Wearable type vital sign measurement device and medical vital sign measurement system

Abstract

To provide a wearable type vital sign measurement device and a medical vital sign measurement system that can accurately and precisely predict and determine symptoms of respiratory diseases, accurately and precisely predict and determine symptoms of sleep apnea syndrome, and furthermore perform health examinations of both the respiratory system and the circulatory system simultaneously.SOLUTION: In this invention, a digital stethoscope device 21, a saturated oxygen concentration sensor 22, and an electrocardiographic sensor 23 are provided in an opposing portion 20A of a case 20, and a synchronization portion 245 is provided in the case 20. As a result, the invention enables accurate and precise prediction and determination of symptoms of respiratory diseases, accurate and precise prediction and determination of symptoms of sleep apnea syndrome, and furthermore simultaneous health examinations of both the respiratory system and the circulatory system.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a wearable vital sign measuring device and a medical vital sign measuring system.

Background Art

[0002] As a device for measuring a subject's vital signs (signs of life), for example, there is one shown in Patent Document 1. Hereinafter, Patent Document 1 will be described.

[0003] The medical system and medical information processing device of Patent Document 1 include a data acquisition unit and a data processing unit. The data acquisition unit acquires at least two types of data among blood oxygen data, auscultation sound data, eye image data, and eye blood flow data from a patient. The data processing processes a plurality of data acquired by the data acquisition unit. Note that the vital signs of the subject in the medical system and medical information processing device of Patent Document 1 are blood oxygen, auscultation sound, eye image, and eye blood flow.

[0004] Here, blood oxygen (saturation oxygen concentration) and auscultation sound (lung sound) are important information when predicting and judging symptoms of respiratory diseases. Therefore, by simultaneously acquiring and processing blood oxygen (saturation oxygen concentration) and auscultation sound (lung sound) and synchronizing them in time, the symptoms of respiratory diseases can be predicted and judged accurately and precisely.

[0005] In addition, electrocardiogram is important information when predicting and judging symptoms of cardiovascular diseases. Therefore, by simultaneously measuring this electrocardiogram and the above-mentioned blood oxygen (saturation oxygen concentration) and auscultation sound (lung sound), the symptoms of sleep apnea syndrome can be predicted and judged accurately and precisely. Moreover, health diagnosis of the respiratory system and health diagnosis of the cardiovascular system can be performed simultaneously.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, the medical system and medical information processing apparatus of Patent Document 1 acquire and process blood oxygen data (saturated oxygen concentration data) from a patient using a blood oxygen measuring device such as a pulse oximeter, and also acquire and process auscultation sound data (lung sound data) from a patient using an auscultation sound measuring device such as an electronic stethoscope. Thus, the medical system and medical information processing apparatus of Patent Document 1 acquire and process blood oxygen data (saturated oxygen concentration data) and auscultation sound data (lung sound data) using devices such as separate sensors, and moreover, do not synchronize the blood oxygen data (saturated oxygen concentration data) and the auscultation sound data (lung sound data) temporally. As a result, it is difficult for the medical system and medical information processing apparatus of Patent Document 1 to accurately and precisely predict and judge the symptoms of respiratory diseases.

[0008] Further, the medical system and medical information processing apparatus of Patent Document 1 detect changes in the state of the circulatory system accompanying infectious diseases from at least two of blood oxygen data, auscultation sound data, eye image data, and eye blood flow data. As a result, the medical system and medical information processing apparatus of Patent Document 1 cannot accurately and precisely predict and judge the symptoms of sleep apnea syndrome, and moreover, cannot simultaneously perform a health diagnosis of the respiratory system and a health diagnosis of the circulatory system.

[0009] The problem to be solved by this invention is to provide a wearable vital sign measuring device and a medical vital sign measuring system that can accurately and precisely predict and judge the symptoms of respiratory diseases, can accurately and precisely predict and judge the symptoms of sleep apnea syndrome, and moreover, can simultaneously perform a health diagnosis of the respiratory system and a health diagnosis of the circulatory system.

Means for Solving the Problems

[0010] The wearable vital sign measuring device according to the first aspect of the present invention is a wearable vital sign measuring device that can be worn on the chest or back of a subject. When the wearable vital sign measuring device is worn on the chest or back of the subject, it includes an opposing portion that faces the chest or back of the subject, and a vital sign detection unit provided on the opposing portion that collects the vital signs of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals. The vital sign detection unit includes at least two of: a digital stethoscope device provided on the opposing portion that collects the lung sounds of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals; a saturation oxygen concentration sensor provided on the opposing portion that collects the saturation oxygen concentration of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals; and an electrocardiogram sensor provided on the opposing portion that collects the cardiac activity of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals.

[0011] In the wearable vital sign measuring device of the present invention, it is preferable to include a synchronization unit that synchronizes and outputs at least two of the electrical signals from the digital stethoscope device, the electrical signals from the saturation oxygen concentration sensor, and the electrical signals from the electrocardiogram sensor in time.

[0012] In the wearable vital sign measuring device of the present invention, it is preferable that the vital signs collected by the digital stethoscope device and output as the electrical signals are heart sounds in addition to the lung sounds.

[0013] In the wearable vital sign measuring device of the present invention, the digital stethoscope device includes at least a microphone for collecting lung sounds and external environmental sounds, a microphone for collecting only external environmental sounds, and a signal processing unit. The signal processing unit performs signal processing to adjust the level of the external environmental sound collected by the external environmental sound collecting microphone to the level of at least the lung sound and the external environmental sound collected by the lung sound collecting microphone, signal processing to subtract the external environmental sound collected by the external environmental sound collecting microphone from at least the lung sound and the external environmental sound collected by the lung sound collecting microphone to obtain at least only the lung sound, and signal processing to convert at least only the lung sound into an electrical signal and output it. This is preferable.

[0014] In the wearable vital sign measuring device of the present invention, the saturation oxygen concentration sensor includes an attachment portion, a light emitting portion and a light receiving portion attached to the attachment portion. The light emitting portion emits red light and infrared light toward the subject, and the light receiving portion receives the red light and the infrared light emitted from the light emitting portion and reflected from the subject, and outputs the saturation oxygen concentration in the arterial blood as the electrical signal based on the red light and the infrared light. This is preferable.

[0015] In the wearable vital sign measuring device of the present invention, the attachment portion has a concave shape recessed with respect to the subject, and the light emitting portion and the light receiving portion are attached to a portion of the attachment portion facing the subject. This is preferable.

[0016] In the wearable vital sign measuring device of the present invention, the vital sign collected by the saturation oxygen concentration sensor and output as the electrical signal is preferably the heart rate in addition to the saturation oxygen concentration.

