Fluid pump

Details Fluid pump Fluid pump

2007-07-03

2007-07-03

Zalukaeva, Tatyana (Department: 3761)

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

C604S006100, C604S067000, C422S044000, C623S003110, C623S003190, C600S016000, C417S437000, C417S412000

Reexamination Certificate

active

10372023

ABSTRACT:
A pumping system10provides a physiological pulsatile flow and includes controller121, a pump drive head50coupled to a motor12and a fluid housing52having at least one port60. The port60includes a ball valve retainer region69, a valve seat73, and an occluder ball71disposed in the ball valve retainer region69. During operation, the motor12forces the fluid in and out the fluid housing52and causes the occluder ball71to move from a first position whereby the fluid cannot pass through the port60, to a second position whereby the fluid moves annular to and generally around the occluder ball71. This movement creates a slight flow reversal that “breaks up” any blood clots that may form. The pumping system may be used as part of a cardiopulmonary bypass system, a ventricular assist device (VAD) and/or a heart pump.

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