(b)(4).Device evaluated by mfr: promus element ous, mr 3.0 x 28mm, stent delivery system (sds) was returned for analysis.A visual examination of the crimped stent found the first strut on the proximal side lifted and pulled distally and the first strut on the distal end was slightly opened.The stent outer diameter (od) of the undamaged stent was measured and was within max crimped stent specifications indicating that there were no issues with the crimp stent profile.The balloon cones were reviewed and no issues were noted.The balloon wings were tightly wrapped and evenly folded and were not subjected to positive pressure.A visual and tactile examination found a hypo tube kink 70mm distal to the strain relief.A visual and tactile examination found a midshaft kink 1mm proximal to the port weld.The bi-component bond showed no signs of damage or strain.A visual and tactile examination found no damage to the tip.No other issues were identified during the product analysis.The manufacturing batch record review confirmed that the device met all material, assembly and performance specifications.The most probable root cause is operational context as device performance was limited due to anatomical procedural factors.(b)(4).
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Reportable based on device analysis completed on 05-dec-2016.It was reported that crossing difficulties were encountered.A 3.00x28mm promus element ¿ drug-eluting stent was advanced for treatment; however, the device failed to pass through the lesion.The procedure was completed with another of the same device.No patient complications were reported and the patient's status was stable.However, returned device analysis revealed stent damage.
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