(b)(4).The rt268 infant dual heated evaqua2 breathing circuit is not sold in the usa but it is similar to a product sold in the usa.The 510(k) for that product is k103767.Method: the complaint rt268 circuit's expiratory limb was received and was visually inspected.Results: the evaqua2 limb had degraded.The degradation is most likely caused by the nebulizing alevaire (tyloxapol) agent that the customer had used.In addition, excessive use of the circuit for 10 days may have also contributed to the damage.Conclusion: the rt268 infant dual heated evaqua2 breathing circuit is a single use device that is intended to be used for a maximum of seven days.Furthermore, the user instructions that accompany the rt268 state: -"this product is intended to be used for a maximum of 7 days." -"do not soak, wash, sterilize, or reuse this product.Avoid contact with chemicals, clenaing agents, or hand sanitizers." -"reuse may result in transmission of infectious substances, interruption to treatment, serious harm or death." - do not use medications containing tyloxapol (such as tacholiquin) as this may damage the tubing and lead to a loss of ventilation pressure.
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