OBJECTIVES/HYPOTHESIS Although the theoretical risk of elevated temperatures during endoscopic ear surgery has been reported previously, neither temperature change nor heat distribution associated with the endoscope has been quantified. In this study, we measure temperature changes during rigid middle ear endoscopy in a human temporal bone model and investigate whether suction can act as a sign...

BACKGROUND Three-dimensional (3-D) endoscopy is a recent addition to augment the transsphenoidal surgical approach for anterior skull-base and parasellar lesions. We describe our experience implementing this technology into regular surgical practice. OBJECTIVE Retrospective review of clinical factors and outcomes. METHODS All patients were analyzed who had endoscopic endonasal parasellar op...

Abstract In current endoscopes, the estimation of proximity to surrounding tissue is based on experience user. To provide precise meassurement, a suitable sensor needed. This paper presents fiber optic that inserted through working channel an endoscope. The impact cutting angle at distal end optical investigated. If cut 3° axis, measurement signal in axial direction can be increased by 126mV pe...

Capsule endoscopy has gained a lot of attention in the medical field recent past as an effective way investigating unusual symptoms experienced places such esophagus, stomach, small intestine and colon. However, motion control capsule endoscope is challenging often requires power source miniature actuators. To address these issues, we present novel origami inspired structure attachment to endos...

METHODS: This new endoscope called SolidFlexTM has been brought to light with the latest technology to provide surgeons of every age the capabilities to carry out any possible endoscopic procedure. SolidFlexTM is state-of-the-art in both design and construction, giving the instrument a much better balance with only one third of the weight of the usual flexible endoscope. The Instrument is ergon...

We report a flexible shaft-based mechanical scanning photoacoustic endoscopy (PAE) system that can be potentially used for imaging the human gastrointestinal tract via the instrument channel of a clinical video endoscope. The development of such a catheter endoscope has been an important challenge to realize the technique's benefits in clinical settings. We successfully implemented a prototype ...

A 62-year-old man was admitted with hematemesis. He had been diagnosed to have hepatitis B-related cirrhosis 4 months earlier, and had not undergone esophagogastroduodenoscopy (EGD) previously. He had no history of dysphagia. During intubation with an endoscope (GIF Q-150, Olympus, Japan), resistance was encountered at the upper esophageal sphincter, and a diverticulum was noted at this level. ...

BACKGROUND Nasopharyngeal surgery is commonly performed with a rigid endoscope using a transnasal or transoral approach. Here, we demonstrate a flexible single port computer-assisted endoscopic system enabling easy transoral access to the nasopharynx. METHODS Transoral nasopharyngeal surgery was performed in human cadavers (n = 8) using the Flex System (Medrobotics, Raynham, MA). Learning cur...

A new strategy that employs an exocyclic stereocenter to effect diastereocontrol in the tethered aminohydroxylation (TA) reaction is applied to the stereoselective synthesis of a range of amino alcohols in good to excellent yields, and with anti selectivities of up to 20:1. The influence of the reaction conditions and substrate parameters on the level of diastereocontrol is described. Furthermo...