CN111297393A - Electronic stethoscope based on piezoelectric film sensor - Google Patents
Electronic stethoscope based on piezoelectric film sensor Download PDFInfo
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- CN111297393A CN111297393A CN202010143084.XA CN202010143084A CN111297393A CN 111297393 A CN111297393 A CN 111297393A CN 202010143084 A CN202010143084 A CN 202010143084A CN 111297393 A CN111297393 A CN 111297393A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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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
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Signal Processing (AREA)
- Pulmonology (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The invention provides an electronic stethoscope based on a piezoelectric film sensor, which comprises a sound pickup part and a holding part, wherein the sound pickup part comprises the piezoelectric film sensor for collecting and converting to generate electronic signals representing acoustic vibration and a common chamber for increasing sound pickup; the holding part comprises a control unit, a display unit and an energy storage unit, wherein the control unit is used for controlling sound collection and receiving electronic signals representing acoustic vibration to perform data analysis to obtain an analysis result, the display unit is used for displaying information according to the analysis result, and the energy storage unit is used for providing electric energy for the control unit, the sensor and the display unit; wherein the sound collecting part is detachably connected with the holding part. This electron stethoscope is optimized to digital stethoscope for its structure is when convenient to use person grips and avoids contacting with the patient more, still is favorable to operating personnel to carry out follow-up cleaning.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an electronic stethoscope based on a piezoelectric film sensor.
Background
The respiratory sound is commonly called lung sound, and can reflect the acoustic characteristics of lung tissues, trachea, chest wall and other propagation media. Accurate analysis and classification of the respiratory sound signals can play an important decisive role in the diagnosis of respiratory diseases. In the diagnostic standard, pulmonary rale (moist rale and hydrovorous) has important significance for the diagnosis of pneumonia. Compared with other detection equipment, the stethoscope not only can directly, simply, quickly, accurately and effectively acquire disease information, but also has the advantages of low price, non-invasiveness, no radioactivity, repeatability and the like. Therefore, as one of the most commonly used clinical diagnostic tools for diseases, stethoscopes are widely used to assist in diagnosing diseases such as heart respiration and vascular systems. However, the mechanical stethoscope currently and generally used in clinic has many disadvantages, such as the auscultation effect is easily affected by many human factors and environmental factors, such as environmental noise, patient's fitness, and the level of the auscultator, so that the auscultation result is biased, even misdiagnosis is generated, and the clinician cannot timely grasp and judge the change of the patient's condition in combination with the changes of the breathing sound and heart murmur. In addition, the auscultation of the breath sound and the heart murmur is utilized to diagnose the lung diseases, so that the method is harmless to the human body and very convenient. Therefore, in the present day with increasingly tense relationships between doctors and patients, the stethoscope should play a greater role.
With the rapid development of electronic technology, the application and popularization of modern intelligent products lay a foundation for the research and development of electronic stethoscopes from the next 20 th century to the 21 st century. For example, model 3200 electronic stethoscope manufactured by 3MTM Littmann, usa, and Thinklabs One electronic stethoscope manufactured by Thinklabs, usa, etc. Compared with the traditional mechanical stethoscope, the auscultation process of the mechanical stethoscope is mainly determined based on personal experience, and results obtained by different people have certain difference and are not suitable for standardized operation. The electronic stethoscope can detect weak sound waves, can visualize sounds at the same time, and stores auscultated sounds for a plurality of people to jointly analyze and study. The above-mentioned foreign digital stethoscope, however, is designed substantially based on the usage habits of foreign countries, as disclosed in patent 201380069274.X, which provides an electronic stethoscope pick-up head comprising an acoustic-to-electric transducer disposed within a chamber, the transducer being configured to generate an electronic signal representative of acoustic vibrations, wherein the chamber further comprises a sound-influencing bell defining a cavity to provide air communication between the transducer and a diaphragm connected to an outer end of the bell, wherein the diaphragm is acoustically separated from the transducer; the pickup head also includes one or more vent air paths as the only way to provide air communication between the cavity and the exterior of the chamber, wherein the air paths are configured to restrict air flow through the air paths. Which enhances the clarity of the picked-up sound by increasing the air path, mainly by improving the chamber structure. However, the inside of the pickup head is used for picking up sound by using a microphone, and the sound loss caused by the picking-up process affects the diagnosis result. Meanwhile, according to medical research, as much as 90 percent of stethoscopes have infectious bacteria, and the pick-up head is small in structure and inconvenient to hold, so that a user can easily contact with the body of a patient in the using process, and secondary infection of the bacteria can be caused.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the problems that the auscultation standards of the existing mechanical stethoscope are not uniform, a brand-new digital stethoscope is adopted for replacing the existing mechanical stethoscope, and the digital stethoscope is optimized, so that the structure of the mechanical stethoscope is more convenient for a user to hold and avoid contacting with a patient, and meanwhile, the mechanical stethoscope is beneficial to the subsequent cleaning work of operators.
