(b)(4).The rt200 is not sold in the usa but it is similar to a product which is sold in the usa.The 510(k) for that product is k983112.Method: the complaint rt200 adult dual heated evaqua2 breathing circuit was not returned to fisher & paykel healthcare for evaluation.Our investigation is thus based on the information provided by the hospital.Results: the customer experienced condensation during use of a rt200 circuit, and resulted in ventilator to malfunction.Conclusion: without the complaint device, we are unable to determine what may have caused the condensation reported.Condensate in the humidification system, although not preferred, is an expected side effect of heated pass-over humidification systems in many conditions, and may vary between light misting to water droplets that form on the wall of cool breathing circuit tubing.The amount of condensate in the ventilation system is influenced by a number of multiple setup and environmental factors.Our user instructions that accompany the rt200 adult breathing circuit state the following: set appropriate ventilator alarms.Check that the heater wire is evenly distributed along the circuit and not bunched or kinked.Do not stretch or milk the tubing.When mounting a humidifier adjacent to a patient ensure that the humidifier is always positioned lower than the patient.Check breathing circuits for condensation every 6 hours and drain if required.
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