CN103705270A - Fetal heart monitoring equipment - Google Patents
Fetal heart monitoring equipment Download PDFInfo
- Publication number
- CN103705270A CN103705270A CN201210370905.9A CN201210370905A CN103705270A CN 103705270 A CN103705270 A CN 103705270A CN 201210370905 A CN201210370905 A CN 201210370905A CN 103705270 A CN103705270 A CN 103705270A
- Authority
- CN
- China
- Prior art keywords
- signal
- fetal heart
- heart rate
- fetal
- monitoring equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The invention provides fetal heart monitoring equipment. The fetal heart monitoring equipment is characterized by comprising a sensing node and a personal gateway, the sensing node does not actively emit ultrasonic waves to a fetus but passively collect sounds or vibration on the surface of the abdomen of a pregnant woman to acquire fetal heart signals, and sends the fetal heart signals to the personal gateway in a wireless manner, and the personal gateway is used for processing the fetal heart signals sent by the sensing node to acquire a fetal heart rate. By the fetal heart monitoring equipment, the pregnant woman can wirelessly monitor health status of the fetus at home by herself for a long time, and using passive-type fetal heart sound monitoring does not pose a threat to health of the fetus; and the fetal heart monitoring equipment is especially suitable for monitoring of high-risk pregnant women.
Description
Technical field
The invention belongs to electronic equipment and digital processing field, particularly a kind of fetal rhythm monitoring equipment that can carry out long-time passive type monitoring.
Background technology
At anemia of pregnant woman's phenolics, especially conceived middle and advanced stage, guards the indices of fetus, can understand fetus health status in uterus, finds early the abnormal of fetus.Monitoring fetal rhythm is mainly that whether fetal heart frequency is normal in order to obtain the real-time heart rate of fetus, is to judge fetus important indicator of anoxia whether in parent.Therefore fetal rhythm monitoring is the big event checking in the pregnancy period.
At present fetus is carried out to the main Doppler ultrasonography on monitoring that adopts of fetal rhythm monitoring.The principle of Doppler ultrasonography on monitoring is to use to launch hyperacoustic probe, position transmitting ultrasound wave to heart of fetus, when ultrasound wave runs into the heart of motion and reflex time occurs, due to Doppler effect, return wave frequency slight change can occur, echo-signal is calculated to the heart rate that can obtain fetus.Due to Doppler ultrasonography on monitoring, initiatively launch ultrasound wave and survey, can effectively survey the heartbeat that fetus is faint, high to the heart rate analysis accuracy of fetus, therefore in fetal rhythm monitoring, be widely adopted.
But ultrasound wave has certain heat effect and acoustic effect to tissue, to the health of fetus, may there is potential harm, the time of therefore fetus being carried out to ultrasonic monitoring should be controlled.If wish fetal rhythm to realize long-time continual monitoring, with the health and fitness information of Real-time Obtaining fetus, using doppler ultrasound is not a desirable selection.In addition, the fetal heart monitoring of Hospitals at Present routine, about 20 minutes, carries out once to hospital every one to two week needs after conceived 30 weeks.And for high risk gravida, need to guard more frequently, even need to be in hospital in advance, brought larger inconvenience to anemia of pregnant woman and household, many anemia of pregnant woman wish to understand at any time the health status of fetus at home.And common portable electronic fetal heart monitor is all used Doppler ultrasonography on monitoring at present, the ultrasound wave dosage that some of them equipment is used, through strict test and supervision, does not likely cause harmful effect to foetus health.
Before doppler ultrasound foetus ECG monitor is not universal, to the traditional tire sound auscultation equipment of the normal employing of the monitoring of fetal rhythm, comprise wooden fetal heart telephone receiver and stethoscope.Passive detection method based on auscultation is harmless to fetal well-being, but owing to cannot acoustical signal being amplified and record, therefore by doppler ultrasound equipment, is replaced gradually.Development along with sensor technology, if can adopt the detection method of the passive type of sensor, for example use acoustic sensor to collect the acoustical signal of parent abdominal part and adopt the method for signal processing to calculate fetal heart frequency, just can realize the long-time continual monitoring to fetus, and safe, with low cost.