[0017] In the wearable vital sign measuring device of the present invention, the electrocardiogram sensor is a multifunctional sensor, and the vital signs collected by the electrocardiogram sensor of the multifunctional sensor and output as the electrical signals are preferably the contraction activities of the muscle cells of the subject in addition to the activities of the heart of the subject.

[0018] In the wearable vital sign measuring device of the present invention, it is preferable that the facing portion has a mounting portion for mounting the facing portion near the lungs of the subject or near the lungs and heart, on the chest or back of the subject.

[0019] In the wearable vital sign measuring device of the present invention, the mounting portion is at least one of an adhesive for adhering the facing portion to the skin of the subject, a fixing tape for fixing the facing portion to the subject by adhering to both the facing portion and the skin of the subject with the facing portion applied to the skin of the subject, or a fixing belt that is attached to the facing portion and tightens the subject with the facing portion applied to the skin of the subject to fix the facing portion to the subject.

[0020] The medical vital sign measurement system according to the first aspect of the present invention includes a wearable vital sign measurement device and a data processing and storage device of the present invention to solve the above problems. The wearable vital sign measurement device has a communication unit that transmits at least two of the electrical signals from the digital stethoscope device, the electrical signal from the saturation oxygen concentration sensor, and the electrical signal from the electrocardiogram sensor as synchronous digital data. The data processing and storage device constitutes a communication line together with the communication unit of the wearable vital sign measurement device, and has a communication unit that receives and outputs the synchronous digital data transmitted from the communication unit of the wearable vital sign measurement device, a processing unit that processes and outputs the sound digital data among the synchronous digital data output from the communication unit, a storage unit that stores the synchronous digital data output from the processing unit, and an output unit that outputs the synchronous digital data output from the processing unit and the synchronous digital data stored in the storage unit. This is the gist of the present invention.

Advantages of the Invention

[0021] The wearable vital sign measurement device and the medical vital sign measurement system of the present invention can accurately predict and judge the symptoms of respiratory diseases, and can also accurately predict and judge the symptoms of sleep apnea syndrome. Moreover, it is possible to simultaneously perform a health diagnosis of the respiratory system and a health diagnosis of the cardiovascular system.

Brief Description of the Drawings

[0022]

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Mode for Carrying Out the Invention

[0023] (Explanation of the Configuration of the Embodiment) Hereinafter, a medical vital sign measurement system 1 according to an embodiment of the present invention will be described. FIG. 1 is a diagram showing a configuration example of the medical vital sign measurement system 1. Note that all of the embodiments described below show preferred specific examples of the present invention. The numerical values, components, arrangement positions and connection forms of the components, the order of processes in the flowchart, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. Also, each figure is not necessarily drawn precisely.

[0024] The medical vital sign measurement system 1 includes a wearable vital sign measurement device 2 and a data processing and storage device 3.

[0025] The wearable vital sign measurement device 2 (hereinafter, appropriately referred to as the measurement device 2) is attached to the chest of the subject P, and as vital signs, at least lung sounds (in the case of the example in FIG. 1, heart sounds together with lung sounds) are picked up, and at the same time, at least the saturation oxygen concentration (in the case of the example in FIG. 1, the heart rate together with the saturation oxygen concentration), and at least the electrocardiogram (in the case of the example in FIG. 1, the electromyogram together with the electrocardiogram) are measured, and they are synchronized at the timing of sound collection and measurement and transmitted to the data processing and storage device 3. The data processing and storage device 3 stores the data transmitted from the measurement device 2. The data indicating the lung sounds and heart sounds, and the saturation oxygen concentration and heart rate, electrocardiogram and electromyogram stored in the data processing and storage device 3 are synchronized at the timing of their sound collection and measurement, and thus represent the state of the subject P at the same timing. Although details will be described later, by observing the lung sounds and heart sounds, and the saturation oxygen concentration and heart rate, electrocardiogram and electromyogram indicating the state of the subject P at the same timing, the subject P can be diagnosed more accurately.

[0026] In the case of the example of FIG. 1, the measuring device 2 is attached to the chest of the subject P, but it is not limited thereto. As long as it is a place where the auscultation of lung sounds, the measurement of the saturation oxygen concentration, and the measurement of light shielding can be performed simultaneously, it may be, for example, the back or the like.

[0027] (Measurement of saturation oxygen concentration at locations other than the fingertips) Generally, it is said that the fingertips are suitable as the measurement location for measuring the saturation oxygen concentration. However, it has been clarified that similar results of the saturation oxygen concentration can be obtained whether measured at the chest or at the fingertips. When the saturation oxygen concentration at the tip of the index finger and the chest of the same subject P was measured almost simultaneously, the same value of the saturation oxygen concentration was obtained. FIG. 2(A) is a graph showing the saturation oxygen concentration measured at the tip of the index finger of the left hand of the subject P. FIG. 2(B) is a graph showing the value of the saturation oxygen concentration measured by the measuring device 2 against the chest near the lungs of the subject P. The vertical axis of FIG. 2 indicates the saturation oxygen concentration (unit: %), and the horizontal axis indicates the time (unit: seconds).

[0028] Thus, in this case, as shown in FIGS. 2(A) and 2(B), it can be seen that the saturation oxygen concentration is about 98% in both cases. Note that the time A from the fall at about 2.30 seconds to the rise at about 3.40 seconds in the graph of FIG. 2(B) is the time when the measuring device 2 is temporarily removed from the chest or back of the subject P, and the saturation oxygen concentration is 0%.

[0029] Thus, since the saturation oxygen concentration can also be measured at the chest, the lung sounds can also be measured, and the lung sounds, the saturation oxygen concentration, and the electrocardiogram can be measured synchronously.

[0030] (Significance of synchronously measuring lung sounds, saturation oxygen concentration, and electrocardiogram) It takes about 2 to 3 seconds for red blood cells to reach the left atrium after being oxygenated through alveoli in the pulmonary circulation, and it takes more than 10 seconds depending on the site until it reaches the peripheral circulation from the left ventricle. Furthermore, in addition to this, in the measurement of saturated oxygen concentration, by moving-averaging the data obtained over a certain period of time, it takes even more time for the moving average, and the measurement is delayed by that amount. That is, when measuring the saturated oxygen concentration at the tip of the finger of the subject P or at the earlobe of the subject P, there is a certain time lag between the lung sound picked up from the chest and the saturated oxygen concentration measured at the fingertip or the like.

[0031] However, if the saturated oxygen concentration can also be measured at the same location as the lung sound, the time lag between the data of the two can be reduced.

[0032] The significance of measuring lung sound and saturated oxygen concentration with less time lag, that is, synchronous lung sound and saturated oxygen concentration, will be explained. The following diagnoses can be made based on the synchronous lung sound and saturated oxygen concentration.

