Bioerodible magnesium alloy microstructures for endoprostheses

A bioerodible endoprosthesis includes a bioerodible magnesium alloy. The bioerodible magnesium alloy has a microstructure including equiaxed Mg-rich solid solution-phase grains having an average grain diameter of less than or equal to 5 microns and second-phase precipitates in grain boundaries betwe...

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Hauptverfasser: BOISMIER DENNIS A, STINSON JONATHAN S, TOTH LOUIS, WEBER JAN, SCHEUERMANN TORSTEN, DENG CHARLES, EDICK JACOB D
Format: Patent
Sprache:eng
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Zusammenfassung:A bioerodible endoprosthesis includes a bioerodible magnesium alloy. The bioerodible magnesium alloy has a microstructure including equiaxed Mg-rich solid solution-phase grains having an average grain diameter of less than or equal to 5 microns and second-phase precipitates in grain boundaries between the equiaxed Mg-rich solid solution-phase grains. The beta-phase precipitates have an average longest dimension of 0.5 micron or less. The microstructure can be produced by one or more equal-channel high-strain processes.