|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Assessment of Extruded Magnesium Tubing for Absorbable Stent Production
||Adam Griebel, Gregory Hayes, Robert Werkhoven, Roman Menze, Jeremy Schaffer
|On-Site Speaker (Planned)
Stents are tubular medical devices used to provide internal support to lumens throughout the cardiovascular, respiratory, gastrointestinal, and urinary systems. Stents composed of absorbable metals like magnesium can provide temporary structural support and then be absorbed into the body, allowing the vessel to return to a natural state. Manufacturing of high-quality magnesium alloy stents is non-trivial, and care must be taken through the entire process from ingot melting to laser cutting. The aim of this study was to demonstrate a viable manufacturing path for such stents. Specifically, bars of two alloys (ZX10 and LZ21) were produced by Fort Wayne Metals, extruded into fine-grained tubing through a unique extrusion process at Complex Materials, and laser machined and electropolished at MeKo. The microstructural and mechanical behavior of the resultant stents was assessed and compared to a reference WE43 material. Future work will include coating application and degradation assessments.
||Magnesium, Process Technology, Biomaterials