Publications de Charles Baur | EPFL Graph Search

Publications associées (42)

Endoscopic navigation for minimally invasive suturing

Manipulating small objects such as needles, screws or plates inside the human body during minimally invasive surgery can be very difficult for less experienced surgeons due to the loss of 3D depth perception. Classical navigation techniques are often incap ...

2008

A Framework for Intraoperative Update of 3D Deformable Models in Liver Surgery

Charles Baur

Efficient computer assisted surgery dealing with soft tissues remains a complex task. In most cases, the preoperative information such as 3D organ reconstructions and the planning built upon are no longer valid during the surgical process itself due to the ...

2008

Surgical navigation system

Charles Baur

The invention relates to a surgical navigation system, comprising a microscope to which a 3D measuring apparatus is rigidly fixed, for localising objects within the field of operation. Markers are fixed to the objects the position of which is desirable to ...

2005

Robotic system for cervical spine surgery

Charles Baur

Background In contemporary surgical clinical practice, spinal instability is often treated with mechanical stabilization techniques in order to protect the spinal cord and nerve roots. These techniques involve placing screws in defined regions of the verte ...

2012

Fast Wavelet based Ultrasound Image Segmentation for Liver Vessels Extraction

Charles Baur

A method for extracting in real-time the position and size of liver vessels from 2D ultrasound images is described. It proceeds in two steps. Starting with a rough localization of the vessels using the scale-space theory, seed points are defined. Then, ves ...

2008

Active : A unified platform for building intelligent web interaction assistants

Charles Baur, Didier René Guzzoni

Computer systems keep growing in complexity, processing power and web connectivity. To leverage this rich environment and to better assist users, a new type of intelligent assistant software is required. Building intelligent assistants is a difficult task ...

2006

Active, a Tool for Building Intelligent User Interfaces

Charles Baur, Didier René Guzzoni

Computers have become affordable, small, omnipresent and are often connected to the Internet. However, despite the availability of such rich environment, user interfaces have not been adapted to fully leverage its potential. To help with complex tasks, a n ...

ACTA Press2007

A statistical shape model of the human second cervical vertebra

Reto Meuli, Simon Nessim Henein, Charles Baur, Marine Chantal Elisabeth Geneviève Clogenson

Statistical shape and appearance models play an important role in reducing the segmentation processing time of a vertebra and in improving results for 3D model development. Here, we describe the different steps in generating a statistical shape model (SSM) ...

Springer Heidelberg2015

ACTIVE, A PLATFORM FOR BUILDING INTELLIGENT OPERATING ROOMS

Charles Baur, Didier René Guzzoni

Today computers are part of the standard equipment of modern surgery rooms. They assist surgeons in performing complex procedures that would not be possible otherwise. However, despite the availability of more powerful and complex computer systems, their u ...

Sauramps Médical2007

Design and modelling of a compliant constant-force surgical tool for objective assessment of ossicular chain mobility

Simon Nessim Henein, Charles Baur, Loïc Benoît Tissot-Daguette

Surgeons generally assess the mobility of the ossicle chain by manual palpation using rigid elongated hooks inserted through the ear canal. As the applied forces are in the range of a few grams equivalent force, the measurement remains subjective and its r ...

IEEE2021

Bistable Puncturing Tool for Retinal Vein Cannulation

Simon Nessim Henein, Yves Bellouard, Charles Baur, Lisa Anaïs Jeanne Bonnefoy

An innovative surgical tool prototype dedicated to safe puncturing has been developed for the treatment of retinal vein occlusions (RVOs). The tool is manufactured monolithically by femtolaser printing in fused silica. It consists of a programmable bistabl ...

2020

Programmable Multistable Mechanisms for Safe Surgical Puncturing

David Lambelet, Arno Rogg, Simon Nessim Henein, Charles Baur, Ilan Vardi, Andrea Lovera, Thomas Jean Julien Fussinger, Mohamed Gamal Abdelrahman Ahmed Zanaty

We present novel medical devices for safe surgical puncturing, in particular a cannula for the treatment of retinal vein occlusion (RVO). This passive mechanical device has an adjustable stroke and exerts a puncturing force independent of operator applied ...

2019

Fully compliant snap-through bistable gripper mechanism based on a pinned-pinned buckled beam

Simon Nessim Henein, Charles Baur, Loïc Benoît Tissot-Daguette, Simon Hubert Prêcheur-Llarena

This paper presents a new planar flexure-based bistable two-jaw parallel gripper mechanism. The bistability of the mechanism is enabled by a pinned-pinned buckled beam suspended onto two cross-spring pivots. External energy is required only during the swit ...

2024

Design of a compliant load cell with adjustable stiffness

Charles Baur, Lennart Rubbert, Michal Stanislaw Smreczak

Manipulation at the sub-micron scale often requires force-sensing capabilities of milli-to nanonewton forces. This article presents a novel design of a compliant load cell with mechanically adjustable stiffness. The system enables adapting force sensitivit ...

2021

Load cell with adjustable stiffness based on a preloaded T-shaped flexure pivot

Simon Nessim Henein, Charles Baur, Loïc Benoît Tissot-Daguette, Michal Stanislaw Smreczak

In this paper, we present a new flexure-based load cell with adjustable stiffness designed for force sensors with extended force range and respective measuring resolution. This novel monolithic mechanism consists of a T-shaped flexure pivot combined with a ...

euspen2021

Robotic system for spinal and other surgeries

Charles Baur, Szymon Kostrzewski

The present invention relates to a method, such as a surgical method for assisting a surgeon for placing screws in the spine using a robot attached to a passive structure. The present invention also related to a method, such as a surgical method for assist ...

2012

Robust Method for Real-time, Continuous, 3D Detection of Obstructed Faces in Indoors Environments

Charles Baur, Sébastien Grange

We address the need for robust detection of obstructed human features in complex environments, with a focus on intelligent surgical UIs. In our setup, real-time detection is used to find features without the help of local (spatial or temporal) information. ...

2006

Real-Time Update of 3D Deformable Models for Computer Aided Liver Surgery

Charles Baur

Providing accurate image-guidance for soft-tissue interventions remains a complex task. Most of the time, preoperative models and planning data are no more valid during the surgical process due to motions and deformations of the organ of interest. In this ...

IEEE2009

High-precision flexure-based XY-stage with high stiffness and load capacity

Simon Nessim Henein, Charles Baur, Hubert Pierre-Marie Benoît Schneegans, Patrick Robert Flückiger, Simon Hubert Prêcheur-Llarena

Typical flexure-based XY-stages have a serial design, and their layout results in the flexures being loaded in flection in face of heavy payloads or vertical loads. This paper presents a design with zero parasitic shift in which all flexures are loaded in ...

2024

Sensor system

Simon Nessim Henein, Charles Baur, Thomas Jean Julien Fussinger, Hubert Pierre-Marie Benoît Schneegans, Lisa Anaïs Jeanne Bonnefoy

Sensor system (1) comprising a frame (306) supporting a force-sensing tip (310) arranged to generate a signal based upon a force applied by said force-sensing tip (310) to a material to be tested,characterised in that said system (1) further comprises:- an ...

2020