The device was returned for analysis.There were no reported device issues however return analysis noted a torn guide wire exit notch and multiple bends throughout the hypotube.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history did not indicate a lot specific quality issue.It is possible that manipulation of the device during an attempt to retrieve the noted xience pro a stent implant which was returned mangled on the balloon catheter resulted in the noted torn guide wire exit notch and the noted multiple bends throughout the hypotube; however without any additional information available, a conclusive cause for the reported difficulties could not be determined.The investigation determined a conclusive cause for the reported/noted difficulties cannot be determined.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported during the procedure the indeflator would not maintain pressure more than 4 to 6 atmospheres and kept decreasing in pressure.This caused the unspecified xience pro stent delivery system to not inflate properly and the stent to fold up and become knotted.The entire system was pulled out to ensure the stent was not left behind in the body.There was no adverse patient effects and no clinically significant delay was reported.No additional information was provided.A 1.5x12mm mini trek balloon catheter was received into the return goods lab with the xience pro stent mangled on it which is in line with the initial information received stating "a stent (dislodged) in a patient's radial artery".There was no reported information on the mini trek; however, device analysis revealed a torn notch and a leak.Follow-up with the site was performed regarding the mini trek; however, no additional information was provided.
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