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(b)(4).The device was not returned for evaluation.The reported patient effect of occlusion is listed in the supera instructions for use as a known potential patient effect associated with the use of the device.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Based on the information reviewed, there is no indication of a product quality issue.Based on the case information and related record review, a conclusive cause for the reported patient effects, and the relationship to the product, if any, cannot be determined.The additional therapy / nonsurgical treatment is due to case circumstances.
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