Bioabsorbable Stent Having a Radiopaque Marker
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United States of America Patent
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N/A
Issued Date -
Aug 13, 2009
app pub date -
Feb 7, 2008
filing date -
Feb 7, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A bioabsorbable stent includes one or more radiopaque markers. The stent body may include a generally cylindrical body portion and a marker support for receiving the one or more marker(s). The marker support may be connected to an end of the body portion, or may be an integral portion of the body portion. By selectively controlling dissolution of the biodegradable material of the marker support, the marker support will remain intact for a sufficient time to allow for the marker to endothelialize and therefore prevent the marker from dislodging and embolizing. The controlled dissolution may be accomplished via one or more of the following mechanisms, including increasing the cross-sectional thickness of the marker support, passivating or oxidizing the marker support, utilizing a different, slower absorbing material for the marker support, utilizing a bioabsorbable polymeric coating on the marker support, or protecting the marker support with a sacrificial anode.
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Cited Art Landscape
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