Moving device for moving a human thumb, hand-exoskeleton and method of grasping

A moving device to move a human thumb between a resting position and a grasping position, the moving device comprising:

• a thumb bending section adapted to at least partially move the human thumb between a flexed position and an extended position, the thumb bending section comprising:
• a gear unit for transforming a rotation of a rotation element, which is rotatably mounted to a housing, into an essentially linear movement between a translation element and the housing;
• a first flexion spring mechanically connected to the translation element via a mechanical connection and a first proximal end of the first flexion spring adapted to be fixed relative to the human at a position between the metacarpophalangeal joint and a carpometacarpal joint;
• and
• a second flexion spring mechanically connected to the housing and a second distal end of the second flexion spring adapted to be fixed to the human thumb at a position in a distal distance to the metacarpophalangeal joint or at a distal phalanx and/or a proximal phalanx of the human thumb, the gear unit configured to realize a relative translational movement between the translation element and the housing to cause bending of at least one of the first or second flexion springs and at least a partial bending of the human thumb.