The invention relates to the experimental medicine. The apparatus comprises a stand, on which a vertically arranged pressure gauge and a disposable medical syringe. Cannula attached to a syringe tube, which through a rubber stopper with two needles connected to the venous and arterial cannulas. At the working end of the piston of the syringe has an opening through which the second polyvinyl pipe is rigidly attached to the piston rod along its entire length, connected to a manometer and ending with an outlet valve.
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