Summary of the invention
(1) technical problem to be solved
The present invention is directed to the safety issue that existing doppler ultrasound fetal heart sound monitoring may exist, proposed a kind of without adopting hyperacoustic passive type fetal rhythm monitoring equipment.
(2) technical scheme
The invention provides a kind of fetal rhythm monitoring equipment, comprise sensing node and Personal gateway, wherein, described sensing node, not initiatively to fetus transmitting ultrasound wave, but gather passively the sound of anemia of pregnant woman's abdominal surface or vibrate to obtain fetal heart rate signal, and send to described Personal gateway by wireless mode; Described Personal gateway, processes for the fetal heart rate signal that described sensing node is sent, and obtains Fetal Heart Rate.
More preferably, described Personal gateway, is further used for being connected with wide area network, sends described Fetal Heart Rate to external processing apparatus.
Further, described sensing node comprises: sensor and Transmit-Receive Unit, and wherein, described sensor, for gathering described fetal heart rate signal, and is converted into the signal of telecommunication by described fetal heart rate signal, and the described signal of telecommunication is sent to described Transmit-Receive Unit; Described Transmit-Receive Unit, for sending to described Personal gateway by the signal of telecommunication receiving from described sensor.
More preferably, described sensing node also further comprises signal processing unit, and described sensor is further used for gathering described fetal heart rate signal, and described fetal heart rate signal is converted into the signal of telecommunication, and the described signal of telecommunication is sent to described signal processing unit; Described signal processing unit, for the described signal of telecommunication is carried out to preliminary treatment, the processing here comprises that filtering, denoising, heart rate calculate, and the signal of telecommunication after processing is sent to described Transmit-Receive Unit; Described Transmit-Receive Unit, is further used for the signal of telecommunication receiving from described signal processing unit to send to described Personal gateway.
More preferably, described signal processing unit is single-chip microcomputer or DSP.
More preferably, described sensor is acoustic sensor.
More preferably, described sensor is piezoelectric transducer.
More preferably, described sensor further comprises AD conversion unit, for described fetal heart rate signal is converted into digital electric signal.
More preferably, described Transmit-Receive Unit is bluetooth module; Described Personal gateway is smart mobile phone.
(3) beneficial effect
The monitoring equipment that the present invention proposes, the detection method of the passive type of employing sensor, has the features such as safe, portable strong.Use this equipment, anemia of pregnant woman just can carry out effectively long-time passive type monitoring to fetus at home, and can send Fetal Heart Rate data to external equipment by network, thereby can access doctor's remote assistance, for growing up healthy and sound of fetus provides strong guarantee.
Accompanying drawing explanation
Fig. 1 is the fetal rhythm monitoring equipment figure providing in the embodiment of the present invention;
Fig. 2 is the block diagram of the sensing node of the fetal rhythm monitoring equipment that provides in the embodiment of the present invention;
Fig. 3 be in the embodiment of the present invention sensing node with as the smart mobile phone of Personal gateway, transmit data and with the interconnected schematic diagram of wide area network;
Fig. 4 be in the embodiment of the present invention sensing node and the smart mobile phone that installs the first Transmit-Receive Unit circuit board additional transmit data and with the interconnected schematic diagram of wide area network;
Fig. 5 be in the embodiment of the present invention sensing node and Personal gateway equipment transfering data and with the interconnected schematic diagram of wide area network;
Fig. 6 is the flow chart of Fetal Heart Rate acquisition methods in the embodiment of the present invention;
Fig. 7 is the schematic diagram of a kind of fetal heartbeat pattern of providing of the embodiment of the present invention;
Fig. 8 be the embodiment of the present invention provide fetal heart rate signal is carried out to the design sketch of pattern match;
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
The invention provides a kind of fetal rhythm monitoring system, comprise sensing node and Personal gateway.
As shown in Figure 2, sensing node comprises sensor, Transmit-Receive Unit to the structured flowchart of fetal heart sound monitoring sensing node.Wherein, sensor, for fetal heart rate signal is converted into the signal of telecommunication, anyly can change into the signal of telecommunication by acoustical signal or vibration signal, and the sensor with enough sensitivity all can be used for implementing this programme.
