An adjustable flange for a tracheostomy tube has a locking assembly (25) with two C shape clamp arms (26) and (27) hinged together at one end (28). A lever (50) with a threaded stem (51) extends through the opposite end of one arm (27) and into a threaded aperture (32) in the other arm (26). When the...http://www.google.es/patents/US8104476?utm_source=gb-gplus-sharePatente US8104476 - Medico-surgical tube assemblies