[0033] When the lung sound seems abnormal but the saturated oxygen concentration does not decrease, it is considered that there may be a bronchial asthma attack. The airway passes through more than 20 branches from the trachea and reaches the alveolar region where gas exchange occurs. The parts other than the sites where gas exchange can occur are called ducts. The abnormal lung sound caused by bronchial asthma can also be caused by duct disorders. However, even if there is a disorder in the duct, if the gas exchange in the alveolar region can maintain the value of the saturated oxygen concentration at a level that can keep it within the normal range and the circulatory dynamics are also stable, the value of the saturated oxygen concentration can be maintained at a level that can keep it within the normal range. Thus, even when the saturated oxygen concentration does not decrease, if there is an abnormality in the lung sound, it can be considered that there is a disorder in the duct and there may be a bronchial asthma attack.

[0034] Conversely, in cases where the lung sounds seem normal but the saturated oxygen concentration is decreasing, for example, there may be a possibility of pulmonary hypertension. In the pathological condition of pulmonary hypertension, remodeling occurs, which is a structural modification of the pulmonary artery where the microvascular bed in the lungs is damaged (for example, the lumen of the blood vessel becomes narrower). In gas exchange in the lungs, it is necessary for all the units of alveoli, pulmonary interstitium, and pulmonary microvessels to function normally. Therefore, if there is a disorder in this part of the blood vessels, gas exchange will be impaired. Pulmonary hypertension includes pulmonary thromboembolism. These vascular diseases do not show abnormalities in lung sounds but the saturated oxygen concentration decreases. Thus, even in cases where the lung sounds seem normal, if the saturated oxygen concentration is decreasing, for example, it can be predicted and judged as pulmonary hypertension. Also, similar to pulmonary hypertension, in cases of heart failure where there is congestion in the alveoli, if it is mild, the lung sounds will be at a normal level but the saturated oxygen concentration will decrease. Furthermore, in cases of renal failure as well, the lung sounds will be at a normal level but the saturated oxygen concentration will decrease.

[0035] Here, if both the lung sounds and the saturated oxygen concentration are normal, it can be predicted and judged that the respiratory system of the subject P is normal. Also, if there are abnormalities in both the lung sounds and the saturated oxygen concentration, it can be predicted and judged that there is an abnormality in the respiratory system of the subject P. For example, in cases of severe asthma attacks, in addition to abnormal lung sounds, an abnormality in the saturated oxygen concentration, that is, a decrease in the saturated oxygen concentration, can be seen.

[0036] By synchronizing the lung sounds and the saturated oxygen concentration, the possibility of the subject's condition can be diagnosed more comprehensively. Also, by synchronizing the lung sounds and the saturated oxygen concentration, the above-mentioned symptoms can be accurately grasped.

[0037] Also, by synchronously measuring the lung sounds, the saturated oxygen concentration, and the electrocardiogram (hereinafter sometimes referred to as "various"), it becomes possible to accurately predict and judge the symptoms of sleep apnea syndrome. Moreover, it is also possible to simultaneously conduct a health diagnosis of the respiratory system and a health diagnosis of the circulatory system. Furthermore, since this measuring device 2 is to be worn on the chest or back of the subject P, it can perform continuous measurement of various data from the start of exercise to immediately after exercise. Compared with conventional stationary measuring instruments, it can comprehensively grasp signs of electrocardiogram changes including breath sounds, saturation oxygen concentration, and heartbeats. That is, conventional stationary measuring instruments perform comprehensive diagnostic judgments based on various measurement data obtained in a resting state with a time lag in measurement. Therefore, even a person suffering from a respiratory or heart disease may be regarded as a healthy person. On the other hand, since this measuring device 2 can perform continuous measurement of various data from the start of exercise to immediately after exercise, signs of respiratory and heart diseases that are not detected in the measurement of resting data using a conventional stationary measuring instrument with a time lag, even in a healthy person, can be accurately grasped. Among those regarded as healthy by conventional stationary measuring instruments, people suffering from respiratory and heart diseases, so-called hidden patients, can be discovered and diagnosed at an early stage. Thus, this measuring device 2 can contribute not only to the early detection and diagnosis of diseases but also to the early detection and diagnosis of potential patients. Here, the mechanism by which the signs of respiratory system diseases can be accurately grasped by wearing this measuring device 2 on the chest or back of the subject P and performing continuous measurement of various data from the start of exercise to immediately after exercise will be explained. In respiratory disease patients, even with the same saturation (SpO2) value, there is a biological regulation that increases the pulse rate to maintain a high value state. Therefore, by comparing the value of saturation (SpO2) during exercise and the way the value of saturation (SpO2) returns after exercise, it is possible to distinguish between the group without respiratory disease and the group with respiratory disease, and early detection of respiratory disease or discovery of potential patients can be achieved.

[0038] (Description of Measuring Device 2) The measuring device 2 that constitutes the medical vital sign measurement system 1 will be described. As shown in FIG. 1, the measuring device 2 has a case 20. As shown in FIG. 3, the case 20 has an opposing portion (opposing surface) 20A that faces the chest or back of the subject P when the measuring device 2 is attached to the chest or back of the subject P. In the case of this example, the opposing portion 20A of the case 20 is attached to the chest or back near the lungs and heart of the subject P via the attachment portion 200. In this example, the attachment portion 200 is an adhesive that directly attaches and detaches the opposing portion 20A of the case 20 to the skin of the chest of the subject P (hereinafter also referred to as the adhesive 200). The adhesive 200 is a gel-like adhesive material, which is applied to the necessary portions (portions near the lungs and heart) of the chest and back of the subject P to attach the opposing portion 20A of the case 20 to the skin of the subject P.

[0039] In this example, the case 20 is made of an arbitrary material, for example, a synthetic resin. When attached to the subject P, the case 20 can be configured to be lightweight, thin, and small so as not to impose a load on the subject P.

[0040] FIG. 4 is a block diagram showing the internal configuration of the measuring device 2. Inside the case 20 of the measuring device 2, a digital stethoscope device 21 as a first collection unit, a saturation oxygen concentration sensor 22 as a second collection unit, an electrocardiogram sensor 23 as a third collection unit, a control unit 24, and a communication unit 25 are provided. A battery (not shown) is provided inside the case 20, and each unit is driven by receiving power supply from the battery.

[0041] (Description of the digital stethoscope device 21) Returning to FIG. 4, the digital stethoscope device 21 picks up heart sounds together with lung sounds, converts them into electrical signals, and supplies them to the control unit 24.

[0042] As shown in FIG. 5, the digital stethoscope device 21 has a sound collection unit 211 and a microphone 212. FIG. 5 is a diagram showing the positional relationship of the sound collection unit 211, the microphone 212, etc. with respect to the subject P when the opposing portion 20A of the case 20 of the measuring device 2 is attached to the subject P via the attachment portion 200.

