KR200269579Y1 - Potable diagnostic system for the heart and lung sounds - Google Patents

Abstract

The present invention shows the sound and sound of the heart and lungs together with auscultation, and enables the clinician to provide the users with the objective and quantitative information in the form of diagnostic results through the heart and lungs. The present invention relates to a portable cardiopulmonary sound diagnosis device which is configured to be simple so that a user can directly diagnose the self.

The present invention, the branch tube to enable the listening of the collection signal detected by the cardiopulmonary sound measuring unit 10 from the other end of the main tube 20 is provided with a cardiopulmonary sound measuring unit 10 to measure the cardiopulmonary sound at one end A stethoscope means (A) formed with 30; The easy to carry analysis means (B) for receiving the cardiopulmonary sound signal collected by the stethoscope means (A), separating, analyzing, diagnosing and outputting the signal is presented.

According to the structure of the present invention, the contact microphone using piezoelectric film not only provides quantitative information about the heart sound and the lung sound that the clinicians could not hear outside the audible frequency range or by individual differences, as well as the first and second heart sounds. Since the ventricular depolarization signal required for classification is also detected, the user can see the cardiopulmonary sound waveform and the ventricular depolarization waveform at the same time to make a more accurate diagnosis. Analyze the input cardiopulmonary signal in the time and frequency domain and show the waveform, and extract the characteristics of each disease and show the diagnosis result for the input signal. Self-diagnosis of disease more easily and quickly This can help you get the treatment done as soon as possible.

Description

Portable diagnostic system for the heart and lung sounds

The present invention relates to a portable cardiopulmonary diagnosing device, and more specifically, auscultation of heart and lung sounds, waveforms and sounds, and clinicians diagnose the results of heart and lung sounds in the form of objective and quantitative information. The present invention relates to a portable cardiopulmonary sound diagnosis device that can be provided to users, and is also configured to be portable so that the user can self-diagnose himself.

In general, the heart sound (heart sound) refers to the vibration or sound caused by the sudden acceleration and deceleration of the blood, mainly due to the opening and closing of the heart valve or the sudden tension of the intracardiac structure. In addition, the pulmonary sound is divided into two types, the respiratory sound and the incidental pulmonary sound. The respiratory sound is a normal noise that can be heard in the chest wall during respiration, and the incidental pulmonary sound is an abnormal sound added to the respiratory sound. Indicates a disease.

The current analysis of the disease is performed by the clinician's subjective judgment by obtaining information through a stethoscope. This method can be heard only at the moment of auscultation, listening to only the clinician alone, and the range of hearing is different for each clinician. In addition, conventional stethoscopes are very difficult for non-clinicians to use, and for the objective and accurate analysis of the patient's condition, stethoscopes can be heard and stored and regenerated with other clinicians. It is impossible.

In order to make up for such drawbacks, electronic stethoscopes have been developed that complement the existing stethoscopes. Looking at the patent technology related to this, there is no system for distinguishing the first heart sound and the second heart sound, such as ventricular depolarization detection electrode that can distinguish the heart sound, it is unclear to distinguish between the first and second heart sound. And, there is no information on the characteristics of the microphone, which can be said to be the most important part of the electronic stethoscope system. The microphone has an air contact type and a body contact type, and when using the body contact type microphone, it is possible to accurately detect a process in which the sound actually generated in the human body is transmitted through the skin. In addition, the self-diagnostic digital stethoscope (10-1999-0035076), which has enhanced analysis of collected heart sounds and lung sounds, can be distinguished from heart sounds and lung sounds even though the distinction between heart sounds and lung sounds must be preceded. There is no filtering device. There is no digital signal processing device that can analyze and display the input digital signal, and there is no detection function of ventricular depolarization signal which must be parallel to analyze heart sound accurately.

Therefore, the present invention was created to solve the above problems. The purpose of the present invention is to provide a function of listening to a cardiopulmonary sound and detecting ventricular depolarization waveform using a body contact microphone using piezoelectric film, unlike a conventional electronic stethoscope. It also includes a miniaturized portable analyzer that stores cardiopulmonary sound data for each disease, and the input cardiopulmonary sound data is divided into heart sound and lung sound to provide a portable cardiopulmonary diagnostic device that can simultaneously display waveforms and analysis results. Is in.

