Read by QxMD icon Read


Ming Dai, Xueliang Xiao, Xin Chen, Haoming Lin, Wanqing Wu, Siping Chen
With the increasing aging population as well as health concerns, chronic heart disease has become the focus of public attention. A comfortable, low-powered, and wearable electrocardiogram (ECG) system for continuously monitoring the elderly's ECG signals over several hours is important for preventing cardiovascular diseases. Traditional ECG monitoring apparatus is often inconvenient to carry, has many electrodes to attach to the chest, and has a high-power consumption. There is also a challenge to design an electrocardiograph that satisfies requirements such as comfort, confinement, and compactness...
October 14, 2016: Australasian Physical & Engineering Sciences in Medicine
Naveed Mengal, Iftikhar Ali Sahito, Alvira Ayoub Arbab, Kyung Chul Sun, Muhammad Bilal Qadir, Anam Ali Memon, Sung Hoon Jeong
Textile electrodes are highly desirable for wearable electronics as they offer light-weight, flexibility, cost effectiveness and ease of fabrication. Here, we propose the use of lyocell fabric as a flexible textile electrode because of its inherently super hydrophilic characteristics and increased moisture uptake. A highly concentrated colloidal solution of graphene oxide nanosheets (GONs) was coated on to lyocell fabric and was then reduced in to graphene nanosheets (GNs) using facile chemical reduction method...
November 5, 2016: Carbohydrate Polymers
A D Waldmann, K H Wodack, A März, A Ukere, C Trepte, S H Böhm, D A Reuter
No abstract text is available yet for this article.
December 2015: Intensive Care Medicine Experimental
Maria Papaiordanidou, Seiichi Takamatsu, Shahab Rezaei-Mazinani, Thomas Lonjaret, Alain Martin, Esma Ismailova
Electronic textiles are an emerging field providing novel and non-intrusive solutions for healthcare. Conducting polymer-coated textiles enable a new generation of fully organic surface electrodes for electrophysiological evaluations. Textile electrodes are able to assess high quality muscular monitoring and to perform transcutaneous electrical stimulation.
August 2016: Advanced Healthcare Materials
Fu Shao, Shao-Wei Bian, Quan Zhu, Mei-Xia Guo, Si Liu, Yi-Hang Peng
Vertical polyaniline (PANI) nanowire arrays on graphene-sheet-coated polyester cloth (RGO/PETC) were fabricated by the in situ chemical polymerization of aniline. The 3D conductive network that was formed by the graphene sheets greatly enhanced the conductivity of PANI/RGO/PETC and improved its mechanical stability. PANI nanowire arrays increased the active surface area of PANI, whilst the hierarchically porous structure of the PANI/RGO/PETC electrode facilitated the diffusion of the electrolyte ions. Electrochemical measurements showed that the composite electrode exhibited a maximum specific capacitance of 1293 F g(-1) at a current density of 1 A g(-1) ...
July 5, 2016: Chemistry, An Asian Journal
Toshiyo Tamura, Masaki Sekine, Zunyi Tang, Masaki Yoshida, Yoshinori Takeuchi, Masaharu Imai
We tested a new model that involves monitoring physiological parameters and the use of a rehabilitation training system to improve team-based healthcare. The system consisted of unobtrusive monitoring, a highly efficient database, and interventions by health professionals. This report discusses the core technologies, especially those involved in monitoring, which have been developed. The unobtrusive blood pressure (BP) estimation system, electrocardiogram (ECG), Kinect-based rehabilitation training system, and web-based care system, including its database, were designed and tested separately...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Zunyi Tang, Masaki Sekine, Toshiyo Tamura, Masaki Yoshida, Wenxi Chen
This study presents an unobtrusive cuffless blood pressure (BP) monitoring system for estimating beat-by-beat systolic blood pressure (SBP) in real-time based on pulse transit time (PTT). The system mainly includes an electrocardiograph with three conductive textile electrodes, a pulse monitor with a LED and a photodetector, a control circuit with a Bluetooth module, and a battery, all of which are mounted on a common armchair to measure ECG and photoplethysmography (PPG) signals from users during sitting on the armchair...
