The CardioWest Total Artificial Heart has the highest bridge to transplant rate of all approved mechanical circulatory support devices, however the main drawback of existing technology is that patients are confined to the hospital while they await a transplant.
Previously the only approved driver for powering the Total Artificial Heart was a 418-lb hospital driver nicknamed “Big Blue”. Now a smaller portable driver, is allowing patients to resume normal activities at home. The Freedom driver weighs only 13.5 lbs including two onboard lithium-ion batteries and a power adaptor. It is designed to be carried by the patient in the Freedom Backpack or Shoulder Bag.
In August 2004, a pivotal clinical study published in the New England Journal of Medicine, showed that 79 percent of patients receiving the CardioWest TAH-t survived to transplant, the highest survival rate for any device.