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Live Demonstration: An Intelligent Stethoscope with ECG and Heart Sound Synchronous Display

Authors:
Yu-Jin Lin
Yu-Jin Lin
Yu-Jin Lin
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Chen-Wei Chuang
Chen-Wei Chuang
Chen-Wei Chuang
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Chun-Yueh Yen
Chun-Yueh Yen
Chun-Yueh Yen
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Sheng-Hsin Huang
Sheng-Hsin Huang
Sheng-Hsin Huang
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Live Demonstration:An Intelligent Stethoscope
with ECG and Heart Sound Synchronous Display
Yu-Jin Lin
1
, Chen-Wei Chuang
1
, Chun-Yueh Yen
1
, Sheng-Hsin Huang
1
, Ju-Yi Chen
2
and Shuenn-Yuh Lee
1
1
Department of Electronic Engineering, National Cheng Kung University, Tainan, Taiwan
2
Department of Internal Medicine, National Cheng Kung University Hospital, Tainan, Taiwan
Email: jerry71520@gmail.com, ieesyl@mail.ncku.edu.tw
Abstract—This paper proposed an intelligent stethoscope,
which can not only visualize the heart sound signal, but also
measure human’s electrocardiogram (ECG) and heart sound
simultaneously. With an internet of things (IoT) system and a
cloud database, the stethoscope can be used in hospitals and
telemedicine. The proposed stethoscope includes three parts, a
front-end device for ECG and heart sound measurement, a
smart device’s APP and a cloud server. The ECG-measuring
device is designed for single lead measurement and it has low
power consumption as well as IoT-based design, which can
send the real-time ECG data to the smart device’s APP. On the
other hand, the heart-sound-measuring device keeps the
traditional stethoscope head, in order to ensure doctors can be
used to the heart sound signal from this proposed stethoscope.
Furthermore, it is attached an analog front-end circuit and a
microphone, to filter the environmental noise and record the
sound signal. At the end, the heart sound signal will be
transmitted to the APP through the module of Bluetooth Low
Energy (BLE). The APP on smart device can display the
synchronized and real-time signals including ECG and heart
sound. Meanwhile, those signals will be recorded in smart
devices and uploaded to the cloud server, where doctors and
users can further monitor the data. The cloud server can not
only store the past signals, but also realize telemedicine
through the web user interface. The proposed intelligent
stethoscope has been conducted human trials in the National
Cheng Kung University Hospital.
I. D
EMONSTRATION
S
ETUP
For the demonstration, our team will bring the proposed
intelligent stethoscope prototypes, smartphone, tablet and
laptop, as shown in Fig. 1. The size of these proposed
intelligent stethoscope prototypes are 81.69mm * 45.73mm *
23mm and 85.05mm * 30.36mm * 18.55mm, individually.
The intelligent stethoscope will be wirelessly connected with
smartphones or tablets by Bluetooth, in order to displaying
the real-time electrocardiogram (ECG) and heart sound
signals, simultaneously, which can help physician to
diagnose the heart failure on health examination.
Furthermore, to meet the scenario of telemedicine, the web
user interface is also available on this demonstration to
display subject’s ECG and heart sound signals, which can be
accessed by health-care workers by anytime and anywhere to
monitor the cardiovascular disease.
II. V
ISITOR
E
XPERIENCE
The live demonstration is based on submitted 2019
ISCAS concurrent full paper [1]. Our team will demo how to
finish a full measurement of ECG and heart sound signals by
the proposed intelligent stethoscope. Participants who may
interest can have the measurement by themselves using the
devices of intelligent stethoscope. Meanwhile, the
cardiologist expert in our team will describe the relationship
between ECG and heart sound signals. It is expected that
participants can have a practical measurement and an
overview of those bio-signals, as shown in the attached video
[2]. In addition, participants will not only understand the
difference between the conventional stethoscope and the
proposed intelligent stethoscope, but also know how to use
this intelligent stethoscope on health examination. In this
demonstration, we hope to bring participants the knowledge
includes the biomedicine, the cardiovascular disease related
to heart sound, internet of things, wearable devices and the
cloud server for telemedicine.
