is not detected over a period of time, it is determined that the subject is in the pulse missing state. In any one of Claims 1 thru | or 7,
The event determination unit
A biological information detection apparatus that determines that the fainting event has occurred in the subject when it is determined that the subject is in an atrial fibrillation state based on the pulse wave information. In any one of Claims 1 thru | or 8.
The event determination unit
A biological information detecting apparatus, wherein when the blood oxygen saturation level of the subject is determined to be equal to or less than a predetermined set value, it is determined that the fainting event has occurred in the subject. In any one of Claims 1 thru | or 9,
The event determination unit
Biological information characterized by determining that the fainting event has occurred in the subject when it is determined that the subject has fallen due to fainting based on body motion sensor information obtained from a body motion sensor Detection device. In any one of Claims 1 thru | or 10.
The pulse wave information at the occurrence of the fainting event is
A biological information detection apparatus comprising at least one information of a pulse rate at the time of occurrence of the fainting event and a pulse wave waveform at the time of occurrence of the fainting event. In any one of Claims 1 thru | or 11,
The controller is
The biometric information detection apparatus, wherein the stored pulse wave information at the time of occurrence of the fainting event is output as notification information notified by a notification unit. In any one of Claims 1 to 12,
The controller is
Based on the pulse wave information, the autonomic nerve activity information of the subject is obtained, the autonomic nerve activity information is associated with the pulse wave information at the time of occurrence of the fainting event, and the notification information notified by the notification unit A biological information detection apparatus that outputs the autonomic nerve activity information. In any one of Claims 1 thru | or 13.
The event determination unit
A biological information detection apparatus that determines whether or not the fainting event has occurred based on reference pulse wave information for determination. In claim 14,
The reference pulse wave information is
The biological information detection apparatus, wherein the information is the pulse wave information corresponding to a timing when an operation by a user is received. In claim 14 or 15,
The event determination unit
A biological information detection apparatus that determines whether or not the fainting event has occurred by comparing the reference pulse wave information with the pulse wave information measured by the pulse wave information measurement unit.

Images