Flexible Parylene Packaged Intraocular Coil for Retinal Prostheses
Abstract
We present a flexible and fully-implantable coil designed for use as a power and data transfer component in retinal prosthesis applications. Compared with traditional hand-made intraocular coils, this microfabricated coil is flexible, with a 9.5 mm outer diameter and 10-mum-thick parylene C as the primary structural and packaging material. A post-fabrication heat treatment was used to improve the parylene package in order to protect the device in harsh corrosive environments such as the human eye. Long-term accelerated-lifetime soak testing in heated saline has been performed, and the mean time to failure (MTTF) of the parylene package extrapolated to 37°C was estimated using the Arrhenius relationship. The electrical failure of this device was also characterized by measuring the DC resistance in saline.
Additional Information
© 2006 IEEE. Issue Date: 9-12 May 2006, Date of Current Version: 30 July 2007. This work was supported in part by the Engineering Research Centers 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 their assistance with fabrication.Attached Files
Published - Li2006p90382006_International_Conference_On_Microtechnologies_In_Medicine_And_Biology.pdf
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Additional details
- Eprint ID
- 24489
- Resolver ID
- CaltechAUTHORS:20110721-094836263
- EEC-0310723
- NSF
- Whitaker Foundation
- Created
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2011-07-21Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field