CN215227799U

CN215227799U - Digital stethoscope

Info

Publication number: CN215227799U
Application number: CN202023025317.0U
Authority: CN
Inventors: 陈俊; 洪洁新; 于小林; 陈乐锋
Original assignee: Shenzhen Biocare Bio Medical Equipment Co ltd
Current assignee: Shenzhen Biocare Bio Medical Equipment Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-12-21
Anticipated expiration: 2030-12-15
Also published as: WO2022126820A1

Abstract

The embodiment of the utility model discloses a digital stethoscope, through set up ordinary auscultation head, control division and electrocardio heart sound auscultation head in digital stethoscope, the electrode slice that electrocardio heart sound auscultation head set up acquires the heart electric wave information of maximum amplitude to obtain accurate heart electric wave data through signal processing module, the heart sound sensor in the electrocardio heart sound auscultation head gathers heart sound wave information, and obtain accurate heart sound wave data through signal processing module; and then the wireless communication module in the control part transmits the received electrocardio wave data and the heart sound wave data to the external display equipment which is connected with the wireless communication module in a wireless communication way, the effect of displaying an electrocardio-phonocardiogram in real time is realized, and the digital stethoscope can also realize the effect of ordinary auscultation through an ordinary stethoscope head, so that the digital stethoscope can simultaneously have the functions of ordinary auscultation and real-time display of the electrocardio-phonocardiogram, and the digital stethoscope is small in size, high in flexibility and convenient to operate.

Description

Digital stethoscope

Technical Field

The utility model relates to a medical auscultation technical field especially relates to a digital stethoscope.

Background

Cardiac auscultation is one of the most commonly used diagnostic methods for clinicians, and thus the stethoscope is also an integral tool for auscultation. At present, the types of tools for cardiac electrical heart sound detection mainly include: a common stethoscope, a special electrocardio-phonocardiogram detector, a dynamic electrocardio-phonocardiogram detector and a digital stethoscope. However, a common stethoscope has two replaceable heads: the clock-type stethoscope head and the disc diaphragm-type stethoscope head are limited to factors such as audible range, complex clinical background and the like, and the contribution of a common stethoscope to timely and accurate diagnosis and treatment is very limited; the special electrocardiogram and phonocardiogram detector has the advantages that the size is large, the operation is complicated, the installation positions of the electrocardio-electrode and the phonocardiogram sensor are fixed, and the electrocardio-electrode and the phonocardiogram sensor are separated from auscultation; the electrocardio-electrode of the dynamic electrocardio-heart sound detector adopts a patch type, the position is fixed, the channel of the phonocardiogram sensor is single, the placing operation is complicated or not firm, the position is limited, and the design defect of an electrocardio-circuit can deal with the insufficient capability of low-frequency-band interference baseline drift, so that the waveform distortion and even the deformity are caused; the heart auscultation sound restored by the digital stethoscope is obvious in distortion, lacks of synchronous tracing of a heart sound picture in an environment of mapping a heart sound picture time domain, and cannot solve the problems of abnormal heart sound identification and murmurmur period positioning. Therefore, the existing cardiac auscultation tool cannot simultaneously meet the requirements of ordinary auscultation and detection of electrocardio sounds, and the detection result is obviously distorted. In addition, the existing heart auscultation tool has fixed detection position, large detection equipment volume and complex operation, and is not beneficial to use.

Disclosure of Invention

Based on this, it is necessary to provide a digital stethoscope to above-mentioned problem, the utility model discloses the purpose is through setting up the auscultation device including ordinary auscultation head, control part and electrocardio heart sound auscultation head, has realized realizing ordinary auscultation through ordinary auscultation head and has realized the effect that shows electrocardio heart sound picture in real time through electrocardio heart sound auscultation head and control part to this digital stethoscope is small, the operation of being convenient for, and it is nimble to detect the position.

