(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 provided by the customer and our knowledge of the product.Results: the customer stated that the tubing of the complaint device was found to have a tear during use.Upon further investigation by the customer, it was found that the device was accidentally cut when opening the boxes where the circuits were stored in.Conclusion: based on the information provided by the customer, the reported event was due to a cut with a sharp object when opening the box with a knife as stated by the customer.All rt380 adult evaqua2 breathing circuits are visually inspected and pressure and flow tested during production, and those that fail are rejected.The subject infant breathing circuits 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: 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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