On (b)(6) 2018, it was reported that the unit lost power when pressure was applied.The customer returned an electric dermatome device, serial number (b)(4), for evaluation.The device history record (dhr) review noted no related non-conformances, requests for deviation, change notices or any other issues with manufacturing or with the device.The dhr review also found that all verifications, inspections and tests were successfully completed.Zimmer biomet surgical has not previously repaired evaluated electric dermatome serial number (b)(4), as documented in the repair reports in livelink.Product review of the electric dermatome on (b)(6) 2018, revealed that the calibration was out of specifications at the zero setting only.The motor speed was out of specifications and ran erratically 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) 2018, which included replacement of the power cord assembly, power switch, ball detent, thickness lever, reciprocating arm, bearings, seal and retaining ring, motor, and o-ring.Electric dermatome, serial number (b)(4), was then tested and functioned properly.It was repaired, inspected and tested.The reported event was confirmed since during the product review it was noted that the motor speed was out of specifications and ran erratically.The root cause of the reported event could not be specifically determined with the information that was provided.During the product review it was noted that the motor speed was out of specifications and ran erratically.It is unknown with the information that was provided how this occurred.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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