The device was returned for analysis.The reported material deformation was confirmed.The reported failure to advance could not be replicated in a testing environment as it was related to operational circumstances of the procedure.Additionally, it was noted that there was stretching and bunching sporadically on the inner member and outer member (shaft) distal to the mid lap seal.All noted damage to the delivery system is likely due to handling and/or manipulation of the device during the procedure.The investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely the device interacted with the heavily calcified, heavily tortuous and 80% stenosed anatomy causing the reported failure to advance and subsequent material deformation.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported that the procedure was to treat an 80% stenosed, heavily calcified and tortuous left anterior descending (lad) bifurcation and posterior diagonal branch.Due to the anatomy, two xience alpine stent delivery systems (3.0x33mm, 2.5x15mm) failed to cross, and there was damage noted to the struts.The stents were not implanted.There was no adverse patient effect or a clinically significant delay in procedure.The devices were received and the analysis revealed that the inner and outer shaft of the 3.0x33mm stent system was stretched.No additional information was provided.
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