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US 8,298,584 B2Granted
Biopolymeric membrane for wound protection and repair
AssigneeCollagen Matrix, Inc.
InventorsShu-Tung Li, Natsuyo Shishido Lee, Debbie Yuen
Life of this patent
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Abstract
The present invention relates to a conformable and semi-permeable biopolymeric membrane suitable for tissue repair and protection. This membrane contains a first layer made from randomly oriented, reconstituted biopolymer fibers and, on top of the first layer, a coating layer made from biopolymer fibers.
Claims14
A biocompatible membrane for tissue repair, comprising:
- a first layer including randomly oriented fibers of a first biopolymer, the fibers of the first biopolymer having a fiber length ranging from 2.5 cm to 50 cm, and
- a second layer on top of a surface of the first layer, the second layer including fibers of a second biopolymer, the fibers of the second biopolymer having a fiber length ranging from 0.1-1.0 mm,
- wherein said biocompatible membrane has a thickness of 0.1 mm to 3.0 mm, a density of 0.04 to 0.60 g/cm3, a hydrothermal shrinkage temperature of 48-72° C., a draping angle of 30 to 90 degrees, and is permeable to molecules with a molecular weight of less than 100,000 daltons.
Dependencies are inferred from the claim text.