نتایج جستجو برای: surgical instrument detection

تعداد نتایج: 963474  

2002
Alexandre Krupa Christophe Doignon Jacques Gangloff Michel de Mathelin Guillaume Morel Luc Soler Joël Leroy Moji Ghodoussi

This paper presents the first live experimental results of a project aimed at developing semi-autonomy for a laparoscopic surgical robot. To achieve this goal, a special instrument-holder was designed with optical fibers and collimators. This instrument-holder projects laser dot patterns onto the organ surface which are seen in the endoscopic images. The instrument is manipulated by a commercia...

1997
Alan Liu Elizabeth Bullitt Stephen M. Pizer

We present a new method of intraoperative, image-based surgical instrument guidance. The method has the potential to significantly improve visualization of intraoperative procedures that currently depend on fluoroscopic images for navigation. 3D information from preoperative computed tomography (CT) is fused with images of the instrument taken intraoperatively. Our approach employs synthesized ...

2015
Jesús M. Gómez de Gabriel William S. Harwin

Designing surgical instruments for robotic-assisted minimally-invasive surgery (RAMIS) is challenging due to constraints on the number and type of sensors imposed by considerations such as space or the need for sterilization. A new method for evaluating the usability of virtual teleoperated surgical instruments based on virtual sensors is presented. This method uses virtual prototyping of the s...

2002
Alexandre Krupa Christophe Doignon Jacques Gangloff Michel de Mathelin

In this paper, we address the problem of controlling the motion of a surgical instrument closed to an unknown organ surface by visual servoing in the context of robotized laparoscopic surgery. To achieve this goal, a visual servoing algorithm is developped that combines feature errors in the image and errors in depth measurements. The relationship between the velocity screw of the surgical inst...

Journal: :Journal of the Japan Veterinary Medical Association 2006

2016
Jae Hong Ahn Chae Hoon Kang Soo-Jung Choi Man Soo Park Seung Mun Jung Dae Shick Ryu Dong Rock Shin

Many hospitals experience one or more retained surgical instrument events with risk of patient morbidity and medicolegal problems. Identification of retained surgical instrument is important. The radiologists should be familiar with imaging finding of retained surgical instrument. In a 62-year-old female with a retained plastic tube, localized peritoneal infiltration around air-containing tubul...

Journal: :Journal of the American College of Surgeons 2014
Emily Walker Stockert Alexander Langerman

BACKGROUND Efficiency in the operating room has become a topic of great interest. This study aimed to quantify the percent use of instruments among common instrument trays across 4 busy surgical services: Otolaryngology, Plastic Surgery, Bariatric Surgery, and Neurosurgery. We further aimed to calculate the costs associated with tray and instrument sterilization, as well as the implications of ...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده علوم انسانی و پایه 1393

burnout is a response to the chronic work stress which is prevalent mostly among the people who do people job, like teaching. the purpose of this study was to develop a valid and reliable instrument that can measure burnout in foreign language teachers. although some widely used instruments were developed before which measured burnout in teachers, a specific instrument which include specific sy...

2004
Clement Forest Hervé Delingette Nicholas Ayache

In surgery simulation, most existing methods assume that the contact between a virtual instrument and a soft tissue model occur at a single point. However, there is a gross approximation when simulating laparoscopic procedures since the instrument shaft is used in several surgical tasks. In this paper, we propose a new algorithm for modeling the collision response of a soft tissue when interact...

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