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https://www.readbyqxmd.com/read/28227506/a-pdms-based-optical-waveguide-for-transcutaneous-powering-of-microelectrode-arrays
#1
Ali Ersen, Mesut Sahin, Ali Ersen, Mesut Sahin, Ali Ersen, Mesut Sahin
Implantable microelectrode arrays (MEAs) usually have on-site electronics that need to be powered, both in neural recording and stimulation applications. Interconnecting wires between implanted electrodes and the outside world constitute a major source of complications. Our solution to this tethering problem is to design a light waveguide that can collect the optical power transcutaneously and transmit it to the microelectrode array where it is to be converted to an electric current. A polydimethylsiloxane (PDMS)-based waveguide was fabricated and its attenuation was measured in vitro and found to be 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226935/the-hybrid-bio-inspired-aerial-vehicle-concept-and-simscape-flight-simulation
#2
Tao Zhang, Steven Su, Hung T Nguyen, Tao Zhang, Steven Su, Hung T Nguyen, Steven Su, Tao Zhang, Hung T Nguyen
This paper introduces a Silver Gull-inspired hybrid aerial vehicle, the Super Sydney Silver Gull (SSSG), which is able to vary its structure, under different manoeuvre requirements, to implement three flight modes: the flapping wing flight, the fixed wing flight, and the quadcopter flight (the rotary wing flight of Unmanned Air Vehicle). Specifically, through proper mechanism design and flight mode transition, the SSSG can imitate the Silver Gull's flight gesture during flapping flight, save power consuming by switching to the fixed wing flight mode during long-range cruising, and hover at targeted area when transferring to quadcopter flight mode...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226386/propeller-perforator-flaps-of-extremities-seem-less-reliable
#3
B Chaput, N Bertheuil, R Carloni, F Bekara, J Laloze, C Herlin
No abstract text is available yet for this article.
February 22, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28226380/titanium-mesh-nasal-repair-without-nasal-lining
#4
Joseph Zenga, Katherine Kao, Collin Chen, Jennifer Gross, Samuel Hahn, John J Chi, Gregory H Branham
The objective of this study was to describe outcomes for patients who underwent titanium mesh reconstruction of full-thickness nasal defects without internal lining repair. This is a retrospective cohort study. Patients with through-and-through nasal defects were identified at a single academic institution between 2008 and 2016. Nasal reconstruction was performed with either titanium mesh and external skin reconstruction without repair of the intranasal lining or traditional three-layer closure. Five patients underwent titanium mesh reconstruction and 11 underwent traditional three-layer repair...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226373/microvascular-flaps-in-nasal-reconstruction
#5
Irene A Kim, Kofi D O Boahene, Patrick J Byrne, Shaun C Desai
Nasal reconstruction for subtotal and total rhinectomy defects is a challenging endeavor, which requires technical finesse, a keen artistic eye, and the ability to anticipate long-term changes that accompany postoperative healing. While local and regional flaps have traditionally been utilized to reconstitute missing nasal elements, certain situations may not provide sufficient or acceptable tissue for optimal reconstruction. In these situations, the three major components of the nose-lining, structural support, and external skin-may require reconstruction with tissues harvested from distant sites through microvascular free tissue transfer...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226371/nasal-reconstruction-involving-multiple-subunit-defects
#6
Artemus Cox, Matthew Fort
The challenges of nasal reconstruction are readily apparent to any surgeon who has undertaken this task. Defects involving multiple subunits of the nose usually require adjacent tissue transferred to the wound typically in the form of a forehead flap or other local flaps. Herein, we describe current thought on the subunit principle and the application of local flaps and grafts in reconstructing larger superficial defects of the nose. Primary attention is paid to analysis and patient counseling.
