Visual analysis was performed on the returned device.The reported failure to equalize was unable to be confirmed due to the condition of the returned pressure 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 revealed no indication of a lot specific product quality issue.The investigation was unable to determine a cause for the reported faulty pressure registration.It may be possible that procedural contaminants/contrast on the pressure sensor membrane or the noted bends/kinks contributed to the reported faulty pressure registration; however, this could not be confirmed.The separations were not reported and may have occurred during post-use handling/packaging for return.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.Na.
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It was reported that the pressurewire x, wireless device was calibrated successfully.After the device was turned on and inserted into the patient's anatomy, there was no pressure signal present and equalization could not be performed.Therefore, the device was removed from the patients anatomy, zeroed again, then re-inserted into the patient's anatomy, but there was no pressure signal present.Therefore, the device was removed and another pressurewire x, wireless device was used to complete the procedure.There were no adverse patient effects and no clinically significant delay in the procedure.*the device return analysis revealed that the corewire, and microcable(s) of the the pressurewire x, wireless device were separated 84.5cm distal to the proximal end of the pressure wire which is in an area introduced inside the patient.No additional information was provided.
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