Current information is insufficient to permit a conclusion as to the cause of the event.Review of device history records show the lot released with no recorded anomaly or deviation.Review of manufacturing history found no evidence of product nonconformance.Examination of the trial confirms the reported condition, as foreign material on the device tested (b)(6) for hemoglobin.User facility¿s sterilization technique was reviewed and confirmed to be conforming to manufacturer instruction.It is likely that there was an improper cleaning technique used at some point during the trial¿s 4 years of use; however, a conclusive root cause of the event cannot be determined with the available information.There are warnings in the package insert that state that this type of event can occur: under cleaning and decontamination, number 2 states, "disassembly-the majority of surgical instruments and trial prostheses are constructed in such a way that they will not require disassembly.However, some of the more complex instruments are made of several components and these should be disassembled into their individual parts prior to decontamination.In most cases the method of disassembly is self-evident.Loosen and/or disassemble instruments with removable parts.Screws or bolts on some instruments can be loosened for cleaning but are self-retaining to prevent loss.Particular attention should be taken to remove all debris from all cannulations, crevices, serrations, and obscure holes in the instruments." number 3 states, "washing/disinfecting- it is recommended that the instruments, disassembled as required, be decontaminated using an automatic washer-disinfection unit utilizing thermal disinfection.This should preferably be of the ultrasonic or continuous tunnel process type." this report is number 6 of 10 mdrs filed for the same patient (reference 1825034-2016-04155 - 04164).
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Further investigation was conducted on the reported issue, and the root cause was updated accordingly.Further evaluation relayed that this issue is determined to be a design related issue.The parts were determined to be manufactured non-conforming.A design change has been initiated to address the reported event.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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