(II) technical scheme
The electronic stethoscope based on the piezoelectric film sensor provided by one embodiment of the invention comprises a sound collecting part and a holding part,
the sound pickup part comprises a piezoelectric film sensor for collecting and converting to generate an electronic signal representing acoustic vibration and a common chamber for increasing sound pickup;
the holding part comprises a control unit, a display unit and an energy storage unit, wherein the control unit is used for controlling sound collection and receiving electronic signals representing acoustic vibration to perform data analysis to obtain an analysis result, the display unit is used for displaying information according to the analysis result, and the energy storage unit is used for providing electric energy for the control unit, the sensor and the display unit;
wherein the sound collecting part is detachably connected with the holding part.
In one aspect, the pick-up portion pick-up surface is at an angle of 14 ° to the axis of the grip portion.
In one aspect, the sound collecting part is connected with the holding part through a bolt, the sound collecting part is provided with a convex insertion end at the connecting end with the holding part, the holding part is provided with a concave fixed end matched with the insertion end in structure at the connecting end with the sound collecting part, the insertion end is provided with a through hole, a bolt hole matched with the through hole and internally provided with a thread is arranged at the position corresponding to the fixed end, and the sound collecting part and the holding part are connected through the bolt.
On one hand, the sound collecting part is connected with the holding part in a plug-and-socket manner, a convex insertion end is arranged at the connecting end of the sound collecting part and the holding part, a concave fixed end matched with the insertion end in structure is arranged at the connecting end of the holding part and the sound collecting part, and a buckle body for fixing the sound collecting part and the holding part is arranged on the insertion end or/and the fixed end.
On the one hand, the pickup part collection face adopts circular structure, and the diaphragm is the diaphragm of circular silica gel material among the piezoelectric film sensor, and the diaphragm diameter is 40mm, fixes the diaphragm in pickup part's common cavity top through outside casing or silica gel cover to expose the collection face that the diameter is 35 mm.
On one hand, the energy storage unit is positioned inside the holding part and comprises a battery compartment and a battery, the battery and the battery compartment are connected in a detachable or non-detachable mode, and the battery is arranged in the battery compartment and provides electric energy for the control unit through the battery compartment.
In one aspect, the display unit is embedded in a surface of the grip portion.
In one aspect, the control unit comprises a control chip arranged inside the holding part and a key control unit embedded in the surface of the holding part, wherein the key control unit at least comprises a mode switching key, a volume adjustment "+", "-" key, a communication transmission key and a stethoscope switch key.
On one hand, the grip portion further comprises a wireless and/or wired transmission module, a storage module and a listening module, wherein the wireless and/or wired transmission module, the listening module and the storage module are all connected with the control unit, the wireless and/or wired transmission module can be connected with the control unit in a wireless or wired mode to transmit the analysis result and the electronic signals of the acoustic vibration outwards, the storage module is used for storing the analysis result and the electronic signals of the acoustic vibration, and the listening module is used for converting the electronic signals of the acoustic vibration to be played.
