Ps345699.Method: the complaint 900mr810 adult heated wall reusable breathing circuit was received at fisher & paykel healthcare (f&p) in new zealand for evaluation where it was visually inspected.Result: visual inspection of the complaint circuit revealed that the dryline tube was over stretched.Conclusion: the identified damage is most likely due to pulling of the dryline tube.All 900mr810 adult heated wall reusable breathing circuits are visually inspected and pressure tested for leaks before releasing for distribution.Any breathing circuit which fails any of these tests is discarded.The complaint device would have met the specification at the time of production.Our user instructions that accompany the 900mr810 adult heated wall reusable breathing circuit state the following: - "inspect circuit before re-use, do not use if the circuit shows signs of deterioration, such as: cracks, tears, or damage." - "perform a pressure and leak test on the breathing system, and check for occlusions, before connecting to a patient." - "disconnect tube by handling end connectors only, do not pull or twist tubing, as this may cause damage.".
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