Characterizing fretting damage in different test media for cardiovascular device durability testing.

ABSTRACT: In vitro durability tests of cardiovascular devices are often used to evaluate the potential for fretting damage during clinical use. Evaluation of fretting damage is important because severe fretting can concentrate stress and lead to the loss of structural integrity. Most international standards call for the use of phosphate buffered saline (PBS) for such tests although there has been little evidence to date that the use of PBS is appropriate in terms of predicting the amount of fretting damage that would occur in vivo. In order to determine an appropriate test media for in vitro durability tests where fretting damage is being evaluated, we utilized an in vitro test that is relevant to cardiovascular devices both in terms of dimensions and materials (nitinol, cobalt-chromium, and stainle

SUBMITTER: Weaver JD 

PROVIDER: S-EPMC6374031 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature