Ocular drug delivery device
First Claim
1. An ocular device for the administration of drug comprising a three layered laminate having a pair of separate and discrete first and third walls formed of a material insoluble in tear fluid with one of the walls formed of a drug release rate controlling material permeable to the passage of drug and the other wall formed of a material impermeable to the passage of drug, a second wall interposed between the first and third walls and formed with an inwardly disposed hole with the second wall sealingly engaging the first and third walls to form a reservoir containing a drug selected from the group consisting of antibiotic, antibacterial, antiviral, antiallergenic, anti-inflammatory, miotic, anticholinesterase, mydriatic and sympathomimetic drugs, and wherein drug is administered from the device at a controlled and continuous rate by passage through the rate controlling wall over a prolonged period of time.
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Accused Products
Abstract
An 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.
516 Citations
27 Claims
- 1. An ocular device for the administration of drug comprising a three layered laminate having a pair of separate and discrete first and third walls formed of a material insoluble in tear fluid with one of the walls formed of a drug release rate controlling material permeable to the passage of drug and the other wall formed of a material impermeable to the passage of drug, a second wall interposed between the first and third walls and formed with an inwardly disposed hole with the second wall sealingly engaging the first and third walls to form a reservoir containing a drug selected from the group consisting of antibiotic, antibacterial, antiviral, antiallergenic, anti-inflammatory, miotic, anticholinesterase, mydriatic and sympathomimetic drugs, and wherein drug is administered from the device at a controlled and continuous rate by passage through the rate controlling wall over a prolonged period of time.
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13. An ocular device for the administration of an ophthalmic drug comprising a three layered laminate having a pair of separate and discrete first and third walls formed of a material insoluble in tear fluid with one of the walls formed of a drug release rate controlling material permeable to the passage of drug and the other wall formed of a material impermeable to the passage of drug, a second wall interposed between the first and third walls and formed with an inwardly disposed hole with the second wall sealingly engaging the first and third walls to form a reservoir containing a drug selected from the group of ophthalmic drugs consisting of pilocarpine, pilocarpine and its acceptable salts, eserine salicylate, carbachol, eserine, phospholine iodide, demecarium bromide, cyclopentolate, homatropine, scopolamine, atropine, atropine sulfate, eucatropine, and tropicamide.
- 14. An ocular device for the administration of drug comprising a three layered laminate having a pair of separate and discrete first and third walls formed of a material insoluble in tear fluid with one of the walls formed of a microporous material, the pores of which contain a drug release rate controlling medium permeable to the passage of drug and the other wall formed of a material impermeable to the passage of drug, a second wall positioned between the first and third walls and formed with an inwardly disposed hole with the second wall sealingly engaging the first and third walls to form a reservoir containing a drug selected from the group consisting of antibiotic, antibacterial, antiviral, antiallergenic, anti-inflammatory, miotic, anticholinesterase, mydriatic and sympathomimetic drugs, and wherein drug is administered from the device at a controlled and continuous rate by passage through the rate controlling medium over a prolonged period of time.
- 17. An ocular delivery device for the continuous administration of drug over a prolonged period of time comprising a sealed container shaped for insertion and placement in the eye, said container comprising a pair of first and third membrane walls spaced from each other, each formed of a material insoluble in ocular fluid with one of the membrane walls formed of a material permeable to the passage of ocular drug and the other membrane wall formed of a material substantially impermeable to the passage of drug, a second peripheral shaped wall interposed between and sealingly engaging the first and third membrane walls along their outer faced peripheries to define an integral unit and form a reservoir defined by the inner surface of the first, second and third walls, said reservoir containing ocular drug selected from the group consisting of locally and systemically acting drugs which are released therefrom at a controlled and continuous rate by passage through the release rate controlling membrane wall over a prolonged period of time.
- 25. An ocular delivery device for the continuous administration of drug comprising a closed container shaped and sized for insertion and placement in the eye, said container comprising a pair of first and third walls spaced from each other, each formed of a material insoluble in ocular fluid with one of the walls formed of a microporous polymeric material capable of housing in its pores a drug release rate controlling medium permeable to the passage of drug and the other wall formed of a material substantially impermeable to the passage of drug, a second peripheral shaped wall positioned between and sealingly engaging the first and third walls along their marginal faced peripheries to define an integral unit and form a reservoir defined by the inner surface of the first, second and third walls, said reservoir containing an ocular drug selected from the group of drugs that give physiologic and pharmacologic beneficial effects, which is released from the device at a controlled and continuous rate by passage through the release rate controlling medium housed in the pores over a prolonged period of time.
Specification