CN111544031A - Electronic stethoscope and system for monitoring respiratory sound and lung respiratory function - Google Patents
Electronic stethoscope and system for monitoring respiratory sound and lung respiratory function Download PDFInfo
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- CN111544031A CN111544031A CN202010492274.2A CN202010492274A CN111544031A CN 111544031 A CN111544031 A CN 111544031A CN 202010492274 A CN202010492274 A CN 202010492274A CN 111544031 A CN111544031 A CN 111544031A
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- electronic stethoscope
- circuit board
- stethoscope
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 208000037656 Respiratory Sounds Diseases 0.000 title claims abstract description 10
- 210000004072 lung Anatomy 0.000 title claims abstract description 10
- 230000004202 respiratory function Effects 0.000 title claims abstract description 9
- 238000005192 partition Methods 0.000 claims abstract description 4
- 238000002555 auscultation Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 6
- 230000006870 function Effects 0.000 claims description 5
- 238000010801 machine learning Methods 0.000 claims description 5
- 230000002685 pulmonary effect Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 241000711573 Coronaviridae Species 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010025102 Lung infiltration Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002612 cardiopulmonary effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
- A61B7/04—Electric stethoscopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/003—Detecting lung or respiration noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Life Sciences & Earth Sciences (AREA)
- Signal Processing (AREA)
- Medical Informatics (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention is suitable for the technical field of medical equipment, and provides an electronic stethoscope and a system for monitoring respiratory sounds and lung respiratory functions, wherein the stethoscope comprises a shell, a clamping ring, a piezoelectric film sensor, a partition plate, a balancing weight, a circuit board and a rechargeable battery, the system comprises the electronic stethoscope, a medical Bluetooth earphone and an upper computer, when in use, a doctor only wears the medical Bluetooth earphone connected with the stethoscope, pastes the bottom surface of the electronic stethoscope on a part to be auscultated, can realize long-time continuous monitoring, and additionally assists the upper computer in use, can monitor acquired data, and gives an alarm prompt when a threshold value is exceeded.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to an electronic stethoscope and system for monitoring respiratory sounds and lung respiratory functions.
Background
Under the trend of new coronavirus epidemic infection worldwide in 2020, the new coronavirus is characterized by lung infiltration, so that the new coronavirus is an effective rescue for new coronary patients, and improvement of diagnosis and treatment means, particularly respiratory sound and lung respiratory function monitoring, are particularly necessary. The existing stethoscope is connected through a connecting pipe, the auscultation accuracy is not high, real-time monitoring cannot be achieved, and the application range is limited. And professional cardiopulmonary monitoring equipment is high in cost and not beneficial to product popularization.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide an electronic stethoscope and system for monitoring respiratory sounds and pulmonary respiratory function, which solves the above problems.
The invention adopts the following technical scheme:
electronic stethoscope of function monitoring is breathed to sound of breathing and lung includes the casing, casing bottom card is gone into there is the snap ring, the piezoelectric film sensor who has arranged the encapsulation on the snap ring, be equipped with the round in the casing and keep off the ring, keep off and install the baffle on the ring, be fixed with balancing weight, circuit board and rechargeable battery on the baffle, balancing weight, circuit board and rechargeable battery's whole focus is located the baffle central point and puts, the circuit board embeds there is bluetooth module, casing top lock has the top cap, the top cap center is equipped with the display screen, piezoelectric film sensor, display screen, rechargeable battery all are connected to the circuit board.
Furthermore, a wire hole is formed in one side, close to the circuit board, of the partition board, a foot seat is arranged on the circuit board, a pin is arranged at the tail end of a connecting wire of the piezoelectric film sensor, and the pin penetrates through the wire hole and then is inserted into the foot seat.
Further, the circuit board further comprises a pre-amplification circuit, a filtering amplification circuit, an AD conversion circuit, a central processing unit, a DA conversion circuit and a secondary amplification circuit which are connected in sequence, the foot base is connected to the pre-amplification circuit, the Bluetooth module is connected to the secondary amplification circuit, and the display screen is connected to the central processing unit.
Furthermore, the electronic stethoscope for monitoring the respiratory sound and the lung respiratory function further comprises a protective shell, and the protective shell is screwed into the bottom surface of the top cover.
On the other hand, the electronic auscultation system comprises the electronic stethoscope and a medical Bluetooth headset, wherein the medical Bluetooth headset is connected with the electronic stethoscope in a Bluetooth mode.
Further, the electronic auscultation system still includes the host computer, the circuit board still includes data interface, through data interface the electronic stethoscope with the host computer is connected, the host computer is including the data receiving module, machine learning module, comparison module and the module of reporting an emergency and asking for help or increased vigilance that connect in order.
