Patents Assigned to Stephen A. Updegraff
  • Corneal irrigation cannula and method of using
    Patent number: 5755700
    Abstract: A corneal irrigation cannula is used in tectonic lamellar keratoplasty. The cannula is hand manipulatable and allows for entry into the interface of a corneal flap or cap and a corneal bed for the delivery for irrigating fluid under low flow through a plurality of irrigating ports thereby irrigating the interface by gently elevating the overlying cap or flap and washing residual debris from the corneal bed.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: May 26, 1998
    Assignees: Michiel S. Kritzinger, Stephen A. Updegraff
    Inventors: Michiel S. Kritzinger, Stephen A. Updegraff