ESI Software Solutions Benefit the Biomedical Sector
April 02 2015 - 12:14PM
ESI Group
, pioneer and world-leading solution provider
in Virtual Prototyping
for manufacturing
industries, and partner of numerous R&D projects in the
biomedical sector for many years, announces the results of
technical studies recently carried out in France. These studies,
performed in collaboration with a hip prosthesis manufacturer, have
led to a better understanding of the issues related to the
manufacturing, placement and in-vivo mechanical behavior of such
prostheses. These studies clearly illustrate the potential for
numerical simulation in the medical sector.
The fitting of total hip prostheses is one of
the top five operations in orthopedic surgery today; and such
surgeries are steadily rising according to statistics from the
French Hospital Information Technology Agency (ATIH)1. With
patients - especially athletes - needing surgery at an increasingly
younger age, and with growing life expectancies, prostheses must
last longer. These requirements for increased longevity and comfort
raise several new challenges for doctors as well as for prosthesis
manufacturers.
For manufacturers, new materials, including
ceramics and metal alloys, must be evaluated and the design of
prostheses must take into account various issues related to
breakage, wear and noise. Doctors, on the other hand, try to
mitigate the possible consequences of a micro separation between
the prosthesis' femoral head and the cavity in which it is inserted
(the 'cup'). This separation can cause micro impacts during daily
use and result in premature wear.
For nearly a year the teams at ESI in France
have conducted a study to help doctors and manufacturers better
understand the phenomena that lead to prosthetic malfunctions. The
first study was conducted to accurately simulate the kinematics and
the various stresses applied on a hip prosthesis in order to
understand the physics taking place in cases of extreme load,
experienced in accidental cases. The teams used ESI's integrated
CAE platform, Visual-Environment to build models from geometry and
material description provided by the manufacturer. They then
switched to ESI's Virtual Performance Solution to study an impact
equivalent to 9K Newton in 9ms, which is representative of a severe
shock, such as a patient heavily falling down the stairs. Using ESI
software solutions, the study has allowed doctors and manufacturers
to very accurately describe the kinematics and contact areas
following a decoaptation (separation of the femoral head and cup)
of the prosthesis.
A second study was conducted on behalf of a
prosthesis manufacturer, Science et Médecine (SEM), based in
Créteil, near Paris, France. The aim was to compare three different
designs of modular prostheses fabricated from vanadium alloys, to
determine which one was the most resistant in accidental cases. The
precise simulation of the fitting process of the prostheses has
helped SEM to accurately determine their future positioning, as
well as the structural damage expected when regulatory tests are
performed.
"Numerical simulation is commonly used by SEM to
achieve reliable design and ensure the safe use of our medical
devices. We are very sensitive to software improvements, especially
those incorporating dynamic simulation. The study conducted in
partnership with ESI has improved our understanding of the
mechanical behavior of our prostheses, for each tested design. The
recent developments of simulation tools help us in increasing the
reliability of medical devices including those requiring
assemblies", explains Mr. Bréard,
Research and Development Director, Science et Médecine.
|
Image:
Simulation results in Virtual Performance Solution: mechanical
stresses for a given load case. |
For Fouad El-Khaldi, Industrial
Strategy and Innovation Director for ESI Group, this study in the
health sector is part of the company's diversification strategy. He
explains, "ESI has already proven its value in helping companies in
the automotive, aerospace, energy and electronics domains. Now many
other industries are turning to Virtual Prototyping as they see the
benefits of being able to precertify products and anticipate
product issues. Obviously, the health sector represents a huge
potential market because simulation can solve customization issues
and help manufacturers deliver the best solution for each and every
patient, in less time and at an affordable cost."
1 Source : « Typologie et épidémiologie des prothèses totales de
hanche en France », J Caton, P Papin (2012)
For more information about Visual-Environment, please visit
http://www.esi-group.com/visual-environment For more information
about Virtual Performance Solution, please visit
www.esi-group.com/VPS
For more ESI news, visit: www.esi-group.com/press
ESI Group - Media Relations Céline Gallerne
Celine.Gallerne@esi-goup.com +33 1 41 73 58 46
For additional information, please feel free to contact
our international communications team:
North America
Natasha Petrous +1 248 3818 661 |
Germany, Austria,
Switzerland Alexandra Lawrenz +49 6102 2067
183 |
South
America Daniela Galoflo +55 11 3031
6221 |
United
Kingdom Hannah Amiss +44 1543 397 905
|
Italy
Maddalena Marinucci +39 051 633 5577 |
Japan
Nozomi Suzuki +81 363818486 |
France
Gaëlle Lecomte +33 4 7814 1210 Eastern
Europe Lucie Sebestova +420
511188875 |
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About ESI Group
ESI is a world-leading provider of
Virtual Product Engineering software and services with a strong
foundation in the physics of the materials of which products are
built.
Founded over 40 years ago, ESI has
developed a unique proficiency in helping industrial manufacturers
replace physical prototypes by virtually replicating the
fabrication, assembly and testing of products in different
environments. Virtual Prototyping enables ESI's clients to evaluate
the performance of their product, and the consequences of its
manufacturing history, under normal or accidental conditions. By
benefiting from this information early in the process, enterprises
know whether a product can be built, and whether it will meet its
performance and certification objectives, before any physical
prototype is built. To enable customer innovation, ESI's solutions
integrate the latest technologies in high performance computing and
immersive Virtual Reality, allowing companies to bring products to
life before they even
exist.
Today, ESI's customer base spans
nearly every industry sector. The company employs about 1000
high-level specialists worldwide to address the needs of customers
in more than 40 countries. For further information, visit
www.esi-group.com.
News Release in PDF
http://hugin.info/156812/R/1908690/680221.pdf
HUG#1908690
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