Abstract: A ferromagnetic-fluid pump includes a hollow body having a substantially rigid structure and an internal diaphragm dividing said body in two cavities. Each cavity has an inlet and an outlet opening provided with one-way valve. One edge of said diaphragm is hinged on the body structure while its opposite edge is spaced from the adjacent inner surface of said body. Said cavities are partially filled with a ferromagnetic fluid which seals said diaphragm in respect of the inner surface of said body. At least one electric winding is provided onto both sides of said diaphragm and onto the two inner surfaces of said body facing said diaphragm. Said windings are operative to generate a variable magnetic fluid so that said diaphragm oscillates.

Abstract: A total artifical heart prosthesis having a body defining a right ventricle chamber and a left ventricle chamber each provided with an inlet valve and outlet valve, as well as with a flexible membrane dividing each ventricle chamber into a blood-receiving compartment or ventricle proper, and a cardiac function control compartment, in which artificial heart said membranes are urged by a ferromagnetic fluid. Arranged to cooperate with the membranes are electric windings which create magnetic fields producing a sought displacement of the membrane-urging ferromagnetic fluid, i.e. of the membranes themselves. A means is provided for driving the membranes as desired and for powering the electric windings in order to generate the magnetic field.