(b)(4).Evaluation summary: a visual inspection was performed on the returned device.The reported material deformation was confirmed.The reported failure to deploy could not be tested due to the device condition.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 similar incidents from this lot.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.The investigation determined that the reported difficulties appear to be related to circumstances of the procedure.
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