Visual, functional, and electrical analysis was performed on the returned device.The reported signal calibration failure was confirmed as the pressurewire would not connect with the quantien system.Electrical testing revealed open circuits located within the proximal region of the wire.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 determined that the reported difficulty was due to circumstances of the procedure.It is likely that damage to the microcable occurred during preparation resulting in the open circuit found within the proximal region of the wire.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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