Visual analysis was performed on the returned device.The reported pressure signal drift was unable to be confirmed due to the condition of the returned product.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 revealed no other similar complaints for reported from this lot.The investigation was unable to determine a cause for the reported pressure signal drift.Although the noted damage to the pressurewire of bends/kinks and separations may have contributed to the signal issues, information from the account regarding when the excessive damage occurred was not provided and therefore a definitive cause for the difficulties could not be determined.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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It was reported that the pressurewire x, wireless device was calibrated and equalized.However, a drift was noted immediately following equalization.The transmitter light was blinking orange [yellow].Troubleshooting was performed, but the issue continued.Therefore, the device was removed and a new pressurewire x, wireless was used to complete the procedure.There were no reported patient adverse effects and no clinically significant delay in the procedure.No additional information was provided.The return device analysis revealed that the proximal male connector area, corewire, and microcable(s) were separated 3.5cm distal to the proximal end of the pressure wire.No additional information was provided.
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