Three-Dimensional Passivity-Based Dynamic Control for Tendon-Driven Catheters

This paper presents a three-dimensional dynamic model for active catheters commonly implemented in cardiac ablation, and introduces nonlinear closed-form model-based control scheme. The dynamic model includes rotational, translational and bending effects, moreover entails simple formulation to be implemented in real-time clinical application. Then, Lyapunov-based position control strategy is developed to locate the catheter tip at the desired position. Results verify the viability of the introduced approach for its applicability in robot-assisted cardiac ablation.