R
EFERENCES
[1] Yu-Jin Lin, Chen-Wei Chuang, Chun-Yueh Yen, Sheng-Hsin Huang,
Ju-Yi Chen, and Shuenn-Yuh Lee, “Intelligent Stethoscope with ECG
and Heart Sound Synchronous Display,” accepted by 2019 IEEE
International Symposium on Circuits and Systems (ISCAS), May
2019.
[2] Video link : https://youtu.be/ysFCrM-cJTA.
Fig 1. The proposed demonstration setup
ECG Measuring Device
Heart Sound Measuring Device
APP User Interface
Fig 2. The actual intelligent stethoscope measurement
978-1-7281-0397 -6/19/$31.00 ©2019 IEEE
... A wireless stethoscope referred in [20] speaks about transferring heart sounds and ECG measurement through BLE to be visualized in a mobile using APP. It uses single lead for ECG measurement. ...
... So, for young doctors this intelligent stethoscope can be a game changer to their profession as it can help them detect irregularities more accurately and enhance their auscultation skills. [20] ...
View
... Hz [13]. Can be seen also on High Pass Filter data table that the frequency is below the cutoff has a small output as well as table data Low Pass Filter that the frequency above the cutoff has an output that is small [22][23] [24]. In this study, the researcher used an input of 4.4 volts [25], Cardiac signals that are captured and processed by the device This electric stethoscope is successfully displayed on the PC display and sending signals to the Bluetooth headset and the user can select the signal to be transmitted to the Bluetooth headset [27]. ...
Analysis of the Effectiveness of Using Digital Filters in Electronic Stethoscopes
Article
Full-text available
  • Oct 2022
The heart sound produced in some cases of the disease shows a certain pattern. The purpose of this study was to design an electronic stethoscope for cardiac auscultation with the following display. The contribution in this study is being able to show certain patterns that can be diagnosed in the sound signal. So that the pattern can be known when there is a heart disease disorder, an electronic stethoscope will be made for auscultation of the next display, making it easier for users to diagnose heart disease. The heart sound is obtained from the mechanical activity of the heart which is tapped by a condenser mic. The heart sound will be held in a pre-amp circuit, then the filters used are High Pass Filters and Low Pass Filters with an interrupted frequency of 20-95 Hz. The output of the filter circuit will enter the booster circuit. Then it will be processed by the microcontroller. In processing the data that will be displayed on Nextion and Speaker, the author uses Arduino Mega. Based on the test, it can be seen that the digital filter has a slight error rate because it removes the most noise, while in the analog filter there is still a lot of noise. The results of the research that has been done can be implemented using a system that really supports the needs.
View
... In a digital stethoscope, the traditional acoustic transducer is replaced with a digital microphone sensor inside the bell-shaped acoustic stethoscope. It feeds signals to an analog-to-digital converter for heart sound acquisition [3]. The design includes preamplification and filter circuits to amplify heart sounds and improve the signal quality. ...
Novel Design of a Multimodal Technology-Based Smart Stethoscope for Personal Cardiovascular Health Monitoring
Article
Full-text available
Heart sounds and heart rate (pulse) are the most common physiological signals used in the diagnosis of cardiovascular diseases. Measuring these signals using a device and analyzing their interrelationships simultaneously can improve the accuracy of existing methods and propose new approaches for the diagnosis of cardiovascular diseases. In this study, we have presented a novel smart stethoscope based on multimodal physiological signal measurement technology for personal cardiovascular health monitoring. The proposed device is designed in the shape of a compact personal computer mouse for easy grasping and attachment to the surface of the chest using only one hand. A digital microphone and photoplehysmogram sensor are installed on the bottom and top surfaces of the device, respectively, to measure heart sound and pulse from the user’s chest and finger simultaneously. In addition, a high-performance Bluetooth Low Energy System-on-Chip ARM microprocessor is used for pre-processing of measured data and communication with the smartphone. The prototype is assembled on a manufactured printed circuit board and 3D-printed shell to conduct an in vivo experiment to test the performance of physiological signal measurement and usability by observing users’ muscle fatigue variation.
View
... Suspected patients having heart problem is then referred to specialist for an ECG (electrocardiogram) or an echocardiogram, or nuclear magnetic resonance imaging. Since these techniques are very high cost, it is preferable to have a reliable and low-prize screening tool for making a right primary diagnosis [10]. ...
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