Patents by Inventor Thomas L. Dufalla

Thomas L. Dufalla 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).

  • Plunger systems
    Patent number: 6984222
    Abstract: The plunger systems for use in an injector-actuated syringe of the present invention include a dynamic wedge seal which improves the sealing engagement between the plunger cover and syringe barrel, and flexible capture members extending from the rear surface of the plunger which permit the engagement and disengagement of the plunger from the injector drive means at any plunger position within the syringe. Further, the plunger systems include a contrast saving tip which expells the injection liquid from the syringe tip.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: January 10, 2006
    Assignee: Medrad, Inc.
    Inventors: Mark W. Hitchins, Edward J. Rhinehart, David M. Reilly, Anthony S. McCoppin, Thomas L. Dufalla, Robert J. Masarik
  • Plunger systems
    Patent number: 6017330
    Abstract: The plunger systems for use in an injector-actuated syringe of the present invention include a dynamic wedge seal which improves the sealing engagement between the plunger cover and syringe barrel, and flexible capture members extending from the rear surface of the plunger which permit the engagement and disengagement of the plunger from the injector drive means at any plunger position within the syringe. Further, the plunger systems include a contrast saving tip which expells the injection liquid from the syringe tip.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: January 25, 2000
    Assignee: Medrad, Inc.
    Inventors: Mark W. Hitchins, Edward J. Rhinehart, David M. Reilly, Anthony S. McCoppin, Thomas L. Dufalla, Robert J. Masarik