Waveform acquisition device, display device

Abstract

The object is to provide a stethoscope that can improve user convenience. [Solution] The waveform acquisition device 1 includes an acquisition unit 10, a control unit 20, and a display unit 30. The acquisition unit 10 acquires a first waveform including the waveform of a sound originating from a target body part. The control unit 20 analyzes the first waveform and a second waveform, which is a reference waveform, and generates an image 31. The display unit 30 displays the image 31 generated by the control unit 20.

Description

[Technical Field]

[0001] The present invention relates to a waveform acquisition device and a display device. [Background technology]

[0002] As a conventional stethoscope, for example, a technology capable of visualizing breathing sounds has been disclosed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-135611 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there has been a demand for improving the user convenience of the conventional stethoscopes described above.

[0005] An object of the present disclosure is to provide a stethoscope that can improve user convenience. [Means for solving the problem]

[0006] A waveform acquisition device according to one embodiment of the present disclosure includes an acquisition unit that acquires a first waveform including a waveform of a sound originating from a target part of a living body, a memory unit that stores a second waveform that is a reference waveform related to the target part, and a display unit that displays the first waveform and the second waveform.

[0007] In addition, a display device according to one embodiment of the present disclosure displays a first waveform including a waveform of a sound originating from a target part of a living body acquired by an acquisition unit, and a second waveform which is a reference waveform related to the target part stored in a memory unit. [Effects of the Invention]

[0008] According to one embodiment of the present disclosure, a stethoscope capable of improving user convenience is provided. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a block diagram showing an example of a schematic configuration of a waveform acquisition device according to an embodiment of the present invention. [Figure 2] 4 is a flowchart illustrating an example of a processing unit of the waveform acquisition device in the present embodiment. [Figure 3] 3A to 3C are diagrams illustrating examples of images displayed on a display unit in the present embodiment. [Figure 4] 3A to 3C are diagrams illustrating examples of images displayed on a display unit in the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings, but the present disclosure is not limited thereto. For convenience of illustration, the dimensional ratios of the drawings do not necessarily correspond to those in the description. In the following drawings, the same components are designated by the same reference numerals.

[0011] A waveform acquisition device 1 according to one embodiment of the present invention will be described with reference to Fig. 1. The waveform acquisition device 1 acquires acquired data (hereinafter referred to as a first waveform) including a waveform of a sound originating from a target part. The waveform acquisition device 1 of this embodiment functions as a waveform acquisition device that can acquire waveforms effectively. The target site may be, for example, at least one of the respiratory system including the lungs, the circulatory system including the heart, the digestive system including the intestines, and the reproductive system. The waveform acquisition device 1 of this embodiment includes an acquisition unit 10, a control unit 20, and a display unit 30.

[0012] In the waveform acquisition device 1, the control unit 20 analyzes the first waveform acquired by the acquisition unit 10 and displays it on the display unit 30. The first waveform may be electronic data including a sound (hereinafter referred to as biological sound) originating from a target part of a living body. Furthermore, information (hereinafter referred to as first information) obtained from the first waveform displayed on the display unit 30 may be input. Details of the first information will be described later. The acquisition unit 10, control unit 20, and display unit 30 may be connected via a communication cable, a wireless network, etc., to transmit and receive information.

[0013] In this embodiment, the living body is assumed to be a human, but the target living body may be any living body, including animals such as dogs, cats, and horses. In this embodiment, the user may include any person who uses information about living body sounds, such as medical professionals, medical students, and non-medical related parties. Medical professionals may include, for example, doctors, dentists, pharmacists, public health nurses, midwives, nurses, licensed practical nurses, dental hygienists, radiological technologists, dental technicians, clinical laboratory technicians, medical laboratory technicians, physical therapists, occupational therapists, orthoptists, clinical engineers, prosthetists, emergency medical technicians, speech-language-hearing therapists, and registered dietitians.

[0014] 1, the lines connecting the functional blocks indicate the flow of control signals or information to be communicated. The communication between the functional blocks may be wired or wireless.