The invention has the beneficial effects that: the electronic stethoscope provided by the invention has a small structure, each part can be detached, and the piezoelectric film sensor is adopted, compared with the traditional piezoelectric materials such as piezoelectric ceramics and quartz, the piezoelectric film material has the advantages of high piezoelectric coefficient, good flexibility, corrosion resistance and wide frequency response range, so that the data acquisition of the stethoscope is more accurate.
Drawings
FIG. 1 is a block diagram of an electronic stethoscope according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a circuit board;
FIG. 3 is an enlarged view of a portion of FIG. 1;
fig. 4 is a schematic diagram of an electronic auscultation system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 illustrates a structure of an electronic stethoscope provided by an embodiment of the present invention, and only portions related to the embodiment of the present invention are illustrated for convenience of explanation.
As shown in fig. 1, the electronic stethoscope of function monitoring is breathed to sound of breathing and lung that this embodiment provided includes casing 1, 1 bottom card of casing is gone into there is snap ring 2, arrange packaged piezoelectric film sensor 3 on the snap ring 2, be equipped with the round in the casing 1 and keep off ring 4, keep off and install baffle 5 on the ring 4, be fixed with balancing weight 6, circuit board 7 and rechargeable battery 8 on the baffle 5, balancing weight 5, circuit board 7 and rechargeable battery 8's whole focus is located 5 central points of baffle and puts, circuit board 7 embeds there is bluetooth module, 1 top lock of casing has top cap 9, top cap 9 center is equipped with display screen 91, piezoelectric film sensor 3, display screen 91, rechargeable battery 8 all are connected to circuit board 7.
In the above structure, in order to facilitate disassembly and assembly, as shown in fig. 2, a wire hole 51 is formed on one side of the partition board 5 close to the circuit board, a foot seat 71 is formed on the circuit board 7, a pin 31 is arranged at a terminal of a connecting wire of the piezoelectric film sensor 3, and the pin 31 is inserted into the foot seat 71 after passing through the wire hole.
In this embodiment, can directly buckle down the top cap, then pull down the connecting wire of circuit board and display screen, can take off the top cap, then take off and participate in, take off rechargeable battery and circuit board, expose the piezoelectric film sensor of bottom, outwards release the snap ring from the border position, can pull down whole piezoelectric film sensor. This structure individual part is independent setting, the reduce cost of being convenient for, if the piezoelectric film sensor breaks down, direct change can, need not to scrap whole stethoscope, avoid extravagant.
As shown in fig. 3, the circuit board 7 further includes a pre-amplifier circuit 72, a filter amplifier circuit 73, an AD converter circuit 74, a central processing unit 75, a DA converter circuit 76, and a secondary amplifier circuit 77, which are connected in sequence, the socket is connected to the pre-amplifier circuit 72, the bluetooth module (marked as 70 in the figure) is connected to the secondary amplifier circuit 77, and the display screen 91 is connected to the central processing unit 75.
Compared with the traditional piezoelectric materials such as piezoelectric ceramics and quartz, the PVDF piezoelectric film material in the PVDF piezoelectric film sensor has the characteristics of high piezoelectric coefficient, good flexibility, corrosion resistance, wide frequency response range (10 < -5 > -5X 108Hz) at room temperature and the like, and can improve the detection accuracy. The bottom surface of the piezoelectric film sensor is made of conductive adhesive, and the piezoelectric film sensor is stuck to the surface of the skin of a human body, so that contact discomfort can be effectively reduced, and the piezoelectric film sensor is prevented from slipping off. The pre-amplification circuit and the filtering amplification circuit mainly amplify and filter signals, so that the sensitivity of the signals is improved. The analog signals are quickly converted into digital signals, so that filtering analysis and high-performance transmission of the signals are facilitated. The AD conversion circuit adopts an AD9280 chip, the effective digit is 8bit, the highest conversion speed is 32MSPS, and a direct current reset function is built in. The chip is powered by a single power supply from +2.7V to +5.5V, the low power consumption requirement in high-speed sampling is met, the power consumption is only 95mW under the power supply of +3V, and the power consumption is only 5mW under the sleep mode.
In addition, the electronic stethoscope further comprises a protective shell 10, and the protective shell 10 is screwed into the bottom surface of the top cover 9. When need not to use the electron stethoscope, directly twist the protective housing, avoid piezoelectric film sensor and external contact to damage.
The embodiment further provides an electronic auscultation system, as shown in fig. 4, including the electronic stethoscope 100 and a medical bluetooth headset 200, where the medical bluetooth headset 200 is bluetooth connected to the electronic stethoscope 100. The electronic stethoscope provided by the invention has a small structure, each part can be detached, the piezoelectric film sensor is adopted, and compared with the traditional piezoelectric materials such as piezoelectric ceramics and quartz, the piezoelectric film material has the advantages of high piezoelectric coefficient, good flexibility, corrosion resistance and wide frequency response range, so that the data acquisition of the stethoscope is more accurate.
