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Investigation/evaluation: a review of documentation was performed.This included a review of complaint history, the device history record, drawings, the instructions for use (ifu), manufacturing instructions, and quality control data.The zenith flex with spiral-z technology aaa endovascular graft iliac leg was returned for investigation.The entire delivery system was returned with the stent graft still sheathed and without original packaging.There were no signs of use or damage except for a permanent bend in the system due to transportation packaging.An attempt was made to flush the system using the captor valve luer extension and using a 30mm syringe.Excess pressure was used before fluid was observed.Fluid was noted from the delivery system in the order of the iris valve, pin vice, then the flushing groove.The evaluation revealed that there was leaking through the valve far before fluid emerged from the tip.The evaluation did not observe leakage through the valve housing as was reported that physician had observed.Flushing was achieved by inducing a large enough flow rate through the valve to match the pressure gradient in the system to the valve.The device history records were reviewed which included the finished assembly, sheath assembly and the captor valve assembly.Nonconformances on captor valve assembly were noted for staging error (reworked), failed leak check (scrapped), work order error (reworked), damaged web (scrapped), and failed leak test (scrapped).Each zenith device is shipped with instructions for use (ifu), listing the indications for use, contraindications, warnings and precautions, and the correct deployment procedure.The ifu advises, ¿do not use this device if damage has occurred as a result of shipping.If damage has occurred, do not use the product and return to cook." based on the investigation evaluation, a definitive root cause for the leakage could not be determined.Measures have been initiated to address this failure mode.Monitoring will continue to be performed for similar complaints.
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