نتایج جستجو برای: endoscope

تعداد نتایج: 3466  

Journal: :Advanced photonics research 2022

Quantitative in vivo measurement helps physicians determine abnormal tissue size or resection margin accurately. Herein, 3D imaging of features during endoscopic operation using a light switching microprojector is reported. The rotational offset microlens arrays and customized illumination fiber bundle fully integrated through single channel clinical endoscope. switches white into structured la...

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Journal: :The Journal of hospital infection 2004
W A Rutala D J Weber

Endoscopes are used frequently for the diagnosis and therapy of medical disorders. For example, greater than 10000000 gastrointestinal endoscopic procedures are performed each year in the United States. Failure to employ appropriate cleaning and disinfection/sterilization of endoscopes has been responsible for multiple nosocomial outbreaks and serious, sometimes life-threatening, infections. Fl...

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Journal: :The Review of scientific instruments 2012
A Huber S Brezinsek Ph Mertens B Schweer G Sergienko A Terra G Arnoux N Balshaw M Clever T Edlingdon S Egner J Farthing M Hartl L Horton D Kampf J Klammer H T Lambertz G F Matthews C Morlock A Murari M Reindl V Riccardo U Samm S Sanders M Stamp J Williams K D Zastrow C Zauner

A new endoscope with optimised divertor view has been developed in order to survey and monitor the emission of specific impurities such as tungsten and the remaining carbon as well as beryllium in the tungsten divertor of JET after the implementation of the ITER-like wall in 2011. The endoscope is a prototype for testing an ITER relevant design concept based on reflective optics only. It may be...

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Journal: :Revista espanola de enfermedades digestivas : organo oficial de la Sociedad Espanola de Patologia Digestiva 2014
Javier Sola-Vera Francisco Uceda Rubén Cuesta Narcís Vázquez

BACKGROUND Cholangioscopy is a useful tool for the study and treatment of biliary pathology. Ultrathin upper endoscopes allow direct peroral cholangioscopy (DPC) but have some drawbacks. OBJECTIVE The aim of the study was to evaluate the success rate of DPC with an ultrathin endoscope using a balloon catheter to reach the biliary confluence. MATERIAL AND METHODS Prospective observational st...

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2008
Hui-xian SUN Yu-hua ZHANG Fei-lu LUO

Industrial endoscopes inspection is an important method of remote visual testing. The endoscope image suffers from a nonlinear spatial distortion due to the wide-angle design of the endoscope’s objective lens. The spatial distortion causes the pixels shift, which makes the object distorted in an image. By correcting the pixel’s offset in Cartesian coordinate, a novel approach for nonlinear dist...

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2013
AS Jang C-S Park DJ Kim S-W Park

Methods A previously healthy 74-year-old woman visited our hospital to undergo esophagogastroduodenoscopy for a checkup. She had an allergy to soybean. Approximately 1 min following administration of intravenous propofol, stridor was heard and oxygen saturation fell to 56% on pulse oximetry. We decided to stop the exam, and tried to remove the endoscope. But, the endoscope has stuck in her thro...

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2014
M. TRIMARCHI P.V. TOMAZIC G. BERTAZZONI A. RATHBURN M. BUSSI H. STAMMBERGER

The anterior wall of the maxillary sinus represents a blind spot in maxillary sinus endoscopic surgery because of the absence of proper visualisation and instrumentation to reach it. The aim of this study was to validate a new approach through the oral cavity into the nose with a flexible video endoscope (oro-nasal endoscopic approach; ONEA) to visualise the entire anterior maxillary wall inclu...

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Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Steffi Sunny George Cheng Daniel Daniel Peter Lo Sebastian Ochoa Caitlin Howell Nicolas Vogel Adnan Majid Joanna Aizenberg

Camera-guided instruments, such as endoscopes, have become an essential component of contemporary medicine. The 15-20 million endoscopies performed every year in the United States alone demonstrate the tremendous impact of this technology. However, doctors heavily rely on the visual feedback provided by the endoscope camera, which is routinely compromised when body fluids and fogging occlude th...

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2016
Won-Suh Choi Jin-Sung Kim Kyeong-Sik Ryu Jung-Woo Hur Ji-Hoon Seong Hyun-Jin Cho

Background. Radiofrequency ablation (RFA) is a less invasive technique for treatment of sacroiliac joint (SIJ) pain. Objective. To evaluate the feasibility and efficacy of endoscope-guided RFA for the treatment of CLBP from the SIJ complex. Methods. In this retrospective study, the medical records of 17 patients who underwent endoscope-guided RFA of the SIJ complex were reviewed. A bipolar radi...

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2017
Lien Cattoir Thomas Vanzieleghem Lisa Florin Tania Helleputte Martine De Vos Bruno Verhasselt Jerina Boelens Isabel Leroux-Roels

OBJECTIVE To compare different techniques of endoscope sampling to assess residual bacterial contamination. DESIGN Diagnostic study. SETTING The endoscopy unit of an 1,100-bed university hospital performing ~13,000 endoscopic procedures annually. METHODS In total, 4 sampling techniques, combining flushing fluid with or without a commercial endoscope brush, were compared in an endoscope model. B...

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