[0015] The acquisition unit 10 acquires the first waveform. The acquisition unit 10 may be equipped with a sensor capable of acquiring vibrations generated by body sounds by contacting the body with the living body. For example, an angular velocity sensor, an acceleration sensor, a gyro sensor, or a strain sensor may be used. The sensor may detect, for example, the voltage of the vibrations generated by the body sounds. The sensor may detect, for example, the frequency of the vibrations generated by the body sounds. The acquisition unit 10 includes one sensor, but is not limited to this. The acquisition unit 10 may include, for example, multiple sensors. The acquisition unit 10 may include, for example, multiple sensors capable of detecting different frequencies, or multiple sensors capable of detecting the same frequency. The acquisition unit 10 may include, for example, multiple sensors of different types. The acquisition unit 10 is not limited to a configuration for acquiring vibrations. For example, the acquisition unit 10 may collect body sounds using a microphone or the like and convert the acquired sounds into electronic data. Furthermore, the acquisition unit 10 may input information related to body sounds acquired by a device other than the waveform acquisition device 1. The acquisition section 10 may, for example, read an image on which information related to body sounds is described.

[0016] The acquisition unit 10 may be brought into contact with, for example, the chest, back, neck, abdomen, etc. of a living body. The acquisition unit 10 may be configured to receive vibrations generated by biological sounds through a membrane and detect the vibrations generated in the membrane. For example, by bringing the acquisition unit 10 into contact with the chest, the acquisition unit 10 can detect heart sounds and / or The acquisition unit 10 may detect vibrations due to bowel sounds and / or fetal heart sounds by, for example, contacting the back. The acquisition unit 10 may detect vibrations due to breathing sounds by, for example, contacting the neck. The acquisition unit 10 may detect vibrations due to bowel sounds and / or fetal heart sounds by, for example, contacting the abdomen. The acquisition unit 10 transmits a detection signal corresponding to the detected vibrations. The membrane receives vibrations generated by biological sounds. The membrane deforms in response to the received vibrations. The acquisition unit 10 may be an electronic stethoscope that acquires biological sounds. The electronic stethoscope may be, for example, a stethoscope that contacts a living body to acquire biological sounds, converts the acquired biological sounds into digital data, and outputs the digital data. The acquisition unit 10 may transmit the acquired first waveform to the control unit 20. The acquisition unit 10 may convert the first waveform into sound and transmit the first sound to the control unit 20.

[0017] The control unit 20 includes a discrimination unit 21, an analysis unit 22, a storage unit 23, and an image processing unit 24. The control unit 20 may receive the first waveform from the acquisition unit 10. The period of the waveform may be analyzed. The control unit 20 may extract a predetermined period of the analyzed first waveform. The control unit 20 may transmit the image 31 generated by the image processing unit 24 to the display unit 30. The control unit 20 may associate the first waveform with the first information and store them. The discrimination unit 21, analysis unit 22, storage unit 23, and image processing unit 24 may be configured by software recorded on a recording medium (not shown).

[0018] The control unit 20 may manually or automatically start and / or stop the acquisition of the first waveform when a predetermined condition is met while an application for acquiring the first waveform is running. The predetermined condition for starting and / or stopping the acquisition of the first waveform will be described. The control unit 20 may start the acquisition of the first waveform when a first condition is met. The first condition is a condition for starting the acquisition of the first waveform. Starting the acquisition of the first waveform may include, for example, temporarily suspending the acquisition of the first waveform and then resuming it.

[0019] The control unit 20 may start acquiring the first waveform when, for example, a first condition is satisfied. The first condition may be, for example, that an application for acquiring the first waveform is started and a sensor provided in the acquisition unit 10 detects vibration. The first condition may be, for example, that an application for acquiring the first waveform is started and the control unit 20 determines that the acquisition unit 10 is in contact with a living body.

[0020] The first condition may be, for example, that a predetermined time (e.g., several seconds) has elapsed since vibration was detected by a sensor provided in the acquisition unit 10. For example, immediately after vibration begins to be detected by the sensor provided in the acquisition unit 10, the first waveform may not be stable due to, for example, the user adjusting the position at which the acquisition unit 10 is touched. Therefore, the control unit 20 starts acquiring the first waveform when a predetermined time has elapsed since vibration detection began, thereby making it easier to acquire a stable first waveform.

