R1. Restoration of Arm and Hand Function using Integrated Robotic and Orthotic Systems
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Abstract
The goal of this project is to develop an orthotic system to facilitate reaching and grasping in individuals with hemiplegia subsequent to stroke. It will consist of independent arm, wrist, and hand orthoses. The arm orthosis will provide compensation for gravitational loading of the arm, thereby reducing the force necessary to move the arm. The hand orthosis will bias the hand toward an extended posture to compensate for excessive active flexor tone. A fixed wrist orthosis will maintain a constant wrist angle. The system will be comprised of entirely passive components, so that it can readily be used in home, community, or work environments. Efficacy testing will be performed first in a laboratory setting, where changes in reaching and grasping performance resulting from use of the orthotic system can be rigorously quantified. If warranted, further studies will then be conducted to assess the effects on function and daily living in clinical and community settings.
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Example of the current anti-gravity orthosis at the lab. The orthosis is attached to a standard office chair. The forearm is secured to a trough connected to the end link of the orthosis.
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Example of the proposed glove modification to facilitate donning and doffing of the glove orthosis. A zipper will be sewn into the palmar surface of the glove to permit insertion of the digits into the glove while the palm remains unexposed.
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