(b)(4).Method: the complaint rt266 infant dual-heated evaqua2 breathing circuit was returned to fisher & paykel healthcare (f&p) in new zealand, where it was visually inspected and leak tested.Results: visual inspection of the complaint rt266 infant dual-heated evaqua2 breathing circuit revealed no damage was found to the dryline.The dryline port cap was observed not fully inserted into the port.The leakage test also revealed that the breathing circuit was within specification.Conclusion: we were unable to determine what may have caused the failed leak test as reported by the customer, as no fault was found with the returned device.However, the leak the customer experienced was most likely due to the dryline port not fully closed.All rt266 infant dual-heated evaqua2 breathing circuits are visually inspected, and pressure and flow tested during production, and those that fail are rejected.The subject infant breathing circuit would have met the required specifications at the time of production.Our user instructions that accompany the rt266 infant dual-heated evaqua2 breathing circuit state the following: - "check all connections are tight before use." - "perform a pressure and leak test on the breathing system and check for occlusions before connecting to a patient." - "ensure appropriate ventilator or flow source alarms are set before connecting breathing set to patient.".
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