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Apparatus for introducing ionized drugs into the posterior segment of the eye and method

  • US 4,564,016 A
  • Filed: 08/13/1984
  • Issued: 01/14/1986
  • Est. Priority Date: 05/24/1982
  • Status: Expired due to Fees
First Claim
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1. In an apparatus for introducing an ionized drug into the eye, a cup-shaped member formed of an insulating material and having an outwardly extending annular lip adapted to be placed in contact with the exterior scleral surface of the eye, said member having a nipple formed integral therewith disposed within the confines of the annular lip and having its outer extremity lying generally in the same plane as the plane of the annular lip, said annular lip and said nipple being adapted to come in contact with the eye and to form a liquid-tight seal therewith, said member having a passageway therein extending through the nipple with a cross-sectional area of less than approximately one millimeter in diameter, an ionized drug solution filling said passageway and electrical power supply means remote from the member and coupled to said passageway for causing a current flow of at least 50 milliamperes per square centimeter through the drug solution to establish a high current density in the eye in the vicinity of the portion of the eye in contact with the ionized drug solution in said passageway whereby the drug is carried from the passageway into the eye.

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