Patent ID: 8802756

Claim:
A fiber comprising a biodegradable polymer that contains a phospholipid and having an average surface porosity of less than 3%, wherein the phospholipid is one of the following: dilauroylphosphatidylcholine in an amount of 0.2 wt % to 5 wt %; dimyristoylphosphatidylcholine in an amount of 0.4 wt % to 5 wt %; dipalmitoylphosphatidylcholine in an amount of 1 wt % to 5 wt %; dioleoylphosphatidylcholine in an amount of 1 wt % to 5 wt %; and dioleoylphosphatidylethanolamine in an amount of 1 wt % to 5 wt %; or is two or more of the phospholipids in a total amount of 5 wt % or less, and in a total amount of 1 wt % or more, or contains at least dilauroylphosphatidylcholine in an amount of 0.2 wt % or more, or contains at least dimyristoylphosphatidylcholine in an amount of 0.4 wt % or more.