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226369/interpolated-flaps
#7
Samkon Kaltho Gado, Kaveh Karimnejad, Ian A Maher, Paul J Gruber, Scott Walen
Nasal reconstruction has been articulated in the literature since 700 B.C. when the earliest iteration of the forehead flap was described in the Indian medical treatise, the Sushruta Samhita. Since then it has evolved into the interpolated flap which has served as a powerful tool for facial reconstruction. The interpolated flap is constructed from nonadjacent donor tissue that has an inherent blood supply. It requires a multistaged approach and is best suited for reconstruction of large or deep defects of the nose...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226368/local-cutaneous-flaps-in-nasal-reconstruction
#8
Guanning Nina Lu, J David Kriet, Clinton D Humphrey
Facial plastic surgeons use a variety of reconstruction techniques to overcome challenges in restoring the function, structural integrity, and intricate nasal contour in nasal reconstruction. Local cutaneous flaps provide excellent skin texture, thickness, and color match in nasal reconstruction. They offer an excellent cosmetic appearance for small- to medium-sized defects and are preferentially utilized when feasible. This article aims to provide an updated review of local cutaneous flaps for nasal defect repair and describe the major principles related to flap selection...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226367/using-grafts-and-granulation-to-improve-nasal-repair
#9
Paul J Gruber, Scott Walen, Sean T Massa, Ian A Maher
Skin grafts offer a dynamic repair option for nasal defects of appropriate size, depth, and location. Granulation and grafting can successfully be used as stand-alone reconstructive options or in conjunction with flap repair. This article reviews suitable indications for graft and granulation use in nasal repair to achieve optimum functional and esthetic outcomes.
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226366/principles-of-nasal-reconstruction
#10
Emily Spataro, Gregory H Branham
The rise in cutaneous malignancies over the past 20 years has led to significant advances in reconstructing the nose from an aesthetic and functional standpoint. The principles of nasal reconstruction center on application of the nasal subunit principle, three-layered reconstruction, nasal skin characteristics, and patient factors. Reconstructive planning starts with proper defect analysis, followed by application of the reconstructive ladder for soft-tissue repair, adequate structural support, and repair of nasal lining deficits...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28225722/efficacy-of-the-inverted-internal-limiting-membrane-flap-technique-with-vitrectomy-for-retinal-detachment-associated-with-myopic-macular-holes
#11
Ryo Baba, Yoshihiro Wakabayashi, Kazuhiko Umazume, Tomoaki Ishikawa, Hiromichi Yagi, Daisuke Muramatsu, Hiroshi Goto
PURPOSE: To evaluate the anatomical and functional outcome of the inverted internal limiting membrane (ILM) flap technique with vitrectomy for retinal detachment associated with macular hole (MHRD) in highly myopic eyes. METHODS: In this retrospective observational study, 21 eyes with MHRD that underwent vitrectomy with conventional ILM peeling (ILM-peeling group, n = 11) or the inverted ILM flap technique (ILM flap group, n = 10) combined with C3F8 tamponade were enrolled in this study...
March 2017: Retina
https://www.readbyqxmd.com/read/28224620/customized-software-to-optimize-circumferential-pharyngoesophageal-free-flap-reconstruction
#12
Oleksandr Butskiy, Vladimir G Kim, Brent A Chang, Donald W Anderson, Eitan Prisman
No abstract text is available yet for this article.
February 22, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28224430/edaravone-enhances-the-viability-of-ischemia-reperfusion-flaps
#13
Dong-Yi Zhang, Shen-Song Kang, Zheng-Wen Zhang, Rui Wu
The purpose of the experiment was to study the efficacy of edaravone in enhancing flap viability after ischemia/reperfusion (IR) and its mechanism. Forty-eight adult male SD rats were randomly divided into 3 groups: control group (n=16), IR group (n=16), and edaravone-treated IR group (n=16). An island flap at left lower abdomen (6.0 cm×3.0 cm in size), fed by the superficial epigastric artery and vein, was created in each rat of all the three groups. The arterial blood flow of flaps in IR group and edaravone-treated IR group was blocked for 10 h, and then the blood perfusion was restored...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28223854/mohs-surgical-reconstruction-educational-activity-a-resident-education-tool
#14
Julie A Croley, C Helen Malone, Brandon P Goodwin, Linda G Phillips, Eric L Cole, Richard F Wagner
BACKGROUND: Surgical reconstructive planning following Mohs surgery can be a difficult subject for dermatology residents to master. Prior research demonstrates that active learning is preferred and more effective compared to passive learning models and that dermatology residents desire greater complexity and volume in surgical training. We present a novel, active, problem-based learning tool for the education of Mohs reconstruction with the goal of improving residents' ability to plan surgical reconstructions...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28223015/surgical-management-of-ankyloses-of-the-temporomandibular-joint-by-a-piezoelectric-device
#15
Giuseppe Spinelli, Domenico Valente, Giuditta Mannelli, Mirco Raffaini, Francesco Arcuri
INTRODUCTION: Piezosurgery is commonly used in different field of craniomaxillofacial surgery; since its introduction it has become one of the widely adopted technique for performing osteotomies in orthognathic surgery, distraction osteogenesis and dentoalveolar surgery. Little has been written regarding ultrasonic system for temporomandibular joint surgery (TMJ). In this prospective study we describe the use of piezoelectric device for ankylosis of the TMJ. MATERIALS AND METHODS: We enrolled in this study 19 patients, 10 males and 9 females, mean (SD) age 24...