2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Tamador Alkhidir, Andrzej Sluzek, Murat Kaya Yapici
In this paper, we have developed a simple method for adaptive out-filtering of the motion artifact from the electrocardiogram (ECG) obtained by using conductive textile electrodes. The textile electrodes were placed on the left and the right wrist to measure ECG through lead-1 configuration. The motion artifact was induced by simple hand movements. The reference signal for adaptive filtering was obtained by placing additional electrodes at one hand to capture the motion of the hand. The adaptive filtering was compared to independent component analysis (ICA) algorithm...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Isabel G Trindade, Frederico Martins, Rúben Dias, Cristina Oliveira, José Machado da Silva
In this article we present a smart textile system for the continuous monitoring of cardiorespiratory signals, produced and integrated with an industrial embroidery unit. The design of a T-shirt system, having embedded textile sensors and interconnects and custom designed circuit for data collection and Bluetooth transmission is presented. The performance of skin-contact textile electrodes, having distinctive electrical characteristics and surface morphologies, was characterized by measurements of signal to noise ratio, under dry and moisture conditions...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Danilo Pani, Alessia Dessi, Elisa Gusai, Jose F Saenz-Cogollo, Gianluca Barabino, Beatrice Fraboni, Annalisa Bonfiglio
UNLABELLED: Despite surface electrodes technology for biopotential recording is well established, different researches are aimed at overcoming the limitations exhibited by the available solutions. In this paper, a proposal for the low-cost development of textile electrodes based on woven fabrics treated with polymer poly-3,4-ethylenedioxythiophene doped with poly(styrene sulfonate) ( PEDOT: PSS), is presented. Compared to other approaches, the proposed one can be exploited on any finished fabric...
2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Antonio Lanata, Andrea Guidi, Paolo Baragli, Rita Paradiso, Gaetano Valenza, Enzo Pasquale Scilingo
This study reports on the implementation of a novel system to detect and reduce movement artifact (MA) contribution in electrocardiogram (ECG) recordings acquired from horses in free movement conditions. The system comprises both integrated textile electrodes for ECG acquisition and one triaxial accelerometer for movement monitoring. Here, ECG and physical activity are continuously acquired from seven horses through the wearable system and a model that integrates cardiovascular and movement information to estimate the MA contribution is implemented...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Liubing Dong, Chengjun Xu, Yang Li, Changle Wu, Baozheng Jiang, Qian Yang, Enlou Zhou, Feiyu Kang, Quan-Hong Yang
High-performance flexible textile electrodes and fiber electrodes are produced simultaneously by a newly proposed effective strategy. Activated carbon fiber cloth (ACFC)/carbon nanotubes (CNTs) and ACFC/MnO2/CNTs composites are designed as high-performance flexible textile electrodes. Theses textiles can also be easily dismantled into individual fiber bundles used as high-performance flexible fiber electrodes.
February 24, 2016: Advanced Materials
Sun Ok Gi, Young-Jae Lee, Hye Ran Koo, Seung Pyo Lee, Kang-Hwi Lee, Kyeng-Nam Kim, Seung-Jin Kang, Joo Hyeon Lee, Jeong-Whan Lee
This research is an extension of a previous research [1] on the different effects of sensor location that is relatively suitable for heart rate sensing. This research aimed to elucidate the causes of wide variations in heart rate measurements from the same sensor position among subjects, as observed in previous research [1], and to enhance designs of the inductive textile electrode to overcome these variations. To achieve this, this study comprised two parts: In part 1, X-ray examinations were performed to determine the cause of the wide variations noted in the findings from previous research [1], and we found that at the same sensor position, the heart activity signal differed with slight differences in the positions of the heart of each subject owing to individual differences in the anatomical heart location...