In a first aspect, the present application provides a digitized stethoscope comprising: a common auscultation head, a control part and an electrocardio-cardiac sound auscultation head; the common auscultation head is connected with one end of the control part through a screw thread;

the electrocardio-cardiac sound auscultation head comprises: the heart sound stethoscope comprises a heart sound sensor, a first vibrating diaphragm, a positive electrode plate, a negative electrode plate, a reference electrode plate and an electrocardio-heart sound stethoscope head shell; the first vibrating diaphragm is installed at one end of the electrocardio-heart sound auscultation head shell, the positive electrode plate, the negative electrode plate and the reference electrode plate are installed at the edge of the first vibrating diaphragm and located at the position with the largest distance between the positive electrode plate, the negative electrode plate and the reference electrode plate, the heart sound sensor is located at the central position of an accommodating space formed by the electrocardio-heart sound auscultation head shell and the first vibrating diaphragm, and the other end of the electrocardio-heart sound auscultation head shell is mechanically connected with the other end of the control part;

the control section includes: the device comprises a controller, a wireless communication module and a signal processing module; the wireless communication module is electrically connected with the controller, the heart sound sensor, the positive electrode plate, the negative electrode plate and the reference electrode plate are all electrically connected with the signal processing module, and the signal processing module is also electrically connected with the controller.

In one embodiment, the signal processing module includes: the device comprises a heart sound amplifier, an electrocardio amplifier, a level adapter and an analog-to-digital converter;

the heart sound sensor, the heart sound amplifier, the level adapter, the analog-to-digital converter and the controller are electrically connected in sequence;

the positive electrode plate, the negative electrode plate and the reference electrode plate are all electrically connected with the electrocardioamplifier, and the electrocardioamplifier, the level adapter, the analog-to-digital converter and the controller are sequentially and electrically connected.

In one embodiment, the control unit further includes: the keyboard comprises a shell, a key board, a circuit board and a USB interface circuit board;

the controller, wireless communication module heart sound amplifier, electrocardio amplifier, level adapter with analog-to-digital converter all is fixed in on the circuit board, the circuit board with USB interface circuit board is located in the accommodation space of shell body, USB interface circuit board with the controller electricity is connected, USB interface circuit board has USB interface arrangement, USB interface arrangement with the keypad inlays on the shell body.

In one embodiment, the control unit further includes: the device comprises a display module, a key module and a memory;

the display module, the key module and the memory are all fixed on the circuit board, and the display module, the key module and the memory are respectively and electrically connected with the controller.

In one embodiment, the display module comprises: an indicator light and a display screen; the indicator light and the display screen are respectively electrically connected with the controller;

the key sheet includes: a key and indicator light housing; the key is arranged opposite to the key module; the indicator light shell is arranged opposite to the indicator light.

In one embodiment, the control unit further includes: a window screen;

the window screen is embedded on the outer shell, and the display screen and the window screen are arranged oppositely.

In one embodiment, the wireless communication module includes: a bluetooth transmitter.

In one embodiment, the common stethoscope head comprises: a second diaphragm and a common stethoscope head shell;

the second vibrating diaphragm is installed to ordinary auscultation head casing one end, the other end of ordinary auscultation head casing with the one end screw thread of shell body is connected.

In one embodiment, the heart sound sensor is a dual-frequency integrated high-sensitivity heart sound sensor.

In one embodiment, the digital stethoscope further comprises: a listening device;

the listening device is connected with the outer shell through a lead.

Adopt the embodiment of the utility model provides a, following beneficial effect has:

adopt the utility model discloses a digital stethoscope, through set up ordinary auscultation head, control division and electrocardio heart sound auscultation head in digital stethoscope, wherein, electrocardio heart sound auscultation head is provided with heart sound sensor, positive electrode piece, negative electrode piece and reference electrode piece, and install positive electrode piece, negative electrode piece and reference electrode piece in the edge of first vibrating diaphragm and be located the position that the distance is the biggest between two liang, thereby can obtain the biggest electrocardio wave amplitude, and then can obtain more accurate electrocardio wave data through the signal processing module in the control division; meanwhile, the heart sound wave information is collected through the heart sound sensor, and more accurate heart sound wave data can be obtained through a signal processing module in the control part; and then the controller in the control part can transmit received electrocardio wave data and heart sound wave data to the external display equipment connected with the wireless communication module through the wireless communication module, the effect of displaying an electrocardio-phonocardiogram in real time is realized, and the digital stethoscope can also realize the effect of ordinary auscultation through an ordinary stethoscope head, so that the digital stethoscope can simultaneously have the functions of ordinary auscultation and real-time display of the electrocardio-phonocardiogram, and the digital stethoscope is small in size, high in flexibility and convenient to operate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Wherein:

