(b)(4).The device was not returned for analysis.It is likely that the rupture occurred due to interaction with the anatomy or associated devices.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 appear to be due to case circumstances and there is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.
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