(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: the device was returned for analysis.The reported material deformation, the reported unstable stent and the reported stent dislodgement were able to be confirmed.The reported difficult to position and the reported difficulty to remove were unable to be replicated in a testing environment due to the condition of the returned device.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 did not indicate a lot specific quality issue.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 a heavily tortuous and heavily calcified mid right coronary artery.A 3.5 x 38 mm xience xpedition stent delivery system (sds) was being advanced through a guideliner when the stent got stuck and was damaged.The sds was pulled back through the guideliner, the stent became loose and when it was pulled into the co-pilot, it dislodged.The stent was easily removed.A second 3.5 x 38 mm xience xpedition was being advanced when it met resistance with the anatomy and could not cross the lesion.The device was removed and a non-abbott stent was successfully deployed to complete the procedure.There was no clinically significant delay in procedure and no adverse patient effects.No additional information was provided.
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