journal
Journals Journal of Medical Engineering...

Journal of Medical Engineering & Technology

https://read.qxmd.com/read/32597695/custom-made-3d-printed-masks-for-children-using-non-invasive-ventilation-a-feasibility-study-of-production-method-and-testing-of-outcomes-in-adult-volunteers
#21
Matt Willox, Peter Metherall, Katherine Jeays-Ward, Avril D McCarthy, Nicki Barker, Heath Reed, Heather E Elphick
Non-invasive ventilation (NIV) is assisted mechanical ventilation delivered via a facemask for people with chronic conditions that affect breathing. NIV is most commonly delivered via an interface (mask) covering the nose (nasal mask) or the nose and mouth (oronasal mask). The number of children in the UK requiring NIV is currently estimated to be around 5000. Mass-produced masks are available for both the adult and paediatric markets but masks that fit well are difficult to find for children who are small or have asymmetrical facial features...
July 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32404012/measurement-latency-significantly-contributes-to-reduced-heart-rate-measurement-accuracy-in-wearable-devices
#22
Morten Pallisgaard Støve, Rasmus Steengaard Holm, Anne Sofie Kjaersgaard, Kristian Duncker, Mie Ravn Jensen, Birgit Tine Larsen
The purpose of this study was to determine the extent to which measurement latency has significance for the accuracy of heart rate (HR) measured by wearable devices during physical activities. Thirty participants (15 female) aged 18-50 years (mean 24.8, 6.3 SD years) with weight ranging from 53-87 kg (mean 70.5, 9.4 SD kg) participated in this cross-sectional study. Participants completed three submaximal exercise conditions; cycling, treadmill walking/running and rapid arm movements. During the exercises, HR was concurrently measured using the Polar H10 (PL), the Apple Watch 2 (AW) and the Garmin Forerunner 235 (GF)...
May 14, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32401568/design-and-development-of-a-digital-stethoscope-encapsulation-for-simultaneous-acquisition-of-phonocardiography-and-electrocardiography-signals-the-smartheart-case-study
#23
Ricardo Baptista, Hugo Silva, Miguel Rocha
The stethoscope is a major symbol of modern medicine. It is used for diagnosis of different conditions and enables physicians to listen to internal body sounds. Electrocardiography was only introduced in medicine in the beginning of the twentieth century. Today measuring heart's electrical activity is also fundamental cardiac diseases diagnosis. Although performed with independent devices, requiring physician and patient presence in the same physical space, in combination they enhance cardiovascular assessment...
May 13, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32401550/involvement-of-the-open-source-community-in-combating-the-worldwide-covid-19-pandemic-a-review
#24
John Scott Frazer, Amelia Shard, James Herdman
The ongoing COVID-19 pandemic is unprecedented in the modern age both due to its scale and its disruption to daily life throughout the world. Widespread social isolation and restrictions in the age of modern communicative technology, coupled with some early successes for makers, have united the open-source community towards a common goal in a way not previously seen. Local hospitals and care facilities are turning to makers to print essential consumable parts, such as simple visors, while in the hardest hit areas, critical pieces of medical technology are being fabricated...
May 13, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32401543/tissue-engineering-applications-in-breast-cancer
#25
Mozaffar Mahmoodi, Shirin Ferdowsi, Somayeh Ebrahimi-Barough, Shaghayegh Kamian, Jafar Ai
In Iran, breast cancer (BC) is the most prevalent cancer among women. The standard treatment for this cancer is partial or total removal of breast tissue, followed by chemotherapy and radiation. Tissue engineering (TE) has made new treatments for tissue loss in these patients by creating functional substitutes in the laboratory. In addition, cancer biology combined with TE provides a new strategy for evaluation of anti-BC therapy. Several innovations in TE have led to the design of scaffold or matrix based culture systems that more closely mimic the native extracellular matrix (ECM)...
May 13, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32396756/investigating-the-performance-of-an-amplitude-independent-algorithm-for-detecting-the-hand-muscle-activity-of-stroke-survivors
#26
Husamuldeen Khalid Hameed, Wan Zuha Wan Hasan, Suhaidi Shafie, Siti Anom Ahmad, Haslina Jaafar, Liyana Najwa Inche Mat
To make robotic hand devices controlled by surface electromyography (sEMG) signals feasible and practical tools for assisting patients with hand impairments, the problems that prevent these devices from being widely used have to be overcome. The most significant problem is the involuntary amplitude variation of the sEMG signals due to the movement of electrodes during forearm motion. Moreover, for patients who have had a stroke or another neurological disease, the muscle activity of the impaired hand is weak and has a low signal-to-noise ratio (SNR)...
