Result code- screws missing from the dermatome.The device history record for zimmer air dermatome serial number (b)(4) was reviewed noted no related non-conformances, requests for deviation (rfd), change notices (cn), or any other issues with manufacturing.The record review found no issues with the device and all verifications, inspections, and tests were successfully completed.Using the machine-repair reports and the repair sites folders on livelink as well as sap to query for all repairs on serial number (b)(4) prior to (b)(6) 2019, the device was noted to have not been previously repaired.The reported event was confirmed by the service technician who performed the evaluation and repair.On (b)(6) 2019, it was reported from (b)(6) that a dermatome was missing a width plate screw.The customer returned a zimmer air dermatome serial number (b)(4) for evaluation.Evaluation of the device on 13 march 2019 found that the device was out of calibration at the zero setting and that the width plate screws were missing.Repair of the device occurred on 30 april 2019 and involved replacing the missing screws and the needle bearing as well as recalibrating the device.The technician then tested and verified that the dermatome 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 width plate screws were missing from the device, it cannot be determined from the information provided as to what caused the screws to go missing.Therefore, 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.
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