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Surgical technology

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https://www.readbyqxmd.com/read/28538573/pursuing-mirror-image-reconstruction-in-unilateral-microtia-customizing-auricular-framework-by-application-of-three-dimensional-imaging-and-three-dimensional-printing
#1
Hsin-Yu Chen, Li-Shia Ng, Chun-Shin Chang, Ting-Chen Lu, Ning-Hung Chen, Zung-Chung Chen
BACKGROUND: Advances in three-dimensional imaging and three-dimensional printing technology have expanded the frontier of presurgical design for microtia reconstruction from two-dimensional curved lines to three-dimensional perspectives. This study presents an algorithm for combining three-dimensional surface imaging, computer-assisted design, and three-dimensional printing to create patient-specific auricular frameworks in unilateral microtia reconstruction. METHODS: Between January of 2015 and January of 2016, six patients with unilateral microtia were enrolled...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538566/predicting-thrombosis-formation-in-1-mm-diameter-arterial-anastomoses-with-transit-time-ultrasound-technology
#2
Gabrielle Shaughness, Collin Blackburn, Alberto Ballestín, Yelena Akelina, Jeffrey A Ascherman
BACKGROUND: Thrombosis is a common source of failure in anastomoses, flaps, and vascular grafts. Ensuring vessel patency is critical to the success of microvascular procedures. Any tool that can accurately predict the patency of an anastomosis intraoperatively would enable the surgeon to detect and correct flow restrictions while the patient is still in the operating room. METHODS: The authors used transit-time ultrasound technology in this pilot study to investigate whether a minimal cutoff value for quantitative postoperative blood flow (in milliliters per minute) could be established that would reliably predict sustained vessel patency at 24 hours postoperatively...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538495/committee-opinion-no-701-choosing-the-route-of-hysterectomy-for-benign-disease
#3
(no author information available yet)
Hysterectomy is one of the most frequently performed surgical procedures in the United States. Selection of the route of hysterectomy for benign causes can be influenced by the size and shape of the vagina and uterus; accessibility to the uterus; extent of extrauterine disease; the need for concurrent procedures; surgeon training and experience; average case volume; available hospital technology, devices, and support; whether the case is emergent or scheduled; and preference of the informed patient. Vaginal and laparoscopic procedures are considered "minimally invasive" surgical approaches because they do not require a large abdominal incision and, thus, typically are associated with shortened hospitalization and postoperative recovery times compared with open abdominal hysterectomy...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28538491/committee-opinion-no-701-summary-choosing-the-route-of-hysterectomy-for-benign-disease
#4
(no author information available yet)
Hysterectomy is one of the most frequently performed surgical procedures in the United States. Selection of the route of hysterectomy for benign causes can be influenced by the size and shape of the vagina and uterus; accessibility to the uterus; extent of extrauterine disease; the need for concurrent procedures; surgeon training and experience; average case volume; available hospital technology, devices, and support; whether the case is emergent or scheduled; and preference of the informed patient. Vaginal and laparoscopic procedures are considered "minimally invasive" surgical approaches because they do not require a large abdominal incision and, thus, typically are associated with shortened hospitalization and postoperative recovery times compared with open abdominal hysterectomy...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28538021/global-surgery-current-evidence-for-improving-surgical-care
#5
Jennifer C Fuller, David A Shaye
PURPOSE OF REVIEW: The field of global surgery is undergoing rapid transformation, owing to several recent prominent reports positioning it as a cost-effective means of relieving global disease burden. The purpose of this article is to review the recent advances in the field of global surgery. RECENT FINDINGS: Efforts to grow the global surgical workforce and procedural capacity have focused on innovative methods to increase surgeon training, enhance international collaboration, leverage technology, optimize existing health systems, and safely implement task-sharing...
