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Published September 2005 | Published
Book Section - Chapter Open

Integrated Flexible Ocular Coil for Power and Data Transfer in Retinal Prostheses


A microfabricated and fully-implantable coil for use as a power and data transfer component for retinal prostheses is presented. Compared with traditional hand-made ocular coils, this parylene-based device is thin and flexible with 10 turns of thin-film metal wires and a thickness of less than 10 µm. In addition, the entire coil structure can be heat-formed on a mold to match the eye's curvature for extraocular implantation. Because it is made using parylene thin-film technology, this coil can be directly integrated with multielectrode arrays and with parylene-based packages incorporating application specific integrated circuits (ASICs) or discrete electrical components such as chip capacitors. This coil thus enables the fabrication and implantation of a fully microfabricated system for retinal prostheses.

Additional Information

© 2005 IEEE. Date of Current Version: 10 April 2006. This work was supported in part by the Engineering Research Center Program of the National Science Foundation under Award Number EEC-0310723 and by a fellowship from the Whitaker Foundation (D.R.). The authors would also like to thank Mr. Trevor Roper and other members of the Caltech Micromachining Laboratory for assistance with fabrication.

Attached Files

Published - Li2005p94982005_27Th_Annual_International_Conference_Of_The_Ieee_Engineering_In_Medicine_And_Biology_Society_Vols_1-7.pdf



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