A 35-year-old California man is walking around today with a total artificial heart as he waits for a heart transplant, his physicians say. Chad Washington underwent a 7-hour transplant surgery at the Ronald Reagan University of California, Los Angeles, Medical Center Oct. 29 that replaced his heart with an the SynCardia Temporary Total Artificial Heart -- a temporary pump that will act as a \"bridge\" until Washington receives a donor heart. Dr. Murray Kwon, an assistant professor of cardiothoracic surgery, said historically, patients with a total artificial heart had to remain hospitalized while they awaited a transplant because they were tethered to a large machine to power the device. \"Today, however, this device can be powered by advanced technology small enough to fit in a backpack, Kwon said in a statement. Washington, an aspiring chef who is married and has a 4-year-old son, has suffered from heart disease since he was born and has had a series of heart-repair surgeries and pacemakers implanted. Dr. Mario Deng, a professor of cardiology and medical director of the UCLA Advanced Heart Failure/Mechanical Support/Heart Transplant Program, said since the pump\'s energy source is portable, Washington can go home and resume normal activities with his family while he waits for a new heart. \"This ability to be at home with family is an important element in helping the patient to maintain a positive outlook during the waiting period,\" Deng said.