May 19, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/28534326/-comparative-study-of-3d-and-2d-laparoscopic-surgery-for-gastrointestinal-tumors
#6
Fujian Ji, Xuedong Fang, Bingyuan Fei
OBJECTIVE: To evaluate the technical advantages of 3D laparoscopic and 2D laparoscopic surgery for gastrointestinal tumors. METHODS: Clinical data of gastrointestinal cancer patients undergoing 3D laparoscopic or 2D laparoscopic surgery from January 2015 to January 2017 in our department were retrospectively analyzed These patients included 93 gastric cancer cases undergoing laparoscopic radical resection (total gastrectomy, 48 cases in 3D group, 45 cases in 2D group), 45 rectal cancer cases undergoing radical resection combined with lateral lymph node dissection (27 cases in 3D group, 18 cases in 2D group) and 76 right colon cancer cases undergoing radical resection (37 cases in 3D group, 39 cases in 2D group)...
May 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28533140/3d-interactive-surgical-visualization-system-using-mobile-spatial-information-acquisition-and-autostereoscopic-display
#7
Zhencheng Fan, Yitong Weng, Guowen Chen, Hongen Liao
Three-dimensional (3D) visualization of preoperative and intraoperative medical information becomes more and more important in minimally invasive surgery. We develop a 3D interactive surgical visualization system using mobile spatial information acquisition and autostereoscopic display for surgeons to observe surgical target intuitively. The spatial information of regions of interest (ROIs) is captured by the mobile device and transferred to a server for further image processing. Triangular patches of intraoperative data with texture are calculated with a dimension-reduced triangulation algorithm and a projection-weighted mapping algorithm...
May 19, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28533004/validation-of-navigation-ultrasound-for-clavicular-length-measurement
#8
Anders Thorsmark Høj, Chiara Villa, Ole M Christensen, Søren Torp-Pedersen, Søren Overgaard, Lars H Frich
Accurate clavicular length measurement is considered important for the selection of patients requiring surgical treatment after a midclavicular fracture. As radiographic length measurements can be inaccurate to varying degrees, new measurement methods are needed. Use of novel technology, navigation ultrasound, to deliver accurate measurements seems promising. To examine the reliability and validity of navigation ultrasound for length measurements of the clavicle, a study was performed using length measurements performed before forensic autopsies from 2012 to 2013...
May 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28532364/evolution-of-concepts-and-technologies-in-ophthalmic-laser-therapy
#9
Daniel Palanker
Ophthalmology was the first medical specialty to adopt lasers right after their invention more than 50 years ago, and they gradually revolutionized ocular imaging, diagnostics, therapy, and surgery. Challenging precision, safety, and selectivity requirements for ocular therapeutic and surgical procedures keep advancing the laser technologies, which in turn continue enabling novel applications for the preservation and restoration of sight. Modern lasers can provide single-cell-layer selectivity in therapy, submicrometer precision in three-dimensional image-guided surgery, and nondamaging retinal therapy under optoacoustic temperature control...
