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(b)(4).Evaluation summary: visual, dimensional and functional inspections were performed on the returned device.The reported deflation issue was not confirmed.There was no report of any damage noted to the balloon dilatation catheter (bdc) during preparation prior to use, which suggests that a product quality issue did not contribute to the reported complaint.In this case, a conclusive cause for the reported deflation issue could not be determined as the reported complaint could not be confirmed during return analysis.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 from this lot.There is no indication of a product quality issue with respects to the design, manufacture, or labeling of the device.
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