28 Nov '11, 9pm

Medical sensors in biomedical electronics, part 1: the eye and ear

Medical sensors in biomedical electronics, part 1: the eye and ear

Retinal-prosthesis development can help restore sight to people who have retinal-degenerative diseases, such as macular degeneration, which can cause blindness (Reference 1 ). Researchers doing preclinical implantation studies have verified that these prostheses ultimately assist an eye’s lost functions with an implant, containing a 15-channel stimulator chip, discrete power-supply components, and the power- and data-receiving coils that conform to the outer wall of an eye. In the study, researchers at the Boston Retinal Implant Project implanted an array in the subretinal area of a pig but affixed most of the prosthesis—a titanium, hermetically encased electronics assembly—to the outer surface of the sclera, or the white of the eye. A serpentine electrode array extends from the case to the superior temporal quadrant of the eye (Figure 2 ). The system has an external video...

Full article: http://www.edn.com/article/520122-Medical_sensors_in_biom...

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