October 14, 2016: Annual Review of Vision Science
https://www.readbyqxmd.com/read/28530626/-robotic-kidney-transplantation
#10
Lluis Peri, Mireia Musquera, Laura Izquierdo, Caterina Fernández-Ramón, Anat Melnick, Antonio Alcaraz
OBJECTIVE: Renal transplant surgery has not undergone any major changes until a few years ago, probably due to the technical difficulty involved in performing a laparoscopic transplant. With the introduction of robotic technology, the difficulties derived from laparoscopic surgery in certain procedures have been reduced, so we can now offer a minimally invasive approach to kidney recipients. METHODS: Review of published literature on robotic kidney transplantation...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28530257/mathematical-model-for-preoperative-identification-of-obstructed-nasal-subsites
#11
M Gamerra, E Cantone, G Sorrentino, R De Luca, M B Russo, E De Corso, F Bossa, A De Vivo, M Iengo
The planning of experimental studies for evaluation of nasal airflow is particularly challenging given the difficulty in obtaining objective measurements in vivo. Although standard rhinomanometry and acoustic rhinometry are the most widely used diagnostic tools for evaluation of nasal airflow, they provide only a global measurement of nasal dynamics, without temporal or spatial details. Furthermore, the numerical simulation of nasal airflow as computational fluid dynamics technology is not validated. Unfortunately, to date, there are no available diagnostic tools to objectively evaluate the geometry of the nasal cavities and to measure nasal resistance and the degree of nasal obstruction, which is of utmost importance for surgical planning...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28530067/-stereotactic-ablative-body-radiation-sabr-a-new-therapeutic-option-for-treatment-of-stage-i-lung-cancer
#12
REVIEW
Sarit Appel, Zvi Symon
Stereotactic ablative radiotherapy (SABR) also known as stereotactic body radiation therapy (SBRT) offers a new therapeutic option for stage 1 lung cancer that cannot undergo surgery due to co-morbidities or patient refusal. This treatment evolved in the last decade thanks to technologic advancement of radiation therapy planning and delivery that allow real time imaging of the tumor and real time position correction before every treatment. Ultra high doses of radiation cause ablation of the target with very low collateral scatter dose to surrounding tissue...
November 2016: Harefuah
https://www.readbyqxmd.com/read/28529664/patient-specific-3d-models-aid-planning-for-triplane-proximal-femoral-osteotomy-in-slipped-capital-femoral-epiphysis
#13
L Cherkasskiy, J P Caffrey, A F Szewczyk, E Cory, J D Bomar, C L Farnsworth, M Jeffords, D R Wenger, R L Sah, V V Upasani
PURPOSE: Slipped capital femoral epiphysis (SCFE) can result in a complex three-dimensional (3D) deformity of the proximal femur. A three-plane proximal femoral osteotomy (TPFO) has been described to improve hip mechanics. The purpose of this study was to evaluate the benefits of using 3D print technology to aid in surgical planning. PATIENTS AND METHODS: Fifteen children treated with TPFO for symptomatic proximal femoral deformity due to SCFE were included in this study...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28523082/three-dimensional-printing-custom-made-implants-for-craniomaxillofacial-reconstructive-surgery
#14
REVIEW
Mariana Matias, Horácio Zenha, Horácio Costa
Craniomaxillofacial reconstructive surgery is a challenging field. First it aims to restore primary functions and second to preserve craniofacial anatomical features like symmetry and harmony. Three-dimensional (3D) printed biomodels have been widely adopted in medical fields by providing tactile feedback and a superior appreciation of visuospatial relationship between anatomical structures. Craniomaxillofacial reconstructive surgery was one of the first areas to implement 3D printing technology in their practice...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28522183/operating-environment-for-awake-brain-surgery-choice-of-tests
#15
REVIEW
M Wager, P Rigoard, C Bouyer, V Baudiffier, V Stal, B Bataille, R Gil, F Du Boisgueheneuc
INTRODUCTION: The indication for awake brain surgery depends on a prerequisite, i.e. recognition that the brain area concerned is truly eloquent, and identification of one or more functions that must be preserved. These functions are determined preoperatively in collaboration with the patient, and neuropsychological tests considered to be the most relevant are performed in the operating room according to each team's technical preferences. OPERATING ENVIRONMENT: The neurosurgeon must choose transfer equipment considered to be relevant...
May 15, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28516968/preliminary-experience-with-4k-ultra-high-definition-endoscope-analysis-of-pros-and-cons-in-skull-base-surgery
#16
M Rigante, G La Rocca, L Lauretti, G Q D'Alessandris, A Mangiola, C Anile, A Olivi, G Paludetti
During the last two decades endoscopic skull base surgery observed a continuous technical and technological development 3D endoscopy and ultra High Definition (HD) endoscopy have provided great advances in terms of visualisation and spatial resolution. Ultra-high definition (UHD) 4K systems, recently introduced in the clinical practice, will shape next steps forward especially in skull base surgery field. Patients were operated on through transnasal transsphenoidal endoscopic approaches performed using Olympus NBI 4K UHD endoscope with a 4 mm 0° Ultra Telescope, 300 W xenon lamp (CLV-S400) predisposed for narrow band imaging (NBI) technology connected through a camera head to a high-quality control unit (OTV-S400 - VISERA 4K UHD) (Olympus Corporation, Tokyo, Japan)...
