Artificial heart newer versions, such as the Heartmate II, developed by The Texas Heart Institute of Houston, provide continuous flow. These pumps (which may be centrifugal or axial flow) are smaller and potentially more durable and last longer than the current generation of total heart replacement pumps. Another major advantage of a VAD is that the patient keeps the natural heart, which may still function for temporary back-up support if the mechanical pump were to stop. This may provide enough support to keep the patient alive until a solution to the problem is implemented. In August 2006, an artificial heart was implanted
Ray Liotta guest appearance on the "SpongeBob SquarePants" episode "What Ever Happened to SpongeBob?"; in the episode, he voices the leader of a gang called the Bubble Poppin’ Boys, who try to kill an amnesiac SpongeBob (voiced by Tom Kenny) because bubble blowing is illegal in New Kelp City, but they get blown away by him, and SpongeBob becomes the new mayor of the city; the episode also had Liotta work with another legendary actor, Clancy Brown, who voices Mr. Krabs on the show, although their characters don’t share any screen credit. He also appeared in "Crossing Over", co-starring Harrison Ford. Liotta