It was reported that the patient presented in the clinic for a follow-up.Upon interrogation, the pacemaker was unable to be interrogated by a programmer and had no magnet response.Subsequently, it was discovered that the pacemaker went to backup mode.The device was explanted and replaced.The patient was in stable condition.
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The reported events of inability to interrogate, device was in backup mode, and no magnet response were confirmed.The device was received with no output and no telemetry communication.Visual inspection of the header attachment area detected an anomaly.A device history record (dhr) review was performed and all required manufacturing processes and inspections steps were confirmed to be completed per the requirements.The device met specifications prior to leaving abbott manufacturing facilities.The device was cut open to enable further testing and the battery was found at end-of-service level.Feedthrough leak test was performed, indicating a device hermeticity breach.This is consistent with feedthrough damage as a result of fluid intrusion between the header and case, and subsequent fluid ingress to internal electronics.Hybrid circuitry was tested, and the results indicated normal current drain.A manufacturing process anomaly may have occurred, which resulted in the header bonding anomaly.
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