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: based on the evaluation of the returned sample the reported deployment failure could be confirmed.The stent graft was found partially deployed and the outer sheath was found to be elongated which indicated that high release force was present during the deployment attempt.Also during evaluation testing the stent graft could not be deployed further.No indication for a manufacturing related issue could be found.As a result of the investigation performed the complaint is confirmed.A definite root cause for the reported event could not be determined.Labeling review: in reviewing the valid labeling for this product it was found that the instructions for use (ifu) sufficiently address the potential risks.Regarding preparation of the device 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." 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".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." expiry date: dec / 2020.
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It was reported that the endovascular stent graft allegedly would not deploy in the left upper arm via a mid/upper arm access site.Reportedly, multiple attempts were made to deploy the stent graft, but were unsuccessful.The delivery system was removed and exchanged over the guidewire for another (same size and length) without incident and the procedure was completed.There was no reported patient injury.
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