Visual analysis was performed on the returned device.The reported event of signal calibration failure could not be confirmed due to device conditions.Functional testing and electrical testing could not be performed due to corrosion at the male connector area and separation at the distal tube; however, it was still held together by the corewire.There is no information reported that indicates the separation occurred during the procedure.However, the noted damages such as bend/kink, bunched material, twisted material, and separation at the distal tube is likely due to the circumstances of the procedure.It is likely that during the preparation, the pressurewire was attempted to be inserted into a device accessory (ie.Introducer needle) with difficulty which could be caused by the device accessory itself.As a result, the pressurewire is likely to be removed with difficulty which could lead to separation, bunched material, and other noted damages.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 indication of a lot specific product quality issue.The investigation was unable to determine a cause for the reported signal calibration failure.However, it is likely that the reported issue was related to the noted damages.It is likely that the noted damages caused an intermittent open circuit which could cause the reported signal calibration failure; 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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