Introducing V-Soft Pro: A Modular Platform for a Transhumeral Prosthesis with Controllable Stiffness

Area of Science:

• Biomedical Engineering
• Robotics
• Prosthetics

Background:

• Current upper limb prostheses offer limited functionality, failing to replicate the adaptive compliance of biological limbs.
• Human limbs utilize intrinsic compliance and adjustable joint stiffness for versatile task performance, impact absorption, and efficient energy transfer.

Purpose of the Study:

• To develop a transhumeral prosthesis that replicates the controllable compliance of biological joints using Variable Stiffness Actuators (VSAs).
• To enhance user independence and interaction capabilities in prosthetic devices.

Main Methods:

• Development of a transhumeral prosthesis incorporating Variable Stiffness Actuators (VSAs).
• Implementation of a modular design for customizable fit and integration of biological control signals.
• Inclusion of integrated elastic elements for passive support and adaptive movement.

Main Results:

• The prosthesis successfully replicates controllable compliance, inspired by biological joint adaptability.
• The modular design allows for customization and accommodates diverse user biological cues.
• Integrated elastic elements contribute to natural movement and safe environmental interaction.

Conclusions:

• The developed prosthesis with VSAs offers a significant advancement in replicating natural arm movement and adaptability.
• This technology holds potential for improving the functionality and user experience of upper limb prosthetics.
• Further applications in advanced prosthetic development are anticipated.