Fiber-optic bending sensor for cochlear implantation

Enbang Li; Jianquan Yao

doi:10.1117/12.710731

27 October 2006 Fiber-optic bending sensor for cochlear implantation

Enbang Li, Jianquan Yao

Proceedings Volume 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine; 60473N (2006) https://doi.org/10.1117/12.710731
Event: Fourth International Conference on Photonics and Imaging in Biology and Medicine, 2005, Tianjin, China

Abstract

Cochlear implantation has been proved as a great success in treating profound sensorineural deafness in both children and adults. Cochlear electrode array implantation is a complex and delicate surgical process. Surgically induced damage to the inner wall of the scala tympani could happen if the insertion angle of the electrode is incorrect and an excessive insertion force is applied to the electrode. This damage could lead to severe degeneration of the remaining neural elements. It is therefore of vital importance to monitor the shape and position of the electrode during the implantation surgery. In this paper, we report a fiber-optic bending sensor which can be integrated with the electrode and used to guide the implantation process. The sensor consists of a piece of optical fiber. The end of the fiber is coated with aluminum layer to form a mirror. Bending the fiber with the electrode introduces loss to the light transmitting in the fiber. By detecting the power of the reflected light, we can detennine the bending happened to the fiber, and consequently measure the curved shape of the electrode. Experimental results show that the proposed fiber sensor is a promising technique to make in-situ monitoring of the shape and position of the electrode during the implantation process.

Citation Download Citation

Enbang Li and Jianquan Yao "Fiber-optic bending sensor for cochlear implantation", Proc. SPIE 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine, 60473N (27 October 2006); https://doi.org/10.1117/12.710731

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