Motor Drive Circuit for Mechanical Circulatory Support Device Patent Application

USPTO published patent application US20260097195A1 disclosing a motor drive circuit for mechanical circulatory support devices. The application covers methods including generating PWM drive signals, selectively filtering PWM signals for driven motor phases, sensing back EMF signals from undriven motor phases, determining rotor position from back EMF signals, and modifying PWM drive signals based on rotor position. The invention enables sensorless motor control for medical devices like ventricular assist devices.

Medical device manufacturers developing circulatory support systems should monitor this application's progress. If granted, the patent would cover motor drive circuit designs that reduce external sensors by using back EMF sensing for rotor position detection. Companies in the ventricular assist device and mechanical circulatory support market should assess their technology portfolios for potential overlap with these claims.