(b)(4).The actual device was returned for evaluation.Reliability engineering evaluated the device and observed that there was a metal particle at the burr lock assembly.The burr lock mechanism assembly was disassembled and the 2 springs (44-2442) for the lock tabs (44-2790) had failed and were not pushing on the lock tabs to secure cutter devices.It was observed that one of the springs was out of place and disintegrated.It was further observed that the other spring was out of place and was completely gone.Therefore, the reported condition was confirmed.It was determined that the springs came out of place as a result of the handpiece being run without a cutter device.The assignable root cause was determined to be due to user misuse/abuse.If information is obtained that was not available, a follow-up medwatch will be filed as appropriate.
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It was reported that during a sterilization process, it was observed that the motor device had metal pieces coming out of the cord and the device did not run well.There was no patient involvement reported.There were no reports of injuries, medical intervention or prolonged hospitalization.All available information has been disclosed.If additional information should become available, a supplemental medwatch report will be submitted accordingly.
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