CN103654841A - Portable digital stethoscope - Google Patents
Portable digital stethoscope Download PDFInfo
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- CN103654841A CN103654841A CN201310692657.4A CN201310692657A CN103654841A CN 103654841 A CN103654841 A CN 103654841A CN 201310692657 A CN201310692657 A CN 201310692657A CN 103654841 A CN103654841 A CN 103654841A
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Abstract
The invention discloses a portable digital stethoscope which is composed of a stethoscope head, a rubber tube, a signal processing unit, ear pieces, a storage device, a liquid-crystal display and button module and a power source. The signal processing unit is located inside the rubber tube. The stethoscope head is replaceable and is in threaded connection with the rubber tube. The stethoscope is provided with a storage or an SD card and communicated with a computer through a USB interface, and can also achieve the wireless communication function through a zigbee protocol. Earphones are embedded into the ear pieces. The earphones are connected with the signal processing unit through earphone interfaces. The power source is a rechargeable lithium battery. A liquid-crystal display screen displays relevant information. Compared with a traditional stethoscope, the stethoscope head of the stethoscope is replaceable, stethoscoping modes can be selected, the volume of the stethoscope can be adjusted, recording, storage, timekeeping, heart rate displaying and wireless communication can be achieved, the operation is easy, use is convenient, and the stethoscope can be used by medical workers and used for teaching activities.
Description
Technical field
Patent of the present invention relates to medical instruments field, has especially proposed a kind of portable digital stethoscope.
Background technology
Stethoscope is the important tool of diagnosis respiratory system, cardiovascular system diseases, it is doctor's sign, stethoscope is the earliest by Charles Robert Richet thunder nanogram (Rene larnnec) invention, through British physician George. Philips. and the people such as toll bar, Howard. Si Puleige (Howard Sprague) and Bauer this (Bowles) have constantly formed the conventional acoustic stethoscope generally using now after improvement.Conventional acoustic stethoscope mainly comprises auscultation head (chest piece), conduction portion (sebific duct), audition part (ear piece).
Conventional acoustic stethoscope principle is roughly as follows: pickup is partly a film chamber that area is larger, in health, sound wave makes stethoscopic diaphragm vibration, thereby drive the air of stethoscope inside to vibrate thereupon, because the tract at stethoscopic sebific duct and ear piece position is carefully narrow, this part air vibration Amplitude Ratio film intracavity is large, thereby has heard the acoustical signal after amplifying.
Although traditional stethoscope is widely used, found following problem in use procedure: the acoustical signals such as cardiechema signals, respiratory murmur signal are extremely faint, be difficult to catch, be subject to environmental disturbances, accuracy is poor; Sound waveform is complicated, there will be the situation of distortion in the process of transmitting, and stethoscope sebific duct is longer, more may occur distortion, and can be subject to the congenital restriction on human auditory system; Tradition stethoscope can only, for doctor institute auscultation, be unfavorable for the comprehensive consultation of doctors of the state of an illness, and be not easy to the teaching of the relevant auscultation course of medical college; Doctor is usually to need to count heart rate using stethoscope, so must complete by wrist-watch or other timing tools; During auscultation, need doctor closely to diagnose, for some communicate illnesss, doctor may be infected by patient, cannot realize non-contact type auscultation.Therefore develop a kind of portable digital stethoscope, clinical position, teaching are all wanted to significance.
Summary of the invention
Patent object of the present invention is that a kind of portable digital stethoscope is provided.
For achieving the above object, the technical scheme that patent of the present invention adopts is: stethoscope has auscultation head, sebific duct, signal processing unit, ear piece, storage device, liquid crystal display and key-press module and power supply, described signal processing unit is positioned at sebific duct, described auscultation head is replaceable, adopt and be threaded with sebific duct, described signal processing unit has been realized acoustical signal, the signal of telecommunication, the mutual conversion of digital signal and the amplification filtering of signal, described stethoscope has memorizer or SD card, can digital signal be converted to file by microprocessor is stored in wherein, and by USB interface and compunlcation, also can complete radio communication function by zigbee agreement, described ear piece has been embedded in earphone, earphone is connected with signal processing unit by earphone interface.
