Wearable vital signs measuring device and medical vital signs measuring 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 technology]

[0002] An example of a device for measuring a subject's vital signs (signs of life) is shown in Patent Document 1. Patent Document 1 will be described below.

[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 of the following data from a patient: blood oxygen data, auscultatory sound data, eye image data, and eye blood flow data. The data processing unit processes the multiple 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, auscultatory sound, eye image, and eye blood flow.

[0004] Here, blood oxygen (saturated oxygen concentration) and auscultatory sounds (lung sounds) are important information when predicting and determining symptoms of respiratory disease. Therefore, by simultaneously acquiring and processing blood oxygen (saturated oxygen concentration) and auscultatory sounds (lung sounds) and synchronizing them in time, symptoms of respiratory disease can be predicted and determined accurately and precisely.

[0005] Furthermore, electrocardiograms provide important information when predicting and assessing the symptoms of cardiovascular disease. Therefore, by simultaneously measuring electrocardiograms, blood oxygen (saturated oxygen concentration), and auscultatory sounds (lung sounds), it is possible to accurately predict and assess the symptoms of sleep apnea syndrome. Furthermore, health checkups of the respiratory system and cardiovascular system can be performed simultaneously. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent Publication No. 2021-176056 Summary of the Invention [Problem to be solved by the invention]

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

[0008] Furthermore, the medical system and medical information processing device of Patent Document 1 detects changes in the state of the circulatory system associated with an infection from at least two of the following data: blood oxygen data, auscultatory sound data, eye image data, and eye blood flow data. As a result, the medical system and medical information processing device of Patent Document 1 cannot accurately and precisely predict or diagnose symptoms of sleep apnea syndrome, and furthermore cannot simultaneously perform health checkups of the respiratory system and 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 diagnose symptoms of respiratory diseases, and can accurately and precisely predict and diagnose symptoms of sleep apnea syndrome, and can simultaneously perform health checkups of the respiratory system and the circulatory system. [Means for solving the problem]

[0010] In order to solve the above-mentioned problems, a wearable vital sign measuring device according to a 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, and comprises: a facing part that faces the chest or back of the subject when the wearable vital sign measuring device is worn on the chest or back of the subject; and a vital sign detection part that is provided on the facing part and collects the subject's vital signs from the chest or back of the subject that the facing part faces and outputs them as electrical signals, wherein the vital sign detection part comprises at least two of: a digital auscultation device that is provided on the facing part and collects the subject's lung sounds from the chest or back of the subject that the facing part faces and outputs them as electrical signals; a saturated oxygen concentration sensor that is provided on the facing part and collects the subject's saturated oxygen concentration from the chest or back of the subject that the facing part faces and outputs them as electrical signals; and an electrocardiogram sensor that is provided on the facing part and collects the subject's cardiac activity from the chest or back of the subject that the facing part faces and outputs them as electrical signals.

[0011] In the wearable vital sign measuring device of this invention, it is preferable to include a synchronization unit that temporally synchronizes and outputs at least two of the electrical signals from the digital auscultation device, the electrical signal from the saturated oxygen concentration sensor, and the electrical signal from the electrocardiogram sensor.

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

[0013] In the wearable vital sign measurement device of this invention, it is preferable that the digital auscultation device has a lung sound collecting microphone that collects at least lung sounds and external environmental sounds, an external environmental sound collecting microphone that collects only external environmental sounds, and a signal processing unit, and that the signal processing unit performs signal processing to adjust the level of the external environmental sounds collected by the external environmental sound collecting microphone to the level of at least the lung sounds and external environmental sounds collected by the lung sound collecting microphone, signal processing to subtract the external environmental sounds collected by the external environmental sound collecting microphone from at least the lung sounds and external environmental sounds collected by the lung sound collecting microphone to leave at least lung sounds only, and signal processing to convert at least lung sounds only into an electrical signal and output it.

[0014] In the wearable vital sign measuring device of this invention, it is preferable that the saturated oxygen concentration sensor has an attachment part, and an emitter and a receiver attached to the attachment part, the emitter emitting red light and infrared light toward the subject, and the receiver receiving the red light and infrared light emitted from the emitter and reflected from the subject, and outputting the saturated oxygen concentration in the arterial blood as the electrical signal based on the red light and infrared light.

[0015] In the wearable vital sign measuring device of this invention, it is preferable that the attachment portion has a concave shape that is recessed toward the subject, and that the light-emitting portion and the light-receiving portion are attached to a portion of the attachment portion that faces the subject.

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

[0017] In the wearable vital sign measuring device of this invention, it is preferable that the electrocardiogram sensor is a multi-function sensor, and the vital signs collected by the electrocardiogram sensor of the multi-function sensor and output as the electrical signals are the contractile activity of the subject's muscle cells in addition to the activity of the subject's heart.

[0018] In the wearable vital sign measurement device of this invention, it is preferable that the opposing part has an attachment part that attaches the opposing part to the subject's chest or back near the subject's lungs or near the lungs or heart.

[0019] In the wearable vital sign measuring device of this invention, it is preferable that the attachment part is at least one of an adhesive that adheres the opposing part to the subject's skin, a fixing tape that adheres the opposing part to the subject's skin and fixes the opposing part to the subject while the opposing part is in contact with the subject's skin, or a fixing belt that is attached to the opposing part and tightens around the subject while the opposing part is in contact with the subject's skin to fix the opposing part to the subject.

