The companion 2 driver was returned to syncardia for evaluation.Visual inspection of the exterior components revealed no abnormalities.Review of the electronic patient data file revealed no unusual alarms.Calibration is performed when the companion 2 driver is docked in a companion hospital cart.When performing the touch screen calibration, two options are provided on the touch screen: driver screen calibration and hospital cart screen calibration.If hospital cart screen calibration is selected on the touch screen but the calibration is performed on the driver touch screen, it can affect the hospital cart's touch screen performance.If driver screen calibration is selected on the touch screen but the calibration is performed on the hospital cart touch screen, it can affect the driver's touch screen performance.It is possible that the calibration could have been performed on the touch screen that was different from the touch screen that was selected, resulting in inaccurate calibration data.The reported non-responsive touch screen was confirmed during incoming testing of the driver.The root cause was inaccurate calibration data on the micro sd card.The micro sd card is a secure digital flash memory card used for storing companion 2 driver system information.The calibration data is stored on the sd card and remains until the calibration procedure is reexecuted.In this case, the saved calibration data was inaccurate, and a new calibration could not be performed.The sd card was replaced, and the issue was resolved.The companion 2 driver was serviced and then passed all final performance testing.This failure mode poses a low risk to a patient because the issue was observed when the companion 2 driver was not supporting a patient.In addition, it would not prevent the companion 2 driver from performing its life-sustaining functions.This issue will continue to be monitored and trended as part of the customer experience process.Syncardia has completed its evaluation of this complaint and is closing this file.(b)(4).
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