(b)(4).The device was not returned for analysis.It is possible that inadvertent mishandling during unpackaging/ sheath removal and/or during preparation resulted in the reported stent shift; however, this cannot be confirmed.The reported stent dislodgement appears to have resulted from subsequent use error as the physician tried to move the stent to the original position; however, the stent dislodged from the balloon.The xience alpine everolimus eluting coronary stent system instructions for use states: prior to using the xience alpine stent system, carefully remove the system from the package and inspect for bends, kinks, and other damage.Verify that the stent does not extend beyond the radiopaque balloon markers.Do not use if any defects are noted.However, do not manipulate, touch, or handle the stent with your fingers, which may cause coating damage, contamination, or stent dislodgement from the delivery balloon.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 similar incidents from this lot.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 stent was observed to be shifted on the balloon during preparation of a 3.0 x 28mm xience alpine.The physician tried to move the stent to the original position; however, the stent dislodged from the balloon.There was no patient involvement.There was no clinically significant delay in procedure.A new xience alpine was used to complete the procedure.The physician commented that preparation of the device was done by a doctor in training and the stent might have caught on the protective sheath during removal, but this could not be confirmed.No additional information was provided.
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