The manufacturer was contacted in reference to the voluntary field safety notice / recall notification related to the sound abatement foam in certain cpap, bipap, and mechanical ventilator devices.The manufacturer previously received information alleging an issue related to bipap device's sound abatement foam.The patient alleged inhaling foam.There is no allegation of serious or permanent harm or injury.The device was returned to the manufacturer's product investigation laboratory for investigation.During the lab investigation observed an unknown dust contaminant inside the air inlet of the blower box, on the top enclosure, o-ring of the rear panel, on the rear panel, bottom enclosure, blower, blower seal, and blower box.Evidence of liquid ingress was observed to the blower and blower box.A keratin-like substance was observed on the blower box outlet.Evidence of sound abatement foam degradation/breakdown was not observed.The manufacturer concludes the device has contamination.There was no evidence of sound abatement foam degradation.
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