One used portex tubes blue line ultra (blu) tracheostomy tube (6.0mm uncuffed, fenes, inner cannula) was received in a plastic bag without its original packaging.Under visual inspection it was noticed that the inner cannula had a clear cut in the fenestration area.It was also noticed that there were some scratches inside the tube.The wall thickness of the inner cannula in the damaged area was measured by digital caliper and was found to be within specification (specification is > 0.4mm, measured value).
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