H11: section a through f - the information provided by bd represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant/reporter was unable or unwilling to provide any further patient, product, or procedural details to bd.The following were reviewed as part of this investigation: patient severity, complaint and lot history review, applicable previous investigation(s), sample (if available), labeling, and applicable fmea documents.Based on a review of this information, the following was concluded: the complaint of difficulty activating a safety mechanism is confirmed; however, the exact cause is unknown.One 22 g x 0.75 in.Safestep infusion set was returned for evaluation.An initial visual observation showed use residue on the returned sample.The safety mechanism was observed to not be activated, and the needle was observed to be bent near its base.A microscopic observation revealed a yellow-brown residue on the needle shaft and the metal sleeve of the safety mechanism.This residue was found to fluoresce under uv light; however, it in unknown of this residue was present prior to use or if the sample came into contact with it during use.No damage was observed on the needle tip.Resistance was met when attempting to activate the safety mechanism; however, the safety mechanism was able to be fully engaged over the needle tip with some force.The bend in the needle was found to be severe enough and in a location where it would cause difficulties in activating the safety mechanism of the returned infusion set.Additionally, the observed residue on the needle shaft may have also contributed to this difficulty in activation.However, it is unknown when or where the returned sample was bent or may have come into contact with the observed residue.Therefore, the root cause(s) of the difficulty encountered while attempting to activate the safety mechanism is unknown.Possible causes include damage during storage, handling, or use.H3 other text: evaluation findings are in section h11.
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