The device history record review noted no spontaneous anomalies, request for deviations, non-conformances or other issues with the production of this device.The review of the manufacturing process and the engineering design noted no systemic issues with this device.The customers reported event was that the saw blade got stuck in the bone during use and the blade would not lock in the hand piece.After removing the saw blade from the hand piece using pliers, it was noted that the locking tabs were missing.Inspection at incoming confirms that the mounting tabs were missing.Historically, the most probable cause for this event is the saw blade binding during use.The usual cause for binding saw blades is moving the saw hand piece too quickly for the saw teeth to adequately cut the material.The reported event noted that the saw blade got stuck.Most likely the pushing and pulling on the hand piece to free the bound saw blade caused the locking tabs to tear away from the mounting hub.This would cause the saw blade to not reattach and lock.The galling and scratches noted on the saw blade at incoming inspection are probably due to the pushing and pulling as well as the use of the pliers to remove the blade.There are no recommended actions at this time; the severity and frequency do not warrant further actions.
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