Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
Recently, there has been increase in demand for the biodegradable stent from the medical field. However, the ductility for expansion or the strength to sustain the tubular tissue of pure magnesium is not sufficient. Therefore this research aimed to develop the biodegradable magnesium alloy with combination of improved ductility and sufficient strength. The microstructure of magnesium ingot alloyed with Zinc and Calcium was improved by hot extrusion. To confirm the applicability of the developed ternary alloy to the stent, finite element analysis for expansion of the stent and the sustainability was conducted. The stent model was successfully expanded and the expansive force was enough to maintain the diameter. This result means that Mg-Zn-Ca alloy possessed excellent strength-ductility balance for the biodegradable stent.