[0020] In order to solve the above-mentioned problems, a medical vital sign measurement system according to a first aspect of the present invention comprises the wearable vital sign measurement device of the present invention and a data processing and storage device, wherein the wearable vital sign measurement device has a communication unit that transmits at least two of the electrical signals from the digital auscultation device, the electrical signal from the saturated oxygen concentration sensor, and the electrical signal from the electrocardiogram sensor as synchronized digital data, and the data processing and storage device forms a communication line together with the communication unit of the wearable vital sign measurement device and comprises: a communication unit that receives and outputs the synchronized digital data transmitted from the communication unit of the wearable vital sign measurement device; a processing unit that processes and outputs digital sound data from the synchronized digital data output from the communication unit; a storage unit that stores the synchronized digital data output from the processing unit; and an output unit that outputs the synchronized digital data output from the processing unit and the synchronized digital data stored in the storage unit. [Effects of the Invention]

[0021] The wearable vital sign measuring device and medical vital sign measuring system of this invention can accurately and precisely predict and diagnose symptoms of respiratory diseases, and can accurately and precisely predict and diagnose symptoms of sleep apnea syndrome, and can also perform health checkups of the respiratory system and the circulatory system simultaneously. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a diagram showing a state of use of an embodiment of a wearable vital sign measuring device and a medical vital sign measuring system according to the present invention. [Figure 2]Figure 2 is an explanatory diagram (graph) showing the saturated oxygen concentration measured by a saturated oxygen concentration sensor of a wearable vital sign measurement device. The vertical axis shows the saturated oxygen concentration (unit: %), and the horizontal axis shows time (unit: seconds). (A) is an explanatory diagram (graph) showing the saturated oxygen concentration measured by placing the saturated oxygen concentration sensor on the tip of the index finger of the subject's left hand. (B) is an explanatory diagram (graph) showing the saturated oxygen concentration measured by placing the saturated oxygen concentration sensor on the subject's chest near the lungs. [Figure 3] 3 is a side view showing the wearable vital sign measuring device attached to a subject, taken along the line III-III in FIG. 1. FIG. [Figure 4] FIG. 4 is a block diagram showing the configuration of a wearable vital sign measuring device. [Figure 5] FIG. 5 is a schematic partial cross-sectional view showing a digital auscultation device of a wearable vital sign measuring apparatus. [Figure 6] FIG. 6 is a schematic partial cross-sectional view showing a saturated oxygen concentration sensor of a wearable vital sign measuring device. [Figure 7] FIG. 7 is a schematic partial cross-sectional view showing an electrocardiogram sensor of a wearable vital sign measuring device. [Figure 8] FIG. 8 is a block diagram showing the configuration of a data processing and storage device of a medical vital sign measurement system. [Figure 9] FIG. 9 is a flowchart showing the operation of the wearable vital sign measuring device. [Figure 10] FIG. 10 is an explanatory diagram showing a modified example of the digital auscultation device of the wearable vital sign measuring device, and is a side view of the wearable vital sign measuring device worn by a subject. [Figure 11] FIG. 11 is a block diagram showing the configuration of the digital auscultation device shown in FIG. 10 and a flowchart showing signal processing. [Figure 12] FIG. 12 is an explanatory diagram showing a state in which a fixing tape, which is a first modified example of the attachment part of the wearable vital sign measurement device, is used. [Figure 13] FIG. 13 is an explanatory diagram showing a state in which a fixing belt, which is a second modified example of the attachment part of the wearable vital sign measurement device, is used. DETAILED DESCRIPTION OF THE INVENTION

[0023] (Description of the configuration of the embodiment) A medical vital sign measurement system 1 according to an embodiment of the present invention will be described below. FIG. 1 is a diagram showing an example of the configuration of the medical vital sign measurement system 1. Note that each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, components, the arrangement and connection order of the components, the processing order in the flowcharts, and the like shown in the following embodiment are merely examples and are not intended to limit the present invention. Furthermore, each figure is not necessarily an exact representation.

[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] A wearable vital sign measurement device 2 (hereinafter referred to as the measurement device 2 as appropriate) is attached to the chest of the subject P and collects at least lung sounds (in the example of FIG. 1, lung sounds and heart sounds) as vital signs, while simultaneously measuring at least saturated oxygen concentration (in the example of FIG. 1, saturated oxygen concentration and heart rate) and at least electrocardiogram (in the example of FIG. 1, electrocardiogram and electromyogram), and transmits these to a data processing and storage device 3 in synchronization with the timing of the sound collection and measurement. 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, the saturated oxygen concentration and heart rate, the electrocardiogram and electromyogram stored in the data processing and storage device 3 are synchronized with the timing of the sound collection and measurement, and therefore represent the condition of the subject P at the same time. As will be described in detail later, by viewing the lung sounds and heart sounds, the saturated oxygen concentration and heart rate, the electrocardiogram and electromyogram, which indicate the condition of the subject P at the same time, a more accurate diagnosis of the subject P can be made.

[0026] In the example of Fig. 1, the measuring device 2 is attached to the chest of the subject P, but this is not limiting. It may be attached to any location, such as the back, where lung sound collection, saturated oxygen concentration measurement, and light-shielding measurement can be performed simultaneously.

[0027] (Measurement of saturated oxygen concentration at locations other than fingertips) It is generally said that the fingertip is the most suitable place to measure saturated oxygen concentration. However, it has been revealed that similar saturated oxygen concentration results are obtained whether measuring on the chest or on the fingertip. When the saturated oxygen concentration was measured at almost the same time on the index fingertip and chest of the same subject P, the same saturated oxygen concentration value was obtained. Figure 2(A) is a graph showing the saturated oxygen concentration measured on the index fingertip of subject P's left hand. Figure 2(B) is a graph showing the saturated oxygen concentration values ​​measured by measuring device 2 placed on subject P's chest near the lungs. The vertical axis of Figure 2 represents saturated oxygen concentration (unit: %), and the horizontal axis represents time (unit: seconds).

