It was reported that during a mildly tortuous right internal carotid artery stenting procedure, the rx acculink stent delivery system (sds) was taken to the mildly calcified lesion.The handle was unlocked, but the pull back handle would not pull back.The stent failed to deploy.There was no exposure of the stent or partial stent deployment.The sds was removed without issue and a second same device was used without issue.There was no adverse patient sequela and no clinically significant delay in procedure reported.There was no additional information provided.The device was returned with the stent noted to be exposed.
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(b)(4).Evaluation summary: the device was returned for analysis.Failure to deploy the stent was able to be confirmed.Additionally, there was 1mm of the distal end of the stent exposed at the distal end of the outer distal sheath.Based on a visual and functional inspection of the returned device, there is no indication of a product deficiency.A review of the lot history record revealed no non-conformances that would have contributed to the reported event.A query/review of the complaint history of the reported lot did not indicate a manufacturing issue related to failure to deploy.Based on the reviewed information, no product deficiency was identified.
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