Wearable mobile ear-based ECG monitoring device using graphene-coated sensors

Celik, Numan; Balachandran, W.; Manivannan, Nadarajah; Winter, Eva-Maria; Schnalzer, Bianca; Burgsteiner, Harald

doi:10.1109/icsens.2017.8233911

Cited by 12 publications

(8 citation statements)

References 7 publications

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“…The power consumption of this sensor was estimated as 350 uA, higher than the 300 uA drawn by the analog front-end used in our system (including external passive components). The wearable device presented by Celik et al [40] uses graphene-coated electrodes attached behind the ear, upper neck, and left arm. The electrodes are wired to a measurement module placed on the arm.…”

Section: Discussionmentioning

confidence: 99%

“…The system proposed in [41] has the advantage of acquiring photoplethysmographic (PPG) and ECG signals simultaneously but is less portable, harder to set up, and does not offer wireless communication, keeping the user connected to a computer via USB port. It is worthwhile to note that none of the last-mentioned systems is capable of stand-alone operation, requiring a computer [41] or mobile phone [40] continuously connected for ECG data storing or monitoring, while stand-alone operation is an advantage found in our design.…”

Section: Discussionmentioning

confidence: 99%

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Arm-ECG Wireless Sensor System for Wearable Long-Term Surveillance of Heart Arrhythmias

2019

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This article presents the devising, development, prototyping and assessment of a wearable arm-ECG sensor system (WAMECG1) for long-term non-invasive heart rhythm monitoring, and functionalities for acquiring, storing, visualizing and transmitting high-quality far-field electrocardiographic signals. The system integrates the main building blocks present in a typical ECG monitoring device such as the skin surface electrodes, front-end amplifiers, analog and digital signal conditioning filters, flash memory and wireless communication capability. These are integrated into a comfortable, easy to wear, and ergonomically designed arm-band ECG sensor system which can acquire a bipolar ECG signal from the upper arm of the user over a period of 72 h. The small-amplitude bipolar arm-ECG signal is sensed by a reusable, long-lasting, Ag–AgCl based dry electrode pair, then digitized using a programmable sampling rate in the range of 125 to 500 Hz and transmitted via Wi-Fi. The prototype comparative performance assessment results showed a cross-correlation value of 99.7% and an error of less than 0.75% when compared to a reference high-resolution medical-grade ECG system. Also, the quality of the recorded far-field bipolar arm-ECG signal was validated in a pilot trial with volunteer subjects from within the research team, by wearing the prototype device while: (a) resting in a chair; and (b) doing minor physical activities. The R-peak detection average sensibilities were 99.66% and 94.64%, while the positive predictive values achieved 99.1% and 92.68%, respectively. Without using any additional algorithm for signal enhancement, the average signal-to-noise ratio (SNR) values were 21.71 and 18.25 for physical activity conditions (a) and (b) respectively. Therefore, the performance assessment results suggest that the wearable arm-band prototype device is a suitable, self-contained, unobtrusive platform for comfortable cardiac electrical activity and heart rhythm logging and monitoring.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Arm-ECG Wireless Sensor System for Wearable Long-Term Surveillance of Heart Arrhythmias

2019

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“…Towards this goal, a novel sensor system was developed by coating graphene platelets onto the surface of the lens of an infrared thermopile sensor using a drop-casting technique to increase the accuracy of the temperature measurements. It is known that graphene is a highly conductive material and it has been demonstrated that the electromechanical characteristics of composite materials can be enhanced in such biomedical applications [ 11 , 12 ]. Furthermore, it has been determined that, with an absorbance of nearly 2.3%, graphene shows a strong optical absorption in the infrared range due to intraband transitions [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Core Body Temperature Using Graphene-Inked Infrared Thermopile Sensor

