Fail safe system for operating medical fluid valves

Details Fail safe system for operating medical fluid valves Fail safe system for operating medical fluid valves

2006-08-08

2006-08-08

Lucchesi, Nicholas D. (Department: 3763)

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

C604S249000, C251S208000, C137S595000

Reexamination Certificate

active

07087036

ABSTRACT:
A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a cam arrangement for operating a series of valves in cooperation with a pump that pumps fluid to and from a patient, the valves including a supply valve, a drain valve, a from-patient valve and a to-patient valve is provided. The cam arrangement includes a camshaft and a series of cams connected to the camshaft. The cams are positioned and arranged to toggle back and forth between a first open position for the supply valve and a second open position for the drain valve, a third open position for the from-patient valve and the second open position, and the first open position and a fourth open position for the to-patient valve.

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