FIG. 1 is a schematic diagram of a digital stethoscope according to an embodiment of the present application;

FIG. 2 is an exploded view of a digital stethoscope according to an embodiment of the present application;

FIG. 3 is a block diagram illustrating the electrical connection relationship between the components of the control unit and the components of the ECG and auscultation head;

FIG. 4 is a block diagram of a signal processing module in the embodiment of FIG. 3;

fig. 5 is another structural block diagram of the electrical connection relationship between each component of the control part and each component of the electrocardiogram and heart sound stethoscope head in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, fig. 1 is a schematic diagram of a digital stethoscope according to an embodiment of the present application, fig. 2 is an exploded view of the digital stethoscope according to the embodiment of the present application, fig. 3 is a block diagram illustrating an electrical connection relationship between each component of a control unit and each component of an electrocardiographic and cardiac sound stethoscope head according to the embodiment of the present application, and the digital stethoscope includes: a common stethoscope head 101, a control part 102 and an electrocardio-cardiac sound stethoscope head 103; the common stethoscope head 101 is connected with one end of the control part 102 through a screw thread; the electrocardiographic heart sound auscultation head 103 includes: the heart sound sensor 114, the first diaphragm 116, the positive electrode sheet 304, the negative electrode sheet 305, the reference electrode sheet 306 and the electrocardio-heart sound auscultation head shell 115; a first diaphragm 116 is mounted at one end of the shell 115 of the electrocardiographic heart sound stethoscope head, the positive electrode plate 304, the negative electrode plate 305 and the reference electrode plate 306 are mounted at the edge of the first diaphragm 116 and are located at the position with the largest distance therebetween, the heart sound sensor 114 is located at the central position of the accommodating space formed by the shell 115 of the electrocardiographic heart sound stethoscope head and the first diaphragm 116, and the other end of the shell 115 of the electrocardiographic heart sound stethoscope head is mechanically connected with the other end of the control part 102; the control unit 102 includes: a controller 301, a wireless communication module 302 and a signal processing module 303; the wireless communication module 302 is electrically connected with the controller 301, the heart sound sensor 114, the positive electrode sheet 304, the negative electrode sheet 305 and the reference electrode sheet 306 are electrically connected with the signal processing module 303, and the signal processing module 303 is also electrically connected with the controller 301.

In an embodiment of the present application, the digital stethoscope includes: the stethoscope comprises a common auscultation head 101, a control part 102 and an electrocardio-cardiac sound auscultation head 103, wherein a doctor uses the common auscultation head 101 during common auscultation, and under the condition that the digital stethoscope is powered off, the doctor can also carry out common auscultation through the common auscultation head 101. Moreover, because the digital stethoscope further comprises the control part 102 and the electrocardio-cardiac sound stethoscope head 103, the common stethoscope head 101 does not need to be replaced, and other diagnosis modes can be realized through the control part 102 and the electrocardio-cardiac sound stethoscope head 103.

Further, the positive electrode sheet 304, the negative electrode sheet 305, and the reference electrode sheet 306 are installed at the edge of the first diaphragm 116 at positions where the distance between each two electrodes is the largest, so that the distance between the electrode sheets is the largest, thereby obtaining the largest amplitude of the electrocardiographic wave. Meanwhile, the heart sound sensor 114 is disposed in the center of the accommodating space formed by the shell 115 of the electrocardiographic heart sound stethoscope head and the first diaphragm 116, and is used for collecting heart sound wave information.

