#$%^&*AU2018203358B220191031.pdf#####ABSTRACT The present invention relates to a system for controlled delivery of a medical fluid from a source of such fluid to a patient. The system comprising: an inlet conduit for being communicably joined to a source of the medical fluid； an outlet conduit for being communicably joined to the patient； and a control valve assembly interconnecting the inlet conduit and the outlet conduit. The control valve assembly including: a valve body having aligned inlet and outlet ports, the inlet port being communicably connectable to the inlet conduit and the outlet port being communicably connectable to the outlet conduit. The valve body further including a first intermediate port to which a first syringe may be selectively connected and a second intermediate port to which a second syringe may be selectively connected. The control valve assembly further including a stopcock element mounted rotatably within the body and including a channel consisting only of a first channel segment and a second channel segment, the first and second channel segments being selectively alignable with the inlet port and the first intermediate port to allow for communication between the inlet conduit and the first syringe, the first intermediate port and the second intermediate port to allow for communication between the first syringe and the second syringe, and the second intermediate port and the outlet port to allow for communication between the second syringe and the outlet conduit.
