Design and Evaluation of a Magnetic Rotablation Catheter for Arterial Stenosis

Arterial stenosis is a high-risk disease accompanied by large amounts of calcified deposits and plaques that develop inside the vasculature. These should be reduced to improve blood flow. However, current methods used reduce require externally controlled actuation systems resulting in limited workspace or patient risks. This results an unexplored preference regarding revascularization strategy for symptomatic artery stenosis. In this article, we propose novel internally actuated solution: magnetic spring-loaded rotablation catheter. The catheter developed achieve stenosis-debulking capabilities actuating drill bits using two internal electromagnetic coils reciprocating shaft. state-space model validated comparing simulation fields with experimental fabricated prototype. Contact forces tip are measured experimentally, maximum axial force 2.63 N torque 5.69 mN-m. Finally, present interventions which inserted reach vascular target site demonstrate plaque-specific treatment different detachable actuator bits. Calcified debulked visualized via ultrasound imaging. can cross-sectional area up 35%, indicating potential lesions, could prevent restenosis.