Described auscultation head is replaceable, has 5 auscultation heads available, is respectively two membranous type auscultation heads, three bell auscultation heads, and the size of auscultation head is had nothing in common with each other.
Described signal processing unit is by electret capcitor microphone, signal amplification circuit, programmable filter circuit, audio coder or analog to digital conversion circuit, microprocessor, audio decoder or D/A converting circuit, adjustable audio frequency power amplifier forms, described electret capcitor microphone is converted to the signal of telecommunication by acoustical signal, described signal amplification circuit amplifies the signal of telecommunication, described programmable filter circuit has low frequency mode, high frequency mode, three kinds of full range patterns, described audio coder or analog to digital conversion circuit are converted to digital signal by the signal of telecommunication after conditioning, described audio decoder or D/A converting circuit are converted to the signal of telecommunication by digital signal, the adjustable audio frequency power amplifier signal of telecommunication amplifies to drive earphone.
Described key-press module can switching on and shutting down, open wireless communication function, recording, selection auscultation pattern, regulate volume.
Described LCD MODULE shows mode of operation, current electric quantity, wireless communication state, heart rate and current time.
Described power acquisition is powered with chargeable lithium cell, can be by USB interface to lithium cell charging.
Patent advantage of the present invention is:
1. have a plurality of auscultation heads, medical worker can select different auscultation heads according to patient's situation.
2. have three kinds of auscultation patterns (low frequency mode, high frequency mode, full range pattern), medical worker can select to listen to the acoustical signal of different frequency composition.
3. there is volume adjusting function, make medical worker's auscultation clearer, more accurate.
4. there is radio communication function, can with same money stethoscope, computer, PDA radio communication, share auscultatory sound, can utilize related software to show auscultatory sound waveform, it is analyzed, be convenient to the consultation of doctors.
5. there is recording, memory function, different patients' auscultatory sound can be recorded, so that follow-up patient's change of illness state.
In 6.SD card, store hear sounds, the respiratory murmur of typical disease, can select to listen to, convenient teaching.
7. can displaying time and heart rate, medical worker is without see wrist-watch timing in auscultation process, number hearts rate.
8. keep traditional stethoscopic contour structures, met doctor's use habit.
Accompanying drawing explanation
Accompanying drawing 1 is the stethoscopic a kind of embodiment schematic appearance of portable digital of patent of the present invention
Accompanying drawing 2 is the stethoscopic a kind of embodiment liquid crystal display of portable digital and the button schematic diagram of patent of the present invention
Accompanying drawing 3 is the stethoscopic structural principle block diagram of portable digital of patent of the present invention
The specific embodiment
Below in conjunction with embodiment and with reference to accompanying drawing, patent of the present invention is described further
Shown portable digital stethoscope, has auscultation head 1, auscultation head 2, auscultation head 3, auscultation head 4, auscultation head 5, sebific duct 10, signal processing unit 9, ear piece 12, liquid crystal display and key-press module 14 and power supply, storage device formation.Described auscultation head 1 is membranous type auscultation head, its diameter is 45mm, auscultation head 2 is membranous type auscultation head, and its diameter is 30mm, and auscultation head 3 is bell auscultation head, its diameter is 34mm, auscultation head 4 is bell auscultation head, and its diameter is 25mm, and auscultation head 5 is bell auscultation head, its diameter is 20mm, and auscultation head is connected with sebific duct 10 by helicitic texture 6.
Described signal processing unit 9 is positioned at sebific duct 10, electret capcitor microphone 30 is converted to the signal of telecommunication by acoustical signal, the signal of telecommunication entered signal amplification circuit 31 and was exaggerated, 32 pairs of amplified signal of programmable filter circuit are carried out filtering and noise reduction processing, and audio decoder or analog to digital conversion circuit 33 convert electrical signals to digital signal.Audio coder or D/A converting circuit 39 are converted to the signal of telecommunication by digital signal, and the signal of telecommunication is exaggerated through adjustable audio frequency power amplifier 38, finally by stethoscope ear earphone 36, by earphone interface 37, listens to acoustical signal, and described stethoscope 36 earphones embed in ear piece 12.