May 12, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32367762/translational-development-and-pre-clinical-evaluation-of-prototype-gastrointestinal-mock-up-devices-only-robotic-placement-of-plastic
#27
Jonas F Schiemer, Dana Merchel, Karen Stumm, Klaus-Peter Hoffmann, Jan Baumgart, Werner Kneist
Background : The aim of this study was to address the vision of wireless theranostic devices distributed along the gastrointestinal (GI) tract by defining design requirements, developing prototype mock-ups, and establishing a minimally invasive surgical approach for the implantation process. Methods : Questionnaires for contextual analysis and use case scenarios addressing the technical issues of an implantable GI device, a possible scenario for implantation, preparation and calibration of a device, and therapeutic usage by professionals and patients were completed and discussed by an interdisciplinary team of surgeons, engineers, and product designers...
May 5, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32568627/new-synthetic-mitral-valve-model-for-human-prolapsed-mitral-valve-reconstructive-surgery-for-training
#28
Dylan Goode, Sevda Mohammadi, Ray Taheri, Hadi Mohammadi
The training process of young surgeons is highly desirable in order for them to gain an understanding of the quality of care and patient safety required during cardiac surgeries, however, it may take a few years of practice in order for them to properly develop these skills. Artificial life-like platforms and models are extremely recommended for teaching hands-on and real-world practice in both junior and even experienced medical professionals and surgeons. Suitable and accessible training tools are of significant importance for simulating a particular surgery in order to provide practice opportunities for a specific surgical procedure...
April 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32191551/wireless-body-area-networks-a-comprehensive-survey
#29
Bahae Abidi, Abdelillah Jilbab, El Haziti Mohamed
Current progress in technology, especially wireless body area network (WBAN) became one of the enabling technologies that provide many successful applications in non-medical or medical field. WBAN is a communication standard optimised for low power devices and operation on, in or around the human body, to monitor the human health issues and route the physical or vital data from biosensors nodes to the server for further analysis. The challenge of WBAN is that the energy of the biosensors is limited by the battery life and many routing protocols have been designed specifically for relaying collected data to a base station for additional processing, it might differ depending on the network architecture...
March 19, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32090661/soft-robotic-in-the-construction-of-prosthetic-heart-valve-a-novel-approach
#30
Luke Ohlmann, Hadi Mohammadi
In this study, we describe the design, fabrication and computational testing of a new prosthetic device for aortic valve replacement. The device is an active stent composed of a silicone rubber during initial prototyping, with adaptation towards a hydrogel, poly-vinyl alcohol reinforced with bacterial cellulose nanofibres underway. The nature of the stent is soft robotic (SR), where an increase in internal pressure of the pneumatic network causes an increase in the internal diameter of the device. When working in tandem with the SR heart valve, described briefly, pulsations of the blood and the energy gained from ventricular pressure actuates the valve-and-stent combination...
February 24, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32083499/efficient-high-capacity-technique-to-embed-epr-information-and-to-detect-tampering-in-medical-images
#31
R Geetha, S Geetha
Reversible data hiding (RDH) is one of the well-known and highly recommended method to enhance medical data security or electronic patient record (EPR), privacy and truthfulness. In clinical images, while hiding the data, care must be taken to maintain the confidentiality of the information that is to be hidden within the clinical images because the hidden information should not bring down the original quality of the image. Mostly, the investigations carried out for medical diagnosis are usually constructed on the basis of investigation systems used for diagnosis and are grounded on the images usually used for medical study...
February 21, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32077775/the-modified-allen-test-and-a-novel-objective-screening-algorithm-for-hand-collateral-circulation-using-differential-photoplethysmography-for-preoperative-assessment-a-pilot-study
#32
Ahmed Elwali, Zahra Moussavi
Hand-ischemia and artery-thrombosis are serious complications of hand artery cannulation/grafting. Screening the patency of hand arteries reduces the complications. Modified Allen Test (MAT), Barbeau's test, and Doppler/Duplex-ultrasonic test screen hand arterial patency. Each of them, however, either lacks objectivity, requires subject cooperation, or is not readily available in operating rooms. In this pilot study, we aim to provide a novel, objective, reliable, and inexpensive alternative using differential photo-plethysmography (PPG) measurement, and an artery selection algorithm...
February 20, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/32077351/improvements-to-a-method-for-determining-leg-length-following-total-hip-arthroplasty
#33
Toni Wendler, Martin Heilemann, Ronny Grunert, Robert Möbius, Michael Schmidt, Stefan Schleifenbaum, Torsten Prietzel
Discrepancy in leg length does frequently occur as a side effect of total hip arthroplasty and may lead to reduced patient satisfaction as well as injury in the sequalae. It is consequently important to reduce leg length discrepancy where-ever technically possible. This may be achieved by recording precise intraoperative measurements and using different sized implanted components. The aim of the given study was to improve the accuracy of a previously validated optic measurement system (OMS) to reduce leg length discrepancy...
