Current practices in corrosion, surface characterization, and nickel leach testing of cardiovascular metallic implants

Authors

Srinidhi Nagaraja, US Food and Drug Administration
Matthew Di Prima, US Food and Drug Administration
David Saylor, US Food and Drug Administration
Erica Takai, US Food and Drug AdministrationFollow

Date of this Version

2017

Document Type

Article

Citation

Nagaraja S, Di Prima M, Saylor D, Takai E. 2017. Current practices in corrosion, surface characterization, and nickel leach testing of cardiovascular metallic implants. J Biomed Mater Res Part B 2017:105B:1330–1341.

Comments

U.S. government work.

Abstract

In an effort to better understand current test practices and improve nonclinical testing of cardiovascular metallic implants, the Food and Drug Administration (FDA) held a public workshop on Cardiovascular Metallic Implants: corrosion, surface characterization, and nickel leaching. The following topics were discussed: (1) methods used for corrosion assessments, surface characterization techniques, and nickel leach testing of metallic cardiovascular implant devices, (2) the limitations of each of these in vitro tests in predicting in vivo performance, (3) the need, utility, and circumstances when each test should be considered, and (4) the potential testing paradigms, including acceptance criteria for each test. In addition to the above topics, best practices for these various tests were discussed, and knowledge gaps were identified. Prior to the workshop, discussants had the option to provide feedback and information on issues relating to each of the topics via a voluntary preworkshop assignment. During the workshop, the pooled responses were presented and a panel of experts discussed the results. This article summarizes the proceedings of this workshop and background information provided by workshop participants.