Patent ID: 9504550
Filing Date: 2016-11-29
CPC Classification: A61B,A61F,A61L,B29C,B29K,B29L,C08J

Claim Text:
1. A medical device for promoting tissue ingrowth, the medical device comprising a solid thermoplastic body comprising: at least two porous surface layers that are on opposite faces of the solid thermoplastic body, the at least two porous surface layers comprising irregular, substantially spherical pores extending through the solid thermoplastic body for a defined distance; and a body layer that is between the at least two porous surface layers, the body layer comprising a thermoplastic with crystallites varying in size, wherein: the at least two porous surface layers comprise an increased percentage of hydroxyl groups in comparison to the body layer; a carbon to oxygen atomic ratio of the at least two porous surface layers is substantially the same as a carbon to oxygen atomic ratio of the body layer; the at least two porous surface layers have increased wettability in comparison to the body layer; and the interconnectivity of the irregular, substantially spherical pores is about 99%.