team photo

Figure 1
project photo

Figure 2
project photo

Team 10

Team Members

Faculty Advisor

Alexander Stiefel
Collin Johnston
Zachary Flanagan

Sabato Santaniello

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Arm Exoskeleton for Restoring Wrist and Elbow Control for Patients with Stroke

Every year, more than 795,000 people have a stroke, which may result in
paralysis or weakness in about 80% or patients. The purpose of this project is to create
a wearable exoskeleton for the upper extremities of an individual who is suffering
paralysis or loss of movement due to a stroke. The team has created a complete
orthotic casket for the actuation of the forearm, wrist, and elbow through the process of
additive manufacturing. This was accomplished by 3-D printing, and mechanically
testing a wearable orthotic, including motors, that can flex the forearm, wrist, and elbow
of a patient recovering from a stroke. The device includes an exoskeleton combined
with actuators to control the flexion and extension of the wrist and elbow, along with the
supination and pronation of the arm. These combined movements provide for 4 total
degrees of freedom. The design also includes an optimized wearable holder to carry the
batteries and microcontroller. The device is designed to allow the adjustment of the
torques with minimal intervention by having interchangeable gears with varying gear
ratios. The benefit of this is it allows for the customization of the orthotic for different
types of patients with different needs, and it is amenable to combine and integrate
adaptive control strategies in the future.