[0043] When the facing part 20A of the case 20 is attached to the chest or back of the subject P via the attachment part 200, the sound collecting part 211 is provided at a position facing the body side of the subject P. The sound collecting part 211 collects the sounds generated inside the subject P (in this example, lung sounds and heart sounds). The sound collecting part 211 has substantially the same configuration as the chest piece of a stethoscope, eliminates noise, and collects necessary lung sounds and heart sounds (auscultatory sounds).

[0044] The microphone 212 converts the lung sounds and heart sounds (auscultatory sounds) collected by the sound collecting part 211 into electrical signals. The electrical signals converted by the microphone 212 are supplied to the control part 24. The microphone 212 may be built into the sound collecting part 211, or the microphone 212 may be a device separate from the sound collecting part 211.

[0045] (Description of the saturation oxygen concentration sensor 22) Returning to FIG. 4, the saturation oxygen concentration sensor 22 measures the heart rate together with the saturation oxygen concentration (transcutaneous arterial oxygen saturation, saturation (SpO2)) and converts it into an electrical signal. The converted electrical signal is supplied to the control part 24.

[0046] As shown in FIG. 6, the saturation oxygen concentration sensor 22 has an attachment part 221, and a light emitting part 222 and a light receiving part 223 attached to the attachment part 221. FIG. 6 is a diagram showing the positional relationship of the attachment part 221, the light emitting part 222, the light receiving part 223, etc. with respect to the subject P when the facing part 20A of the case 20 of the measuring device 2 is attached to the subject P via the attachment part 200. The attachment part 221, the light emitting part 222, and the light receiving part 223 are provided at positions facing the body side of the subject P when the facing part 20A of the case 20 is attached to the chest or back of the subject P via the attachment part 200.

[0047] The attachment part 221 has a concave shape (concave spherical shape, dome shape) that is recessed with respect to the subject P. The edge of the opening of the attachment part 221 is in close contact with the skin of the subject P. The light emitting part 222 and the light receiving part 223 are attached to the part of the attachment part 221 that faces the subject P, that is, the part on the opposite side of the opening part, and is in the deepest part (bottom part) of the recess.

[0048] As shown by the solid arrows in FIG. 6, the light emitting part 222 emits red light L1 and infrared light L2 toward the subject P. Similarly, as shown by the solid arrows in FIG. 6, the light receiving part 223 receives the red light L10 and the infrared light L20 that are emitted from the light emitting part 222 and reflected by the subject P, and converts the saturation oxygen concentration and heart rate in the arterial blood into electrical signals based on the red light L10 and the infrared light L20.

[0049] Since the light emitting part 222 and the light receiving part 223 are attached to the part of the attachment part 221 that faces the subject P, that is, the part on the opposite side of the opening part, and is in the deepest part (bottom part) of the recess, it is possible to shield external light L3 (see the broken arrow in FIG. 6), particularly from reaching the light receiving part 223. That is, even if the external light L3 enters the recessed space of the attachment part 221 through the gap between the skin of the subject P and the case 20 and through the opening of the attachment part 221, it can be prevented from entering the light receiving part 223.

[0050] (Description of the electrocardiogram sensor 23) Returning to FIG. 4, in this example, the electrocardiogram sensor 23 is a multifunctional sensor. The electrocardiogram sensor 23 of the multifunctional sensor measures the electromyogram together with the electrocardiogram and converts it into an electrical signal. That is, the electromyogram sensor of the multifunctional sensor measures the action potential (electromyogram potential) generated when the muscle cells (muscle fibers) of the subject P contract as a vital sign. The converted electrical signal is supplied to the control unit 24. The electrocardiogram sensor 23 in this example uses 1 channel that can obtain a representative value. Note that, as the electrocardiogram sensor 23, 10 channels other than the 1 channel in this example may be used.

[0051] As shown in FIG. 7, the electrocardiogram sensor 23 has an attachment portion 231 and a plurality of, in this example, three electrodes 232 attached to the attachment portion 231. FIG. 7 is a diagram showing the positional relationship of the attachment portion 231, the three electrodes 232, etc. with respect to the subject P when the opposing portion 20A of the case 20 of the measuring device 2 is attached to the subject P via the attachment portion 200. The attachment portion 231 and the three electrodes 232 are provided at positions facing the body side of the subject P when the opposing portion 20A of the case 20 is attached to the chest or back of the subject P via the attachment portion 200.

[0052] The attachment portion 231 has a concave shape that is recessed with respect to the subject P. The edge of the opening portion of the attachment portion 231 is in close contact with the skin of the subject P. The three electrodes 232 are attached to the portion of the attachment portion 221 that faces the subject P, that is, the portion on the opposite side of the opening portion, and at the innermost part (bottom portion) of the recess.

[0053] The three electrodes 232 are attached to the skin of the subject P via an adhesive (not shown), and collect and measure the activities of the heart of the subject P and the contraction activities of the muscle cells of the subject P and convert them into electrical signals. This electrical signal is output to the control unit 24.

[0054] (Description of the control unit 24) Returning to FIG. 4, the control unit 24 is composed of other elements including hardware such as a CPU (Central Processing Unit), a storage part (ROM (Read Only Memory), RAM (Random Access Memory), non-volatile memory, etc.). The control unit 24 controls the entire measuring device 2 by executing a control application program (not shown) stored in the storage unit, and functions as a time stamp unit 241, an audio processing unit 242, a saturated oxygen concentration processing unit 243, and a synchronization unit 245 to execute measurement processing.

[0055] The time stamp unit 241 issues a time stamp indicating the timing of the start of measurement based on a clock (not shown).

[0056] The voice processing unit 242 converts the electrical signals of lung sounds and heart sounds input from the digital stethoscope device 21 into digital data, in this example, MP3 data, attaches the time stamp issued by the time stamp unit 241, and supplies it to the synchronization unit 245.

[0057] The saturation oxygen concentration processing unit 243 performs a moving average process on the saturation oxygen concentration and heart rate values input from the saturation oxygen concentration sensor 22, and attaches the time stamp issued by the time stamp unit 241 to the text data indicating the saturation oxygen concentration and heart rate values obtained as a result, and supplies it to the synchronization unit 245.

[0058] The electrocardiogram processing unit 244 performs a moving average process on the values of the heart's activity and the contraction activity of muscle cells input from the electrocardiogram sensor 23, and attaches the time stamp issued by the time stamp unit 241 to the text data indicating the values of the heart's activity and the contraction activity of muscle cells obtained as a result, and supplies it to the synchronization unit 245.