[0021] The first condition may be, for example, that the state in which vibration is detected by a sensor provided in the acquisition unit 10 continues for a predetermined time (e.g., several seconds). For example, immediately after vibration begins to be detected, the first waveform may not be stable because the user adjusts the position at which the acquisition unit 10 is in contact with the living body. If the user fixes the position at which the acquisition unit 10 is in contact with the living body, the acquired first waveform becomes more stable. The control unit 20 starts acquiring the first waveform when the state in which vibration is detected continues for a predetermined time, making it easier to acquire a stable first waveform. The first condition is not limited to the above example and may include other conditions.

[0022] For example, the control unit 20 may terminate acquisition of the first waveform when a second condition is satisfied. The second condition may be, for example, that it is determined, based on a sensor provided in the acquisition unit 10, that acquisition of the first waveform is impossible. The second condition may be, for example, that it is determined, based on a sensor provided in the acquisition unit 10, that acquisition of the first waveform cannot be performed for a predetermined time or longer. The second condition may be, for example, that the control unit 20 determines that the acquisition unit 10 is not in contact with a living body. The second condition may be, for example, that a predetermined time (e.g., several seconds) has elapsed since the acquisition unit 10 started acquiring the first waveform. The second condition may be, for example, that the state in which the acquisition unit 10 started acquiring the first waveform has continued for a predetermined time (e.g., several seconds). The second condition is not limited to the above example and may include other conditions.

[0023] The discrimination section 21 may discriminate the type of the first waveform. The discrimination section 21 may analyze the characteristics of the first waveform (hereinafter referred to as characteristic information of the first waveform) in the analysis section 22 described below, and discriminate the type of the first waveform from the characteristic information of the first waveform.

[0024] Since the shape of the waveform differs depending on the type of body sound, the discrimination unit 21 may, for example, determine the shape of the waveform. The discrimination unit 21 may discriminate the type of waveform based on the acquired waveform. The discrimination unit 21 may discriminate the type of waveform based on biological sounds, such as respiratory system sounds including breath sounds, circulatory system sounds including heart sounds, digestive system sounds including bowel sounds, and fetal heart sounds. The type of waveform may be selected by, for example, a user's operation. When the discrimination unit 21 can discriminate the type of waveform, the discrimination unit 21 may transmit the type of waveform to, for example, the control unit 20. When the discrimination unit 21 cannot discriminate the type of waveform, the display unit 30 may, for example, display information prompting the user to acquire the first waveform again. When the discrimination unit 21 cannot discriminate the type of waveform, the display unit 30 may, for example, display information prompting the user to select the type by a user's operation.

[0025] In the following description, a case where the biological sound is a heart sound will be described as an example. However, the waveform acquisition device 1 of the present invention is not limited to the above example and may acquire other biological sounds. The other biological sounds may be, for example, respiratory system sounds, circulatory system sounds, digestive system sounds, fetal heart sounds, etc.

[0026] For example, even when the discrimination unit 21 determines that the first waveform includes a waveform of a heart sound, the positional relationship between the acquisition unit 10 and the heart, which is the target site, varies depending on the region where the acquisition unit 10 is in contact with the living body. The shape of the acquired waveform changes with the change in the positional relationship between the acquisition unit 10 and the target site. Therefore, the region where the acquisition unit 10 is in contact may be determined from the shape of the first waveform. The region where the acquisition unit 10 is in contact may be, for example, the aortic valve region at the right edge of the second intercostal space at the sternum, the pulmonary valve region at the left edge of the second intercostal space at the sternum, the Erb region at the left edge of the third intercostal space at the sternum, the tricuspid valve region at the left edge of the fourth intercostal space at the sternum, and the mitral valve region at the apex of the heart. The region where the acquisition unit 10 is in contact may be selected by, for example, a user's operation.

[0027] The analysis section 22 may analyze the characteristic information of the first waveform. The analysis section 22 may analyze the characteristics of the second waveform (hereinafter referred to as the characteristic information of the second waveform). The characteristic information of the first waveform and / or The characteristic information of the two waveforms may be information about the period of the first waveform and / or the second waveform. The characteristic information of the first waveform and / or the characteristic information of the second waveform may be a fixed period of the first waveform and / or the second waveform. The characteristic information of the first waveform and / or the characteristic information of the second waveform may be a fixed period of the first waveform and / or the second waveform. The analysis unit 22 may obtain the frequency by, for example, performing a Fourier transform on the voltage of the vibration generated by the body sound acquired by the acquisition unit 10.

