(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The device was not returned for analysis.It is likely that the rupture occurred due to interaction with the lesion site.The separation during removal likely occurred when removing the catheter and the ruptured balloon material caught on the introducer sheath.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 revealed no other incidents.The investigation determined that the reported difficulties and additional treatment to remove the balloon material appears to be due to case circumstances.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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