Myoelectrically Controlled Power-Assist Upper Extremity Exoskeleton
Abstract
Upper extremity peripheral nerve injuries accounted for 6% of all recorded battlefield injuries during Operation Iraqi Freedom. Upper extremity peripheral nerve injuries are the silent, unrecognized injuries that result in loss of function and sensation in specific patterns depending on the nerves that are injured. In the most severe form, a traumatic brachial plexus avulsion injury, all the nerves to the upper extremity are severed, resulting in an upper extremity lacking motor function and sensation from shoulder to hand. This injury is akin to a functional amputation; the extremity is present, but completely nonfunctional. Restoration of elbow flexion is the primary goal following brachial plexus injury since it is a critical motion for daily living. Multiple surgical options exist to achieve this goal. There is a delay of 6-12 months after surgery before muscle reinnervation occurs and muscle strength takes 2 years to mature. During this period a powered exoskeleton would be beneficial for assistance with functional activities. The objective of this program is to design, develop, and validate a powered exoskeleton system to assist elbow flexion in patients with traumatic peripheral nerve injuries who have inadequate motor function. Over the second year of this project, we have integrated the mechanical and electrical designs along with the myoelectric control algorithm into an alpha prototype of the powered exoskeleton.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2022
- Accession Number
- AD1192026
Entities
People
- Kenton R. Kaufman
Organizations
- Mayo Clinic