In one aspect, the listening module comprises at least one of a wired headset, a wireless headset, and a speaker.
(III) advantageous effects
Firstly, the electronic stethoscope based on the piezoelectric film sensor provided by the invention adopts the data acquisition module to perform vibration collection and conversion to generate a form of conveniently recording and analyzing electronic signals, so that the electronic signals acquired by the digital stethoscope each time can be uniformly stored and analyzed, an accumulation basis is established for a subsequent big data analysis model, and meanwhile, the electronic signals are visual quantifiable data, thereby facilitating standardized diagnosis;
secondly, the electronic stethoscope based on the piezoelectric film sensor optimizes the structure of the sound pickup part, the electronic stethoscope comprises a diaphragm, the diameter of the diaphragm is limited to be 40mm, an included angle of 14 degrees is formed between the sound pickup part collection surface and the axis of the holding part, the size of the diaphragm is limited to better collect data, the diaphragm, the sensor and the common cavity are also designed to more accurately collect sound, and the included angle is designed to facilitate the force of the diaphragm to be contacted with a patient when the diaphragm is held by the user and is prevented from being contacted with the patient;
thirdly, the electronic stethoscope based on the piezoelectric film sensor is detachably connected with the holding part, so that a user can conveniently disinfect and clean the sound pickup part;
finally, the electronic stethoscope based on the piezoelectric film sensor is provided with a control unit inside, can directly analyze the acquired electronic signals, and can display the analysis result by using a display unit, so that a patient can know the result after measurement.
Drawings
FIG. 1 is a front view of an electronic stethoscope based on a piezoelectric film sensor according to the present invention;
FIG. 2 is a side view of an electronic stethoscope based on piezoelectric film sensors according to the present invention;
FIG. 3 is a cross-sectional view of an electronic stethoscope based on a piezoelectric film sensor according to the present invention;
fig. 4 is a disassembled view of the electronic stethoscope based on the piezoelectric film sensor provided by the invention.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In one embodiment, the present invention provides an electronic stethoscope based on a piezoelectric film sensor 11, which comprises a sound collecting part 1 and a holding part 2, wherein the sound collecting part 1 can be used on the surface of the body of a patient for collecting vibration and converting the vibration into an electronic signal, the signal is transmitted to a control unit 22 through a wire and then transmitted outwards, the holding part 2 can be held in the hand of a doctor or a detection person for adjusting the contact position of the sound collecting part 1, the inside of the holding part is used for receiving the electronic signal and obtaining an analysis result through analysis, the display unit 21 is used for displaying the analysis result, and the energy storage unit 23 is used for providing electric energy.
The sound-collecting part 1 comprises a piezoelectric film sensor 11 for collecting and converting to generate an electronic signal representing acoustic vibration and a common chamber 113 for increasing sound-collection.
In another aspect, the whole sound pickup portion 1 is generally in a garlic-shaped design, wherein the contact surface of the sound pickup portion 1 with the patient is in a circular cake-shaped structure, and the outer shell is made of medical grade resin. And the face of contact with the patient adopts the design of openable lid column structure 12, can adopt buckle connection or threaded connection between the two for the user can realize the separation of lid column structure 12 and casing through the mode of rotatory lid column structure 12 or opening the buckle, so that the user carries out the maintenance of diaphragm 111 change, disinfection and sterilization process or equipment. And the cover-shaped structure 12 adopts a design with a hollow middle part, so that the membrane 111 can be directly contacted with the skin of the patient.