[0028] 2(A) and 2(B), the saturated oxygen concentration is approximately 98% in both cases. Note that in the graph of FIG. 2(B), during time A, from the drop at approximately 2.30 seconds to the rise at approximately 3.40 seconds, the measuring device 2 is temporarily removed from the chest or back of the subject P, and the saturated oxygen concentration is 0%.

[0029] In this way, the saturated oxygen concentration can be measured in the chest, so lung sounds can also be measured, and the lung sounds, saturated oxygen concentration, and electrocardiogram can be measured in synchronization.

[0030] (The significance of measuring lung sounds, saturated oxygen levels, and electrocardiograms in synchronization) It takes about 2-3 seconds for red blood cells to reach the left atrium after passing through the alveoli and being oxygenated in the pulmonary circulation, and depending on the location, it can take more than 10 seconds for them to reach the peripheral circulation from the left ventricle. Furthermore, when measuring saturated oxygen concentration, a moving average is taken of data obtained over a certain period of time, which adds an additional time to the moving average, resulting in a measurement delay. In other words, when measuring saturated oxygen concentration at the fingertips of subject P's hand or at the earlobe of subject P, there is a certain time lag between the lung sounds picked up from the chest and the saturated oxygen concentration measured at the fingertips, etc.

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

[0032] This section explains the significance of measuring lung sounds and saturated oxygen concentration with little time lag, i.e., synchronized lung sounds and saturated oxygen concentration.Synchronized lung sounds and saturated oxygen concentration enable the following diagnoses:

[0033] If lung sounds appear abnormal but the saturated oxygen concentration is not decreased, an asthma attack may be suspected. The airway branches from the trachea through more than 20 branches to the alveolar region where gas exchange occurs. The areas outside of the alveolar region where gas exchange occurs are called ducts. Abnormal lung sounds due to asthma can also be caused by duct obstruction. However, even if the ducts are obstructed, gas exchange in the alveolar region will maintain a level that allows the saturated oxygen concentration to remain normal, and if hemodynamics is stable, the saturated oxygen concentration will remain normal. Therefore, even if the saturated oxygen concentration is not decreased, abnormal lung sounds can be considered to indicate duct obstruction and the possibility of an asthma attack.

[0034] Conversely, when lung sounds appear normal but the saturated oxygen concentration is low, pulmonary hypertension may be a possible cause. Pulmonary hypertension is characterized by structural remodeling of the pulmonary arteries (e.g., narrowing of the vascular lumen), which is an impairment of the microvascular bed within the lungs. Gas exchange in the lungs requires the normal functioning of all units—alveoli, pulmonary interstitium, and intrapulmonary microvasculature—and any impairment of these vascular systems impairs gas exchange. Pulmonary hypertension, including pulmonary thromboembolism, is characterized by normal lung sounds but low saturated oxygen concentration. Therefore, even when lung sounds appear normal, a low saturated oxygen concentration can be suspected or diagnosed as pulmonary hypertension. Similarly, when alveolar congestion occurs due to heart failure, if the condition is mild, lung sounds will be normal but the saturated oxygen concentration will be low. Furthermore, renal failure also results in normal lung sounds but low saturated oxygen concentration.

[0035] If both the lung sounds and saturated oxygen concentration are normal, it can be predicted and determined that the respiratory system of subject P is normal. Also, if there are abnormalities in both the lung sounds and saturated oxygen concentration, it can be predicted and determined that there is an abnormality in the respiratory system of subject P. For example, in the case of a severe asthma attack, abnormalities in the saturated oxygen concentration, i.e., a decrease in the saturated oxygen concentration, are observed in addition to abnormal lung sounds.

[0036] Synchronizing lung sounds and saturated oxygen levels allows for a wider range of possible diagnosis of the subject's condition. Furthermore, by synchronizing lung sounds and saturated oxygen levels, the symptoms can be accurately and precisely identified.

[0037] In addition, by synchronously measuring lung sounds, saturated oxygen levels, and electrocardiograms (hereinafter referred to as "various items"), it becomes possible to accurately and precisely predict and diagnose the symptoms of sleep apnea syndrome, and it is also possible to simultaneously perform health checkups of the respiratory system and the circulatory system. Furthermore, because this measuring device 2 is worn on the subject P's chest or back, it can continuously measure various data from the start of exercise until immediately after exercise. Compared to conventional stationary measuring devices, it can comprehensively grasp signs of changes in the electrocardiogram, including respiratory sounds, saturated oxygen concentration, and heart rate. Conventional stationary measuring devices make comprehensive diagnostic assessments based on various measurement data obtained in a resting state with a measurement time lag, which can lead to individuals suffering from respiratory or cardiac disorders being deemed healthy. On the other hand, because this measuring device 2 can continuously measure various data from the start of exercise until immediately after exercise, it can accurately grasp signs of respiratory or cardiac disorders that are particularly likely to appear during physical exercise, but are not detected by resting data measurements using conventional stationary measuring devices with a time lag. This allows for early detection and diagnosis of individuals suffering from respiratory or cardiac disorders, or so-called hidden patients, among those deemed healthy by conventional stationary measuring devices. In this way, the measuring device 2 can contribute not only to the early detection and diagnosis of illness, but also to the early detection and diagnosis of potential illnesses. Here, we will explain the mechanism by which symptoms of respiratory disease can be accurately identified by attaching this measuring device 2 to the chest or back of subject P and continuously measuring various data from the start of exercise until immediately after exercise. In people with respiratory disease, even if the saturation (SpO2) value is the same, there is a biological regulation that increases the pulse rate to maintain a high value. Therefore, by comparing the saturation (SpO2) value during exercise and the way the saturation (SpO2) value returns after exercise, it is possible to distinguish between groups with and without respiratory disease, enabling early detection of respiratory disease or the discovery of potential respiratory disease.