In addition, the present invention as a technical idea for achieving the above object of the present invention to provide information for separating the first heart sound and the second heart sound through the detection of ventricular depolarization waveform; 2) the analyzer focuses on miniaturization, making it easy to carry; 3) Accurately isolate the amplified and filtered heart and lung data from the analyzer at the analyzer; 4) including a touch screen type display device so that the separated cardiopulmonary sound can be displayed on the display device by means of a heart sound waveform, a closed sound waveform, and an analysis result; 5) database the cardiopulmonary sound data for specific diseases and make them available for medical education; 6) Provides intelligent cardiopulmonary diagnosis system that can present the diagnosis result through cardiopulmonary analysis.

1 is an external view showing a stethoscope means in the diagnostic device of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1. FIG.

Figure 3 is a bottom view of the stethoscope means in the diagnostic device of the present invention.

Figure 4 is a block diagram showing the configuration and operation of the stethoscope means.

5 is an external view showing the stethoscope means and the analysis means in the diagnostic device of the present invention.

Figure 6 is a block diagram showing the configuration and operation flow of the analysis means.

7 is an external view of analysis means.

*** Explanation of symbols for main parts of drawing ***

A: auscultation means, 10: cardiopulmonary measurement unit,

11: housing, 12: microphone,

13: ventricular depolarization detection electrode, 17: analog circuit stage,

17-1, 17-2, 17-3: amplification means, 17-4: filter,

18: speaker, 19: power switch,

20: main tube, 30: branch tube,

31: earpiece, B: analysis means,

40-1: filter, 40-2: main amplifier,

50: A / D converter, 55: storage unit,

60: digital signal processing unit, 65: touch screen type display unit,

70: database portion, 80: casing,

81: power button, 82: mute button,

83: Move / Select Button, 84: Jack Terminal,

85: built-in speaker, 86: volume control stage,

87: computer connector,

The present invention for achieving the above object, the stethoscope means formed with a branch tube to enable the listening of the collection signal detected by the cardiopulmonary sound measuring unit from the other end of the main tube equipped with a cardiopulmonary sound measuring unit for measuring the cardiopulmonary sound at one end; and,

It is characterized in that it comprises a portable analysis means for receiving the cardiopulmonary sound signal collected by the stethoscope means to separate, analyze, diagnose and output the signal.

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

1 is an external view showing a stethoscope means in the diagnostic device of the present invention, Figure 2 is a cross-sectional view taken along the line A-A of Figure 1, Figure 3 is a bottom view of the stethoscope means in the diagnostic device of the present invention, Figure 4 5 is a block diagram showing the configuration and operation flow of the stethoscope means, Figure 5 is an external view showing the stethoscope means and analysis means in the diagnostic device of the present invention, Figure 6 is a block showing the configuration and operation flow of the analysis means 7 is an external view of an analysis means.

The construction of the present invention consists of auscultation means and analysis means.

First, as shown in Figure 1, the stethoscope means (A) at the cardiopulmonary sound measuring unit 10 from the other end of the main tube 20 is provided with a cardiopulmonary sound measuring unit 10 for measuring a cardiopulmonary sound at one end A branch tube 30 is formed to allow the collection signal to be detected, and each end of the branch tube 30 has a shape similar to that of a general stethoscope having an earpiece 31 that can be inserted into an ear.

On the other hand, the configuration of the cardiopulmonary sound measuring unit 10 of the stethoscope means (A) is located in the center of the bottom of the housing 11, as shown in Figure 2 to 3, the microphone 12 for measuring and collecting the cardiopulmonary signal is It is provided. The microphone 12 applied in the present invention is not a general non-contact type, but a body contact type microphone including an impedance matching circuit using a piezoelectric film.

In addition, two ventricular depolarization detection electrodes 13 for detecting ventricular depolarization waveforms are disposed on both sides of the microphone 12 to distinguish the first and second heart sounds.

The housing 11 for mounting the microphone 12 and the ventricular depolarization detection electrode 13 is fitted with a rubber cover 14 in contact with the body at the lower end thereof, and has a shape surrounding the microphone 12 at the upper part thereof. The upper cover 15, which is two members, is interposed, and has a configuration in which a bottom cover 16 made of brass is installed to fix the rubber cover 14.

In addition, the signal detected by the microphone 12 and the detection signal from the ventricular depolarization detection electrode 13 are configured to be electrically connected to a terminal of the analog circuit stage 17 which will be described later.

