TY - GEN
T1 - MR-Conditional Robotic Actuation of Concentric Tendon-Driven Cardiac Catheters
AU - Wang, Yifan
AU - Qiu, Zheng
AU - Tokuda, Junichi
AU - Schmidt, Ehud J.
AU - Kolandaivelu, Aravindan
AU - Chen, Yue
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - Atrial fibrillation (AF) and ventricular tachycar-dia (VT) are two of the sustained arrhythmias that significantly affect the quality of life of patients. Treatment of AF and VT often requires radiofrequency ablation of heart tissues using an ablation catheter. Recent progress in ablation therapy leverages magnetic resonance imaging (MRI) for higher contrast visual feedback, and additionally utilizes a guiding sheath with an actively deflectable tip to improve the dexterity of catheter ma-nipulation inside the heart. This paper presents the design and validation of an MR-conditional robotic module for automated 6-degrees-of-freedom actuation of both the ablation catheter and the sheath. The robotic module features a compact design for improved accessibility inside the MR scanner bore and is driven by piezoelectric motors to ensure MR-conditionality. The combined catheter-sheath mechanism is essentially a concentric tendon-driven continuum robot and its kinematics is modeled by the constant curvature model for closed-loop position control. Path following experiments were conducted to validate the actuation module and control scheme, achieving < 2 mm average tip position error with closed-loop control and online shape fitting.
AB - Atrial fibrillation (AF) and ventricular tachycar-dia (VT) are two of the sustained arrhythmias that significantly affect the quality of life of patients. Treatment of AF and VT often requires radiofrequency ablation of heart tissues using an ablation catheter. Recent progress in ablation therapy leverages magnetic resonance imaging (MRI) for higher contrast visual feedback, and additionally utilizes a guiding sheath with an actively deflectable tip to improve the dexterity of catheter ma-nipulation inside the heart. This paper presents the design and validation of an MR-conditional robotic module for automated 6-degrees-of-freedom actuation of both the ablation catheter and the sheath. The robotic module features a compact design for improved accessibility inside the MR scanner bore and is driven by piezoelectric motors to ensure MR-conditionality. The combined catheter-sheath mechanism is essentially a concentric tendon-driven continuum robot and its kinematics is modeled by the constant curvature model for closed-loop position control. Path following experiments were conducted to validate the actuation module and control scheme, achieving < 2 mm average tip position error with closed-loop control and online shape fitting.
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U2 - 10.1109/ISMR63436.2024.10585987
DO - 10.1109/ISMR63436.2024.10585987
M3 - Conference contribution
AN - SCOPUS:85199760461
T3 - 2024 International Symposium on Medical Robotics, ISMR 2024
BT - 2024 International Symposium on Medical Robotics, ISMR 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 International Symposium on Medical Robotics, ISMR 2024
Y2 - 3 June 2024 through 5 June 2024
ER -