[0038] (Explanation of Measuring Device 2) The measuring device 2 constituting the medical vital sign measurement system 1 will now be described. As shown in FIG. 1, the measuring device 2 has a case 20. As shown in FIG. 3, the case 20 has a facing portion (facing 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 this example, the facing portion 20A of the case 20 is attached to the chest or back of the subject P near the lungs or heart via an attachment portion 200. In this example, the attachment portion 200 is an adhesive (hereinafter also referred to as adhesive 200) that directly and detachably attaches the facing portion 20A of the case 20 to the skin of the subject P's chest. The adhesive 200 is a gel-like adhesive material that is applied to the required parts of the subject P's chest or back (the parts near the lungs or heart) to attach the facing portion 20A of the case 20 to the skin of the subject P.

[0039] In this example, the case 20 is made of any material, for example, synthetic resin. The case 20 can be made lightweight, thin, and small so as not to be a burden on the subject P when worn by the subject P.

[0040] 4 is a block diagram showing the internal configuration of the measuring device 2. Inside a case 20, the measuring device 2 is provided with a digital auscultation device 21 as a first collecting unit, a saturated oxygen concentration sensor 22 as a second collecting unit, an electrocardiogram sensor 23 as a third collecting unit, a control unit 24, and a communication unit 25. A battery (not shown) is provided inside the case 20, and each unit is powered by the battery.

[0041] (Description of Digital Stethoscope Device 21) Returning to FIG. 4, the digital auscultation device 21 collects heart sounds as well as lung sounds, converts them into electrical signals, and supplies them to the control unit 24.

[0042] As shown in Fig. 5, the digital auscultation 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 facing part 20A of the case 20 of the measuring device 2 is attached to the subject P via the attachment part 200.

[0043] Sound collection unit 211 is provided in a position facing the body side of subject P when facing part 20A of case 20 is attached to the chest or back of subject P via attachment part 200. Sound collection unit 211 collects sounds (in this example, lung sounds and heart sounds) generated inside the body of subject P. Sound collection unit 211 has a configuration similar to that of the chest piece of a stethoscope, and eliminates noise while collecting necessary lung sounds and heart sounds (auscultatory sounds).

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

[0045] (Explanation of saturated oxygen concentration sensor 22) 4, the saturated oxygen concentration sensor 22 measures the saturated oxygen concentration (transcutaneous arterial oxygen saturation, saturation (SpO2)) and the heart rate, and converts them into electrical signals. The converted electrical signals are supplied to the control unit 24.

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

[0047] The attachment part 221 has a concave shape (concave spherical shape, dome shape) that is recessed toward the subject P. The edge of the opening part of the attachment part 221 comes into 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 opposite the opening part, in the recessed part (bottom part) of the recess.

[0048] 6, the light-emitting unit 222 emits red light L1 and infrared light L2 toward the subject P. Similarly, as shown by the solid arrow in Fig. 6, the light-receiving unit 223 receives red light L10 and infrared light L20 emitted from the light-emitting unit 222 and reflected from the subject P, and converts the saturated oxygen concentration in the arterial blood and the heart rate into electrical signals based on the red light L10 and infrared light L20.

[0049] Light-emitting unit 222 and light-receiving unit 223 are attached to a portion of attachment unit 221 facing subject P, i.e., a portion opposite the opening, in a recessed portion (bottom portion) of the recess, and therefore can block external light L3 (see dashed arrow in FIG. 6), particularly from light-receiving unit 223. In other words, even if external light L3 passes through the gap between subject P's skin and case 20 and enters the recessed space of attachment unit 221 via the opening portion of attachment unit 221, it can be prevented from entering light-receiving unit 223.

[0050] (Explanation of electrocardiogram sensor 23) Returning to FIG. 4, in this example, the electrocardiogram sensor 23 is a multi-function sensor. The electrocardiogram sensor 23 of the multi-function sensor measures electromyograms as well as electrocardiograms and converts them into electrical signals. That is, the electromyogram sensor of the multi-function sensor measures, as a vital sign, the action potential (myogenic potential) generated when the muscle cells (muscle fibers) of the subject P contract. The converted electrical signal is supplied to the control unit 24. The electrocardiogram sensor 23 in this example uses one channel that can obtain a representative value. Note that the electrocardiogram sensor 23 may use ten channels in addition to the one channel in this example.

[0051] As shown in Fig. 7, the electrocardiogram sensor 23 has an attachment part 231 and a plurality of electrodes 232 (three in this example) attached to the attachment part 231. Fig. 7 is a diagram showing the positional relationship of the attachment part 231, the three electrodes 232, etc. with respect to the subject P when the facing part 20A of the case 20 of the measurement device 2 is attached to the subject P via the attachment part 200. The attachment part 231 and the three electrodes 232 are provided in 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.

[0052] The attachment portion 231 has a recessed shape that is recessed toward the subject P. The edge of the opening of the attachment portion 231 comes into close contact with the skin of the subject P. The three electrodes 232 are attached to the portion of the attachment portion 231 that faces the subject P, i.e., the portion opposite the opening, in the recessed portion (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 cardiac activity and contractile activity of the subject P's muscle cells, converting them into electrical signals. These electrical signals are output to the control unit 24.

