(b)(4).
Device returned to supplier/manufacturer for evaluation and repair.
The reported event is confirmed.
Product was returned to the supplier for evaluation and repair.
The visual inspection identified that the anodize appeared lighter than usual.
It was alo noted that the hand piece runs forward but not in reverse.
A lot of moisture was noted at the end of the motor and on top of the bearing.
The appearance of the housing indicated that the anodize surface was coming off.
The motor, housing, shaft face, threaded insert, tvs, housing, buttons, all seals, o-rings, and flex strip were replaced and tested per procedure.
Maintenance review of the device indicates that it has not been previously repaired.
Review of the complaint history determined that no further action is required.
A definitive root cause was attributed to the moisture getting past the worn o-rings and seals, or the motor being worn from use, or both.
No corrective actions, preventive actions, or field actions resulted after investigation of this event.
If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.
Zimmer biomet will continue to monitor for trends.
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