The device returned for analysis.All available information was investigated and the loss of fluid column (leak) could not be confirmed via returned device analysis.A review of the lot history record revealed 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 complaints reported from this lot.The investigation was unable to determine a conclusive cause for the loss of fluid column (leak).There is no indication of a product issue with respect to manufacture, design, or labeling.
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