[0054] (Explanation of control unit 24) 4, the control unit 24 is composed of other elements including hardware such as a CPU (Central Processing Unit) and a storage unit (e.g., Read Only Memory (ROM), Random Access Memory (RAM), non-volatile memory, etc.). The control unit 24 executes a control application program (not shown) stored in the storage unit to control the entire measuring device 2 and also functions as a timestamp unit 241, an audio processing unit 242, a saturated oxygen concentration processing unit 243, and a synchronization unit 245 to perform 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 audio processing unit 242 converts the electrical signals of lung sounds and heart sounds input from the digital auscultation device 21 into digital data, in this example, MP3 data, adds a timestamp issued by the timestamp unit 241, and supplies it to the synchronization unit 245.

[0057] The saturated oxygen concentration processing unit 243 performs moving average processing on the saturated oxygen concentration and heart rate values ​​input from the saturated oxygen concentration sensor 22, and adds the timestamp issued by the timestamp unit 241 to the text data indicating the resulting saturated oxygen concentration and heart rate values, and supplies the text data to the synchronization unit 245.

[0058] The electrocardiogram processing unit 244 performs moving average processing on the values ​​of cardiac activity and muscle cell contraction activity input from the electrocardiogram sensor 23, and adds the timestamp issued by the timestamp unit 241 to the text data indicating the resulting values ​​of cardiac activity and muscle cell contraction activity, and supplies it to the synchronization unit 245.

[0059] The synchronization unit 245 temporally synchronizes the lung sound and heart sound data (MP3 data) output from the audio processing unit 242, the saturated oxygen concentration and heart rate data (text data) output from the saturated oxygen concentration processing unit 243, and the cardiac activity and muscle cell contraction activity data (text data) output from the electrocardiogram processing unit 244 based on the timestamps assigned to each data, and outputs the synchronized MP3 data and text data to the data processing and storage device 3 via the communication unit 25. Hereinafter, the synchronized MP3 data and text data will be referred to as synchronized data, as appropriate.

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

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

[0062] (Description of Data Processing Storage Device 3) The data processing storage device 3 will now be described. The data processing storage device 3 is a smart device (information device, terminal device, external medium, external media). As shown in FIG. 8, the data processing 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 within a case 30. In this example, the data processing storage device 3 is a handheld type, and an operator (not shown), such as a doctor, can hold it in one hand and operate the operation unit 35, or the operator can hold it in one hand and operate the operation unit 35 with the other hand. The data processing storage device 3 may also be a tablet type or a personal computer type.

[0063] In this example, the case 30 is made of any material, for example, synthetic resin. The case 30 can be made lightweight, thin, and small so as not to be a burden to the operator when using it. The case 30 has a hollow shape, and houses a communication unit 31, a control unit 32, a storage unit 33, an output unit 34, and an operation unit 35 inside.

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

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

[0066] The processing unit 321 performs predetermined processing on the synchronization data received by the communication unit 31 and stores the data 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 frequency intensity extraction processing on the MP3 data of lung sounds and heart sounds.

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

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

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

[0070] The operation unit 35 performs operations to start, pause, and end the medical vital sign measurement system 1, and to start, pause, and end the output unit 34. Note that the measurement device 2 may be provided with an operation unit that performs some of the operations performed by the operation unit 35 of the data processing storage device 3, for example, the operations to start, pause, and end the measurement device 2.

[0071] (Operation of measuring device 2) The operation of the medical vital signs measurement system 1 will be described with reference to the flowchart of FIG.

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

[0073] In step S2, the digital auscultation device 21 starts a process of collecting lung sounds and heart sounds emitted from the chest of the subject P and outputting them as electrical signals. Also, the saturated oxygen concentration sensor 22 starts a process of measuring the saturated 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 a process of collecting and measuring the cardiac activity of the subject P and the contractile activity of the subject P's muscle cells and outputting them as electrical signals.

[0074] In step S3, the audio processing unit 242 of the control unit 24 converts the electrical signals of the lung sounds and heart sounds output from the digital auscultation device 21 into digital data (MP3 data), adds a timestamp issued by the timestamp unit 241 to the digital data, and starts a process of outputting the digital data to the synchronization unit 245. The saturated oxygen concentration processing unit 243 converts the electrical signals of the saturated oxygen concentration and heartbeat output from the saturated oxygen concentration sensor 22 into digital data, adds a timestamp issued by the timestamp unit 241 to the digital data, and starts a process of outputting the digital data to the synchronization unit 245. The electrocardiogram processing unit 244 converts the electrical signals of the cardiac activity and muscle cell contraction activity output from the electrocardiogram sensor 23 into digital data, adds a timestamp issued by the timestamp unit 241 to the digital data, and starts a process of outputting the digital data 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 saturated oxygen concentration and heart rate output from the saturated oxygen concentration processing unit 243, and the text data indicating the cardiac activity and muscle cell contraction activity output from the electrocardiogram processing unit 244 based on the timestamps assigned to each data, and begins the process of outputting them to the data processing storage device 3 via the communication unit 25.

[0076] In addition, the data processing storage device 3 is turned on before the above-mentioned 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 process is executed until the power of the measuring device 2 is turned off, for example.

[0078] (Description of Modifications of Digital Stethoscope Device 210) Fig. 10 is an explanatory diagram showing a modified example of the digital auscultation device 210 of the wearable vital sign measuring device. Fig. 11 is a flowchart showing signal processing by the digital auscultation device 210 shown in Fig. 10. In Fig. 10, the same reference numerals as in Fig. 3 indicate the same components.

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

[0080] 10 has a sound collection unit (not shown), a microphone 213 for collecting lung sounds and heart sounds, a microphone 214 for collecting external environmental sounds, and a signal processing unit 215. The sound collection unit and the microphone 213 for collecting lung sounds and heart sounds are provided with the opposing part 20A of the case 20 of the measuring device 2 facing the wearing part 200. The microphone 214 for collecting external environmental sounds is provided with the opposing part 20A of the case 20 of the measuring device 2 facing the opposite side from the wearing part 200. The signal processing unit 215 is provided at an arbitrary position on the case 20 of the measuring device 2.

