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Power-Assisted Exoskeleton


  1. Miguel Colon
  2. Yara Hamid
  3. Jonathon Lopez
  4. Trevor Reynolds (ME)
  5. Leah Scully

Advisors: B. BuSha, S. Kim, M. Paliwal

In the United States over 1 million Americans suffer from muscular disorders such as Multiple Sclerosis, Carpal Tunnel Syndrome and Parkinson’s disease. Muscular disorders can affect the skeletal muscles that control hand movements by causing them to lose strength and dexterity resulting in a loss of the hand’s ability to perform everyday functional movements such as pinching and grasping. A power assistive exoskeleton is designed to amplify a user’s residual strength and restore functional movements. This device incorporates a digit mechanism comprising of a thumb, index, and grouped third MRS (middle, ring, small) digit. Each digit will provide flexion/extension through the coupling of a solenoid pneumatic actuator and double action pneumatic cylinder working in compression. The double action pneumatic cylinders will be connected to a polymer-braided cable that will produce a force on each digit allowing it to actuate. The solenoid pneumatic actuator will be powered through a control system that receives sensor feedback from force sensing resistors placed on each digit and converts it to an electrical signal. Preliminary testing will include the utilization of forearm EMG data obtained when the user performs daily tasks such as picking up a pencil, a 5 lb bag, and a water bottle with the exoskeleton. These results should represent a reduction in pinching and grasping effort with respect to normal force production in each subject tested, and thereby successfully amplifying these movements and restoring hand functionality.

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Armstrong Hall, Room 165
The College of New Jersey
P.O. Box 7718
2000 Pennington Rd.
Ewing, NJ 08628


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