Medico-surgical tube assemblies
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 handle ( 55 ) of the lever ( 50 ) is inclined out of the plane of the locking assembly ( 25 ) it can be slid freely along the tracheostomy tube ( 1 ) for positioning. The locking assembly ( 25 ) is locked in position by rotating the handle ( 55 ) down to lie in the plane of the locking assembly. The flange ( 20 ) has two wings ( 22 ) and ( 23 ) connected with a central plate ( 20 ) by webs ( 42 ) and ( 43 ) of reduced width so that the webs flex to allow the wings to be lifted readily.
1. A medico-surgical tube assembly including a tube and a locking assembly movable along a part at least of the length of the tube and lockable in position along the tube, the locking assembly extending in a plane laterally about the tube, characterized in that the locking assembly includes a manually-operable lever having a stem and an elongate handle portion projecting laterally outwardly of the stem, that the handle portion is movable between a first, unlocked position to a second, locked position so as to rotate the stem and tighten the locking assembly about the tube, and that the handle portion projects at an angle from the plane of the locking assembly in the first, unlocked position and lies substantially parallel with the plane of the locking assembly in the second, locked position.
2. A medico-surgical tube assembly according to claim 1 , in that the lever is arranged to clamp two parts of the locking assembly together against opposite sides of the tube when the locking assembly is locked.
3. A medico-surgical tube assembly according to claim 2 , characterized in that the two parts of the locking assembly have a plurality of deformable rings adapted to engage the outside surface of the tube.
4. A medico-surgical tube assembly according to claim 1 , characterized in that the two parts of the locking assembly are of C shape and are connected together by a living hinge.
5. A medico-surgical tube assembly according to claim 1 , characterized in that the stem has a threaded portion engaging a threaded aperture in one part of the locking assembly such that when the stem is rotated by moving the handle portion the two parts of the locking assembly are moved together.
6. A medico-surgical tube assembly according to claim 1 , characterized in that the lever and the locking assembly have cooperating detents to retain the lever in the locked position.
7. A medico-surgical tube assembly according to claim 1 , characterized in that the locking assembly includes a flange by which the tube is secured with the neck of the patient, that the flange has a central section and two wing sections attached integrally with the central section by respective webs, and that the webs have a reduced width compared with the central section and the wing sections so that the webs flex to allow the wing sections to be pulled forwardly for access to the region under the flange.
8. A medico-surgical tube assembly according to claim 1 , characterized in that the tube is a tracheostomy tube.