High-frequency transvalvular axisymmetric blood pump

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

1988-05-03

1990-03-06

Sykes, Angela D.

Surgery

Cardiac augmentation

128DIG3, 417478, 417480, A61M 110

Patent

active

049062298

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 an extracorporeal location through a percutaneously inserted lumen.

REFERENCES:
patent: 3099260 (1963-07-01), Birtwell
patent: 4080958 (1978-03-01), Bregman et al.
patent: 4250872 (1981-02-01), Tamari
patent: 4465063 (1984-08-01), Nielsen et al.
patent: 4625712 (1986-12-01), Wampler

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