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Journal of Medical Engineering & Technology

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https://www.readbyqxmd.com/read/28849957/a-novel-obstetric-medical-device-designed-for-autotransfusion-of-blood-in-life-threatening-postpartum-haemorrhage
#1
Gardner Yost, Brandon Collofello, Gelila Goba, Abigail Koch, Amanda Harrington, Hananeh Esmailbeigi, Nuriya Robinson, Pamela Kutz-McClain, Stacie Geller, Valerie Dobiesz
Postpartum haemorrhage (PPH) is an obstetric emergency caused by excessive blood loss after delivery, which is the leading cause of maternal mortality worldwide. PPH can lead to volume depletion, hypovolemic shock, anaemia and ultimately death. The prevalence of PPH is disproportionately higher in low resource settings where there is limited access to skilled medical care and safe blood supplies. Current management strategies target both prevention and treatment of PPH however no alternatives currently exist to address the lack of safe blood supplies which are considered essential in emergency obstetrical care...
August 29, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28849956/cleansing-technique-using-high-velocity-steam-air-micromist-jet-spray
#2
Koichi Fukuda, Masayuki Ishihara, Kaoru Murakami, Shingo Nakamura, Yoko Sato, Masahiro Kuwabara, Masanori Fujita, Tomoharu Kiyosawa, Hidetaka Yokoe
Application of a high-velocity steam-air micromist jet spray (HVS-AMJS; micromist average diameter: 2.4 μm) for cleansing the skin is proposed. Low-pressure steam is mixed with compressed air (pH 6.5) in a nozzle, and then sprayed at a pressure of ≦0.25 MPa and a velocity of ≧0.34 m/s on the skin or surface of material located approximately 5-10 cm from the nozzle. The temperature on the sprayed surface and water flow rate could be controlled between 42 °C and 46 °C and at approximately 50 mL/min, respectively...
August 29, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28849955/a-simple-method-for-quantitative-assessment-of-elbow-flexion-strength
#3
Syrpailyne Wankhar, George M Srampickal, Anil Mathew, Binu P Thomas
Assessment of elbow flexion strength is an important component of upper limb neurological examination and is necessary for patient screening, planning of surgical interventions and rehabilitation. Medical Research Council (MRC) Scale is the most widely used method for grading muscle strength. The major drawback of MRC grading is that it is observer dependent and imprecise. A quantitative measure of elbow flexion strength is an objective measure that eliminates such bias. Several instruments have been developed for quantifying the elbow flexion power...
August 29, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28849953/measurement-of-the-mechanical-properties-of-the-human-gallbladder
#4
Alireza Karimi, Ahmad Shojaei, Pedram Tehrani
Gallbladder is a small organ of the body which is located in the right side of the liver. It is responsible of storing the bile and releasing it to the intestine. The gallbladder can subject to the mechanical deformation/loading as a result of the cholecystitis, cholesterolosis of the gallbladder, etc. However, so far the mechanical properties of the human gallbladder have not been measured. This study was aimed at conducting an experimental study to measure the mechanical properties of the human gallbladder under the axial and transversal tensile loadings...
August 29, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28786703/non-proliferative-diabetic-retinopathy-symptoms-detection-and-classification-using-neural-network
#5
Mohammad A Al-Jarrah, Hadeel Shatnawi
Diabetic retinopathy (DR) causes blindness in the working age for people with diabetes in most countries. The increasing number of people with diabetes worldwide suggests that DR will continue to be major contributors to vision loss. Early detection of retinopathy progress in individuals with diabetes is critical for preventing visual loss. Non-proliferative DR (NPDR) is an early stage of DR. Moreover, NPDR can be classified into mild, moderate and severe. This paper proposes a novel morphology-based algorithm for detecting retinal lesions and classifying each case...
August 8, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28730864/automatic-rbg-depth-pressure-anthropometric-analysis-and-individualised-sleep-solution-prescription
#6
Jordi Esquirol Caussa, Cristina Palmero Cantariño, Vanessa Bayo Tallón, Miquel Àngel Cos Morera, Sergio Escalera, David Sánchez, Maider Sánchez Padilla, Noelia Serrano Domínguez, Mireia Relats Vilageliu
INTRODUCTION: Sleep surfaces must adapt to individual somatotypic features to maintain a comfortable, convenient and healthy sleep, preventing diseases and injuries. Individually determining the most adequate rest surface can often be a complex and subjective question. OBJECTIVES: To design and validate an automatic multimodal somatotype determination model to automatically recommend an individually designed mattress-topper-pillow combination. METHODS: Design and validation of an automated prescription model for an individualised sleep system is performed through a single-image 2 D-3 D analysis and body pressure distribution, to objectively determine optimal individual sleep surfaces combining five different mattress densities, three different toppers and three cervical pillows...
