Smiths Medical International Limited

Christopher John Woosnman

Timothy Bateman

Andrew Thomas Jeffrey

Stephen James Field

A tracheostomy tube assembly includes an outer tube () and an inner cannula () removably inserted in the outer tube. The connector () on the machine end of the outer tube is rotatable through about a quarter turn and has a screw thread () on its inner surface. The hub () on the machine end of the inner cannula () is also formed with a screw thread () arranged to engage with the screw thread () in the connector. The inner cannula () is pulled into the outer tube (), or is pushed outwardly of the tube, by rotating the connector.

Tracheostomy tube assemblies and inner cannulae

A tracheostomy tube assembly includes an outer tube () and an inner cannula () inserted in the outer tube. Two lugs () and () project outwardly from the inner cannula. The outer tube has a connector () that is rotatable and has catch members () and () that can be rotated into alignment with the lugs () and () on the inner cannula so as to retain the inner cannula in the outer tube. The inner cannula is removed by twisting the connector () through 90&#xb0; so that the catch members () (and) move out of alignment with the lugs () and () to enable the inner cannula to be pulled rearwardly out of the outer tube.

Growing community of inventors

Great Sutton, United Kingdom

Christopher John Woosnman