title: A microfabricated coil for implantable applications of magnetic spinal cord stimulation.
abstract: In this paper, a microfabricated inductive coil comprising of 125-turn coil windings and a MnZn-based magnetic core in a volume of 200 mm(3) is presented for the magnetic neural stimulation in a spinal cord. The coil winding with the parallel-linkage design instead of the typical serial-linkage one is proposed not only to provide better design flexibility to the current mode driving circuit but also to simplify the fabrication process of the 3-D inductive coil, which can further advance the coil miniaturization. Experimental results show the microcoil with a 1.5 A, 1 kHz square-wave current input can induce a voltages of ~220 μV on the conducting wire with an impedance of ~0.2 Ω @ 1 kHz, 1 mm separation.
authors.lastname: Yu-Min Fu
authors.lastname: Che-Yu Chen
authors.lastname: Xin-Hong Qian
authors.lastname: Yu-Ting Cheng
authors.lastname: Chung-Yu Wu
authors.lastname: Jui-Sheng Sun
authors.lastname: Chien-Chun Huang
authors.lastname: Chao-Kai Hu
mesh_terms: D004553:Electric Conductivity; D008280:Magnetics / Q000295:instrumentation*; D055616:Microtechnology / Q000295:instrumentation*; D058117:Neural Prostheses; D013116:Spinal Cord / Q000502:physiology; D062187:Spinal Cord Stimulation / Q000295:instrumentation*