Single needle alternating flow blood pump system

Details Single needle alternating flow blood pump system Single needle alternating flow blood pump system

1974-06-24

1976-02-17

Vrablik, John J.

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

417412, 417477, 251 9, F04B 4900, F04B 4308, F04B 4312, F04B 4506

Patent

active

039389090

ABSTRACT:
A blood pump system, typically employed in dialysis, includes a blood pump for withdrawing blood via a single hypodermic needle and valve means operated in synchronism therewith for returning treated blood via the same hypodermic needle. The operation of the blood pump is cyclically interrupted and the valve means opened for the alternate withdrawal and return of blood.

REFERENCES:
patent: 1988624 (1935-01-01), Kipp
patent: 3723030 (1973-03-01), Gelfard
patent: 3726613 (1973-04-01), Casimir
patent: 3791767 (1974-02-01), Shill

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