Ocular drug delivery device
Patent 4014335 Issued on March 29, 1977. Estimated Expiration Date: 
March 29, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 29, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3641237 3699963 3710795 Bioerodible ocular device Ocular drug dispensing system Drug delivery device Dosage form Patent #: 3972995 InventorApplicationNo. 05/670267 filed on 03/25/1976US Classes:424/427, Ocular604/294Means for treating eye or surface of ocular cavityExaminersPrimary: Medbery, Aldrich F.Attorney, Agent or FirmAbstractAn ocular drug dispensing device for administering a drug at a controlled and continuous dosage unit rate to the eye to produce a local or systemic physiological or pharmacological effect is comprised of a shaped body insoluble in tear fluid and comprised of a first wall, a third wall distant from the first wall, a second wall interposed between the first and third wall and extending around their peripheries for sealingly engaging the first and third wall, a reservoir defined by the inner surfaces of the walls and containing the drug or a mixture of the drug in a carrier and wherein at least one of the first and third walls is formed of an imperforate drug release rate controlling material permeable to the passage of drug or a microporous material containing in the micropores a drug release rate controlling medium permeable to the passage of drug for administering a therapeutically effective amount of drug over a prolonged period of time. | |
