(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The device was not returned for analysis.The investigation determined an interaction with the calcified anatomy contributed to the resistance during advancement.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 of the reported lot did not indicate a lot specific quality issue.The reported patient effect of dissection is listed in the xience prime everolimus eluting coronary stent system instructions for use as a known patient effect of coronary stenting procedures; however a conclusive cause was unable to be determined for the patient effect.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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It was reported that the procedure was to treat a de novo lesion in the mildly tortuous, mildly calcified mid left anterior descending (lad) coronary artery.A 3.50 x 15 mm xience prime stent delivery system (sds) was selected for the procedure.The sds was advanced to the lesion with resistance, but it crossed and the stent was deployed with no issues noted.Following deployment of the stent implant a dissection was observed.A 3.50 x 15 mm xience pro stent implant was used to successfully cover the dissection.There was no reported clinically significant delay in the procedure.No additional information was provided.
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