This author has yet to write their bio.Meanwhile lets just say that we are proud Ken Perry contributed a whooping 29 entries.
This is a picture of an excised mitral valve from a pig with suture and a clip holding the leaflets together in a novel approach to treating mitral valve regurgitation. It was placed percutaneously using a specially designed catheter. The superelastic Nitinol clip was designed and developed using Finite Element Analysis (FEA). You can download the patent protecting […]
You can download my presentation at the 2007 Cleveland Clinic Stent Summit on carotid artery stent fractures from an engineers perspective which discusses combined loading conditions, fatigue, material limits and other factors.
You can download a poster I presented at the MPMD fall 2007 conference illustrating our method for characterizing Nitinol material behavior for the design and validation of medical implants.
The Biological Systems and Materials Division has been focusing on embracing and serving the duality of its membership, which consists of many established members of the society and the field of theoretical and applied mechanics who are developing research programs focusing on biological systems and materials, and simultaneously numerous researchers from the biological sciences who […]
You can download our presentation where we give results from recent in-vitro tests and advanced finite element analysis simulations as an example of a comprehensive and self-consistent engineering methodology for understanding therapeutic applications of RF tissue ablation:
Radial force behavior is one of many engineering design criteria important to the design of implantable medical devices such as stents. Interpretation and extrapolation of bench-top data to predict in-vivo performance necessitates a thorough understanding of influence parameters such as boundary conditions and material uncertainty. An integrated modeling and test validation approach is needed to […]
You can download our presentation of Nitinol fatigue and fracture initiation using phase shifted moire interferometry:
Phase shifted moiré interferometry is used to measure full-field strain during uniaxial tension and four point bend loading of nitinol test samples. Differences between global and full field measurements reveal the effects of localized transformation behavior. Results for two heat treatments of commercially available superelastic Nitinol are presented for tests conducted under controlled temperature conditions. […]
An overview of the typical in-vitro test methods used to characterize the performance of Nitinol stents is presented. Characterization requires a consistent definition and understanding of radial force as well as a consideration of the sensitivity of the various methods to friction, fixture compliance, material uncertainty and other experimental factors. These sensitivities are demonstrated using […]
Cardiovascular Implant DurabilityOctober 6, 2019 - 3:05 pm
Improving Medicine with Philosophy of ScienceNovember 9, 2018 - 3:19 pm
Digital Image Correlation for Medical ImplantsOctober 4, 2018 - 12:33 pm
Faster Learning Beats Better PlanningSeptember 5, 2018 - 5:23 pm
Theory of Critical Distances and Design ValidationJuly 5, 2018 - 5:23 pm