This event has been recorded by zimmer biomet under cmp-(b)(4).The device history record (dhr) and previous repair report reviewed noted no related non-conformances, requests for deviation, change notices or any other issues with manufacturing or with the device.The dhr and previous repair report review also found that all verifications, inspections and tests were successfully completed.Product review of the electric dermatome on (b)(6) 2019 revealed that the motor was running weak and erratically.The calibration was within specifications and the control bar was in the correct position.The customer did not return a power supply for evaluation.Repair of the electric dermatome was performed by zimmer biomet surgical on (b)(6) 2019 which included replacement of the seal/strain relief, o-ring, end cap, plug harness assembly, switch, motor, semi-circle bearings, vespel bearings, ball bearing, and spring seal.Electric dermatome, serial number (b)(4), was then tested and functioned properly.It was repaired, inspected and tested.While the returned product investigation confirmed that the electric dermatome had a malfunctioning motor, it cannot be determined from the information provided what actually caused the reported event.Therefore, based on the information provided, a specific root cause of the reported event cannot be determined.The device was noted to be functioning as intended after the seal/strain relief, o-ring, end cap, plug harness assembly, switch, motor, semi-circle bearings, vespel bearings, ball bearing, and spring seal were replaced.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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