H10: manufacturing review: a manufacturing review was not requested as the lot number reported is unknown.Investigation summary: the delivery system was returned for evaluation, and it was confirmed that the covered stent was not completely deployed.However, a cause for the partial deployment could not be determined.The slide block inside the delivery system, as well as any other components were found to be intact.No indication for an alleged break, as reported by the customer could be found.Based on evaluation of the sample, it could be confirmed that the covered stent could not be deployed completely.However, a definite root cause could not be determined.Labeling review: in reviewing the relevant labeling for this product, the potential issue was found addressed.Based on the instruction for use supplied with this product delivery system specific events that could be associated with clinical complications include but are not limited to failure to deploy and high deployment forces.Regarding correct deployment the instruction for use states: "maintain a stationary hold on the white stability sheath during covered stent deployment (¿).Hold the white stability sheath as close as possible to the introducer without touching the dark brown moving catheter of the distal catheter assembly.Maintain the remainder of the white stability sheath (.) relaxed and avoid tension." regarding preparation the instruction for use states: "pre-dilate the stenosis with a pta balloon catheter of appropriate length and diameter for the lesion to be treated.".
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