(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: visual and functional inspections were performed on the returned device.The reported folded (bunched) balloon was confirmed.The reported difficulty removing the device from the guiding catheter could not be replicated in a testing environment due to the condition of the returned device.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 similar incidents from this lot.The investigation determined the reported difficulties appear to be related to operational context.There is no indication of a product quality issue with respects to the design, manufacture, or labeling of the device.
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It was reported that an nc trek advanced to the left anterior descending (lad), moderately calcified lesion and inflation was performed without issue for post dilatation of an unspecified stent.During deflation, the balloon could fully deflate; however, the balloon had folded unusually, best described as bunched at the end of the balloon.Following, resistance was met removing the nc trek through the guide catheter.There were no adverse patient effects and there was no clinically significant delay.There was no additional information provided regarding this issue.
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