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Development of a Novel Task-oriented Rehabilitation Program using a Bimanual Exoskeleton Robotic Hand
Published on: May 20, 2020
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Design and experimental testing of a force-augmenting exoskeleton for the human hand.
Emily R Triolo1, Brett F BuSha2
1Department of Mechanical Engineering, University of Washington, Seattle, WA, 98195, USA.
Journal of Neuroengineering and Rehabilitation
|February 22, 2022
Summary
This study developed a powered hand exoskeleton to aid individuals with upper limb dysfunction. The device effectively augmented grip and pinch strength, improving object manipulation for daily activities.
Area of Science:
- Robotics
- Biomedical Engineering
- Assistive Technology
Background:
- Older Americans frequently experience upper limb dysfunction, impacting grip strength and object manipulation.
- Age-related illnesses and injuries contribute to long-term difficulties in hand function.
Purpose of the Study:
- To design and construct a five-fingered powered assistive exoskeleton for the human hand.
- To validate the exoskeleton's capability to enhance gripping and pinching forces.
- To assess the device's utility in assisting with Activities of Daily Living (ADLs).
Main Methods:
- The exoskeleton was designed using CAD software and 3D-printed.
- A microcontroller-based control system, linear actuators, and force sensors were employed.
- Ten healthy individuals participated in grasping, pinching, and functional tests to evaluate the device.
Main Results:
- Forearm muscle activity decreased by 67% for grasping and 67% for palmar pinching (p < 0.001).
- A 30% reduction in forearm muscle activity was observed for larger pinching efforts (p < 0.05).
- No significant benefit was found for minimal pinching or functional tests.
Conclusions:
- The powered hand exoskeleton enables independent digit control.
- Subjects could grasp, hold, and manipulate various objects while wearing the device.
- The exoskeleton shows potential for augmenting hand function in individuals with upper limb impairments.