[0059] The synchronization unit 245 synchronizes the lung sound and heart sound data (MP3 data) output from the voice processing unit 242, the saturation oxygen concentration and heart rate data (text data) output from the saturation oxygen concentration processing unit 243, and the heart activity and muscle cell contraction activity data (text data) output from the electrocardiogram processing unit 244 in time based on the time stamps attached to each, and outputs them to the data processing storage device 3 via the communication unit 25. Hereinafter, the synchronized MP3 data and text data are appropriately referred to as synchronized data.

[0060] Note that a memory (not shown) may be provided in the measuring device 2, and each data output from each of the processing units 242, 243, 244 and the synchronized data output from the synchronization unit 245 may be stored in the memory.

[0061] (Description of the communication unit 25) The communication unit 25 constitutes a communication line together with the communication unit 31 of the data processing and storage device 3 described below. In this example, the communication line is a wireless communication including short-range communication. Note that the communication line may be a communication technology such as wired communication in addition to wireless communication.

[0062] (Description of the data processing and storage device 3) The data processing and storage device 3 will be described. The data processing and storage device 3 is a smart device (information device, terminal device, external medium, external media). The data processing and storage device 3 includes a communication unit 31, a control unit 32, a storage unit 33, an output unit 34, and an operation unit 35 in a case 30 as shown in FIG. 8. In this example, the data processing and storage device 3 is of a handy type, and an operator such as a doctor (not shown) can operate the operation unit 35 while holding it with one hand, or the operator can operate the operation unit 35 with the other hand while holding it with one hand. Note that the data processing and storage device 3 may be of a tablet type or a personal computer type.

[0063] In this example, the case 30 is made of an arbitrary material, for example, synthetic resin. The case 30 can be configured to be lightweight, thin, and small so as not to impose a load on the operator during use. The case 30 has a hollow shape, and the communication unit 31, the control unit 32, the storage unit 33, the output unit 34, and the operation unit 35 are housed inside.

[0064] The communication unit 31 constitutes a communication line together with the communication unit 25 of the measurement device 2. The communication unit 31 receives digital data transmitted from the communication unit 25 of the measurement device 2, that is, synchronized MP3 data and text data.

[0065] The control unit 32 is composed of other elements including hardware such as a CPU and storage parts (ROM, RAM, non-volatile memory, etc.). The control unit 32 controls the entire data processing and storage device 3 by executing a control application program (not shown) stored in the storage unit, and functions as a processing unit 321 to execute storage processing.

[0066] The processing unit 321 performs predetermined processing on the synchronization data received by the communication unit 31 and stores it in the storage unit 33. For example, the processing unit 321 performs white noise removal processing, specific frequency extraction processing, specific frequency attenuation processing, and each frequency intensity extraction processing on the MP3 data of lung sounds and heart sounds.

[0067] The storage unit 33 stores (memorizes) the synchronization data subjected to predetermined processing by the processing unit 321. The storage unit 33 is, for example, a memory such as a RAM, a ROM, and a non-volatile memory.

[0068] The output unit 34 outputs the synchronization data stored in the storage unit 33. The mode output by the output unit 34 is at least one of display, printing, or transmission.

[0069] The output unit 34 is a display device (display) and a speaker, outputs the MP3 data of the synchronization data stored in the storage unit 33 as sound, and displays text data. The output unit 34 is a communication device (communication module) and can also transfer a plurality of synchronization digital data (MP3 data and text data).

[0070] The operation unit 35 performs operations for starting, pausing, and ending the medical vital sign measurement system 1, and operations for starting, pausing, and ending the output unit 34. Note that an operation unit for performing some of the operations performed by the operation unit 35 of the data processing and storage device 3, for example, operations for starting, pausing, and ending the measurement device 2, may be provided in the measurement device 2.

[0071] (Operation of the measurement device 2) With reference to the flowchart of FIG. 9, the operation of the medical vital sign measurement system 1 will be described.

[0072] When the facing part 20A of case 20 is adhered to the skin of the chest of the subject P via the adhesive 200 and the power of the measurement device 2 is turned on, in step S1, the time stamp unit 241 issues a time stamp.

[0073] In step S2, the digital stethoscope device 21 starts the process of collecting the lung sounds and heart sounds emitted from the chest of the subject P and outputting them as electrical signals. Also, the saturation oxygen concentration sensor 22 starts the process of measuring the saturation oxygen concentration and heart rate from the blood vessels of the subject P and outputting them as electrical signals. Furthermore, the electrocardiogram sensor 23 starts the process of collecting and measuring the activities of the heart of the subject P and the contraction activities of the muscle cells of the subject P and outputting them as electrical signals.

[0074] In step S3, the audio processing unit 242 of the control unit 24 starts the process of converting the electrical signals of the lung sounds and heart sounds output from the digital stethoscope device 21 into digital data (MP3 data), attaching the time stamp issued by the time stamp unit 241, and outputting it to the synchronization unit 245. The saturation oxygen concentration processing unit 243 starts the process of converting the electrical signals of the saturation oxygen concentration and heart rate output from the saturation oxygen concentration sensor 22 into digital data, attaching the time stamp issued by the time stamp unit 241, and outputting it to the synchronization unit 245. The electrocardiogram processing unit 244 starts the process of converting the electrical signals of the heart activities and muscle cell contraction activities output from the electrocardiogram sensor 23 into digital data, attaching the time stamp issued by the time stamp unit 241, and outputting it to the synchronization unit 245.

[0075] In step S4, the synchronization unit 245 synchronizes the MP3 data output from the audio processing unit 242, the text data indicating the saturation oxygen concentration and heart rate output from the saturation oxygen concentration processing unit 243, and the text data indicating the heart activities and muscle cell contraction activities output from the electrocardiogram processing unit 244 based on the time stamps assigned to each of them, and starts the process of outputting them to the data processing and storage device 3 via the communication unit 25.

[0076] Note that in the data processing and storage device 3, the power is turned on before the above-described processing of the measuring device 2 is executed, and the synchronization data transmitted by the synchronization unit 245 of the measuring device 2 is processed by the processing unit 321 and stored in the storage unit 33.

[0077] The above processing is executed until, for example, the power supply of the measuring device 2 is turned off.

[0078] (Description of a modified example of the digital stethoscope device 210) FIG. 10 is an explanatory diagram showing a modified example of the digital stethoscope device 210 of the wearable vital sign measuring device. FIG. 11 is a flowchart showing signal processing by the digital stethoscope device 210 shown in FIG. 10. In FIG. 10, the same reference numerals as those in FIG. 3 denote the same objects.

[0079] The digital stethoscope device 21 shown in FIG. 4 has a sound collecting unit 211 and a microphone 212, and collects heart sounds together with lung sounds via the sound collecting unit 211 and the microphone 212, converts them into electrical signals, and supplies them to the control unit 24.