Further, the electronic auscultation system further comprises an upper computer 300, the circuit board further comprises a data interface 78, the electronic stethoscope 100 is connected with the upper computer 300 through the data interface 78, and the upper computer 300 comprises a data receiving module 301, a machine learning module 302, a comparison module 303 and an alarm module 304 which are connected in sequence. The machine learning module 302 monitors useful signals through learning of individual breath sounds, thereby filtering noise generated by movement of a patient and the surrounding environment and timely reminding of the change of the breath sounds caused by causes.
This preferred mode auxiliary use host computer can monitor the data collection, gives the suggestion of reporting an emergency and asking for help or increased vigilance when surpassing the threshold value, and this product is with low costs, is favorable to the product to be popularized. The piezoelectric film sensor can be attached to the skin surface to monitor the breathing sound in real time, and the collected signals are filtered through a peripheral circuit and transmitted to the Bluetooth headset, so that a doctor can judge the signals conveniently. Meanwhile, the breathing data can be transmitted to an upper computer, and machine learning can be carried out according to individual historical breathing conditions, so that objective data analysis can be carried out on the breathing conditions of the patient.
In summary, the invention provides a stethoscope with high sensitivity, long-distance transmission and real-time monitoring, which can attach a stethoscope sensor to the skin surface to collect breath sounds and heart sounds, transmit the breath sounds and the heart sounds to a bluetooth headset end worn by a doctor in advance through bluetooth, or directly transmit the breath sounds and the heart sounds to an upper computer, set a threshold value to provide emergency warning, and thereby effectively monitor the state of illness of a patient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides an electronic stethoscope of function monitoring is breathed to sound of breathing and lung, a serial communication port, which comprises a housin, casing bottom card is gone into there is the snap ring, the piezoelectric film sensor who encapsulates has been arranged on the snap ring, it keeps off the ring to be equipped with the round in the casing, keep off and install the baffle on the ring, be fixed with balancing weight, circuit board and rechargeable battery on the baffle, balancing weight, circuit board and rechargeable battery's whole focus is located the baffle central point and puts, the circuit board embeds there is bluetooth module, casing top lock has the top cap, the top cap center is equipped with the display screen, piezoelectric film sensor, display screen, rechargeable battery all are connected to the circuit board.
2. The electronic stethoscope for monitoring respiratory sounds and pulmonary respiratory functions as defined in claim 1, wherein said partition board has a wire hole on one side thereof near said circuit board, said circuit board has a foot seat, said piezoelectric film sensor has a pin at the end of a connecting wire thereof, and said pin is inserted into said foot seat after passing through said wire hole.
3. The electronic stethoscope for monitoring breath sounds and lung breath functions according to claim 2, wherein said circuit board further comprises a pre-amplifier circuit, a filter amplifier circuit, an AD converter circuit, a central processing unit, a DA converter circuit, and a secondary amplifier circuit, which are connected in sequence, said base is connected to said pre-amplifier circuit, said bluetooth module is connected to said secondary amplifier circuit, and said display screen is connected to said central processing unit.
4. The electronic stethoscope for monitoring respiratory sounds and pulmonary respiratory function of any one of claims 1-3, wherein said electronic stethoscope further comprises a protective shell, said protective shell being threaded into said bottom surface of said top cover.
5. An electronic auscultation system, characterized in that, the electronic auscultation system includes the electronic stethoscope as set forth in any one of claims 1-4, and further includes medical bluetooth headset, the medical bluetooth headset is bluetooth connected with the electronic stethoscope.
6. The electronic auscultation system of claim 5, further comprising an upper computer, wherein the circuit board further comprises a data interface, the electronic stethoscope is connected with the upper computer through the data interface, and the upper computer comprises a data receiving module, a machine learning module, a comparison module and an alarm module which are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492274.2A CN111544031A (en) | 2020-06-03 | 2020-06-03 | Electronic stethoscope and system for monitoring respiratory sound and lung respiratory function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492274.2A CN111544031A (en) | 2020-06-03 | 2020-06-03 | Electronic stethoscope and system for monitoring respiratory sound and lung respiratory function |
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| Publication Number | Publication Date |
|---|---|
| CN111544031A true CN111544031A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010492274.2A Pending CN111544031A (en) | 2020-06-03 | 2020-06-03 | Electronic stethoscope and system for monitoring respiratory sound and lung respiratory function |
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| CN (1) | CN111544031A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112617886A (en) * | 2020-12-14 | 2021-04-09 | 华中科技大学 | Wearable wireless auscultation device |
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2020
- 2020-06-03 CN CN202010492274.2A patent/CN111544031A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112617886A (en) * | 2020-12-14 | 2021-04-09 | 华中科技大学 | Wearable wireless auscultation device |
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