During device preparation, with the patient prepped under general anesthesia, an amplifier error message displayed that read, "amplifier is off or not connected, please check the connection".The device was power cycled but the issue remained, so the procedure was cancelled.There were no adverse consequences to the patient.
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Based on the results of the hardware evaluation performed, it was concluded that the returned amplifier functioned as expected.The hardware evaluation focused on the basic functions of the returned amplifier such as communication, signals acquisition/amplification and data processing.No abnormal operating symptoms or unexpected abnormal functions under normal operating condition were observed.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed.The review determined the process was performed and completed in accordance with abbott specifications and procedures.Based on the information provided and the hardware evaluation performed, the cause of the reported communication issue could not be conclusively determined.
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