(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).The device was not returned for evaluation.The investigation determined the reported difficulties appear to be related to anatomical conditions.It should be noted that the nc trek rx instructions for use states: do not use, or attempt to straighten, a catheter if the shaft has become bent or kinked; this may result in the shaft breaking.In this case, the resistance encountered caused the kink and separation.A review of the lot history record revealed no manufacturing nonconformities that would have contributed to this complaint.Additionally, a review of the complaint history identified no other incidents from this lot.Based on the information reviewed, there is no indication of a product quality issue with respect to manufacture, design or labeling of the device.
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It was reported that the procedure was performed to treat a heavily calcified proximal left anterior descending (lad) coronary artery.A 3.5x12mm nc trek rx balloon dilatation catheter (bdc) was advanced with resistance due to the heavy calcification in the entire lad.The physician stated that force was being placed on the bdc to attempt to cross the lesion, and therefore removed the bdc from the patient anatomy without reported issue.Upon removal, the distal shaft was noted to be bent; however, the physician reused the bdc for the procedure.The bdc was re-advanced in the patient anatomy and dilated the target lesion without issue.The balloon was then deflated, and the bdc was removed from the patient anatomy through the guiding catheter without issue; however, after the bdc was removed, the shaft snapped and separated where the bend was noted earlier in the procedure.Another trek bdc was used to further dilate the distal target lesion.There was no adverse patient effect and no clinically significant delay in the procedure.No additional information was provided.
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