| 摘要 |
The present invention provides an implantable, artificial ventricular assist device and system employing an undulation pump and methods for the use thereof. The undulation pump has a toroidal-shaped pump chamber with two angled side walls, an arc-shaped outer wall, an inlet port, an outlet port, and an inner circumferential opening and an undulation disk with a diameter that extends to about the arc-shaped outer wall of the pump chamber. The device includes a circumferential, flexible inner wall membrane covering the inner circumferential opening and least one surface of the undulation disk and forming liquid-tight seals to the pump chamber, or alternatively a precession assembly with inner bearings connected in series with an anti-rotation assembly, the anti-rotation assembly disposed within the pump and connected to the undulation disk, and preferably both, and a motor in connected communication with the precession assembly so that the disk undulates when motive force is applied. |
