An assistive device having: a chassis； a handle assembly pivotally attached to said chassis, said chassis comprising a handle chassis portion for receiving a handle assembly and a platform chassis portion extending from said handle chassis portion with a standing platform； a locking mechanism operable to place and lock said handle assembly into a plurality of positions； a lever mechanism coupled to said locking mechanism to actuate said locking mechanism； and wherein said plurality of positions correspond to one of a loading position, an upright position and a storage position.
