Patents by Inventor Christopher S. Turnbull

Christopher S. Turnbull 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 cuff pressure monitor
    Patent number: 5218970
    Abstract: A monitor for measuring the pressure in the cuff on a tracheal tube is clipped onto a coupling at the end of an inflation indicator balloon that communicates with the cuff. The monitor has a silicon strain gauge pressure sensor and a spring that urges the sensor resiliently against one side of the balloon, the other side of the balloon resting on a base plate. The monitor has a numeric display connected to the sensor on which a representation of pressure in the indicator balloon and hence in the cuff is displayed.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: June 15, 1993
    Assignee: Smiths Industries Public Limited Company
    Inventors: Christopher S. Turnbull, Brian Crawley
  • Medico-surgical tube with sealing cuff and a suction lumen at the top of the cuff
    Patent number: 5201310
    Abstract: A cuffed tracheal tube has a suction lumen extending along the tube and opening through a suction aperture immediately adjacent the upper, proximal end of the cuff. The inflatable cuff is attached to the external surface of the tube by collars. The proximal collar is everted within the inflatable portion of the cuff so that it does not extend beyond the inflatable portion and so that the maximum amount of secretions can be removed through the suction aperture.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: April 13, 1993
    Assignee: Smiths Industries Public Limited Company
    Inventor: Christopher S. Turnbull
  • Tracheal tube assemblies and liners
    Patent number: 5184611
    Abstract: A tracheostomy tube assembly has a right-angle swivel connector connected to the machine end of a tracheostomy tube within which extends a liner. A fitment at the machine end of the liner has two annular collars between which several apertures open into the fitment. If the liner should be displaced rearwardly in the connector and the machine end of the liner becomes blocked, gas can flow through the apertures.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: February 9, 1993
    Assignee: Smiths Industries Public Limited Company
    Inventor: Christopher S. Turnbull