| 摘要 |
A method and apparatus for the multiple passage of fluids through a treatment unit (e.g. a medical apheresis unit). The apparatus includes primary and secondary vessels. Connected to the primary vessel is a first conduit which terminates at the treatment unit outlet, and a second conduit which terminates at the treatment unit inlet. Connected to the secondary vessel is a third conduit which terminates at the treatment unit inlet, and a fourth conduit which terminates at the treatment unit outlet. In use, a clamp is simultaneously secured to the first conduit and second conduit prior to filling the primary vessel with fluid (e.g. bone marrow). The clamp is then removed and placed on the first conduit and the third conduit simultaneously so that fluid flows from the primary vessel, into the treatment unit, and into the secondary vessel. The clamp is then removed and positioned on the second conduit and the fourth conduit simultaneously so that fluid flows from the secondary vessel, through the treatment unit, and back into said primary vessel, thereby completing two passes of fluid through the treatment unit using a single clamp. Additional passes may be accomplished by repeating the foregoing steps. Also, conduit attachment members or clamp position indicating members may be applied to the conduits to facilitate proper use of the entire system.
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