This invention relates to aid devices for assisting people inhibited in their movement of especially the hands and / or wrists such as people who are physically impaired due to arthritis injury or other physiological problems giving reduced strength. This is solved by introducing an aid tool ( 1 ) comprising at least two grippers ( 2 ) and means to attach each gripper to a finger of a person where the grippers are adapted to follow the individual finger in a movement in the direction of closing and loosen of a grip and where an activation of the aid tool includes locking the grippers unidirectionally in the present position. The invention further introduces mounting means ( 7 ) for attaching the aid tool to a body part and where the mounting means comprises coupling means ( 8 ) for detaching and attaching this and other tools according to the need.
