Currently, there does not exist any artificial organ that could fully replace a transplanted organ. All forms of dialysis treatment are an inferior function a kidney transplant, although dialysis is in itself a form of life saving treatment.
Heart pumps can be used and their durability and safety has improved. Many have been used and tested for several years now, though heart pumps are still considered to be a ‘bridge’ to a heart transplant. For all other organs there is exits no other ‘artificial’ treatment.