(b)(4).Evaluation summary: visual inspection was performed on the returned device.The reported separation was confirmed; however, the 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 event and additional treatment appear to be related to circumstances of the procedure.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 during a coronary procedure to treat a target lesion in the right coronary artery, an unspecified stent was implanted.The 5.0 x 8 mm nc trek dilatation catheter was advanced for post dilatation of the stent.An attempt was made to remove the nc trek; however, the device became caught in the guide catheter and separated at a location inside the patient anatomy.A snare device was used to retrieve the separated segment.There were no adverse patient sequelae and no clinically significant delay.No additional information was provided.
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