The device was returned to the resmed design house located in (b)(4) for an extensive engineering investigation.The methods, results, and conclusion are not finalized at this stage.A preliminary inspection carried out by the hospital and initial review of the data recorded in device memory does not show any evidence of device malfunction.External and internal visual inspection didn't find any anomaly.The device is able to power up normally and deliver therapy.Further investigation of the device in progress.Once the investigation is complete a follow-up report will be submitted.Resmed's risk analysis for this failure modes concludes that the risk is acceptable.(b)(4).
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