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Category: Lower Extremity Amputation

Atlas

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---- PROTOTYPE --------- PURPOSE: To create a prototype of a bi-manual rehabilitation glove system to monitor the hand movements of individuals who have experienced stroke. Researchers at Northeastern University have created the Angle Tracking and Location At home System (ATLAS), a bi-manual rehabilitation glove system and tracking device that utilizes two gloves to monitor the hand movements of stroke survivors. The system's creators' eventually intend to release the ATLAS as an at-home testing system, allowing users to get more regular readings than industrial versions. The ATLAS is comprised of two standard black gloves. The gloves have bend sensors in each finger and internal measurement sensors on the back of the hand. The bend sensors are anchored on the back of the hand, located beneath a moveable flap. They're embedded in the glove, running down each finger. The hand orientation inertial sensor is comprised of an accelerometer, gyroscope and magnetometer located on a box strapped to the top of the glove. The instrumentation box feeds data into a computer via a serial connection. The bend sensors feed data into the instrumentation box with an Arduino Mega inside, while the inertial sensors first pass through their own Arduino microcontrollers before rejoining the data feed back to a computer. The lab has developed a handful of applications to monitor movement. There are issues with calibration, such as a requirement that the user must be able to hold the affected hand perfectly level for several seconds, that may be difficult for someone who has experienced stroke. To accommodate this issue, a pair of wrist rests were provided to offer a platform for placing the user’s arms. A finger bending demo involves geometric cubes which grow and shrink as you squeeze your fist tighter. Researchers are trying to create a comparably low-cost device that can be marketed for home use and priced much less than hospital units that aren’t natively bi-manual. Additionally, the ATLAS is designed to be more intuitive and safer for home use due to the lack of magnetic tracking that can have adverse effects on other devices, such as interfering with pacemakers. The packaging together of both right and left units also utilizes tracking that can be helpful for two-handed activities like putting on a jacket or opening a jar, which are activities for which stroke survivors often use other parts of the body to compensate for lost movement. Compensation can lead to other injuries as the stress normally put on one muscle is shifted to another less ideal for that range of motion. AUTHOR: Brian Heater. TITLE: ATLAS bimanual-rehabilitation glove system hands-on. WEBSITE: Engadget. REF: http://www.engadget.com/2012/06/12/atlas-bimanual-rehabilitation-glove-s....

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09/02/2012
Atlas
 
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