Endoscopes for industrial and medical fields are expected to have multi degree-of-freedom (DOF) motions. A multi-DOF ultrasonic motor we developed consists of a spherical rotor and a bar-shaped stator, and the rotor rotates around three perpendicular axes using three natural vibration modes of the stator. In this study, a multi-DOF unilateral master-slave system for active endoscope using the m...

There is little information available on the bacteriological contamination of upper gastrointestinal fibreoptic endoscopes during routine use and the effects of 'disinfecting solutions'. A bacteriological evaluation was therefore made of cleaning an endoscope and its ancillary equipment with (1) water, (2) an aqueous solution of 1% cetrimide with 0.1% chlorhexidine, and (3) activated aqueous 2%...

Background. Microvascular decompression (MVD) is a widely accepted treatment for neurovascular disorders associated with facial pain and spasm. The endoscope has rapidly become a standard tool in neurosurgical procedures; however, its adoption in lateral approaches to the posterior fossa has been slower. The endoscope is used primarily to assist conventional microscopic techniques. We are inter...

BACKGROUND Stomach and esophageal cancers are both deadly and difficult to diagnose early. Stomach cancer is the second most common cancer in Asia. Both these are one of the most common causes of cancer related death in the world. AIM To determine the mean time delay from appearance of the symptoms to the endoscope procedure [OGDS] and rationalized the reason for this delay in diagnosis. ME...

To evaluate the effectiveness of endoscopic surgery for life-threatening large brain hemorrhage, we reviewed our empirical cases of comatose patients with large supratentorial intracerebral hemorrhage. Among 35 patients with putaminal or subcortical hemorrhage that was evacuated endoscopically, 14 cases (40%) presented both findings of neurological grade IV for severity and hematoma volume exce...

More than 10 million gastrointestinal endoscopic procedures areperformedannually in theUnitedStates fordiagnosticpurposes, therapeutic interventions, or both.1 Because gastrointestinalendoscopescontactmucosal surfaces,useofacontaminated endoscope may lead to patient-to-patient transmission of potential pathogens with a subsequent risk of infection.1 In this issue of JAMA, Epstein and colleagues...

We aim to track the endoscope location inside the surgical scene and provide 3D reconstruction, in real-time, from the sole input of the image sequence captured by the monocular endoscope. This information offers new possibilities for developing surgical navigation and augmented reality applications. The main benefit of this approach is the lack of extra tracking elements which can disturb the ...

BACKGROUND In patients with incomplete colonoscopy, cecal intubation is sometimes unsuccessful due to a redundant or tortuous colon. Repeat colonoscopy may be successful with the use of alternate endoscopes or careful attention to technique but limited outcomes data is available. The aim of this study was to describe the technique, success rate and outcomes of consecutive patients referred for ...

Bone reconstruction using endoscopy is important for computer aided minimally invasive orthopedic surgery. During surgery an endoscope consisting of a camera and one or more light sources is inserted through a small incision into the body and the acquired images are analyzed. Since bone surface is featureless, shading is the primary cue for shape perception. However, due to the small field of v...

Magnetic manipulation of capsule endoscopes has the potential to make current gastrointestinal screening procedures faster, safer, and less invasive. To date, two electromagnetic systems have been developed with the ability to perform five-degree-of-freedom (5-DOF) manipulation of an untethered magnetic device such as a magnetic capsule endoscope: the OctoMag system consists of eight electromag...