The lot history records have been reviewed with special attention to the manufacturing and inspection of this product.The device was found to have met specifications prior to shipment.No manufacturing anomalies were identified that may have caused or contributed to the reported event.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 was provided for evaluation.Based on photos provided it could be confirmed that the outer sheath was torn off.No indication was found for a manufacturing related issue.Therefore, the reported failure could not be reproduced and the investigation will be closed with inconclusive result.Potential factors which may have contributed to the reported issue have been considered.Therefore previous investigations of similar complaints have been reviewed.The event may have been associated with difficult anatomic conditions, which led to increased friction during deployment and subsequent sheath fracture.Insufficient flushing of the device could be another contributing factor for the reported event.Based on the information available and the evaluation of the sample returned, a definite root cause for the reported event could not be determined.In reviewing the labeling supplied with this product it was found that the instructions for use (ifu) sufficiently address the potential risks.Regarding preparation of the device the ifu states that "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." in this case the system was flushed prior to use.Regarding the anatomy of the placement site the ifu states: "the safety and effectiveness of the device when placed across a tight bend (.) 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." reportedly, the anatomy was not calcified or tortuous.Furthermore, the ifu states: "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." the information provided by bard represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant/reporter was unable or unwilling to provide any further patient, product, or procedural details to bard.
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