A recently conducted hydrophilic coating friction test shows how non-standardized test methods can be created to address specific cardiovascular device questions and issues.
Several well known in-vitro test methods, such as Trackability, are used to assess the functional performance of interventional devices during simulated use. Trackability is a direct proximal measurement of the force required to advance a device in a tortuous anatomical path.
Our engineers used their knowledge of equipment handling, instrumentation, setup, traceability, documentation, calibration and qualification to develop a non-standardized test method to assess the performance of interventional medical devices in a simulated environment. The results provide valuable input to R&D engineers during the development process.
The key benefit of this study is to provide a comparison between groups of samples (for example, to test several coatings or compare samples to a reference device).
No standard exists for this test. It has been created based on a technical paper.
The results given by this study have no real physiological representation, because neither the pinch force/distance nor the material of friction are physiological. During the design process for interventional devices, many parameters and choices can affect the functional performance of the final product and in the end may provide a competitive edge against similar devices on the market.
 Biocoat Technical White Paper: “Effect of Testing Parameters on Pinch Test Results for Hydrophilic Coatings” by J. Li, J. Simon, W. Work, 2012.
About ViVitro Labs
ViVitro Labs Inc., Canada, offers industry-leading cardiovascular test equipment and related laboratory testing and consulting services. Hundreds of organizations in over 39 countries for 35 years have trusted ViVitro expertise, accuracy, and quality for their heart valve, LVAD, TAH, stent, and graft testing. ViVitro Laboratory Services holds ISO/IEC 17025 accreditation based on ISO 5840. ViVitro Labs products are manufactured by StarFish Medical in Victoria, Canada. (see our ISO 17925 scope of accreditation for Marseille, France and Victoria, Canada).
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