July 21, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28675070/validity-of-heart-rate-measurements-by-the-garmin-forerunner-225-at-different-walking-intensities
#7
Jomme Claes, Roselien Buys, Andrea Avila, Dewar Finlay, Alan Kennedy, Daniel Guldenring, Werner Budts, Véronique Cornelissen
The accuracy of wrist worn heart rate monitors based on photoplethysmography (PPG) is not fully clinically accepted. Therefore, we aimed to validate heart rate measurements of a commercially available PPG heart rate monitor, i.e. the Garmin Forerunner(®) 225. Twelve healthy volunteers (six women; mean age: 28 years) performed a treadmill protocol consisting of: five minutes sitting, five minutes standing, 10 minutes walking at 4 km/h, 10 minutes walking at a gradient of 5% and intensity of 4-6 metabolic equivalents (METs), 10 minutes walking at a gradient of 8% and intensity of seven METs or more...
July 4, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28795647/news-and-product-update
#8
(no author information available yet)
No abstract text is available yet for this article.
August 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28795646/publications-update
#9
(no author information available yet)
No abstract text is available yet for this article.
August 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28617185/correction-to-syrpailyne-wankhar-et-al-a-versatile-stretch-sensor-for-measuring-physiological-movement-using-a-centre-loaded-end-supported-load-cell
#10
(no author information available yet)
No abstract text is available yet for this article.
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28573938/long-term-gait-pattern-assessment-using-a-tri-axial-accelerometer
#11
Francesca De Cillis, Francesca De Simio, Roberto Setola
In this article, we present a pervasive solution for gait pattern classification that uses accelerometer data retrieved from a waist-mounted inertial sensor. The proposed algorithm has been conceived to operate continuously for long-term applications. With respect to traditional approaches that use a large number of features and sophisticated classifiers, our solution is able to assess four different gait patterns (standing, level walking, stair ascending and descending) by using three features and a decision tree...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28573909/mobile-gait-analysis-via-eshoes-instrumented-shoe-insoles-a-pilot-study-for-validation-against-the-gold-standard-gaitrite-%C3%A2
#12
Harald Jagos, Katharina Pils, Michael Haller, Claudia Wassermann, Christa Chhatwal, Dietmar Rafolt, Frank Rattay
Clinical gait analysis contributes massively to rehabilitation support and improvement of in-patient care. The research project eSHOE aspires to be a useful addition to the rich variety of gait analysis systems. It was designed to fill the gap of affordable, reasonably accurate and highly mobile measurement devices. With the overall goal of enabling individual home-based monitoring and training for people suffering from chronic diseases, affecting the locomotor system. Motion and pressure sensors gather movement data directly on the (users) feet, store them locally and/or transmit them wirelessly to a PC...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28447865/a-versatile-stretch-sensor-for-measuring-physiological-movement-using-a-centre-loaded-end-supported-load-cell
#13
Syrpailyne Wankhar, Albert A Kota, Dheepak Selvaraj
Acquisition of movement of some body parts can provide important physiological information. In clinical practice as well as for research purposes different types of sensors such as piezoelectric crystals, conductive rubber and optical displacement sensors are used for such measurements. Each of these sensors is associated with its problems. This paper discusses the use of a stretch sensor constructed using a small metal bar, approximately the size of a zipper slider that can be sewn into a fabric in the form of a belt...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28447862/high-reliability-microcontroller-nerve-stimulator-for-assistance-in-regional-anaesthesia-procedures
#14
Carlos A Ferri, Antonio A F Quevedo
In the last decades, the use of nerve stimulators to aid in regional anaesthesia has been shown to benefit the patient since it allows a better location of the nerve plexus, leading to correct positioning of the needle through which the anaesthetic is applied. However, most of the nerve stimulators available in the market for this purpose do not have the minimum recommended features for a good stimulator, and this can lead to risks to the patient. Thus, this study aims to develop an equipment, using embedded electronics, which meets all the characteristics, for a successful blockade...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28447860/remote-sensing-of-physiological-signs-using-a-machine-vision-system
