Device and methods for body fluid flow control in...

Surgery – Blood drawn and replaced or treated and returned to body – Constituent removed from blood and remainder returned to body

Reexamination Certificate

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C604S004010, C604S005010, C604S006100, C210S739000, C417S277000, C417S475000

Reexamination Certificate

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10399128

ABSTRACT:
Disclosed are devices and methods for the control of body fluid flow in the extracorporeal treatment of body fluid. Body fluid flow through on of a body fluid flow circuit (10, 50, 60, 100or250) is controlled by alternating applying vacuum pressure and positive pressure to the circuit through a pumping chamber (30, 51, 66, 102, or200) coordinated with flow control valves (40, 42, 44, 62, 114, 116, 118, and120) to effect a net downstream flow of body fluid through the circuit.

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