Patents by Inventor Michael S. Kritzinger

Michael S. Kritzinger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Corneal aspiration cannula and method of using
    Patent number: 5984913
    Abstract: An aspiration cannula is used in tectonic lamellar keratoplasty. The cannula is hand manipulatable and aspirates irrigation fluid and repositions a corneal cap or flap during corneal surgery. The cannula comprises a hand manipulatable elongated tube having an inlet end with a plurality of ports spaced apart along the length of the tube for aspirating irrigation fluid around a corneal incision interface and an outlet end for disposing the fluid.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: November 16, 1999
    Assignee: Michiel S. Kritzinger
    Inventors: Michael S. Kritzinger, Stephen A. Updegraff
  • Corneal irrigation cannula
    Patent number: 5800406
    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: May 31, 1996
    Date of Patent: September 1, 1998
    Inventors: Michael S. Kritzinger, Stephen A. Updegraff