Patent ID: 8703293

Claim:
A composition comprising a PEGylated hyaluronic acid (HA) and a PEGylated non-HA polymer, wherein the PEGylated HA and the PEGylated non-HA polymer are independently modified with poly(ethylene glycol) (PEG), PEG like molecule or a combination thereof, wherein the PEGylated HA has a weight average molecular weight in the range from about 70,000 Daltons to about 320,000 Daltons, wherein the PEGylated non-HA polymer is selected from the group consisting of poly(styrene-isoprene-styrene)-PEG (SIS-PEG), polystyrene-PEG, polyisobutylene-PEG, poly(methyl methacrylate)-PEG (PMMA-PEG), polydimethylsiloxane-co-PEG (PDMS-PEG), poly(vinylidene fluoride)-PEG (PVDF-PEG), PEGylated bioactive agents, and combinations thereof, and wherein the PEG like molecule is selected from the group consisting of polyethers, polyglycols, polyalkylene oxides, and combinations thereof.