In the embodiment of the application, a common stethoscope head 101, a control part 102 and an electrocardiographic heart sound stethoscope head 103 are arranged in a digital stethoscope, wherein the electrocardiographic heart sound stethoscope head 103 is provided with a heart sound sensor 114, a positive electrode sheet 304, a negative electrode sheet 305 and a reference electrode sheet 306, and the positive electrode sheet 304, the negative electrode sheet 305 and the reference electrode sheet 306 are arranged at the edge of the first diaphragm 116 and are located at the position with the largest distance therebetween, so that the largest electrocardiographic wave amplitude can be obtained, and more accurate electrocardiographic wave data can be obtained through a signal processing module 303 in the control part 102; meanwhile, the heart sound wave information is acquired through the heart sound sensor 114, and more accurate heart sound wave data can be obtained through the signal processing module 303 in the control part 102; and then the controller 301 in the control part 102 can transmit the received electrocardio wave data and the heart sound wave data to the external display device connected with the wireless communication module 302 through the wireless communication module 302, the effect of displaying the electrocardio-phonocardiogram in real time is realized, and the digital stethoscope can also realize the effect of ordinary auscultation through the ordinary stethoscope head 101, so that the digital stethoscope can simultaneously have the functions of ordinary auscultation and real-time display of the electrocardio-phonocardiogram, and the digital stethoscope is small in volume, high in use flexibility and convenient to operate.

Referring to fig. 4, which is a detailed structural block diagram of the signal processing module in the embodiment shown in fig. 3 of the present application, the signal processing module 303 includes: a heart sound amplifier 401, an electrocardio amplifier 402, a level adapter 403 and an analog-to-digital converter 404; the heart sound sensor 114, the heart sound amplifier 401, the level adapter 403, the analog-to-digital converter 404 and the controller 301 are electrically connected in sequence; the positive electrode plate 304, the negative electrode plate 305 and the reference electrode plate 306 are all electrically connected with an electrocardio amplifier 402, and the electrocardio amplifier 402, the level adapter 403, the analog-to-digital converter 404 and the controller 301 are electrically connected in sequence.

In the embodiment of the application, before the heart is mechanically contracted, firstly, electrical excitation is generated, tiny current generated by myocardial excitation can be conducted to the body surface through body tissues, so that different electric potentials are generated at different parts of the body surface, when an electrode plate 117 of an electrocardio-phonocardiography stethoscope head 103 of a digital stethoscope is contacted with the body surface, an electrocardio-amplifier 402 electrically connected with the electrode plate 117 can receive the potential difference between test points of two electrodes picked up by a positive electrode plate 304 and a negative electrode plate 305 when the electrode plate 117 is contacted with the body surface, the electrocardio-signal is characterized in that the signal is very weak, the common electrocardio-frequency is generally between 0.05 and 100Hz, the energy is mainly concentrated near 17Hz, the amplitude is less than 5mV, the impedance of the electrocardio-electrode is larger and generally more than hundreds of kilohms, the electrocardio-amplifier 402 is a single-channel precordial bipolar lead amplifier, and an amplifying circuit of the electrocardio-amplifier 402 is designed and manufactured according to the quality of special machine level, the electrocardiographic wave signal amplified by the electrocardiographic amplifier 402 passes through the level adapter 403 to obtain an amplified and noiseless electrocardiographic wave signal, the level adapter 403 transmits the amplified and noiseless electrocardiographic wave signal to the analog-to-digital converter 404, and the analog-to-digital converter 404 performs analog-to-digital conversion on the received electrocardiographic wave signal.

In this embodiment, the heart sound sensor 114 is a dual-frequency integrated high-sensitivity heart sound sensor, the heart sound sensor 114 is disposed in a central position of an accommodating space formed by the shell 115 of the electrocardiographic heart sound stethoscope head and the first diaphragm 116, and is configured to collect heart sound wave information, and a dual-band output mode of the heart sound sensor 114 is as follows: the central frequency of the low frequency band is 30Hz, the central frequency of the high frequency band is 200Hz, and the respective bidirectional attenuation is reduced as much as possible; two frequency band output ends of the heart sound sensor 114 are electrically connected with a heart sound amplifier 401, the heart sound wave information of the two frequency bands amplified by the heart sound amplifier 401 is transmitted to a level adapter 403, an amplified and noise interference-free heart sound wave signal is obtained after the heart sound wave information passes through the level adapter 403, the level adapter 403 transmits the amplified and noise interference-free heart sound wave signal to an analog-to-digital converter 404, and the analog-to-digital converter 404 performs analog-to-digital conversion on the received heart sound wave signals of the two frequency bands.

The sampling frequency of the analog-to-digital converter 404 is 1000 Hz/channel, and the electrocardiographic wave signals and the heart sound wave signals of two frequency bands are converted by the analog-to-digital converter 404 to form 3 data sets of electrocardiographic, low-frequency heart sound and high-frequency heart sound.

