Lalande Viviane, Gosselin Frederick P, Martel Sylvain
NanoRobotics laboratory, École Polytechnique de Montréal (EPM), Canada.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:1874-7. doi: 10.1109/IEMBS.2010.5627150.
A catheter is successfully bent and steered by applying magnetic gradients inside a Magnetic Resonance Imaging system (MRI). One to three soft ferromagnetic spheres are attached at the distal tip of the catheter with different spacing between the spheres. Depending on the interactions between the spheres, progressive or discontinuous/jumping displacement was observed for increasing magnetic load. This phenomenon is accurately predicted by a simple theoretical dipole interaction model.
通过在磁共振成像系统（MRI）内部施加磁梯度，导管成功实现了弯曲和转向。在导管的远端附着有一到三个软铁磁球，球之间的间距各不相同。根据球之间的相互作用，随着磁负荷增加，观察到了渐进式或不连续/跳跃式位移。这种现象可以通过一个简单的理论偶极相互作用模型准确预测。
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