#15
Ali Al-Naji, Kim Gibson, Javaan Chahl
The aim of this work is to remotely measure heart rate (HR) and respiratory rate (RR) using a video camera from long range (> 50 m). The proposed system is based on imperceptible signals produced from blood circulation, including skin colour variations and head motion. As these signals are not visible to the naked eye and to preserve the signal strength in the video, we used an improved video magnification technique to enhance these invisible signals and detect the physiological activity within the subject...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28406346/a-novel-laparoscopic-grasper-with-two-parallel-jaws-capable-of-extracting-the-mechanical-behaviour-of-soft-tissues
#16
Dariush Nazarynasab, Farzam Farahmand, Alireza Mirbagheri, Elnaz Afshari
Data related to force-deformation behaviour of soft tissue plays an important role in medical/surgical applications such as realistically modelling mechanical behaviour of soft tissue as well as minimally invasive surgery (MIS) and medical diagnosis. While the mechanical behaviour of soft tissue is very complex due to its different constitutive components, some issues increase its complexity like behavioural changes between the live and dead tissues. Indeed, an adequate quantitative description of mechanical behaviour of soft tissues requires high quality in vivo experimental data to be obtained and analysed...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28394662/validation-of-an-ambient-measurement-system-ams-for-walking-speed
#17
Jonathan S Varsanik, Zebadiah M Kimmel, Carl de Moor, Wendy Gabel, Glenn A Phillips
Walking speed is an important indicator of worsening in a variety of neurological and neuromuscular diseases, yet typically is measured only infrequently and in a clinical setting. Passive measurement of walking speed at home could provide valuable information to track the progression of many neuromuscular conditions. The purpose of this study was to validate the measurement of walking speed by a shelf-top ambient measurement system (AMS) that can be placed in a patient's home. Twenty-eight healthy adults (16 male, 12 female) were asked to walk three pre-defined routes two times each (total of 168 traversals)...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28300460/smartphone-based-photoplethysmographic-imaging-for-heart-rate-monitoring
#18
Maha Alafeef
The purpose of this study is to make use of visible light reflected mode photoplethysmographic (PPG) imaging for heart rate (HR) monitoring via smartphones. The system uses the built-in camera feature in mobile phones to capture video from the subject's index fingertip. The video is processed, and then the PPG signal resulting from the video stream processing is used to calculate the subject's heart rate. Records from 19 subjects were used to evaluate the system's performance. The HR values obtained by the proposed method were compared with the actual HR...
July 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28585476/harmonic-analysis-of-peripheral-pulse-for-screening-subjects-at-high-risk-of-diabetes
#19
G D Jindal, Rajesh Kumar Jain, Sushma N Bhat, Jyoti A Pande, Manasi S Sawant, Sameer K Jindal, Alaka K Deshpande
Power spectral density (PSD) of peripheral pulses in human has been investigated in the past for its clinical applications. Continuing the efforts, data acquired using Peripheral Pulse Analyser in research projects sponsored by Board of Research in Nuclear Sciences in 207 control subjects, 18 descendants of diabetic patients and 22 patients with systemic hypertension have been subjected to PSD analysis for its study of harmonics. Application software, named Pulse Harmonic Analyser specifically developed for this work, selected 131,072 samples from each data file, obtained PSD, derived 52 PHA parameters and saved them in an Excel sheet...
June 6, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28585460/assessment-of-knee-alignment-with-varus-and-valgus-force-through-the-range-of-flexion-with-non-invasive-navigation
#20
F Henderson, R Alho, P Riches, F Picard
In image-free total knee arthroplasty (TKA) navigation, infra-red markers are attached to bony landmarks to provide kinematic data intra-operatively, with the aim of improving the precision of implant placement. In non-invasive navigation, infra-red markers are attached to the skin surface, with recent evidence suggesting that this can give repeatable measurements of lower limb mechanical alignment. The aim of our study was to evaluate the use of a non-invasive navigation system in the assessment of mechanical alignment with applied coronal force through the range of flexion...
June 6, 2017: Journal of Medical Engineering & Technology
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