On the other hand, the analog circuit stage 17 is a pre-amplifier 17-1 and a differential amplifier 17-17, which are output at a suitable impedance to amplify each signal detected and input from the microphone 12 and the ventricular depolarization detection electrode 13. 2), the filter 17-4 for removing the noise component of the amplified signal, each signal within a waveform range that does not include the output waveform of the noise-removed cardiopulmonary signal, preferably 10 Hz to 5 kHz Amplifying the main amplifier (17-3) and the like, the outer cover portion is provided with a power switch 19 for applying power, the lower end of the volume control stage (19-1) for adjusting the size of the cardiopulmonary sound It is provided.

In addition, at the branch end branched from the main tube 20, a small speaker 18 is provided so that the amplified cardiopulmonary signal can be output to both ears through the branch tube 30 and the earpiece 31, which are sound transmission conduits. Although not shown in detail in the drawing, a power supply terminal for using a battery as a power source is provided in the proximity side where the speaker 18 is installed.

As shown in FIG. 4, the stethoscope means A is electrically connected to the analysis means B, which is easy to carry, to analyze and diagnose the cardiopulmonary sound signal processed by the stethoscope means A, and visualize the result. And auditory presentation.

Next, the configuration of the analysis means (B) will be described in detail with reference to FIGS. 5 to 7.

The core configuration of the analysis means (B), the filter 40-1 and the main amplifier for filtering the ventricular depolarization signal amplified by the differential amplifier 17-2 at an arbitrary frequency and re-amplified in a state where noise is removed ( 40-2), an A / D converter 50 for converting the filtered and amplified cardiopulmonary signal into a digital signal, and a read / write recording medium for storing the digital signal from the A / D converter 50. A storage unit 55 and a digital signal processor 60 for extracting features of cardiopulmonary sound by disease by applying time and frequency domain analysis to the cardiopulmonary sound signal converted into digital signals, and from the digital signal processor 60. The touch screen display unit 65 for displaying the waveform analysis data of the signal-processed cardiopulmonary signal and data of disease names and cardiopulmonary waveforms classified by disease are stored and the data is displayed as waveforms. And a database unit 70 that triggers a (65).

Meanwhile, the touch screen display unit 65 is configured to classify the signal-processed cardiopulmonary sound into a heart sound and a lung sound, and simultaneously display three waveforms including a ventricular depolarization waveform.

In addition, the analysis means (B) is provided with means for outputting the cardiopulmonary signal from the analog circuit stage 17 so that the subject to hear the cardiopulmonary signal directly.

On the other hand, the analysis means (B) of the present invention has a box-shaped casing (80) to be easy to carry as shown in FIG. The front portion of the casing 80 is provided with a touch screen type display unit 65 for displaying various waveforms, and at the bottom thereof, a power button 81 for turning on / off a power and a mute button for canceling a voice output. 82) and a menu movement / selection button 83 for selecting a function of the touch screen display unit 65, and an upper end of the jack terminal 84 and an internal speaker electrically connected to the stethoscope means A. 85 is disposed, the side end portion is configured with a volume control stage 86 for adjusting the audio output of the built-in speaker (85). In addition, a computer connection terminal 87 that is electrically connected to a personal computer PC is also provided on the proximal side of the jack terminal 84.

Referring to the operating state of the subject innovation configured as described above are as follows.

Ventricular depolarization waveform from body contact microphone 12 using a ventricular depolarization detection electrode 13 and piezoelectric film for detecting ventricular depolarization waveform while power is applied by pressing power switch 19 of analog circuit stage 17. When the heart sound and the lung sound are collected, the amplification is first performed by the preamplifier 17-1 and the differential amplifier 17-2 of the analog circuit stage 17 of the cardiopulmonary sound measuring unit 10, and the filter 17-4 (40). Filter at -1). Signals from which noise components have been removed through the filters 17-4 and 40-1 are amplified again within the range not including the output waveform by the main amplifiers 17-3 and 40-2 to the speaker 18. The cardiopulmonary sound transmitted and established in the speaker 18 is delivered along the branch tube 30, which is a sound transmission conduit, to the earpiece 31 of both ears so that the clinician can hear the cardiopulmonary sound accurately.

Meanwhile, the cardiopulmonary sound and ventricular depolarization signals input from the main amplifier 17-3 of the stethoscope means A are converted into digital signals through the A / D converter 40, and the converted signals are once stored in the storage unit 55. At the same time, the diagnosis results are presented by extracting the features of the cardiopulmonary sound by the algorithm of the digital signal processing unit 60 which is stored through the time domain and the frequency domain analysis.