[0080] The digital stethoscope device 210 shown in FIG. 10 has a sound collecting unit (not shown), a lung sound and heart sound collecting microphone 213, an external environmental sound collecting microphone 214, and a signal processing unit 215. The sound collecting unit and the lung sound and heart sound collecting microphone 213 are provided on the opposing portion 20A of the case 20 of the measuring device 2 facing the mounting portion 200 side. The external environmental sound collecting microphone 214 is provided on the opposing portion 20A of the case 20 of the measuring device 2 facing the opposite side to the mounting portion 200. The signal processing unit 215 is provided at an arbitrary location on the case 20 of the measuring device 2.

[0081] Hereinafter, signal processing by the digital stethoscope device 210 will be described with reference to the flowchart shown in FIG. 11. In step S2 of the flowchart shown in FIG. 9, the digital stethoscope device 210 performs signal processing as follows for the signal processing performed by the digital stethoscope device 21.

[0082] When the power supply of the measuring device 2 is turned on, in step S21, the lung sound and heart sound collecting microphone 213 collects lung sounds and heart sounds. At this time, the lung sound and heart sound collecting microphone 213 also simultaneously collects external environmental sounds.

[0083] In step S22, the external environment sound collecting microphone 214 collects only the external environment sound.

[0084] In step S23, the signal processing unit 215 adjusts the level of the external environment sound collected by the external environment sound collecting microphone 214 to match the levels of the lung sound and heart sound collected by the lung and heart sound collecting microphone 213 and the external environment sound.

[0085] In step S24, the signal processing unit 215 subtracts the external environment sound collected by the external environment sound collecting microphone 214 from the lung sound and heart sound collected by the lung and heart sound collecting microphone 213 and the external environment sound, leaving only the lung sound and heart sound without the external environment sound.

[0086] In step S25, the signal processing unit 215 converts only the lung sound and heart sound into an electrical signal and supplies it to the control unit 24. Thereby, the signal processing by the digital stethoscope device 210 is completed.

[0087] Note that the digital stethoscope device 210 may be provided with a changeover switch (not shown) and configured to switch between a mode for eliminating the external environment sound and a mode for not eliminating the external environment sound.

[0088] Also, the digital stethoscope device 210 is for collecting lung sounds and heart sounds with the lung and heart sound collecting microphone 213, but it may be for collecting at least lung sounds with a lung sound collecting microphone.

[0089] Furthermore, in the measuring device 2, it is optional whether to use the digital stethoscope device 21 shown in FIG. 4 or the digital stethoscope device 210 shown in FIG. 10.

[0090] (Another example of the mounting part) The mounting part 200 in the example of FIG. 1 mounts the measuring device 2 on the chest or back of the subject P with an adhesive 200. The mounting part 200 for mounting the measuring device 2 is not limited to this adhesive 200. For example, as shown in FIG. 10, a fixing tape 201 can be used as the mounting part 201. This fixing tape 201 adheres to the case 20 of the measuring device 2 and the skin of the subject P with the opposing part of the case 20 of the measuring device 2 applied to the skin of the subject P, and fixes the case 20 to the subject P.

[0091] Also, as shown in FIG. 11, a fixing belt 202 can be used as the mounting part 202. This fixing belt 202 is attached to the case 20 of the measuring device 2, and with the opposing part of the case 20 applied to the skin of the subject P, it tightens the subject P to fix the case 20 to the subject P.

[0092] (Explanation of the extended functions of the measuring device 2) Hereinafter, the extended functions of the measuring device 2 and the medical vital sign measurement system 1 will be described.

[0093] The electrocardiogram sensor 23 (electromyogram sensor of the multifunctional sensor) of the measuring device 2 can take an electromyogram, so it becomes one of the diagnostic tools for sleep apnea syndrome (SAS), and the evaluation of daily activities can also be applied to the healthcare of the elderly. That is, since there is a relative relationship between the decline of cardiac function and the decline of muscle strength, by measuring the electromyogram potential of the subject P, the daily activities of the subject P (the elderly) can be evaluated and applied to the healthcare of the subject P (the elderly).

[0094] Also, since the electrocardiogram sensor 23 of the measuring device 2 can take an electrocardiogram, if paroxysmal atrial fibrillation can be recorded, it can also be used for the prevention of cardioembolism.

[0095] A thermometer can be provided in the measuring device 2. The thermometer measures the body temperature of the subject P as a vital sign. By measuring the body temperature of this thermometer, the body temperature of the subject P can be obtained, so the safety of the subject P can be confirmed.

[0096] Acceleration sensors, gyro sensors, etc. can be provided in the measuring device 2. The acceleration sensors, gyro sensors, etc. measure the body movement of the subject P as vital signs. By synchronizing the body movement or respiratory rate of the subject P measured by these acceleration sensors, gyro sensors, etc. with the lung sounds, heart sounds of the subject P measured by the digital stethoscope device 21, and the saturation oxygen concentration and heart rate of the subject P measured by the saturation oxygen concentration sensor 22 in terms of time, the influence during body movement (exercise) can be evaluated.

[0097] The electromyogram measured by the electromyography sensor, the electrical signal of the heart measured by the electrocardiograph, the body temperature measured by the thermometer, and the body movement or respiratory rate measured by acceleration sensors, gyro sensors, etc. can be output as digital data by means of display, printing, or transmission, etc.

[0098] (Explanation of the utilization of the medical vital sign measurement system 1) The medical vital sign measurement system 1 can be utilized not only for the preventive healthcare described above but also for telemedicine and home medical treatment.

[0099] According to the medical vital sign measurement system 1, digital data in which the lung sounds, heart sounds, saturation oxygen concentration, heart rate, electrocardiogram, and electromyogram of the subject P are synchronized in terms of time can be obtained at any time at a remote location. Thereby, the prediction and judgment of airway diseases and interstitial diseases, which will still be important in the future, can be accurately and precisely performed.

[0100] It is possible to analyze the correlations among respiratory sounds, heart sounds, electrocardiograms, electromyograms, and saturated oxygen concentrations. That is, by performing a combination of multiple indicators and developing a system for future analysis by artificial intelligence, it is possible to detect early pathological conditions that could not be discriminated before. Also, since the medical vital sign measurement system 1 can collect respiratory sounds, it is also possible to calculate the respiratory rate from the information of the collected respiratory sounds as needed, separately from the above-described acceleration sensors, gyro sensors, etc. As the unit of the respiratory rate, for example, it can be arbitrarily selected as how many times per minute or how many times per 30 seconds.

[0101] In daily life, it is possible to detect early pathological conditions and changes in the pathological conditions (especially acute) of patients with respiratory diseases. That is, until now, the above detections could not be obtained unless a medical institution was visited for examination, but with the measuring device 2 and the medical vital sign measurement system 1, it is possible to detect changes in scenes with a lot of body movement in daily life.

