Device evaluated by mfr: the returned device matches with upn provided by the customer.The catheter returned was inspected, it was found smashed at the renal pigtail.The device was not found broken, however, the tip of the device was found smashed.A mandrel 0.038 inches was inserted through the stent, it passed properly without resistance.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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