Described portable digital stethoscope button as shown in Figure 2, button 23 is on & off switch, button 22 is auscultation mode switching key, button 20 is radio communication function on & off switch, button 17 is for heightening volume key, and button 28 is for reducing volume key, and button 16 is wireless transmission key, button 27 is wireless receiving key, and button 15 is recording/playback key.
Described portable digital stethoscope LCD MODULE adopts 1.5 cun of TFT LCDs, viewing area 18 display radio functional statuses, viewing area 19 is auscultation mode state, viewing area 21 is volume status, viewing area 24 is state of charge, viewing area 25 shows heart rate, and viewing area 26 shows current time.
The stethoscopic storage device of described portable digital consists of microprocessor 40, memorizer or SD card 34 and USB interface 42, when pressing need to record time, microprocessor 40 is recorded signal with document form, be stored in memorizer or SD card 34, and can pass through USB interface 42 and compunlcation, when needs playback, information in microprocessor 40 read memories or SD card 34.
Described auscultation mode switching key 22 can be selected auscultation pattern, auscultation pattern is determined by programmable filter circuit 32, when microprocessor 40 receives button 22 information, according to information, adjust programmable filter circuit cut-off frequency, thereby change auscultation pattern, low frequency auscultation mode frequency is 20-500Hz, high frequency auscultation mode frequency is 200-500Hz, full range mode frequency is 20-1500Hz, and described auscultation pattern viewing area 19 will show " low " " height " " entirely ", to represent current auscultation pattern.
The described volume of heightening volume key 17, reduction volume key 28 scalable stethoscope earphones 36, volume is determined by adjustable audio frequency power amplifier 39, described volume status viewing area 21 demonstration current volume.
Described radio communication 41 completes based on zigbee agreement, and open wireless communication function switch 20 just can be communicated by letter with same money stethoscope, computer, PDA, presses wireless transmission key 16 and will send information, and button wireless receiving key 27 will receive information.
The stethoscopic power supply 43 of described portable digital adopts chargeable lithium cell power supply, and state of charge is presented in liquid crystal display viewing area 24, when electric weight is too low, and can be by USB interface to lithium cell charging.
Claims (10)
1. portable digital stethoscope, it is characterized in that, described stethoscope is by auscultation head, sebific duct, signal processing unit, ear piece, storage device, liquid crystal display and key-press module and power supply, described auscultation head is replaceable, realize the collection of acoustical signal, in described sebific duct, be provided with signal processing unit, acoustical signal is converted to digital signal, and digital signal is processed, digital signal is after digital-to-analogue conversion, can listen to by earphone in ear piece, described stethoscope can be selected auscultation pattern, capable of adjusting sound volume, the storage of can recording, timing, show heart rate, radio communication.
2. portable digital stethoscope according to claim 1, is characterized in that, described auscultation head is replaceable, between auscultation head and sebific duct, by being threaded, having 5 auscultation heads and is replaced, and is respectively two membranous type auscultation heads, three bell auscultation heads.
3. portable digital stethoscope according to claim 1, it is characterized in that, signal processing unit is provided with electret capcitor microphone, signal amplification circuit, programmable filter circuit, audio coder or analog to digital conversion circuit, described electret capcitor microphone is converted to the signal of telecommunication by acoustical signal, described signal amplification circuit amplifies the signal of telecommunication, described programmable filter circuit has low frequency mode, high frequency mode, three kinds of full range patterns, medical worker can utilize button to select, described audio coder or analog to digital conversion circuit are converted to digital signal by the signal of telecommunication after conditioning.
