Bioerodible magnesium alloy microstructures for endoprostheses
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United States of America Patent
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Mar 28, 2017
Grant Date -
Aug 21, 2014
app pub date -
Feb 12, 2014
filing date -
Feb 15, 2013
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Abstract
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.
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