This event has been recorded under zimmer biomet complaint number (b)(4).This report is being filed to relay additional information.The reported event was confirmed by the service technician who performed the evaluation and repair.On 7 january 2020, it was reported that a dermatome was not working and ran irregularly on (b)(6) 2019.The customer returned a zimmer air dermatome serial number (b)(6) for evaluation.Evaluation of the device on 27 january 2020 noted that the needle bearing was defective, the swivel was loose, and that the device was out of calibration at the zero setting.Upon further evaluation, it was found that the motor ran within motor speed specifications, but ran erratically.Repair of the dermatome occurred on 12 february 2020 and involved replacing the motor, needle bearing, swivel, motor sleeve and nut bearing lock.The technician then tested and verified that the device was functioning as intended, then returned the device to the customer without further incident.The device was tested, inspected, and repaired.While the service technician found that the motor ran erratically, which would cause the dermatome to not work as intended, it cannot be determined from the information provided as to what caused the motor to break down.As such, a specific root cause of the reported event cannot be determined.The investigation was based on the information that was provided initially and any information that was obtained throughout the follow-up process.Review of the information provided during the investigation determined that there are no further actions needed at this time.This complaint will be tracked and trended for any adverse trends that may warrant further action.
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