Patent ID: 7927676
Filing Date: 2011-04-19
Classification: A61L,Y10T

Abstract:
1. A coated vaso-occlusive product comprising: a vaso-occlusive device that is an embolic coil; a polymer disposed about said vaso-occlusive device, the polymer being poly(vinylidene fluoride-co-hexafluoropropylene), a copolymer of vinylidene fluoride and hexafluoropropylene, and the ratio of vinylidene fluoride to hexafluoropropylene in the copolymer is 85:15; the polymer is in the form of an open cell foam having voids between polymer domains, the polymer foam having been exposed to helium plasma gas at between about 50 and 200 millitorr; and said polymer foam has a surface flourine composition of less than about 40% and has a surface oxygen composition of at least about 10%, while said polymer foam has a water contact angle of said polymer that has been decreased due to its having been exposed to helium plasma gas, the decreased water contact angle of said polymer being from about 35 to about 85 degrees.