Capturing Millisecond-Level Hemodynamic Transients: Applications of Ultrasonic Flow Meters in Medical Pulsatile Flow Testing
In the human circulatory system, blood flow differs significantly from the steady-state flow found in industrial pipelines. Driven by the rhythmic contractions and relaxations of the heart, blood flow naturally exhibits pronounced pulsatile characteristics, with its velocity, pressure, and flow rate undergoing periodic changes at the millisecond level. In the research, development, and validation of medical devices such as artificial heart pumps, heart valves, extracorporeal circulation (ECMO) systems, and hemodynamic simulation tests, the ability to accurately replicate and precisely measure these dynamic pulsatile waveforms is crucial for evaluating the device’s hydraulic performance and safety. However, traditional mechanical sensors often possess significant rotational inertia and damping effects, making it difficult for them to track the rapidly changing instantaneous signals of pulsatile flow.









