Flow controlled blood pump system

Details Flow controlled blood pump system Flow controlled blood pump system

2003-03-03

2008-10-14

Freay, Charles G (Department: 3746)

Pumps

Condition responsive control of pump drive motor

With condition responsive control of pump fluid valve

C417S044110, C417S295000

Reexamination Certificate

active

07435059

ABSTRACT:
A system for pumping blood to assist or assume the cardiac function of a patient is characterized by a blood pump that exhibits a steep performance curve such that only small changes in pump flow occur for large changes in differential pressure across the pump. The pump therefore exhibits flow-limiting characteristics to protect the physiological system against harmful flow rates or pressures. Pump flow may also be limited by controlling the current provided to a driver from a power supply or by suitable restrictions within or external to the pump housing.

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