Patent ID: 7087036
Filing Date: 2006-08-08
Classification: A61M,F04B,H05B,Y10S,Y10T

Abstract:
1. A system 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, the cam arrangement comprising: a disposable cassette including the supply valve, the drain valve, the from-patient valve and the to-patent valve; a camshaft; and a series of cams connected to the camshaft, the cams 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.