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(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.A review of the lot history record and complaint history of the reported product could not be conducted because the lot number was not provided.The investigation was unable to determine a conclusive cause for the reported stent dislodgement.The treatment appears to be related to circumstances of the procedure as the dislodged stent was pushed against the artery wall.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.Sus voluntary event report mw5065949.
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