Two VEXTEC Articles Published in ASME’s Journal of Medical Devices

VEXTEC authored two articles which appeared in Journal of Medical Devices
VEXTEC authored two articles which appeared in Journal of Medical Devices
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* Brentwood - Tennessee - US

BRENTWOOD, Tenn. - March 3, 2014 - PRLog -- Two articles by VEXTEC authors were published in a recent issue of the American Society of Mechanical Engineers (ASME) Journal of Medical Devices. These articles are based on presentations given at their First Annual Conference on Frontiers in Medical Devices Conference: Applications of Computer Modeling and Simulation. The conference was held last year in Washington, D.C. It was co-chaired by Donna Lochner of the Food and Drug Administration and Walt Baxter of Medtronic. Those attending were primarily engineers from the biomedical industry and scientists from the Food and Drug Administration. The purpose of the conference was to bring about an open discussion of the technical challenges and potential solutions to increasing the usage of computational models in the medical device industry.

The first article is entitled “Using Probabilistic Computational Durability Modeling and Simulation to Create a Virtual Design of Experiments Based on Limited Laboratory Tests.” The authors include Ganapathi Krishnan and Robert Tryon of VEXTEC, along with S. Kulkarni, C. Clerc and K. Merdan of Boston Scientific Corporation. The high cost of fatigue testing severely limits the number of tests that can be run, therefore it is necessary to pair it with computational modeling to get the most out of the testing that is done. The authors answer the question “How do we combine results from the laboratory testing of similar designs and similar materials with state-of-the-art computational methods to create the best possible understanding of the design space?” Boston Scientific selected two products to examine: An airway stent and a pacemaker lead. They provided finite element analysis and test results which VEXTEC used in its Virtual Life Management software.

The second article is “Computational Models to Predict the Structural Reliability of Aerospace Systems”. Despite its title, it was presented at the conference. The medical device community wanted to see what types of computational models are being created in the aerospace industry and how they are used. Currently, the medical device industry relies primarily on testing instead of computer modeling. This article was authored by Robert Tryon, Animesh Dey, Richard Holmes and Ganapathi Krishnan, all employees of VEXTEC. In the paper, three different case studies were presented. These studies examined (1) A rotor of a gas turbine engine used on a helicopter, (2) A repair process of fan blades and (3) bearings for an auxiliary power unit.

These articles are in Volume 7, Issue 4 of the Journal of Medical Devices. Abstracts of both articles are available online at


VEXTEC ( was founded in 2000 and has developed its patented technology on virtual material modeling and predicting product durability. VEXTEC offers its Virtual Life Management (VLM) Services, to a variety of commercial and government customers. In addition, it also provides failure analysis and component re-design services, which are described at

Ashley Clark
615.372.0299 ext 233
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Tags:Medical, Devices, Computer, Modeling, Simulation
Industry:Engineering, Medical
Location:Brentwood - Tennessee - United States
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