|
This device is used for treatment not diagnosis.The ventricular assist system is indicated for use as a bridge to cardiac transplantation in patients who are at risk of death from refractory end-stage left ventricular heart failure.The system is designed for in-hospital and out-of-hospital settings.The instructions for use and patient manual outline the steps for handling and properly connecting power sources, including ensuring proper alignment, as well as instructions not to twist or force connections together in order to prevent damage.Additionally, a reference guide for both visual and tone alarms including potential causes and actions to take and there is a warning to keep spare, fully charged batteries and back up controller available at all times.It also provides information about proper care of the system and what to do in case of an emergency.Always wait until the "ready" turns on to disconnect the battery from the battery charger.The reported inoperability of the returned battery, (b)(4), was confirmed.Various analyses were conducted and reviewed in order to evaluate the performance of the device in relation to the reported event.Review of the manufacturing documentation confirmed that the associated device met all requirements for release.Analysis of the device revealed that the device failed to meet specifications; the device passed visual examination but failed functional testing as it was completely inoperable as received.Internal visual inspection revealed an improper weld on cell pack 3 which caused an intermittent connection.Heartware has opened an internal investigation to evaluate battery cell and battery construction failures.The most likely root cause of the reported event can be attributed to improper assembly.The manufacturer will submit a supplemental report when new facts arise which materially alter information submitted in a previous mdr report.
|