A wheelchair operation assistance control for a wearable robot using the user's residual function.

Area of Science:

• Rehabilitation Engineering
• Neuroscience
• Biomechanics

Background:

• Cervical Cord Injury (CCI) at the C5 level frequently causes paralysis of the triceps brachii, preventing elbow extension.
• This deficit impairs the ability of individuals with C5-level CCI to operate wheelchairs, especially on inclines or carpets.
• Limited upper limb function necessitates assistive technologies to restore mobility and independence.

Purpose of the Study:

• To estimate wheelchair velocity during elbow flexion based on elbow angular velocity in individuals with C5-level CCI.
• To lay the groundwork for developing a wearable assistive robot that aids in elbow extension for wheelchair operation.
• To enhance the mobility and functional independence of individuals with cervical cord injuries.

Main Methods:

• Utilized kinematic data to estimate wheelchair velocity during elbow flexion.
• Focused on the relationship between elbow angular velocity and wheelchair movement.
• Simulated assistive robot control based on estimated movement parameters.

Main Results:

• Successfully estimated wheelchair velocity during elbow flexion using elbow angular velocity.
• Demonstrated a correlation between arm movement and wheelchair propulsion.
• Provided data for the development of an assistive elbow extension system.

Conclusions:

• The estimation of wheelchair velocity from elbow flexion is feasible.
• This research supports the development of wearable robots to assist with elbow extension in C5-level CCI patients.
• Assistive robotic technology holds promise for improving wheelchair mobility for individuals with SCI.