H10: manufacturing review: the lot history record of this lot was reviewed with special attention to the manufacturing and inspection of this product, and the product was found to have met the specification prior to shipment.Investigation summary: the sample was returned for evaluation.Based on the investigation of the returned delivery system, stent was found missing as it was reported.Elongation of the outer sheath was identified which indicates the amount of force that was applied although it will result to inconclusive result for the reported failure code misfire.In this case, the system reportedly was flushed, and the vessel was not tortuous and/ or calcified; the lesion was pre dilated, and the system worked after losing and tightening the tuohy borst valve.There was no difficulty advancing and retracting the system.Based on information available and returned device, the investigation is confirmed for difficulty deploying the stent.A definite root cause for the reported issue can not be determined.Labeling review: in reviewing the relevant labeling it was found that the instructions for use sufficiently address the potential risk.The instructions for use 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.', 'prior to loading the delivery system over a guide wire, both ports must be flushed with sterile saline (.).Flushing these lumens will also facilitate stent graft deployment.', the instructions for use state: '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 'when the stent graft is ready for deployment, open the tuohy-borst valve by turning it counter clockwise (¿)'.H10: d4(expiry date: 01/2022),g3 h11: d4(medical device lot no),h6(method, result and conclusion) h11: section a through f ¿ the information provide by bd represents all 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 bd.H3 other text : see h10.
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