Patent ID: 6706008
Filing Date: 2004-03-16
Classification: A61M

Abstract:
An automated system for withdrawing a selected compound from the blood of a patient comprising:(a) a sterile, pre-assembled, disposable fluid circuit comprising: (i) means for withdrawing blood from a patient, (ii) a separation chamber in flow communication with said withdrawing means, said separation chamber including a first sub-chamber for separating a blood component from blood, (iii) a container containing a solvent adapted for extracting a selected compound from said blood component to provide a compound-depleted blood component, (iv) means for combining said solvent with said blood component, (v) said separation chamber having a second sub-chamber for separating the combination of said blood component and said solvent into a first phase which substantially comprises said compound-depleted blood component and a second phase which substantially comprises said solvent and said compound, (vi) solvent removal means for removing solvent from said compound depleted component, (vii) a flow control cassette having pre-formed flow path segments therein separated by valve stations for controlling communication between said flow path segments and inlet and outlet ports for communicating fluid through said fluid circuit, and (viii) means for returning said compound-depleted blood component to said patient; (b) a re-usable module adapted to cooperatively receive said fluid circuit, said re-usable module including: means cooperatively associated with said separation chamber for effecting separation of said blood component from the remainder of said blood; and means for cooperating with said valve stations to control the flow of fluid through said pre-formed flow paths of said cassette.