December 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28222969/patient-tumour-and-treatment-factors-affect-complication-rates-in-soft-tissue-sarcoma-flap-reconstruction-in-a-synergistic-manner
#16
J Slump, P C Ferguson, J S Wunder, A M Griffin, H J Hoekstra, X Liu, S O P Hofer, A C O'Neill
INTRODUCTION: Flap reconstruction plays an essential role in the management of soft tissue sarcoma, facilitating wide resection while maximizing preservation of function. The addition of reconstruction increases the complexity of the surgery and identification of patients who are at high risk for post-operative complications is an important part of the preoperative assessment. This study examines predictors of complications in these patients. METHODS: 294 patients undergoing flap reconstruction following sarcoma resection were evaluated...
February 8, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28222701/the-effect-of-deep-muscle-relaxation-on-the-force-required-during-latissimus-dorsi-dissection-for-breast-reconstructive-surgery-results-of-a-prospective-double-blinded-observational-pilot-study
#17
T Ledowski, A Goodwin-Walters, P Quinn, M Calvert
BACKGROUND: The use of neuromuscular blocking agents has previously been suggested to facilitate the dissection of the latissimus dorsi muscle during breast reconstructive surgery. The aim of this study was to quantify the influence of deep muscle relaxation on the force required to lift the latissimus dorsi muscle during flap preparation. METHODS: After ethics approval and written informed consent 15 patients scheduled for elective breast reconstruction with a latissimus dorsi pedicled flap (muscle flap, not myocutaneous flap) under general anaesthesia were prospectively included...
February 21, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28221297/optimal-epinephrine-concentration-and-time-delay-to-minimize-perfusion-in-eyelid-surgery-measured-by-laser-based-methods-and-a-novel-form-of-extended-wavelength-diffuse-reflectance-spectroscopy
#18
Rafi Sheikh, Ulf Dahlstrand, Khashayar Memarzadeh, Jonas Blohmé, Nina Reistad, Malin Malmsjö
OBJECTIVE: This study investigates the hypoperfusion effects of epinephrine in local anesthesia in eyelid surgery. A novel form of extended-wavelength diffuse reflectance spectroscopy was evaluated. METHODS: Blood perfusion in porcine eyelid flaps was measured using laser Doppler velocimetry and laser speckle contrast imaging, whereas the tissue response was measured using diffuse reflectance spectroscopy with a broad spectrum (450-1550 nm). Epinephrine was either injected cumulatively, 0...
February 17, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28220584/forehead-flaps-for-nasal-reconstruction-a-single-center-experience
#19
Roberto Cecchi, Giovanni Troiano
No abstract text is available yet for this article.
February 20, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28220252/long-term-surgical-outcomes-of-the-inverted-internal-limiting-membrane-flap-technique-in-highly-myopic-macular-hole-retinal-detachment
#20
Taiga Kinoshita, Yasutaka Onoda, Takatoshi Maeno
BACKGROUND: Pars plana vitrectomy (PPV) procedures are used for the surgical treatment of macular hole retinal detachment (MHRD) associated with high myopia. Re-detachment of the retina has been reported in MHRD associated with high myopia. Our aim was to evaluate the 1-year outcomes of vitrectomy, performed using an inverted internal limiting membrane (ILM) flap technique with gas tamponade, in five cases of MHRD associated with high myopia. METHODS: We performed a retrospective review of medical records of five consecutive cases of highly myopic MHRD...
February 20, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
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