Composite self expanding stent device having a restraining element
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United States of America Patent
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-
Jan 30, 2001
Grant Date -
N/A
app pub date -
Oct 14, 1998
filing date -
Oct 22, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A composite stent device comprises a shape memory alloy stent sleeve which is treated so that it can exert an outward force on a lumen in which the stent device is to be deployed, and a restraint element which restricts the maximum transverse dimension to which the stent sleeve can expand outwardly. The restraint sleeve can minimize damage to a lumen by a stent located within it. It can be arranged to allow the stent device to be deformed in a bending mode, for example when the lumen in which the device is located is subjected to a transverse flattening deformation, relying on the enhanced elastic properties of the shape memory alloy stent sleeve to recover to the open, generally rounded configuration.
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