title: A tether-free, moving actuator total artificial heart.
abstract: An electromechanical moving-actuator TAH was developed and implanted for 5 days in a calf experiment. The efficiency and durability were further improved using pendulous motion of the actuator. This new pendulum pump has a circular motion produced by gear mechanisms connected to the motor. It has a height (from valves to housing bottom) of 7 cm and centrally directed inlets and outlets for good fittability. Active filling (-10 mmHg) inside inner blood sacs was produced by the suction effects of the outer sacs attached to a moving actuator. Two acute animal experiments were performed using the pendulum pump with a Coridale sheep (50 kg weight), and a male calf (70 kg weight). A test was made of 30 minutes of tether-free operation of the implanted pendulum pump inside the small chest of the calf. The pump shows the engineering feasibility of the implantable electrical TAH inside a human chest cavity.
authors: Department of Biomedical Engineering, College of Medicine, Seoul National University, Korea.
authors: B G
authors: BG
authors: Min
authors: H C
authors: HC
authors: Kim
authors: S H
authors: SH
authors: Lee
authors: J K
authors: JK
authors: Chang
authors: J W
authors: JW
authors: Choi
authors: J W
authors: JW
authors: Kim
authors: K P
authors: KP
authors: Seo
authors: J R
authors: JR
authors: Rho
authors: H
authors: H
authors: Ahn
authors: S W
authors: SW
authors: Kim
mesh_terms: D000818:Animals; D001794:Blood Pressure / Q000502:physiology; D002417:Cattle; D004867:Equipment Design; D006354:Heart, Artificial; D006439:Hemodynamics / Q000502:physiology*; D008297:Male; D008955:Models, Cardiovascular