A movement assistive device for the elbow joint

A movement assistive device for the elbow joint, comprising: an actuation unit provided with a motor; at least two arm garments removably attachable to an arm of the wearer; at least one transmission cable; wherein the actuation unit comprises: at least one elastic element coupled with the motor and configured to generate, under tension, an elastic force, the at least one transmission cable connecting the at least one elastic element to the at least two arm garments to apply the assistive torque to the wearer arm; at least one cam-spool mechanism configured to elongate the at least one elastic element as a function of human elbow torque/angle profile, wherein each cam-spool mechanism comprises: a cam curve with rotatable camshaft to move a respective transmission cable around the cam curve; a roller and a spool provided with a slot, the spool being coupled with the camshaft though a roller that can slide inside the slot; wherein the rotation axis of the camshaft is decoupled and offset from the rotation axis of the spool.