It was reported that the procedure to treat a lesion in an unspecified artery.The 2.25x12mm xience pros stent delivery system (sds) was attempted to be used in the procedure; however, the sds met with resistance upon entering the guide catheter.Therefore, the sds was removed and the stent was noted to be no longer positioned correctly on the delivery system and had become deformed.Another xience pros stent was used to complete the procedure.There was no adverse patient effect and no clinically significant delay reported in the procedure.No additional information was provided.
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The device was returned for analysis.The reported material deformation was confirmed.The reported stent dislodgement was not confirmed.The reported difficulty to advance could not be replicated in a testing environment as it was related to operational context of the procedure.Lot history record (lhr) and corrective and preventive actions (capa) reviews were performed and revealed no indication of a product quality issue.Additionally, a review of the complaint history identified no other incidents from this lot.The investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely the device interacted with the guide catheter during advancement causing the reported difficulty to advance and subsequent material deformation.The reported stent dislodgement could not be confirmed during return analysis of the device; however, it is possible that the material deformation (lifted, bent, stretched, overlapping struts) was identified as a dislodgement by the account.There is no indication of a product quality issue with respect to manufacture, design or labeling.The xience pros device is currently not commercially available in the us; however, it is similar to a device sold in the us.
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