Exemption number e2019001.(b)(4).The device was not returned for analysis.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 did not indicate a lot specific quality issue.It was reported that during advancement/removal of the device, resistance was met and use of force was applied.It should be noted that the xience sierra, everolimus eluting coronary stent system, instructions for use (ifu) states: should any resistance be felt at any time when withdrawing the stent delivery system into the guiding catheter, the entire system should be removed as a single unit.Applying excessive force to the stent delivery system can potentially result in loss or damage to the stent and/or delivery system components.It is unknown if the ifu deviation contributed to the reported event.The investigation determined the reported difficulties appear to be related to circumstances of the procedure.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 tortuous circumflex coronary artery with two 90 degree turns.During advancement, a 3.50x15mm xience sierra stent delivery system (sds) was rammed/jammed back and forth in the attempt to cross the lesion.The sds was pulled out and it was noted that the stent had snagged on the users gloves.At this point, when outside the patient anatomy, the stent was completely free and detached from the delivery system.The procedure was successfully completed with a 3.0x15mm xience sierra stent.There was no clinically significant delay in the procedure and no adverse patient effects.No additional information was provided.
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