It was reported that the procedure was to treat a moderately calcified, moderately tortuous lesion in the superficial femoral artery (sfa).A 5.5x80 supera self-expanding stent system (sess) was advanced over the command 18 guide wire (gw) to the target lesion.While the stent was being deployed, it was noted that the stent became compressed greater than 10% and appeared to be too short to cover the entire lesion that needed to be treated.A 5.5x100mm supera stent was then advanced and deployed overlapping the implanted compressed stent, to successfully complete the procedure.There were no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
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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 incidents from this lot.It is possible that the delivery system was slightly pushed distally as the stent was being deployed resulting in the reported stent to became compressed greater than 10% and appeared to be too short to cover the entire lesion; however, this could not be confirmed.The investigation was unable to determine a conclusive cause for the reported difficulties.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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