The lot records have been reviewed with special attention to the manufacturing and inspection of this product and the product was found to have met all specifications prior to shipment.As part of all complaint investigations, an attempt was made to evaluate the subject device as well as the device usage.In this particular case no sample and no images were provided for evaluation.Potential factors which may have caused or contributed to the reported issue have been considered.Previous investigations of similar complaints have been reviewed.This event may be associated with a difficult patient anatomy, which led to increased friction and the subsequent sheath fracture.In this case it was reported that the treatment site was extreme narrowed.The tracking path and anatomy were not tortuous or calcified.There were no difficulties in advancing the delivery system to the target lesion.The lesion was predilated and the proximal end of the stent graft was placed in a straight section of the lumen prior to stent graft deployment.Insufficient flushing of the device could be another contributing factor.Reportedly, the system was flushed prior to use.A manufacturing related root cause was also considered.As no sample returned a manufacturing related cause could be not verified.Based on the information available and as no sample returned a definite root cause for the reported failure could not be determined.The ifu states: "prior to loading the endovascular system over a guide wire, both ports must be flushed with sterile saline (.).Flushing these lumens will also facilitate stent graft deployment." also the ifu states: "the safety and effectiveness of the device when placed across a tight bend including the terminal cephalic arch (¿) has not been evaluated.¿ , ¿prior to stent graft deployment, ensure that the proximal (inflow) stent graft end is positioned in a straight section of the lumen to reduce the risk of higher deployment forces and possible endovascular system failure" and "do not kink the delivery catheter or use excessive force during delivery to the target lesion." furthermore, the ifu states that if unusual resistance or high deployment force is encountered during stent graft deployment, abort the procedure, remove the delivery system and use an alternative device.
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