Physiologically Responsive Design
Blood Flow Based on Activity Level
The SynCardia temporary Total Artificial Heart (TAH-t) is the only approved device that pumps up to 9.5 L/min through each ventricle. The unique partial fill/full eject design of the SynCardia TAH-t allows the patient’s body to regulate blood flow based on activity level.
The Total Artificial Heart is implanted with a blood flow based on the needs of the patient’s body at rest. The two artificial ventricles partially fill and then fully eject the amount of blood returned to the heart by the body.
During exercise, increased muscle and body movement causes more blood to enter the ventricles. The ventricles can fill with up to 30% more blood. There is no need to adjust the heart rate because the body determines the amount of blood the Total Artificial Heart pumps.
Source: “The SynCardia CardioWest™ Total Artificial Heart.” Slepian MJ, Smith RG, and Copeland JG. [In] Baughman and Baumgartner eds., Treatment of Advanced Heart Disease, Chapter 26, Taylor and Francis, 2006, p. 473-490.
The SynCardia temporary Total Artificial Heart (TAH-t) is elegant by design. It has just six moving parts inside the body. Each ventricle has an inflow valve, an outflow valve and a diaphragm that pumps blood. No other long-term cardiac mechanical assist device is more reliable than the SynCardia Total Artificial Heart.
No Internal Electronics
Because of its unique design, the Total Artificial Heart doesn’t require sensors, motors or electronics of any type inside the body. There is never a need to re-operate to repair faulty electronics. The only electronics needed are located outside of the body in the pneumatic driver, which powers the Total Artificial Heart and monitors blood flow.
No Surgical Pocket
The SynCardia TAH-t replaces the same parts as a heart transplant, so it doesn’t require a surgical pocket. The SynCardia Heart fits into the space of the two removed dying ventricles and four heart valves. Other mechanical-assist products often require a surgical pocket to be created inside the body to provide space for these devices.