[0028] The second waveform may be data including a waveform of a sound originating from the target area. The second waveform may be a reference waveform for the first waveform. The second waveform may be at least one of previously acquired data including a waveform of a sound originating from the target area of ​​the living body, a normal waveform which is an ideal waveform, and an abnormal waveform which is a waveform different from the ideal waveform. The second waveform may be any of a waveform acquired by the acquisition unit 10, a waveform acquired by a device other than the waveform acquisition device 1, and a waveform created by a computer, etc. The normal waveform may be a waveform of the same person as the living body whose first waveform was measured, or a waveform of a different person from the living body whose first waveform was measured. The abnormal waveform may be a waveform suspected of being indicative of a disease.

[0029] A cardiac cycle is made up of diastole, when the heart expands, and systole, when the heart contracts, with one heartbeat. During systole, the first sound is generated, which is the sound of the atrioventricular valves closing. During diastole, the second sound is generated, which is the sound of the aortic valve and pulmonary valve closing. When the heart works normally, one heartbeat is one cycle, and it moves at a regular interval. When the heart does not work normally, it does not move at a regular interval and / or a heart murmur occurs. A heart murmur is a heart sound that does not occur in a normal heart. A period may be from the beginning of the first note to the end of the second note.

[0030] For example, in the case of heart sounds, a normal waveform may be a waveform in which the first and second sounds alternate at a regular interval and in which there is little possibility of a waveform suspected of being a heart murmur being included between the first and second sounds. An abnormal waveform may be a waveform in which the first and second sounds do not alternate at a regular interval and / or in which there is a waveform suspected of being a heart murmur being included between the first and second sounds. The abnormal waveform may be, for example, a waveform caused by aortic stenosis, aortic regurgitation, The waveform may be characteristic of cardiac diseases such as valvular heart disease including mitral stenosis, mitral regurgitation, and mitral valve prolapse, and arrhythmia.

[0031] For example, in the case of respiratory sounds, the normal waveform may be a waveform due to tracheal respiratory sounds, bronchial respiratory sounds, alveolar respiratory sounds, etc. The abnormal waveform may be a waveform due to abnormal sounds characteristic of respiratory diseases, such as snoring, whooshing, crepitus, and water bubbles.

[0032] The analysis unit 22 may analyze, for example, the period of the waveform, the shape of the waveform, the number of periods per time, etc. The characteristic information of the first waveform and / or the characteristic information of the second waveform analyzed by the analysis unit 22 may be controlled. The analysis unit 22 may transmit the waveform characteristics to the analysis unit 20. The analysis unit 22 may identify multiple periods and analyze periods that have different waveform characteristics compared to waveforms of other periods.

[0033] The storage unit 23 stores various programs and data including application programs. The storage unit 23 may be configured using, for example, a semiconductor memory, a magnetic memory, an optical memory, etc. The semiconductor memory may include a volatile memory and a non-volatile memory. The magnetic memory may include, for example, a hard disk and a magnetic tape, etc. The optical memory may include, for example, a CD (Compact Disc), a DVD (Digital Versatile Disc), and a BD (Blu-ray Disc) (registered trademark), etc. The storage unit 23 stores various information and programs necessary for the operation of the control unit 20.

[0034] The storage unit 23 may store at least one of, for example, a first waveform, a first sound, a type of the first waveform, characteristic information of the first waveform, first information, a second waveform, a second sound, a type of the second waveform, characteristic information of the second waveform, and second information. The second waveform may be stored in an external database. The storage unit 23 may acquire the second waveform by reading out the database. The second sound may be sound data obtained by converting the second waveform into sound. The second information may be information obtained from the second waveform, for example, information into which characteristics of the second waveform have been input. The type of the second waveform may be, for example, a type of waveform such as respiratory system sounds including respiratory sounds, circulatory system sounds including heart sounds, digestive system sounds including bowel sounds, and fetal heart sounds. The second information may be information obtained from the second waveform. The storage unit 23 may store at least one of, for example, the second waveform, the second sound, a type of the second waveform, characteristic information of the second waveform, and the second information in association with each other.