In the embodiment of the application, by providing the signal processing module 303 including the cardiac sound amplifier 401, the cardiac amplifier 402, the level adapter 403 and the analog-to-digital converter 404, the maximum amplitude cardiac electric wave information obtained by the positive electrode plate 304 and the negative electrode plate 305 is amplified by the cardiac amplifier 402, and the level adapter 403 and the analog-to-digital converter 404 are used for debugging and analog-to-digital conversion of the amplified cardiac electric wave information, so that more accurate cardiac electric wave data can be obtained, and an electrocardiographic data group corresponding to the more accurate cardiac electric wave information is obtained; meanwhile, the heart sound sensor 114 collects heart sound wave information of two frequency bands of low-frequency heart sound wave information and high-frequency heart sound wave information, the heart sound amplifier 401 amplifies the heart sound wave information of the two frequency bands and debugs and performs analog-to-digital conversion on the heart sound wave information of the two frequency bands through the level adapter 403 and the analog-to-digital converter 404, more accurate heart sound wave data of the two frequency bands can be obtained, and then a low-frequency heart sound data group and a high-frequency heart sound data group corresponding to the heart sound wave information of the two frequency bands are obtained more accurately.

Referring to fig. 5, which is another structural block diagram of an electrical connection relationship between each component of the control portion and each component of the electrocardiographic and cardiac sound stethoscope head in the embodiment of the present application, the control portion 102 further includes: the shell 106, the key board 107, the circuit board 108 and the USB interface circuit board 113; the controller 301, the wireless communication module 302, the heart sound amplifier 401, the electrocardio amplifier 402, the level adapter 403 and the analog-to-digital converter 404 are all fixed on the circuit board 108, the circuit board 108 and the USB interface circuit board 113 are positioned in the accommodating space of the outer shell 106, the USB interface circuit board 113 is electrically connected with the controller 301, the USB interface circuit board 113 is provided with a USB interface device, and the USB interface device and the key board 107 are embedded on the outer shell 106.

In the embodiment of the present application, the control unit 102 further includes: a display module 501, a key module 203 and a memory 502; the display module 501, the key module 203 and the memory 502 are all fixed on the circuit board 108, and the display module 501, the key module 203 and the memory 502 are respectively electrically connected with the controller 301.

In the embodiment of the present application, after the electrocardiographic data set, the low-frequency heart sound data set, and the high-frequency heart sound data set are acquired and obtained by the electrocardiographic head 103 and the control unit 102, the controller 301 stores the received 3 data sets transmitted by the analog-to-digital converter 404 into the memory 502, the unit time length of the data in the data sets is 15s, and the memory 502 stores, in addition to the electrocardiographic data set, the low-frequency heart sound data set, and the high-frequency heart sound data set, 3 data sets, and also records information such as date, time, auscultation area, paper speed, calibration, and the like corresponding to each of the 3 data sets in 15s, so as to facilitate later calling of related data files.

In the embodiment of the present application, the wireless communication module 302 includes: a bluetooth transmitter. The bluetooth transmitter can carry out wireless communication with all kinds of display devices that have bluetooth receiving arrangement, if: the system comprises a mobile phone, a Pad, a display, a television or a large projection screen, and displays 3 data groups of an electrocardio data group, a low-frequency heart sound data group and a high-frequency heart sound data group in a line graph mode in real time as a 3-channel electrocardio-heart sound graph synchronous with heart auscultation.

It should be noted that, in practical applications, the wireless communication module 302 may also include other types of wireless communication devices besides the bluetooth transmitter for performing wireless communication with various required devices.

Meanwhile, the digital stethoscope can also perform wired communication with an electrocardio-heart sound analysis system supported by personal computer hardware and software in the form of a transmission line through a USB interface device of the USB interface circuit board 113, and complete the import of related data files in the memory 502 and the adjustment and setting of related parameters of the digital stethoscope.

In the embodiment of the present application, the display module 501 includes: an indicator light 111 and a display screen 112; the indicator lamp 111 and the display screen 112 are respectively electrically connected with the controller 301; the key sheet 107 includes: a key 201 and an indicator housing 202; the key 201 is arranged opposite to the key module 203; the indicator housing 202 is disposed opposite to the indicator 111.

