Investigation: per internal documentation, the devices terumo bct manufactures to collect, separate, and store blood products are terminally sterilized to a sterility assurance level (sal) of =10-6.Additionally, a sterility assurance system has been designed and employed to ensure this sal will be achieved for every lot of product manufactured.The sterility assurance system employed at terumo bct ensures the disposable device is not the source of contamination.A review of the device history record (dhr) for this unit showed no irregularities during manufacturing that were relevant to this issue.Root cause: no system-related root cause for the alleged bacterial contamination was identified.Since there was no specific machine serial numbers known or recorded in this study, no dlogs were available for review.There was no mention of related leaks, alarms, procedure pauses, or centrifuge stops reported that may have pointed toward an instance where bacteria could be introduced.Additionally, based on the sterility assurance system employed at terumo bct, the disposable device is not the source of the bacterial contamination.Sources of bacterial contamination include but are not limited to patient connection to the disposable set (venipuncture) and/or post-processing laboratory practices such as qc sampling or handling techniques.
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