The customer reported that the companion 2 driver exhibited sudden drops in fill volumes while supporting a patient at the (b)(6).The customer also reported that the patient was subsequently switched to the backup companion 2 driver.There was no reported adverse patient impact.The companion 2 driver was returned to syncardia for evaluation.Visual inspection of the driver's internal components revealed no anomalies.The patient file was copied and reviewed, revealing no anomalies that would indicate a malfunction of the driver.During investigation testing, the left and right fill volumes were shown to be stable with no sudden fluctuations observed.Therefore, the root cause of the customer-reported issue could not be determined.It is possible that the reported fill volume changes were related to the patient's condition.The driver performed as intended, and there was no evidence of a device malfunction.Despite the customer-reported drop in fill volumes, risk to the patient was low because the driver continued to perform its life-sustaining functions, and the customer reported that there was no adverse impact to the patient.The companion 2 driver was serviced and passed all functional and performance testing before being placed into finished goods.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.
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