Patents by Inventor Stephan Gaspar

Stephan Gaspar 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).

  • Eye surgery methods
    Patent number: 5167620
    Abstract: Collapse of the cornea into the cavity formed when material such as the lens is removed from an eye in the irrigation-aspiration method is minimized by incorporating a pressure responsive, variable flow resistance element in the aspiration line of the irrigation-aspiration apparatus. A preferred pressure responsive, variable resistance element is a length of thin walled tubing which is easily collapsed to smaller flow path area in response to increasing negative pressure in the aspiration line.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: December 1, 1992
    Assignee: Alexandar Ureche
    Inventors: Alexander Ureche, Stephan Gaspar
  • Eye surgery apparatus with vacuum surge suppressor
    Patent number: 5106367
    Abstract: Collapse of the cornea into the cavity formed when material such as the lens is removed from an eye in the irrigation-aspiration method is minimized by incorporating a pressure responsive, variable flow resistance element in the aspiration line of the irrigation-aspiration apparatus. A preferred pressure responsive, variable resistance element is a length of thin walled tubing which is easily collapsed to smaller flow path area in response to increasing negative pressure in the aspiration line.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: April 21, 1992
    Assignee: Alexander Ureche
    Inventors: Alexander Ureche, Stephan Gaspar