And the sound-collecting part 1 comprises a cover-shaped structure 12, a diaphragm 111, a transducer 112 and a common chamber 113 for enclosing the transducer 112 from the outside to the inside in sequence from the contact surface with the patient. Wherein only the peripheral fixing parts of the diaphragm 111 are in contact with the common chamber 113, ensuring that the diaphragm 111 has a sufficient vibration space. The diaphragm 111 in the piezoelectric thin film sensor 11 is a circular diaphragm 111 made of silica gel, the diameter of the diaphragm 111 is 40mm, the diaphragm 111 is fixed above the common cavity 113 of the sound collecting part 1 through an external shell or a silica gel sleeve, and a collecting surface with the diameter of 35mm is exposed, that is, a hollow part in the middle of the cover-shaped structure 12 is a circular structure with the diameter of 35 mm.
Meanwhile, the holding part 2 comprises a control unit 22 for controlling the collection of sound and receiving an electronic signal representing acoustic vibration to perform data analysis to obtain an analysis result, a display unit for displaying information according to the analysis result, and an energy storage unit 23 for providing electric energy for the control unit 22, the sensor and the display unit.
The whole holding part 2 generally adopts a long strip structure, such as a cylinder and a strip, preferably, the holding part 2 adopts a columnar structure constructed by rectangles with semicircular front and back ends, the front and back sides adopt a planar design, so that the display unit can be conveniently viewed and the key control unit 22 can be conveniently operated, and a plurality of external connection interfaces can be arranged on two sides of the holding part 2. Such as a USB interface for data transmission of the control unit 22, a charging interface of the energy storage unit 23, a 3.5mm earphone interface for speaker output, or integrated with the USB interface.
On the other hand, the energy storage unit 23 is located inside the holding portion 2, and includes a battery compartment 231 and a battery 232, and the battery 232 and the battery compartment 231 are detachably or non-detachably connected. Adopt detachable connection, preferably battery compartment 231 imbeds in the portion 2 that grips, and the closed surface then adopts the disconnect-type design, and the closed surface matches with the portion 2 shell that grips, and the two adopts the buckle to connect, and the design structure that needs installation external battery 232 is used like daily. The corresponding battery 232 is an external battery 232. And adopt non-detachable connection, preferably in battery compartment 231 completely sets up the portion 2 of gripping, its battery 232 adopts lithium cell 232 to increase battery 232 management chip, be convenient for follow-up safe charging or increase wireless charging coil and corresponding battery 232 management chip and make things convenient for its follow-up charging outside battery compartment 231. Wherein the charging port may be provided at the side of the grip portion 2. The battery 232 is disposed in the battery compartment 231, and the control unit 22 is supplied with electric power through the battery compartment 231.
On the other hand, the display unit 21 is embedded in the surface of the grip portion 2. The display screen of the display unit 21 has a variety of options including, but not limited to, the following: LCD screen, LED screen, OLED screen, IPS screen.
On the other hand, the control unit 22 includes a control chip 221 disposed inside the holding portion 2 and a key control unit 222 embedded in the surface of the holding portion 2, and the key control unit 222 at least includes a mode switching key, a volume adjustment "+", "-" key, a communication transmission key, and a stethoscope switch key. The key control unit 222 is disposed on the front surface of the grip 2, i.e. the surface opposite to the surface contacting the sound pickup portion 1. Preferably, the key control unit 222 is disposed at a position lower than the front of the grip 2, so that the operator does not make a wrong touch during the holding of the digital stethoscope.
On the other hand, the grip portion 2 further comprises a wireless and/or wired transmission module, a storage module and a listening module, wherein the wireless and/or wired transmission module, the listening module and the storage module are all connected with the control unit 22, the wireless and/or wired transmission module can be connected with a wireless or wired mode to transmit the analysis result and the electronic signal of the acoustic vibration outwards, the storage module is used for storing the analysis result and the electronic signal of the acoustic vibration, and the listening module is used for converting the electronic signal of the acoustic vibration to be played.