[0102] The oxygen saturation concentration that can be measured while being worn on the subject P is an advantage because it can obtain nighttime findings such as sleep apnea syndrome.

[0103] Also, electrocardiogram and electromyogram become important information when predicting and judging the symptoms of cardiovascular diseases. Therefore, by simultaneously measuring the electrocardiogram and electromyogram, blood oxygen (saturated oxygen concentration), and auscultatory sounds (lung sounds), it is possible to accurately and precisely predict and judge the symptoms of sleep apnea syndrome. Moreover, it is possible to simultaneously perform a health diagnosis of the respiratory system and a health diagnosis of the cardiovascular system.

[0104] (Explanation of examples other than the embodiment) The wearable type vital sign measuring device of this invention is not limited to the above-described embodiment. In the above-described embodiment, as the vital sign detection unit, it has three components: a digital stethoscope device 21, a saturation oxygen concentration sensor 22, and an electrocardiogram sensor 23. However, in this invention, it may have at least two out of the digital stethoscope device 21, the saturation oxygen concentration sensor 22, and the electrocardiogram sensor 23.

[0105] In the above-described embodiment, the digital stethoscope device 21 collects heart sounds in addition to lung sounds and outputs them as electrical signals. However, the digital stethoscope device 21 can also collect only lung sounds and output them as electrical signals.

[0106] Also, the processing unit 321 of the data processing and storage device 3 performs white noise removal processing, specific frequency extraction processing, specific frequency attenuation processing, and each frequency intensity extraction processing on the MP3 data of lung sounds and heart sounds. However, it can also perform at least one of these processes.

[0107] Furthermore, the electrocardiogram sensor 23 collects electromyograms in addition to electrocardiograms and outputs them as electrical signals. However, the electrocardiogram sensor 23 can also collect only electrocardiograms and output them as electrical signals.

[0108] (Summary of Effects) The measuring device 2 and the medical vital sign measurement system 1 according to this embodiment are configured and operate as described above. Hereinafter, their effects will be described.

[0109] (1) As described above, the measuring device 2 is a measuring device 2 that can be worn on the chest or back of the subject P, when the measuring device 2 is worn on the chest or back of the subject P, an opposing portion 20A that faces the chest or back of the subject P, a digital stethoscope device 21 provided on the opposing portion 20A that collects the lung sounds of the subject P from the chest or back of the subject P that the opposing portion 20A faces and outputs them as electrical signals, A saturation oxygen concentration sensor 22 provided in the facing part 20A, which collects the saturation oxygen concentration of the subject P from the chest or back of the subject P facing the facing part 20A and outputs it as an electrical signal. An electrocardiogram sensor 23 provided in the facing part 20A, which collects the cardiac activity of the subject P from the chest or back of the subject P facing the facing part 20A and outputs it as an electrical signal. It includes.

[0110] In this way, the measuring device 2 collects lung sounds, measures the saturation oxygen concentration and electrocardiogram from one location such as the chest or back of the subject P, so that lung sounds, saturation oxygen concentration and electrocardiogram with less time lag can be measured. As a result, the possibility of the subject's condition can be diagnosed more widely.

[0111] In addition, since the measuring device 2 can simultaneously measure blood oxygen (saturation oxygen concentration), auscultation sound (lung sound) and electrocardiogram, it can accurately predict and judge the symptoms of sleep apnea syndrome, and moreover, it can simultaneously perform a health diagnosis of the respiratory system and a health diagnosis of the cardiovascular system.

[0112] (2) The measuring device 2 can be provided with a synchronization unit 245 that synchronizes and outputs the electrical signal from the digital stethoscope device 21 and the electrical signal from the saturation oxygen concentration sensor 22 in time. By configuring in this way, the measuring device 2 can synchronize the lung sound and the saturation oxygen concentration more accurately.

[0113] (3) The measuring device 2 can be configured such that the digital stethoscope device 21 can collect heart sounds in addition to lung sounds and output them as electrical signals. By configuring in this way, compared with the case of only lung sounds, the symptoms of respiratory diseases can be predicted and judged more accurately.

[0114] (4) The measuring device 2 can have the digital stethoscope device 210 eliminate external environmental noise and collect only lung sounds and heart sounds, which are then output as electrical signals. By configuring it in this way, noise such as external environmental noise can be eliminated, and the symptoms of respiratory diseases can be predicted and judged accurately and precisely.

[0115] (5) The measuring device 2 The saturation oxygen concentration sensor 22 has an attachment part 221 and a light emitting part 222 and a light receiving part 223 attached to the attachment part 221. The light emitting part 222 emits red light L1 and infrared light L2 toward the subject P. The light receiving part 223 receives the red light L10 and the infrared light L20 that are emitted from the light emitting part 222 and reflected by the subject P, and outputs the saturation oxygen concentration in the arterial blood as the electrical signal based on the red light L10 and the infrared light L20.

[0116] By configuring it in this way, even when the measuring device 2 is worn on the chest or back of the subject P to measure the saturation oxygen concentration (see Fig. 11(B)), it can measure the saturation oxygen concentration with the same accuracy as when it is worn on the fingertip of the subject P to measure the saturation oxygen concentration (see Fig. 11(A)).

[0117] (6) The measuring device 2 The attachment part 221 has a concave shape that is recessed with respect to the subject P, and the light emitting part 222 and the light receiving part 223 can be attached to the part of the attachment part 221 that faces the subject P.

[0118] By configuring it in this way, the measuring device 2 can shield external light L3, particularly from reaching the light receiving part 223, so that it can measure the saturation oxygen concentration without being affected by external light L3.

[0119] (7) The measuring device 2 can collect the heart rate in addition to the saturated oxygen concentration by the saturated oxygen concentration sensor 22 and output it as an electrical signal. By configuring it in this way, the measuring device 2 can predict and judge the symptoms of respiratory diseases more accurately and precisely compared to the case where only the saturated oxygen concentration is measured.

[0120] (8) The measuring device 2 can collect the contraction activity of muscle cells in addition to the activity of the heart by the electrocardiogram sensor 23 and output it as an electrical signal. By configuring it in this way, the measuring device 2 can predict and judge the symptoms of cardiovascular diseases more accurately and precisely compared to the case where only the electrocardiogram is measured.

[0121] (9) The measuring device 2 can be attached to the chest or back of the subject P near the lungs or near the lungs and heart of the subject P through the adhesive 200 as the attachment part 200. By configuring it in this way, the measuring device 2 can suppress the delay during the measurement of the saturated oxygen concentration and heart rate by the saturated oxygen concentration sensor 22 during the measurement of lung sounds and heart sounds by the digital stethoscope device 21, and can predict and judge the symptoms of respiratory diseases more accurately and precisely.