[0035] The image processing unit 24 may display on the display unit 30 an image 31 created from the information acquired by the acquisition unit 10 and the control unit 20. The image processing unit 24 acquires at least one of a first waveform, a first sound, a type of the first waveform, characteristic information of the first waveform, first information, a second waveform, a second sound, a type of the second waveform, characteristic information of the second waveform, and second information from the control unit 20. The image processing unit 24 may transmit the image 31 to the control unit 20. The image processing unit 24 may select the type of the second waveform based on the information about the first waveform acquired from the control unit 20.

[0036] The image processing unit 24 may cause the display unit 30 to display an image 31 showing a first waveform. The image processing unit 24 may cause the display unit 30 to display an image 31 showing a second waveform. The image processing unit 24 may cause the display unit 30 to display an image 31 showing at least two or more types of acquired data including waveforms of sounds originating from a target part of a living body acquired in the past, a normal waveform, and an abnormal waveform. The image processing unit 24 may cause the display unit 30 to display an image 31 showing the first waveform and the second waveform. The image processing unit 24 may cause the display unit 30 to display an image 31 showing the first waveform in real time. The image processing unit 24 may cause the display unit 30 to display an image 31 showing only one cycle of the first waveform and / or the second waveform. The image processing unit 24 may cause the display unit 30 to display an image 31 showing multiple cycles of the first waveform and / or the second waveform. The image processing unit 24 may cause the display unit 30 to display an image 31 showing multiple cycles of the first waveform and / or the second waveform.

[0037] The first waveform and / or the second waveform may be displayed, for example, as a time waveform. For example, the horizontal axis may represent time and the vertical axis may represent voltage. The first waveform and / or the second waveform may be displayed, for example, as a spectrogram. The spectrogram may, for example, represent time on the horizontal axis and frequency on the vertical axis. The spectrogram may show intensity at a certain frequency at a certain time point using brightness or color.

[0038] The image processing unit 24 may cause the display unit 30 to display an image 31 in which the first waveform and the second waveform are superimposed. The image processing unit 24 may cause the display unit 30 to display an image 31 in which the first waveform and the second waveform are displayed in different colors. The image processing unit 24 may cause the display unit 30 to display an image 31 in which the first waveform and the second waveform are displayed with different lines. The image processing unit 24 determines whether the first waveform satisfies a third condition. If the third condition is not satisfied, the image processing unit 24 may cause the display unit 30 to display an image 31 in which at least a portion of the first waveform is displayed differently from the normal display. The different display refers to a display that is different from at least a portion of the first waveform that satisfies the third condition. The different display may involve superimposing an icon image 37 on a portion that does not satisfy the third condition. The third condition may be, for example, that the difference in voltage between the first waveform and the second waveform is within a predetermined range. The third condition may be, for example, that the difference in frequency between the first waveform and the second waveform is within a predetermined range.

[0039] The third condition may be, for example, that the difference in frequency between the first waveform and the second waveform is within 1 kHz.

[0040] The image processing unit 24 may cause the display unit 30 to display an image 31 in which the first waveform and the second waveform are displayed side by side. The image processing unit 24 may cause the display unit 30 to display an image 31 in which the first waveform and the second waveform are superimposed. The image processing unit 24 may cause the display unit 30 to display an image 31 in which the first waveform and the second waveform are superimposed, based on a fourth condition.

[0041] The fourth condition may be to align the time widths of the period (ΔT1) of the first waveform and the period (ΔT2) of the second waveform. The fourth condition may be to change the time width of the period (ΔT2) of the second waveform based on the period (ΔT1) of the first waveform. The fourth condition may be to change the time width of the period (ΔT1) of the first waveform based on the period (ΔT2) of the second waveform.

[0042] The image processing unit 24 may, for example, measure the time of the period (ΔT1) of the first waveform and the period (ΔT2) of the second waveform, and align the time widths by multiplying the time data of the second waveform by (ΔT1 / ΔT2).