The wireless transmission module can adopt one or more combinations of connection modes of a Bluetooth device, WIFI, GPRS, 3G, 4G, 5G, ZigBee and NB-IOT. And the listening module comprises at least one of a wired earphone, a wireless earphone and a loudspeaker. Preferably, the listening module comprises a small speaker inside the grip 2, facilitating the electronic signals or analysis results received directly by the operator from the outside. Add external interface or wireless module simultaneously on the built-in audio chip of speaker, external interface is used for linking to each other with wired earphone, makes things convenient for operating personnel to listen to under the environment that is noisy, and wireless module select support bluetooth agreement can for pair so that listen to with wireless earphone.
Meanwhile, the sound collecting part 1 and the holding part 2 are detachably connected.
In one embodiment, the sound collecting part 1 is connected with the holding part 2 by bolts, the sound collecting part 1 is provided with a convex inserting end 13 at the connecting end with the holding part 2, the holding part 2 is provided with a concave fixed end 24 matched with the inserting end 13 in structure at the connecting end with the sound collecting part 1, a through hole is arranged on the inserting end 13, a bolt hole matched with the through hole and internally provided with threads is arranged at the position corresponding to the fixed end 24, and the sound collecting part 1 and the holding part 2 are connected by bolts.
The sound collecting part 1 is mainly of a garlic-shaped structure, the tail part of the sound collecting part is just provided with a convex inserting end 13, the holding part 2 is of a columnar structure with semicircular rectangular two ends on the front side and the back side, the reverse side of the holding part is provided with a concave fixed end 24, the sound collecting part and the fixed end can be connected through a bolt, namely, the bottom surface of the inserting end 13 of the sound collecting part 1 is provided with a through hole, the corresponding fixed end 24 is provided with a threaded hole with threads, an operator can see the through hole after taking out the cover-shaped structure 12, the piezoelectric film sensor 11 and the common cavity 113, and the fixing between the two can be realized by inserting and screwing. Because the two adopts detachable connection to cause can not adopt traditional line between piezoelectric film sensor 11 and the control unit 22, need add connecting portion between the two between pickup portion 1 and the portion of gripping 2, this connected mode also can adopt the mode of 3.5mm earphone interface, piezoelectric film sensor 11 is the metal strip that sets up on insertion end 13 is inserted to pickup portion 1 through the line connection promptly, and the control unit 22 passes through the metal strip that the line connection set up on stiff end 24 in the portion of gripping 2, the transmission of signal has been realized in two metal strip contacts.
In another embodiment, the sound collecting part 1 and the holding part 2 are connected by a plug-and-socket type, the sound collecting part 1 is provided with a convex inserting end 13 at the connecting end with the holding part 2, the holding part 2 is provided with a concave fixing end 24 matched with the inserting end 13 in structure at the connecting end with the sound collecting part 1, and a fastening body is arranged on the inserting end 13 or/and the fixing end 24 for fixing the two.
The sound collecting part 1 is a garlic-shaped structure, wherein the tail part is just provided with a convex inserting end 13, the holding part 2 is a columnar structure with semicircular rectangular two ends on the front and back sides, the back side of the holding part is provided with a concave fixed end 24, a connecting mode similar to a 3.5mm earphone interface can be adopted between the front and back sides, the convex inserting end 13 is provided with a plurality of annular grooves, the concave fixed end 24 is provided with a matched number of bulges on corresponding positions, and the annular grooves and the bulges form a fixed buckle body. The bottom surface of the annular groove can be surrounded by soft waterproof materials such as rubber or silica gel, the protrusions can be annular protrusions or symmetrical multi-point protrusions, and the protrusions are made of hard materials. Because the two adopts detachable connection to cause can not adopt traditional line between piezoelectric film sensor 11 and the control unit 22, need add connecting portion between the two between pickup portion 1 and the portion of gripping 2, this connected mode also can adopt the mode of 3.5mm earphone interface, piezoelectric film sensor 11 is on the annular metal strip of line connection setting on the insertion end 13 is inserted to pickup portion 1 promptly, annular metal strip and annular groove dislocation are arranged, and the protruding strap that the control unit 22 set up on stiff end 24 is connected through the line in the portion of gripping 2, utilize strap cooperation annular groove time limit buckle to connect, the transmission of signal has been realized with the metal strip contact to the strap simultaneously.
