(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).It is indicated that the device is not returning for evaluation; therefore a failure analysis of the complaint device could not be completed.The investigation determined the reported difficulties, patient effects and treatment appear to be related to circumstances of the procedure.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 from this lot.It should be noted that the trek rx instructions for use warns: balloon pressure should not exceed the rated burst pressure.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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