Read by QxMD icon Read

Journal of Medical Engineering & Technology

Mohammed Attia, Mona F Taher, Aliaa Rehan Youssef
Lateral ankle sprain is one of the most common ankle injuries, especially in sports. When not treated properly, chronic ankle instability (CAI) may develop causing recurrent sprains and permanent damage to ankle ligaments. In this study, the design, implementation and validation of a smart wearable device connected to a smartphone application is described. This device can predict and prevent the occurrence of ankle sprain. Prediction of potentially harmful motion is achieved by continuous monitoring of ankle kinematics using inertial motion sensors...
January 16, 2019: Journal of Medical Engineering & Technology
Naseer Hameed Hamza
One method of removing malignant tissues from human organs is radiofrequency ablation. Thermal radiofrequency is a common technique of liver tumour therapy, which depends mainly on heating the infected region. This work proposes to investigate the thermal issue, which - in instance of excessive current - leads to extra lesion in liver tissues. However, the thermal lesions and the mistakes occurred in positioning the trocar instrument in the correct and accurate place arise the need to simulate and prediction of the thermal and electrical behaviour of the ablation operation...
January 4, 2019: Journal of Medical Engineering & Technology
Joseph M Mahoney, Zackery E Scalyer, Matthew B Rhudy
BACKGROUND: Reliable step counting is a critical part of locomotion research. Current counting methods can be inaccurate, time consuming, expensive or encumbering to the subject. Here, we present a camera-based optical method for automatically counting steps. METHODS: Fifteen healthy adults walked, jogged and ran on a treadmill at three different constant speeds (1.21, 2.01, 2.68 m/s) and once at varying speed (1.21-2.68 m/s) for 90 s. Subjects had visual marker affixed to their left foot while walking...
January 4, 2019: Journal of Medical Engineering & Technology
K B Karthikeyan, V Nithya
We report the development of a rigid link surgical instrument for surgical robotics. The device is only 5 mm in diameter and equipped with a shape memory alloy for better gripping, which avoids the use of mechanical gears. This ultra-thin instrument has a unique force sensor mount at the gripper to capture forces as low as 288 mN from the surgical site. The gripper is controlled by a 0.5 mm cable that drives the 3-Degrees of Freedom movement for the dexterity. This mechanically robust instrument can pave the way for the realisation of compact and low cost surgical instruments for real world applications in medical robotics...
January 4, 2019: Journal of Medical Engineering & Technology
Yuhui Shi, Theodosios Korakianitis, Zhongjian Li, Yubing Shi
Mock circulatory test rig (MCTR) is the essential and indispensable facility in the cardiovascular in vitro studies. The system configuration and the motion profile of the MCTR design directly influence the validity, precision, and accuracy of the experimental data collected. Previous studies gave the schematic but never describe the structure and motion design details of the MCTRs used, which makes comparison of the experimental data reported by different research groups plausible but not fully convincing...
November 30, 2018: Journal of Medical Engineering & Technology
Ali Bulent Usakli, Serkan Gurkan, Guray Gurkan, Alper Kaya
In this study, a new electrooculography (EOG) based system that provides efficient communication for people suffered from motor neuron diseases is presented. The system consists of two distinct devices. The first device operates as a main unit that is activated by the subject's eye movements. This unit is capable of transmitting 10 different command/state messages. These messages enable subject to choose his/her situation such as "I'm fine", "I feel bad", "I'm hungry" and "I'm thirsty"...
November 22, 2018: Journal of Medical Engineering & Technology
A Sharmila
Over many decades, research is being attempted for the detection of epileptic seizure to support for automatic diagnosis system to help clinicians from burdensome work. In this respect, an enormous number of research papers is published for identification of epileptic seizure. It is difficult to present a detailed review of all these literature. Therefore, in this paper, an attempt has been made to review the detection of an epileptic seizure. More than 100 research papers have been discussed to discern the techniques for detecting the epileptic seizure...