In another embodiment, the sound-collecting part 1 and the holding part 2 are matched by adopting a bolt connection and a plug-and-socket connection, namely, the two schemes are combined together for use.
In summary, the above embodiments are not intended to be limiting embodiments of the present invention, and modifications and equivalent variations made by those skilled in the art based on the spirit of the present invention are within the technical scope of the present invention.
Claims (10)
1. Electronic stethoscope based on piezoelectric film sensor, including sound collecting part and the portion of gripping, its characterized in that:
the sound pickup part comprises a piezoelectric film sensor for collecting and converting to generate an electronic signal representing acoustic vibration and a common chamber for increasing sound pickup;
the holding part comprises a control unit, a display unit and an energy storage unit, wherein the control unit is used for controlling sound collection and receiving electronic signals representing acoustic vibration to perform data analysis to obtain an analysis result, the display unit is used for displaying information according to the analysis result, and the energy storage unit is used for providing electric energy for the control unit, the sensor and the display unit;
wherein the sound collecting part is detachably connected with the holding part.
2. The piezoelectric film sensor-based electronic stethoscope according to claim 1, wherein said sound collecting surface of said sound collecting portion is at an angle of 14 ° to the axis of said handle portion.
3. The electronic stethoscope based on a piezoelectric thin-film sensor according to claim 2, wherein said sound-collecting part is connected with said holding part by bolts, said sound-collecting part has a convex insertion end at the end connected with said holding part, said holding part has a concave fixed end at the end connected with said sound-collecting part, said concave fixed end is matched with said insertion end, said insertion end has a through hole, said fixed end has a bolt hole, said bolt hole is matched with said through hole and has a thread, and said bolt hole are connected by bolts.
4. The electronic stethoscope based on piezoelectric film sensor according to claim 2, wherein said sound collecting part is connected with said holding part by means of a plug-and-socket connection, said sound collecting part is provided with a convex insertion end at the connection end with said holding part, said holding part is provided with a concave fixing end at the connection end with said sound collecting part, said concave fixing end is matched with the structure of said insertion end, and a fastening buckle body is provided at said insertion end or/and said fixing end.
5. The electronic stethoscope based on a piezoelectric thin-film sensor according to claim 3 or 4, wherein the collection surface of the sound collection part is of a circular structure, the diaphragm of the piezoelectric thin-film sensor is a circular diaphragm made of silica gel, the diameter of the diaphragm is 40mm, the diaphragm is fixed above the common cavity of the sound collection part through an external shell or a silica gel sleeve, and the collection surface with the diameter of 35mm is exposed.
6. The electronic stethoscope based on a piezoelectric film sensor according to claim 5, wherein said energy storage unit is located inside said holding portion and comprises a battery compartment and a battery, said battery compartment is detachably or non-detachably connected to said battery compartment, said battery is disposed in said battery compartment, and said battery compartment provides electric energy for said control unit.
7. The piezoelectric film sensor-based electronic stethoscope according to claim 6, wherein said display unit is embedded in the surface of said grip portion.
8. The electronic stethoscope based on piezoelectric film sensor according to claim 7, wherein said control unit comprises a control chip disposed inside said handle and a key control unit embedded in the surface of said handle, said key control unit comprising at least a mode switching key, a volume adjustment "+", "-" key, a communication transmission key and a stethoscope switch key.
9. The electronic stethoscope based on piezoelectric film sensor according to claim 8, further comprising a wireless and/or wired transmission module, a storage module and a listening module, wherein the wireless and/or wired transmission module, the listening module and the storage module are all connected to the control unit, the wireless and/or wired transmission module can transmit the analysis result and the electronic signal of the acoustic vibration outwards through wireless or wired connection, the storage module is used for storing the analysis result and the electronic signal of the acoustic vibration, and the listening module is used for converting the electronic signal of the acoustic vibration to be played.
