Implanted in the position of aortic valve,DAV can serve as either a n assistant pump or a mechanical valve subjected to the power input.

• 将一螺旋浆式叶轮植入到主动脉瓣位置主动旋转，在输入不同功率的条件下分别发挥机械性瓣膜或辅助性血泵两种不同的功能。