A customer reported a positive result with a cyclesure® 24 biological indicator (bi) after a completed sterrad® 100nx cycle.The bi was incubated for 12 hours.The chemical indicator (ci) changed color correctly.The previous and subsequent bi results were both negative.The affected load was reprocessed.There was no report of infection, injury or harm to patient(s) associated with this issue.Although there is no report of patient injury or harm and no prior incidents have resulted in serious injury, advanced sterilization products (asp) has determined in this situation sterility cannot be assured.Therefore, as a matter of policy asp had decided to report all incidents of positive cyclesure® 24 biological indicators.
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(b)(4).Asp investigation summary: the investigation included a review of the device history record (dhr), trending of the product malfunction code, trending of lot number, system risk analysis (sra), and product retains analysis.The dhr was reviewed and the involved lot met manufacturer specifications at the time of release.No anomalies were observed that would contribute to the customer's experienced issue.(b)(4).The sra indicates the risk associated with exposure to biohazardous, pathogenic or infectious material is "low." the suspect positive cyclesure® bi was not returned for evaluation.No retains testing was not performed as the lot has expired.It is unlikely the suspected positive bi was caused by a manufacturing issue since dhr review found no anomalies that would contribute to a positive bi result and lot history review found trending was not exceeded.An issue with sterrad® performance is also unlikely as the cycle passed and the customer stated subsequent bis were negative for growth.Insufficient information is available to determine the assignable cause.The suspect bi was not returned and could not be evaluated for user error.The issue will continue to be tracked and trended.
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