Patents by Inventor Christopher John Woosnman

Christopher John Woosnman 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).

  • Tracheostomy tube assemblies and inner cannulae
    Patent number: 10894138
    Abstract: A tracheostomy tube assembly includes an outer tube (1) and an inner cannula (2) removably inserted in the outer tube. The connector (15) on the machine end of the outer tube is rotatable through about a quarter turn and has a screw thread (30) on its inner surface. The hub (33) on the machine end of the inner cannula (2) is also formed with a screw thread (35) arranged to engage with the screw thread (30) in the connector. The inner cannula (2) is pulled into the outer tube (1), or is pushed outwardly of the tube, by rotating the connector.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 19, 2021
    Assignee: Smiths Medical International Limited
    Inventors: Timothy Bateman, Stephen James Field, Andrew Thomas Jeffrey, Christopher John Woosnman
  • Tracheostomy tube assemblies and inner cannulae
    Patent number: 10799659
    Abstract: A tracheostomy tube assembly includes an outer tube (1) and an inner cannula (2) inserted in the outer tube. Two lugs (36) and (37) project outwardly from the inner cannula. The outer tube has a connector (15) that is rotatable and has catch members (28) and (29) that can be rotated into alignment with the lugs (36) and (37) on the inner cannula so as to retain the inner cannula in the outer tube. The inner cannula is removed by twisting the connector (15) through 90° so that the catch members (28) (and 29) move out of alignment with the lugs (36) and (37) to enable the inner cannula to be pulled rearwardly out of the outer tube.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 13, 2020
    Assignee: Smiths Medical International Limited
    Inventors: Timothy Bateman, Andrew Thomas Jeffrey, Christopher John Woosnman
  • TRACHEOSTOMY TUBE ASSEMBLIES AND INNER CANNULAE
    Publication number: 20180133425
    Abstract: A tracheostomy tube assembly includes an outer tube (1) and an inner cannula (2) removably inserted in the outer tube. The connector (15) on the machine end of the outer tube is rotatable through about a quarter turn and has a screw thread (30) on its inner surface. The hub (33) on the machine end of the inner cannula (2) is also formed with a screw thread (35) arranged to engage with the screw thread (30) in the connector. The inner cannula (2) is pulled into the outer tube (1), or is pushed outwardly of the tube, by rotating the connector.
    Type: Application
    Filed: May 27, 2016
    Publication date: May 17, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy Bateman, Steven James Field, Andrew Thomas Jeffrey, Christopher John Woosnman
  • TRACHEOSTOMY TUBE ASSEMBLIES AND INNER CANNULAE
    Publication number: 20180133423
    Abstract: A tracheostomy tube assembly includes an outer tube (1) and an inner cannula (2) inserted in the outer tube. Two lugs (36) and (37) project outwardly from the inner cannula. The outer tube has a connector (15) that is rotatable and has catch members (28) and (29) that can be rotated into alignment with the lugs (36) and (37) on the inner cannula so as to retain the inner cannula in the outer tube. The inner cannula is removed by twisting the connector (15) through 90° so that the catch members (28) (and 29) move out of alignment with the lugs (36) and (37) to enable the inner cannula to be pulled rearwardly out of the outer tube.
    Type: Application
    Filed: May 27, 2016
    Publication date: May 17, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy Bateman, Andrew Thomas Jeffrey, Christopher John Woosnman