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A passively safe cable driven upper limb rehabilitation exoskeleton


BACKGROUND: When using upper limb exoskeletons that assist the movement of physically weak people, safety should be the most important index.

OBJECTIVE: In this paper, a passively safe, cable-driven upper limb exoskeleton with parallel actuated joints, which perfectly mimics human motions, is proposed.

METHODS: Compared with the existing upper limb exoskeletons which are mostly designed only considering the realization of functional properties, and having poor wearabity, a passively safe prototype for motion assistance based on human anatomy structure has been developed in our design. This design is based on the prior exoskeleton structure with the adoption of a gravity balanced device.

RESULTS AND CONCLUSION: The gravity balanced mechanism was confirmed in theory and simulation, showing it has a positive effect on balance.