[0043] The fourth condition may be that the position where the first waveform reaches its maximum value and the position where the second waveform reaches its maximum value are aligned. The fourth condition may be that the position where the second waveform reaches its maximum value are changed based on the position where the first waveform reaches its maximum value. The fourth condition may be that the position where the first waveform reaches its maximum value are changed based on the position where the second waveform reaches its maximum value. For example, in the case of heart sounds, the fourth condition may be that the position where the first sound of the first waveform reaches its maximum value and the position where the first sound of the second waveform reaches its maximum value are aligned. For example, in the case of heart sounds, the fourth condition may be that the position where the second sound of the first waveform reaches its maximum value and the position where the second sound of the second waveform reaches its maximum value are aligned.

[0044] The fourth condition may be that the time widths of the cycles of the first waveform and the second waveform are the same, and that the maximum value of the first waveform and the maximum value of the second waveform are the same.

[0045] The fourth condition may be that the position where the first waveform takes the maximum value and the position where the second waveform takes the maximum value are aligned, and that the maximum value of the first waveform and the maximum value of the second waveform are aligned.

[0046] When the image processing unit 24 performs the adjustment based on the fourth condition, the adjustment is not performed on the display unit 30. A video 31 showing the content that has been deleted may be displayed.

[0047] The image processing unit 24 may cause the display unit 30 to display an image 31 indicating the type of the first waveform and / or the second waveform.

[0048] The image processing unit 24 may cause the display unit 30 to display an image 31 indicating a play button 33a that outputs a first sound. The image processing unit 24 may cause the display unit 30 to display an image 31 indicating a play button 33b that outputs a second sound. When the play button 33a is selected, the image processing unit 24 may output the first sound. When the play button 33b is selected, the image processing unit 24 may output the second sound.

[0049] If the discriminator 21 is unable to discriminate the type of waveform, the image processor 24 may cause the display 30 to display an image 31 prompting the user to acquire the first waveform again.

[0050] The image processing unit 24 may cause the display unit 30 to display an image 31 showing the second information.

[0051] The image processing unit 24 may cause the display unit 30 to display an image 31 that prompts the user to input the first information.

[0052] The display unit 30 receives the image generated by the image processing unit 24 from the control unit 20 and displays it. The display unit 30 may be, for example, a terminal having a display function such as a display. The display unit 30 may be, for example, a terminal having a speaker that outputs sound in addition to the display function such as a display. The display unit 30 may be, for example, a terminal having a speaker that outputs sound and a microphone that inputs sound in addition to the display function such as a display. The terminal may be, for example, a personal computer, a tablet terminal, a smartphone, etc. The display unit 30 may include, for example, a liquid crystal display and an organic EL (electroluminescence) display, etc. The display unit 30 may display an image 31 input from the control unit 20 via, for example, a network.

[0053] The display unit 30 may function as a touch screen capable of receiving user operations. The display unit 30 may include switches and keys capable of receiving user operations. The switches may include physical switches and electronic switches. The keys may include physical keys and electronic keys. Upon receiving a user operation, the display unit 30 may transmit a user input based on the operation to the control unit 20.

[0054] The waveform acquisition device 1 according to this embodiment displays a first waveform including the waveform of a sound originating from a target part of a living body and a second waveform that is a reference waveform related to the target part. By displaying the first waveform and the second waveform superimposed on each other, the waveform acquisition device 1 can make it easier for the user to compare the first waveform with the second waveform. As a result, the waveform acquisition device 1 can improve user convenience.

[0055] The user input may be first information about the image 31 displayed on the display unit 30. The first information may be information about the first waveform obtained from the first waveform and / or the second waveform shown in the image 31. The first information may be information obtained by comparing the first waveform with the second waveform. The first information may be information obtained by inputting the state of the first waveform. The first information may be information obtained by comparing the first waveform with the second waveform. For example, the first information may be audio information input from a microphone, or text information input from an input device such as a keyboard.

[0056] The processing procedure in the control unit 20 will be described with reference to FIG.

[0057] First, the control unit 20 acquires the first waveform acquired by the acquisition unit 10 (step S1).

[0058] The discriminator 21 determines whether the type of the first waveform can be discriminated (step S4).

[0059] If it is determined in step S4 that the type of the first waveform cannot be identified, the image processing unit 24 causes the display unit 30 to display an image 31 prompting the user to acquire the first waveform again (step S2).

