Exercise tricycle for paraplegics

Area of Science:

• Rehabilitation Engineering
• Assistive Technology
• Biomechanics

Background:

• Paraplegics face significant mobility challenges, limiting independence.
• Standard tricycles present stability issues, particularly during turns.
• Existing assistive devices often require external assistance for operation.

Purpose of the Study:

• To develop an independently operable tricycle for individuals with paraplegia.
• To enhance stability and maneuverability for safe cycling.
• To integrate functional electrical stimulation and motor assistance for propulsion.

Main Methods:

• Hydraulic saddle adjustment for independent mounting/dismounting.
• Swiveling rear wheels with adjustable damping for enhanced stability.
• Integration of functional electrical stimulation (FES) for primary propulsion.
• Hub motor with throttle control for auxiliary power and gradient assistance.
• Continuous monitoring of pedal force, crank position, and wheel velocity for adaptive control.

Main Results:

• The tricycle allows paraplegics to mount and dismount independently.
• Adaptive stability control mitigates issues during cornering.
• Integrated FES and motor drive provide adaptable propulsion.
• Real-time sensor data enables precise control of assistive power.

Conclusions:

• The developed tricycle offers a viable solution for independent mobility in paraplegics.
• The adaptive stability and integrated propulsion systems significantly improve user experience and safety.
• This technology has the potential to enhance the quality of life and physical activity levels for individuals with lower limb impairments.