HandCARE: a cable-actuated rehabilitation system to train hand function after stroke

Area of Science:

• Robotics
• Rehabilitation Engineering
• Biomechanics

Background:

• Hand and finger dysfunction impacts quality of life.
• Existing rehabilitation methods may lack precision and adaptability.
• Objective measurement and controlled assistance are crucial for effective hand therapy.

Purpose of the Study:

• To develop and characterize a novel robotic interface for hand and finger rehabilitation.
• To design a system based on biomechanical principles for effective training.
• To create a versatile and user-friendly rehabilitation device.

Main Methods:

• Biomechanical measurements were conducted to inform device design.
• A Cable-Actuated REhabilitation (HandCARE) system was developed.
• The system incorporates a differential sensing system and a clutch mechanism for independent finger control.

Main Results:

• The HandCARE system allows for force-controlled, predominantly linear finger displacement.
• The device accommodates various hand shapes and finger sizes.
• A single actuator can independently control all five fingers via a clutch system.

Conclusions:

• HandCARE offers a safe, transportable, and versatile solution for hand and finger rehabilitation.
• The system provides multiple training possibilities for patients.
• The developed robotic interface meets the requirements for effective finger rehabilitation.