[0081] Signal processing by the digital auscultation device 210 will be described below with reference to the flowchart shown in Fig. 11. In step S2 of the flowchart shown in Fig. 9, the digital auscultation device 210 performs the following signal processing, which is the same as the signal processing performed by the digital auscultation device 21.

[0082] When the power 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 collects external environmental sounds at the same time.

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

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

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

[0086] In step S25, the signal processing unit 215 converts only the lung sounds and heart sounds into electrical signals and supplies them to the control unit 24. This completes the signal processing by the digital auscultation device 210.

[0087] The digital auscultation device 210 may be provided with a changeover switch (not shown) so as to be able to switch between a mode in which external environmental sounds are muted and a mode in which external environmental sounds are not muted.

[0088] Furthermore, the digital auscultation device 210 collects lung sounds and heart sounds using the lung sound and heart sound collecting microphone 213, but it may also be configured to collect at least lung sounds using the lung sound collecting microphone.

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

[0090] (Other examples of attachment points) The attachment part 200 in the example of FIG. 1 is used to attach the measuring device 2 to the chest or back of the subject P using adhesive 200. The attachment part 200 to which the measuring device 2 is attached is not limited to this adhesive 200. For example, as shown in FIG. 10 , a fixing tape 201 can be used as the attachment 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 in contact with the skin of the subject P, thereby fixing the case 20 to the subject P.

[0091] 11, a fixing belt 202 can be used as the attachment part 202. This fixing belt 202 is attached to the case 20 of the measuring device 2, and is fastened tightly to the subject P with the opposing part of the case 20 in contact with the skin of the subject P, thereby fixing the case 20 to the subject P.

[0092] (Explanation of the extended functions of the measuring device 2) The following describes the extended functions of the measuring device 2 and the medical vital signs measuring system 1.

[0093] The electrocardiogram sensor 23 (electromyogram sensor of the multi-function sensor) of the measuring device 2 can take electromyograms, making it one of the diagnostic tools for sleep apnea syndrome (SAS), and the evaluation of daily activities can also be applied to the healthcare of elderly people. That is, since there is a correlation between cardiac dysfunction and muscle weakness, by measuring the electromyogram of the subject P, the daily activities of the subject P (elderly person) can be evaluated, which can be applied to the healthcare of the subject P (elderly person).

[0094] Furthermore, the electrocardiogram sensor 23 of the measuring device 2 can take an electrocardiogram, and if paroxysmal atrial fibrillation can be recorded, this can also be used to prevent cardiogenic embolism.

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

[0096] The measuring device 2 may be provided with an acceleration sensor, a gyro sensor, or the like. The acceleration sensor, gyro sensor, or the like measures the body movements of the subject P as a vital sign. By temporally synchronizing the body movements or respiratory rate of the subject P measured by the acceleration sensor, gyro sensor, or the like with the lung sounds and heart sounds of the subject P measured by the digital auscultation device 21 and the saturated oxygen concentration and heart rate of the subject P measured by the saturated oxygen concentration sensor 22, it is possible to evaluate the influence of body movements (exercise).

[0097] The myoelectric potential measured by an electromyographic sensor, the electrical signal of the heart measured by an electrocardiograph, the body temperature measured by a thermometer, and the body movement or respiratory rate measured by an acceleration sensor or gyro sensor can be output as digital data by displaying, printing, transmitting, etc.

[0098] (Explanation of the use of medical vital signs measurement system 1) The medical vital signs measurement system 1 can be used not only for the preventive healthcare described above, but also for telemedicine and home medical care and treatment.

[0099] The medical vital signs measurement system 1 can obtain digital data of the subject P's lung sounds, heart sounds, saturated oxygen concentration, heart rate, electrocardiogram, and electromyogram, which are synchronized in time, at a remote location at any time. This allows for accurate and precise prediction and diagnosis of airway diseases and interstitial diseases, which will continue to be important.

[0100] It is possible to analyze the correlation between respiratory sounds, heart sounds, electrocardiograms, electromyograms, and saturated oxygen concentrations. In other words, by combining multiple indicators and developing a system that can perform analysis using artificial intelligence in the future, it will be possible to detect early pathological conditions that have not been possible to distinguish until now. Furthermore, because the medical vital signs measurement system 1 can collect respiratory sounds, it can also calculate the respiratory rate from information on respiratory sounds collected separately from the acceleration sensor, gyro sensor, etc., as needed. The unit of respiratory rate can be selected arbitrarily, for example, the number of times per minute or the number of times per 30 seconds.

[0101] In daily life, it is possible to detect early pathological conditions and detect pathological changes (especially acute changes) in patients with respiratory diseases. In other words, while such detection was previously only possible after a patient visited a medical institution and began testing, the measuring device 2 and medical vital sign measuring system 1 make it possible to detect changes in situations involving a lot of body movement in daily life.

[0102] The oxygen saturation concentration that can be measured while the device is attached to the subject P is an advantage because it allows for nocturnal findings such as sleep apnea syndrome to be obtained.

[0103] Furthermore, electrocardiograms and electromyograms are important information when predicting and assessing symptoms of cardiovascular disease. Therefore, by simultaneously measuring electrocardiograms and electromyograms with blood oxygen (saturated oxygen concentration) and auscultatory sounds (lung sounds), symptoms of sleep apnea syndrome can be accurately and precisely predicted and assessed. Furthermore, health checkups of the respiratory system and cardiovascular system can be performed simultaneously.

