Design and Performance Verification of a Novel Eccentric Rotational Cutting Tool for Removal of Vascular Calcification Tissue

• A novel eccentric rotational cutting tool with staggered micro-blades was designed and fabricated for vascular calcification removal, demonstrating superior performance in force, temperature, and debris size control. • At the highest rotational speed, the tool achieved a maximum force of 0.75 N and a temperature rise of only 1.09 °C, meeting clinical safety requirements. • Debris size followed a normal distribution with 90% of particles smaller than 9.12 μm, reducing the risk of embolic complications. • The study provides a new design concept for calcified tissue removal tools, potentially advancing rotational atherectomy technology.