In the embodiment of the present application, when the digital stethoscope is started by the power switch key of the keys 201, the indicator lamp 111 lights up; when the auscultation region mode is converted through the auscultation region mode conversion key of the keys 201, the display screen 112 equipped with unit character display displays a code corresponding to the current auscultation region, and the corresponding relationship between the code and the auscultation region is as follows: code a denotes the aortic I auscultation area, code a denotes the aortic II auscultation area, code P denotes the pulmonary valve auscultation area, code M denotes the mitral valve auscultation area, code T denotes the tricuspid valve auscultation area, and code 0 denotes the non-specific auscultation area (default). When the digital stethoscope is operated by the save button of the button 201, the controller 301 of the digital stethoscope stores the received 3 data sets and related data transmitted from the analog-to-digital converter 404 into the memory 502.

In the embodiment of the present application, the control unit 102 further includes: a window screen 110; a window screen 110 is embedded in the outer shell 106, and a display screen 112 is disposed opposite the window screen 110. The protection of the display screen 112 is realized by the arrangement of the window screen 110, and simultaneously, the doctor can conveniently confirm the auscultation region of the current digital stethoscope by observing the code on the display screen 112 when using the digital stethoscope.

In one embodiment, the common stethoscope head 101 includes: a second diaphragm 104 and a common stethoscope head housing 105; the second diaphragm 104 is installed at one end of the general stethoscope head shell 105, and the other end of the general stethoscope head shell 105 is connected with one end of the outer shell 106 through a screw thread.

In one embodiment, the digital stethoscope further comprises: a listening device 118; listening device 118 is connected to outer housing 106 by wires 119.

In one embodiment, the control unit 102 further comprises: a power supply unit 109, wherein the power supply unit 109 may be a battery, a rechargeable battery or a power supply unit with a connection line connected to an external power source, and the specific form of the power supply unit 109 is not limited herein, and the power supply unit 109 is used for supplying power to the digital stethoscope.

In one embodiment, the digital stethoscope is specifically applied in the following scenarios: when a doctor diagnoses a patient by using the digital stethoscope, the doctor starts the digital stethoscope through a power switch key in the key 201, and meanwhile, a Bluetooth transmitter in a wireless communication module 302 in the digital stethoscope is in wireless communication connection with a large screen display hung on the wall of a consulting room. A doctor firstly uses a common stethoscope head 101 of the digital stethoscope to examine a patient, when the doctor smells arrhythmia in a nonspecific auscultation area in front of the chest of the patient, the electrocardio-heart sound stethoscope head 103 of the digital stethoscope is immediately placed in front of the chest of the patient, a large screen display hung on the wall of a consulting room immediately displays an electrocardio-heart sound picture of the patient in real time, and the doctor can diagnose the patient according to the electrocardio-heart sound picture.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A digitized stethoscope, comprising: a common auscultation head, a control part and an electrocardio-cardiac sound auscultation head; the common auscultation head is connected with one end of the control part through a screw thread;

2. The digitized stethoscope according to claim 1, wherein said signal processing module comprises: the device comprises a heart sound amplifier, an electrocardio amplifier, a level adapter and an analog-to-digital converter;

3. The digitized stethoscope according to claim 2, wherein said control portion further comprises: the keyboard comprises a shell, a key board, a circuit board and a USB interface circuit board;

4. The digitized stethoscope according to claim 3, wherein said control portion further comprises: the device comprises a display module, a key module and a memory;

5. The digitized stethoscope according to claim 4, wherein said display module comprises: an indicator light and a display screen; the indicator light and the display screen are respectively electrically connected with the controller;

6. The digitized stethoscope according to claim 5, wherein said control portion further comprises: a window screen;

7. The digitized stethoscope according to claim 1, wherein said wireless communication module comprises: a bluetooth transmitter.

8. The digitized stethoscope according to claim 3, wherein said common stethoscope head comprises: a second diaphragm and a common stethoscope head shell;

9. The digitized stethoscope according to claim 1, wherein said heart sound sensor is a dual-frequency integrated high-sensitivity heart sound sensor.

10. The digitized stethoscope according to claim 3, further comprising: a listening device;

the listening device is connected with the outer shell through a lead.