Keywords: Atherosclerosis, Atherosclerosis, Mechanical ThrombectomyMR angiography provides high resolution visualization of blood vessels for analyzing arterial occlusions. However, these conditions require the use of a guidewire/catheter for treatment. Catheters integrated with microcoils for actuation under the high (3-7 Tesla), uniform magnetic field within magnetic resonance (MR) scanners have enabled mechanical removal of arterial occlusions. This work introduces an electromagnetic rotablation design, allowing direct tip torque control for both steering and drilling. Results demonstrate in vitro rotational thrombectomy with torque outputs up to 12 mN·m under MR guidance. These results indicate the high MRI external field can provide rotablation for difficult-to-reach areas of the vasculature.
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