Manufacturing review: based on the information available and the investigation performed, there is no indication that the product failed to meet its specification prior to shipment.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 the specification prior to shipment.The review shows that no remarkable incidents occurred during the manufacturing process.No relevant manufacturing process changes were implemented that could have led to the event reported.Investigation summary: no device sample was returned for evaluation.An x-ray was provided documenting two stents placed overlapping during post dilation.The balloon was found shorter than the stented segment.Due to poor resolution, and parallax it was impossible to identify the single stents in their entire length.In addition, a length measurement was not possible due to missing scaling information; therefore, the investigation will be closed with inconclusive result.Based on the information available and the evaluation of the x-ray provided, a definite root cause for the reported event could not be determined.Labeling review: in reviewing the relevant labeling for this product it was found that the instructions for use (ifu) sufficiently addressed the potential risks.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'.Correct holding and handling of the system within the procedure was found properly described in the ifu.An image is part of the ifu that demonstrates the nominal stent length without stent markers.In regards to foreshortening the ifu states: 'if a stent graft is oversized per table 1, there will be minimal foreshortening (<10%) of the stent graft during deployment.¿ the alleged issue of stent graft malposition was found mentioned as a potential adverse event that may occur.
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