stair lifts, stairlifts
Stair lifts are motorized chairs that travel along a rail mounted to the treads of stairs. The rider should be able to get on and off the chair independently, or with assistance in the form of a walker or cane only. Typically, a stair lift is not a good solution for someone in a wheelchair.
A stair lift is also called a stairlift, a chair lift, a stairway lift, or by trade names such as “Stair Glide.”