(b)(4).A visual inspection was performed under microscope confirming damage to the internal lock tube of the shaft.Tear down of the shaft assemblies was performed to confirm observations.Two grasper tool tips were returned with the shaft and both functioned properly.The reason the tool tips fell off during the procedure was due to the lock tube security was compromised and could not lock the mechanical tool tip as designed.The device history review for the product 5mm johans grasper, lot #73m1500300 investigations did not show issues related to the complaint.The root cause is the instrument was not used correctly during attaching and removal of the mechanical tool tip resulting in breaking the lock tube.No corrective action at this time.The manufacturer will continue to monitor and trend related events.
|