[0104] (Explanation of examples other than the embodiment) The wearable vital sign measuring device of the present invention is not limited to the above-described embodiment. In the above embodiment, the vital sign detection unit includes three components: the digital auscultation device 21, the saturated oxygen concentration sensor 22, and the electrocardiogram sensor 23. However, in the present invention, at least two of the digital auscultation device 21, the saturated oxygen concentration sensor 22, and the electrocardiogram sensor 23 may be included.

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

[0106] Furthermore, 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 frequency intensity extraction processing on the MP3 data of lung sounds and heart sounds, but it can also be configured to 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 medical vital signs measuring system 1 according to this embodiment have the above-described configuration and functions, and the effects thereof will be described below.

[0109] (1) As described above, the measuring device 2 A measurement device 2 that can be worn on the chest or back of a subject P, a facing portion 20A that faces the chest or back of the subject P when the measurement device 2 is attached to the chest or back of the subject P; a digital auscultation device 21 provided on the facing portion 20A, which collects lung sounds of the subject P from the chest or back of the subject P that the facing portion 20A faces and outputs the collected sounds as an electrical signal; a saturated oxygen concentration sensor 22 provided on the facing portion 20A, which collects the saturated oxygen concentration of the subject P from the chest or back of the subject P that the facing portion 20A faces and outputs the collected oxygen concentration as an electrical signal; an electrocardiogram sensor 23 provided on the facing part 20A, which collects cardiac activity of the subject P from the chest or back of the subject P that the facing part 20A faces and outputs the activity as an electrical signal; Equipped with.

[0110] In this way, the measuring device 2 collects lung sounds and measures the saturated oxygen concentration and electrocardiogram from a single location, such as the chest or back, of the subject P, so it is possible to measure lung sounds, saturated oxygen concentration, and electrocardiogram with little time lag. As a result, it is possible to diagnose a wider range of possible conditions for the subject.

[0111] Furthermore, the measuring device 2 can simultaneously measure blood oxygen (saturated oxygen concentration), auscultatory sounds (lung sounds), and electrocardiograms, making it possible to accurately and precisely predict and diagnose symptoms of sleep apnea syndrome, and also to simultaneously perform health checkups of the respiratory system and circulatory system.

[0112] (2) The measuring device 2 can include a synchronization unit 245 that synchronizes the electrical signal from the digital auscultation device 21 with the electrical signal from the saturated oxygen concentration sensor 22 and outputs the synchronized signal. With this configuration, the measuring device 2 can synchronize the lung sounds and the saturated oxygen concentration with higher accuracy.

[0113] (3) In the measuring device 2, the digital auscultation device 21 can collect heart sounds in addition to lung sounds and output them as electrical signals. This configuration allows for more accurate prediction and diagnosis of symptoms of respiratory diseases compared to when only lung sounds are collected.

[0114] (4) In the measuring device 2, the digital auscultation device 210 can eliminate external environmental sounds and collect only lung and heart sounds, outputting them as electrical signals. This configuration can eliminate noise such as external environmental sounds, allowing symptoms of respiratory diseases to be accurately and precisely predicted and diagnosed.

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

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

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

[0118] By configuring the measuring device 2 in this manner, it is possible to block external light L3, particularly from the light receiving section 223, and therefore it is possible to measure the saturated oxygen concentration without being affected by external light L3.

[0119] (7) In the measuring device 2, the saturated oxygen concentration sensor 22 can collect and output the heart rate as an electrical signal in addition to the saturated oxygen concentration. By configuring in this way, the measuring device 2 can predict and diagnose symptoms of respiratory diseases more accurately and precisely than when only the saturated oxygen concentration is used.

[0120] (8) The measuring device 2 can collect and output electrical signals from the electrocardiogram sensor 23 not only of cardiac activity but also of muscle cell contraction activity. This configuration allows the measuring device 2 to predict and diagnose cardiovascular disease symptoms more accurately and precisely than when only electrocardiograms are used.

[0121] (9) The measuring device 2 can be configured so that the case 20 is attached to the subject P's chest or back near the lungs or near the lungs or heart via the adhesive 200 as the attachment part 200. By configuring the measuring device 2 in this way, it is possible to reduce the delay in measuring the saturated oxygen concentration and heart rate by the saturated oxygen concentration sensor 22 compared to measuring lung sounds and heart sounds by the digital auscultation device 21, and to accurately and precisely predict and diagnose symptoms of respiratory diseases.

[0122] (10) The measuring device 2 can also be configured so that the case 20 is attached to the chest or back of the subject P via the adhesive 200 as the attachment part 200. By configuring the measuring device 2 in this manner, the measuring device 2 can collect the saturated oxygen concentration without coming off during daily activities or light exercise, unlike saturated oxygen concentration meters that are attached to the subject P's fingertips, earlobes, or in some cases the tips of the subject P's toes. As described above, the measuring device 2 according to this embodiment can collect lung sounds and saturated oxygen concentrations during daily activities or light exercise, whereas previously these were mainly collected while the subject P was at rest.

