Various embodiments of tracheostomy tube assemblies including a flange member having a variable volume are provided. The tracheostomy tube assemblies may include a cannula having a distal end and a proximal end. The distal end may be adapted to be inserted into a patients trachea, and the flange member may be disposed about the proximal end of the cannula. The flange member is adapted to expand to a first volume and to contract to a second volume, the first volume being greater than the second volume.