February 20, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/31997679/accuracy-of-an-electrogoniometer-relative-to-optical-motion-tracking-for-quantifying-wrist-range-of-motion
#34
Brian P McHugh, Amy M Morton, Bardiya Akhbari, Janine Molino, Joseph J Crisco
Methods for capturing wrist range of motion (RoM) vary in complexity, cost, and sensitivity. Measures by manual goniometer, though an inexpensive modality, provide neither dynamic nor objective motion data. Conversely, optical motion capture systems are widely used in three-dimensional scientific motion capture studies but are complex and expensive. The electrogoniometer bridges the gap between portability and objective measurement. Our study aims to evaluate the accuracy of a 2 degree of freedom electrogoniometer using optical motion capture as the reference for in vivo wrist motion...
January 30, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/31971037/in-ear-eeg-a-portable-platform-for-home-monitoring
#35
G Sintotskiy, H Hinrichs
There are many useful medical treatment devices today, which are indispensable in health care. However, in some emergency situations and in prehospital care mobile, easy-to-use devices could further improve the patient-centred care. For example, a mobile, easy-to-use home-monitoring EEG-system would be useful for monitoring diseases like epilepsy and for treating diseases like attention deficit disorder (ADHD) using biofeedback. Such a device should be equipped with the ability to start self-performed by user recordings and provide high signal quality, while having an affordable price...
January 23, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/31939692/development-of-a-miniature-and-asic-based-impedance-cardiograph
#36
Jyoti V Jethe, T S Ananthakrishnan, G D Jindal
In view of cardiac output monitoring application of impedance cardiography a miniature impedance cardiograph has been developed, which is based on an application specific integrated circuit (analog front end chip AFE4300). Carrier current capability of this chip has been enhanced four times (up to 3.2 milliamperes) for cardiology applications with the help of an external resistance, not provisioned in the original design. Also the sensed signal is externally amplified before feeding to AFE chip to increase resolution in the impedance range of 10-50 Ohms...
January 15, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/31939691/evaluating-patient-turn-effectiveness-using-turn-assist-technologies
#37
Aleksandra R Budarick, Christopher Moore, Steven L Fischer
Pressure ulcers are commonly developed in bedridden patients due to prolonged pressure on bony prominences. Turn-assist support surfaces have been developed to help reposition patients to redistribute interface pressure. The aim of this study was to determine if turn-assist technologies confer benefits to patients relative to manual turning, and to determine if different turn-assist functionalities influence patient outcomes differently. Interface pressure (contact area, average and peak pressure) and patient turn quality metrics (turn angle and repeatability) were recorded during manual and facilitated turns on two different turn-assist hospital beds at initial patient position, turn-assist (maximal mattress inflation) and final patient position...
January 15, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/31939688/certificateless-pairing-free-authentication-scheme-for-wireless-body-area-network-in-healthcare-management-system
#38
Philemon Kasyoka, Michael Kimwele, Shem Mbandu Angolo
With the current advancement in technology, the use of Wireless Body Area Networks (WBANs) has become popular in the healthcare management. They provide a mechanism to collect and transmit physiological data to healthcare providers in remote locations. With the need to secure healthcare data becoming a global concern, mechanisms must be put in place to ensure secure communication of physiological data collected in WBANs. This paper, presents a new authentication scheme for WBANs based on Elliptic Curve Cryptography...
January 15, 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/31997672/tetragrip-a-four-channel-upper-limb-fes-device-for-people-with-c5-c6-tetraplegia-device-design-and-clinical-outcome
#39
L Venugopalan, P N Taylor, J E Cobb, I D Swain
The TetraGrip is an inertial measurement unit-controlled surface upper limb FES device developed for improving hand functions of people with tetraplegia. The reliability of the control system and the repeatability and reproducibility of the device were assessed by analysing the results obtained when 14 able-bodied volunteers used the device. These volunteers were able to generate the control signals effectively once they had sufficient training. The two tetraplegic volunteers participated in a 12-week long clinical study (exercise, 4 weeks; functional tasks, 8 weeks), where they used the device to perform functional tasks...
January 2020: Journal of Medical Engineering & Technology
https://read.qxmd.com/read/31855109/conceptual-design-considerations-for-a-wireless-intraocular-pressure-sensor-system-for-effective-glaucoma-management
#40
Wolfgang Fink, Shaun Brown, Andres Nuncio Zuniga, Eui-Hyeok Yang, Thomas George
As a leading form of preventable visual impairment, it is imperative to assess glaucoma treatment as a function of intraocular pressure (IOP). IOP can spike throughout the day. This necessitates a device that can (1) monitor IOP outside of clinical visits by providing a memory when IOP exceeds a set threshold indicating the possibility for glaucomatous damage to occur; and (2) accurately assess IOP. Both requirements point ultimately towards the development of an implantable device. The Wireless Intraocular Pressure Sensor System (WIPSS) devised by our team uses optical technologies and may assist an overseeing clinician with assessing glaucoma treatment efficacy and avoiding irreversible glaucomatous visual field loss downstream...
December 19, 2019: Journal of Medical Engineering & Technology
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