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 received information alleging the flow abated and stopped in the end during use.A message "service required" was displayed on the device.There is no allegation of serious or permanent harm or injury.No medical intervention was required by the patient.The device was returned to a third party service center for evaluation.During the evaluation, the therapy pca software was confirmed to be version 1.1.6.The occurrence of onscreen "service required" was not duplicated.The error log revealed that e-4 had occurred.The error log was cleared and thereafter operation checking was performed.It was ensured no anomaly was present in the device.A life-related smell was observed, so the following parts were replaced: iso port, transition tube, blower bellows, blower boot, blower box top, inlet filter baffle, blower, flow sensor seal.The following were tests performed: overall checking, cleaning, and a functional test.
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