Patents by Inventor Michael R. Millar

Michael R. Millar 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).

  • Tracheal tube assemblies
    Patent number: 5386826
    Abstract: A tracheal tube assembly comprises an outer tube and an inner cannula that is insertable within and removable from the outer tube. The inner cannula has an inner surface of a flexible plastic material such as PVC to which respiratory secretions cling. The outer surface of the cannula is of a material having a lower friction than the inner surface and may be a helical filament or a continuous layer. The machine end of the inner cannula projects beyond the outer tube to form a flexible portion which is terminated with a coupling.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: February 7, 1995
    Assignees: Smiths Industries Public Limited Company, University of Leeds Industrial Services Limited
    Inventors: Timothy J. J. Inglis, Michael R. Millar
  • Tracheal assembly having inner and outer tubes and surface materials
    Patent number: 5119811
    Abstract: A tracheal tube assembly has an outer tube and an inner cannula with a patient end that is flared outwardly to a diameter greater than the internal diameter of the outer tube. When inserted in the outer tube, the patient end of the inner cannula is deformed inwardly and forms a wiping seal. The remainder of the inner cannula has an external diameter less than the internal diameter of the outer tube so that it is readily inserted. The inner cannula may be coextruded with an outer layer of a low friction material such as a polyolefine.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: June 9, 1992
    Assignee: Smiths Industries Public Limited Company
    Inventors: Timothy J. J. Inglis, Michael R. Millar