(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: visual inspection was performed on the returned device.The reported deployment issue was unable to be confirmed as the stent had already been fully deployed.The tip separation was confirmed.The investigation was unable to determine a conclusive cause for the reported difficulties.A review of the lot history record revealed no manufacturing nonconformities that would have contributed to this complaint.Additionally, a review of the complaint history of the reported lot revealed no other incidents.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 total occlusion in the non-tortuous, moderately calcified proximal superficial femoral artery.A 5.0 x 120 mm supera peripheral stent delivery system (sds) was selected for the procedure.The sds was advanced to the lesion and some resistance was felt while pushing and retracting the thumbslide during deployment of the stent implant and additional resistance was felt near the end of the deployment of the stent.Once the stent was completely deployed and released from the sds the resistance stopped.The sds was removed from the anatomy, it was observed that the tip was missing and was still in the anatomy.An unspecified snare was used to retrieve the tip from the anatomy.There was no reported clinically significant delay in the procedure.There was no reported adverse patient sequela.No additional information was provided.
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