[0060] The analysis unit 22 analyzes the characteristics of the first waveform (step S3).

[0061] If it is determined in step S4 that the type of the first waveform can be determined, the determination unit 21 determines the type of the first waveform (step S5).

[0062] The control unit 20 determines whether or not a second waveform including the same waveform type as the first waveform type determined by the determination unit 21 exists in the storage unit 23 (step S6).

[0063] If it is determined in step S6 that a second waveform of the same waveform type as the first waveform does not exist in the storage unit 23, the process proceeds to step S8. The details of step S8 will be described later. If it is determined in step S6 that a second waveform of the same waveform type as the first waveform exists in the storage unit 23, it is determined whether second information linked to the second waveform exists in the storage unit 23 (step S7).

[0064] The control unit 20 inputs the first waveform, the type of the first waveform, and the first sound to the image processing unit 24, and the process proceeds to step S13 (step S8). The details of step S13 will be described later.

[0065] If it is determined in step S7 that the second information linked to the second waveform does not exist in the memory unit 23, the process proceeds to step S10. The details of step S10 will be described later. If it is determined in step S7 that the second information linked to the second waveform exists in the memory unit 23, the control unit 20 inputs the second information to the image processing unit 24 (step S9).

[0066] The control unit 20 inputs the first waveform and the second waveform to the analysis unit 22. The analysis unit 22 analyzes the characteristics of the second waveform (step S10).

[0067] The image processing unit 24 analyzes the characteristic information of the first waveform and / or the characteristic information of the second waveform analyzed by the analysis unit 22. The first waveform and the second waveform are aligned based on the characteristic information (step S11).

[0068] The control unit 20 inputs the type of the first waveform, the first sound, and the second sound to the image processing unit 24 (step S12).

[0069] The image processing unit 24 creates the image 31. The control unit 20 outputs the image 31 to the display unit 30 (step S13).

[0070] The control unit 20 determines whether or not the first information input to the display unit 30 exists (step S14).

[0071] If it is determined in step S14 that the first information does not exist, the process ends. If it is determined in step S14 that the first information exists, the control unit 20 associates the first waveform with the first information and inputs them into the storage unit 23 (step S15).

[0072] The image 31 generated by the image processing unit 24 in the waveform acquisition device 1 of this embodiment will be described with reference to Fig. 3. The image processing unit 24 may generate, for example, the image 31 that makes it easy to grasp the first waveform acquired by the acquisition unit 10.

[0073] The waveform name 32 may indicate, for example, the type of waveform determined by the determination unit 21 .

[0074] The play button 33a outputs a first sound. The play button 33b outputs a second sound. When the play buttons 33a and 33b are selected, sound data is output. The play buttons 33a and 33b may, for example, play a sound obtained by converting a waveform acquired by the acquisition unit 10. The play buttons 33a and 33b may, for example, play a sound obtained by converting a waveform stored in the memory unit 23. The play buttons 33a and 33b may, for example, play a sound acquired by the acquisition unit 10. The play buttons 33a and 33b may, for example, play a sound stored in the memory unit 23. The image processing unit 24 may display an image 31 displaying the play button 33a on the display unit 30. The image processing unit 24 may display an image 31 displaying the play button 33b on the display unit 30. The image processing unit 24 may display an image 31 displaying the play button 33a and / or the play button 33b on the display unit 30.

[0075] The displayed waveform 34 may display a first waveform. The displayed waveform 34 may display a second waveform. The displayed waveform 34 may display a first waveform and / or a second waveform. The displayed waveform 34 may, for example, display multiple second waveforms. The displayed waveform 34 may, for example, display at least two or more of previously acquired data including waveforms of sounds originating from a target part of a living body, normal waveforms, and abnormal waveforms. The displayed waveform 34 may, for example, be displayed as a time waveform. The displayed waveform 34 may, for example, be displayed as a spectrogram. In FIG. 3, the first waveform and the second waveform are displayed overlapping each other, but the displayed waveform 34 may be displayed individually or not depending on the waveform selection. Furthermore, the displayed waveform 34 may be displayed in real time. The displayed waveform 34 may be displayed after the first waveform has been acquired for a predetermined time. In FIG. 3, the displayed waveform 34 displays only one cycle, but multiple cycles may be displayed. Among the multiple cycles, a cycle with waveform characteristics different from the other waveforms and a normal cycle may be displayed.

