NON-WOVEN MAT AND METHOD OF PRODUCING SAME
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United States of America Patent
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Issued Date -
Apr 11, 2013
app pub date -
Oct 23, 2012
filing date -
Jun 19, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A mat having a highly uniform porosity distribution is produced by consolidating 15 or more layers of melt blown webs (or the like) having different orientations. Control over the porosity is provided by using webs that exhibit a narrow, unimodal distribution of fiber diameters over the bulk of its distribution, such as in the top 80%. A compliance of the mats can be chosen by selecting a number and orientation of the webs. It is thus possible to produce mats that are good candidates for vascular grafts, for example. The uniformity of the porosity within the range of 6 μm to 30 μm permits seeding of the vascular graft with endothelial and smooth muscle cells. The mats have the demonstrated ability to retain, and support growth of, smooth muscle cells and endothelial cells.
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