REVERSING FLOW BLOOD PROCESSING SYSTEM HAVING REDUCED CLOTTING POTENTIAL

摘要

A tubular set is provided for use with extra-corporeal treatment of blood comprising a flow reversing valve (25) having a patient arterial line (26), a patient venous line (34), a unit arterial line (28), and a unit venous line (32) each separately connected to the respective sides of the valve. The patient arterial line connects with the unit arterial line in a first position of a valve, and the patient venous line connects with the unit venous line in the same first valve position. The patient arterial line connects with the patient venous line in a second position of the valve, while the patient venous line connects with the unit arterial line in the same second valve position. The flow reversing valve is movable between the first, and second positions (Fig. 4) by relative rotation of part of the valve, and adjacent portions of the respective lines.