One controller was returned for evaluation.Various analyses were conducted and reviewed in order to evaluate the performance of the device in relation to the reported event.Analysis of the device revealed that the device failed to meet specifications; the device failed visual inspection as a result of the serial data port cover found missing, confirming the reported event.The missing serial port cap was most likely due to improper handling of the device.The instructions for use and patient manual include a warning to keep a spare back up controller available at all times and outlines that if there is a controller failure, the controller should be switched to the back-up controller.The steps for exchange of devices are also outlined.It further warns that damaged equipment should be reported to the manufacturer and inspected.Heartware will submit a supplemental report when new facts arises which materially alters information submitted in a previous mdr report.This event was assessed and is being reported as part of a retrospective review of events, which was in response to an update to the mdr decision criteria.
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