[0123] (11) The medical vital signs measurement system 1 includes the measurement device 2 described above in (1) to (9), and therefore can achieve the same effects as those of the measurement device 2 described above in (1) to (10). [Explanation of symbols]

[0124] 1. Medical vital signs measurement system 2. Wearable vital signs measuring device (measuring device) 20 cases 20A opposing part 200 Adhesive (attachment part) 201 Fixing tape (attachment part) 202 Fixed belt (attachment part) 21 Digital auscultation device (collection unit / first collection unit) 211 Sound collection section 212 microphones 210 Digital auscultation device (collection unit / first collection unit) 213 Microphone for collecting lung and heart sounds 214 Microphone for collecting external environmental sounds 215 Signal Processing Unit 22 Saturated oxygen concentration sensor (collection unit / second collection unit) 221 Mounting part 222 Light-emitting part 223 Light receiving part 23 Electrocardiogram Sensor 231 Mounting part 232 Electrode 24 Control Unit 241 timestamp section 242 Audio Processing Unit 243 Saturated oxygen concentration processing unit 244 Electrocardiogram Processing Unit 245 Synchronization Unit 25 Communications Department 3. Data processing storage device 30 cases 31 Communications Department 32 Control section 321 Processing Section 33 Preservation Department 34 Output section 35 Control section A Time L1 Red light (red light emitted from the light-emitting unit 222) L2 infrared light (infrared light emitted from the light-emitting unit 222) L10 Red light (red light reflected from subject P) L20 Infrared light (infrared light reflected from subject P) L3 Light from outside P Target Audience

Claims

1. A wearable vital sign measurement device that can be worn on the chest or back of a subject, a case in which the wearable vital sign measurement device is worn on the subject's chest or back; a vital sign detection unit that collects vital signs of the subject from the chest or back of the subject and outputs the vital signs as electrical signals; Equipped with The vital sign detection unit a digital auscultation device that collects lung sounds of the subject and outputs them as electrical signals; a saturated oxygen concentration sensor that collects the saturated oxygen concentration of the subject and outputs it as an electrical signal; an electrocardiogram sensor that collects cardiac activity of the subject and outputs it as an electrical signal; At least two of the following are required: The digital auscultation device comprises: a first facing portion that is a predetermined area of ​​the case including an opening portion; a sound collecting unit configured to collect sounds generated inside the subject's body through the opening of the first opposing part; a microphone attached to the sound collecting unit and converting the sound collected by the sound collecting unit into an electrical signal; and collecting lung sounds of the subject while a peripheral portion of the opening of the first opposing portion is in close contact with the skin of the subject; The saturated oxygen concentration sensor a second facing portion of the case, the second facing portion being a predetermined area including a portion where a predetermined part of the case is recessed with respect to the subject; a light emitting unit and a light receiving unit attached to a second attachment portion that is the recessed portion of the second opposing portion; and collecting a saturated oxygen concentration of the subject while the second opposing portion is in close contact with the skin of the subject; The electrocardiogram sensor a third facing portion of the case in a predetermined area including a portion where a predetermined part of the case is recessed with respect to the subject; a plurality of electrodes attached to a third attachment portion, which is the recessed portion of the third opposing portion; and collecting cardiac activity of the subject with the third opposing portion in close contact with the skin of the subject and the plurality of electrodes attached to the skin of the subject via an adhesive; A wearable vital sign measuring device characterized by the above.

2. a synchronization unit that outputs at least two of the electrical signals from the digital auscultation device, the saturated oxygen concentration sensor, and the electrocardiogram sensor in time synchronization; The wearable vital sign measuring device according to claim 1 .

3. the digital auscultation device picks up heart sounds in addition to the lung sounds; The wearable vital sign measuring device according to claim 1 .

4. The digital auscultation device comprises: a microphone for collecting lung sounds, said microphone collecting at least lung sounds and external environmental sounds; an external environmental sound collecting microphone that collects only external environmental sounds; a signal processing unit; and The signal processing unit signal processing for adjusting the level of the external environmental sound collected by the external environmental sound collecting microphone to the level of at least the lung sounds 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 sounds and the external environmental sounds collected by the lung sound collecting microphone, thereby obtaining at least the lung sounds alone; signal processing for converting at least only lung sounds into electrical signals and outputting the electrical signals; To do The wearable vital sign measuring device according to claim 1 .

5. the light-emitting unit emits red light and infrared light toward the subject, the light receiving unit receives the red light and the infrared light emitted from the light emitting unit and reflected from the subject, and outputs the saturated 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 .

6. The vital signs collected by the saturated oxygen concentration sensor and output as the electrical signal include the saturated oxygen concentration and the heart rate. The wearable vital sign measuring device according to claim 1 .

7. The electrocardiogram sensor is a multi-function sensor, and the vital signs collected by the electrocardiogram sensor of the multi-function sensor and output as the electrical signals are not only the cardiac activity of the subject but also the contractile activity of muscle cells of the subject. The wearable vital sign measuring device according to claim 1 .

8. At least two of the first opposing portion, the second opposing portion, and the third opposing portion have an attachment portion for attaching the at least two opposing portions to the subject's chest or back near the subject's lungs or near the subject's lungs or heart. The wearable vital sign measuring device according to claim 1 .

9. The mounting portion is an adhesive that adheres the at least two opposing portions to the subject's skin; or A fixing tape that adheres to the at least two opposing portions and the subject's skin while the at least two opposing portions are placed against the subject's skin, thereby fixing the at least two opposing portions to the subject; or a fixing belt that is attached to the at least two opposing parts and that is fastened to the subject with the at least two opposing parts in contact with the subject's skin to fix the at least two opposing parts to the subject; At least one of 9. The wearable vital signs measuring device according to claim 8.

10. The wearable vital sign measurement device according to any one of claims 1 to 9; a data processing storage device; Equipped with the wearable vital sign measurement device has a first communication unit that transmits at least two of the electrical signals from the digital auscultation device, the electrical signal from the saturated oxygen concentration sensor, and the electrical signal from the electrocardiogram sensor as synchronous digital data; The data processing storage device is a second communication unit that forms a communication line together with the first communication unit and receives and outputs the synchronous digital data transmitted from the first communication unit; a processing unit that processes and outputs digital sound data from the synchronized digital data output from the second 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; Equipped with A medical vital signs measurement system characterized by:

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