It was reported that the procedure was to treat a de novo lesion located in the left superficial artery that was both moderately calcified and tortuous.After lesion pre-dilatation with a 6x150mm armada 35 balloon, the 6x150mm absolute pro ll was advanced to the lesion, markers positioned exactly over the lesion and implanted; however, the stent foreshortened and did not completely cover the lesion.There was no adverse patient effect or clinically significant delay.Another absolute pro was implanted to fully cover the lesion.No additional information was provided.
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The device was returned for analysis.The reported shortened stent was unable to be confirmed as the stent remains in the anatomy.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 during stent deployment interaction with the moderately calcified and tortuous anatomy and/or the delivery system was slightly pushed distally as the stent was being deployed resulting in the reported stent shortening; however, this could not be confirmed.The investigation was unable to determine a conclusive cause for the reported difficulties.As there was no damage noted to the device during the inspection prior to use, manipulation of the device likely resulted in the noted device damages (wrinkled/bunched distal sheath, kinked inner member); possibly contributing to the reported difficulties.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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