Publications de Willyan Hasenkamp Carreira

Smart instrumentation for determination of ligament stiffness and ligament balance in total knee arthroplasty

Kamiar Aminian, Philippe Renaud, Arnaud Bertsch, Brigitte Jolles-Haeberli, Arash Arami, Willyan Hasenkamp Carreira

Ligament balance is an important and subjective task performed during total knee arthroplasty (TKA) procedure. For this reason, it is desirable to develop instruments to quantitatively assess the soft-tissue balance since excessive imbalance can accelerate ...

Elsevier Sci Ltd2014

Design and test of a MEMS strain-sensing device for monitoring artificial knee implants

Kamiar Aminian, Philippe Renaud, Alexandre Terrier, Arnaud Bertsch, Arash Arami, Willyan Hasenkamp Carreira

This paper describes the development of a polyimide-based MEMS strain-sensing device. Finite element analysis was used to investigate an artificial knee implant and assist on device design and to optimize sensing characteristics. The sensing element of the ...

Springer2013

Flexible Micro/Nanofabricated Systems for Medical Devices and Implants

Willyan Hasenkamp Carreira

EPFL2013

Instrumented Knee Prosthesis for Force and Kinematics Measurements

Kamiar Aminian, Philippe Renaud, Pierre-André Farine, Peter Ryser, Catherine Dehollain, Arnaud Bertsch, Brigitte Jolles-Haeberli, Eric Meurville, Arash Arami, Steve Tanner

In this work, we present the general concept of an instrumented smart knee prosthesis for in-vivo measurement of forces and kinematics. This system can be used for early monitoring of the patient after implantation and prevent possible damage to the prosth ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Multiple-frequency impedance measurements in continuous flow for automated evaluation of yeast cell lysis

Philippe Renaud, Niccolo Piacentini, Willyan Hasenkamp Carreira

This paper reports on an electrical lysis device integrating multiple-frequency impedance measurements for automated evaluation of the lysis efficiency and counting of the lysed cells. Conventional techniques use chemical reagents to dissolve the cell memb ...

Elsevier2012

Simulation of epiretinal prostheses - Evaluation of geometrical factors affecting stimulation thresholds

Philippe Renaud, Arnaud Bertsch, Willyan Hasenkamp Carreira, Sri Harsha Kasi Raj, Grégoire Cosendai

Background An accurate understanding of the electrical interaction between retinal prostheses and retinal tissue is important to design effective devices. Previous studies have used modelling approaches to simulate electric fields generated by epiretinal p ...

BioMed Central2011

Instrumented Prosthesis for Knee Implants Monitoring

Kamiar Aminian, Philippe Renaud, Pierre-André Farine, Peter Ryser, Catherine Dehollain, Arnaud Bertsch, Eric Meurville, Brigitte Jolles-Haeberli, Arash Arami, Steve Tanner

In this work we present an instrumented smart knee prosthesis for in-vivo measurement of forces and kinematics. Studying the constraints, we designed minimal sensory systems to be placed in the polyethylene part of the prosthesis. The magnetic sensors and ...

IEEE2011

Multiple-frequency Impedance Measurements in Continuous Flow for the Evaluation of Electrical Lysis of Yeast Cells

Philippe Renaud, Niccolo Piacentini, Willyan Hasenkamp Carreira

his paper reports on an electrical lysis device with integrated cell counting and evaluation of the lysis efficiency by multiplefrequency impedance measurements. Conventional techniques use chemical reagents to lyse cells, causing unwanted interference wit ...

Elsevier2010