10. The piezoelectric film sensor-based electronic stethoscope according to claim 9, wherein said listening module comprises at least one of a wired earphone, a wireless earphone, and a speaker.
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| CN202010143084.XA CN111297393A (en) | 2020-03-04 | 2020-03-04 | Electronic stethoscope based on piezoelectric film sensor |
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| CN202010143084.XA CN111297393A (en) | 2020-03-04 | 2020-03-04 | Electronic stethoscope based on piezoelectric film sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111772668A (en) * | 2020-08-04 | 2020-10-16 | 中北大学 | Low-noise electronic stethoscope and system |
| CN113712588A (en) * | 2021-08-30 | 2021-11-30 | 西安交通大学 | Portable multi-scene application electronic stethoscope |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2722677A1 (en) * | 1994-07-25 | 1996-01-26 | Berrehail Mohammed | Equipment for examining physiological sounds for medical purposes |
| CN1329472A (en) * | 1998-12-03 | 2002-01-02 | 梅迪特龙股份有限公司 | Sound pickup sensor |
| CN204016332U (en) * | 2014-08-21 | 2014-12-17 | 王玉晶 | Internal medicine novel multi-use stethoscope |
| CN104883976A (en) * | 2012-12-03 | 2015-09-02 | 埃勒根特医疗公司 | Electronic stethoscope |
| CN204971346U (en) * | 2015-08-28 | 2016-01-20 | 华南理工大学 | General electrostethophone |
| CN107260206A (en) * | 2017-07-08 | 2017-10-20 | 中北大学 | Electronic type stethoscope based on MEMS sound sensing principles |
| CN208435670U (en) * | 2017-11-15 | 2019-01-29 | 霍辰树 | Multifunctional split-type stethoscope |
| CN208464113U (en) * | 2017-07-10 | 2019-02-05 | 山东朗朗智能科技发展有限公司 | Digital intelligent auscultation head and digital Intelligent stethoscope |
| CN212755697U (en) * | 2020-03-04 | 2021-03-23 | 仙居爱之声医疗科技有限公司 | Electronic stethoscope based on piezoelectric film sensor |
-
2020
- 2020-03-04 CN CN202010143084.XA patent/CN111297393A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2722677A1 (en) * | 1994-07-25 | 1996-01-26 | Berrehail Mohammed | Equipment for examining physiological sounds for medical purposes |
| CN1329472A (en) * | 1998-12-03 | 2002-01-02 | 梅迪特龙股份有限公司 | Sound pickup sensor |
| CN104883976A (en) * | 2012-12-03 | 2015-09-02 | 埃勒根特医疗公司 | Electronic stethoscope |
| CN204016332U (en) * | 2014-08-21 | 2014-12-17 | 王玉晶 | Internal medicine novel multi-use stethoscope |
| CN204971346U (en) * | 2015-08-28 | 2016-01-20 | 华南理工大学 | General electrostethophone |
| CN107260206A (en) * | 2017-07-08 | 2017-10-20 | 中北大学 | Electronic type stethoscope based on MEMS sound sensing principles |
| CN208464113U (en) * | 2017-07-10 | 2019-02-05 | 山东朗朗智能科技发展有限公司 | Digital intelligent auscultation head and digital Intelligent stethoscope |
| CN208435670U (en) * | 2017-11-15 | 2019-01-29 | 霍辰树 | Multifunctional split-type stethoscope |
| CN212755697U (en) * | 2020-03-04 | 2021-03-23 | 仙居爱之声医疗科技有限公司 | Electronic stethoscope based on piezoelectric film sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111772668A (en) * | 2020-08-04 | 2020-10-16 | 中北大学 | Low-noise electronic stethoscope and system |
| CN113712588A (en) * | 2021-08-30 | 2021-11-30 | 西安交通大学 | Portable multi-scene application electronic stethoscope |
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