This device is not a substitute for a transplanted heart, but it givers the patient extra time before a transplanted heart becomes available.
Artificial hearts were, until now, extremely cumbersome hospital-bound devices. Whilst I am not a medical expert, it seems t this untrained eye that this option gives everyone involved - patient, doctors, family - some clearance time.
Well done ! And I do hope that he long continues to enjoy his mum's cooking.