The device was not returned for analysis.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other similar incidents reported from this lot.The investigation was unable to determine a cause for the reported difficulties.It is possible that anatomical conditions contributed to the reported difficulties.The deployment issues, slight elongation and stacking of the stent could have been caused from the distal shaft restricted within the lesion which was described as 90% stenosed; however, this cannot be confirmed.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
|
It was reported that the procedure was to treat an eccentric de novo moderately calcified mid superficial femoral artery that was 90% stenosed.The lesion was dilated using a 5x40mm non-abbott balloon at 14 atmospheres (atm) and a 5x40mm non-abbott hp balloon at 20 atm.Then a 5x80mm supera stent was attempted to deploy, but the stent implant only partially deployed although the thumbslide was able to move during the attempted deployment.Thus, the deployment lock was unlocked, the thumbslide moved, but the stent still failed to fully deploy the last 2 cm of the implant.Finally, the shaft was pulled in an attempt to deploy and the rest of the stent implant, which was ultimately successful and deployed.The delivery system was removed under fluoroscopy.Once implanted it was noted that the distal part of the implanted stent was shortened from the first half of deployment, and the proximal part of implanted stent was elongated from the pulling of the shaft.Overall, the implanted stent was slightly short in comparison to the lesion.There was no patient effects and no clinically significant delay.No additional information was provided.
|