High-frequency transvalvular axisymmetric blood pump

Details High-frequency transvalvular axisymmetric blood pump High-frequency transvalvular axisymmetric blood pump

A - Human Necessities

61

M

128/82

A61M 1/10 (2006.01) A61M 1/12 (2006.01)

Patent

CA 1328790

ABSTRACT A high-frequency transvalvular blood pump for temporary cardiac assist provides suction to decompress the ventricular cavity during both systole and diastole. The intake end of the pump is connected to a cannula which is inserted into the ventricular cavity through the aortic valve, and which has an intake opening at its distal end . The intake and outflow ends of the pump are closed, respectively, by one-way valves which allow blood flow only in the direction of body perfusion. The pump itself consists of a stiff barrel whose interior volume can be alternately reduced and expanded by a flexible membrane controlled by pneumatic or hydraulic pressure from extracorporeal means through percutaneously inserted lumen.

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