Patent ID: 7306558
Filing Date: 2007-12-11
Classification: A61M,F04B

Abstract:
1. A fluid pressure generating device for a heart assist device having a blood pumping means, the pressure generating device including: a housing, defining an interior volume, and having a substantially rigid first housing portion, a substantially rigid second housing portion, a flexible third housing portion extending between the first and second housing portions and an inlet/outlet port connected to one of said housings and adapted for fluid communication with the blood pumping means, the third housing has an outer surface about its periphery, an inner surface facing the interior of the first and second housing and is joined along the outer edge and the inner edge to the first and second housing portions respectively; a fluid filling the interior volume of the housing; and a motor disposed within the interior volume of the housing and connected between the first and second housing portions, wherein actuation of the motor moves the first and second housing portions relative to one another to generate fluid pressure changes at the inlet/outlet port.