(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).Evaluation summary: visual inspection was performed on the returned device.The deployment issue was not able to be confirmed as the stent had already been deployed.Follow-up with the site confirmed the stent was removed from the patient anatomy and that the stent was deployed after the procedure outside of the patient.The investigation was unable to determine a cause for the reported difficulties.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot.Additionally, a review of the complaint history of the reported lot revealed no other incidents.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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It was reported that the procedure was to treat a de novo lesion in the 80% stenosed, narrow, mildly calcified, mid internal carotid artery.The 6.0x8.0mm acculink self-expanding stent system (sess) was advanced to the lesion, and partially deployed but the stent would not release out of the delivery system.The stent was removed from the patient anatomy and the stent was then deployed out of the delivery system.Another unspecified abbott stent was used to successfully complete the procedure.There was no adverse patient effect and no clinically significant delay in the procedure.No additional information was provided.
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