This follow-up report is being submitted to relay additional information.The reported event was confirmed through information received regarding the event.Device history record review is not applicable, as the event is regarding an instrument missing from a surgical kit which is reassembled with reusable instruments after cleaning from previous procedures.Review of complaint history found no other reports of this nature for the reported part number.It was stated the surgeon was made aware the drill was missing prior to commencement of the procedure; the decision was made to proceed inspite of the missing item.The bill of materials for surgical kits is created by (b)(4) to meet (b)(4) and other global guidelines; however, the bill of materials can be amended by the (b)(4).The drill was not identified by customer services as missing upon receipt of the kit, as the drill was not included in the required items specified in the bill of materials for the kit.The root cause of the drill not being present in the case cannot be determined as it is unknown who modified the bill of materials for this case.The cause of the case being stopped mid procedure, and the patient being reopened at a later date is due to the surgeon proceeding without the required drill.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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