This follow up report is being submitted to report to additional information the following sections were updated.On (b)(6) 2018, it was reported that the unit's power to hand piece fluctuates intermittently.The customer returned an electric dermatome power supply, serial number (b)(4), for evaluation.The device history record (dhr) review was not performed since this investigation falls within the scope of icwr008 (limited investigation) as the device functioned as intended and there were no faults found during initial inspection.Zimmer biomet surgical has previously repaired/evaluated electric dermatome power supply serial number (b)(4) one time as documented in the repair reports.The last repair was october 17, 2017 where it was reported that the device needed preventative maintenance and the device was evaluated with no components replaced.This is not a related issue.Product review of the electric dermatome power supply on (b)(6) 2018 revealed that the voltage did not fluctuate during testing.There were no repairs required.The electric dermatome power supply was not repaired as the device functioned as intended and passed all required testing.It was inspected and tested.The reported event was not confirmed since the device functioned as intended.The reported event was not confirmed since the device functioned as intended during initial inspection; hence, a root cause cannot be determined.There were no other issues with the device.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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