June 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28516966/expanded-transcanal-transpromontorial-approach-to-the-internal-auditory-canal-and-cerebellopontine-angle-a-cadaveric-study
#17
L Presutti, M Bonali, D Marchioni, G Pavesi, A Feletti, L Anschuetz, M Alicandri-Ciufelli
The aim of this paper is to describe and evaluate the feasibility of an expanded endoscopic transcanal transpromotorial approach (ExpTTA) to the internal auditory canal and the cerebellopontine angle. To this end, we performed a cadaveric dissection study in September 2015. In total, 2 heads (4 sides) were dissected focusing on anatomical landmarks and surgical feasibility. Data from dissections were reviewed and analysed for further consideration. In all 4 sides of the cadavers the procedure was feasible. In all cadavers, it was necessary to extensively drill the temporo-mandibular joint and to calibrate the external ear canal to allow adequate room to manoeuver the instruments and optics and to comfortably access the cerebellopontine angle...
June 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28514384/-innovative-endoscopic-technologies-in-multi-field-medical-facility
#18
O E Karpov, P S Vetshev, A S Maady, K I Alekseev, A S Osipov, I V Vasiliev
The modern clinical practice is characterized by intensive introduction of innovative technologies for improving treatment and diagnostic procedures, minimizing their impact on the patient, complications rate and economic reasons. One of the priorities in this area is both diagnostic and therapeutic endoscopy. The degree of practical use of innovative endoscopic technologies depends on not only the quality of care, but also their economic reasons. Endoscopic treatment has become the method of choice for gastrointestional bleeding, extraction of foreign bodies, obstructive jaundice, polyps of the gastrointestinal tract, achalasia, esophageal strictures, etc...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28514382/-laser-technologies-in-treatment-of-posttraumatic-rectal-fistulas
#19
N I Mamedov, M M Mamedov
AIM: To assess the results of surgical treatment of posttraumatic rectal fistulas using current laser technology. MATERIAL AND METHODS: Surgical treatment of 134 (10.9%) patients with posttraumatic rectal fistulas was analyzed. The control group of conventional treatment included 58 (43.3±3.4%) patients, the main group - 76 (56.7±3.4%) patients. In the main group we used carbon dioxide laser device 'Lancet-2' (Russia) with a wavelength of 10.6 microns, capacity up to 20 W, and contact laser device 'Atkus-15' (Russia) with a wavelength of 0...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28512850/in-situ-handheld-3d-bioprinting-for-cartilage-regeneration
#20
Claudia Di Bella, Serena Duchi, Cathal D O'Connell, Romane Blanchard, Cheryl Augustine, Zhilian Yue, Fletcher Thompson, Christopher Richards, Stephen Beirne, Carmine Onofrillo, Sebastien H Bauquier, Stewart D Ryan, Peter Pivonka, Gordon G Wallace, Peter F Choong
Articular cartilage injuries experienced at an early age can lead to the development of osteoarthritis later in life. In situ 3D printing is an exciting and innovative bio-fabrication technology that enables the surgeon to deliver tissue- engineering techniques at the time and location of need. We have created a hand- held 3D printing device (Biopen) that allows the simultaneous co-axial extrusion of bioscaffold and cultured cells directly into the cartilage defect in vivo in a single session surgery. This pilot study assesses the ability of the Biopen to repair a full thickness chondral defect and the early outcomes in cartilage regeneration, and compares these results to other treatments in a large animal model...
May 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
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