[0122] (10) The measuring device 2 can also be attached to the chest or back of the subject P through the adhesive 200 as the attachment part 200. By configuring it in this way, unlike the saturated oxygen concentration meter to be attached to the fingertips of the subject P's hand, the earlobe of the subject P, or in some cases, the fingertips of the subject P's foot, the measuring device 2 can collect the saturated oxygen concentration without coming off during activities and light exercise in daily life. From the above, the measuring device 2 according to this embodiment can collect lung sounds and saturated oxygen concentration during activities and light exercise in daily life, which was mainly collected at rest until now.

[0123] (11) Since the medical vital sign measurement system 1 includes the measuring device 2 of the above (1) to (9), it can achieve the same effects as the measuring device 2 of the above (1) to (10).

Description of Symbols

[0124] 1 Medical Vital Sign Measurement System 2 Wearable Vital Sign Measurement Device (Measurement Device) 20 Case 20A Opposing Part 200 Adhesive (Mounting Part) 201 Fixing Tape (Mounting Part) 202 Fixing Belt (Mounting Part) 21 Digital Stethoscope (Collection Part, First Collection Part) 211 Sound Collecting Part 212 Microphone 210 Digital Stethoscope (Collection Part, First Collection Part) 213 Microphone for Collecting Lung Sounds and Heart Sounds 214 Microphone for Collecting External Environmental Sounds 215 Signal Processing Part 22 Saturation Oxygen Concentration Sensor (Collection Part, Second Collection Part) 221 Mounting Part 222 Light Emitting Part 223 Light Receiving Part 23 Electrocardiogram Sensor 231 Mounting Part 232 Electrode 24 Control Part 241 Timestamp Part 242 Voice Processing Part 243 Saturation Oxygen Concentration Processing Part 244 Electrocardiogram Processing Part 245 Synchronization Part 25 Communication Part 3 Data Processing and Storage Device 30 Case 31 Communication Part 32 Control Part 321 Processing Part 33 Storage Part 34 Output Part 35 Operation Part A Time L1 Red Light (Red Light Emitted from Light Emitting Part 222) L2 Infrared Light (Infrared Light Emitted from Light Emitting Part 222) L10 Red light (red light reflected from the subject P) L20 Infrared light (infrared light reflected from the subject P) L3 Light from the outside P Subject

Claims

1. A wearable vital sign measurement device that can be worn on the chest or back of a subject, When the wearable vital sign measurement device is worn on the chest or back of the subject, an opposing portion that opposes the chest or back of the subject, A vital sign detection unit provided in the opposing portion, which collects the vital signs of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals, Comprising, The vital sign detection unit, A digital stethoscope device provided in the opposing portion, which collects the lung sounds of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals, A saturation oxygen concentration sensor provided in the opposing portion, which collects the saturation oxygen concentration of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals, An electrocardiogram sensor provided in the opposing portion, which collects the activity of the heart of the subject from the chest or back of the subject that the opposing portion faces and outputs them as electrical signals, Among them, having at least two, A wearable vital sign measurement device characterized by this.

2. Comprising a synchronization unit that synchronizes and outputs at least two of the electrical signals from the digital stethoscope device, the electrical signals from the saturation oxygen concentration sensor, and the electrical signals from the electrocardiogram sensor in time. The wearable vital sign measurement device according to claim 1, characterized by this.

3. The digital stethoscope device picks up heart sounds in addition to the lung sounds. The wearable vital sign measurement device according to claim 1, characterized by this.

4. The digital stethoscope device, At least a microphone for collecting lung sounds that collects at least lung sounds and external environmental sounds, A microphone for collecting external environmental sounds that collects only external environmental sounds, A signal processing unit, Having, The signal processing unit, Signal processing for adjusting the level of the external environmental sound collected by the external environmental sound collection microphone to the level of at least the lung sounds and external environmental sounds collected by the lung sound collection microphone, Signal processing for subtracting the external environmental sound collected by the external environmental sound collection microphone from at least the lung sounds and external environmental sounds collected by the lung sound collection microphone to obtain only at least lung sounds, Signal processing for converting only at least lung sounds into electrical signals and outputting them, Performing, The wearable vital sign measuring device according to claim 1, characterized in that...

5. The saturation oxygen concentration sensor includes an attachment portion, a light emitting portion and a light receiving portion attached to the attachment portion, The light emitting portion emits red light and infrared light toward the subject, The light receiving portion receives the red light and the infrared light emitted from the light emitting portion and reflected from the subject P, and outputs the saturation oxygen concentration in the arterial blood as the electrical signal based on the red light and the infrared light. The wearable vital sign measuring device according to claim 1, characterized in that...

6. The attachment portion has a concave shape recessed with respect to the subject, The light emitting portion and the light receiving portion are attached to a portion of the attachment portion facing the subject. The wearable vital sign measuring device according to claim 5, characterized in that...

7. The vital signs collected by the saturation oxygen concentration sensor and output as the electrical signal are the heart rate in addition to the saturation oxygen concentration. The wearable vital sign measuring device according to claim 1, characterized in that...

8. The electrocardiogram sensor is a multifunctional sensor, and the vital signs collected by the electrocardiogram sensor of the multifunctional sensor and output as the electrical signal are the contraction activities of the subject's muscle cells in addition to the activities of the subject's heart. The wearable vital sign measuring device according to claim 1, characterized in that...

9. The facing portion has a mounting portion that mounts the facing portion near the subject's lungs or near the lungs and heart, and on the subject's chest or back. The wearable vital sign measuring device according to claim 1, characterized in that...

10. The mounting portion is an adhesive that adheres the facing portion to the subject's skin, or a fixing tape that adheres to the facing portion and the subject's skin to fix the facing portion to the subject with the facing portion applied to the subject's skin, or a fixing belt that is attached to the facing portion and tightens the subject with the facing portion applied to the subject's skin to fix the facing portion to the subject and is at least one of them. The wearable vital sign measuring device according to claim 9, characterized in that...

11. The wearable vital sign measuring device according to any one of claims 1 to 10, and a data processing and storage device, comprising The wearable vital sign measurement device has a communication unit that transmits at least two of the electrical signals from the digital stethoscope device, the electrical signal from the saturation oxygen concentration sensor, and the electrical signal from the electrocardiogram sensor as synchronous digital data. The data processing and storage device constitutes a communication line together with the communication unit of the wearable vital sign measurement device, and has a communication unit that receives and outputs the synchronous digital data transmitted from the communication unit of the wearable vital sign measurement device. a processing unit that processes and outputs the digital data of sound among the synchronous digital data output from the communication unit; a storage unit that stores the synchronous digital data output from the processing unit; an output unit that outputs the synchronous digital data output from the processing unit and the synchronous digital data stored in the storage unit; and characterized in that it is a medical vital sign measurement system.

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