More preferably, the present invention can adopt acoustic sensor, as used high sensitivity mike.High sensitivity mike mainly consists of taper resonator cavity and electret microphone.Taper resonator cavity center is cavity structure, can effectively gather faint fetal heart sound signal.Bottom center place at taper resonator cavity embeds a highly sensitive electret microphone, and this mike can be converted into acoustical signal signal of telecommunication output.
More preferably, the present invention also can adopt piezoelectric type thin film sensor, the skin of piezoelectric transducer being close to anemia of pregnant woman's abdominal surface, heart of fetus is beated while passing to anemia of pregnant woman's abdominal surface, can cause vibration, piezoelectric type thin film can perception vibrate the pressure variation causing, and this pressure signal is converted into signal of telecommunication output.
Therefore while using fetal rhythm monitoring equipment of the present invention, because fetus has certain motion in uterus, at parent abdominal part, heart of fetus is beated, and the strongest position neither fix, and anemia of pregnant woman can obtain best monitoring effect by adjusting the position of sensor.
More preferably, sensor further contains AD conversion unit, and for the fetal heart rate signal of sensor output is converted into digital electric signal, the signal processing circuit that is beneficial to rear end is processed fetal heart sound signal.
Transmit-Receive Unit, for the transfer of data collecting is arrived to Personal gateway, so that user's save data, for further medical analysis processing.More preferably, described Transmit-Receive Unit adopts wireless mode that the transfer of data collecting is arrived to described Personal gateway.
More preferably, sensing node is except sensor and Transmit-Receive Unit, and further signalization processing unit, for fetal heart rate signal is processed, and extracts Fetal Heart Rate.Signal processing unit can adopt single-chip microcomputer or DSP, and fetal heart sound signal is carried out to preliminary processing, and the processing here can comprise filtering, denoising, heart rate calculating etc., but be not limited to above aspect, then by Transmit-Receive Unit, be delivered to Personal gateway, wherein, DSP is digital signal processor.Also untreated fetal heart sound signal can be directly delivered to Personal gateway, by Personal gateway, carry out fetal heart rate signal processing, extract Fetal Heart Rate.
The Transmit-Receive Unit of sensing node and the data transmission between Personal gateway can have multiple implementation, at this, provide three kinds of examples:
As shown in Figure 3, the Transmit-Receive Unit of sensing node adopts bluetooth module to the first scheme, usings smart mobile phone as Personal gateway, carries out radio communication between the two by Bluetooth protocol.By and smart mobile phone between radio communication, sensing node can send to the real-time heart rate of fetal rhythm data and fetus on smart mobile phone and preserve, anemia of pregnant woman and household can see the real-time heart rate curve of fetus on smart mobile phone.Meanwhile, anemia of pregnant woman can pass through network, and the Fetal Heart Rate data of preserving on mobile phone are passed to doctor or are sent in the terminal unit of hospital.Doctor can judge whether fetus occurs extremely according to the heart rate data change curve of fetus.
First scheme as shown in Figure 4, in this programme, the wireless transmit/receive units of sensing node adopts radio receiving transmitting module, at smart mobile phone, install the first Transmit-Receive Unit circuit board behind additional as Personal gateway, the first Transmit-Receive Unit circuit board comprises wireless transmit/receive units, MCU and USB joint, wherein, MCU is single-chip microcomputer; Described smart mobile phone is connected by USB joint with the first described Transmit-Receive Unit circuit board.Radio receiving transmitting module and smart mobile phone carry out radio communication between the two, and data are further transferred to outside treatment facility is undertaken by network by smart mobile phone, identical with the first scheme.
The third scheme as shown in Figure 5, the wireless transmit/receive units of sensing node adopts radio receiving transmitting module, Personal gateway adopts and to comprise wireless transmit/receive units, memory element, MCU, power managed module and to carry out the equipment of mutual general-purpose interface with wide area network, and sensing node and Personal gateway communicate by wireless mode.Personal gateway sends Fetal Heart Rate data to external processing apparatus by wide area network.By this scheme, user no longer needs to use smart mobile phone to carry out data transmission, has expanded the suitability of this fetal rhythm monitoring equipment.
