Date of download: 11/7/2017 Copyright © ASME. All rights reserved. From: Magnetic Guidance of Cochlear Implants: Proof-of-Concept and Initial Feasibility Study J. Med. Devices. 2012;6(3):035002-035002-8. doi:10.1115/1.4007099 Figure Legend: Magnetic force and torque in clinical arrangement of Fig. . The large magnet is the manipulator magnet, with the coordinate frame origin at its dipole center (shown offset for clarity). The implant tip magnet is placed along the manipulator’s rotation axis making M and p orthogonal. Two directions of the implant tip magnet with resulting forces and torques are shown. (a) Negative z-direction (θ=0deg): force in negative y-direction. (b) Negative x-direction (θ=90deg): negative torque about y-axis.