Patent ID: 8821583
Filing Date: 2014-09-02
Classification: A61K,A61L

Abstract:
1. A pre-stressed interpenetrating polymer network hydrogel, comprising: (a) a first non-silicone network of self-linked hydrophilic non-ionic telechelic macromonomers covalently bonded to themselves and to others through their end-groups in said first network; (b) a second non-silicone network physically entangled with said first network wherein said second network is a network of crosslinked charged polymers formed through free radical polymerization; and (c) an aqueous salt solution having a neutral pH, wherein said aqueous salt solution has charged and swollen said second network in said interpenetrating polymer network hydrogel, wherein said swelling of said second network is constrained by said first network, and wherein said swelling of said second network induces an osmotic pressure within said first network resulting in said pre-stressed interpenetrating polymer network hydrogel.