This equipment can obtain Fetal Heart Rate with Fetal Heart Rate acquisition methods below, but the signal processing method of acquisition Fetal Heart Rate is not limited to this, as shown in Figure 6, is a kind of flow chart of Fetal Heart Rate preparation method.
S1, the frequency domain characteristic of fetal heart rate signal is analyzed.
S2, inhibition be the noise in fetal heart rate signal effective band not.The effective band of fetal heart rate signal, between 20～130Hz, by suppressing noise, can improve signal to noise ratio.
S3, the signal calculated energy in a predetermined time window.For original cardiechema signals, the hear sounds of each bat can continue for some time length, shows in time domain it is near the waveform repeatedly shaking null value, generally has a plurality of crests and trough, and the accurate location of determining hear sounds beat is had difficulties.The instantaneous energy of the energy of signal calculated in a predetermined time window, contributes to determine the accurate location of hear sounds beat.In this step, by the meansigma methods of signal in a scheduled time window square, represent the instantaneous energy of signal.
S4, determine the crest of instantaneous energy signal.The crest place of instantaneous energy signal is the moment of fetal heart sound intensity maximum, usings this position as heart beating beat.
S5, by pattern match, obtain initial heart rate, determine fetus heart rate range roughly.A fixing pattern is generally followed in the heart beating of fetus, and as shown in Figure 7, a heart beat cycle mainly consists of two sound heart beatings, and they are respectively first heart sound and second heart sound.General first heart sound is less than second heart sound to the interval of the first heart sound of next heart beat cycle to the interval of second heart sound.By the method for parameter scanning, determine the best heart beating pattern of current cardiechema signals, then process containing noisy cardiechema signals according to this best heart beating pattern, identifier is should the cardiechema signals of best heart beating pattern, screen out noise jamming, its implementation result as shown in Figure 8.According to the result of pattern match, calculate again the average heart rate of fetus.
S6, the average heart rate obtaining based on back and heart beating pattern, carry out pattern match to follow-up fetal heart rate signal.The average heart rate obtaining based on back and heart beating pattern, can proceed pattern match to the fetal heart rate signal in follow-up 4 heart beat cycles.Because the variation of heart rate in 4 heart beat cycles is very little, therefore can directly adopt average heart rate obtained in the previous step and heart beating pattern.Data Update average heart rate and heart beating pattern based on current 4 heart beat cycles after coupling finishes, be used further to the next pattern match of 4 heart beat cycles.
The real-time heart rate of S7, calculating fetus.The method of calculating the real-time heart rate of fetus is to obtain the peak-to-peak distance of normal coupling ripple of the heart beat cycle of being separated by, and can obtain the time span of heart beat cycle.Heart beat cycle number in one minute is real-time heart rate.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and replacement, these improvement and replacement also should be considered as protection scope of the present invention.
Claims (9)
1. a fetal rhythm monitoring equipment, is characterized in that, comprises sensing node and Personal gateway, wherein,
Described sensing node, not initiatively to fetus transmitting ultrasound wave, but gathers passively the sound of anemia of pregnant woman's abdominal surface or vibrates to obtain fetal heart rate signal, and sending to described Personal gateway by wireless mode;
Described Personal gateway, processes for the fetal heart rate signal that described sensing node is sent, and obtains Fetal Heart Rate.
2. fetal rhythm monitoring equipment as claimed in claim 1, is characterized in that, described Personal gateway is further used for being connected with wide area network, sends described Fetal Heart Rate to external processing apparatus.
3. fetal rhythm monitoring equipment as claimed in claim 1, is characterized in that, described sensing node comprises: sensor and Transmit-Receive Unit, wherein,
Described sensor, for gathering described fetal heart rate signal, and is converted into the signal of telecommunication by described fetal heart rate signal, and the described signal of telecommunication is sent to described Transmit-Receive Unit;
Described Transmit-Receive Unit, for sending to described Personal gateway by the signal of telecommunication receiving from described sensor.