December 2015: Journal of Medical Systems
Antonio Lanata, Andrea Guidi, Paolo Baragli, Gaetano Valenza, Enzo Pasquale Scilingo
This study reports on a novel method to detect and reduce the contribution of movement artifact (MA) in electrocardiogram (ECG) recordings gathered from horses in free movement conditions. We propose a model that integrates cardiovascular and movement information to estimate the MA contribution. Specifically, ECG and physical activity are continuously acquired from seven horses through a wearable system. Such a system employs completely integrated textile electrodes to monitor ECG and is also equipped with a triaxial accelerometer for movement monitoring...
2015: PloS One
Antoni Ivorra, Laura Becerra-Fajardo, Quim Castellví
OBJECTIVE: It is possible to develop implantable microstimulators whose actuation principle is based on rectification of high-frequency (HF) current bursts supplied through skin electrodes. This has been demonstrated previously by means of devices consisting of a single diode. However, previous single diode devices caused dc currents which made them impractical for clinical applications. Here flexible thread-like stimulation implants which perform charge balance are demonstrated in vivo...
December 2015: Journal of Neural Engineering
Seiichi Takamatsu, Thomas Lonjaret, Dakota Crisp, Jean-Michel Badier, George G Malliaras, Esma Ismailova
Wearable sensors are receiving a great deal of attention as they offer the potential to become a key technological tool for healthcare. In order for this potential to come to fruition, new electroactive materials endowing high performance need to be integrated with textiles. Here we present a simple and reliable technique that allows the patterning of conducting polymers on textiles. Electrodes fabricated using this technique showed a low impedance contact with human skin, were able to record high quality electrocardiograms at rest, and determine heart rate even when the wearer was in motion...
2015: Scientific Reports
Danilo Pani, Alessia Dessi, Jose F Saenz-Cogollo, Gianluca Barabino, Beatrice Fraboni, Annalisa Bonfiglio
GOAL: To evaluate a novel kind of textile electrodes based on woven fabrics treated with PEDOT: PSS, through an easy fabrication process, testing these electrodes for biopotential recordings. METHODS: Fabrication is based on raw fabric soaking in PEDOT: PSS using a second dopant, squeezing and annealing. The electrodes have been tested on human volunteers, in terms of both skin contact impedance and quality of the ECG signals recorded at rest and during physical activity (power spectral density, baseline wandering, QRS detectability, and broadband noise)...
March 2016: IEEE Transactions on Bio-medical Engineering
Hui Zhou, Yi Lu, Wanzhen Chen, Zhen Wu, Haiqing Zou, Ludovic Krundel, Guanglin Li
Textile electrodes are becoming an attractive means in the facilitation of surface electrical stimulation. However, the stimulation comfort of textile electrodes and the mechanism behind stimulation discomfort is still unknown. In this study, a textile stimulation electrode was developed using conductive fabrics and then its impedance spectroscopy, stimulation thresholds, and stimulation comfort were quantitatively assessed and compared with those of a wet textile electrode and a hydrogel electrode on healthy subjects...
2015: Sensors
Laura Becerra-Fajardo, Antoni Ivorra
Electrical stimulation is used in order to restore nerve mediated functions in patients with neurological disorders, but its applicability is constrained by the invasiveness of the systems required to perform it. As an alternative to implantable systems consisting of central stimulation units wired to the stimulation electrodes, networks of wireless microstimulators have been devised for fine movement restoration. Miniaturization of these microstimulators is currently hampered by the available methods for powering them...
2015: PloS One
Hong Ji Lee, Su Hwan Hwang, Hee Nam Yoon, Won Kyu Lee, Kwang Suk Park
In this study, we developed and tested a capacitively coupled electrocardiogram (ECG) measurement system using conductive textiles on a bed, for long-term healthcare monitoring. The system, which was designed to measure ECG in a bed with no constraints of sleep position and posture, included a foam layer to increase the contact region with the curvature of the body and a cover to ensure durability and easy installation. Nine healthy subjects participated in the experiment during polysomnography (PSG), and the heart rate (HR) coverage and heart rate variability (HRV) parameters were analyzed to evaluate the system...
2015: Sensors
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"