November 22, 2018: Journal of Medical Engineering & Technology
Cláudia de Almeida Ferreira Diniz, Marcus Vinícius Faleiro de Andrade, Bruno Philip Alves da Silva, Maria Lúcia Machado Duarte, Lázaro Valentin Donadon, Ricardo Guimarães, Márcia Guimarães
A simple, low cost and easy-to-operate 3D stereophotogrammetry system was developed to measure the kinematic pattern of head stabilisation during visual tasks. The system differs from commercially available ones since it: (a) takes into account the gaze motor coordination characteristics and measures the head translations quantified at the point that best represents the translations caused by the eyes' movement during visual tasks, that is, the midpoint between the eyes; (b) offers minimum restriction to the head movement and minimum interference with it; (c) innovates when using the position coordinates produced by a free-online tracker software...
November 22, 2018: Journal of Medical Engineering & Technology
José Rocha Ferreira, Nannan Song, Margarida Machado, Luís Machado, André Correia, Ana Reis
This is an in vitro study composed by a fatigue test followed by an optical microscopy analysis. Dynamic abutments concept, recently introduced on screw-retained implant dental prosthesis, consists on the screw channel customisation according to the individual needs of each rehabilitation. Geometry and tightening torque differences advise the assessment of their mechanical performance. Clarify whether the combination of dynamic and conventional abutments in a three-unit implant-fixed prosthesis has detrimental effects either on the mechanical performance under cyclic loading or on the implant-abutment microgap dimensions...
November 13, 2018: Journal of Medical Engineering & Technology
Srinivas Kuntamalla, Ram Gopal Reddy Lekkala
Currently, heartbeat intervals required for the analysis of heart rate variability (HRV) are derived from electrocardiogram (ECG). Many investigators have explored the possibility of using photoplethysmography (PPG), for the analysis of HRV. However, all these studies are based on statistical approach and have used the correlation coefficient for the comparison of HRV data obtained using ECG and PPG, which is inappropriate as the causal relationship between the R-peaks in ECG and the systolic peaks in PPG is well known in physiology...
October 16, 2018: Journal of Medical Engineering & Technology
Ian J S Boddy, Simon Fulford, Charlotte R Kemp
Patients with a spinal cord injury above the 6th thoracic vertebrae may be prone to autonomic dysreflexia (AD) in response to bladder stimulus associated with a urodynamics investigation. It is essential that these patients are managed carefully in the urodynamics clinic in order to prevent life-threatening hypertension and bradycardia. Part of this management is the measurement and manual recording of pulse rate (PR) and non-invasive blood pressure (NIBP), alongside the standard urodynamics data set. The purpose of recording these additional data is to identify the characteristic drop in PR and rise in NIBP that indicates the onset of AD...
October 16, 2018: Journal of Medical Engineering & Technology
Zheng Fang, Zheng Yang, Qian Wang, Chao Wang, Siyuan Chen
Gait analysis is important for lower limb movement evaluation and rehabilitation research. More and more laboratories focus on it. Researchers need biomechanical data sampling equipment to obtain original signals for their analysis, sometimes even need kinds of signals for data fusion processing. But, the market supply of relative products is very limited. Moreover, one device acquires only one kind of signal, and needs computer as the control centre. So, there are two problems: moving range limitation, and synchronisation in data fusion processing...
October 16, 2018: Journal of Medical Engineering & Technology
Shona Michael, Tapiwa Marvin Mapunde, Nick Elgar, Joel Brown
The objectives of this study were, for a large NHS Trust, to (1) Implement a medical devices training information system which connects the medical equipment inventory to the electronic staff record. (2) Monitor the changes in safety-related practice in the Trust after implementation (3) Examine the association between training compliance and Trust-wide adverse incident data for high risk medical devices. (4) Identify possible gaps in training course content from adverse incident data. A new system was made available, showing medical devices training records for staff in each location...
