(b)(4).Internal file number - (b)(4): during processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: a visual and dimensional inspections were performed.The torn shaft and the material deformation were confirmed.The reported physical resistance was unable to be replicated in a testing environment as it was based on operational circumstances.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 reported from this lot.The investigation determined the reported physical resistance appears to be related to circumstances of the procedure.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 lesion located in the circumflex artery that was mildly tortuous, mildly calcified and 100% stenosed.When the xience xpedition 2.50 x 15 crossed the lesion, it was noticed that the stent struts were flared.The device was removed and replaced with another stent to complete the procedure.There were no reported adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.Device analysis revealed there was a radial shaft tear in the shaft of the xience xpedition, 1 mm distal to mid lap seal.Follow-up confirmed the tear was caused when touching the calcified plaque during advancement of the stent delivery system to the lesion.
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