[0076] The comment display 35 may display second information.

[0077] The comment input 36 may be used to input first information. The comment input 36 may be used by a user to input knowledge about the first waveform after viewing the displayed waveform 34. The comment input 36 may be used to input a comparison between the first waveform and the second waveform. Although text is input in FIG. 3, voice may also be input. The first information input into the comment input 36 may be linked to the first waveform and input into the storage unit 23.

[0078] The icon image 37 may be superimposed at a location where the first waveform differs from the second waveform by more than a third condition. The icon image 37 may be any shape that makes it easy to understand the difference between the first waveform and the second waveform. The icon image 37 may be any shape, such as a circle or a square.

[0079] The image 31 generated by the image processing unit 24 in the waveform acquisition device 1 of this embodiment will be described with reference to Fig. 4. In Fig. 4, components with the same names as those in Fig. 3 have the same configurations and functions, and their description will be omitted. The image processing unit 24 may, for example, generate an image 31 that makes it easy to grasp the first waveform acquired by the acquisition unit 10. The displayed waveform 34 may, for example, display the first waveform and the second waveform side by side.

[0080] Although the embodiments of the present disclosure have been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications or alterations based on the present disclosure. Therefore, it should be noted that these modifications or alterations are included in the scope of the present disclosure. For example, the functions included in each component or step can be rearranged so as not to cause logical inconsistencies, and multiple components or steps can be combined or divided into one. The embodiments of the present disclosure are based on a program executed by a processor included in the device. The present disclosure can also be realized as a storage medium on which a program is recorded or a program is recorded. It should be understood that the scope of the present disclosure also includes these. [Explanation of symbols]

[0081] 1 Waveform acquisition device 10 Acquisition Department 20 Control Unit 21 Discrimination part 22 Analysis Department 23 Memory section 24 Image processing section 30 Display section 31 Video 32 Waveform name 33a, 33b Play button 34 Display waveform 35 Comments Displayed 36 Comments 37 Icon Images

Claims

1. an acquisition unit that acquires a first waveform including a waveform of a sound originating from a target part in a living body; a storage unit that stores a second waveform that is a reference waveform related to the target region; a display unit that displays the first waveform and the second waveform. Waveform acquisition device.

2. The second waveform is at least one of a waveform of the living body acquired in the past, an ideal waveform, and a waveform different from the ideal waveform. The waveform acquisition device according to claim 1 .

3. the display unit displays the first waveform and the second waveform in a superimposed manner. The waveform acquisition device according to claim 1 .

4. The first waveform and the second waveform are displayed such that the position where the first waveform takes its maximum value and the position where the second waveform takes its maximum value are aligned. The waveform acquisition device according to claim 3 .

5. the display unit displays the first waveform and the second waveform in different colors. The waveform acquisition device according to claim 1 .

6. the display unit displays the first waveform and the second waveform with different lines. The waveform acquisition device according to claim 1 .

7. the display unit displays the first waveform and the second waveform side by side. The waveform acquisition device according to claim 1 .

8. a control unit that determines whether the first waveform and the second waveform differ by a predetermined value or more; the display unit displays at least a part of the first waveform determined by the control unit to be different from the first waveform and the second waveform that are not determined to be different. The waveform acquisition device according to claim 1 .

9. First information obtained from the first waveform displayed on the display unit is input. The waveform acquisition device according to claim 1 .

10. the first information is input based on the first waveform and the second waveform displayed on the display unit; The waveform acquisition device according to claim 9 .

11. the first information is audio information; The waveform acquisition device according to claim 9 .

12. a discrimination unit that discriminates the type of the first waveform, the discriminator discriminates the type of waveform of any one of heart sounds, respiratory sounds, and bowel sounds; The waveform acquisition device of claim 1.

13. A first waveform including a waveform of a sound originating in a target part of a living body acquired by an acquisition unit and a second waveform which is a reference waveform related to the target part stored in a storage unit are displayed. Display device.

Images