COATED OCULAR IMPLANTS

• Main Authors: JONES, David, THAKUR, Raghu Raj Singh, SONAWANE, Rahul, WANG, Yujing, SOLIMAN, Karim
• Format: Patent
• Language: English; French; German
• Published: 27.10.2021
• Subjects: HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

The present invention relates to an ocular implant for the controlled release of a therapeutic agent or drug comprising: a) at least 0.1% w/w of a therapeutic agent; b) 5 to 95% w/w of a crosslinked polymer matrix; c) and 0.1 to 40% w/w of a biodegradable polymer selected from the group consisting of lactide/glycolide copolymer (including poly(lactide-co-glycolide) (PLGA)), poly (L-lactide) (PLA), polyhydroxyalkanoates, including polyhydroxybutyrate, polyglycolic acid (PGA), polycaprolactone (PCL), poly (DL-lactide) (PDL), poly (D-lactide), lactide/caprolactone copolymer, poly-L-lactide-co-caprolactone (PLC) and mixtures, copolymers, and block copolymers thereof; wherein the crosslinked polymer matrix is obtained by crosslinking a photopolymerizable composition selected from the group consisting of fragments or monomers of polyalkylene glycol mono-acrylate, polyalkylene glycol diacrylate, polyalkylene glycol mono-methacrylate and polyalkylene glycol dimethacrylate, and mixtures, copolymers, and block copolymers thereof, characterized in that the ocular implant is at least partially coated on its external surface with at least one coating layer selected from the group consisting of lactide/glycolide copolymer (including poly(lactide-co-glycolide) (PLGA)), poly (L-lactide) (PLA), polyhydroxyalkanoates, including polyhydroxybutyrate, polyglycolic acid (PGA), polycaprolactone (PCL), lactide/caprolactone copolymer, poly (DL-lactide) (PDL), poly (D-lactide), poly-L-lactide-co-caprolactone (PLC) and mixtures, copolymers, and block copolymers thereof; crosslinked fragments or monomers of polyalkylene glycol mono-acrylate, polyalkylene glycol diacrylate, polyalkylene glycol methacrylate and polyalkylene glycol dimethacrylate, and mixtures, copolymers, and block copolymers thereof.