A visual and dimensional inspection was performed on the returned device.The reported failure to advance was based on operational circumstances and could not be tested.Additionally, the following was noted on the device: the balloon was tightly folded.The stent implant was stationary on the balloon between the markers.There were stretched, bent and mangled struts in the middle of the stent implant.There was a stretched strut at the proximal end of the stent implant.There were chatter marks on the outer member (om) proximal to the proximal seal.The inner and outer member were stretched distal to the guide wire exit notch.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 identified no other incidents.The investigation determined the reported failure to advance appears to be related to the operational context of the procedure.In this case, it is likely the device interacted with the previously implanted stent during advancement resulting in the reported failure to advance.Further manipulation of the device in addition to interaction with the previously implanted stent during retraction likely contributed to the noted chatter marks on the outer member in addition to the stretched, bent and mangled stent struts and stretched inner/outer member.There is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.
|
It was reported that the procedure was to treat a mildly calcified, de novo, left anterior descending artery (lad).A 3.5x28mm xience alpine drug eluting stent (des) was unable to pass a previously deployed stent in the left-main artery (lm).After 20 minutes, the stent was withdrawn and a same sized, non-abbott device was used to successfully complete the procedure.There were no adverse patient effects and no clinically significant delay in the procedure.Return device analysis noted that the shaft was stretched.No additional information was provided.
|