(b)(4).Visual and dimensional inspections were performed on the returned device.The reported separation was confirmed.The reported resistance with the balloon catheter could not be replicated in a testing environment as it was based on operational circumstances.It was reported that force was used, which resulted in the shaft separating.It should be noted coronary dilatation catheters, nc trek rx, instruction for use states: if resistance is felt, determine the cause before proceeding.Continuing to advance or retract the catheter while under resistance may result in damage to the vessels and / or damage / separation of the catheter.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.The investigation determined the reported separation and resistance with the balloon catheter appears to be related to circumstances of the procedure.Based on the information reviewed, there is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported that the procedure was to treat a patient that presented with an acute st myocardial infarction.The lesion was located in the narrow and concentric left anterior descending artery.A kissing balloon technique was being used.When the 3.5 x 15 mm mini trek balloon was advanced it met resistance with the other balloon catheter, force was used, which resulted in the proximal shaft separating.The separated device was removed from the patient without issue or adverse patient effects.The first balloon catheter was left in place and another balloon catheter was used successfully with this same balloon to complete the case without further issue.No adverse patient effects or clinically significant delay in the procedure were reported.No additional information was provided.
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