(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: a visual and dimensional inspection was performed on the returned device.The reported deployment issue and difficulty removing was unable to be confirmed as the stent had already been fully deployed.The tip separation was confirmed.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.The investigation determined that the reported difficulties were likely related to circumstances of the procedure.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 moderately calcified superficial femoral artery.A 5.5 x 150 mm supera peripheral stent system was used and the stent was deployed after retracting the thumbslide and unlocking the deployment lock.The device did not meet any resistance during advancement; however, the device met resistance during removal; therefore, the physician stopped retracting the device.It was then noted under fluoroscopy that the catheter tip separated inside an unspecified introducer sheath.Therefore, the introducer sheath and the device were removed as a single unit, and it was noted that the stent, which was partially deployed, had dislodged inside the introducer sheath.The stent was then manually removed via laser arteriotomy at the access site.Then, a different unspecified introducer sheath and another unspecified supera device were used to successfully complete the procedure.There was a clinically significant delay in the procedure.No additional information was provided at this time.
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