(b)(4).To lay user/patient.Method: the complaint myairvo humidifier was received at fisher & paykel healthcare (f&p) new zealand for investigation.The device was visually inspected and the speaker was tested.Results: visual inspection did not reveal any external damage on the complaint myairvo.The speaker of the complaint device was working as intended.Conclusion: as part of our ongoing product improvement initiatives, we have implemented a soak test for 100% testing of the speaker harness on the myairvo production line, which identifies and discards any faulty speakers prior to assembly into the myairvo.Additionally a new speaker unit has more recently been sourced from a different supplier.The myairvo user manual states that the "myairvo is for the treatment of spontaneously breathing patients who would benefit from receiving high-flow, warmed and humidified respiratory gases." and that " the unit is not intended for life support." the user manual warns the user: prior to each patient use, ensure that the auditory alarm signal is audible by conducting the alarm system functionality check described in the alarms section.The alarm system functionality check instructs the user on how to check the alarm function and states that "if either alarm signal is absent, do not use the unit.Contact your fisher & paykel healthcare representative.".
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