4. portable digital stethoscope according to claim 1, is characterized in that, signal processing unit sound intermediate frequency decoder or D/A converting circuit, adjustable audio frequency power amplifier, be converted to the signal of telecommunication by digital signal, and the signal of telecommunication is amplified to drive earphone.
5. portable digital stethoscope according to claim 1, is characterized in that, embeds earphone in ear piece, by earphone interface, is connected with the adjustable audio frequency power amplifier in signal processing unit.
6. portable digital stethoscope according to claim 1, is characterized in that, described scalable stethoscope pattern, capable of adjusting sound volume, select by button.
7. portable digital stethoscope according to claim 1, is characterized in that, described recorded storage, and storage file is placed in SD card, can be by USB interface and compunlcation.
8. portable digital stethoscope according to claim 1, is characterized in that, described LCDs can displaying time and heart rate.
9. portable digital stethoscope according to claim 1, is characterized in that, described radio communication completes based on zigbee agreement, can communicate by letter with same money stethoscope, computer, PDA.
10. portable digital stethoscope according to claim 1, is characterized in that, described power acquisition is powered to stethoscope with chargeable lithium cell, can be by USB interface to lithium cell charging.
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| CN201310692657.4A CN103654841A (en) | 2013-12-13 | 2013-12-13 | Portable digital stethoscope |
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| CN201310692657.4A CN103654841A (en) | 2013-12-13 | 2013-12-13 | Portable digital stethoscope |
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| CN103654841A true CN103654841A (en) | 2014-03-26 |
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| CN201310692657.4A Pending CN103654841A (en) | 2013-12-13 | 2013-12-13 | Portable digital stethoscope |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935362A (en) * | 2015-05-12 | 2015-09-23 | 上海人智信息科技有限公司 | Remote auscultation method and system |
| CN105266842A (en) * | 2015-11-03 | 2016-01-27 | 江苏物联网研究发展中心 | Auscultation mode switching automatic detection digital stethoscope and auscultation mode switching detection method |
| CN105496448A (en) * | 2016-01-26 | 2016-04-20 | 江苏远燕医疗设备有限公司 | Stethoscope with recording function |
| CN105769386A (en) * | 2016-03-30 | 2016-07-20 | 广东医学院 | Handheld thrombus analyzer for mechanical prosthetic valve |
| CN105852902A (en) * | 2016-04-26 | 2016-08-17 | 江苏物联网研究发展中心 | Method and system for switching auscultation frequency range of electronic auscultator |
| CN106419952A (en) * | 2015-08-13 | 2017-02-22 | 乐普（北京）医疗器械股份有限公司 | Electronic stethoscope |
| CN106510752A (en) * | 2016-01-20 | 2017-03-22 | 曹松林 | Domestic and medical two-purpose sound recording and fetal heart sound listening stethoscope |
| CN106792369A (en) * | 2017-01-23 | 2017-05-31 | 上海贝生医疗设备有限公司 | One kind is used for stethoscopic split type signal processing apparatus |
| CN106890004A (en) * | 2017-03-28 | 2017-06-27 | 李中珂 | A kind of Multifunctional internal medicine stethoscope |
| JP2017153640A (en) * | 2016-03-01 | 2017-09-07 | 株式会社国際電気通信基礎技術研究所 | Auscultation training system and simulation sound collection part |
| CN109998587A (en) * | 2019-04-25 | 2019-07-12 | 桂杰 | A kind of electronic type heart sound, lungs sound remote auscultation system |
| CN110710987A (en) * | 2019-10-28 | 2020-01-21 | 华中科技大学同济医学院附属协和医院 | Heatable constant temperature recording stethoscope |
