(b)(4).Method: the complaint ojr410 optiflow junior 2 nasal cannula was not returned to fisher & paykel healthcare (f&p) in new zealand for evaluation.Our investigation is based on the information and photography provided by the customer and our knowledge of our product.Results: visual inspection of the photograph provided by the customer showed that one of the tubes of the ojr410 optiflow junior 2 nasal cannula was detached from the cannula joint.Glue residue was observed on the surface of the detached tube-end.Conclusion: we are unable to determine the cause of the reported event.However, it is most likely caused by the tubing being pulled.All optiflow junior cannulas are 100% leak and occlusion tested after final assembly and any cannula that fails is discarded.Samples are also taken and pull tested to check the tube tensile strength and the glue joint strength at the cannula/tube joint, as well as the swivel grip joint.The subject cannula would have met the required specification at time of production.The user instructions illustrate in pictorial format the correct set-up and proper use of the optiflow junior 2 nasal cannula.They also state the following: - appropriate patient monitoring (e.G.Oxygen saturation) must be used at all times.Failure to monitor the patient (e.G.In the event of an interruption to gas flow) may result in serious harm or death.- do not wrap, insulate, stretch or crush the tubing as this may impair the performance of this product or compromise safety (including potentially causing patient harm).- ensure all connections are secure during use.Check the cannula is undamaged and that the flow path is maintained.Under excessive load, the cannula may disconnect to prevent forces being transferred to the patient.
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