Veterinary ocular ring device for sustained drug release
First Claim
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1. A method for releasing over a prolonged period of time a therapeutic agent into the region of an eye of an animal comprising inserting into the conjunctival sac of said eye a substantially ring-shaped device releasably containing said therapeutic agent, and releasing said agent into said eye region over a prolonged period.
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Abstract
A novel ring-shaped device inserted into the conjunctival sac of an animal eye exhibits potential for prolonged release of therapeutic drugs to the eye region. Its prolonged retention properties render it suitable for use in the extended treatment of obstinate ocular infections, such as infectious bovine keratoconjunctivitis in cattle.
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Citations
16 Claims
- 1. A method for releasing over a prolonged period of time a therapeutic agent into the region of an eye of an animal comprising inserting into the conjunctival sac of said eye a substantially ring-shaped device releasably containing said therapeutic agent, and releasing said agent into said eye region over a prolonged period.
- 8. An apparatus adapted for insertion into the conjunctival sac of the eye of an animal surrounding the globe of said eye comprising a ring-shaped member having means associated therewith for the prolonged release of a therapeutic agent into the region of said eye.
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12. A method for releasing over a prolonged period of time a therapeutic agent into the region of an eye of an animal having an eye structure inclusive of a nictitating membrane, comprising inserting into the conjunctival sac of said eye, surrounding the globe of said eye, and positioning onto the outer surface of said nictitating membrane a substantially ring-shaped device releasably containing said therapeutic agent, and releasing said agent into said eye region over a prolonged period.
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13. An apparatus adapted for insertion into the conjunctival sac of the eye of an animal and further adapted for surrounding the globe of said eye and for positioning onto the outer surface of the nictitating membrane comprising a ring-shaped member having means associated therewith for the prolonged release of a therapeutic agent into the region of said eye.
- 14. In a non-corneal, drug dispensing ocular insert comprising a flexible body containing a drug for application to the eyeball to dispense said drug to the eye over a prolonged period of time, the improvement comprising a means for permitting facile insertion into and comfortable retention within the eye, and concomitantly preventing the expulsion of the insert therefrom, wherein said flexible body comprises an annular ring that is sized relative to the eye so it can be placed about the eyeball and in contact therewith, completely posterior to the sulcus sclerae and within the upper and lower cul-de-sacs, the width of the ring being such that the ring is virtually invisible in the palpebral fissure when the eyelids are open.
Specification