Exploring Equivalency in Biocompatibility

In this episode of NAMSA’s BiocompCHATibility podcast, we welcome back Dr. Phil Smiraldo (Principal Toxicologist, NAMSA) for his third appearance as an honorary host. The discussion centers on the complexities of equivalency in biocompatibility, examining how equivalency can range from simple to complex and how a predicate device does not always equal equivalency.

Listen in as we explore these topics with Dr. Smiraldo and gain insights into the intricate world of biocompatibility and the challenges faced when trying to establish equivalence between medical devices.

“The world of equivalency runs the spectrum from incredibly simple to probably way too complex.” – Don Pohl

“When we do these types of extractions on, we’ll say prior devices and change to device, we’re going to have variability within our experiments.” – Phil Smiraldo

“You know whether you call it an equivalency assessment or change control assessment. Whatever you want to call it, I mean [10993] part one tells us if there’s a change, you have to evaluate it.” – Don Pohl

“I guess long story short, you could theoretically go through this whole exercise and end up with the two devices that are equivalent from a systemic toxicity perspective and that’s it.” – Phil Smiraldo

Key Discussion Points:

• Importance of confirming identical materials of construction, device categorization, and the IFU to ensure that the device remains equivalent
• The detailed process required to establish proof of equivalence
• The critical role of adhering to standards in biocompatibility assessments

*Please note that the opinions discussed throughout the podcast are their own and do not reflect that of their current or former employers.

Meet the Speakers

Phillip Smiraldo, PhD, DABT; Senior Toxicologist, NAMSA

Phillip holds a PhD in Molecular and Cellular Biology from the University of Toledo Medical Center (formerly Medical College of Ohio) and a BS in Biology from Bowling Green State University (summa cum laude; with minors in Chemistry and Italian Language). He was a Postdoctoral Fellow at the University of Texas Southwestern Medical Center (awarded two grants to support his research), authored several articles that were published in peer-reviewed journals (regarding his research of DNA repair in mammalian cells), and authored a book chapter appearing in Telomerases: Chemistry, Biology, and Clinical Applications, and has provided several oral presentations. Dr. Smiraldo’s timeless experience in the medical device industry encompasses toxicology, biological safety and preclinical study design, as well as extensive preparation of biological and toxicological risk assessments for submission in countries complying with EU and US FDA regulations. Prior to his current position as Toxicologist, he was a Medical Research Scientist and Study Director (NAMSA), overseeing special/custom preclinical functional studies, preclinical safety studies and simulated-use chemistry studies.  Before joining NAMSA, Dr. Smiraldo was a Staff Toxicologist at WIL Research (approximately 2.5 years), where he was a Study Director of preclinical safety studies for pharmaceutical- and chemical-based products.

Sheri Krajewski; Product Marketing Manager – Biological Safety, NAMSA

Sheri joined NAMSA in 2003 and currently serves as Global Product Marketing Manager of Biological Safety. She has supported customers in a variety of commercial operations and management roles, and was an integral leader in the development of NAMSA’s biological safety consulting business. Additionally, Sheri created the much sought-after NAMSA Training Series for the biological evaluation of medical devices. Prior to NAMSA, Sheri was the marketing lead for a mechanical fatigue laboratory and consulting business where she worked primarily with cardiovascular implant manufacturers. Sheri holds a Bachelor’s Degree from the University of Nebraska.

Don Pohl; Principal Product Development Strategist, NAMSA

Don has over 25 years of experience in the preclinical evaluation of medical devices for biological safety. During his career, he has held a variety of positions ranging from laboratory supervision/management, GLP Study Director, Technical Specialist for Laboratory Information Management System, Technical Specialist and Project Manager for Biological Safety and Biological Risk Assessment consultation. He has specific expertise in the evaluation process outlined in ISO 10993-1, as well as the expectations of the U.S. FDA and other global regulatory bodies in their interpretation of the biological safety evaluation of medical devices. Don holds a Bachelor’s degree from Ohio State University.