September 25, 2018: Journal of Medical Engineering & Technology
Meena Gupta, Bablu Lal Rajak, Dinesh Bhatia, Arun Mukherjee
BACKGROUND: Neuromodulation is emerging as a new therapeutic field towards treatment of neurological disorders through advances in medical devices. Repetitive Transcranial Magnetic Stimulation (rTMS) is one such neuromodulatory device that has received increasing interest as a tool for modulating cortical excitability that influence motor activity in both normal and diseased population. However, the therapeutic effect of rTMS varies depending on stimulation frequency, intensity, pulse trains, duration, etc...
September 3, 2018: Journal of Medical Engineering & Technology
(no author information available yet)
No abstract text is available yet for this article.
July 2018: Journal of Medical Engineering & Technology
Marcelo Coelho Goiato, Guilherme Sarauza Arsufi, Rodrigo Antonio de Medeiros, Aldiéris Alves Pesqueira, Emily Vivianne Freitas da Silva, Mariana Vilela Sonego, Daniela Micheline Dos Santos
In some clinical situations, the clinician may encounter previously installed implants that should be associated with other implants for a proper rehabilitation. The aim of this study was to evaluate the biomechanical behaviour of a multiple prosthesis joined by different implant connections using photoelasticity. Photoelastic models with a screwed fixed prosthesis supported by implants with different connection systems (Morse taper, external hexagon, internal hexagon, and Flexcone), and different combinations among them, were fabricated...
July 2018: Journal of Medical Engineering & Technology
Shanti Chandra, Ambalika Sharma, Girish Kumar Singh
This paper deals with new approaches to analyse electrocardiogram (ECG) signals for extracting useful diagnostic features. Initially, elimination of different types of noise is carried out using maximal overlap discrete wavelet transform (MODWT) and universal thresholding. Next, R-peak fiducial points are detected from these noise free ECG signals using discrete wavelet transform along with thresholding. Then, extraction of other features, viz., Q waves, S waves, P waves, T waves, P wave onset and offset points, T wave onset and offset points, QRS onset and offset points are identified using some rule based algorithms...
May 2018: Journal of Medical Engineering & Technology
S G Caliskan, M Polatli, M D Bilgin
Chronic obstructive pulmonary disease (COPD) is one of the causes of mortality worldwide with an increasing prevalence. Heart rate variability (HRV) reflects the regulation mechanism of the cardiac activity by the autonomic nervous system. The assessment of HRV by using nonlinear methods is more sensitive for the detection of complexity when compared to linear methods. This study aims to get information about the autonomic dysfunction occurred in patients with COPD by analysing the complexity of HRV. Electrocardiogram signals recorded from healthy subjects, patients with moderate COPD and severe COPD (eight subjects per group) were analysed...
May 2018: Journal of Medical Engineering & Technology
A St-Laurent, M M Mony, M È Mathieu, S M Ruchat
Physical activity (PA) is a part of a healthy pregnancy. To date, no consumer-based activity monitors have been validated with this population. The aim of this study was to validate the Fitbit Zip and Fitbit Flex monitors in free-living conditions with pregnant women using the ActiGraph GT3X as the ?gold standard?. We compared the accuracy of the Fitbit Zip and Fitbit Flex devices in measuring steps, sedentary time and time spent in different activity intensities. Sixteen women in their third trimester of pregnancy wore the ActiGraph GT3X (hip) plus one Fibit Zip (hip) and one Fitbit Flex (wrist) during seven consecutive days...
May 2018: Journal of Medical Engineering & Technology
Jiawen Liu, Paul Chappell, Neil White
Functional prosthetics hands which have the ability to help amputees perform tasks in daily life have been developed over many years. These hands need a control system which is fed information from sensors mounted on a prosthetic hand and human-machine interface. A variety of sensors therefore been developed for the prosthetic hand to measure fingertip force, joint angle (position), object slip, texture and temperature. However, most of the strain/stress sensors are attached to the fingertip. In this paper, the potential positions for strain sensors on the side of the finger link of the prosthetic hand are investigated that, in the future, will allow for force control in a lateral or key grip...
May 2018: Journal of Medical Engineering & Technology
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"