Airicist
25th June 2015, 18:54
Authors:
Aaron T. Becker (https://pr.ai/showthread.php?11654), Ouajdi Felfoul, Pierre E. Dupont
Airicist
25th June 2015, 18:57
https://youtu.be/KgNT7aVejuA
MRI-powered, self-sssembled, Gauss gun for tissue penetration
Published on May 12, 2015
[Abstract] MRI-based navigation and propulsion of millirobots is a new and promising approach for minimally invasive therapies. The strong central field inside the scanner, however, precludes torque-based control. Consequently, prior propulsion techniques have been limited to gradient-based pulling through fluid-filled body lumens. This paper introduces a technique for generating large impulsive forces that can be used to penetrate tissue. The approach is based on navigating multiple robots to a desired location and using self-assembly to trigger the conversion of magnetic potential energy into sufficient kinetic energy to achieve penetration. The approach is illustrated through analytical modeling and experiments in a clinical MRI scanner.