(b)(4).The device was returned for service; however, did not meet manufacturing specifications during pre-repair assessment.Reliability engineering evaluated the device and the reported condition was confirmed.The assignable root cause was determined to be due to device wear from normal use and servicing.If additional information should become available, a supplemental medwatch report will be sent accordingly.
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It was reported by (b)(6) that the battery oscillator handpiece device operated but then it would stop.During service and evaluation, it was observed that the coupling tool side was wornout, clamping ring was spliced, vibrating head was loose and switching ring was too weak.It was further noted that the device failed pre-test for check for saw blade coupling and mode switch test.This event did not occur during surgery.There was no patient involvement.There were no reports of injuries, medical intervention or prolonged hospitalization.The exact date of this event was unknown.All available information has been disclosed.If additional information should become available, a supplemental medwatch report will be submitted accordingly.
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