| CN111281419A (en) * | 2020-03-06 | 2020-06-16 | 葛莉 | Stethoscope for pediatrics |
| CN111493926A (en) * | 2020-05-14 | 2020-08-07 | 陕西省人民医院 | Combined wireless stethoscope applicable to worn protective clothing |
| CN112807013A (en) * | 2021-01-25 | 2021-05-18 | 合肥德铭电子有限公司 | Medical stethoscope system and using method thereof |
| CN113274049A (en) * | 2021-05-17 | 2021-08-20 | 复旦大学 | Wireless low-noise stethoscope |
| CN113520449A (en) * | 2020-04-13 | 2021-10-22 | 中国人民解放军海军特色医学中心 | Electronic auscultation system and method |
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| CN201939375U (en) * | 2011-01-28 | 2011-08-24 | 浙江好络维医疗技术有限公司 | Portable wireless signal display storage device for electrocardiogram, heart sounds and breath sounds |
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| US20080013747A1 (en) * | 2006-06-30 | 2008-01-17 | Bao Tran | Digital stethoscope and monitoring instrument |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935362A (en) * | 2015-05-12 | 2015-09-23 | 上海人智信息科技有限公司 | Remote auscultation method and system |
| CN106419952A (en) * | 2015-08-13 | 2017-02-22 | 乐普（北京）医疗器械股份有限公司 | Electronic stethoscope |
| CN105266842B (en) * | 2015-11-03 | 2018-02-06 | 江苏物联网研究发展中心 | Auscultation mode switches automatic detection digital stethoscope and auscultation mode switching detection method |
| CN105266842A (en) * | 2015-11-03 | 2016-01-27 | 江苏物联网研究发展中心 | Auscultation mode switching automatic detection digital stethoscope and auscultation mode switching detection method |
| CN106510752A (en) * | 2016-01-20 | 2017-03-22 | 曹松林 | Domestic and medical two-purpose sound recording and fetal heart sound listening stethoscope |
| CN105496448A (en) * | 2016-01-26 | 2016-04-20 | 江苏远燕医疗设备有限公司 | Stethoscope with recording function |
| JP2017153640A (en) * | 2016-03-01 | 2017-09-07 | 株式会社国際電気通信基礎技術研究所 | Auscultation training system and simulation sound collection part |
| CN105769386A (en) * | 2016-03-30 | 2016-07-20 | 广东医学院 | Handheld thrombus analyzer for mechanical prosthetic valve |
| CN105852902A (en) * | 2016-04-26 | 2016-08-17 | 江苏物联网研究发展中心 | Method and system for switching auscultation frequency range of electronic auscultator |
| CN106792369A (en) * | 2017-01-23 | 2017-05-31 | 上海贝生医疗设备有限公司 | One kind is used for stethoscopic split type signal processing apparatus |
| CN106890004A (en) * | 2017-03-28 | 2017-06-27 | 李中珂 | A kind of Multifunctional internal medicine stethoscope |
| CN109998587A (en) * | 2019-04-25 | 2019-07-12 | 桂杰 | A kind of electronic type heart sound, lungs sound remote auscultation system |
| CN109998587B (en) * | 2019-04-25 | 2022-02-11 | 桂杰 | Electronic heart sound and lung sound remote auscultation system |
| CN110710987A (en) * | 2019-10-28 | 2020-01-21 | 华中科技大学同济医学院附属协和医院 | Heatable constant temperature recording stethoscope |
| CN111281419A (en) * | 2020-03-06 | 2020-06-16 | 葛莉 | Stethoscope for pediatrics |
| CN113520449A (en) * | 2020-04-13 | 2021-10-22 | 中国人民解放军海军特色医学中心 | Electronic auscultation system and method |
| CN113520449B (en) * | 2020-04-13 | 2023-05-05 | 中国人民解放军海军特色医学中心 | Electronic auscultation system and method |
| CN111493926A (en) * | 2020-05-14 | 2020-08-07 | 陕西省人民医院 | Combined wireless stethoscope applicable to worn protective clothing |
| CN112807013A (en) * | 2021-01-25 | 2021-05-18 | 合肥德铭电子有限公司 | Medical stethoscope system and using method thereof |
| CN113274049A (en) * | 2021-05-17 | 2021-08-20 | 复旦大学 | Wireless low-noise stethoscope |
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Application publication date: 20140326 |