4. fetal rhythm monitoring equipment as claimed in claim 3, is characterized in that, described sensing node also further comprises signal processing unit,
Described sensor, is further used for gathering described fetal heart rate signal, and described fetal heart rate signal is converted into the signal of telecommunication, and the described signal of telecommunication is sent to described signal processing unit;
Described signal processing unit, for the described signal of telecommunication is carried out to preliminary treatment, the processing here comprises that filtering, denoising, heart rate calculate, and the signal of telecommunication after processing is sent to described Transmit-Receive Unit;
Described Transmit-Receive Unit, is further used for the signal of telecommunication receiving from described signal processing unit to send to described Personal gateway.
5. fetal rhythm monitoring equipment as claimed in claim 4, is characterized in that, described signal processing unit is single-chip microcomputer or DSP.
6. the fetal rhythm monitoring equipment as described in any one in claim 3～5, is characterized in that, described sensor is acoustic sensor.
7. the fetal rhythm monitoring equipment as described in any one in claim 3～5, is characterized in that, described sensor is piezoelectric transducer.
8. fetal rhythm monitoring equipment as claimed in claim 3, is characterized in that, described sensor further comprises AD conversion unit, for described fetal heart rate signal is converted into digital electric signal.
9. fetal rhythm monitoring equipment as claimed in claim 3, is characterized in that, described Transmit-Receive Unit is bluetooth module; Described Personal gateway is smart mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210370905.9A CN103705270B (en) | 2012-09-28 | 2012-09-28 | Fetal rhythm monitoring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210370905.9A CN103705270B (en) | 2012-09-28 | 2012-09-28 | Fetal rhythm monitoring equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103705270A true CN103705270A (en) | 2014-04-09 |
| CN103705270B CN103705270B (en) | 2016-01-13 |
Family
ID=50398900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210370905.9A Active CN103705270B (en) | 2012-09-28 | 2012-09-28 | Fetal rhythm monitoring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103705270B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104586428A (en) * | 2015-01-04 | 2015-05-06 | 张敏 | Pick device for fetal heartbeat sound |
| CN105708437A (en) * | 2015-08-03 | 2016-06-29 | 美的集团股份有限公司 | Fetal heart monitoring device |
| CN106137168A (en) * | 2016-07-28 | 2016-11-23 | 传世未来（北京）信息科技有限公司 | A kind of fetus monitoring method and foetal monitor |
| CN106491116A (en) * | 2016-11-11 | 2017-03-15 | 深圳市响音科技有限公司 | A kind of passive type fetal rhythm detecting system and detection method |
| CN107157474A (en) * | 2017-06-27 | 2017-09-15 | 西南医科大学 | A kind of portable multiparity's electrocardioscanner and its monitoring method |
| CN108245224A (en) * | 2018-01-30 | 2018-07-06 | 王子坤 | It is a kind of it is easy to carry can Automatic-searching heart Minimally Invasive Surgery pincers |
| CN109106397A (en) * | 2017-06-25 | 2019-01-01 | 吴健康 | A kind of monitoring of fetal heart sound and analysis system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200966624Y (en) * | 2006-11-13 | 2007-10-31 | 张为朵 | Two-purpose fetus heart sound monitoring instrument |
| CN101427920A (en) * | 2008-12-01 | 2009-05-13 | 江南大学 | Wireless monitoring dress system for mother and baby |
| TW200942212A (en) * | 2008-04-08 | 2009-10-16 | Univ Nat Kaohsiung 1St Univ Sc | Probe for an electric stethoscope |
| CN201341695Y (en) * | 2008-12-08 | 2009-11-11 | 刘海松 | Multifunctional pillow for pregnant women |
| US20100274145A1 (en) * | 2009-04-22 | 2010-10-28 | Tupin Jr Joe Paul | Fetal monitoring device and methods |
| CN201814570U (en) * | 2010-06-13 | 2011-05-04 | 深圳京柏医疗设备有限公司 | System for detecting fetal heart rate |
-
2012
