This author has yet to write their bio.Meanwhile lets just say that we are proud andy contributed a whooping 11 entries.
We were recently invited to be a keynote speaker for Medical Device Standards: Technical Training on Cardiovascular Materials and Device Aspects at the PERU Workshop on Medical Device Regulation: Policy and Technical Aspects, November 2-4, 2015. The event was hosted by ASTM International Standards Alliance with USAID/ANSI. The primary audience was government regulators, national medical device technical […]
Today I presented preliminary results of our inter-laboratory fatigue study at the FDA/NHLBI/NSF Workshop. Dimensional variances were characterized for the gStent-BE and found typical of stainless steel stents. Good agreement was found between three labs for characterizing the stress-strain behavior. Preliminary data from the labs are in good agreement with a 50% survival of the […]
I was given the opportunity to discuss the State-of-the-Art Computational Modeling for Cardiovascular Devices at the FDA/NHLBI/NSF Workshop at the FDA White Oaks campus in Silver Spring, MD. A number of colleagues contributed examples of their work in the field so I was well prepared and excited to share what’s on the cutting edge. Hengchu […]
I just returned from a workshop sponsored by the FDA (and the NHLBI and NSF) on Computer Methods for Cardiovascular Devices. It was an excellent workshop providing an audience of regulatory, academic and industrial interests a chance to get caught up on the state-of-the-art, trends and, in general, to exchange ideas on the issues of […]
Follow this link to the ASTM website and find the long awaited for “Standard Guide for Finite Element Analysis of Metallic Vascular Stents Subjected to Uniform Radial Loading”. This guide establishes general requirements and considerations for using finite element analysis techniques for the numerical simulation of metallic stents subjected to uniform radial loading. These stents […]
You can download the brochure for this special symposium that brings together state-of-the-art developments in clinical imaging techniques, computer modeling, medical device testing and materials characterization with a focus on medical implants, their design and the Experimental Mechanics underlying device interaction with the human body.
At the 2006 SMST Conference in Asilomar Dr. Paul and I had he privilege of sharing our experience of working with Nitinol and particularly FEA of Nitinol during a full day tutorial. It was an honor to have an hour to discuss the ins and outs of modeling Nitinol using FEA. You can download our […]
We rigorously evaluated the mechanisms involved in the different radial force measurement techniques and compared our results to three different stent designs. Our results continue to agree with experimental observations being generated through the hard work of of the F04.30.06 sub-committees. You can download a report where Dr. Paul and I explored modeling the radial […]
The mechanical properties of Nitinol stents are normally evaluated experimentally due to complexities resulting from large deformations and material nonlinearity. Despite difficulties associated with Finite Element Analysis (FEA), the success of computational analysis in combination with experimental study leads to better understanding of stent performance. This paper compares experimentally evaluated radial resistive forces of a […]
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