(b)(4).The device was not returned for analysis.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 of the reported lot revealed no other similar incidents.The investigation determined that the reported difficulties and subsequent patient effects were due to case circumstances.Reportedly, the unspecified guide lost positioning.On attempting to reposition the guide, contact with the stent was made which resulted in the stent struts flaring and the stent dislodging in the femoral artery.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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