Shedding A Tiny Light On Head Injuries
A sensor no bigger than Abraham Lincoln's eye on a penny has been developed by InnerSpace Medical in Irvine, Calif., to measure pressure within the brains of head-trauma victims. The sensor consists of a silicon disk and a shallow glass cup that reflect light back up an optical fiber. A minute pressure increase squeezes the disk and cup together, changing the color of light that they reflect. An outside monitor reads the color change as a change in pressure.
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