Celik

Balachandran

2018

Sensors

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Continuous and reliable measurements of core body temperature (CBT) are vital for studies on human thermoregulation. Because tympanic membrane directly reflects the temperature of the carotid artery, it is an accurate and non-invasive method to record CBT. However, commercial tympanic thermometers lack portability and continuous measurements. In this study, graphene inks were utilized to increase the accuracy of the temperature measurements from the ear by coating graphene platelets on the lens of an infrared thermopile sensor. The proposed ear-based device was designed by investigating ear canal geometry and developed with 3D printing technology using the Computer-Aided Design (CAD) Software, SolidWorks 2016. It employs an Arduino Pro Mini and a Bluetooth module. The proposed system runs with a 3.7 V, 850 mAh rechargeable lithium-polymer battery that allows long-term, continuous monitoring. Raw data are continuously and wirelessly plotted on a mobile phone app. The test was performed on 10 subjects under resting and exercising in a total period of 25 min. Achieved results were compared with the commercially available Braun Thermoscan, Original Thermopile, and Cosinuss One ear thermometers. It is also comprehended that such system will be useful in personalized medicine as wearable in-ear device with wireless connectivity.

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“…[21 ] Remote patient geti6n Human approach (Van Wilson. Wentzel and Van Gemert-Pijnen, 2013) [22] Intervention measures Participatory and multidisciplinary method (Celik et al, 2017) [23] Mobile ECG Technological approach (Verhees, Van Kuijk and Simonse, 2018) [24] Point-of-care testing through eHealth Business model (Almeida. Almeida and Figueiredo-Braga, 2018) [25] Mobile solutions for depression Multidisciplinary approach (Sousa et al, 2018) [26] Platform to support the care and assistance of older adults Participatory approach (Monteiro et al, 2019) [27] Cloud-based electronic health system Technological approach (Shanin et al, 2018) [28] Using the Internet of things to monitor patients Technological approach (Shivakumar, Arora and Mani, 2018) [1] Universal electrochemical reader System method (Monton et al, 2018) [29] Integrated wearable sensor Technological approach (Shokrekhodaei et al, 2018) [30] Heart rate monitor Technological approach (García et al, 2018) [31] Stroke detection application Technological approach (Celesti et al, 2019) [32] Cloud computing system Technological approach (Bedson et al, 2019) [2] Pain monitoring application Human approach (Vossebeld et al, 2019) [33] Electronic medical record for nurses Technology acceptance (Pierleoniet al, 2019) [34] Atrial fibrillation monitoring Technological approach (Vitabile et al, 2019) [3] Remote processing and analysis of clinical data for health care purposes Technological approach (Rihana, 2019) [4] Vital signs monitoring Technology and human methods (Domingues et al, 2019) [35] Remote gait analyzer Technological approach (Kildea et al, 2019) [5] Person-centered patient portal Participatory approach…”

Section: Analysis Of Electronic Equipment Development Methodsmentioning

confidence: 99%

Systematic-interdisciplinary approach to eHealth equipment design

Espinoza-Bautista

Álvarez-Ballesteros

Arellano

et al. 2021

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<p>EHealth has improved the performance of multiple health systems worldwide by integrating Information and Communication Technologies (ICTs) into national (structured and coordinated) strategies in the health sector. However, once the foundation is laid for the development and implementation of eHealth solutions, researchers, engineers, doctors and other stakeholders have no single way to develop eHealth solutions. Therefore, a systematic interdisciplinary method is proposed to design electronic health equipment to meet the requirements and needs of all people involved in the use of the equipment, and comply with the laws and regulations of different countries.</p><p>On the basis of systematic and interdisciplinary methods, a method is proposed, that is, the collaborative use of different systematic methods allows stakeholders to continue to cooperate and share the experience. Consequently, the method will allow the design of eHealth devices that, regardless of their use, meet the needs of the user, the requirements of the personnel who will use them, the standards and regulations of the country where they are developed, and provide total satisfaction with the device. Finally, the eHealth solution is designed through systematic thinking, through the analysis of needs and needs, and through exploring different perspectives, observation backgrounds, participant participation, discussion and stakeholder consistency, so as to provide a sustainable product that meets all participants.</p>

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Wearable mobile ear-based ECG monitoring device using graphene-coated sensors

Cited by 12 publications

References 7 publications

Arm-ECG Wireless Sensor System for Wearable Long-Term Surveillance of Heart Arrhythmias

Arm-ECG Wireless Sensor System for Wearable Long-Term Surveillance of Heart Arrhythmias

Measurement of Core Body Temperature Using Graphene-Inked Infrared Thermopile Sensor

Systematic-interdisciplinary approach to eHealth equipment design

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