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(b)(4).The device was not returned for evaluation.However, factors that can contribute to a stent appearing oversized/stretched include, but are not limited to, manufacturing, device interactions or anatomical conditions.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 similar incidents reported from this lot.The investigation was unable to determine a conclusive cause for the reported difficulty.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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