(b)(4).Method: the complaint rt380 evaqua 2 adult breathing circuit was not returned to fisher & paykel healthcare (f&p) for evaluation.Our investigation is thus based on the information and photograph provided by the customer, and our knowledge of the product.Results: visual inspection of the provided photo identified that the evaqua 2 tube was degraded.Conclusion: based on our knowledge of the product and the results of previous investigations into similar complaints, this failure mode may be due to a number of reasons, including the use of harsh cleaning chemicals on the breathing circuit, the reuse of the single use circuit, using the circuit for longer than its intended life, and/or possible over exposure to uv light.All rt380 adult evaqua2 breathing circuits are visually inspected and pressure and flow tested during production, and those that fail are rejected.The subject adult breathing circuit would have met the required specifications at the time of production.Our user instructions that accompany the rt380 adult evaqua2 breathing circuit state the following: this product is intended to be used for a maximum of 14 days do not soak, wash, sterilize, or reuse this product.Avoid contact with chemicals, cleaning agents, or hand sanitizers reuse may result in transmission of infectious substances, interruption to treatment, serious harm or death.Perform a pressure and leak test on the breathing system and check for occlusions before connecting to a patient.Set appropriate ventilator alarms.
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