Stent made of nitinol having improved axial bending stiffness and associated production method
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United States of America Patent
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Apr 17, 2012
Grant Date -
Apr 30, 2009
app pub date -
Oct 22, 2008
filing date -
Oct 24, 2007
priority date (Note) -
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Abstract
A stent made of nitinol having improved axial or radial stiffness, the stent having a support structure which comprises peripheral struts around the circumference, wherein the peripheral struts are linked to one another in the axial direction via connection struts. The support structure may assume a first compressed state and a second expanded state. The nitinol is in the support structure in a martensitic microstructure in the compressed state and largely in an austenitic microstructure in the second expanded state. One or more support structure sections, however, are entirely or partially in a martensitic microstructure in the second expanded state.
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