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公开(公告)号：US20140236284A1
公开(公告)日：2014-08-21
申请号：US14178869
申请日：2014-02-12
Applicant: Boston Scientific Scimed, Inc.
Inventor： Jonathan S. Stinson , Dennis A. Boismier , Jacob Drew Edick , Torsten Scheuermann , Louis Toth , Jan Webber , Charles Deng
CPC classification number: A61F2/82 , A61L31/022 , A61L31/14 , A61L31/148 , C22C23/02 , C22F1/06
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.
Abstract translation: 生物腐蚀性内置假体包括生物腐蚀性镁合金。 生物腐蚀性镁合金具有包含平均粒径小于或等于5微米的等轴Mg富集固相晶粒的微观组织，并且在等轴富Mg固相晶粒之间的晶界中的第二相析出。 β相析出物的平均最长尺寸为0.5微米或更小。 微结构可通过一个或多个等通道高应变过程产生。
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公开(公告)号：US09603728B2
公开(公告)日：2017-03-28
申请号：US14178869
申请日：2014-02-12
Applicant: Boston Scientific Scimed, Inc.
Inventor： Jonathan S. Stinson , Dennis A. Boismier , Jacob Drew Edick , Torsten Scheuermann , Louis Toth , Jan Webber , Charles Deng
CPC classification number: A61F2/82 , A61L31/022 , A61L31/14 , A61L31/148 , C22C23/02 , C22F1/06
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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