×

OCULAR INSERT

  • US 3,618,604 A
  • Filed: 06/09/1969
  • Issued: 11/09/1971
  • Est. Priority Date: 06/09/1969
  • Status: Expired due to Term
First Claim
Patent Images

1. A medication-dispensing tablet for a human eyeball, said tablet comprising a reservoir of drug formulation confined within a flexible, imperforate and continuous-surfaced body of nonallergenic polymeric material which is insoluble in tear liquid, said body being formed of a drug-release rate-controlling polymer to continuously meter the flow of drug by diffusion from the reservoir to the eye at a controlled, predetermined and reproducible rate over a prolonged period of time, said body being adapted for insertion into the cul-de-sac of the conjunctiva between the sclera of the eyeball and eyelid, to be held in place against the eyeball by the pressure of the lid, and said body having a marginal outline and cross section adapted to assume essentially the configuration of the scleral curvature;

  • said drug being capable of transport through the unbroken walls of said body by diffusion and said body being so constructed and arranged that, when applied to the eyeball, to dispense said drug thereto, drug leaving said body by diffusion is transported to the eyeball by the flow of tears and by the blinking action of the eyelids.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×