- 2012-09-28 CN CN201210370905.9A patent/CN103705270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200966624Y (en) * | 2006-11-13 | 2007-10-31 | 张为朵 | Two-purpose fetus heart sound monitoring instrument |
| TW200942212A (en) * | 2008-04-08 | 2009-10-16 | Univ Nat Kaohsiung 1St Univ Sc | Probe for an electric stethoscope |
| CN101427920A (en) * | 2008-12-01 | 2009-05-13 | 江南大学 | Wireless monitoring dress system for mother and baby |
| CN201341695Y (en) * | 2008-12-08 | 2009-11-11 | 刘海松 | Multifunctional pillow for pregnant women |
| US20100274145A1 (en) * | 2009-04-22 | 2010-10-28 | Tupin Jr Joe Paul | Fetal monitoring device and methods |
| CN201814570U (en) * | 2010-06-13 | 2011-05-04 | 深圳京柏医疗设备有限公司 | System for detecting fetal heart rate |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104586428A (en) * | 2015-01-04 | 2015-05-06 | 张敏 | Pick device for fetal heartbeat sound |
| CN105708437A (en) * | 2015-08-03 | 2016-06-29 | 美的集团股份有限公司 | Fetal heart monitoring device |
| CN106137168A (en) * | 2016-07-28 | 2016-11-23 | 传世未来（北京）信息科技有限公司 | A kind of fetus monitoring method and foetal monitor |
| CN106491116A (en) * | 2016-11-11 | 2017-03-15 | 深圳市响音科技有限公司 | A kind of passive type fetal rhythm detecting system and detection method |
| CN109106397A (en) * | 2017-06-25 | 2019-01-01 | 吴健康 | A kind of monitoring of fetal heart sound and analysis system |
| CN107157474A (en) * | 2017-06-27 | 2017-09-15 | 西南医科大学 | A kind of portable multiparity's electrocardioscanner and its monitoring method |
| CN107157474B (en) * | 2017-06-27 | 2020-04-28 | 西南医科大学 | Portable multicytosis electrocardioscanner and monitoring method thereof |
| CN108245224A (en) * | 2018-01-30 | 2018-07-06 | 王子坤 | It is a kind of it is easy to carry can Automatic-searching heart Minimally Invasive Surgery pincers |
| CN108245224B (en) * | 2018-01-30 | 2020-07-24 | 济南市第四人民医院 | Minimally invasive surgery forceps convenient to carry and capable of automatically searching heart |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103705270B (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103705270B (en) | Fetal rhythm monitoring equipment | |
| US10238362B2 (en) | Integrated wearable device for detection of fetal heart rate and material uterine contractions with wireless communication capability | |
| EP2230997B1 (en) | An adhesive patch for monitoring acoustic signals | |
| CN102772222B (en) | Electronic stethoscope | |
| CN104053401B (en) | Multifactorial telehealth care pregnancy and birth monitoring | |
| US10736522B2 (en) | Method and terminal for obtaining fetal heart | |
| US20120190303A1 (en) | Cell-phone compatible wireless stethoscope | |
| CN104274210B (en) | Fetal heart monitor and fetal rhythm monitoring method | |
| US11937901B2 (en) | Arteriovenous fistula stenosis detection system and method thereof and sensing device | |
| CN102078201A (en) | Portable wireless electronic stethoscope | |
| WO2016000065A1 (en) | Method and apparatus for monitoring a physiological indication associated with functioning of a living animal | |
| KR101221406B1 (en) | Apparatus for sensing fetal heart sound and system including the same | |
| CN217793115U (en) | Wireless auscultation device | |
| CN204863275U (en) | Child is admired | |
| CN210447058U (en) | Digital physiological sound collector | |
| CN104000567A (en) | Portable multipoint pulse wireless monitoring system | |
| JP2019528138A (en) | Fetal size monitoring system and method | |
| KR101637830B1 (en) | Stethoscope using helmholtz resonance, method for controlling the same and method for manufacturing the same | |
| Degbedzui et al. | Bluetooth-based wireless digital stethoscope with mobile integration | |
| CN106073817A (en) | A kind of based on the portable Intelligent stethoscope of wireless network | |
| CN203138542U (en) | Stethoscope | |
| KR20200002297U (en) | Smart health care device | |
| CN204072144U (en) | A kind of stethoscope | |
| KR101511099B1 (en) | Transducers for measuring for fetal heart sound using smart phones | |
| CN110960206B (en) | Fetal heart identification method, device and system based on multi-sensor array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |