(b)(4).Evaluation summary: visual and functional inspections were performed on the returned device.The reported difficulties were not confirmed.The returned unit was inflated to 14 atmospheres with no anomalies noted.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.The investigation was unable to determine a cause for the he reported difficulties.It may be possible that the connection between the inflation device and omnilink elite luer was not properly connected or the inflation device was not working properly; however, this could not be confirmed.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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