The companion driver caddy was not in use by a patient.The companion driver caddy is a small cart with wheels into which the companion 2 driver docks.It is designed to facilitate mobility of stable patients while in the hospital.The caddy can be plugged into external wall power to provide a redundant power source to the docked companion 2 driver.The customer reported that the locking mechanism on the companion caddy does not work anymore.The customer also reported that the companion driver caddy has a flat tire.The companion caddy was returned to syncardia for evaluation.Inspection of the companion caddy's exterior revealed that the tire on the left wheel was not fully inflated and exhibited a slow leak, and the release plunger assembly was difficult to move, thus confirming the customer-reported issues.The root cause of the tire on the left wheel not being fully inflated is most likely the result of normal wear.The malfunction of the release plunger assembly was previously investigated, which identified the root cause to be the result of friction between the interacting metal components of the release plunger assembly.These failure modes pose a low risk to a patient because the companion caddy was not in patient use at the time of the customer-reported issues; therefore, there was no patient impact.The companion 2 driver operates independently from the companion caddy and would have continued to provide its life-sustaining functions.The companion 2 driver could also be docked into another caddy or hospital cart and continue to provide its life-sustaining functions.After replacement of the wheels and release plunger assembly, the companion caddy met the performance testing.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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