Biodegradable polymer for marking tissue and sealing tracts
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United States of America Patent
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Jul 5, 2011
Grant Date -
Jul 3, 2008
app pub date -
Apr 6, 2007
filing date -
May 3, 2002
priority date (Note) -
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Abstract
A tissue marker formed of a biodegradable polymer having drug-delivery capabilities is combined with a sealant that encapsulates the tissue marker and which serves to help anchor the tissue marker against migration. The sealant is delivered to a site in dehydrated form and moisture inherent in tissue at the site expands the sealant. The expanded sealant is formed of a hydrogel and is therefore more compatible to the surrounding tissue than the material of the tissue marker. The sealant and the tissue marker are both bioabsorbed over time.
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