1. Evoked Potential Assessment Device Prevents Arms and Legs from Falling Asleep During Surgery Often during surgery, arms or legs may be in positions for long periods of time. Nerves and blood vessels may be stretched and squeezed, and if a patient’s position is not adjusted in time, permanent tissue damage, compartment syndrome, and other risk factors may occur. SafeOp, a Maryland company has developed The Evoked Potential Assessment Device, which uses SSEPs (somatosensory evoked potentials) to detect abnormal nerve signaling that is indicative of poor patient positioning, to warn clinicians to reposition a patient in need. Additional features include: - Wireless tablet control and display with wired backup - Real waveform data and graphical displays - Integrated neuromuscular junction testing including train of four, single simulation and post-tetanic count - Convenient easy clean, easy place headbox that can be rotated for supine or prone surgeries - Patent pending electro-cautery recognition and removal from averaged signals - Patent Pending distributed ground to reduce stimulus artifact - Single 6 layer board for durability and tight integration of functions - Simple and easy snap-on cable connection - Unified flat lying, fully shielded cables to minimize clutter and block out electrical interference - Easy place and connect surface electrodes that can be setup preoperatively - Separate electrode packages for upper and lower limbs to allow selective monitoring and reduce waste 2. Scientists Use Electric Currents to Herd Collections of Human Cells The top image shows a patch of epithelial cells. The white lines in the middle image mark the electric current flowing from positive to negative over the cells. The bottom image shows how the cells track the electric field, with blue indicating leftward migration and red signaling rightward movement. (Images by Daniel Cohen) New research reported in Nature Materials finds a new technique to herd whole groups of cells to a final location. Using a DC current of five volts per centimeter through epithelial cells, epithelial cells were made to crawl in the direction of an electric current field. In addition to producing artificial tissue constructs, the technology may be used in the future to create more adaptable healing methods for wounds. 3. New Lens Implant Automatically Adjusts Focus of Eye Loss of accommodation, which can result from a number of eye conditions such as presbyopia, makes the person lose the ability to change the shape of the lens. “A new lens developed by PowerVision, a company out of Belmont, California, aims to restore the eye’s ability to focus by changing its shape much like a natural one.” Source
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