At this time, the heart sound and the closed sound are separated, and the waveform is simultaneously displayed on the touch screen display unit 65, and the ventricular depolarization signal waveform for distinguishing the first heart sound and the second heart sound is also displayed. The signal input from the auscultation means (A) is heard by a plurality of persons including the diagnosers by the same sound as the cardiopulmonary sound that can be heard from the earpiece 31 of the auscultation means (A) through the internal speaker 85 of the analysis means (B). Can be.

In addition, the database unit 70 may reproduce the cardiopulmonary sound already classified and stored for each disease, display the cardiopulmonary sound signal of the diagnoser, and listen to the sound.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the portable cardiopulmonary diagnosis apparatus according to the present invention has the following advantages.

First, according to the present invention, a contact microphone using a piezoelectric film having excellent characteristics not only provides quantitative information about the heart sound and lung sound that clinicians could not hear outside the audio frequency range or by individual differences, but also the first heart sound. The ventricular depolarization signal required for the classification of the second and second heart sounds is also detected so that the user can see the cardiopulmonary and ventricular depolarization waveforms at the same time to make a more accurate diagnosis, and the sound can be heard through the speaker for academic and educational purposes. have.

Second, according to the present invention, the input cardiopulmonary signal is analyzed in the time and frequency domain, and the waveform is displayed, and the disease-specific features are extracted to show the diagnosis result for the input signal. Because of their ease of use, they can help the average user get to the point of self-diagnosis and treatment as soon as possible.

Claims (7)

(Correction) Branch tube to enable the listening of the collection signal detected by the cardiopulmonary sound measuring unit 10 from the other end of the main tube 20 is provided with a cardiopulmonary sound measuring unit 10 for measuring the cardiopulmonary sound at one end ( 30 is formed with a stethoscope means (A); A filter 40-1 and a main amplifier 40-2 for filtering the ventricular depolarization signal amplified by the stethoscope means A to an arbitrary frequency and re-amplifying it in a state where noise is removed, and the filtered and amplified cardiopulmonary signal. And an A / D converter 50 for converting the ventricular depolarization signal into a digital signal, a storage unit 55 for storing the digital signal from the A / D converter 50, and a cardiopulmonary signal converted into a digital signal. Touch screen for displaying waveform analysis data of the cardiopulmonary signal signal-processed from the digital signal processing unit 60 and the digital signal processing unit 60 to extract the features of the cardiopulmonary sound by disease by applying time and frequency domain analysis Type display unit 65 and analysis means (B) of the database unit 70 for storing the data of the disease name and cardiopulmonary sound waveform classified by disease so that the data is displayed on the display unit 65 as a waveform; Portable cardiopulmonary sound diagnostic apparatus, characterized by more than true. (Correction) The method according to claim 1, wherein the cardiopulmonary sound measuring unit 10, A body contact microphone 12 positioned at the bottom center of the housing 11, using a piezoelectric film for measuring and collecting a cardiopulmonary signal, and including an impedance matching circuit; Two ventricular depolarization detection electrodes (13) installed at both sides of the microphone (12) for measuring and collecting ventricular depolarization signals for distinguishing a first heart sound from a second heart sound; An analog circuit stage (17) having amplifiers (17-1) (17-2) (17-3) and filters (17-4) for amplifying and filtering cardiopulmonary signals among collected signals; And And a speaker (18) installed at a branch end branched from the main tube (20) and electrically connected to the analog circuit terminal (17) to output the amplified cardiopulmonary sound. The apparatus of claim 2, wherein the frequency band of the filter (17-4) of the analog circuit stage (17-4) is set to 10 Hz to 5 kHz. (delete) The apparatus of claim 1, wherein the display unit (65) classifies the signal-processed cardiopulmonary sound into a heart sound and a lung sound, and displays three waveforms including ventricular depolarization waveforms at the same time. (delete) (Correction) The method according to claim 1, wherein the analysis means (B) is made of a box-type casing 80 to be easy to carry, the front screen of the casing 80 is a touch screen type display unit 65 that various waveforms are displayed Is provided at the bottom of the power button on / off the power button 81, the mute button 82 to mute the audio output and the menu move / selection button to select the function of the touch screen display unit 65 ( 83), the upper end of the cardiac sound signal from the cardiopulmonary sound measuring unit 10 so that the jack terminal 84 electrically connected to the stethoscope means (A) and the subject to hear the cardiopulmonary signal directly Portable cardiopulmonary sound diagnosis device, characterized in that the built-in speaker (85) is disposed, the side end portion is configured with a volume control stage (86) for adjusting the voice output of the built-in speaker (85).