Publications by Evren Samur | EPFL Graph Search

Tactile Feedback Improves Performance in a Palpation Task: Results in a VR-Based Testbed

Hannes Bleuler, Roger Gassert, Kaspar Leuenberger, Evren Samur, Laura Santos Carreras

Robotic surgery provides many benefits such as reduced invasiveness and increased dexterity. This comes at the cost of no direct contact between surgeon and patient This physical separation prevents surgeons from performing direct haptic exploration of tis ...

Mit Press2012

Experimental Evaluation of a Haptic Interface for Endoscopic Simulation

Hannes Bleuler, Lionel Flaction, Evren Samur

The main goal of virtual reality based surgery simulators with haptic feedback is to provide an alternative to traditional training methods on animals, cadavers or real patients. Haptic feedback is a key feature for every surgery simulator for the training ...

2011

Design and Evaluation of a Novel Haptic Interface for Endoscopic Simulation

Hannes Bleuler, Lionel Flaction, Evren Samur

Inspection of the colon with an endoscope for early signs of cancer (colonoscopy) has become an extremely widespread procedure, since early treatment radically improves the outlook of patients. The procedure requires a close coordination between the sense ...

Ieee Computer Soc2011

Haptic interface for simulator, such as a colonoscopy simulator

Pascal Maillard, Lionel Flaction, Evren Samur

The device (1 ) comprises an endoscopic interface (2) with a guiding tube (4) for guiding an endoscope, said tube (4) being mounted on bearings (5) for free rotation and comprising windows for allowing a contact between said endoscope and friction rollers ...

2011

Haptic/VR Assessment Tool for Fine Motor Control

Hannes Bleuler, Roger Gassert, Olivier Lambercy, Evren Samur, Christophe Emery

The Nine Hole Peg Test (NHPT) is routinely used in clinical environments to evaluate a patient’s fine hand control. A physician measures the total time required to insert nine pegs into nine holes and obtains information on the dexterity of the patient. Ev ...

Springer Berlin / Heidelberg2010

Systematic Evaluation Methodology and Performance Metrics for Haptic Interfaces

Evren Samur

The purpose of evaluation procedures for haptic interfaces is to achieve both qualitative and quantitative statements on haptic rendering realism and performance. Since haptics technology is being increasingly used in computer games, surgical simulators, m ...

EPFL2010

A modular simulation framework for colonoscopy using a new haptic device

Hannes Bleuler, Ulrich Spälter, Evren Samur

We have developed a multi-threaded framework for colonoscopy simulation utilising OpenGL with an interface to a real-time prototype colonoscopy haptic device. A modular framework has enabled us to support multiple haptic devices and efficiently integrate n ...

IOS Press2008

A Real-Time Simulator for Interventional Radiology

Hannes Bleuler, Lindo Robert Duratti, Fei Wang, Evren Samur

Interventional radiologists manipulate guidewires and catheters and steer stents through the patient’s vascular system under X-ray imaging for treatment of vascular diseases. The complexity of these procedures makes trainingmandatory in order to master han ...

2008

Instrumentation of a Clinical Colonoscope for Surgical Simulation

Hannes Bleuler, Pascal Maillard, Lionel Flaction, Evren Samur

This paper describes the instrumentation of a clinical colonoscope needed for a novel colonoscopy simulation framework. The simulator consists of a compact and portable haptic interface and a virtual reality environment to provide real-time visualization. ...

2008

A Haptic Interface with Motor/Brake System for Colonoscopy Simulation

Hannes Bleuler, Ulrich Spälter, Lionel Flaction, Evren Samur

Training for colonoscopy, which is the examination and treatment of the colon, is often performed on real patients once the physician has passed the novice level. This increases the risk to the patient and lengthens the procedure time. Since a decade ago, ...

2008

Control of a Haptic Interface and a Micromachining Setup with an Open Source Real-Time System

Rolf Wüthrich, Hannes Bleuler, Pascal Maillard, Ulrich Spälter, Lionel Flaction, Evren Samur

Open source software have evolved into powerful tools for real-time control of mechatronic systems. They are of interest for academic purposes, as they promise high flexibility at low cost. In this paper, we investigate the performance of an open source co ...

2007

Generic and Systematic Evaluation of Haptic Interfaces Based on Testbeds

Hannes Bleuler, Ulrich Spälter, Fei Wang, Evren Samur

The purpose of evaluation procedures is to achieve both qualitative and quantitative statements on haptic rendering realism and performance. Since a haptic interface provides an interaction between a user and a virtual environment, fidelity of a haptic int ...

IEEE2007

A Computer-Based Real-Time Simulation of Interventional Radiology

Hannes Bleuler, Lindo Robert Duratti, Ulrich Spälter, Fei Wang, Evren Samur

Interventional radiology is a minimally invasive procedure where thin instruments, guidewires and catheters or stents are steered through the patient’s vascular system under X- ray imaging for treatment of vascular diseases. The complexity of these procedu ...

2007

A 2-DOF Friction Drive for Haptic Surgery Simulation of Hysteroscopy

Hannes Bleuler, Ulrich Spälter, Evren Samur

2006