Heart support device

摘要

A heart support device for pulsatile delivery of blood comprising a first and a second ventricle and a pump. Both ventricles comprises a fluid chamber and a blood-conveying chamber, wherein each fluid chamber can be filled with a fluid or emptied by way of the pump in such a way that an expansion or contraction of the fluid chamber occurs. In an expansion of the fluid chamber of a ventricle, a compression of the blood-conveying chamber of the same ventricle takes place, wherein a rigid pressure plate is disposed between a fluid chamber and the respective blood-conveying chamber, said pressure plate being able to move in the direction of the respective blood-conveying chamber.

主权项

1. A heart support device for pulsatile delivery of blood, comprising:
a first and a second ventricle, and a pump, each of said two ventricles comprising a respective fluid chamber and a respective blood-conveying chamber, and each fluid chamber being adapted, with the aid of said pump, to be filled with a fluid or to be evacuated in a manner causing an expansion or contraction of the fluid chamber, an expansion of the fluid chamber of the ventricle resulting in a compression of the blood-conveying chamber of the same ventricle, wherein between the fluid chamber and the corresponding blood-conveying chamber, a respective stiff pressure plate is arranged, said pressure plate being displaceable in the direction toward the respective blood-conveying chamber, and upon expansion of the fluid chamber, a compression of the respective blood-conveying chamber is effected via said pressure plate, wherein said fluid chamber has a base surface which is smaller than a surface of said rigid pressure plate so that, upon expansion of said fluid chamber, a volume of the fluid is smaller than a volume of the conveyed blood.