TY - JOUR
T1 - Triaxial Catheter-Tip Force Sensor for MRI-Guided Cardiac Procedures
AU - Polygerinos, Panagiotis
AU - Seneviratne, Lakmal
AU - Razavi, Reza
AU - Schaeffter, Tobias
AU - Althoefer, Kaspar
PY - 2013/2
Y1 - 2013/2
N2 - This paper presents the development and evaluation of a miniature, three-axis, fiber-optic force sensor. The sensor is manufactured using low-cost, high-resolution rapid prototyping techniques and is integrated with a catheter to enable the detection of force during MRI-guided cardiac ablation procedures. The working principle is based on reflective light-intensity modulation. A force sensitive structure (flexure) is employed to vary the distance and orientation of an integrated reflector when a force is applied at the catheter tip. In this way, the light is modulated accordingly and the force can be calculated. The sensor has a high sensitivity and an adequate linear response along all three orthogonal axes (Fx, Fy, and Fz) and a working range of around 0.5 N. Low-noise, high-gain electronics provide a force resolution of less than 1 gm force. Experiments demonstrate the ability of the sensor to acquire accurate force readings in a dynamic environment. MRI-compatibility experiments are performed in a clinical 1.5-T MR scanner.
AB - This paper presents the development and evaluation of a miniature, three-axis, fiber-optic force sensor. The sensor is manufactured using low-cost, high-resolution rapid prototyping techniques and is integrated with a catheter to enable the detection of force during MRI-guided cardiac ablation procedures. The working principle is based on reflective light-intensity modulation. A force sensitive structure (flexure) is employed to vary the distance and orientation of an integrated reflector when a force is applied at the catheter tip. In this way, the light is modulated accordingly and the force can be calculated. The sensor has a high sensitivity and an adequate linear response along all three orthogonal axes (Fx, Fy, and Fz) and a working range of around 0.5 N. Low-noise, high-gain electronics provide a force resolution of less than 1 gm force. Experiments demonstrate the ability of the sensor to acquire accurate force readings in a dynamic environment. MRI-compatibility experiments are performed in a clinical 1.5-T MR scanner.
U2 - 10.1109/TMECH.2011.2181405
DO - 10.1109/TMECH.2011.2181405
M3 - Article
SN - 1083-4435
VL - 18
SP - 386
EP - 396
JO - IEEE ASME TRANSACTIONS ON MECHATRONICS
JF - IEEE ASME TRANSACTIONS ON MECHATRONICS
IS - 1
M1 - N/A
ER -