(b)(4).Method: the complaint opt316 optiflow junior nasal cannula was returned to fph in (b)(4) and was visually inspected.Results: visual inspection revealed one of the tubes was detached from the swivel grip, confirming the reported fault.Conclusion: the observed damage was most likely the result of pulling on the tube with undue force.All optiflow junior cannulae are 100% leak and occlusion tested after final assembly and any cannula that fails is discarded.In addition, samples are taken hourly from each run and pull tested to check glue joint strength at the cannula/tube joint, as well as the swivel grip joint.If there are any failures the entire batch is put aside for further investigation.The user instructions illustrate in pictorial format the correct set-up and proper use of the optiflow junior nasal cannula.They also state the following: - "ensure that all connections are secure during use.Check cannula is undamaged and that the flow path is maintained." - "appropriate patient monitoring must be used at all times.Failure to monitor the patient may result in loss of therapy, serious injury or death." - "do not stretch or crush tube." as part of our ongoing product improvement initiatives, fph implemented additional testing and checking on the optiflow junior production line to further ensure that all product leaving the line meets specification.
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