Redefining flow measurement in centrifugal pump: the case for RPM and power consumption-based estimation

Mechanical circulatory support (MCS) devices, particularly those utilizing centrifugal pumps (CP), are crucial in sustaining patients with severe cardiac conditions. Traditional flowmeters, integral to these systems, present considerable challenges, including substantial physical bulk, complex wiring, and a dependency on robust backup systems. These challenges become acute in portable applications, where compact, reliable, and discrete solutions are essential for enhancing patient mobility and quality of life. This paper proposes a strategic shift towards integrating RPM (Revolutions Per Minute) and power consumption-based flow estimation as a standard in MCS device design. This approach reduces device complexity, enhances reliability, and diminishes the need for invasive hardware, aligning with broader goals of patient safety and device efficiency. By adopting RPM and power consumption-based estimation, MCS devices can achieve improved ergonomics, fail-safe operational integrity, and enhanced energy efficiency, which are crucial for achieving patient-centric outcomes. This advancement signals a move towards more intelligent, adaptive medical devices that could redefine standards in mechanical circulatory support.