Oriented biopolymeric membrane for meningeal tissue repair
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United States of America Patent
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May 20, 2008
Grant Date -
Jan 1, 2004
app pub date -
Jun 30, 2003
filing date -
Apr 14, 1999
priority date (Note) -
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Abstract
A cell occlusion sheet membrane adapted for repairing a damaged meningeal tissue. The sheet membrane contains a layer of cross-linked, oriented biopolymeric fibers that has a thickness of 0.1 mm to 3.0 mm, a density of 0.1 g/cm.sup.3 to 1.2 g/cm.sup.3, a hydrothermal shrinkage temperature of 45.degree. C. to 80.degree. C., a suture pullout strength of 0.1 kg to 5 kg, a tensile strength of 10 kg/cm.sup.2 to 150 kg/cm.sup.2, and permeability to molecules having molecular weights of 200 to 300,000 daltons. Also disclosed is a method for making the membrane.
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