Fig. 3From: Outflow monitoring of a pneumatic ventricular assist device using external pressure sensorsMock circulatory system used to evaluate the pump outflow during the in vitro experiment. (① External driving unit, ② ultrasonic blood flow meter (UBF; TS-410, Transonic Systems Inc.) ③ pressure measurement device (MP36; Biopac Inc., Daegu, Korea), ④ outlet chamber used to simulate aortic pressure, ⑤ clamp to simulate the resistance of systemic perfusion, ⑥ the inlet chamber to simulate the left atrial pressure, ⑦ the UBF (PXL Clamp flow sensor; Transonic Systems Inc.), and ⑧ the implanted unit)Back to article page