Foam-type vascular prosthesis with well-defined angio-permissive open porosity
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United States of America Patent
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Sep 9, 2003
Grant Date -
May 31, 2001
app pub date -
Jan 9, 2001
filing date -
Jul 20, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vascular prosthesis is constructed from a well-defined pore structure to allow uninterrupted ingrowth of connective tissue into a wall of the prosthesis. Several different methods can be used to produce the prosthesis, including a vacuum impregnation technique, a paste molding technique, a paste extrusion technique, a dip coating technique, and a melt extrusion technique. Furthermore, mechanical properties of the prosthesis are matched with mechanical properties of the host vessel, thereby overcoming problems of compliance mismatch.
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