The device was returned to inability to interrogate and no pacing.The reported events of inability to interrogate and pacing issues were confirmed.A malfunction based on analysis was found.As received, the device had no telemetry communication and no output.A device history record (dhr) review was performed and all required manufacturing processes and inspection steps were confirmed to be completed per the requirements.The device met specifications prior to leaving abbott manufacturing facilities.Visual inspection of the header attachment area detected a bonding anomaly.A device hermeticity breach was observed, consistent with feedthrough damage as a result of fluid intrusion between the header and case, and subsequent fluid ingress to the internal electronics.The device was cut open to enable further testing and battery was found in normal range.Hybrid circuitry was tested, and results indicated normal current drain.A manufacturing anomaly may have occurred, which resulted in the header bonding anomaly and the reported events of inability to interrogate and no pacing.The device is included in the assurity and endurity pacemakers header anomaly advisory issued by abbott on 15 march 2021.
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