It was reported that a contralateral approach was taken from the left circumflex artery (cfa) to treat a heavily calcified, mildly tortuous, 100% stenosed, de novo, right superficial femoral artery (sfa).After lesion preparation, a 6x150mm supera peripheral self-expanding stent system (sess) was advanced to the lesion against resistance from the calcified lesion.After stent deployment was initiated, and before the stent was fully deployed, the thumb slide continued to spin.The partially deployed stent was manipulated and deployed at the intended site; however, it was intentionally deployed in a slightly compressed, controlled manner, due to the lesion calcification.A second 6x150mm supera sess was advanced with resistance from the highly calcified anatomy.After approximately 2cm of the stent was deployed, the thumb slide continued to spin, and the stent would not further deploy.The partially deployed stent was simply removed from the guiding catheter.A 6x120mm supera ses was advanced to the lesion, also with resistance from the anatomy.After approximately 4cm of the stent was deployed the thumb slide continued to spin, and the stent would not further deploy.The partially deployed stent was simply removed from the guiding catheter.There was no adverse patient effect and no clinically significant delay in the procedure.Two non-abbott stents were used to successfully complete the procedure.No additional information was provided.
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The device was not returned for evaluation.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 similar complaints reported from this lot.The investigation determined that the reported difficulties were related to circumstances of the procedure.It is likely that anatomical conditions contributed to the reported difficulty advancing as the anatomy was described as highly calcified.Additionally, it is likely that the distal sheath of the delivery system was bent or entrapped in the challenging anatomy preventing the ratchet from engaging the stent properly resulting in difficulty advancing the thumbslide and partial deployment.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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